bearer-qmi: current settings are mandatory when using 'static' addressing

If for any reason getting current settings fails and we require static
IP addressing (when using raw-ip), then that must be a hard error,
otherwise we'll end up with the modem reported as connected but
without any IP settings to use:

 <info>  error: couldn't get current settings: QMI protocol error (15): 'OutOfCall'
 <info>  Modem /org/freedesktop/ModemManager1/Modem/0: state changed (registered -> connected)
 <info>  Simple connect state (8/8): All done
 <warn>  Reloading stats failed: Couldn't get packet statistics: QMI protocol error (15): 'OutOfCall'

  # mmcli -b 0
  Bearer '/org/freedesktop/ModemManager1/Bearer/0'
    -------------------------
    Status             |   connected: 'yes'
                       |   suspended: 'no'
                       |   interface: 'wwan1'
                       |  IP timeout: '20'
    -------------------------
    Properties         |         apn: 'm2minternet'
                       |     roaming: 'allowed'
                       |     IP type: 'none'
                       |        user: 'none'
                       |    password: 'none'
                       |      number: 'none'
                       | Rm protocol: 'unknown'
    -------------------------
    IPv4 configuration |   method: 'unknown'
    -------------------------
    IPv6 configuration |   method: 'unknown'
    -------------------------
    Stats              |          Duration: '0'
                       |    Bytes received: 'N/A'
                       | Bytes transmitted: 'N/A'

  # mmcli -m 0

  /org/freedesktop/ModemManager1/Modem/0 (device id '48f6c35f3d0376aa261a91c0cf7e6340d5a91601')
    ...
    Status   |           lock: 'sim-pin2'
             | unlock retries: 'sim-pin (3), sim-pin2 (3), sim-puk (10), sim-puk2 (10)'
             |          state: 'connected'
             |    power state: 'on'
             |    access tech: 'lte'
             | signal quality: '96' (recent)

(cherry picked from commit 03e6375a95ace2c1c1ecd8b621fc90b7e86ebe8b)

1 files changed, 24 insertions, 5 deletions

diff --git a/src/mm-bearer-qmi.c b/src/mm-bearer-qmi.c
index 3b005979..8565efb0 100644
--- a/src/mm-bearer-qmi.c
+++ b/src/mm-bearer-qmi.c
@@ -860,12 +860,31 @@ get_current_settings_ready (QmiClientWds *client,
     g_assert (ctx->running_ipv4 || ctx->running_ipv6);
 
     output = qmi_client_wds_get_current_settings_finish (client, res, &error);
-    if (!output ||
-        !qmi_message_wds_get_current_settings_output_get_result (output, &error)) {
-        /* Never treat this as a hard connection error; not all devices support
-         * "WDS Get Current Settings" */
-        mm_info ("error: couldn't get current settings: %s", error->message);
+    if (!output || !qmi_message_wds_get_current_settings_output_get_result (output, &error)) {
+        MMBearerIpConfig *config;
+
+        /* When we're using static IP address, the current settings are mandatory */
+        if (ctx->ip_method == MM_BEARER_IP_METHOD_STATIC) {
+            mm_warn ("Failed to retrieve mandatory IP settings: %s", error->message);
+            if (output)
+                qmi_message_wds_get_current_settings_output_unref (output);
+            complete_connect (task, NULL, error);
+            return;
+        }
+
+        /* Otherwise, just go on as we're asking for DHCP */
+        mm_dbg ("Couldn't get current settings: %s", error->message);
         g_error_free (error);
+
+        config = mm_bearer_ip_config_new ();
+        mm_bearer_ip_config_set_method (config, ctx->ip_method);
+
+        if (ctx->running_ipv4)
+            ctx->ipv4_config = config;
+        else if (ctx->running_ipv6)
+            ctx->ipv6_config = config;
+        else
+            g_assert_not_reached ();
     } else {
         QmiWdsIpFamily ip_family = QMI_WDS_IP_FAMILY_UNSPECIFIED;
         guint32 mtu = 0;