netisr.h

T－kernel Tcp/ip Protocol Stack Sample

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 * Copyright (C) 2001-2004 MITSUBISHI ELECTRIC CORPORATION and
 * RENESAS SOLUTIONS CORPORATION
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 *	This product includes software developed by the University of
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 *    may be used to endorse or promote products derived from this software
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 *	@(#)netisr.h	8.1 (Berkeley) 6/10/93
 * $Id: netisr.h,v 1.9 1996/05/24 01:35:11 julian Exp $
 */

#ifndef _NET_NETISR_H_
#define _NET_NETISR_H_

/*
 * The networking code runs off software interrupts.
 *
 * You can switch into the network by doing splnet() and return by splx().
 * The software interrupt level for the network is higher than the software
 * level for the clock (so you can enter the network in routines called
 * at timeout time).
 */
#if defined(vax) || defined(tahoe)
#define	setsoftnet()	mtpr(SIRR, 12)
#endif

/*
 * Each ``pup-level-1'' input queue has a bit in a ``netisr'' status
 * word which is used to de-multiplex a single software
 * interrupt used for scheduling the network code to calls
 * on the lowest level routine of each protocol.
 */
#define	NETISR_RAW	0		/* same as AF_UNSPEC */
#define	NETISR_IP	2		/* same as AF_INET */
#define	NETISR_IMP	3		/* same as AF_IMPLINK */
#define	NETISR_NS	6		/* same as AF_NS */
#define	NETISR_ISO	7		/* same as AF_ISO */
#define	NETISR_CCITT	10		/* same as AF_CCITT */
#define NETISR_ATALK    16              /* same as AF_APPLETALK */
#define	NETISR_ARP	18		/* same as AF_LINK */
#define NETISR_IPX	23		/* same as AF_IPX */
#define	NETISR_ISDN	26		/* same as AF_E164 */
#define	NETISR_PPP	27		/* PPP soft interrupt */
#ifdef	EMBEDDED_IF
#define	NETISR_EIPC	30		/* Embedded TCP/IP Non-Blocking I/F */
#endif	/* EMBEDDED_IF */

#ifndef	EMB_SYS
#define	schednetisr(anisr)	{ netisr |= 1<<(anisr); setsoftnet(); }
#endif /* !EMB_SYS */

#ifndef LOCORE
#ifdef KERNEL
extern volatile unsigned int	netisr;	/* scheduling bits for network */

typedef void netisr_t(void);

struct netisrtab {
	int nit_num;
	netisr_t *nit_isr;
};

#define NETISR_SET(num, isr) \
	static struct netisrtab mod_nit = { num, isr }; \
	DATA_SET(netisr_set, mod_nit);

int register_netisr __P((int, netisr_t *));

#endif
#endif

#endif