Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / ipxe / src / include / ipxe / fragment.h

diff --git a/qemu/roms/ipxe/src/include/ipxe/fragment.h b/qemu/roms/ipxe/src/include/ipxe/fragment.h
new file mode 100644 (file)
index 0000000..e311ad1
--- /dev/null
+++ b/qemu/roms/ipxe/src/include/ipxe/fragment.h
@@ -0,0 +1,72 @@
+#ifndef _IPXE_FRAGMENT_H
+#define _IPXE_FRAGMENT_H
+
+/** @file
+ *
+ * Fragment reassembly
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <stdint.h>
+#include <ipxe/list.h>
+#include <ipxe/iobuf.h>
+#include <ipxe/retry.h>
+
+/** Fragment reassembly timeout */
+#define FRAGMENT_TIMEOUT ( TICKS_PER_SEC / 2 )
+
+/** A fragment reassembly buffer */
+struct fragment {
+       /* List of fragment reassembly buffers */
+       struct list_head list;
+       /** Reassembled packet */
+       struct io_buffer *iobuf;
+       /** Length of non-fragmentable portion of reassembled packet */
+       size_t hdrlen;
+       /** Reassembly timer */
+       struct retry_timer timer;
+       /** Fragment reassembler */
+       struct fragment_reassembler *fragments;
+};
+
+/** A fragment reassembler */
+struct fragment_reassembler {
+       /** List of fragment reassembly buffers */
+       struct list_head list;
+       /**
+        * Check if fragment matches fragment reassembly buffer
+        *
+        * @v fragment          Fragment reassembly buffer
+        * @v iobuf             I/O buffer
+        * @v hdrlen            Length of non-fragmentable potion of I/O buffer
+        * @ret is_fragment     Fragment matches this reassembly buffer
+        */
+       int ( * is_fragment ) ( struct fragment *fragment,
+                               struct io_buffer *iobuf, size_t hdrlen );
+       /**
+        * Get fragment offset
+        *
+        * @v iobuf             I/O buffer
+        * @v hdrlen            Length of non-fragmentable potion of I/O buffer
+        * @ret offset          Offset
+        */
+       size_t ( * fragment_offset ) ( struct io_buffer *iobuf, size_t hdrlen );
+       /**
+        * Check if more fragments exist
+        *
+        * @v iobuf             I/O buffer
+        * @v hdrlen            Length of non-fragmentable potion of I/O buffer
+        * @ret more_frags      More fragments exist
+        */
+       int ( * more_fragments ) ( struct io_buffer *iobuf, size_t hdrlen );
+       /** Associated IP statistics */
+       struct ip_statistics *stats;
+};
+
+extern struct io_buffer *
+fragment_reassemble ( struct fragment_reassembler *fragments,
+                     struct io_buffer *iobuf, size_t *hdrlen );
+
+#endif /* _IPXE_FRAGMENT_H */