Move libipchecksum to frameworks/libs/net.
This code is used by the DNS resolver mainline module, so it
should be in a directory that is automerged to sc-mainline-prod,
not in /system/core.
Test: m
Change-Id: I2d953afa3d2766ca2b4529e9e49151c098b466aa
diff --git a/staticlibs/native/ip_checksum/checksum.h b/staticlibs/native/ip_checksum/checksum.h
new file mode 100644
index 0000000..868217c
--- /dev/null
+++ b/staticlibs/native/ip_checksum/checksum.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2011 Daniel Drown
+ *
+ * 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.
+ *
+ * checksum.h - checksum functions
+ */
+#ifndef __CHECKSUM_H__
+#define __CHECKSUM_H__
+
+#include <netinet/ip.h>
+#include <netinet/ip6.h>
+#include <stdint.h>
+
+uint32_t ip_checksum_add(uint32_t current, const void* data, int len);
+uint16_t ip_checksum_finish(uint32_t temp_sum);
+uint16_t ip_checksum(const void* data, int len);
+
+uint32_t ipv6_pseudo_header_checksum(const struct ip6_hdr* ip6, uint32_t len, uint8_t protocol);
+uint32_t ipv4_pseudo_header_checksum(const struct iphdr* ip, uint16_t len);
+
+uint16_t ip_checksum_adjust(uint16_t checksum, uint32_t old_hdr_sum, uint32_t new_hdr_sum);
+
+#endif /* __CHECKSUM_H__ */