ip_compat.h revision 338123
1/*
2 * Copyright (C) 2012 by Darren Reed.
3 *
4 * See the IPFILTER.LICENCE file for details on licencing.
5 *
6 * @(#)ip_compat.h	1.8 1/14/96
7 * $FreeBSD: stable/10/sys/contrib/ipfilter/netinet/ip_compat.h 338123 2018-08-21 00:37:48Z cy $
8 * Id: ip_compat.h,v 2.142.2.57 2007/10/10 09:51:42 darrenr Exp $
9 */
10
11#ifndef	__IP_COMPAT_H__
12#define	__IP_COMPAT_H__
13
14#ifndef	__P
15# ifdef	__STDC__
16#  define	__P(x)  x
17# else
18#  define	__P(x)  ()
19# endif
20#endif
21#ifndef	__STDC__
22# undef		const
23# define	const
24#endif
25
26#if defined(_KERNEL) || defined(KERNEL) || defined(__KERNEL__)
27# undef	KERNEL
28# undef	_KERNEL
29# undef 	__KERNEL__
30# define	KERNEL
31# define	_KERNEL
32# define 	__KERNEL__
33#endif
34
35#ifndef	SOLARIS
36# if defined(sun) && (defined(__svr4__) || defined(__SVR4))
37#  define	SOLARIS		1
38# else
39#  define	SOLARIS		0
40# endif
41#endif
42
43
44#if defined(__SVR4) || defined(__svr4__) || defined(__sgi)
45# define index   strchr
46# if !defined(_KERNEL)
47#  define	bzero(a,b)	memset(a,0,b)
48#  define	bcmp		memcmp
49#  define	bcopy(a,b,c)	memmove(b,a,c)
50# endif
51#endif
52
53#ifndef LIFNAMSIZ
54# ifdef IF_NAMESIZE
55#  define	LIFNAMSIZ	IF_NAMESIZE
56# else
57#  ifdef	IFNAMSIZ
58#   define	LIFNAMSIZ	IFNAMSIZ
59#  else
60#   define	LIFNAMSIZ	16
61#  endif
62# endif
63#endif
64
65#if defined(__sgi) || defined(bsdi) || defined(__hpux) || defined(hpux)
66struct  ether_addr {
67        u_char  ether_addr_octet[6];
68};
69#endif
70
71# ifdef __STDC__
72#  define IPL_EXTERN(ep) ipl##ep
73# else
74#  define IPL_EXTERN(ep) ipl/**/ep
75# endif
76
77/*
78 * This is a workaround for <sys/uio.h> troubles on FreeBSD and OpenBSD.
79 */
80# ifndef _KERNEL
81#  define ADD_KERNEL
82#  define _KERNEL
83#  define KERNEL
84# endif
85# include <sys/uio.h>
86# ifdef ADD_KERNEL
87#  undef _KERNEL
88#  undef KERNEL
89# endif
90
91#define	NETBSD_GE_REV(x)	(defined(__NetBSD_Version__) && \
92				 (__NetBSD_Version__ >= (x)))
93#define	NETBSD_GT_REV(x)	(defined(__NetBSD_Version__) && \
94				 (__NetBSD_Version__ > (x)))
95#define	NETBSD_LT_REV(x)	(defined(__NetBSD_Version__) && \
96				 (__NetBSD_Version__ < (x)))
97#define	FREEBSD_GE_REV(x)	(defined(__FreeBSD_version) && \
98				 (__FreeBSD_version >= (x)))
99#define	FREEBSD_GT_REV(x)	(defined(__FreeBSD_version) && \
100				 (__FreeBSD_version > (x)))
101#define	FREEBSD_LT_REV(x)	(defined(__FreeBSD_version) && \
102				 (__FreeBSD_version < (x)))
103#define	BSDOS_GE_REV(x)		(defined(_BSDI_VERSION) && \
104				 (_BSDI_VERSION >= (x)))
105#define	BSDOS_GT_REV(x)		(defined(_BSDI_VERSION) && \
106				 (_BSDI_VERSION > (x)))
107#define	BSDOS_LT_REV(x)		(defined(_BSDI_VERSION) && \
108				 (_BSDI_VERSION < (x)))
109#define	OPENBSD_GE_REV(x)	(defined(OpenBSD) && (OpenBSD >= (x)))
110#define	OPENBSD_GT_REV(x)	(defined(OpenBSD) && (OpenBSD > (x)))
111#define	OPENBSD_LT_REV(x)	(defined(OpenBSD) && (OpenBSD < (x)))
112#define	BSD_GE_YEAR(x)		(defined(BSD) && (BSD >= (x)))
113#define	BSD_GT_YEAR(x)		(defined(BSD) && (BSD > (x)))
114#define	BSD_LT_YEAR(x)		(defined(BSD) && (BSD < (x)))
115
116
117/* ----------------------------------------------------------------------- */
118/*                                F R E E B S D                            */
119/* ----------------------------------------------------------------------- */
120# define HAS_SYS_MD5_H	1
121# if defined(_KERNEL)
122#   include "opt_bpf.h"
123#   include "opt_inet6.h"
124#  if defined(INET6) && !defined(USE_INET6)
125#   define USE_INET6
126#  endif
127# else
128#  if !defined(USE_INET6) && !defined(NOINET6)
129#   define	USE_INET6
130#  endif
131# endif
132
133# if defined(_KERNEL)
134#  include <netinet/ip_var.h>
135#    define	p_cred	td_ucred
136#    define	p_uid	td_ucred->cr_ruid
137
138/*
139 * When #define'd, the 5.2.1 kernel panics when used with the ftp proxy.
140 * There may be other, safe, kernels but this is not extensively tested yet.
141 */
142#   define HAVE_M_PULLDOWN
143#  if !defined(IPFILTER_LKM) && (__FreeBSD_version >= 300000)
144#   include "opt_ipfilter.h"
145#  endif
146#  define	COPYIN(a,b,c)	copyin((caddr_t)(a), (caddr_t)(b), (c))
147#  define	COPYOUT(a,b,c)	copyout((caddr_t)(a), (caddr_t)(b), (c))
148
149#   define NETBSD_PF
150# else
151#  include <inttypes.h>
152# endif /* _KERNEL */
153
154#  include <sys/selinfo.h>
155#  include <sys/mutex.h>
156#    define	KRWLOCK_FILL_SZ		56
157#    define	KMUTEX_FILL_SZ		56
158#   include <sys/rwlock.h>
159#   define	KMUTEX_T		struct mtx
160#   define	KRWLOCK_T		struct rwlock
161#   ifdef _KERNEL
162#    define	READ_ENTER(x)		rw_rlock(&(x)->ipf_lk)
163#    define	WRITE_ENTER(x)		rw_wlock(&(x)->ipf_lk)
164#    define	MUTEX_DOWNGRADE(x)	rw_downgrade(&(x)->ipf_lk)
165#    define	MUTEX_TRY_UPGRADE(x)	rw_try_upgrade(&(x)->ipf_lk)
166#    define	RWLOCK_INIT(x,y)	rw_init(&(x)->ipf_lk, (y))
167#    define	RW_DESTROY(x)		rw_destroy(&(x)->ipf_lk)
168#    define	RWLOCK_EXIT(x)		do { \
169					    if (rw_wowned(&(x)->ipf_lk)) \
170					    	rw_wunlock(&(x)->ipf_lk); \
171					    else \
172						rw_runlock(&(x)->ipf_lk); \
173					} while (0)
174#   endif
175
176#  include <net/if_var.h>
177#  define	IFNAME(x)	((struct ifnet *)x)->if_xname
178#  define	COPYIFNAME(v, x, b) \
179				(void) strncpy(b, \
180					       ((struct ifnet *)x)->if_xname, \
181					       LIFNAMSIZ)
182
183# ifdef _KERNEL
184#  define	GETKTIME(x)	microtime((struct timeval *)x)
185
186#   include <netinet/in_systm.h>
187#   include <netinet/ip.h>
188#   include <machine/in_cksum.h>
189
190#   define	USE_MUTEXES
191#   define	MUTEX_ENTER(x)		mtx_lock(&(x)->ipf_lk)
192#   define	MUTEX_EXIT(x)		mtx_unlock(&(x)->ipf_lk)
193#   define	MUTEX_INIT(x,y)		mtx_init(&(x)->ipf_lk, (y), NULL,\
194						 MTX_DEF)
195#   define	MUTEX_DESTROY(x)	mtx_destroy(&(x)->ipf_lk)
196#   define	MUTEX_NUKE(x)		bzero((x), sizeof(*(x)))
197/*
198 * Whilst the sx(9) locks on FreeBSD have the right semantics and interface
199 * for what we want to use them for, despite testing showing they work -
200 * with a WITNESS kernel, it generates LOR messages.
201 */
202#   include <machine/atomic.h>
203#   define	ATOMIC_INC(x)		{ mtx_lock(&softc->ipf_rw.ipf_lk); (x)++; \
204					  mtx_unlock(&softc->ipf_rw.ipf_lk); }
205#   define	ATOMIC_DEC(x)		{ mtx_lock(&softc->ipf_rw.ipf_lk); (x)--; \
206					  mtx_unlock(&softc->ipf_rw.ipf_lk); }
207#   define	ATOMIC_INCL(x)		atomic_add_long(&(x), 1)
208#   define	ATOMIC_INC64(x)		ATOMIC_INC(x)
209#   define	ATOMIC_INC32(x)		atomic_add_32((u_int *)&(x), 1)
210#   define	ATOMIC_DECL(x)		atomic_add_long(&(x), -1)
211#   define	ATOMIC_DEC64(x)		ATOMIC_DEC(x)
212#   define	ATOMIC_DEC32(x)		atomic_add_32((u_int *)&(x), -1)
213#   define	SPL_X(x)	;
214#   define	SPL_NET(x)	;
215#   define	SPL_IMP(x)	;
216#   define	SPL_SCHED(x)	;
217#   define	GET_MINOR		dev2unit
218#  define	MSGDSIZE(m)	mbufchainlen(m)
219#  define	M_LEN(m)	(m)->m_len
220#  define	M_ADJ(m,x)	m_adj(m, x)
221#  define	M_COPY(x)	m_copy((x), 0, M_COPYALL)
222#  define	M_DUP(m)	m_dup(m, M_NOWAIT)
223#  define	IPF_PANIC(x,y)	if (x) { printf y; panic("ipf_panic"); }
224typedef struct mbuf mb_t;
225# endif /* _KERNEL */
226
227
228typedef	u_long		ioctlcmd_t;
229typedef	struct uio	uio_t;
230typedef	int		minor_t;
231typedef	u_int32_t	u_32_t;
232# define	U_32_T	1
233
234
235/* ----------------------------------------------------------------------- */
236/*                           G E N E R I C                                 */
237/* ----------------------------------------------------------------------- */
238
239/*
240 * For BSD kernels, if bpf is in the kernel, enable ipfilter to use bpf in
241 * filter rules.
242 */
243#if !defined(IPFILTER_BPF)
244# if (defined(NBPF) && (NBPF > 0)) || (defined(DEV_BPF) && (DEV_BPF > 0)) || \
245     (defined(NBPFILTER) && (NBPFILTER > 0))
246#  define	IPFILTER_BPF
247# endif
248#endif
249
250/*
251 * Userland locking primitives
252 */
253#ifndef _KERNEL
254#if !defined(KMUTEX_FILL_SZ)
255# define	KMUTEX_FILL_SZ	1
256#endif
257#if !defined(KRWLOCK_FILL_SZ)
258# define	KRWLOCK_FILL_SZ	1
259#endif
260#endif
261
262typedef	struct	{
263	char	*eMm_owner;
264	char	*eMm_heldin;
265	u_int	eMm_magic;
266	int	eMm_held;
267	int	eMm_heldat;
268} eMmutex_t;
269
270typedef	struct	{
271	char	*eMrw_owner;
272	char	*eMrw_heldin;
273	u_int	eMrw_magic;
274	short	eMrw_read;
275	short	eMrw_write;
276	int	eMrw_heldat;
277} eMrwlock_t;
278
279typedef union {
280	char	_fill[KMUTEX_FILL_SZ];
281#ifdef KMUTEX_T
282	struct	{
283		KMUTEX_T	ipf_slk;
284		const char	*ipf_lname;
285	} ipf_lkun_s;
286#endif
287	eMmutex_t	ipf_emu;
288} ipfmutex_t;
289
290typedef union {
291	char	_fill[KRWLOCK_FILL_SZ];
292#ifdef KRWLOCK_T
293	struct	{
294		KRWLOCK_T	ipf_slk;
295		const char	*ipf_lname;
296		int		ipf_sr;
297		int		ipf_sw;
298		u_int		ipf_magic;
299	} ipf_lkun_s;
300#endif
301	eMrwlock_t	ipf_emu;
302} ipfrwlock_t;
303
304#define	ipf_lk		ipf_lkun_s.ipf_slk
305#define	ipf_lname	ipf_lkun_s.ipf_lname
306#define	ipf_isr		ipf_lkun_s.ipf_sr
307#define	ipf_isw		ipf_lkun_s.ipf_sw
308#define	ipf_magic	ipf_lkun_s.ipf_magic
309
310#if !defined(__GNUC__) || \
311    (defined(__FreeBSD_version) && (__FreeBSD_version >= 503000))
312# ifndef	INLINE
313#  define	INLINE
314# endif
315#else
316# define	INLINE	__inline__
317#endif
318
319#if defined(__FreeBSD_version) && defined(_KERNEL)
320     CTASSERT(sizeof(ipfrwlock_t) == KRWLOCK_FILL_SZ);
321     CTASSERT(sizeof(ipfmutex_t) == KMUTEX_FILL_SZ);
322#endif
323
324
325/*
326 * In a non-kernel environment, there are a lot of macros that need to be
327 * filled in to be null-ops or to point to some compatibility function,
328 * somewhere in userland.
329 */
330#ifndef _KERNEL
331typedef	struct	mb_s	{
332	struct	mb_s	*mb_next;
333	char		*mb_data;
334	void		*mb_ifp;
335	int		mb_len;
336	int		mb_flags;
337	u_long		mb_buf[2048];
338} mb_t;
339# undef		m_next
340# define	m_next		mb_next
341# undef		m_len
342# define	m_len		mb_len
343# undef		m_flags
344# define	m_flags		mb_flags
345# undef		m_data
346# define	m_data		mb_data
347# undef		M_MCAST
348# define	M_MCAST		0x01
349# undef		M_BCAST
350# define	M_BCAST		0x02
351# undef		M_MBCAST
352# define	M_MBCAST	0x04
353# define	MSGDSIZE(m)	msgdsize(m)
354# define	M_LEN(m)	(m)->mb_len
355# define	M_ADJ(m,x)	(m)->mb_len += x
356# define	M_COPY(m)	dupmbt(m)
357# define	M_DUP(m)	dupmbt(m)
358# define	GETKTIME(x)	gettimeofday((struct timeval *)(x), NULL)
359# define	MTOD(m, t)	((t)(m)->mb_data)
360# define	FREE_MB_T(m)	freembt(m)
361# define	ALLOC_MB_T(m,l)	(m) = allocmbt(l)
362# define	PREP_MB_T(f, m)	do { \
363						(m)->mb_next = *(f)->fin_mp; \
364						*(fin)->fin_mp = (m); \
365						(f)->fin_m = (m); \
366					} while (0)
367# define	SLEEP(x,y)	1;
368# define	WAKEUP(x,y)	;
369# define	POLLWAKEUP(y)	;
370# define	IPF_PANIC(x,y)	;
371# define	PANIC(x,y)	;
372# define	SPL_SCHED(x)	;
373# define	SPL_NET(x)	;
374# define	SPL_IMP(x)	;
375# define	SPL_X(x)	;
376# define	KMALLOC(a,b)	(a) = (b)malloc(sizeof(*a))
377# define	KMALLOCS(a,b,c)	(a) = (b)malloc(c)
378# define	KFREE(x)	free(x)
379# define	KFREES(x,s)	free(x)
380# define	GETIFP(x, v)	get_unit(x,v)
381# define	GETIFMTU_4(x)	2048
382# define	GETIFMTU_6(x)	2048
383# define	COPYIN(a,b,c)	bcopywrap((a), (b), (c))
384# define	COPYOUT(a,b,c)	bcopywrap((a), (b), (c))
385# define	COPYDATA(m, o, l, b)	bcopy(MTOD((mb_t *)m, char *) + (o), \
386					      (b), (l))
387# define	COPYBACK(m, o, l, b)	bcopy((b), \
388					      MTOD((mb_t *)m, char *) + (o), \
389					      (l))
390# define	UIOMOVE(a,b,c,d)	ipfuiomove((caddr_t)a,b,c,d)
391extern	void	m_copydata __P((mb_t *, int, int, caddr_t));
392extern	int	ipfuiomove __P((caddr_t, int, int, struct uio *));
393extern	int	bcopywrap __P((void *, void *, size_t));
394extern	mb_t	*allocmbt __P((size_t));
395extern	mb_t	*dupmbt __P((mb_t *));
396extern	void	freembt __P((mb_t *));
397
398# define	MUTEX_DESTROY(x)	eMmutex_destroy(&(x)->ipf_emu, \
399							__FILE__, __LINE__)
400# define	MUTEX_ENTER(x)		eMmutex_enter(&(x)->ipf_emu, \
401						      __FILE__, __LINE__)
402# define	MUTEX_EXIT(x)		eMmutex_exit(&(x)->ipf_emu, \
403						     __FILE__, __LINE__)
404# define	MUTEX_INIT(x,y)		eMmutex_init(&(x)->ipf_emu, y, \
405						     __FILE__, __LINE__)
406# define	MUTEX_NUKE(x)		bzero((x), sizeof(*(x)))
407
408# define	MUTEX_DOWNGRADE(x)	eMrwlock_downgrade(&(x)->ipf_emu, \
409							   __FILE__, __LINE__)
410# define	MUTEX_TRY_UPGRADE(x)	eMrwlock_try_upgrade(&(x)->ipf_emu, \
411							   __FILE__, __LINE__)
412# define	READ_ENTER(x)		eMrwlock_read_enter(&(x)->ipf_emu, \
413							    __FILE__, __LINE__)
414# define	RWLOCK_INIT(x, y)	eMrwlock_init(&(x)->ipf_emu, y)
415# define	RWLOCK_EXIT(x)		eMrwlock_exit(&(x)->ipf_emu)
416# define	RW_DESTROY(x)		eMrwlock_destroy(&(x)->ipf_emu)
417# define	WRITE_ENTER(x)		eMrwlock_write_enter(&(x)->ipf_emu, \
418							     __FILE__, \
419							     __LINE__)
420
421# define	USE_MUTEXES		1
422
423extern void eMmutex_destroy __P((eMmutex_t *, char *, int));
424extern void eMmutex_enter __P((eMmutex_t *, char *, int));
425extern void eMmutex_exit __P((eMmutex_t *, char *, int));
426extern void eMmutex_init __P((eMmutex_t *, char *, char *, int));
427extern void eMrwlock_destroy __P((eMrwlock_t *));
428extern void eMrwlock_exit __P((eMrwlock_t *));
429extern void eMrwlock_init __P((eMrwlock_t *, char *));
430extern void eMrwlock_read_enter __P((eMrwlock_t *, char *, int));
431extern void eMrwlock_write_enter __P((eMrwlock_t *, char *, int));
432extern void eMrwlock_downgrade __P((eMrwlock_t *, char *, int));
433
434#endif
435
436extern	mb_t	*allocmbt(size_t);
437
438#define	MAX_IPV4HDR	((0xf << 2) + sizeof(struct icmp) + sizeof(ip_t) + 8)
439
440#ifndef	IP_OFFMASK
441# define	IP_OFFMASK	0x1fff
442#endif
443
444
445/*
446 * On BSD's use quad_t as a guarantee for getting at least a 64bit sized
447 * object.
448 */
449#if !defined(__amd64__) && BSD_GT_YEAR(199306)
450# define	USE_QUAD_T
451# define	U_QUAD_T	unsigned long long
452# define	QUAD_T		long long
453#else /* BSD > 199306 */
454# if !defined(U_QUAD_T)
455#  define	U_QUAD_T	u_long
456#  define	QUAD_T		long
457# endif
458#endif /* BSD > 199306 */
459
460
461#ifdef	USE_INET6
462# if defined(__NetBSD__) || defined(__OpenBSD__) || defined(__FreeBSD__) || \
463     defined(__osf__) || defined(linux)
464#  include <netinet/ip6.h>
465#  include <netinet/icmp6.h>
466#   if defined(_KERNEL) && !defined(__osf__)
467#    include <netinet6/ip6_var.h>
468#   endif
469typedef	struct ip6_hdr	ip6_t;
470# endif
471#endif
472
473#ifndef	MAX
474# define	MAX(a,b)	(((a) > (b)) ? (a) : (b))
475#endif
476
477#if defined(_KERNEL)
478# if defined(MENTAT) && !defined(INSTANCES)
479#  define	COPYDATA	mb_copydata
480#  define	COPYBACK	mb_copyback
481# else
482#  define	COPYDATA	m_copydata
483#  define	COPYBACK	m_copyback
484# endif
485#  if (defined(__NetBSD_Version__) && (__NetBSD_Version__ < 105180000)) || \
486       defined(__FreeBSD__) || (defined(OpenBSD) && (OpenBSD < 200206)) || \
487       defined(_BSDI_VERSION)
488#   include <vm/vm.h>
489#  endif
490#  if !defined(__FreeBSD__) || FREEBSD_GE_REV(300000)
491#   if NETBSD_GE_REV(105180000) || OPENBSD_GE_REV(200111)
492#    include <uvm/uvm_extern.h>
493#   else
494#    include <vm/vm_extern.h>
495extern  vm_map_t        kmem_map;
496#   endif
497#   include <sys/proc.h>
498#  else /* !__FreeBSD__ || (__FreeBSD__ && __FreeBSD_version >= 300000) */
499#   include <vm/vm_kern.h>
500#  endif /* !__FreeBSD__ || (__FreeBSD__ && __FreeBSD_version >= 300000) */
501
502#  ifdef IPFILTER_M_IPFILTER
503#    include <sys/malloc.h>
504MALLOC_DECLARE(M_IPFILTER);
505#    define	_M_IPF		M_IPFILTER
506#  else /* IPFILTER_M_IPFILTER */
507#   ifdef M_PFIL
508#    define	_M_IPF		M_PFIL
509#   else
510#    ifdef M_IPFILTER
511#     define	_M_IPF		M_IPFILTER
512#    else
513#     define	_M_IPF		M_TEMP
514#    endif /* M_IPFILTER */
515#   endif /* M_PFIL */
516#  endif /* IPFILTER_M_IPFILTER */
517#  if !defined(KMALLOC)
518#   define	KMALLOC(a, b)	MALLOC((a), b, sizeof(*(a)), _M_IPF, M_NOWAIT)
519#  endif
520#  if !defined(KMALLOCS)
521#   define	KMALLOCS(a, b, c)	MALLOC((a), b, (c), _M_IPF, M_NOWAIT)
522#  endif
523#  if !defined(KFREE)
524#   define	KFREE(x)	FREE((x), _M_IPF)
525#  endif
526#   if !defined(KFREES)
527#  define	KFREES(x,s)	FREE((x), _M_IPF)
528#  endif
529#  define	UIOMOVE(a,b,c,d)	uiomove((caddr_t)a,b,d)
530#  define	SLEEP(id, n)	tsleep((id), PPAUSE|PCATCH, n, 0)
531#  define	WAKEUP(id,x)	wakeup(id+x)
532#  if !defined(POLLWAKEUP)
533#   define	POLLWAKEUP(x)	selwakeup(softc->ipf_selwait+x)
534#  endif
535#  define	GETIFP(n, v)	ifunit(n)
536#  define	GETIFMTU_4(x)	((struct ifnet *)x)->if_mtu
537#  define	GETIFMTU_6(x)	((struct ifnet *)x)->if_mtu
538
539# if !defined(USE_MUTEXES) && !defined(SPL_NET)
540#  define	SPL_IMP(x)	x = splimp()
541#  define	SPL_NET(x)	x = splnet()
542#  if !defined(SPL_SCHED)
543#   define	SPL_SCHED(x)	x = splsched()
544#  endif
545#  define	SPL_X(x)	(void) splx(x)
546# endif /* !USE_MUTEXES */
547
548# ifndef FREE_MB_T
549#  define	FREE_MB_T(m)	m_freem(m)
550# endif
551# ifndef ALLOC_MB_T
552#  ifdef MGETHDR
553#   define	ALLOC_MB_T(m,l)	do { \
554					MGETHDR((m), M_DONTWAIT, MT_HEADER); \
555					if ((m) != NULL) { \
556						(m)->m_len = (l); \
557						(m)->m_pkthdr.len = (l); \
558					} \
559				} while (0)
560#  else
561#   define	ALLOC_MB_T(m,l)	do { \
562					MGET((m), M_DONTWAIT, MT_HEADER); \
563					if ((m) != NULL) { \
564						(m)->m_len = (l); \
565						(m)->m_pkthdr.len = (l); \
566					} \
567				} while (0)
568#  endif
569# endif
570# ifndef PREP_MB_T
571#  define	PREP_MB_T(f, m)	do { \
572						mb_t *_o = *(f)->fin_mp; \
573						(m)->m_next = _o; \
574						*(fin)->fin_mp = (m); \
575						if (_o->m_flags & M_PKTHDR) { \
576							(m)->m_pkthdr.len += \
577							    _o->m_pkthdr.len; \
578							(m)->m_pkthdr.rcvif = \
579							  _o->m_pkthdr.rcvif; \
580						} \
581					} while (0)
582# endif
583# ifndef M_DUP
584#  ifdef M_COPYALL
585#   define	M_DUP(m)	m_dup(m, 0, M_COPYALL, 0)
586#  else
587#   define	M_DUP(m)	m_dup(m)
588#  endif
589# endif
590
591# ifndef MTOD
592#  define	MTOD(m,t)	mtod(m,t)
593# endif
594
595# ifndef COPYIN
596#  define	COPYIN(a,b,c)	(bcopy((caddr_t)(a), (caddr_t)(b), (c)), 0)
597#  define	COPYOUT(a,b,c)	(bcopy((caddr_t)(a), (caddr_t)(b), (c)), 0)
598# endif
599
600# ifndef KMALLOC
601#  define	KMALLOC(a,b)	(a) = (b)new_kmem_alloc(sizeof(*(a)), \
602							KMEM_NOSLEEP)
603#  define	KMALLOCS(a,b,c)	(a) = (b)new_kmem_alloc((c), KMEM_NOSLEEP)
604# endif
605
606# ifndef	GET_MINOR
607#  define	GET_MINOR(x)	dev2unit(x)
608# endif
609# define	PANIC(x,y)	if (x) panic y
610#endif /* _KERNEL */
611
612#if !defined(IFNAME) && !defined(_KERNEL)
613# define	IFNAME(x)	get_ifname((struct ifnet *)x)
614#endif
615#ifndef	COPYIFNAME
616# define	NEED_FRGETIFNAME
617extern	char	*ipf_getifname __P((struct ifnet *, char *));
618# define	COPYIFNAME(v, x, b) \
619				ipf_getifname((struct ifnet *)x, b)
620#endif
621
622#ifndef ASSERT
623# ifdef _KERNEL
624#  define	ASSERT(x)
625# else
626#  define	ASSERT(x)	do { if (!(x)) abort(); } while (0)
627# endif
628#endif
629
630#ifndef BCOPYIN
631#  define	BCOPYIN(a,b,c)	(bcopy((caddr_t)(a), (caddr_t)(b), (c)), 0)
632#  define	BCOPYOUT(a,b,c)	(bcopy((caddr_t)(a), (caddr_t)(b), (c)), 0)
633#endif
634
635/*
636 * Because the ctype(3) posix definition, if used "safely" in code everywhere,
637 * would mean all normal code that walks through strings needed casts.  Yuck.
638 */
639#define	ISALNUM(x)	isalnum((u_char)(x))
640#define	ISALPHA(x)	isalpha((u_char)(x))
641#define	ISDIGIT(x)	isdigit((u_char)(x))
642#define	ISSPACE(x)	isspace((u_char)(x))
643#define	ISUPPER(x)	isupper((u_char)(x))
644#define	ISXDIGIT(x)	isxdigit((u_char)(x))
645#define	ISLOWER(x)	islower((u_char)(x))
646#define	TOUPPER(x)	toupper((u_char)(x))
647#define	TOLOWER(x)	tolower((u_char)(x))
648
649/*
650 * If mutexes aren't being used, turn all the mutex functions into null-ops.
651 */
652#if !defined(USE_MUTEXES)
653# define	USE_SPL			1
654# undef		RW_DESTROY
655# undef		MUTEX_INIT
656# undef		MUTEX_NUKE
657# undef		MUTEX_DESTROY
658# define	MUTEX_ENTER(x)		;
659# define	READ_ENTER(x)		;
660# define	WRITE_ENTER(x)		;
661# define	MUTEX_DOWNGRADE(x)	;
662# define	MUTEX_TRY_UPGRADE(x)	;
663# define	RWLOCK_INIT(x, y)	;
664# define	RWLOCK_EXIT(x)		;
665# define	RW_DESTROY(x)		;
666# define	MUTEX_EXIT(x)		;
667# define	MUTEX_INIT(x,y)		;
668# define	MUTEX_DESTROY(x)	;
669# define	MUTEX_NUKE(x)		;
670#endif /* !USE_MUTEXES */
671#ifndef	ATOMIC_INC
672# define	ATOMIC_INC(x)		(x)++
673# define	ATOMIC_DEC(x)		(x)--
674#endif
675
676#if defined(USE_SPL) && defined(_KERNEL)
677# define	SPL_INT(x)	int x
678#else
679# define	SPL_INT(x)
680#endif
681
682/*
683 * If there are no atomic operations for bit sizes defined, define them to all
684 * use a generic one that works for all sizes.
685 */
686#ifndef	ATOMIC_INCL
687# define	ATOMIC_INCL		ATOMIC_INC
688# define	ATOMIC_INC64		ATOMIC_INC
689# define	ATOMIC_INC32		ATOMIC_INC
690# define	ATOMIC_DECL		ATOMIC_DEC
691# define	ATOMIC_DEC64		ATOMIC_DEC
692# define	ATOMIC_DEC32		ATOMIC_DEC
693#endif
694
695#ifndef HDR_T_PRIVATE
696typedef	struct	tcphdr	tcphdr_t;
697typedef	struct	udphdr	udphdr_t;
698#endif
699typedef	struct	icmp	icmphdr_t;
700typedef	struct	ip	ip_t;
701typedef	struct	ether_header	ether_header_t;
702typedef	struct	tcpiphdr	tcpiphdr_t;
703
704#ifndef	FR_GROUPLEN
705# define	FR_GROUPLEN	16
706#endif
707
708#ifndef offsetof
709# define offsetof(t,m) (size_t)((&((t *)0L)->m))
710#endif
711#ifndef stsizeof
712# define stsizeof(t,m)	sizeof(((t *)0L)->m)
713#endif
714
715/*
716 * This set of macros has been brought about because on Tru64 it is not
717 * possible to easily assign or examine values in a structure that are
718 * bit fields.
719 */
720#ifndef IP_V
721# define	IP_V(x)		(x)->ip_v
722#endif
723#ifndef	IP_V_A
724# define	IP_V_A(x,y)	(x)->ip_v = (y)
725#endif
726#ifndef	IP_HL
727# define	IP_HL(x)	(x)->ip_hl
728#endif
729#ifndef	IP_HL_A
730# define	IP_HL_A(x,y)	(x)->ip_hl = ((y) & 0xf)
731#endif
732#ifndef	TCP_X2
733# define	TCP_X2(x)	(x)->th_x2
734#endif
735#ifndef	TCP_X2_A
736# define	TCP_X2_A(x,y)	(x)->th_x2 = (y)
737#endif
738#ifndef	TCP_OFF
739# define	TCP_OFF(x)	(x)->th_off
740#endif
741#ifndef	TCP_OFF_A
742# define	TCP_OFF_A(x,y)	(x)->th_off = (y)
743#endif
744#define	IPMINLEN(i, h)	((i)->ip_len >= (IP_HL(i) * 4 + sizeof(struct h)))
745
746
747/*
748 * XXX - This is one of those *awful* hacks which nobody likes
749 */
750#ifdef	ultrix
751#define	A_A
752#else
753#define	A_A	&
754#endif
755
756#define	TCPF_ALL	(TH_FIN|TH_SYN|TH_RST|TH_PUSH|TH_ACK|TH_URG|\
757			 TH_ECN|TH_CWR)
758
759#if BSD_GE_YEAR(199306) && !defined(m_act)
760# define	m_act	m_nextpkt
761#endif
762
763/*
764 * Security Options for Intenet Protocol (IPSO) as defined in RFC 1108.
765 *
766 * Basic Option
767 *
768 * 00000001   -   (Reserved 4)
769 * 00111101   -   Top Secret
770 * 01011010   -   Secret
771 * 10010110   -   Confidential
772 * 01100110   -   (Reserved 3)
773 * 11001100   -   (Reserved 2)
774 * 10101011   -   Unclassified
775 * 11110001   -   (Reserved 1)
776 */
777#define	IPSO_CLASS_RES4		0x01
778#define	IPSO_CLASS_TOPS		0x3d
779#define	IPSO_CLASS_SECR		0x5a
780#define	IPSO_CLASS_CONF		0x96
781#define	IPSO_CLASS_RES3		0x66
782#define	IPSO_CLASS_RES2		0xcc
783#define	IPSO_CLASS_UNCL		0xab
784#define	IPSO_CLASS_RES1		0xf1
785
786#define	IPSO_AUTH_GENSER	0x80
787#define	IPSO_AUTH_ESI		0x40
788#define	IPSO_AUTH_SCI		0x20
789#define	IPSO_AUTH_NSA		0x10
790#define	IPSO_AUTH_DOE		0x08
791#define	IPSO_AUTH_UN		0x06
792#define	IPSO_AUTH_FTE		0x01
793
794/*
795 * IP option #defines
796 */
797#undef	IPOPT_RR
798#define	IPOPT_RR	7
799#undef	IPOPT_ZSU
800#define	IPOPT_ZSU	10	/* ZSU */
801#undef	IPOPT_MTUP
802#define	IPOPT_MTUP	11	/* MTUP */
803#undef	IPOPT_MTUR
804#define	IPOPT_MTUR	12	/* MTUR */
805#undef	IPOPT_ENCODE
806#define	IPOPT_ENCODE	15	/* ENCODE */
807#undef	IPOPT_TS
808#define	IPOPT_TS	68
809#undef	IPOPT_TR
810#define	IPOPT_TR	82	/* TR */
811#undef	IPOPT_SECURITY
812#define	IPOPT_SECURITY	130
813#undef	IPOPT_LSRR
814#define	IPOPT_LSRR	131
815#undef	IPOPT_E_SEC
816#define	IPOPT_E_SEC	133	/* E-SEC */
817#undef	IPOPT_CIPSO
818#define	IPOPT_CIPSO	134	/* CIPSO */
819#undef	IPOPT_SATID
820#define	IPOPT_SATID	136
821#ifndef	IPOPT_SID
822# define	IPOPT_SID	IPOPT_SATID
823#endif
824#undef	IPOPT_SSRR
825#define	IPOPT_SSRR	137
826#undef	IPOPT_ADDEXT
827#define	IPOPT_ADDEXT	147	/* ADDEXT */
828#undef	IPOPT_VISA
829#define	IPOPT_VISA	142	/* VISA */
830#undef	IPOPT_IMITD
831#define	IPOPT_IMITD	144	/* IMITD */
832#undef	IPOPT_EIP
833#define	IPOPT_EIP	145	/* EIP */
834#undef	IPOPT_RTRALRT
835#define	IPOPT_RTRALRT	148	/* RTRALRT */
836#undef	IPOPT_SDB
837#define	IPOPT_SDB	149
838#undef	IPOPT_NSAPA
839#define	IPOPT_NSAPA	150
840#undef	IPOPT_DPS
841#define	IPOPT_DPS	151
842#undef	IPOPT_UMP
843#define	IPOPT_UMP	152
844#undef	IPOPT_FINN
845#define	IPOPT_FINN	205	/* FINN */
846#undef	IPOPT_AH
847#define	IPOPT_AH	256+IPPROTO_AH
848
849#ifndef TCPOPT_EOL
850# define TCPOPT_EOL		0
851#endif
852#ifndef TCPOPT_NOP
853# define TCPOPT_NOP		1
854#endif
855#ifndef TCPOPT_MAXSEG
856# define TCPOPT_MAXSEG		2
857#endif
858#ifndef TCPOLEN_MAXSEG
859# define TCPOLEN_MAXSEG		4
860#endif
861#ifndef TCPOPT_WINDOW
862# define TCPOPT_WINDOW		3
863#endif
864#ifndef TCPOLEN_WINDOW
865# define TCPOLEN_WINDOW		3
866#endif
867#ifndef TCPOPT_SACK_PERMITTED
868# define TCPOPT_SACK_PERMITTED	4
869#endif
870#ifndef TCPOLEN_SACK_PERMITTED
871# define TCPOLEN_SACK_PERMITTED	2
872#endif
873#ifndef TCPOPT_SACK
874# define TCPOPT_SACK		5
875#endif
876#ifndef TCPOPT_TIMESTAMP
877# define TCPOPT_TIMESTAMP	8
878#endif
879
880#ifndef	ICMP_MINLEN
881# define	ICMP_MINLEN	8
882#endif
883#ifndef	ICMP_ECHOREPLY
884# define	ICMP_ECHOREPLY	0
885#endif
886#ifndef	ICMP_UNREACH
887# define	ICMP_UNREACH	3
888#endif
889#ifndef	ICMP_UNREACH_NET
890# define	ICMP_UNREACH_NET	0
891#endif
892#ifndef	ICMP_UNREACH_HOST
893# define	ICMP_UNREACH_HOST	1
894#endif
895#ifndef	ICMP_UNREACH_PROTOCOL
896# define	ICMP_UNREACH_PROTOCOL	2
897#endif
898#ifndef	ICMP_UNREACH_PORT
899# define	ICMP_UNREACH_PORT	3
900#endif
901#ifndef	ICMP_UNREACH_NEEDFRAG
902# define	ICMP_UNREACH_NEEDFRAG	4
903#endif
904#ifndef	ICMP_UNREACH_SRCFAIL
905# define	ICMP_UNREACH_SRCFAIL	5
906#endif
907#ifndef	ICMP_UNREACH_NET_UNKNOWN
908# define	ICMP_UNREACH_NET_UNKNOWN	6
909#endif
910#ifndef	ICMP_UNREACH_HOST_UNKNOWN
911# define	ICMP_UNREACH_HOST_UNKNOWN	7
912#endif
913#ifndef	ICMP_UNREACH_ISOLATED
914# define	ICMP_UNREACH_ISOLATED	8
915#endif
916#ifndef	ICMP_UNREACH_NET_PROHIB
917# define	ICMP_UNREACH_NET_PROHIB	9
918#endif
919#ifndef	ICMP_UNREACH_HOST_PROHIB
920# define	ICMP_UNREACH_HOST_PROHIB	10
921#endif
922#ifndef	ICMP_UNREACH_TOSNET
923# define	ICMP_UNREACH_TOSNET	11
924#endif
925#ifndef	ICMP_UNREACH_TOSHOST
926# define	ICMP_UNREACH_TOSHOST	12
927#endif
928#ifndef	ICMP_UNREACH_ADMIN_PROHIBIT
929# define	ICMP_UNREACH_ADMIN_PROHIBIT	13
930#endif
931#ifndef	ICMP_UNREACH_FILTER
932# define	ICMP_UNREACH_FILTER	13
933#endif
934#ifndef	ICMP_UNREACH_HOST_PRECEDENCE
935# define	ICMP_UNREACH_HOST_PRECEDENCE	14
936#endif
937#ifndef	ICMP_UNREACH_PRECEDENCE_CUTOFF
938# define	ICMP_UNREACH_PRECEDENCE_CUTOFF	15
939#endif
940#ifndef	ICMP_SOURCEQUENCH
941# define	ICMP_SOURCEQUENCH	4
942#endif
943#ifndef	ICMP_REDIRECT_NET
944# define	ICMP_REDIRECT_NET	0
945#endif
946#ifndef	ICMP_REDIRECT_HOST
947# define	ICMP_REDIRECT_HOST	1
948#endif
949#ifndef	ICMP_REDIRECT_TOSNET
950# define	ICMP_REDIRECT_TOSNET	2
951#endif
952#ifndef	ICMP_REDIRECT_TOSHOST
953# define	ICMP_REDIRECT_TOSHOST	3
954#endif
955#ifndef	ICMP_ALTHOSTADDR
956# define	ICMP_ALTHOSTADDR	6
957#endif
958#ifndef	ICMP_TIMXCEED
959# define	ICMP_TIMXCEED	11
960#endif
961#ifndef	ICMP_TIMXCEED_INTRANS
962# define	ICMP_TIMXCEED_INTRANS	0
963#endif
964#ifndef	ICMP_TIMXCEED_REASS
965# define		ICMP_TIMXCEED_REASS	1
966#endif
967#ifndef	ICMP_PARAMPROB
968# define	ICMP_PARAMPROB	12
969#endif
970#ifndef	ICMP_PARAMPROB_ERRATPTR
971# define	ICMP_PARAMPROB_ERRATPTR	0
972#endif
973#ifndef	ICMP_PARAMPROB_OPTABSENT
974# define	ICMP_PARAMPROB_OPTABSENT	1
975#endif
976#ifndef	ICMP_PARAMPROB_LENGTH
977# define	ICMP_PARAMPROB_LENGTH	2
978#endif
979#ifndef ICMP_TSTAMP
980# define	ICMP_TSTAMP	13
981#endif
982#ifndef ICMP_TSTAMPREPLY
983# define	ICMP_TSTAMPREPLY	14
984#endif
985#ifndef ICMP_IREQ
986# define	ICMP_IREQ	15
987#endif
988#ifndef ICMP_IREQREPLY
989# define	ICMP_IREQREPLY	16
990#endif
991#ifndef	ICMP_MASKREQ
992# define	ICMP_MASKREQ	17
993#endif
994#ifndef ICMP_MASKREPLY
995# define	ICMP_MASKREPLY	18
996#endif
997#ifndef	ICMP_TRACEROUTE
998# define	ICMP_TRACEROUTE	30
999#endif
1000#ifndef	ICMP_DATACONVERR
1001# define	ICMP_DATACONVERR	31
1002#endif
1003#ifndef	ICMP_MOBILE_REDIRECT
1004# define	ICMP_MOBILE_REDIRECT	32
1005#endif
1006#ifndef	ICMP_IPV6_WHEREAREYOU
1007# define	ICMP_IPV6_WHEREAREYOU	33
1008#endif
1009#ifndef	ICMP_IPV6_IAMHERE
1010# define	ICMP_IPV6_IAMHERE	34
1011#endif
1012#ifndef	ICMP_MOBILE_REGREQUEST
1013# define	ICMP_MOBILE_REGREQUEST	35
1014#endif
1015#ifndef	ICMP_MOBILE_REGREPLY
1016# define	ICMP_MOBILE_REGREPLY	36
1017#endif
1018#ifndef	ICMP_SKIP
1019# define	ICMP_SKIP	39
1020#endif
1021#ifndef	ICMP_PHOTURIS
1022# define	ICMP_PHOTURIS	40
1023#endif
1024#ifndef	ICMP_PHOTURIS_UNKNOWN_INDEX
1025# define	ICMP_PHOTURIS_UNKNOWN_INDEX	1
1026#endif
1027#ifndef	ICMP_PHOTURIS_AUTH_FAILED
1028# define	ICMP_PHOTURIS_AUTH_FAILED	2
1029#endif
1030#ifndef	ICMP_PHOTURIS_DECRYPT_FAILED
1031# define	ICMP_PHOTURIS_DECRYPT_FAILED	3
1032#endif
1033#ifndef	IPVERSION
1034# define	IPVERSION	4
1035#endif
1036#ifndef	IPOPT_MINOFF
1037# define	IPOPT_MINOFF	4
1038#endif
1039#ifndef	IPOPT_COPIED
1040# define	IPOPT_COPIED(x)	((x)&0x80)
1041#endif
1042#ifndef	IPOPT_EOL
1043# define	IPOPT_EOL	0
1044#endif
1045#ifndef	IPOPT_NOP
1046# define	IPOPT_NOP	1
1047#endif
1048#ifndef	IP_MF
1049# define	IP_MF	((u_short)0x2000)
1050#endif
1051#ifndef	ETHERTYPE_IP
1052# define	ETHERTYPE_IP	((u_short)0x0800)
1053#endif
1054#ifndef	TH_FIN
1055# define	TH_FIN	0x01
1056#endif
1057#ifndef	TH_SYN
1058# define	TH_SYN	0x02
1059#endif
1060#ifndef	TH_RST
1061# define	TH_RST	0x04
1062#endif
1063#ifndef	TH_PUSH
1064# define	TH_PUSH	0x08
1065#endif
1066#ifndef	TH_ACK
1067# define	TH_ACK	0x10
1068#endif
1069#ifndef	TH_URG
1070# define	TH_URG	0x20
1071#endif
1072#undef	TH_ACKMASK
1073#define	TH_ACKMASK	(TH_FIN|TH_SYN|TH_RST|TH_ACK)
1074
1075#ifndef	IPOPT_EOL
1076# define	IPOPT_EOL	0
1077#endif
1078#ifndef	IPOPT_NOP
1079# define	IPOPT_NOP	1
1080#endif
1081#ifndef	IPOPT_RR
1082# define	IPOPT_RR	7
1083#endif
1084#ifndef	IPOPT_TS
1085# define	IPOPT_TS	68
1086#endif
1087#ifndef	IPOPT_SECURITY
1088# define	IPOPT_SECURITY	130
1089#endif
1090#ifndef	IPOPT_LSRR
1091# define	IPOPT_LSRR	131
1092#endif
1093#ifndef	IPOPT_SATID
1094# define	IPOPT_SATID	136
1095#endif
1096#ifndef	IPOPT_SSRR
1097# define	IPOPT_SSRR	137
1098#endif
1099#ifndef	IPOPT_SECUR_UNCLASS
1100# define	IPOPT_SECUR_UNCLASS	((u_short)0x0000)
1101#endif
1102#ifndef	IPOPT_SECUR_CONFID
1103# define	IPOPT_SECUR_CONFID	((u_short)0xf135)
1104#endif
1105#ifndef	IPOPT_SECUR_EFTO
1106# define	IPOPT_SECUR_EFTO	((u_short)0x789a)
1107#endif
1108#ifndef	IPOPT_SECUR_MMMM
1109# define	IPOPT_SECUR_MMMM	((u_short)0xbc4d)
1110#endif
1111#ifndef	IPOPT_SECUR_RESTR
1112# define	IPOPT_SECUR_RESTR	((u_short)0xaf13)
1113#endif
1114#ifndef	IPOPT_SECUR_SECRET
1115# define	IPOPT_SECUR_SECRET	((u_short)0xd788)
1116#endif
1117#ifndef IPOPT_SECUR_TOPSECRET
1118# define	IPOPT_SECUR_TOPSECRET	((u_short)0x6bc5)
1119#endif
1120#ifndef IPOPT_OLEN
1121# define	IPOPT_OLEN	1
1122#endif
1123#ifndef	IPPROTO_HOPOPTS
1124# define	IPPROTO_HOPOPTS	0
1125#endif
1126#ifndef	IPPROTO_IPIP
1127# define	IPPROTO_IPIP	4
1128#endif
1129#ifndef	IPPROTO_ENCAP
1130# define	IPPROTO_ENCAP	98
1131#endif
1132#ifndef	IPPROTO_IPV6
1133# define	IPPROTO_IPV6	41
1134#endif
1135#ifndef	IPPROTO_ROUTING
1136# define	IPPROTO_ROUTING	43
1137#endif
1138#ifndef	IPPROTO_FRAGMENT
1139# define	IPPROTO_FRAGMENT	44
1140#endif
1141#ifndef	IPPROTO_GRE
1142# define	IPPROTO_GRE	47	/* GRE encaps RFC 1701 */
1143#endif
1144#ifndef	IPPROTO_ESP
1145# define	IPPROTO_ESP	50
1146#endif
1147#ifndef	IPPROTO_AH
1148# define	IPPROTO_AH	51
1149#endif
1150#ifndef	IPPROTO_ICMPV6
1151# define	IPPROTO_ICMPV6	58
1152#endif
1153#ifndef	IPPROTO_NONE
1154# define	IPPROTO_NONE	59
1155#endif
1156#ifndef	IPPROTO_DSTOPTS
1157# define	IPPROTO_DSTOPTS	60
1158#endif
1159#ifndef	IPPROTO_MOBILITY
1160# define	IPPROTO_MOBILITY	135
1161#endif
1162
1163#ifndef	ICMP_ROUTERADVERT
1164# define	ICMP_ROUTERADVERT	9
1165#endif
1166#ifndef	ICMP_ROUTERSOLICIT
1167# define	ICMP_ROUTERSOLICIT	10
1168#endif
1169#ifndef	ICMP6_DST_UNREACH
1170# define	ICMP6_DST_UNREACH	1
1171#endif
1172#ifndef	ICMP6_PACKET_TOO_BIG
1173# define	ICMP6_PACKET_TOO_BIG	2
1174#endif
1175#ifndef	ICMP6_TIME_EXCEEDED
1176# define	ICMP6_TIME_EXCEEDED	3
1177#endif
1178#ifndef	ICMP6_PARAM_PROB
1179# define	ICMP6_PARAM_PROB	4
1180#endif
1181
1182#ifndef	ICMP6_ECHO_REQUEST
1183# define	ICMP6_ECHO_REQUEST	128
1184#endif
1185#ifndef	ICMP6_ECHO_REPLY
1186# define	ICMP6_ECHO_REPLY	129
1187#endif
1188#ifndef	ICMP6_MEMBERSHIP_QUERY
1189# define	ICMP6_MEMBERSHIP_QUERY	130
1190#endif
1191#ifndef	MLD6_LISTENER_QUERY
1192# define	MLD6_LISTENER_QUERY	130
1193#endif
1194#ifndef	ICMP6_MEMBERSHIP_REPORT
1195# define	ICMP6_MEMBERSHIP_REPORT	131
1196#endif
1197#ifndef	MLD6_LISTENER_REPORT
1198# define	MLD6_LISTENER_REPORT	131
1199#endif
1200#ifndef	ICMP6_MEMBERSHIP_REDUCTION
1201# define	ICMP6_MEMBERSHIP_REDUCTION	132
1202#endif
1203#ifndef	MLD6_LISTENER_DONE
1204# define	MLD6_LISTENER_DONE	132
1205#endif
1206#ifndef	ND_ROUTER_SOLICIT
1207# define	ND_ROUTER_SOLICIT	133
1208#endif
1209#ifndef	ND_ROUTER_ADVERT
1210# define	ND_ROUTER_ADVERT	134
1211#endif
1212#ifndef	ND_NEIGHBOR_SOLICIT
1213# define	ND_NEIGHBOR_SOLICIT	135
1214#endif
1215#ifndef	ND_NEIGHBOR_ADVERT
1216# define	ND_NEIGHBOR_ADVERT	136
1217#endif
1218#ifndef	ND_REDIRECT
1219# define	ND_REDIRECT	137
1220#endif
1221#ifndef	ICMP6_ROUTER_RENUMBERING
1222# define	ICMP6_ROUTER_RENUMBERING	138
1223#endif
1224#ifndef	ICMP6_WRUREQUEST
1225# define	ICMP6_WRUREQUEST	139
1226#endif
1227#ifndef	ICMP6_WRUREPLY
1228# define	ICMP6_WRUREPLY		140
1229#endif
1230#ifndef	ICMP6_FQDN_QUERY
1231# define	ICMP6_FQDN_QUERY	139
1232#endif
1233#ifndef	ICMP6_FQDN_REPLY
1234# define	ICMP6_FQDN_REPLY	140
1235#endif
1236#ifndef	ICMP6_NI_QUERY
1237# define	ICMP6_NI_QUERY		139
1238#endif
1239#ifndef	ICMP6_NI_REPLY
1240# define	ICMP6_NI_REPLY		140
1241#endif
1242#ifndef	MLD6_MTRACE_RESP
1243# define	MLD6_MTRACE_RESP	200
1244#endif
1245#ifndef	MLD6_MTRACE
1246# define	MLD6_MTRACE		201
1247#endif
1248#ifndef	ICMP6_HADISCOV_REQUEST
1249# define	ICMP6_HADISCOV_REQUEST	202
1250#endif
1251#ifndef	ICMP6_HADISCOV_REPLY
1252# define	ICMP6_HADISCOV_REPLY	203
1253#endif
1254#ifndef	ICMP6_MOBILEPREFIX_SOLICIT
1255# define	ICMP6_MOBILEPREFIX_SOLICIT	204
1256#endif
1257#ifndef	ICMP6_MOBILEPREFIX_ADVERT
1258# define	ICMP6_MOBILEPREFIX_ADVERT	205
1259#endif
1260#ifndef	ICMP6_MAXTYPE
1261# define	ICMP6_MAXTYPE		205
1262#endif
1263
1264#ifndef	ICMP6_DST_UNREACH_NOROUTE
1265# define	ICMP6_DST_UNREACH_NOROUTE	0
1266#endif
1267#ifndef	ICMP6_DST_UNREACH_ADMIN
1268# define	ICMP6_DST_UNREACH_ADMIN		1
1269#endif
1270#ifndef	ICMP6_DST_UNREACH_NOTNEIGHBOR
1271# define	ICMP6_DST_UNREACH_NOTNEIGHBOR	2
1272#endif
1273#ifndef	ICMP6_DST_UNREACH_BEYONDSCOPE
1274# define	ICMP6_DST_UNREACH_BEYONDSCOPE	2
1275#endif
1276#ifndef	ICMP6_DST_UNREACH_ADDR
1277# define	ICMP6_DST_UNREACH_ADDR		3
1278#endif
1279#ifndef	ICMP6_DST_UNREACH_NOPORT
1280# define	ICMP6_DST_UNREACH_NOPORT	4
1281#endif
1282#ifndef	ICMP6_TIME_EXCEED_TRANSIT
1283# define	ICMP6_TIME_EXCEED_TRANSIT	0
1284#endif
1285#ifndef	ICMP6_TIME_EXCEED_REASSEMBLY
1286# define	ICMP6_TIME_EXCEED_REASSEMBLY	1
1287#endif
1288
1289#ifndef	ICMP6_NI_SUCCESS
1290# define	ICMP6_NI_SUCCESS	0
1291#endif
1292#ifndef	ICMP6_NI_REFUSED
1293# define	ICMP6_NI_REFUSED	1
1294#endif
1295#ifndef	ICMP6_NI_UNKNOWN
1296# define	ICMP6_NI_UNKNOWN	2
1297#endif
1298
1299#ifndef	ICMP6_ROUTER_RENUMBERING_COMMAND
1300# define	ICMP6_ROUTER_RENUMBERING_COMMAND	0
1301#endif
1302#ifndef	ICMP6_ROUTER_RENUMBERING_RESULT
1303# define	ICMP6_ROUTER_RENUMBERING_RESULT	1
1304#endif
1305#ifndef	ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET
1306# define	ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET	255
1307#endif
1308
1309#ifndef	ICMP6_PARAMPROB_HEADER
1310# define	ICMP6_PARAMPROB_HEADER	0
1311#endif
1312#ifndef	ICMP6_PARAMPROB_NEXTHEADER
1313# define	ICMP6_PARAMPROB_NEXTHEADER	1
1314#endif
1315#ifndef	ICMP6_PARAMPROB_OPTION
1316# define	ICMP6_PARAMPROB_OPTION	2
1317#endif
1318
1319#ifndef	ICMP6_NI_SUBJ_IPV6
1320# define	ICMP6_NI_SUBJ_IPV6	0
1321#endif
1322#ifndef	ICMP6_NI_SUBJ_FQDN
1323# define	ICMP6_NI_SUBJ_FQDN	1
1324#endif
1325#ifndef	ICMP6_NI_SUBJ_IPV4
1326# define	ICMP6_NI_SUBJ_IPV4	2
1327#endif
1328
1329#ifndef	MLD_MTRACE_RESP
1330# define	MLD_MTRACE_RESP		200
1331#endif
1332#ifndef	MLD_MTRACE
1333# define	MLD_MTRACE		201
1334#endif
1335#ifndef	MLD6_MTRACE_RESP
1336# define	MLD6_MTRACE_RESP	MLD_MTRACE_RESP
1337#endif
1338#ifndef	MLD6_MTRACE
1339# define	MLD6_MTRACE		MLD_MTRACE
1340#endif
1341
1342#if !defined(IPV6_FLOWINFO_MASK)
1343# if (BYTE_ORDER == BIG_ENDIAN) || defined(_BIG_ENDIAN)
1344#  define IPV6_FLOWINFO_MASK	0x0fffffff	/* flow info (28 bits) */
1345# else
1346#  if(BYTE_ORDER == LITTLE_ENDIAN) || !defined(_BIG_ENDIAN)
1347#   define IPV6_FLOWINFO_MASK	0xffffff0f	/* flow info (28 bits) */
1348#  endif /* LITTLE_ENDIAN */
1349# endif
1350#endif
1351#if !defined(IPV6_FLOWLABEL_MASK)
1352# if (BYTE_ORDER == BIG_ENDIAN) || defined(_BIG_ENDIAN)
1353#  define IPV6_FLOWLABEL_MASK	0x000fffff	/* flow label (20 bits) */
1354# else
1355#  if (BYTE_ORDER == LITTLE_ENDIAN) || !defined(_BIG_ENDIAN)
1356#   define IPV6_FLOWLABEL_MASK	0xffff0f00	/* flow label (20 bits) */
1357#  endif /* LITTLE_ENDIAN */
1358# endif
1359#endif
1360
1361/*
1362 * ECN is a new addition to TCP - RFC 2481
1363 */
1364#ifndef TH_ECN
1365# define	TH_ECN	0x40
1366#endif
1367#ifndef TH_CWR
1368# define	TH_CWR	0x80
1369#endif
1370#define	TH_ECNALL	(TH_ECN|TH_CWR)
1371
1372/*
1373 * TCP States
1374 */
1375#define IPF_TCPS_LISTEN		0	/* listening for connection */
1376#define IPF_TCPS_SYN_SENT	1	/* active, have sent syn */
1377#define IPF_TCPS_SYN_RECEIVED	2	/* have send and received syn */
1378#define IPF_TCPS_HALF_ESTAB	3	/* for connections not fully "up" */
1379/* states < IPF_TCPS_ESTABLISHED are those where connections not established */
1380#define IPF_TCPS_ESTABLISHED	4	/* established */
1381#define IPF_TCPS_CLOSE_WAIT	5	/* rcvd fin, waiting for close */
1382/* states > IPF_TCPS_CLOSE_WAIT are those where user has closed */
1383#define IPF_TCPS_FIN_WAIT_1	6	/* have closed, sent fin */
1384#define IPF_TCPS_CLOSING	7	/* closed xchd FIN; await FIN ACK */
1385#define IPF_TCPS_LAST_ACK	8	/* had fin and close; await FIN ACK */
1386/* states > IPF_TCPS_CLOSE_WAIT && < IPF_TCPS_FIN_WAIT_2 await ACK of FIN */
1387#define IPF_TCPS_FIN_WAIT_2	9	/* have closed, fin is acked */
1388#define IPF_TCPS_TIME_WAIT	10	/* in 2*msl quiet wait after close */
1389#define IPF_TCPS_CLOSED		11	/* closed */
1390#define IPF_TCP_NSTATES		12
1391
1392#define	TCP_MSL			120
1393
1394#undef	ICMP_MAX_UNREACH
1395#define	ICMP_MAX_UNREACH	14
1396#undef	ICMP_MAXTYPE
1397#define	ICMP_MAXTYPE		18
1398
1399#ifndef	IFNAMSIZ
1400#define	IFNAMSIZ		16
1401#endif
1402
1403#ifndef	LOG_FTP
1404# define	LOG_FTP		(11<<3)
1405#endif
1406#ifndef	LOG_AUTHPRIV
1407# define	LOG_AUTHPRIV	(10<<3)
1408#endif
1409#ifndef	LOG_AUDIT
1410# define	LOG_AUDIT	(13<<3)
1411#endif
1412#ifndef	LOG_NTP
1413# define	LOG_NTP		(12<<3)
1414#endif
1415#ifndef	LOG_SECURITY
1416# define	LOG_SECURITY	(13<<3)
1417#endif
1418#ifndef	LOG_LFMT
1419# define	LOG_LFMT	(14<<3)
1420#endif
1421#ifndef	LOG_CONSOLE
1422# define	LOG_CONSOLE	(14<<3)
1423#endif
1424
1425/*
1426 * ICMP error replies have an IP header (20 bytes), 8 bytes of ICMP data,
1427 * another IP header and then 64 bits of data, totalling 56.  Of course,
1428 * the last 64 bits is dependent on that being available.
1429 */
1430#define	ICMPERR_ICMPHLEN	8
1431#define	ICMPERR_IPICMPHLEN	(20 + 8)
1432#define	ICMPERR_MINPKTLEN	(20 + 8 + 20)
1433#define	ICMPERR_MAXPKTLEN	(20 + 8 + 20 + 8)
1434#define ICMP6ERR_MINPKTLEN	(40 + 8)
1435#define ICMP6ERR_IPICMPHLEN	(40 + 8 + 40)
1436
1437#ifndef MIN
1438# define	MIN(a,b)	(((a)<(b))?(a):(b))
1439#endif
1440
1441#ifdef RESCUE
1442# undef IPFILTER_BPF
1443#endif
1444
1445#ifdef IPF_DEBUG
1446# define	DPRINT(x)	printf x
1447#else
1448# define	DPRINT(x)
1449#endif
1450
1451#ifdef DTRACE_PROBE
1452# ifdef _KERNEL
1453#  define	DT(_n)			DTRACE_PROBE(_n)
1454#  define	DT1(_n,_a,_b)		DTRACE_PROBE1(_n,_a,_b)
1455#  define	DT2(_n,_a,_b,_c,_d)	DTRACE_PROBE2(_n,_a,_b,_c,_d)
1456#  define	DT3(_n,_a,_b,_c,_d,_e,_f)	\
1457					DTRACE_PROBE3(_n,_a,_b,_c,_d,_e,_f)
1458#  define	DT4(_n,_a,_b,_c,_d,_e,_f,_g,_h) \
1459				DTRACE_PROBE4(_n,_a,_b,_c,_d,_e,_f,_g,_h)
1460# else
1461#  define	DT(_n)
1462#  define	DT1(_n,_a,_b)
1463#  define	DT2(_n,_a,_b,_c,_d)
1464#  define	DT3(_n,_a,_b,_c,_d,_e,_f)
1465#  define	DT4(_n,_a,_b,_c,_d,_e,_f,_g,_h)
1466# endif
1467#else
1468# define	DT(_n)
1469# define	DT1(_n,_a,_b)
1470# define	DT2(_n,_a,_b,_c,_d)
1471# define	DT3(_n,_a,_b,_c,_d,_e,_f)
1472# define	DT4(_n,_a,_b,_c,_d,_e,_f,_g,_h)
1473#endif
1474
1475struct ip6_routing {
1476	u_char	ip6r_nxt;	/* next header */
1477	u_char	ip6r_len;	/* length in units of 8 octets */
1478	u_char	ip6r_type;	/* always zero */
1479	u_char	ip6r_segleft;	/* segments left */
1480	u_32_t	ip6r_reserved;	/* reserved field */
1481};
1482
1483#endif	/* __IP_COMPAT_H__ */
1484