diff --git a/Tethering/jni/com_android_networkstack_tethering_BpfCoordinator.cpp b/Tethering/jni/com_android_networkstack_tethering_BpfCoordinator.cpp
index 27357f8..c8c86bc 100644
--- a/Tethering/jni/com_android_networkstack_tethering_BpfCoordinator.cpp
+++ b/Tethering/jni/com_android_networkstack_tethering_BpfCoordinator.cpp
@@ -17,7 +17,7 @@
 #include <jni.h>
 #include <nativehelper/JNIHelp.h>
 
-#include "bpf_tethering.h"
+#include "offload.h"
 
 namespace android {
 
diff --git a/Tethering/src/com/android/networkstack/tethering/BpfCoordinator.java b/Tethering/src/com/android/networkstack/tethering/BpfCoordinator.java
index 6a5089d..51c7c9c 100644
--- a/Tethering/src/com/android/networkstack/tethering/BpfCoordinator.java
+++ b/Tethering/src/com/android/networkstack/tethering/BpfCoordinator.java
@@ -126,7 +126,7 @@
     private static final String DUMPSYS_RAWMAP_ARG_STATS = "--stats";
     private static final String DUMPSYS_RAWMAP_ARG_UPSTREAM4 = "--upstream4";
 
-    /** The names of all the BPF counters defined in bpf_tethering.h. */
+    /** The names of all the BPF counters defined in offload.h. */
     public static final String[] sBpfCounterNames = getBpfCounterNames();
 
     private static String makeMapPath(String which) {
diff --git a/Tethering/tests/unit/src/com/android/networkstack/tethering/BpfCoordinatorTest.java b/Tethering/tests/unit/src/com/android/networkstack/tethering/BpfCoordinatorTest.java
index 225fed7..53984a8 100644
--- a/Tethering/tests/unit/src/com/android/networkstack/tethering/BpfCoordinatorTest.java
+++ b/Tethering/tests/unit/src/com/android/networkstack/tethering/BpfCoordinatorTest.java
@@ -2180,7 +2180,7 @@
                 new TetherDevValue(UPSTREAM_IFINDEX));
 
         // dumpCounters
-        // The error code is defined in packages/modules/Connectivity/bpf_progs/bpf_tethering.h.
+        // The error code is defined in packages/modules/Connectivity/bpf_progs/offload.h.
         mBpfErrorMap.insertEntry(
                 new S32(0 /* INVALID_IPV4_VERSION */),
                 new S32(1000 /* count */));
diff --git a/bpf_progs/bpf_shared.h b/bpf_progs/bpf_shared.h
index 7b1106a..cc88680 100644
--- a/bpf_progs/bpf_shared.h
+++ b/bpf_progs/bpf_shared.h
@@ -196,32 +196,4 @@
 // Entry in the configuration map that stores which stats map is currently in use.
 #define CURRENT_STATS_MAP_CONFIGURATION_KEY 1
 
-typedef struct {
-    uint32_t iif;            // The input interface index
-    struct in6_addr pfx96;   // The source /96 nat64 prefix, bottom 32 bits must be 0
-    struct in6_addr local6;  // The full 128-bits of the destination IPv6 address
-} ClatIngress6Key;
-STRUCT_SIZE(ClatIngress6Key, 4 + 2 * 16);  // 36
-
-typedef struct {
-    uint32_t oif;           // The output interface to redirect to (0 means don't redirect)
-    struct in_addr local4;  // The destination IPv4 address
-} ClatIngress6Value;
-STRUCT_SIZE(ClatIngress6Value, 4 + 4);  // 8
-
-typedef struct {
-    uint32_t iif;           // The input interface index
-    struct in_addr local4;  // The source IPv4 address
-} ClatEgress4Key;
-STRUCT_SIZE(ClatEgress4Key, 4 + 4);  // 8
-
-typedef struct {
-    uint32_t oif;            // The output interface to redirect to
-    struct in6_addr local6;  // The full 128-bits of the source IPv6 address
-    struct in6_addr pfx96;   // The destination /96 nat64 prefix, bottom 32 bits must be 0
-    bool oifIsEthernet;      // Whether the output interface requires ethernet header
-    uint8_t pad[3];
-} ClatEgress4Value;
-STRUCT_SIZE(ClatEgress4Value, 4 + 2 * 16 + 1 + 3);  // 40
-
 #undef STRUCT_SIZE
diff --git a/bpf_progs/clatd.c b/bpf_progs/clatd.c
index fc10d09..14cddf6 100644
--- a/bpf_progs/clatd.c
+++ b/bpf_progs/clatd.c
@@ -35,7 +35,7 @@
 
 #include "bpf_helpers.h"
 #include "bpf_net_helpers.h"
-#include "bpf_shared.h"
+#include "clatd.h"
 #include "clat_mark.h"
 
 // IP flags. (from kernel's include/net/ip.h)
diff --git a/bpf_progs/clatd.h b/bpf_progs/clatd.h
new file mode 100644
index 0000000..b5f1cdc
--- /dev/null
+++ b/bpf_progs/clatd.h
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <linux/in.h>
+#include <linux/in6.h>
+
+#include <stdbool.h>
+#include <stdint.h>
+
+// This header file is shared by eBPF kernel programs (C) and netd (C++) and
+// some of the maps are also accessed directly from Java mainline module code.
+//
+// Hence: explicitly pad all relevant structures and assert that their size
+// is the sum of the sizes of their fields.
+#define STRUCT_SIZE(name, size) _Static_assert(sizeof(name) == (size), "Incorrect struct size.")
+
+typedef struct {
+    uint32_t iif;            // The input interface index
+    struct in6_addr pfx96;   // The source /96 nat64 prefix, bottom 32 bits must be 0
+    struct in6_addr local6;  // The full 128-bits of the destination IPv6 address
+} ClatIngress6Key;
+STRUCT_SIZE(ClatIngress6Key, 4 + 2 * 16);  // 36
+
+typedef struct {
+    uint32_t oif;           // The output interface to redirect to (0 means don't redirect)
+    struct in_addr local4;  // The destination IPv4 address
+} ClatIngress6Value;
+STRUCT_SIZE(ClatIngress6Value, 4 + 4);  // 8
+
+typedef struct {
+    uint32_t iif;           // The input interface index
+    struct in_addr local4;  // The source IPv4 address
+} ClatEgress4Key;
+STRUCT_SIZE(ClatEgress4Key, 4 + 4);  // 8
+
+typedef struct {
+    uint32_t oif;            // The output interface to redirect to
+    struct in6_addr local6;  // The full 128-bits of the source IPv6 address
+    struct in6_addr pfx96;   // The destination /96 nat64 prefix, bottom 32 bits must be 0
+    bool oifIsEthernet;      // Whether the output interface requires ethernet header
+    uint8_t pad[3];
+} ClatEgress4Value;
+STRUCT_SIZE(ClatEgress4Value, 4 + 2 * 16 + 1 + 3);  // 40
+
+#undef STRUCT_SIZE
diff --git a/bpf_progs/offload.c b/bpf_progs/offload.c
index e211d68..a8612df 100644
--- a/bpf_progs/offload.c
+++ b/bpf_progs/offload.c
@@ -48,7 +48,7 @@
 
 #include "bpf_helpers.h"
 #include "bpf_net_helpers.h"
-#include "bpf_tethering.h"
+#include "offload.h"
 
 // From kernel:include/net/ip.h
 #define IP_DF 0x4000  // Flag: "Don't Fragment"
diff --git a/bpf_progs/bpf_tethering.h b/bpf_progs/offload.h
similarity index 100%
rename from bpf_progs/bpf_tethering.h
rename to bpf_progs/offload.h
diff --git a/bpf_progs/test.c b/bpf_progs/test.c
index c11c358..d1f780f 100644
--- a/bpf_progs/test.c
+++ b/bpf_progs/test.c
@@ -46,7 +46,7 @@
 
 #include "bpf_helpers.h"
 #include "bpf_net_helpers.h"
-#include "bpf_tethering.h"
+#include "offload.h"
 
 // Used only by TetheringPrivilegedTests, not by production code.
 DEFINE_BPF_MAP_GRW(tether_downstream6_map, HASH, TetherDownstream6Key, Tether6Value, 16,