ip_fil_compat.h

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//==========================================================================
//
//      include/netinet/ip_compat.h
//
//      
//
//==========================================================================
//####BSDCOPYRIGHTBEGIN####
//
// -------------------------------------------
//
// Portions of this software may have been derived from OpenBSD or other sources,
// and are covered by the appropriate copyright disclaimers included herein.
//
// -------------------------------------------
//
//####BSDCOPYRIGHTEND####
//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):    gthomas
// Contributors: gthomas
// Date:         2000-01-10
// Purpose:      
// Description:  
//              
//
//####DESCRIPTIONEND####
//
//==========================================================================


/* $OpenBSD: ip_fil_compat.h,v 1.11 1999/12/15 05:20:21 kjell Exp $ */
/*
 * Copyright (C) 1993-1998 by Darren Reed.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that this notice is preserved and due credit is given
 * to the original author and the contributors.
 *
 * @(#)ip_compat.h	1.8 1/14/96
 */

#ifndef	_NETINET_IP_COMPAT_H__
#define	_NETINET_IP_COMPAT_H__

#ifndef	__P
# ifdef	__STDC__
#  define	__P(x)  x
# else
#  define	__P(x)  ()
# endif
#endif
#ifndef	__STDC__
# undef		const
# define	const
#endif

#ifndef	SOLARIS
#define	SOLARIS	(defined(sun) && (defined(__svr4__) || defined(__SVR4)))
#endif

#if defined(_KERNEL) || defined(KERNEL) || defined(__KERNEL__)
# undef	KERNEL
# undef	_KERNEL
# undef 	__KERNEL__
# define	KERNEL
# define	_KERNEL
# define 	__KERNEL__
#endif

#if defined(__SVR4) || defined(__svr4__) || defined(__sgi)
#define index   strchr
# if !defined(KERNEL)
#  define	bzero(a,b)	memset(a,0,b)
#  define	bcmp		memcmp
#  define	bcopy(a,b,c)	memmove(b,a,c)
# endif
#endif

#ifndef offsetof
#define offsetof(t,m) (int)((&((t *)0L)->m))
#endif

#if defined(__sgi) || defined(bsdi)
struct  ether_addr {
        u_char  ether_addr_octet[6];
};
#endif

#if defined(__sgi) && !defined(IPFILTER_LKM)
# ifdef __STDC__
#  define IPL_EXTERN(ep) ipfilter##ep
# else
#  define IPL_EXTERN(ep) ipfilter/**/ep
# endif
#else
# ifdef __STDC__
#  define IPL_EXTERN(ep) ipl##ep
# else
#  define IPL_EXTERN(ep) ipl/**/ep
# endif
#endif

#ifdef	linux
# include <sys/sysmacros.h>
#endif
#if	SOLARIS
# define	MTYPE(m)	((m)->b_datap->db_type)
# include	<sys/isa_defs.h>
# include	<sys/ioccom.h>
# include	<sys/sysmacros.h>
# include	<sys/kmem.h>
/*
 * because Solaris 2 defines these in two places :-/
 */
# undef	IPOPT_EOL
# undef	IPOPT_NOP
# undef	IPOPT_LSRR
# undef	IPOPT_RR
# undef	IPOPT_SSRR
# ifndef	KERNEL
#  define	_KERNEL
#  undef	RES_INIT
#  include <inet/common.h>
#  include <inet/ip.h>
#  include <inet/ip_ire.h>
#  undef	_KERNEL
# else /* _KERNEL */
#  include <inet/common.h>
#  include <inet/ip.h>
#  include <inet/ip_ire.h>
# endif /* _KERNEL */
# if SOLARIS2 >= 8
#  include <netinet/ip6.h>
#  include <inet/ip6.h>
#  define	ipif_local_addr	ipif_lcl_addr
# endif
#else
# if !defined(__sgi)
typedef	 int	minor_t;
#endif
#endif /* SOLARIS */
#define	IPMINLEN(i, h)	((i)->ip_len >= ((i)->ip_hl * 4 + sizeof(struct h)))

#ifndef	IP_OFFMASK
#define	IP_OFFMASK	0x1fff
#endif

#if	BSD > 199306
# define	USE_QUAD_T
# define	U_QUAD_T	u_quad_t
# define	QUAD_T		quad_t
#else /* BSD > 199306 */
# define	U_QUAD_T	u_long
# define	QUAD_T		long
#endif /* BSD > 199306 */

/*
 * These operating systems already take care of the problem for us.
 */
#if defined(__NetBSD__) || defined(__OpenBSD__) || defined(__FreeBSD__) || \
    defined(__sgi)
typedef u_int32_t       u_32_t;
#else
/*
 * Really, any arch where sizeof(long) != sizeof(int).
 */
# if defined(__alpha__) || defined(__alpha) || defined(_LP64)
typedef unsigned int    u_32_t;
# else
typedef unsigned long   u_32_t;
# endif
#endif /* __NetBSD__ || __OpenBSD__ || __FreeBSD__ || __sgi */

#ifndef	MAX
#define	MAX(a,b)	(((a) > (b)) ? (a) : (b))
#endif

/*
 * Security Options for Intenet Protocol (IPSO) as defined in RFC 1108.
 *
 * Basic Option
 *
 * 00000001   -   (Reserved 4)
 * 00111101   -   Top Secret
 * 01011010   -   Secret
 * 10010110   -   Confidential
 * 01100110   -   (Reserved 3)
 * 11001100   -   (Reserved 2)
 * 10101011   -   Unclassified
 * 11110001   -   (Reserved 1)
 */
#define	IPSO_CLASS_RES4		0x01
#define	IPSO_CLASS_TOPS		0x3d
#define	IPSO_CLASS_SECR		0x5a
#define	IPSO_CLASS_CONF		0x96
#define	IPSO_CLASS_RES3		0x66
#define	IPSO_CLASS_RES2		0xcc
#define	IPSO_CLASS_UNCL		0xab
#define	IPSO_CLASS_RES1		0xf1

#define	IPSO_AUTH_GENSER	0x80
#define	IPSO_AUTH_ESI		0x40
#define	IPSO_AUTH_SCI		0x20
#define	IPSO_AUTH_NSA		0x10
#define	IPSO_AUTH_DOE		0x08
#define	IPSO_AUTH_UN		0x06
#define	IPSO_AUTH_FTE		0x01

/*
 * IP option #defines
 */
/*#define	IPOPT_RR	7 */
#define	IPOPT_ZSU	10	/* ZSU */
#define	IPOPT_MTUP	11	/* MTUP */
#define	IPOPT_MTUR	12	/* MTUR */
#define	IPOPT_ENCODE	15	/* ENCODE */
/*#define	IPOPT_TS	68 */
#define	IPOPT_TR	82	/* TR */
/*#define	IPOPT_SECURITY	130 */
/*#define	IPOPT_LSRR	131 */
#define	IPOPT_E_SEC	133	/* E-SEC */
#define	IPOPT_CIPSO	134	/* CIPSO */
/*#define	IPOPT_SATID	136 */
#ifndef	IPOPT_SID
# define	IPOPT_SID	IPOPT_SATID
#endif
/*#define	IPOPT_SSRR	137 */
#define	IPOPT_ADDEXT	147	/* ADDEXT */
#define	IPOPT_VISA	142	/* VISA */
#define	IPOPT_IMITD	144	/* IMITD */
#define	IPOPT_EIP	145	/* EIP */
#define	IPOPT_FINN	205	/* FINN */


#if defined(__FreeBSD__) && defined(KERNEL)
# if __FreeBSD__ < 3
#  include <machine/spl.h>
# endif
# if defined(IPFILTER_LKM) && !defined(ACTUALLY_LKM_NOT_KERNEL)
#  define	ACTUALLY_LKM_NOT_KERNEL
# endif
#endif /* __FreeBSD__ && KERNEL */

/*
 * Build some macros and #defines to enable the same code to compile anywhere
 * Well, that's the idea, anyway :-)
 */
#ifdef KERNEL
# if SOLARIS
#  define	ATOMIC_INC(x)		{ mutex_enter(&ipf_rw); (x)++; \
					  mutex_exit(&ipf_rw); }
#  define	ATOMIC_DEC(x)		{ mutex_enter(&ipf_rw); (x)--; \
					  mutex_exit(&ipf_rw); }
#  define	MUTEX_ENTER(x)		mutex_enter(x)
#  if 1
#   define	KRWLOCK_T		krwlock_t
#   define	READ_ENTER(x)		rw_enter(x, RW_READER)
#   define	WRITE_ENTER(x)		rw_enter(x, RW_WRITER)
#   define	RW_UPGRADE(x)		{ if (rw_tryupgrade(x) == 0) { \
					      rw_exit(x); \
					      rw_enter(x, RW_WRITER); } \
					}
#   define	MUTEX_DOWNGRADE(x)	rw_downgrade(x)
#   define	RWLOCK_INIT(x, y, z)	rw_init((x), (y), RW_DRIVER, (z))
#   define	RWLOCK_EXIT(x)		rw_exit(x)
#   define	RW_DESTROY(x)		rw_destroy(x)
#  else
#   define	KRWLOCK_T		kmutex_t
#   define	READ_ENTER(x)		mutex_enter(x)
#   define	WRITE_ENTER(x)		mutex_enter(x)
#   define	MUTEX_DOWNGRADE(x)	;
#   define	RWLOCK_INIT(x, y, z)	mutex_init((x), (y), MUTEX_DRIVER, (z))
#   define	RWLOCK_EXIT(x)		mutex_exit(x)
#   define	RW_DESTROY(x)		mutex_destroy(x)
#  endif
#  define	MUTEX_EXIT(x)	mutex_exit(x)
#  define	MTOD(m,t)	(t)((m)->b_rptr)
#  define	IRCOPY(a,b,c)	copyin((a), (b), (c))
#  define	IWCOPY(a,b,c)	copyout((a), (b), (c))
#  define	FREE_MB_T(m)	freemsg(m)
#  define	SPL_NET(x)	;
#  define	SPL_IMP(x)	;
#  undef	SPL_X
#  define	SPL_X(x)	;
#  ifdef sparc
#   define	ntohs(x)	(x)
#   define	ntohl(x)	(x)
#   define	htons(x)	(x)
#   define	htonl(x)	(x)
#  endif /* sparc */
#  define	KMALLOC(a,b)	(a) = (b)kmem_alloc(sizeof(*(a)), KM_NOSLEEP)
#  define	KMALLOCS(a,b,c)	(a) = (b)kmem_alloc((c), KM_NOSLEEP)
#  define	GET_MINOR(x)	getminor(x)
typedef	struct	qif	{
	struct	qif	*qf_next;
	ill_t	*qf_ill;
	kmutex_t	qf_lock;
	void	*qf_iptr;
	void	*qf_optr;
	queue_t	*qf_in;
	queue_t	*qf_out;
	struct	qinit	*qf_wqinfo;
	struct	qinit	*qf_rqinfo;
	struct	qinit	qf_wqinit;
	struct	qinit	qf_rqinit;
	mblk_t	*qf_m;	/* These three fields are for passing data up from */
	queue_t	*qf_q;	/* fr_qin and fr_qout to the packet processing. */
	size_t	qf_off;
	size_t	qf_len;	/* this field is used for in ipfr_fastroute */
	char	qf_name[8];
	/*
	 * in case the ILL has disappeared...
	 */
	size_t	qf_hl;	/* header length */
} qif_t;
extern	ill_t	*get_unit __P((char *));
#  define	GETUNIT(n)	get_unit((n))
# else /* SOLARIS */
#  if defined(__sgi)
#   define  hz HZ
#   include <sys/ksynch.h>
#   define	IPF_LOCK_PL	plhi
#   include <sys/sema.h>
#undef kmutex_t
typedef struct {
	lock_t *l;
	int pl;
} kmutex_t;
#   define	ATOMIC_INC(x)		{ MUTEX_ENTER(&ipf_rw); \
					  (x)++; MUTEX_EXIT(&ipf_rw); }
#   define	ATOMIC_DEC(x)		{ MUTEX_ENTER(&ipf_rw); \
					  (x)--; MUTEX_EXIT(&ipf_rw); }
#   define	MUTEX_ENTER(x)		(x)->pl = LOCK((x)->l, IPF_LOCK_PL);
#   define	KRWLOCK_T		kmutex_t
#   define	READ_ENTER(x)		MUTEX_ENTER(x)
#   define	WRITE_ENTER(x)		MUTEX_ENTER(x)
#   define	RW_UPGRADE(x)		;
#   define	MUTEX_DOWNGRADE(x)	;
#   define	RWLOCK_EXIT(x)	MUTEX_EXIT(x)
#   define	MUTEX_EXIT(x)	UNLOCK((x)->l, (x)->pl);
#  else /* __sgi */
#   define	ATOMIC_INC(x)		(x)++
#   define	ATOMIC_DEC(x)		(x)--
#   define	MUTEX_ENTER(x)		;
#   define	READ_ENTER(x)	;
#   define	WRITE_ENTER(x)	;
#   define	RW_UPGRADE(x)	;
#   define	MUTEX_DOWNGRADE(x)	;
#   define	RWLOCK_EXIT(x)	;
#   define	MUTEX_EXIT(x)	;
#  endif /* __sgi */
#  ifndef linux
#   define	FREE_MB_T(m)	m_freem(m)
#   define	MTOD(m,t)	mtod(m,t)
#   define	IRCOPY(a,b,c)	bcopy((a), (b), (c))
#   define	IWCOPY(a,b,c)	bcopy((a), (b), (c))
#  endif /* !linux */
# endif /* SOLARIS */

# ifdef sun
#  if !SOLARIS
#   include	<sys/kmem_alloc.h>
#   define	GETUNIT(n)	ifunit((n), IFNAMSIZ)
#  endif
# else
#  ifndef	linux
#   define	GETUNIT(n)	ifunit((n))
#  endif
# endif /* sun */

# if defined(sun) && !defined(linux) || defined(__sgi)
#  define	UIOMOVE(a,b,c,d)	uiomove((caddr_t)a,b,c,d)
#  define	SLEEP(id, n)	sleep((id), PZERO+1)
#  define	WAKEUP(id)	wakeup(id)
#  define	KFREE(x)	kmem_free((char *)(x), sizeof(*(x)))
#  define	KFREES(x,s)	kmem_free((char *)(x), (s))
#  if !SOLARIS
extern	void	m_copydata __P((struct mbuf *, int, int, caddr_t));
extern	void	m_copyback __P((struct mbuf *, int, int, caddr_t));
#  endif
#  ifdef __sgi
#   include <sys/kmem.h>
#   include <sys/ddi.h>
#   define	KMALLOC(a,b)	(a) = (b)kmem_alloc(sizeof(*(a)), KM_NOSLEEP)
#   define	KMALLOCS(a,b,c)	(a) = (b)kmem_alloc((c), KM_NOSLEEP)
#   define	GET_MINOR(x)	getminor(x)
#  else
#   if !SOLARIS
#    define	KMALLOC(a,b)	(a) = (b)new_kmem_alloc(sizeof(*(a)), \
							KMEM_NOSLEEP)
#    define	KMALLOCS(a,b,c)	(a) = (b)new_kmem_alloc((c), KMEM_NOSLEEP)
#   endif /* SOLARIS */
#  endif /* __sgi */
# endif /* sun && !linux */
# ifndef	GET_MINOR
#  define	GET_MINOR(x)	minor(x)
# endif
# if (BSD >= 199306) || defined(__FreeBSD__)
#  include <vm/vm.h>
#  if !defined(__FreeBSD__) || (defined (__FreeBSD__) && __FreeBSD__>=3)
#   include <vm/vm_extern.h>
#   include <sys/proc.h>
extern	vm_map_t	kmem_map;
#  else /* !__FreeBSD__ || (__FreeBSD__ && __FreeBSD__>=3) */
#   include <vm/vm_kern.h>
#  endif /* !__FreeBSD__ || (__FreeBSD__ && __FreeBSD__>=3) */
#  ifdef	M_PFIL
#   define	KMALLOC(a, b)	MALLOC((a), b, sizeof(*(a)), M_PFIL, M_NOWAIT)
#   define	KMALLOCS(a, b, c)	MALLOC((a), b, (c), M_PFIL, M_NOWAIT)
#   define	KFREE(x)	FREE((x), M_PFIL)
#   define	KFREES(x,s)	FREE((x), M_PFIL)
#  else
#   define	KMALLOC(a, b)	MALLOC((a), b, sizeof(*(a)), M_TEMP, M_NOWAIT)
#   define	KMALLOCS(a, b, c)	MALLOC((a), b, (c), M_TEMP, M_NOWAIT)
#   define	KFREE(x)	FREE((x), M_TEMP)
#   define	KFREES(x,s)	FREE((x), M_TEMP)
#  endif /* M_PFIL */
#  define	UIOMOVE(a,b,c,d)	uiomove(a,b,d)
#  define	SLEEP(id, n)	tsleep((id), PPAUSE|PCATCH, n, 0)
#  define	WAKEUP(id)	wakeup(id)
# endif /* BSD */
# if defined(NetBSD) && NetBSD <= 1991011 && NetBSD >= 199407
#  define	SPL_NET(x)	x = splsoftnet()
#  define	SPL_X(x)	(void) splx(x)
# else
#  if !SOLARIS && !defined(linux)
#   define	SPL_IMP(x)	x = splimp()
#   define	SPL_NET(x)	x = splnet()
#   define	SPL_X(x)	(void) splx(x)
#  endif
# endif /* NetBSD && NetBSD <= 1991011 && NetBSD >= 199407 */
# define	PANIC(x,y)	if (x) panic y
#else /* KERNEL */