Source to bsd/netat/at_pcb.h

/*
 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
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 * The contents of this file constitute Original Code as defined in and
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 * "License").  You may not use this file except in compliance with the
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 * http://www.apple.com/publicsource and read it before using this file.
 * 
 * This Original Code and all software distributed under the License are
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 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
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/*
 *	Copyright (c) 1997-1999 Apple Computer, Inc.
 *	All Rights Reserved.
 */
/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
/*
 * Copyright (c) 1982, 1986, 1990, 1993
 *	The Regents of the University of California.  All rights reserved.
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 * are met:
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 *    must display the following acknowledgement:
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 */

/* at_pcb.h */

/*
 * Common structure pcb for internet protocol implementation.
 * Here are stored pointers to local and foreign host table
 * entries, local and foreign socket numbers, and pointers
 * up (to a socket structure) and down (to a protocol-specific)
 * control block.
 */
struct atpcb {
	struct atpcb 	*atpcb_next,	/* pointers to other pcb's */
			*atpcb_prev,
			*atpcb_head;	/* pointer back to chain of atpcb's
					   for this protocol */
	struct socket 	*atpcb_socket;	/* back pointer to socket */
	u_char		ddptype,	/* DDP type */
			lport,		/* local DDP socket */
			rport;          /* remote DDP socket */
	struct at_addr  laddr,		/* local net and node */
			raddr;		/* remote net and node */
	int		ddp_flags;	/* generic IP/datagram flags */
	caddr_t		at_ppcb;	/* pointer to per-protocol pcb */

  /* from the gref structure */

	void *info;
	gbuf_t *ichead;
	gbuf_t *ictail;
	gbuf_t *rdhead;
	gbuf_t *rdtail;
	unsigned char	proto;		/* old-style ATPROTO_* */
	unsigned char  errno;
	unsigned short sevents;
	int pid;
	atlock_t lock;
	atevent_t event;
	atevent_t iocevent;
	int (*writeable)();
	int (*readable)();
	struct selinfo si;	/* BSD 4.4 selinfo structure for 
				   selrecord/selwakeup */
};

#define sotoatpcb(so)((struct atpcb *)(so)->so_pcb)

/* ddp_flags */
#define DDPFLG_CHKSUM	 0x01	/* DDP checksums to be used on this connection */
#define DDPFLG_SLFSNDOFF 0x08	/* packets sent to the cable-multicast address
				   on this socket should not be looped back */
#define DDPFLG_HDRINCL 	 0x08	/* user supplies entire DDP header */
#define DDPFLG_STRIPHDR	0x200	/* drop DDP header on receive (raw) */

#ifdef KERNEL
typedef struct atpcb gref_t;

int	 at_pcballoc __P((struct socket *, struct atpcb *));
int	 at_pcbdetach __P((struct atpcb *));
int	 at_pcbbind __P((struct atpcb *, struct sockaddr *));
void	 at_setpeeraddr __P((struct atpcb *, struct sockaddr *));
void	 at_setsockaddr __P((struct atpcb *, struct sockaddr *));
#endif