1 files changed, 19 insertions, 0 deletions
diff --git a/include/asterisk/strings.h b/include/asterisk/strings.h
index 68ecb2048..2fff9c133 100644
--- a/include/asterisk/strings.h
+++ b/include/asterisk/strings.h
@@ -23,6 +23,7 @@
 #ifndef _ASTERISK_STRINGS_H
 #define _ASTERISK_STRINGS_H
 
+#include <stdlib.h>
 #include <string.h>
 #include <stdarg.h>
 
@@ -263,4 +264,22 @@ struct ast_realloca {
 		(ra)->ptr; \
 	})
 
+/*!
+ * \brief Compute a hash value on a string
+ *
+ * This famous hash algorithm was written by Dan Bernstein and is
+ * commonly used.
+ *
+ * http://www.cse.yorku.ca/~oz/hash.html
+ */
+static force_inline int ast_str_hash(const char *str)
+{
+	int hash = 5381;
+
+	while (*str)
+		hash = hash * 33 ^ *str++;
+
+	return abs(hash);
+}
+
 #endif /* _ASTERISK_STRINGS_H */