introduce set_rate_limit function for QEMUFile

This patch converts the current callers of qemu_fopen_ops().

Signed-off-by: Glauber Costa <glommer@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

1 files changed, 9 insertions, 1 deletions

diff --git a/hw/hw.h b/hw/hw.h
index c990d1a1a9..dd11f0a242 100644
--- a/hw/hw.h
+++ b/hw/hw.h
@@ -36,10 +36,17 @@ typedef int (QEMUFileCloseFunc)(void *opaque);
  */
 typedef int (QEMUFileRateLimit)(void *opaque);
 
+/* Called to change the current bandwidth allocation. This function must return
+ * the new actual bandwidth. It should be new_rate if everything goes ok, and
+ * the old rate otherwise
+ */
+typedef size_t (QEMUFileSetRateLimit)(void *opaque, size_t new_rate);
+
 QEMUFile *qemu_fopen_ops(void *opaque, QEMUFilePutBufferFunc *put_buffer,
                          QEMUFileGetBufferFunc *get_buffer,
                          QEMUFileCloseFunc *close,
-                         QEMUFileRateLimit *rate_limit);
+                         QEMUFileRateLimit *rate_limit,
+                         QEMUFileSetRateLimit *set_rate_limit);
 QEMUFile *qemu_fopen(const char *filename, const char *mode);
 QEMUFile *qemu_fopen_socket(int fd);
 QEMUFile *qemu_popen(FILE *popen_file, const char *mode);
@@ -73,6 +80,7 @@ unsigned int qemu_get_be16(QEMUFile *f);
 unsigned int qemu_get_be32(QEMUFile *f);
 uint64_t qemu_get_be64(QEMUFile *f);
 int qemu_file_rate_limit(QEMUFile *f);
+size_t qemu_file_set_rate_limit(QEMUFile *f, size_t new_rate);
 int qemu_file_has_error(QEMUFile *f);
 void qemu_file_set_error(QEMUFile *f);