X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=lib%2Fofpbuf.h;h=0c12162c76032f1be495fb4e59b8d7a82cb49924;hb=6cbbf4fa07f12f7f3977a1b3b63783220f4db3ea;hp=15f0ab1626e2ee56935628aadd034358c8fd19f0;hpb=31ac1e590b9bb2a2ce7c70cd7c8fd2db0fb8e481;p=sliver-openvswitch.git

diff --git a/lib/ofpbuf.h b/lib/ofpbuf.h
index 15f0ab162..0c12162c7 100644
--- 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, 2013 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
@@ -43,6 +43,7 @@ struct ofpbuf {
     size_t size;                /* Number of bytes in use. */
 
     void *l2;                   /* Link-level header. */
+    void *l2_5;                 /* MPLS label stack */
     void *l3;                   /* Network-level header. */
     void *l4;                   /* Transport-level header. */
     void *l7;                   /* Application data. */
@@ -51,16 +52,14 @@ struct ofpbuf {
     void *private_p;            /* Private pointer for use by owner. */
 };
 
-/* Declares NAME as a SIZE-byte array aligned properly for storing any kind of
- * data.  For use with ofpbuf_use_stack(). */
-#define OFPBUF_STACK_BUFFER(NAME, SIZE) uint64_t NAME[DIV_ROUND_UP(SIZE, 8)]
-
 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 +68,8 @@ 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 +91,14 @@ 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)
@@ -103,6 +107,12 @@ static inline struct ofpbuf *ofpbuf_from_list(const struct list *list)
 }
 void ofpbuf_list_delete(struct list *);
 
+static inline bool
+ofpbuf_equal(const struct ofpbuf *a, const struct ofpbuf *b)
+{
+    return a->size == b->size && memcmp(a->data, b->data, a->size) == 0;
+}
+
 #ifdef  __cplusplus
 }
 #endif