"VLIB_BUFFER_PRE_DATA_SIZE must be divisible by cache line size");
#define VLIB_BUFFER_HDR_SIZE (sizeof(vlib_buffer_t) - VLIB_BUFFER_PRE_DATA_SIZE)
+#define VLIB_BUFFER_INVALID_INDEX 0xffffffff
/** \brief Prefetch buffer metadata.
The first 64 bytes of buffer contains most header information