Added CMake building system for libmemif

[vpp.git] / extras / libmemif / src / memif.h

diff --git a/extras/libmemif/src/memif.h b/extras/libmemif/src/memif.h
index 11918ea..776baaf 100644 (file)
--- a/extras/libmemif/src/memif.h
+++ b/extras/libmemif/src/memif.h
@@ -18,12 +18,14 @@
 #ifndef _MEMIF_H_
 #define _MEMIF_H_
 
+#include <stdint.h>
+
 #ifndef MEMIF_CACHELINE_SIZE
 #define MEMIF_CACHELINE_SIZE 64
 #endif
 
-#define MEMIF_COOKIE           0x3E31F10
-#define MEMIF_VERSION_MAJOR    1
+#define MEMIF_COOKIE           0x3E31F20
+#define MEMIF_VERSION_MAJOR    2
 #define MEMIF_VERSION_MINOR    0
 #define MEMIF_VERSION          ((MEMIF_VERSION_MAJOR << 8) | MEMIF_VERSION_MINOR)
 
@@ -58,7 +60,7 @@ typedef enum
 } memif_interface_mode_t;
 
 typedef uint16_t memif_region_index_t;
-typedef uint64_t memif_region_offset_t;
+typedef uint32_t memif_region_offset_t;
 typedef uint64_t memif_region_size_t;
 typedef uint16_t memif_ring_index_t;
 typedef uint32_t memif_interface_id_t;
@@ -103,6 +105,7 @@ typedef struct __attribute__ ((packed))
   memif_region_index_t region;
   memif_region_offset_t offset;
   memif_log2_ring_size_t log2_ring_size;
+  uint16_t private_hdr_size;   /* used for private metadata */
 } memif_msg_add_ring_t;
 
 typedef struct __attribute__ ((packed))
@@ -148,15 +151,13 @@ typedef struct __attribute__ ((packed))
   uint16_t flags;
 #define MEMIF_DESC_FLAG_NEXT (1 << 0)
   memif_region_index_t region;
-  uint32_t buffer_length;
   uint32_t length;
-  uint8_t reserved[4];
   memif_region_offset_t offset;
-  uint64_t metadata;
+  uint32_t metadata;
 } memif_desc_t;
 
-_Static_assert (sizeof (memif_desc_t) == 32,
-               "Size of memif_dsct_t must be 32");
+_Static_assert (sizeof (memif_desc_t) == 16,
+               "Size of memif_dsct_t must be 16 bytes");
 
 #define MEMIF_CACHELINE_ALIGN_MARK(mark) \
   uint8_t mark[0] __attribute__((aligned(MEMIF_CACHELINE_SIZE)))