Merge TinyOS 2.1.1 into master.

[tinyos-2.x.git] / support / sdk / c / blip / libtcp / circ.h

diff --git a/support/sdk/c/blip/libtcp/circ.h b/support/sdk/c/blip/libtcp/circ.h
new file mode 100644 (file)
index 0000000..d71f3a0
--- /dev/null
+++ b/support/sdk/c/blip/libtcp/circ.h
@@ -0,0 +1,48 @@
+/*
+ * "Copyright (c) 2008, 2009 The Regents of the University  of California.
+ * All rights reserved."
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation for any purpose, without fee, and without written agreement is
+ * hereby granted, provided that the above copyright notice, the following
+ * two paragraphs and the author appear in all copies of this software.
+ *
+ * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
+ * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
+ * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
+ * CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
+ * ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
+ * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS."
+ *
+ */
+#ifndef __CIRC_H_
+#define __CIRC_H_
+
+#include <stdint.h>
+
+int circ_buf_init(void *data, int len, uint32_t seqno);
+
+
+int circ_buf_write(char *buf, uint32_t sseqno,
+                   uint8_t *data, int len);
+
+
+int circ_buf_read(void *buf, uint32_t sseqno,
+                  uint8_t *data, int len);
+
+
+int circ_shorten_head(void *buf, uint32_t seqno);
+
+/* read from the head of the buffer, moving the data pointer forward */
+// int circ_buf_read_head(char *buf, char **data);
+
+void circ_buf_dump(void *buf);
+
+uint32_t circ_get_seqno(void *buf);
+void circ_set_seqno(void *buf, uint32_t seqno);
+
+#endif