#if !defined __transmitbuff_h#define __transmitbuff_h#include "ntp.h"#if defined HAVE_IO_COMPLETION_PORT# include "ntp_iocompletionport.h"#endif#define TRANSMIT_BUF_LENGTH 1024/* * Format of a transmitbuf.  These are used by the asynchronous receive * routine to store incoming packets and related information. */typedef struct transmitbuf {	struct transmitbuf *next;		/* next buffer in chain */#if defined HAVE_IO_COMPLETION_PORT        IoCompletionInfo	iocompletioninfo;	WSABUF			wsabuf;#endif	/*	 * union {	 *	struct	pkt		pkt;	 *	struct	ntp_control	ctlpkt;	 *} pkt;	 */	char pkt[512];} transmitbuf;extern	void	init_transmitbuff	P((void));/* freetransmitbuf - make a single transmitbuf available for reuse */extern	void	free_transmit_buffer P((struct transmitbuf *));/*  Get a free buffer (typically used so an async *  read can directly place data into the buffer * *  The buffer is removed from the free list. Make sure *  you put it back with freetransmitbuf() or  */extern	struct transmitbuf *get_free_transmit_buffer P((void));#endif /* defined __transmitbuff_h */