helpers-mbim: new method to convert IP type settings to/from MM

src/mm-bearer-mbim.c

@@ -973,30 +973,10 @@ connect_context_step (GTask *task)
             g_free (str);
         }
 
-        if (ip_family == MM_BEARER_IP_FAMILY_IPV4)
+        ctx->ip_type = mm_bearer_ip_family_to_mbim_context_ip_type (ip_family, &error);
-            ctx->ip_type = MBIM_CONTEXT_IP_TYPE_IPV4;
+        if (error) {
-        else if (ip_family == MM_BEARER_IP_FAMILY_IPV6)
+            g_task_return_error (task, error);
-            ctx->ip_type = MBIM_CONTEXT_IP_TYPE_IPV6;
-        else if (ip_family == MM_BEARER_IP_FAMILY_IPV4V6)
-            ctx->ip_type = MBIM_CONTEXT_IP_TYPE_IPV4V6;
-        else if (ip_family == (MM_BEARER_IP_FAMILY_IPV4 | MM_BEARER_IP_FAMILY_IPV6))
-            ctx->ip_type = MBIM_CONTEXT_IP_TYPE_IPV4_AND_IPV6;
-        else if (ip_family == MM_BEARER_IP_FAMILY_NONE ||
-                 ip_family == MM_BEARER_IP_FAMILY_ANY)
-            /* A valid default IP family should have been specified */
-            g_assert_not_reached ();
-        else  {
-            gchar * str;
-
-            str = mm_bearer_ip_family_build_string_from_mask (ip_family);
-            g_task_return_new_error (
-                task,
-                MM_CORE_ERROR,
-                MM_CORE_ERROR_UNSUPPORTED,
-                "Unsupported IP type configuration: '%s'",
-                str);
             g_object_unref (task);
-            g_free (str);
             return;
         }
 

src/mm-modem-helpers-mbim.c

@@ -357,7 +357,7 @@ mm_bearer_allowed_auth_to_mbim_auth_protocol (MMBearerAllowedAuth   bearer_auth,
     g_set_error (error,
                  MM_CORE_ERROR,
                  MM_CORE_ERROR_UNSUPPORTED,
-                 "No match for the requested authentication methods (%s)",
+                 "Unsupported authentication methods (%s)",
                  str);
     g_free (str);
     return MBIM_AUTH_PROTOCOL_NONE;
@@ -365,6 +365,60 @@ mm_bearer_allowed_auth_to_mbim_auth_protocol (MMBearerAllowedAuth   bearer_auth,
 
 /*****************************************************************************/
 
+MMBearerIpFamily
+mm_bearer_ip_family_from_mbim_context_ip_type (MbimContextIpType ip_type)
+{
+    switch (ip_type) {
+    case MBIM_CONTEXT_IP_TYPE_IPV4:
+        return MM_BEARER_IP_FAMILY_IPV4;
+    case MBIM_CONTEXT_IP_TYPE_IPV6:
+        return MM_BEARER_IP_FAMILY_IPV6;
+    case MBIM_CONTEXT_IP_TYPE_IPV4V6:
+        return MM_BEARER_IP_FAMILY_IPV4V6;
+    case MBIM_CONTEXT_IP_TYPE_IPV4_AND_IPV6:
+        return MM_BEARER_IP_FAMILY_IPV4 | MM_BEARER_IP_FAMILY_IPV6;
+    default:
+        return MM_BEARER_IP_FAMILY_NONE;
+    }
+}
+
+MbimContextIpType
+mm_bearer_ip_family_to_mbim_context_ip_type (MMBearerIpFamily   ip_family,
+                                             GError           **error)
+{
+    gchar *str;
+
+    /* NOTE: the input is a BITMASK, so we try to find a "best match" */
+
+    switch ((guint)ip_family) {
+    case MM_BEARER_IP_FAMILY_IPV4:
+        return MBIM_CONTEXT_IP_TYPE_IPV4;
+    case MM_BEARER_IP_FAMILY_IPV6:
+        return MBIM_CONTEXT_IP_TYPE_IPV6;
+    case  MM_BEARER_IP_FAMILY_IPV4V6:
+        return MBIM_CONTEXT_IP_TYPE_IPV4V6;
+    case (MM_BEARER_IP_FAMILY_IPV4 | MM_BEARER_IP_FAMILY_IPV6):
+        return MBIM_CONTEXT_IP_TYPE_IPV4_AND_IPV6;
+    case MM_BEARER_IP_FAMILY_NONE:
+    case MM_BEARER_IP_FAMILY_ANY:
+        /* A valid default IP family should have been specified */
+        g_assert_not_reached ();
+    default:
+        break;
+    }
+
+    str = mm_bearer_ip_family_build_string_from_mask (ip_family);
+    g_set_error (error,
+                 MM_CORE_ERROR,
+                 MM_CORE_ERROR_UNSUPPORTED,
+                 "Unsupported IP type configuration: '%s'",
+                 str);
+    g_free (str);
+    return MBIM_CONTEXT_IP_TYPE_DEFAULT;
+}
+
+/*****************************************************************************/
+
 MMSmsState
 mm_sms_state_from_mbim_message_status (MbimSmsStatus status)
 {

src/mm-modem-helpers-mbim.h

@@ -42,6 +42,9 @@ GError *mm_mobile_equipment_error_from_mbim_nw_error (MbimNwError nw_error);
 MMBearerAllowedAuth mm_bearer_allowed_auth_from_mbim_auth_protocol (MbimAuthProtocol      auth_protocol);
 MbimAuthProtocol    mm_bearer_allowed_auth_to_mbim_auth_protocol   (MMBearerAllowedAuth   bearer_auth,
                                                                     GError              **error);
+MMBearerIpFamily    mm_bearer_ip_family_from_mbim_context_ip_type  (MbimContextIpType     ip_type);
+MbimContextIpType   mm_bearer_ip_family_to_mbim_context_ip_type    (MMBearerIpFamily      ip_family,
+                                                                    GError              **error);
 
 /*****************************************************************************/
 /* MBIM/SMS to MM translations */