4.4BSD/usr/src/sys/vax/datakit/dkcmc.h

/*
 *	datakit common-control interface definitions
 *		@(#)dkcmc.h	1.3 Garage 84/03/27
 */


/*
 *  protocol codes generated by driver
 */
#define	T_SRV		1	/* service request */
#define	  D_REINIT	  7	/* re-init after splice */

#define T_CHG		3	/* status change to/from cmc */
#define   D_CLOSE	  1	/* close a channel */
#define   D_ISCLOSED	  2	/* channel is closed */
#define   D_CLOSEALL	  3	/* close all channels */
#define   D_SPLICE	  4	/* splice two calls together */

#define T_LSTNR		4	/* keep-alive message */

#define T_REPLY		2	/* reply to channel setup */
#define   D_OK		  1	/* setup OK */
#define   D_OPEN	  2	/* channel now open */
#define   D_FAIL	  3	/* setup failed */

#define T_RESTART	8	/* cmc crashed, we should init circuit */

struct	lmsg	{
	char	type ;		/* message type T_??? */
	char	srv ;		/* message code D_??? */
	short	param0 ;		/* various aditional info */
	short	param1 ;
	short	param2 ;
	short	param3 ;
	short	param4 ;
} ;

#define CMCFMT	"bbsssss"
#define	CMCSIZ	12

/*
 *	active setup requests
 *	(used in dkctl.c)
 */

struct dksetupreq {
	int	(*rq_endfcn)() ;
	caddr_t	rq_endparm ;
	struct lmsg rq_msg ;
};