hmap: Add extra build-time iteration checks for types derived from hmap.

[cascardo/ovs.git] / lib / csum.h

diff --git a/lib/csum.h b/lib/csum.h
index e5f35e9..fc52086 100644 (file)
--- a/lib/csum.h
+++ b/lib/csum.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2008, 2011 Nicira Networks.
+ * Copyright (c) 2008, 2011, 2015 Nicira, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -22,11 +22,36 @@
 #include "openvswitch/types.h"
 
 ovs_be16 csum(const void *, size_t);
-uint32_t csum_add16(uint32_t partial, ovs_be16);
-uint32_t csum_add32(uint32_t partial, ovs_be32);
 uint32_t csum_continue(uint32_t partial, const void *, size_t);
 ovs_be16 csum_finish(uint32_t partial);
 ovs_be16 recalc_csum16(ovs_be16 old_csum, ovs_be16 old_u16, ovs_be16 new_u16);
 ovs_be16 recalc_csum32(ovs_be16 old_csum, ovs_be32 old_u32, ovs_be32 new_u32);
+ovs_be16 recalc_csum48(ovs_be16 old_csum, const struct eth_addr old_mac,
+                       const struct eth_addr new_mac);
+ovs_be16 recalc_csum128(ovs_be16 old_csum, ovs_16aligned_be32 old_u32[4],
+                        const ovs_be32 new_u32[4]);
+
+#ifndef __CHECKER__
+/* Adds the 16 bits in 'new' to the partial IP checksum 'partial' and returns
+ * the updated checksum.  (To start a new checksum, pass 0 for 'partial'.  To
+ * obtain the finished checksum, pass the return value to csum_finish().) */
+static inline uint32_t
+csum_add16(uint32_t partial, ovs_be16 new)
+{
+    return partial + new;
+}
+
+/* Adds the 32 bits in 'new' to the partial IP checksum 'partial' and returns
+ * the updated checksum.  (To start a new checksum, pass 0 for 'partial'.  To
+ * obtain the finished checksum, pass the return value to csum_finish().) */
+static inline uint32_t
+csum_add32(uint32_t partial, ovs_be32 new)
+{
+    return partial + (new >> 16) + (new & 0xffff);
+}
+#else
+uint32_t csum_add16(uint32_t partial, ovs_be16);
+uint32_t csum_add32(uint32_t partial, ovs_be32);
+#endif
 
 #endif /* csum.h */