2 * Copyright (C) 2012 by Darren Reed.
4 * See the IPFILTER.LICENCE file for details on licencing.
6 * @(#)ip_compat.h 1.8 1/14/96
8 * Id: ip_compat.h,v 2.142.2.57 2007/10/10 09:51:42 darrenr Exp $
11 #ifndef __IP_COMPAT_H__
12 #define __IP_COMPAT_H__
26 #if defined(_KERNEL) || defined(KERNEL) || defined(__KERNEL__)
36 # if defined(sun) && (defined(__svr4__) || defined(__SVR4))
44 #if defined(__SVR4) || defined(__svr4__) || defined(__sgi)
46 # if !defined(_KERNEL)
47 # define bzero(a,b) memset(a,0,b)
49 # define bcopy(a,b,c) memmove(b,a,c)
55 # define LIFNAMSIZ IF_NAMESIZE
58 # define LIFNAMSIZ IFNAMSIZ
65 #if defined(__sgi) || defined(bsdi) || defined(__hpux) || defined(hpux)
67 u_char ether_addr_octet[6];
72 # define IPL_EXTERN(ep) ipl##ep
74 # define IPL_EXTERN(ep) ipl/**/ep
78 * This is a workaround for <sys/uio.h> troubles on FreeBSD and OpenBSD.
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)))
117 /* ----------------------------------------------------------------------- */
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)
128 # if !defined(USE_INET6) && !defined(NOINET6)
133 # if defined(_KERNEL)
134 # include <netinet/ip_var.h>
135 # define p_cred td_ucred
136 # define p_uid td_ucred->cr_ruid
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.
142 # define HAVE_M_PULLDOWN
143 # if !defined(IPFILTER_LKM) && (__FreeBSD_version >= 300000)
144 # include "opt_ipfilter.h"
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))
151 # include <inttypes.h>
152 # endif /* _KERNEL */
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
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); \
172 rw_runlock(&(x)->ipf_lk); \
176 # include <net/if_var.h>
177 # define IFNAME(x) ((struct ifnet *)x)->if_xname
178 # define COPYIFNAME(v, x, b) \
180 ((struct ifnet *)x)->if_xname, \
184 # define GETKTIME(x) microtime((struct timeval *)x)
186 # include <netinet/in_systm.h>
187 # include <netinet/ip.h>
188 # include <machine/in_cksum.h>
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,\
195 # define MUTEX_DESTROY(x) mtx_destroy(&(x)->ipf_lk)
196 # define MUTEX_NUKE(x) bzero((x), sizeof(*(x)))
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.
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)
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"); }
224 typedef struct mbuf mb_t;
225 # endif /* _KERNEL */
228 typedef u_long ioctlcmd_t;
229 typedef struct uio uio_t;
231 typedef u_int32_t u_32_t;
235 /* ----------------------------------------------------------------------- */
237 /* ----------------------------------------------------------------------- */
240 * For BSD kernels, if bpf is in the kernel, enable ipfilter to use bpf in
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
251 * Userland locking primitives
254 #if !defined(KMUTEX_FILL_SZ)
255 # define KMUTEX_FILL_SZ 1
257 #if !defined(KRWLOCK_FILL_SZ)
258 # define KRWLOCK_FILL_SZ 1
280 char _fill[KMUTEX_FILL_SZ];
284 const char *ipf_lname;
291 char _fill[KRWLOCK_FILL_SZ];
295 const char *ipf_lname;
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
310 #if !defined(__GNUC__) || \
311 (defined(__FreeBSD_version) && (__FreeBSD_version >= 503000))
316 # define INLINE __inline__
319 #if defined(__FreeBSD_version) && defined(_KERNEL)
320 CTASSERT(sizeof(ipfrwlock_t) == KRWLOCK_FILL_SZ);
321 CTASSERT(sizeof(ipfmutex_t) == KMUTEX_FILL_SZ);
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.
331 typedef struct mb_s {
332 struct mb_s *mb_next;
340 # define m_next mb_next
342 # define m_len mb_len
344 # define m_flags mb_flags
346 # define m_data mb_data
348 # define M_MCAST 0x01
350 # define M_BCAST 0x02
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); \
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) ;
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), \
387 # define COPYBACK(m, o, l, b) bcopy((b), \
388 MTOD((mb_t *)m, char *) + (o), \
390 # define UIOMOVE(a,b,c,d) ipfuiomove((caddr_t)a,b,c,d)
391 extern void m_copydata __P((mb_t *, int, int, caddr_t));
392 extern int ipfuiomove __P((caddr_t, int, int, struct uio *));
393 extern int bcopywrap __P((void *, void *, size_t));
394 extern mb_t *allocmbt __P((size_t));
395 extern mb_t *dupmbt __P((mb_t *));
396 extern void freembt __P((mb_t *));
398 # define MUTEX_DESTROY(x) eMmutex_destroy(&(x)->ipf_emu, \
400 # define MUTEX_ENTER(x) eMmutex_enter(&(x)->ipf_emu, \
402 # define MUTEX_EXIT(x) eMmutex_exit(&(x)->ipf_emu, \
404 # define MUTEX_INIT(x,y) eMmutex_init(&(x)->ipf_emu, y, \
406 # define MUTEX_NUKE(x) bzero((x), sizeof(*(x)))
408 # define MUTEX_DOWNGRADE(x) eMrwlock_downgrade(&(x)->ipf_emu, \
410 # define MUTEX_TRY_UPGRADE(x) eMrwlock_try_upgrade(&(x)->ipf_emu, \
412 # define READ_ENTER(x) eMrwlock_read_enter(&(x)->ipf_emu, \
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, \
421 # define USE_MUTEXES 1
423 extern void eMmutex_destroy __P((eMmutex_t *, char *, int));
424 extern void eMmutex_enter __P((eMmutex_t *, char *, int));
425 extern void eMmutex_exit __P((eMmutex_t *, char *, int));
426 extern void eMmutex_init __P((eMmutex_t *, char *, char *, int));
427 extern void eMrwlock_destroy __P((eMrwlock_t *));
428 extern void eMrwlock_exit __P((eMrwlock_t *));
429 extern void eMrwlock_init __P((eMrwlock_t *, char *));
430 extern void eMrwlock_read_enter __P((eMrwlock_t *, char *, int));
431 extern void eMrwlock_write_enter __P((eMrwlock_t *, char *, int));
432 extern void eMrwlock_downgrade __P((eMrwlock_t *, char *, int));
436 extern mb_t *allocmbt(size_t);
438 #define MAX_IPV4HDR ((0xf << 2) + sizeof(struct icmp) + sizeof(ip_t) + 8)
441 # define IP_OFFMASK 0x1fff
446 * On BSD's use quad_t as a guarantee for getting at least a 64bit sized
449 #if !defined(__amd64__) && BSD_GT_YEAR(199306)
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
458 #endif /* BSD > 199306 */
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>
469 typedef struct ip6_hdr ip6_t;
474 # define MAX(a,b) (((a) > (b)) ? (a) : (b))
478 # if defined(MENTAT) && !defined(INSTANCES)
479 # define COPYDATA mb_copydata
480 # define COPYBACK mb_copyback
482 # define COPYDATA m_copydata
483 # define COPYBACK m_copyback
485 # if (defined(__NetBSD_Version__) && (__NetBSD_Version__ < 105180000)) || \
486 defined(__FreeBSD__) || (defined(OpenBSD) && (OpenBSD < 200206)) || \
487 defined(_BSDI_VERSION)
490 # if !defined(__FreeBSD__) || FREEBSD_GE_REV(300000)
491 # if NETBSD_GE_REV(105180000) || OPENBSD_GE_REV(200111)
492 # include <uvm/uvm_extern.h>
494 # include <vm/vm_extern.h>
495 extern vm_map_t kmem_map;
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) */
502 # ifdef IPFILTER_M_IPFILTER
503 # include <sys/malloc.h>
504 MALLOC_DECLARE(M_IPFILTER);
505 # define _M_IPF M_IPFILTER
506 # else /* IPFILTER_M_IPFILTER */
508 # define _M_IPF M_PFIL
511 # define _M_IPF M_IPFILTER
513 # define _M_IPF M_TEMP
514 # endif /* M_IPFILTER */
516 # endif /* IPFILTER_M_IPFILTER */
517 # if !defined(KMALLOC)
518 # define KMALLOC(a, b) MALLOC((a), b, sizeof(*(a)), _M_IPF, M_NOWAIT)
520 # if !defined(KMALLOCS)
521 # define KMALLOCS(a, b, c) MALLOC((a), b, (c), _M_IPF, M_NOWAIT)
524 # define KFREE(x) FREE((x), _M_IPF)
526 # if !defined(KFREES)
527 # define KFREES(x,s) FREE((x), _M_IPF)
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)
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
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()
545 # define SPL_X(x) (void) splx(x)
546 # endif /* !USE_MUTEXES */
549 # define FREE_MB_T(m) m_freem(m)
553 # define ALLOC_MB_T(m,l) do { \
554 MGETHDR((m), M_DONTWAIT, MT_HEADER); \
557 (m)->m_pkthdr.len = (l); \
561 # define ALLOC_MB_T(m,l) do { \
562 MGET((m), M_DONTWAIT, MT_HEADER); \
565 (m)->m_pkthdr.len = (l); \
571 # define PREP_MB_T(f, m) do { \
572 mb_t *_o = *(f)->fin_mp; \
574 *(fin)->fin_mp = (m); \
575 if (_o->m_flags & M_PKTHDR) { \
576 (m)->m_pkthdr.len += \
578 (m)->m_pkthdr.rcvif = \
579 _o->m_pkthdr.rcvif; \
585 # define M_DUP(m) m_dup(m, 0, M_COPYALL, 0)
587 # define M_DUP(m) m_dup(m)
592 # define MTOD(m,t) mtod(m,t)
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)
601 # define KMALLOC(a,b) (a) = (b)new_kmem_alloc(sizeof(*(a)), \
603 # define KMALLOCS(a,b,c) (a) = (b)new_kmem_alloc((c), KMEM_NOSLEEP)
607 # define GET_MINOR(x) dev2unit(x)
609 # define PANIC(x,y) if (x) panic y
612 #if !defined(IFNAME) && !defined(_KERNEL)
613 # define IFNAME(x) get_ifname((struct ifnet *)x)
616 # define NEED_FRGETIFNAME
617 extern char *ipf_getifname __P((struct ifnet *, char *));
618 # define COPYIFNAME(v, x, b) \
619 ipf_getifname((struct ifnet *)x, b)
626 # define ASSERT(x) do { if (!(x)) abort(); } while (0)
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)
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.
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))
650 * If mutexes aren't being used, turn all the mutex functions into null-ops.
652 #if !defined(USE_MUTEXES)
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 */
672 # define ATOMIC_INC(x) (x)++
673 # define ATOMIC_DEC(x) (x)--
676 #if defined(USE_SPL) && defined(_KERNEL)
677 # define SPL_INT(x) int x
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.
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
695 #ifndef HDR_T_PRIVATE
696 typedef struct tcphdr tcphdr_t;
697 typedef struct udphdr udphdr_t;
699 typedef struct icmp icmphdr_t;
700 typedef struct ip ip_t;
701 typedef struct ether_header ether_header_t;
702 typedef struct tcpiphdr tcpiphdr_t;
705 # define FR_GROUPLEN 16
709 # define offsetof(t,m) (size_t)((&((t *)0L)->m))
712 # define stsizeof(t,m) sizeof(((t *)0L)->m)
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
721 # define IP_V(x) (x)->ip_v
724 # define IP_V_A(x,y) (x)->ip_v = (y)
727 # define IP_HL(x) (x)->ip_hl
730 # define IP_HL_A(x,y) (x)->ip_hl = ((y) & 0xf)
733 # define TCP_X2(x) (x)->th_x2
736 # define TCP_X2_A(x,y) (x)->th_x2 = (y)
739 # define TCP_OFF(x) (x)->th_off
742 # define TCP_OFF_A(x,y) (x)->th_off = (y)
744 #define IPMINLEN(i, h) ((i)->ip_len >= (IP_HL(i) * 4 + sizeof(struct h)))
748 * XXX - This is one of those *awful* hacks which nobody likes
756 #define TCPF_ALL (TH_FIN|TH_SYN|TH_RST|TH_PUSH|TH_ACK|TH_URG|\
759 #if BSD_GE_YEAR(199306) && !defined(m_act)
760 # define m_act m_nextpkt
764 * Security Options for Intenet Protocol (IPSO) as defined in RFC 1108.
768 * 00000001 - (Reserved 4)
769 * 00111101 - Top Secret
771 * 10010110 - Confidential
772 * 01100110 - (Reserved 3)
773 * 11001100 - (Reserved 2)
774 * 10101011 - Unclassified
775 * 11110001 - (Reserved 1)
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
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
800 #define IPOPT_ZSU 10 /* ZSU */
802 #define IPOPT_MTUP 11 /* MTUP */
804 #define IPOPT_MTUR 12 /* MTUR */
806 #define IPOPT_ENCODE 15 /* ENCODE */
810 #define IPOPT_TR 82 /* TR */
811 #undef IPOPT_SECURITY
812 #define IPOPT_SECURITY 130
814 #define IPOPT_LSRR 131
816 #define IPOPT_E_SEC 133 /* E-SEC */
818 #define IPOPT_CIPSO 134 /* CIPSO */
820 #define IPOPT_SATID 136
822 # define IPOPT_SID IPOPT_SATID
825 #define IPOPT_SSRR 137
827 #define IPOPT_ADDEXT 147 /* ADDEXT */
829 #define IPOPT_VISA 142 /* VISA */
831 #define IPOPT_IMITD 144 /* IMITD */
833 #define IPOPT_EIP 145 /* EIP */
835 #define IPOPT_RTRALRT 148 /* RTRALRT */
837 #define IPOPT_SDB 149
839 #define IPOPT_NSAPA 150
841 #define IPOPT_DPS 151
843 #define IPOPT_UMP 152
845 #define IPOPT_FINN 205 /* FINN */
847 #define IPOPT_AH 256+IPPROTO_AH
850 # define TCPOPT_EOL 0
853 # define TCPOPT_NOP 1
855 #ifndef TCPOPT_MAXSEG
856 # define TCPOPT_MAXSEG 2
858 #ifndef TCPOLEN_MAXSEG
859 # define TCPOLEN_MAXSEG 4
861 #ifndef TCPOPT_WINDOW
862 # define TCPOPT_WINDOW 3
864 #ifndef TCPOLEN_WINDOW
865 # define TCPOLEN_WINDOW 3
867 #ifndef TCPOPT_SACK_PERMITTED
868 # define TCPOPT_SACK_PERMITTED 4
870 #ifndef TCPOLEN_SACK_PERMITTED
871 # define TCPOLEN_SACK_PERMITTED 2
874 # define TCPOPT_SACK 5
876 #ifndef TCPOPT_TIMESTAMP
877 # define TCPOPT_TIMESTAMP 8
881 # define ICMP_MINLEN 8
883 #ifndef ICMP_ECHOREPLY
884 # define ICMP_ECHOREPLY 0
887 # define ICMP_UNREACH 3
889 #ifndef ICMP_UNREACH_NET
890 # define ICMP_UNREACH_NET 0
892 #ifndef ICMP_UNREACH_HOST
893 # define ICMP_UNREACH_HOST 1
895 #ifndef ICMP_UNREACH_PROTOCOL
896 # define ICMP_UNREACH_PROTOCOL 2
898 #ifndef ICMP_UNREACH_PORT
899 # define ICMP_UNREACH_PORT 3
901 #ifndef ICMP_UNREACH_NEEDFRAG
902 # define ICMP_UNREACH_NEEDFRAG 4
904 #ifndef ICMP_UNREACH_SRCFAIL
905 # define ICMP_UNREACH_SRCFAIL 5
907 #ifndef ICMP_UNREACH_NET_UNKNOWN
908 # define ICMP_UNREACH_NET_UNKNOWN 6
910 #ifndef ICMP_UNREACH_HOST_UNKNOWN
911 # define ICMP_UNREACH_HOST_UNKNOWN 7
913 #ifndef ICMP_UNREACH_ISOLATED
914 # define ICMP_UNREACH_ISOLATED 8
916 #ifndef ICMP_UNREACH_NET_PROHIB
917 # define ICMP_UNREACH_NET_PROHIB 9
919 #ifndef ICMP_UNREACH_HOST_PROHIB
920 # define ICMP_UNREACH_HOST_PROHIB 10
922 #ifndef ICMP_UNREACH_TOSNET
923 # define ICMP_UNREACH_TOSNET 11
925 #ifndef ICMP_UNREACH_TOSHOST
926 # define ICMP_UNREACH_TOSHOST 12
928 #ifndef ICMP_UNREACH_ADMIN_PROHIBIT
929 # define ICMP_UNREACH_ADMIN_PROHIBIT 13
931 #ifndef ICMP_UNREACH_FILTER
932 # define ICMP_UNREACH_FILTER 13
934 #ifndef ICMP_UNREACH_HOST_PRECEDENCE
935 # define ICMP_UNREACH_HOST_PRECEDENCE 14
937 #ifndef ICMP_UNREACH_PRECEDENCE_CUTOFF
938 # define ICMP_UNREACH_PRECEDENCE_CUTOFF 15
940 #ifndef ICMP_SOURCEQUENCH
941 # define ICMP_SOURCEQUENCH 4
943 #ifndef ICMP_REDIRECT_NET
944 # define ICMP_REDIRECT_NET 0
946 #ifndef ICMP_REDIRECT_HOST
947 # define ICMP_REDIRECT_HOST 1
949 #ifndef ICMP_REDIRECT_TOSNET
950 # define ICMP_REDIRECT_TOSNET 2
952 #ifndef ICMP_REDIRECT_TOSHOST
953 # define ICMP_REDIRECT_TOSHOST 3
955 #ifndef ICMP_ALTHOSTADDR
956 # define ICMP_ALTHOSTADDR 6
958 #ifndef ICMP_TIMXCEED
959 # define ICMP_TIMXCEED 11
961 #ifndef ICMP_TIMXCEED_INTRANS
962 # define ICMP_TIMXCEED_INTRANS 0
964 #ifndef ICMP_TIMXCEED_REASS
965 # define ICMP_TIMXCEED_REASS 1
967 #ifndef ICMP_PARAMPROB
968 # define ICMP_PARAMPROB 12
970 #ifndef ICMP_PARAMPROB_ERRATPTR
971 # define ICMP_PARAMPROB_ERRATPTR 0
973 #ifndef ICMP_PARAMPROB_OPTABSENT
974 # define ICMP_PARAMPROB_OPTABSENT 1
976 #ifndef ICMP_PARAMPROB_LENGTH
977 # define ICMP_PARAMPROB_LENGTH 2
980 # define ICMP_TSTAMP 13
982 #ifndef ICMP_TSTAMPREPLY
983 # define ICMP_TSTAMPREPLY 14
986 # define ICMP_IREQ 15
988 #ifndef ICMP_IREQREPLY
989 # define ICMP_IREQREPLY 16
992 # define ICMP_MASKREQ 17
994 #ifndef ICMP_MASKREPLY
995 # define ICMP_MASKREPLY 18
997 #ifndef ICMP_TRACEROUTE
998 # define ICMP_TRACEROUTE 30
1000 #ifndef ICMP_DATACONVERR
1001 # define ICMP_DATACONVERR 31
1003 #ifndef ICMP_MOBILE_REDIRECT
1004 # define ICMP_MOBILE_REDIRECT 32
1006 #ifndef ICMP_IPV6_WHEREAREYOU
1007 # define ICMP_IPV6_WHEREAREYOU 33
1009 #ifndef ICMP_IPV6_IAMHERE
1010 # define ICMP_IPV6_IAMHERE 34
1012 #ifndef ICMP_MOBILE_REGREQUEST
1013 # define ICMP_MOBILE_REGREQUEST 35
1015 #ifndef ICMP_MOBILE_REGREPLY
1016 # define ICMP_MOBILE_REGREPLY 36
1019 # define ICMP_SKIP 39
1021 #ifndef ICMP_PHOTURIS
1022 # define ICMP_PHOTURIS 40
1024 #ifndef ICMP_PHOTURIS_UNKNOWN_INDEX
1025 # define ICMP_PHOTURIS_UNKNOWN_INDEX 1
1027 #ifndef ICMP_PHOTURIS_AUTH_FAILED
1028 # define ICMP_PHOTURIS_AUTH_FAILED 2
1030 #ifndef ICMP_PHOTURIS_DECRYPT_FAILED
1031 # define ICMP_PHOTURIS_DECRYPT_FAILED 3
1034 # define IPVERSION 4
1036 #ifndef IPOPT_MINOFF
1037 # define IPOPT_MINOFF 4
1039 #ifndef IPOPT_COPIED
1040 # define IPOPT_COPIED(x) ((x)&0x80)
1043 # define IPOPT_EOL 0
1046 # define IPOPT_NOP 1
1049 # define IP_MF ((u_short)0x2000)
1051 #ifndef ETHERTYPE_IP
1052 # define ETHERTYPE_IP ((u_short)0x0800)
1055 # define TH_FIN 0x01
1058 # define TH_SYN 0x02
1061 # define TH_RST 0x04
1064 # define TH_PUSH 0x08
1067 # define TH_ACK 0x10
1070 # define TH_URG 0x20
1073 #define TH_ACKMASK (TH_FIN|TH_SYN|TH_RST|TH_ACK)
1076 # define IPOPT_EOL 0
1079 # define IPOPT_NOP 1
1085 # define IPOPT_TS 68
1087 #ifndef IPOPT_SECURITY
1088 # define IPOPT_SECURITY 130
1091 # define IPOPT_LSRR 131
1094 # define IPOPT_SATID 136
1097 # define IPOPT_SSRR 137
1099 #ifndef IPOPT_SECUR_UNCLASS
1100 # define IPOPT_SECUR_UNCLASS ((u_short)0x0000)
1102 #ifndef IPOPT_SECUR_CONFID
1103 # define IPOPT_SECUR_CONFID ((u_short)0xf135)
1105 #ifndef IPOPT_SECUR_EFTO
1106 # define IPOPT_SECUR_EFTO ((u_short)0x789a)
1108 #ifndef IPOPT_SECUR_MMMM
1109 # define IPOPT_SECUR_MMMM ((u_short)0xbc4d)
1111 #ifndef IPOPT_SECUR_RESTR
1112 # define IPOPT_SECUR_RESTR ((u_short)0xaf13)
1114 #ifndef IPOPT_SECUR_SECRET
1115 # define IPOPT_SECUR_SECRET ((u_short)0xd788)
1117 #ifndef IPOPT_SECUR_TOPSECRET
1118 # define IPOPT_SECUR_TOPSECRET ((u_short)0x6bc5)
1121 # define IPOPT_OLEN 1
1123 #ifndef IPPROTO_HOPOPTS
1124 # define IPPROTO_HOPOPTS 0
1126 #ifndef IPPROTO_IPIP
1127 # define IPPROTO_IPIP 4
1129 #ifndef IPPROTO_ENCAP
1130 # define IPPROTO_ENCAP 98
1132 #ifndef IPPROTO_IPV6
1133 # define IPPROTO_IPV6 41
1135 #ifndef IPPROTO_ROUTING
1136 # define IPPROTO_ROUTING 43
1138 #ifndef IPPROTO_FRAGMENT
1139 # define IPPROTO_FRAGMENT 44
1142 # define IPPROTO_GRE 47 /* GRE encaps RFC 1701 */
1145 # define IPPROTO_ESP 50
1148 # define IPPROTO_AH 51
1150 #ifndef IPPROTO_ICMPV6
1151 # define IPPROTO_ICMPV6 58
1153 #ifndef IPPROTO_NONE
1154 # define IPPROTO_NONE 59
1156 #ifndef IPPROTO_DSTOPTS
1157 # define IPPROTO_DSTOPTS 60
1159 #ifndef IPPROTO_MOBILITY
1160 # define IPPROTO_MOBILITY 135
1163 #ifndef ICMP_ROUTERADVERT
1164 # define ICMP_ROUTERADVERT 9
1166 #ifndef ICMP_ROUTERSOLICIT
1167 # define ICMP_ROUTERSOLICIT 10
1169 #ifndef ICMP6_DST_UNREACH
1170 # define ICMP6_DST_UNREACH 1
1172 #ifndef ICMP6_PACKET_TOO_BIG
1173 # define ICMP6_PACKET_TOO_BIG 2
1175 #ifndef ICMP6_TIME_EXCEEDED
1176 # define ICMP6_TIME_EXCEEDED 3
1178 #ifndef ICMP6_PARAM_PROB
1179 # define ICMP6_PARAM_PROB 4
1182 #ifndef ICMP6_ECHO_REQUEST
1183 # define ICMP6_ECHO_REQUEST 128
1185 #ifndef ICMP6_ECHO_REPLY
1186 # define ICMP6_ECHO_REPLY 129
1188 #ifndef ICMP6_MEMBERSHIP_QUERY
1189 # define ICMP6_MEMBERSHIP_QUERY 130
1191 #ifndef MLD6_LISTENER_QUERY
1192 # define MLD6_LISTENER_QUERY 130
1194 #ifndef ICMP6_MEMBERSHIP_REPORT
1195 # define ICMP6_MEMBERSHIP_REPORT 131
1197 #ifndef MLD6_LISTENER_REPORT
1198 # define MLD6_LISTENER_REPORT 131
1200 #ifndef ICMP6_MEMBERSHIP_REDUCTION
1201 # define ICMP6_MEMBERSHIP_REDUCTION 132
1203 #ifndef MLD6_LISTENER_DONE
1204 # define MLD6_LISTENER_DONE 132
1206 #ifndef ND_ROUTER_SOLICIT
1207 # define ND_ROUTER_SOLICIT 133
1209 #ifndef ND_ROUTER_ADVERT
1210 # define ND_ROUTER_ADVERT 134
1212 #ifndef ND_NEIGHBOR_SOLICIT
1213 # define ND_NEIGHBOR_SOLICIT 135
1215 #ifndef ND_NEIGHBOR_ADVERT
1216 # define ND_NEIGHBOR_ADVERT 136
1219 # define ND_REDIRECT 137
1221 #ifndef ICMP6_ROUTER_RENUMBERING
1222 # define ICMP6_ROUTER_RENUMBERING 138
1224 #ifndef ICMP6_WRUREQUEST
1225 # define ICMP6_WRUREQUEST 139
1227 #ifndef ICMP6_WRUREPLY
1228 # define ICMP6_WRUREPLY 140
1230 #ifndef ICMP6_FQDN_QUERY
1231 # define ICMP6_FQDN_QUERY 139
1233 #ifndef ICMP6_FQDN_REPLY
1234 # define ICMP6_FQDN_REPLY 140
1236 #ifndef ICMP6_NI_QUERY
1237 # define ICMP6_NI_QUERY 139
1239 #ifndef ICMP6_NI_REPLY
1240 # define ICMP6_NI_REPLY 140
1242 #ifndef MLD6_MTRACE_RESP
1243 # define MLD6_MTRACE_RESP 200
1246 # define MLD6_MTRACE 201
1248 #ifndef ICMP6_HADISCOV_REQUEST
1249 # define ICMP6_HADISCOV_REQUEST 202
1251 #ifndef ICMP6_HADISCOV_REPLY
1252 # define ICMP6_HADISCOV_REPLY 203
1254 #ifndef ICMP6_MOBILEPREFIX_SOLICIT
1255 # define ICMP6_MOBILEPREFIX_SOLICIT 204
1257 #ifndef ICMP6_MOBILEPREFIX_ADVERT
1258 # define ICMP6_MOBILEPREFIX_ADVERT 205
1260 #ifndef ICMP6_MAXTYPE
1261 # define ICMP6_MAXTYPE 205
1264 #ifndef ICMP6_DST_UNREACH_NOROUTE
1265 # define ICMP6_DST_UNREACH_NOROUTE 0
1267 #ifndef ICMP6_DST_UNREACH_ADMIN
1268 # define ICMP6_DST_UNREACH_ADMIN 1
1270 #ifndef ICMP6_DST_UNREACH_NOTNEIGHBOR
1271 # define ICMP6_DST_UNREACH_NOTNEIGHBOR 2
1273 #ifndef ICMP6_DST_UNREACH_BEYONDSCOPE
1274 # define ICMP6_DST_UNREACH_BEYONDSCOPE 2
1276 #ifndef ICMP6_DST_UNREACH_ADDR
1277 # define ICMP6_DST_UNREACH_ADDR 3
1279 #ifndef ICMP6_DST_UNREACH_NOPORT
1280 # define ICMP6_DST_UNREACH_NOPORT 4
1282 #ifndef ICMP6_TIME_EXCEED_TRANSIT
1283 # define ICMP6_TIME_EXCEED_TRANSIT 0
1285 #ifndef ICMP6_TIME_EXCEED_REASSEMBLY
1286 # define ICMP6_TIME_EXCEED_REASSEMBLY 1
1289 #ifndef ICMP6_NI_SUCCESS
1290 # define ICMP6_NI_SUCCESS 0
1292 #ifndef ICMP6_NI_REFUSED
1293 # define ICMP6_NI_REFUSED 1
1295 #ifndef ICMP6_NI_UNKNOWN
1296 # define ICMP6_NI_UNKNOWN 2
1299 #ifndef ICMP6_ROUTER_RENUMBERING_COMMAND
1300 # define ICMP6_ROUTER_RENUMBERING_COMMAND 0
1302 #ifndef ICMP6_ROUTER_RENUMBERING_RESULT
1303 # define ICMP6_ROUTER_RENUMBERING_RESULT 1
1305 #ifndef ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET
1306 # define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255
1309 #ifndef ICMP6_PARAMPROB_HEADER
1310 # define ICMP6_PARAMPROB_HEADER 0
1312 #ifndef ICMP6_PARAMPROB_NEXTHEADER
1313 # define ICMP6_PARAMPROB_NEXTHEADER 1
1315 #ifndef ICMP6_PARAMPROB_OPTION
1316 # define ICMP6_PARAMPROB_OPTION 2
1319 #ifndef ICMP6_NI_SUBJ_IPV6
1320 # define ICMP6_NI_SUBJ_IPV6 0
1322 #ifndef ICMP6_NI_SUBJ_FQDN
1323 # define ICMP6_NI_SUBJ_FQDN 1
1325 #ifndef ICMP6_NI_SUBJ_IPV4
1326 # define ICMP6_NI_SUBJ_IPV4 2
1329 #ifndef MLD_MTRACE_RESP
1330 # define MLD_MTRACE_RESP 200
1333 # define MLD_MTRACE 201
1335 #ifndef MLD6_MTRACE_RESP
1336 # define MLD6_MTRACE_RESP MLD_MTRACE_RESP
1339 # define MLD6_MTRACE MLD_MTRACE
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) */
1346 # if(BYTE_ORDER == LITTLE_ENDIAN) || !defined(_BIG_ENDIAN)
1347 # define IPV6_FLOWINFO_MASK 0xffffff0f /* flow info (28 bits) */
1348 # endif /* LITTLE_ENDIAN */
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) */
1355 # if (BYTE_ORDER == LITTLE_ENDIAN) || !defined(_BIG_ENDIAN)
1356 # define IPV6_FLOWLABEL_MASK 0xffff0f00 /* flow label (20 bits) */
1357 # endif /* LITTLE_ENDIAN */
1362 * ECN is a new addition to TCP - RFC 2481
1365 # define TH_ECN 0x40
1368 # define TH_CWR 0x80
1370 #define TH_ECNALL (TH_ECN|TH_CWR)
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
1394 #undef ICMP_MAX_UNREACH
1395 #define ICMP_MAX_UNREACH 14
1397 #define ICMP_MAXTYPE 18
1404 # define LOG_FTP (11<<3)
1406 #ifndef LOG_AUTHPRIV
1407 # define LOG_AUTHPRIV (10<<3)
1410 # define LOG_AUDIT (13<<3)
1413 # define LOG_NTP (12<<3)
1415 #ifndef LOG_SECURITY
1416 # define LOG_SECURITY (13<<3)
1419 # define LOG_LFMT (14<<3)
1422 # define LOG_CONSOLE (14<<3)
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.
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)
1438 # define MIN(a,b) (((a)<(b))?(a):(b))
1442 # undef IPFILTER_BPF
1446 # define DPRINT(x) printf x
1452 # define AF_INET6 26
1457 # define DT(_n) DTRACE_PROBE(_n)
1458 # define DT1(_n,_a,_b) DTRACE_PROBE1(_n,_a,_b)
1459 # define DT2(_n,_a,_b,_c,_d) DTRACE_PROBE2(_n,_a,_b,_c,_d)
1460 # define DT3(_n,_a,_b,_c,_d,_e,_f) \
1461 DTRACE_PROBE3(_n,_a,_b,_c,_d,_e,_f)
1462 # define DT4(_n,_a,_b,_c,_d,_e,_f,_g,_h) \
1463 DTRACE_PROBE4(_n,_a,_b,_c,_d,_e,_f,_g,_h)
1466 # define DT1(_n,_a,_b)
1467 # define DT2(_n,_a,_b,_c,_d)
1468 # define DT3(_n,_a,_b,_c,_d,_e,_f)
1469 # define DT4(_n,_a,_b,_c,_d,_e,_f,_g,_h)
1473 # define DT1(_n,_a,_b)
1474 # define DT2(_n,_a,_b,_c,_d)
1475 # define DT3(_n,_a,_b,_c,_d,_e,_f)
1476 # define DT4(_n,_a,_b,_c,_d,_e,_f,_g,_h)
1479 struct ip6_routing {
1480 u_char ip6r_nxt; /* next header */
1481 u_char ip6r_len; /* length in units of 8 octets */
1482 u_char ip6r_type; /* always zero */
1483 u_char ip6r_segleft; /* segments left */
1484 u_32_t ip6r_reserved; /* reserved field */
1487 #endif /* __IP_COMPAT_H__ */