add sockopt for getting a sequence number from the kernel (for PEX).

[unix-history] / usr / src / sys / netns / ns_pcb.h

/*
 * Copyright (c) 1982 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 *
 *	@(#)ns_pcb.h	6.2 (Berkeley) %G%
 */

/*
 * Ns protocol interface control block.
 */
struct nspcb {
	struct	nspcb *nsp_next;	/* doubly linked list */
	struct	nspcb *nsp_prev;
	struct	nspcb *nsp_head;
	struct	socket *nsp_socket;	/* back pointer to socket */
	struct	ns_addr nsp_faddr;	/* destination address */
	struct	ns_addr nsp_laddr;	/* socket's address */
	caddr_t	nsp_pcb;		/* protocol specific stuff */
	struct	route nsp_route;	/* routing information */
	union	ns_net nsp_lastnet;	/* validate cached route for dg socks*/
	long	nsp_notify_param;	/* extra info passed via ns_pcbnotify*/
	short	nsp_flags;
	u_char	nsp_dpt;		/* default packet type for idp_output*/
	u_char	nsp_rpt;		/* last received packet type by
								idp_input() */
};

/* possible flags */

#define NSP_IN_ABORT	0x1		/* calling abort through socket */
#define NSP_RAWIN	0x2		/* show headers on input */
#define NSP_RAWOUT	0x4		/* show header on output */

#define	NS_WILDCARD	1

#define nsp_lport nsp_laddr.x_port
#define nsp_fport nsp_faddr.x_port

#define	sotonspcb(so)		((struct nspcb *)((so)->so_pcb))

/*
 * Nominal space allocated to a ns socket.
 */
#define	NSSNDQ		2048
#define	NSRCVQ		2048


#ifdef KERNEL
extern struct nspcb nspcb;			/* head of list */
extern struct nspcb *ns_pcblookup();
#endif