ofp-util: Work on decoding OF1.1 flow_mods.

[openvswitch] / lib / ofpbuf.h

diff --git a/lib/ofpbuf.h b/lib/ofpbuf.h
index 15f0ab1626e2ee56935628aadd034358c8fd19f0..520455dc36ed7a5d3708ea9b39f6e1b98471e40c 100644 (file)
--- a/lib/ofpbuf.h
+++ b/lib/ofpbuf.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2008, 2009, 2010 Nicira Networks.
+ * Copyright (c) 2008, 2009, 2010, 2011, 2012 Nicira, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -28,8 +28,8 @@ extern "C" {
 
 enum ofpbuf_source {
     OFPBUF_MALLOC,              /* Obtained via malloc(). */
-    OFPBUF_STACK,               /* Stack space or static buffer. */
-    OFPBUF_CONST                /* Must not be expanded. */
+    OFPBUF_STACK,               /* Un-movable stack space or static buffer. */
+    OFPBUF_STUB                 /* Starts on stack, may expand into heap. */
 };
 
 /* Buffer for holding arbitrary data.  An ofpbuf is automatically reallocated
@@ -57,10 +57,12 @@ struct ofpbuf {
 
 void ofpbuf_use(struct ofpbuf *, void *, size_t);
 void ofpbuf_use_stack(struct ofpbuf *, void *, size_t);
+void ofpbuf_use_stub(struct ofpbuf *, void *, size_t);
 void ofpbuf_use_const(struct ofpbuf *, const void *, size_t);
 
 void ofpbuf_init(struct ofpbuf *, size_t);
 void ofpbuf_uninit(struct ofpbuf *);
+void *ofpbuf_get_uninit_pointer(struct ofpbuf *);
 void ofpbuf_reinit(struct ofpbuf *, size_t);
 
 struct ofpbuf *ofpbuf_new(size_t);
@@ -69,6 +71,8 @@ struct ofpbuf *ofpbuf_clone(const struct ofpbuf *);
 struct ofpbuf *ofpbuf_clone_with_headroom(const struct ofpbuf *,
                                           size_t headroom);
 struct ofpbuf *ofpbuf_clone_data(const void *, size_t);
+struct ofpbuf *ofpbuf_clone_data_with_headroom(const void *, size_t,
+                                               size_t headroom);
 void ofpbuf_delete(struct ofpbuf *);
 
 void *ofpbuf_at(const struct ofpbuf *, size_t offset, size_t size);
@@ -90,11 +94,14 @@ size_t ofpbuf_tailroom(const struct ofpbuf *);
 void ofpbuf_prealloc_headroom(struct ofpbuf *, size_t);
 void ofpbuf_prealloc_tailroom(struct ofpbuf *, size_t);
 void ofpbuf_trim(struct ofpbuf *);
+void ofpbuf_padto(struct ofpbuf *, size_t);
 
 void ofpbuf_clear(struct ofpbuf *);
 void *ofpbuf_pull(struct ofpbuf *, size_t);
 void *ofpbuf_try_pull(struct ofpbuf *, size_t);
 
+void *ofpbuf_steal_data(struct ofpbuf *);
+
 char *ofpbuf_to_string(const struct ofpbuf *, size_t maxbytes);
 
 static inline struct ofpbuf *ofpbuf_from_list(const struct list *list)