Merge "Add IWLAN ePDG IP preference in CarrierConfigManager"

2 files changed, 46 insertions, 1 deletions

diff --git a/core/api/current.txt b/core/api/current.txt
index e3ec90ed4e55..c9b5af52db84 100644
--- a/core/api/current.txt
+++ b/core/api/current.txt
@@ -41837,6 +41837,9 @@ package android.telephony {
     field public static final int AUTHENTICATION_METHOD_CERT = 1; // 0x1
     field public static final int AUTHENTICATION_METHOD_EAP_ONLY = 0; // 0x0
     field public static final int EPDG_ADDRESS_CELLULAR_LOC = 3; // 0x3
+    field public static final int EPDG_ADDRESS_IPV4_ONLY = 2; // 0x2
+    field public static final int EPDG_ADDRESS_IPV4_PREFERRED = 0; // 0x0
+    field public static final int EPDG_ADDRESS_IPV6_PREFERRED = 1; // 0x1
     field public static final int EPDG_ADDRESS_PCO = 2; // 0x2
     field public static final int EPDG_ADDRESS_PLMN = 1; // 0x1
     field public static final int EPDG_ADDRESS_STATIC = 0; // 0x0
@@ -41851,6 +41854,7 @@ package android.telephony {
     field public static final String KEY_CHILD_SESSION_AES_CTR_KEY_SIZE_INT_ARRAY = "iwlan.child_session_aes_ctr_key_size_int_array";
     field public static final String KEY_DIFFIE_HELLMAN_GROUPS_INT_ARRAY = "iwlan.diffie_hellman_groups_int_array";
     field public static final String KEY_DPD_TIMER_SEC_INT = "iwlan.dpd_timer_sec_int";
+    field public static final String KEY_EPDG_ADDRESS_IP_TYPE_PREFERENCE_INT = "iwlan.epdg_address_ip_type_preference_int";
     field public static final String KEY_EPDG_ADDRESS_PRIORITY_INT_ARRAY = "iwlan.epdg_address_priority_int_array";
     field public static final String KEY_EPDG_AUTHENTICATION_METHOD_INT = "iwlan.epdg_authentication_method_int";
     field public static final String KEY_EPDG_PCO_ID_IPV4_INT = "iwlan.epdg_pco_id_ipv4_int";
diff --git a/telephony/java/android/telephony/CarrierConfigManager.java b/telephony/java/android/telephony/CarrierConfigManager.java
index 12d1bc3dc83a..d6142f7d1d23 100644
--- a/telephony/java/android/telephony/CarrierConfigManager.java
+++ b/telephony/java/android/telephony/CarrierConfigManager.java
@@ -8008,6 +8008,14 @@ public class CarrierConfigManager {
         public static final String KEY_SUPPORTS_EAP_AKA_FAST_REAUTH_BOOL =
                 KEY_PREFIX + "supports_eap_aka_fast_reauth_bool";
 
+        /**
+         * Type of IP preference used to prioritize ePDG servers. Possible values are
+         * {@link #EPDG_ADDRESS_IPV4_PREFERRED}, {@link #EPDG_ADDRESS_IPV6_PREFERRED},
+         * {@link #EPDG_ADDRESS_IPV4_ONLY}
+         */
+        public static final String KEY_EPDG_ADDRESS_IP_TYPE_PREFERENCE_INT =
+                KEY_PREFIX + "epdg_address_ip_type_preference_int";
+
         /** @hide */
         @IntDef({AUTHENTICATION_METHOD_EAP_ONLY, AUTHENTICATION_METHOD_CERT})
         public @interface AuthenticationMethodType {}
@@ -8072,6 +8080,39 @@ public class CarrierConfigManager {
          */
         public static final int ID_TYPE_KEY_ID = 11;
 
+        /** @hide */
+        @IntDef({
+                EPDG_ADDRESS_IPV4_PREFERRED,
+                EPDG_ADDRESS_IPV6_PREFERRED,
+                EPDG_ADDRESS_IPV4_ONLY,
+                EPDG_ADDRESS_IPV6_ONLY,
+                EPDG_ADDRESS_SYSTEM_PREFERRED
+        })
+        public @interface EpdgAddressIpPreference {}
+
+        /** Prioritize IPv4 ePDG addresses. */
+        public static final int EPDG_ADDRESS_IPV4_PREFERRED = 0;
+
+        /** Prioritize IPv6 ePDG addresses */
+        public static final int EPDG_ADDRESS_IPV6_PREFERRED = 1;
+
+        /** Use IPv4 ePDG addresses only. */
+        public static final int EPDG_ADDRESS_IPV4_ONLY = 2;
+
+        /** Use IPv6 ePDG addresses only.
+         * @hide
+         */
+        public static final int EPDG_ADDRESS_IPV6_ONLY = 3;
+
+        /** Follow the priority from DNS resolution results, which are sorted by using RFC6724
+         * algorithm.
+         *
+         * @see <a href="https://tools.ietf.org/html/rfc6724#section-6">RFC 6724, Default Address
+         *     Selection for Internet Protocol Version 6 (IPv6)</a>
+         * @hide
+         */
+        public static final int EPDG_ADDRESS_SYSTEM_PREFERRED = 4;
+
         private Iwlan() {}
 
         private static PersistableBundle getDefaults() {
@@ -8155,7 +8196,7 @@ public class CarrierConfigManager {
             defaults.putInt(KEY_EPDG_PCO_ID_IPV6_INT, 0);
             defaults.putInt(KEY_EPDG_PCO_ID_IPV4_INT, 0);
             defaults.putBoolean(KEY_SUPPORTS_EAP_AKA_FAST_REAUTH_BOOL, false);
-
+            defaults.putInt(KEY_EPDG_ADDRESS_IP_TYPE_PREFERENCE_INT, EPDG_ADDRESS_IPV4_PREFERRED);
             return defaults;
         }
     }