Import from old repository commit 61ef2b42a9c4ba8e1600f15bb0236765edc2ad45.v0.90.0

1 files changed, 31 insertions, 0 deletions

diff --git a/lib/csum.h b/lib/csum.h
new file mode 100644
index 00000000..25de1ac4
--- /dev/null
+++ b/lib/csum.h
@@ -0,0 +1,31 @@
+/*
+ * Copyright (c) 2008 Nicira Networks.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef CSUM_H
+#define CSUM_H 1
+
+#include <stddef.h>
+#include <stdint.h>
+
+uint16_t csum(const void *, size_t);
+uint32_t csum_add16(uint32_t partial, uint16_t);
+uint32_t csum_add32(uint32_t partial, uint32_t);
+uint32_t csum_continue(uint32_t partial, const void *, size_t);
+uint16_t csum_finish(uint32_t partial);
+uint16_t recalc_csum16(uint16_t old_csum, uint16_t old_u16, uint16_t new_u16);
+uint16_t recalc_csum32(uint16_t old_csum, uint32_t old_u32, uint32_t new_u32);
+
+#endif /* csum.h */