1/*
2 * Copyright (C) 2012 by Darren Reed.
3 *
4 * See the IPFILTER.LICENCE file for details on licencing.
5 * Id: ip_compat.h,v 2.142.2.57 2007/10/10 09:51:42 darrenr Exp $
6 */
7
8#ifndef __IP_COMPAT_H__
9#define __IP_COMPAT_H__
10
11#if defined(_KERNEL) || defined(KERNEL) || defined(__KERNEL__)
12# undef KERNEL
13# undef _KERNEL
14# undef __KERNEL__
15# define KERNEL
16# define _KERNEL
17# define __KERNEL__
18#endif
19
20#ifndef SOLARIS
21# if defined(sun) && defined(__SVR4)
22# define SOLARIS 1
23# else
24# define SOLARIS 0
25# endif
26#endif
27
28
29#if defined(__SVR4)
30# define index strchr
31# if !defined(_KERNEL)
32# define bzero(a,b) memset(a,0,b)
33# define bcmp memcmp
34# define bcopy(a,b,c) memmove(b,a,c)
35# endif
36#endif
37
38#ifndef LIFNAMSIZ
39# ifdef IF_NAMESIZE
40# define LIFNAMSIZ IF_NAMESIZE
41# else
42# ifdef IFNAMSIZ
43# define LIFNAMSIZ IFNAMSIZ
44# else
45# define LIFNAMSIZ 16
46# endif
47# endif
48#endif
49
50
51# define IPL_EXTERN(ep) ipl##ep
52
53/*
54 * This is a workaround for <sys/uio.h> troubles on FreeBSD and OpenBSD.
55 */
56#ifndef _KERNEL
57# define ADD_KERNEL
58# define _KERNEL
59# define KERNEL
60#endif
61#include <sys/uio.h>
62#ifdef ADD_KERNEL
63# undef _KERNEL
64# undef KERNEL
65#endif
66
67#define NETBSD_GE_REV(x) (defined(__NetBSD_Version__) && \
68 (__NetBSD_Version__ >= (x)))
69#define NETBSD_GT_REV(x) (defined(__NetBSD_Version__) && \
70 (__NetBSD_Version__ > (x)))
71#define NETBSD_LT_REV(x) (defined(__NetBSD_Version__) && \
72 (__NetBSD_Version__ < (x)))
73
74
75/* ----------------------------------------------------------------------- */
76/* F R E E B S D */
77/* ----------------------------------------------------------------------- */
78#define HAS_SYS_MD5_H 1
79#if defined(_KERNEL)
80# include "opt_bpf.h"
81# include "opt_inet6.h"
82# if defined(INET6) && !defined(USE_INET6)
83# define USE_INET6
84# endif
85#else
86# if !defined(USE_INET6) && !defined(NOINET6)
87# define USE_INET6
88# endif
89#endif
90
91#if defined(_KERNEL)
92# include <netinet/ip_var.h>
93# define p_cred td_ucred
94# define p_uid td_ucred->cr_ruid
95
96/*
97 * When #define'd, the 5.2.1 kernel panics when used with the ftp proxy.
98 * There may be other, safe, kernels but this is not extensively tested yet.
99 */
100# define HAVE_M_PULLDOWN
101# if !defined(IPFILTER_LKM) && defined(__FreeBSD__)
102# include "opt_ipfilter.h"
103# endif
104# define COPYIN(a,b,c) copyin((caddr_t)(a), (caddr_t)(b), (c))
105# define COPYOUT(a,b,c) copyout((caddr_t)(a), (caddr_t)(b), (c))
106
107#else
108# include <inttypes.h>
109#endif /* _KERNEL */
110
111#include <sys/selinfo.h>
112#include <sys/lock.h>
113#include <sys/malloc.h>
114#include <sys/mutex.h>
115#define KRWLOCK_FILL_SZ 56
116#define KMUTEX_FILL_SZ 56
117#include <sys/rwlock.h>
118#define KMUTEX_T struct mtx
119#define KRWLOCK_T struct rwlock
120
121#ifdef _KERNEL
122# define READ_ENTER(x) rw_rlock(&(x)->ipf_lk)
123# define WRITE_ENTER(x) rw_wlock(&(x)->ipf_lk)
124# define MUTEX_DOWNGRADE(x) rw_downgrade(&(x)->ipf_lk)
125# define MUTEX_TRY_UPGRADE(x) rw_try_upgrade(&(x)->ipf_lk)
126# define RWLOCK_INIT(x,y) rw_init(&(x)->ipf_lk, (y))
127# define RW_DESTROY(x) rw_destroy(&(x)->ipf_lk)
128# define RWLOCK_EXIT(x) do { \
129 if (rw_wowned(&(x)->ipf_lk)) \
130 rw_wunlock(&(x)->ipf_lk); \
131 else \
132 rw_runlock(&(x)->ipf_lk); \
133 } while (0)
134# include <net/if_var.h>
135# include <net/if_private.h>
136# define GETKTIME(x) microtime((struct timeval *)x)
137# define if_addrlist if_addrhead
138
139# include <netinet/in_systm.h>
140# include <netinet/ip.h>
141# include <machine/in_cksum.h>
142
143# define USE_MUTEXES
144# define MUTEX_ENTER(x) mtx_lock(&(x)->ipf_lk)
145# define MUTEX_EXIT(x) mtx_unlock(&(x)->ipf_lk)
146# define MUTEX_INIT(x,y) mtx_init(&(x)->ipf_lk, (y), NULL,\
147 MTX_DEF)
148# define MUTEX_DESTROY(x) mtx_destroy(&(x)->ipf_lk)
149# define MUTEX_NUKE(x) bzero((x), sizeof(*(x)))
150/*
151 * Whilst the sx(9) locks on FreeBSD have the right semantics and interface
152 * for what we want to use them for, despite testing showing they work -
153 * with a WITNESS kernel, it generates LOR messages.
154 */
155# include <machine/atomic.h>
156# define ATOMIC_INC(x) { mtx_lock(&softc->ipf_rw.ipf_lk); (x)++; \
157 mtx_unlock(&softc->ipf_rw.ipf_lk); }
158# define ATOMIC_DEC(x) { mtx_lock(&softc->ipf_rw.ipf_lk); (x)--; \
159 mtx_unlock(&softc->ipf_rw.ipf_lk); }
160# define ATOMIC_INCL(x) atomic_add_long(&(x), 1)
161# define ATOMIC_INC64(x) ATOMIC_INC(x)
162# define ATOMIC_INC32(x) atomic_add_32((u_int *)&(x), 1)
163# define ATOMIC_DECL(x) atomic_add_long(&(x), -1)
164# define ATOMIC_DEC64(x) ATOMIC_DEC(x)
165# define ATOMIC_DEC32(x) atomic_add_32((u_int *)&(x), -1)
166# define SPL_X(x) ;
167# define SPL_NET(x) ;
168# define SPL_IMP(x) ;
169# define SPL_SCHED(x) ;
170# define GET_MINOR dev2unit
171# define MSGDSIZE(m) mbufchainlen(m)
172# define M_LEN(m) (m)->m_len
173# define M_ADJ(m,x) m_adj(m, x)
174# define M_COPY(x) m_copym((x), 0, M_COPYALL, M_NOWAIT)
175# define M_DUP(m) m_dup(m, M_NOWAIT)
176# define IPF_PANIC(x,y) if (x) { printf y; panic("ipf_panic"); }
177typedef struct mbuf mb_t;
178
179#else /* !_KERNEL */
180# ifndef _NET_IF_VAR_H_
181/*
182 * Userland emulation of struct ifnet.
183 */
184struct route;
185struct mbuf;
186struct ifnet {
187 char if_xname[IFNAMSIZ];
188 STAILQ_HEAD(, ifaddr) if_addrlist;
189 int (*if_output)(struct ifnet *, struct mbuf *,
190 const struct sockaddr *, struct route *);
191};
192# endif /* _NET_IF_VAR_H_ */
193#endif /* _KERNEL */
194
195#define IFNAME(x) ((struct ifnet *)x)->if_xname
196#define COPYIFNAME(v, x, b) \
197 (void) strncpy(b, \
198 ((struct ifnet *)x)->if_xname, \
199 LIFNAMSIZ)
200
201typedef u_long ioctlcmd_t;
202typedef struct uio uio_t;
203typedef int minor_t;
204typedef u_int32_t u_32_t;
205# define U_32_T 1
206
207
208/* ----------------------------------------------------------------------- */
209/* G E N E R I C */
210/* ----------------------------------------------------------------------- */
211
212/*
213 * For BSD kernels, if bpf is in the kernel, enable ipfilter to use bpf in
214 * filter rules.
215 */
216#if !defined(IPFILTER_BPF)
217# if (defined(NBPF) && (NBPF > 0)) || (defined(DEV_BPF) && (DEV_BPF > 0)) || \
218 (defined(NBPFILTER) && (NBPFILTER > 0))
219# define IPFILTER_BPF
220# endif
221#endif
222
223/*
224 * Userland locking primitives
225 */
226#ifndef _KERNEL
227# if !defined(KMUTEX_FILL_SZ)
228# define KMUTEX_FILL_SZ 1
229# endif
230# if !defined(KRWLOCK_FILL_SZ)
231# define KRWLOCK_FILL_SZ 1
232# endif
233#endif
234
235typedef struct {
236 char *eMm_owner;
237 char *eMm_heldin;
238 u_int eMm_magic;
239 int eMm_held;
240 int eMm_heldat;
241} eMmutex_t;
242
243typedef struct {
244 char *eMrw_owner;
245 char *eMrw_heldin;
246 u_int eMrw_magic;
247 short eMrw_read;
248 short eMrw_write;
249 int eMrw_heldat;
250} eMrwlock_t;
251
252typedef union {
253 char _fill[KMUTEX_FILL_SZ];
254#ifdef KMUTEX_T
255 struct {
256 KMUTEX_T ipf_slk;
257 const char *ipf_lname;
258 } ipf_lkun_s;
259#endif
260 eMmutex_t ipf_emu;
261} ipfmutex_t;
262
263typedef union {
264 char _fill[KRWLOCK_FILL_SZ];
265#ifdef KRWLOCK_T
266 struct {
267 KRWLOCK_T ipf_slk;
268 const char *ipf_lname;
269 int ipf_sr;
270 int ipf_sw;
271 u_int ipf_magic;
272 } ipf_lkun_s;
273#endif
274 eMrwlock_t ipf_emu;
275} ipfrwlock_t;
276
277#define ipf_lk ipf_lkun_s.ipf_slk
278#define ipf_lname ipf_lkun_s.ipf_lname
279#define ipf_isr ipf_lkun_s.ipf_sr
280#define ipf_isw ipf_lkun_s.ipf_sw
281#define ipf_magic ipf_lkun_s.ipf_magic
282
283#if defined(__FreeBSD__) && defined(_KERNEL)
284 CTASSERT(sizeof(ipfrwlock_t) == KRWLOCK_FILL_SZ);
285 CTASSERT(sizeof(ipfmutex_t) == KMUTEX_FILL_SZ);
286#endif
287
288
289/*
290 * In a non-kernel environment, there are a lot of macros that need to be
291 * filled in to be null-ops or to point to some compatibility function,
292 * somewhere in userland.
293 */
294#ifndef _KERNEL
295typedef struct mb_s {
296 struct mb_s *mb_next;
297 char *mb_data;
298 void *mb_ifp;
299 int mb_len;
300 int mb_flags;
301 u_long mb_buf[2048];
302} mb_t;
303# undef m_next
304# define m_next mb_next
305# undef m_len
306# define m_len mb_len
307# undef m_flags
308# define m_flags mb_flags
309# undef m_data
310# define m_data mb_data
311# undef M_MCAST
312# define M_MCAST 0x01
313# undef M_BCAST
314# define M_BCAST 0x02
315# undef M_MBCAST
316# define M_MBCAST 0x04
317# define MSGDSIZE(m) msgdsize(m)
318# define M_LEN(m) (m)->mb_len
319# define M_ADJ(m,x) (m)->mb_len += x
320# define M_COPY(m) dupmbt(m)
321# define M_DUP(m) dupmbt(m)
322# define GETKTIME(x) gettimeofday((struct timeval *)(x), NULL)
323# define MTOD(m, t) ((t)(m)->mb_data)
324# define FREE_MB_T(m) freembt(m)
325# define ALLOC_MB_T(m,l) (m) = allocmbt(l)
326# define PREP_MB_T(f, m) do { \
327 (m)->mb_next = *(f)->fin_mp; \
328 *(fin)->fin_mp = (m); \
329 (f)->fin_m = (m); \
330 } while (0)
331# define SLEEP(x,y) 1;
332# define WAKEUP(x,y) ;
333# define POLLWAKEUP(y) ;
334# define IPF_PANIC(x,y) ;
335# define PANIC(x,y) ;
336# define SPL_SCHED(x) ;
337# define SPL_NET(x) ;
338# define SPL_IMP(x) ;
339# define SPL_X(x) ;
340# define KMALLOC(a,b) (a) = (b)malloc(sizeof(*a))
341# define KMALLOCS(a,b,c) (a) = (b)malloc(c)
342# define KFREE(x) free(x)
343# define KFREES(x,s) free(x)
344# define GETIFP(x, v) get_unit(x,v)
345# define GETIFMTU_4(x) 2048
346# define GETIFMTU_6(x) 2048
347# define COPYIN(a,b,c) bcopywrap((a), (b), (c))
348# define COPYOUT(a,b,c) bcopywrap((a), (b), (c))
349# define COPYDATA(m, o, l, b) bcopy(MTOD((mb_t *)m, char *) + (o), \
350 (b), (l))
351# define COPYBACK(m, o, l, b) bcopy((b), \
352 MTOD((mb_t *)m, char *) + (o), \
353 (l))
354# define UIOMOVE(a,b,c,d) ipfuiomove((caddr_t)a,b,c,d)
355extern void m_copydata(mb_t *, int, int, caddr_t);
356extern int ipfuiomove(caddr_t, int, int, struct uio *);
357extern int bcopywrap(void *, void *, size_t);
358extern mb_t *allocmbt(size_t);
359extern mb_t *dupmbt(mb_t *);
360extern void freembt(mb_t *);
361
362# define MUTEX_DESTROY(x) eMmutex_destroy(&(x)->ipf_emu, \
363 __FILE__, __LINE__)
364# define MUTEX_ENTER(x) eMmutex_enter(&(x)->ipf_emu, \
365 __FILE__, __LINE__)
366# define MUTEX_EXIT(x) eMmutex_exit(&(x)->ipf_emu, \
367 __FILE__, __LINE__)
368# define MUTEX_INIT(x,y) eMmutex_init(&(x)->ipf_emu, y, \
369 __FILE__, __LINE__)
370# define MUTEX_NUKE(x) bzero((x), sizeof(*(x)))
371
372# define MUTEX_DOWNGRADE(x) eMrwlock_downgrade(&(x)->ipf_emu, \
373 __FILE__, __LINE__)
374# define MUTEX_TRY_UPGRADE(x) eMrwlock_try_upgrade(&(x)->ipf_emu, \
375 __FILE__, __LINE__)
376# define READ_ENTER(x) eMrwlock_read_enter(&(x)->ipf_emu, \
377 __FILE__, __LINE__)
378# define RWLOCK_INIT(x, y) eMrwlock_init(&(x)->ipf_emu, y)
379# define RWLOCK_EXIT(x) eMrwlock_exit(&(x)->ipf_emu)
380# define RW_DESTROY(x) eMrwlock_destroy(&(x)->ipf_emu)
381# define WRITE_ENTER(x) eMrwlock_write_enter(&(x)->ipf_emu, \
382 __FILE__, \
383 __LINE__)
384
385# define USE_MUTEXES 1
386
387extern void eMmutex_destroy(eMmutex_t *, char *, int);
388extern void eMmutex_enter(eMmutex_t *, char *, int);
389extern void eMmutex_exit(eMmutex_t *, char *, int);
390extern void eMmutex_init(eMmutex_t *, char *, char *, int);
391extern void eMrwlock_destroy(eMrwlock_t *);
392extern void eMrwlock_exit(eMrwlock_t *);
393extern void eMrwlock_init(eMrwlock_t *, char *);
394extern void eMrwlock_read_enter(eMrwlock_t *, char *, int);
395extern void eMrwlock_write_enter(eMrwlock_t *, char *, int);
396extern void eMrwlock_downgrade(eMrwlock_t *, char *, int);
397
398#endif
399
400extern mb_t *allocmbt(size_t);
401
402#define MAX_IPV4HDR ((0xf << 2) + sizeof(struct icmp) + sizeof(ip_t) + 8)
403
404#ifndef IP_OFFMASK
405# define IP_OFFMASK 0x1fff
406#endif
407
408
409/*
410 * On BSD's use quad_t as a guarantee for getting at least a 64bit sized
411 * object.
412 */
413#if !defined(__amd64__) && !SOLARIS
414# define USE_QUAD_T
415# define U_QUAD_T unsigned long long
416# define QUAD_T long long
417#else /* BSD */
418# if !defined(U_QUAD_T)
419# define U_QUAD_T u_long
420# define QUAD_T long
421# endif
422#endif /* BSD */
423
424
425#ifdef USE_INET6
426# if defined(__NetBSD__) || defined(__FreeBSD__)
427# include <netinet/ip6.h>
428# include <netinet/icmp6.h>
429# if defined(_KERNEL)
430# include <netinet6/ip6_var.h>
431# endif
432typedef struct ip6_hdr ip6_t;
433# endif
434#endif
435
436#ifndef MAX
437# define MAX(a,b) (((a) > (b)) ? (a) : (b))
438#endif
439
440#if defined(_KERNEL)
441# if SOLARIS && !defined(INSTANCES)
442# define COPYDATA mb_copydata
443# define COPYBACK mb_copyback
444# else
445# define COPYDATA m_copydata
446# define COPYBACK m_copyback
447# endif
448# if (defined(__NetBSD_Version__) && (__NetBSD_Version__ < 105180000)) || \
449 defined(__FreeBSD__)
450# include <vm/vm.h>
451# endif
452# if NETBSD_GE_REV(105180000)
453# include <uvm/uvm_extern.h>
454# else
455# include <vm/vm_extern.h>
456extern vm_map_t kmem_map;
457# endif
458# include <sys/proc.h>
459
460# ifdef IPFILTER_M_IPFILTER
461# include <sys/malloc.h>
462MALLOC_DECLARE(M_IPFILTER);
463# define _M_IPF M_IPFILTER
464# else /* IPFILTER_M_IPFILTER */
465# ifdef M_PFIL
466# define _M_IPF M_PFIL
467# else
468# ifdef M_IPFILTER
469# define _M_IPF M_IPFILTER
470# else
471# define _M_IPF M_TEMP
472# endif /* M_IPFILTER */
473# endif /* M_PFIL */
474# endif /* IPFILTER_M_IPFILTER */
475# if !defined(KMALLOC)
476# define KMALLOC(a, b) (a) = (b)malloc(sizeof(*(a)), _M_IPF, M_NOWAIT)
477# endif
478# if !defined(KMALLOCS)
479# define KMALLOCS(a, b, c) (a) = (b)malloc((c), _M_IPF, M_NOWAIT)
480# endif
481# if !defined(KFREE)
482# define KFREE(x) free((x), _M_IPF)
483# endif
484# if !defined(KFREES)
485# define KFREES(x,s) free((x), _M_IPF)
486# endif
487# define UIOMOVE(a,b,c,d) uiomove((caddr_t)a,b,d)
488# define SLEEP(id, n) tsleep((id), PPAUSE|PCATCH, n, 0)
489# define WAKEUP(id,x) wakeup(id+x)
490# if !defined(POLLWAKEUP)
491# define POLLWAKEUP(x) selwakeup(softc->ipf_selwait+x)
492# endif
493# define GETIFP(n, v) ifunit(n)
494# define GETIFMTU_4(x) ((struct ifnet *)x)->if_mtu
495# define GETIFMTU_6(x) ((struct ifnet *)x)->if_mtu
496
497# if !defined(USE_MUTEXES) && !defined(SPL_NET)
498# define SPL_IMP(x) x = splimp()
499# define SPL_NET(x) x = splnet()
500# if !defined(SPL_SCHED)
501# define SPL_SCHED(x) x = splsched()
502# endif
503# define SPL_X(x) (void) splx(x)
504# endif /* !USE_MUTEXES */
505
506# ifndef FREE_MB_T
507# define FREE_MB_T(m) m_freem(m)
508# endif
509# ifndef ALLOC_MB_T
510# ifdef MGETHDR
511# define ALLOC_MB_T(m,l) do { \
512 MGETHDR((m), M_NOWAIT, MT_HEADER); \
513 if ((m) != NULL) { \
514 (m)->m_len = (l); \
515 (m)->m_pkthdr.len = (l); \
516 } \
517 } while (0)
518# else
519# define ALLOC_MB_T(m,l) do { \
520 MGET((m), M_NOWAIT, MT_HEADER); \
521 if ((m) != NULL) { \
522 (m)->m_len = (l); \
523 (m)->m_pkthdr.len = (l); \
524 } \
525 } while (0)
526# endif
527# endif
528# ifndef PREP_MB_T
529# define PREP_MB_T(f, m) do { \
530 mb_t *_o = *(f)->fin_mp; \
531 (m)->m_next = _o; \
532 *(fin)->fin_mp = (m); \
533 if (_o->m_flags & M_PKTHDR) { \
534 (m)->m_pkthdr.len += \
535 _o->m_pkthdr.len; \
536 (m)->m_pkthdr.rcvif = \
537 _o->m_pkthdr.rcvif; \
538 } \
539 } while (0)
540# endif
541# ifndef M_DUP
542# ifdef M_COPYALL
543# define M_DUP(m) m_dup(m, 0, M_COPYALL, 0)
544# else
545# define M_DUP(m) m_dup(m)
546# endif
547# endif
548
549# ifndef MTOD
550# define MTOD(m,t) mtod(m,t)
551# endif
552
553# ifndef COPYIN
554# define COPYIN(a,b,c) (bcopy((caddr_t)(a), (caddr_t)(b), (c)), 0)
555# define COPYOUT(a,b,c) (bcopy((caddr_t)(a), (caddr_t)(b), (c)), 0)
556# endif
557
558# if SOLARIS && !defined(KMALLOC)
559# define KMALLOC(a,b) (a) = (b)new_kmem_alloc(sizeof(*(a)), \
560 KMEM_NOSLEEP)
561# define KMALLOCS(a,b,c) (a) = (b)new_kmem_alloc((c), KMEM_NOSLEEP)
562# endif
563
564# ifndef GET_MINOR
565# define GET_MINOR(x) dev2unit(x)
566# endif
567# define PANIC(x,y) if (x) panic y
568#endif /* _KERNEL */
569
570#if !defined(IFNAME) && !defined(_KERNEL)
571# define IFNAME(x) get_ifname((struct ifnet *)x)
572#endif
573#ifndef COPYIFNAME
574# define NEED_FRGETIFNAME
575extern char *ipf_getifname(struct ifnet *, char *);
576# define COPYIFNAME(v, x, b) \
577 ipf_getifname((struct ifnet *)x, b)
578#endif
579
580#ifndef ASSERT
581# ifdef _KERNEL
582# define ASSERT(x)
583# else
584# define ASSERT(x) do { if (!(x)) abort(); } while (0)
585# endif
586#endif
587
588#ifndef BCOPYIN
589# define BCOPYIN(a,b,c) (bcopy((caddr_t)(a), (caddr_t)(b), (c)), 0)
590# define BCOPYOUT(a,b,c) (bcopy((caddr_t)(a), (caddr_t)(b), (c)), 0)
591#endif
592
593/*
594 * Because the ctype(3) posix definition, if used "safely" in code everywhere,
595 * would mean all normal code that walks through strings needed casts. Yuck.
596 */
597#define ISALNUM(x) isalnum((u_char)(x))
598#define ISALPHA(x) isalpha((u_char)(x))
599#define ISDIGIT(x) isdigit((u_char)(x))
600#define ISSPACE(x) isspace((u_char)(x))
601#define ISUPPER(x) isupper((u_char)(x))
602#define ISXDIGIT(x) isxdigit((u_char)(x))
603#define ISLOWER(x) islower((u_char)(x))
604#define TOUPPER(x) toupper((u_char)(x))
605#define TOLOWER(x) tolower((u_char)(x))
606
607/*
608 * If mutexes aren't being used, turn all the mutex functions into null-ops.
609 */
610#if !defined(USE_MUTEXES)
611# define USE_SPL 1
612# undef RW_DESTROY
613# undef MUTEX_INIT
614# undef MUTEX_NUKE
615# undef MUTEX_DESTROY
616# define MUTEX_ENTER(x) ;
617# define READ_ENTER(x) ;
618# define WRITE_ENTER(x) ;
619# define MUTEX_DOWNGRADE(x) ;
620# define MUTEX_TRY_UPGRADE(x) ;
621# define RWLOCK_INIT(x, y) ;
622# define RWLOCK_EXIT(x) ;
623# define RW_DESTROY(x) ;
624# define MUTEX_EXIT(x) ;
625# define MUTEX_INIT(x,y) ;
626# define MUTEX_DESTROY(x) ;
627# define MUTEX_NUKE(x) ;
628#endif /* !USE_MUTEXES */
629#ifndef ATOMIC_INC
630# define ATOMIC_INC(x) (x)++
631# define ATOMIC_DEC(x) (x)--
632#endif
633
634#if defined(USE_SPL) && defined(_KERNEL)
635# define SPL_INT(x) int x
636#else
637# define SPL_INT(x)
638#endif
639
640/*
641 * If there are no atomic operations for bit sizes defined, define them to all
642 * use a generic one that works for all sizes.
643 */
644#ifndef ATOMIC_INCL
645# define ATOMIC_INCL ATOMIC_INC
646# define ATOMIC_INC64 ATOMIC_INC
647# define ATOMIC_INC32 ATOMIC_INC
648# define ATOMIC_DECL ATOMIC_DEC
649# define ATOMIC_DEC64 ATOMIC_DEC
650# define ATOMIC_DEC32 ATOMIC_DEC
651#endif
652
653#ifndef HDR_T_PRIVATE
654typedef struct tcphdr tcphdr_t;
655typedef struct udphdr udphdr_t;
656#endif
657typedef struct icmp icmphdr_t;
658typedef struct ip ip_t;
659typedef struct ether_header ether_header_t;
660typedef struct tcpiphdr tcpiphdr_t;
661
662#ifndef FR_GROUPLEN
663# define FR_GROUPLEN 16
664#endif
665
666#ifndef offsetof
667# define offsetof(t,m) (size_t)((&((t *)0L)->m))
668#endif
669#ifndef stsizeof
670# define stsizeof(t,m) sizeof(((t *)0L)->m)
671#endif
672
673/*
674 * This set of macros has been brought about because on Tru64 it is not
675 * possible to easily assign or examine values in a structure that are
676 * bit fields.
677 */
678#ifndef IP_V
679# define IP_V(x) (x)->ip_v
680#endif
681#ifndef IP_V_A
682# define IP_V_A(x,y) (x)->ip_v = (y)
683#endif
684#ifndef IP_HL
685# define IP_HL(x) (x)->ip_hl
686#endif
687#ifndef IP_HL_A
688# define IP_HL_A(x,y) (x)->ip_hl = ((y) & 0xf)
689#endif
690#ifndef TCP_OFF
691# define TCP_OFF(x) (x)->th_off
692#endif
693#ifndef TCP_OFF_A
694# define TCP_OFF_A(x,y) (x)->th_off = (y)
695#endif
696#define IPMINLEN(i, h) ((i)->ip_len >= (IP_HL(i) * 4 + sizeof(struct h)))
697
698#if !SOLARIS && !defined(m_act)
699# define m_act m_nextpkt
700#endif
701
702/*
703 * Security Options for Intenet Protocol (IPSO) as defined in RFC 1108.
704 *
705 * Basic Option
706 *
707 * 00000001 - (Reserved 4)
708 * 00111101 - Top Secret
709 * 01011010 - Secret
710 * 10010110 - Confidential
711 * 01100110 - (Reserved 3)
712 * 11001100 - (Reserved 2)
713 * 10101011 - Unclassified
714 * 11110001 - (Reserved 1)
715 */
716#define IPSO_CLASS_RES4 0x01
717#define IPSO_CLASS_TOPS 0x3d
718#define IPSO_CLASS_SECR 0x5a
719#define IPSO_CLASS_CONF 0x96
720#define IPSO_CLASS_RES3 0x66
721#define IPSO_CLASS_RES2 0xcc
722#define IPSO_CLASS_UNCL 0xab
723#define IPSO_CLASS_RES1 0xf1
724
725#define IPSO_AUTH_GENSER 0x80
726#define IPSO_AUTH_ESI 0x40
727#define IPSO_AUTH_SCI 0x20
728#define IPSO_AUTH_NSA 0x10
729#define IPSO_AUTH_DOE 0x08
730#define IPSO_AUTH_UN 0x06
731#define IPSO_AUTH_FTE 0x01
732
733/*
734 * IP option #defines
735 */
736#undef IPOPT_RR
737#define IPOPT_RR 7
738#undef IPOPT_ZSU
739#define IPOPT_ZSU 10 /* ZSU */
740#undef IPOPT_MTUP
741#define IPOPT_MTUP 11 /* MTUP */
742#undef IPOPT_MTUR
743#define IPOPT_MTUR 12 /* MTUR */
744#undef IPOPT_ENCODE
745#define IPOPT_ENCODE 15 /* ENCODE */
746#undef IPOPT_TS
747#define IPOPT_TS 68
748#undef IPOPT_TR
749#define IPOPT_TR 82 /* TR */
750#undef IPOPT_SECURITY
751#define IPOPT_SECURITY 130
752#undef IPOPT_LSRR
753#define IPOPT_LSRR 131
754#undef IPOPT_E_SEC
755#define IPOPT_E_SEC 133 /* E-SEC */
756#undef IPOPT_CIPSO
757#define IPOPT_CIPSO 134 /* CIPSO */
758#undef IPOPT_SATID
759#define IPOPT_SATID 136
760#ifndef IPOPT_SID
761# define IPOPT_SID IPOPT_SATID
762#endif
763#undef IPOPT_SSRR
764#define IPOPT_SSRR 137
765#undef IPOPT_ADDEXT
766#define IPOPT_ADDEXT 147 /* ADDEXT */
767#undef IPOPT_VISA
768#define IPOPT_VISA 142 /* VISA */
769#undef IPOPT_IMITD
770#define IPOPT_IMITD 144 /* IMITD */
771#undef IPOPT_EIP
772#define IPOPT_EIP 145 /* EIP */
773#undef IPOPT_RTRALRT
774#define IPOPT_RTRALRT 148 /* RTRALRT */
775#undef IPOPT_SDB
776#define IPOPT_SDB 149
777#undef IPOPT_NSAPA
778#define IPOPT_NSAPA 150
779#undef IPOPT_DPS
780#define IPOPT_DPS 151
781#undef IPOPT_UMP
782#define IPOPT_UMP 152
783#undef IPOPT_FINN
784#define IPOPT_FINN 205 /* FINN */
785#undef IPOPT_AH
786#define IPOPT_AH 256+IPPROTO_AH
787
788#define ICMP_UNREACH_ADMIN_PROHIBIT ICMP_UNREACH_FILTER_PROHIB
789#define ICMP_UNREACH_FILTER ICMP_UNREACH_FILTER_PROHIB
790
791#ifndef IPVERSION
792# define IPVERSION 4
793#endif
794#ifndef IPOPT_MINOFF
795# define IPOPT_MINOFF 4
796#endif
797#ifndef IPOPT_COPIED
798# define IPOPT_COPIED(x) ((x)&0x80)
799#endif
800#ifndef IPOPT_EOL
801# define IPOPT_EOL 0
802#endif
803#ifndef IPOPT_NOP
804# define IPOPT_NOP 1
805#endif
806#ifndef IP_MF
807# define IP_MF ((u_short)0x2000)
808#endif
809#ifndef ETHERTYPE_IP
810# define ETHERTYPE_IP ((u_short)0x0800)
811#endif
812#ifndef TH_FIN
813# define TH_FIN 0x01
814#endif
815#ifndef TH_SYN
816# define TH_SYN 0x02
817#endif
818#ifndef TH_RST
819# define TH_RST 0x04
820#endif
821#ifndef TH_PUSH
822# define TH_PUSH 0x08
823#endif
824#ifndef TH_ACK
825# define TH_ACK 0x10
826#endif
827#ifndef TH_URG
828# define TH_URG 0x20
829#endif
830#undef TH_ACKMASK
831#define TH_ACKMASK (TH_FIN|TH_SYN|TH_RST|TH_ACK)
832
833#ifndef IPOPT_EOL
834# define IPOPT_EOL 0
835#endif
836#ifndef IPOPT_NOP
837# define IPOPT_NOP 1
838#endif
839#ifndef IPOPT_RR
840# define IPOPT_RR 7
841#endif
842#ifndef IPOPT_TS
843# define IPOPT_TS 68
844#endif
845#ifndef IPOPT_SECURITY
846# define IPOPT_SECURITY 130
847#endif
848#ifndef IPOPT_LSRR
849# define IPOPT_LSRR 131
850#endif
851#ifndef IPOPT_SATID
852# define IPOPT_SATID 136
853#endif
854#ifndef IPOPT_SSRR
855# define IPOPT_SSRR 137
856#endif
857#ifndef IPOPT_SECUR_UNCLASS
858# define IPOPT_SECUR_UNCLASS ((u_short)0x0000)
859#endif
860#ifndef IPOPT_SECUR_CONFID
861# define IPOPT_SECUR_CONFID ((u_short)0xf135)
862#endif
863#ifndef IPOPT_SECUR_EFTO
864# define IPOPT_SECUR_EFTO ((u_short)0x789a)
865#endif
866#ifndef IPOPT_SECUR_MMMM
867# define IPOPT_SECUR_MMMM ((u_short)0xbc4d)
868#endif
869#ifndef IPOPT_SECUR_RESTR
870# define IPOPT_SECUR_RESTR ((u_short)0xaf13)
871#endif
872#ifndef IPOPT_SECUR_SECRET
873# define IPOPT_SECUR_SECRET ((u_short)0xd788)
874#endif
875#ifndef IPOPT_SECUR_TOPSECRET
876# define IPOPT_SECUR_TOPSECRET ((u_short)0x6bc5)
877#endif
878#ifndef IPOPT_OLEN
879# define IPOPT_OLEN 1
880#endif
881#ifndef IPPROTO_HOPOPTS
882# define IPPROTO_HOPOPTS 0
883#endif
884#ifndef IPPROTO_IPIP
885# define IPPROTO_IPIP 4
886#endif
887#ifndef IPPROTO_ENCAP
888# define IPPROTO_ENCAP 98
889#endif
890#ifndef IPPROTO_IPV6
891# define IPPROTO_IPV6 41
892#endif
893#ifndef IPPROTO_ROUTING
894# define IPPROTO_ROUTING 43
895#endif
896#ifndef IPPROTO_FRAGMENT
897# define IPPROTO_FRAGMENT 44
898#endif
899#ifndef IPPROTO_GRE
900# define IPPROTO_GRE 47 /* GRE encaps RFC 1701 */
901#endif
902#ifndef IPPROTO_ESP
903# define IPPROTO_ESP 50
904#endif
905#ifndef IPPROTO_AH
906# define IPPROTO_AH 51
907#endif
908#ifndef IPPROTO_ICMPV6
909# define IPPROTO_ICMPV6 58
910#endif
911#ifndef IPPROTO_NONE
912# define IPPROTO_NONE 59
913#endif
914#ifndef IPPROTO_DSTOPTS
915# define IPPROTO_DSTOPTS 60
916#endif
917#ifndef IPPROTO_MOBILITY
918# define IPPROTO_MOBILITY 135
919#endif
920
921#ifndef ICMP_ROUTERADVERT
922# define ICMP_ROUTERADVERT 9
923#endif
924#ifndef ICMP_ROUTERSOLICIT
925# define ICMP_ROUTERSOLICIT 10
926#endif
927#ifndef ICMP6_DST_UNREACH
928# define ICMP6_DST_UNREACH 1
929#endif
930#ifndef ICMP6_PACKET_TOO_BIG
931# define ICMP6_PACKET_TOO_BIG 2
932#endif
933#ifndef ICMP6_TIME_EXCEEDED
934# define ICMP6_TIME_EXCEEDED 3
935#endif
936#ifndef ICMP6_PARAM_PROB
937# define ICMP6_PARAM_PROB 4
938#endif
939
940#ifndef ICMP6_ECHO_REQUEST
941# define ICMP6_ECHO_REQUEST 128
942#endif
943#ifndef ICMP6_ECHO_REPLY
944# define ICMP6_ECHO_REPLY 129
945#endif
946#ifndef ICMP6_MEMBERSHIP_QUERY
947# define ICMP6_MEMBERSHIP_QUERY 130
948#endif
949#ifndef MLD6_LISTENER_QUERY
950# define MLD6_LISTENER_QUERY 130
951#endif
952#ifndef ICMP6_MEMBERSHIP_REPORT
953# define ICMP6_MEMBERSHIP_REPORT 131
954#endif
955#ifndef MLD6_LISTENER_REPORT
956# define MLD6_LISTENER_REPORT 131
957#endif
958#ifndef ICMP6_MEMBERSHIP_REDUCTION
959# define ICMP6_MEMBERSHIP_REDUCTION 132
960#endif
961#ifndef MLD6_LISTENER_DONE
962# define MLD6_LISTENER_DONE 132
963#endif
964#ifndef ND_ROUTER_SOLICIT
965# define ND_ROUTER_SOLICIT 133
966#endif
967#ifndef ND_ROUTER_ADVERT
968# define ND_ROUTER_ADVERT 134
969#endif
970#ifndef ND_NEIGHBOR_SOLICIT
971# define ND_NEIGHBOR_SOLICIT 135
972#endif
973#ifndef ND_NEIGHBOR_ADVERT
974# define ND_NEIGHBOR_ADVERT 136
975#endif
976#ifndef ND_REDIRECT
977# define ND_REDIRECT 137
978#endif
979#ifndef ICMP6_ROUTER_RENUMBERING
980# define ICMP6_ROUTER_RENUMBERING 138
981#endif
982#ifndef ICMP6_WRUREQUEST
983# define ICMP6_WRUREQUEST 139
984#endif
985#ifndef ICMP6_WRUREPLY
986# define ICMP6_WRUREPLY 140
987#endif
988#ifndef ICMP6_FQDN_QUERY
989# define ICMP6_FQDN_QUERY 139
990#endif
991#ifndef ICMP6_FQDN_REPLY
992# define ICMP6_FQDN_REPLY 140
993#endif
994#ifndef ICMP6_NI_QUERY
995# define ICMP6_NI_QUERY 139
996#endif
997#ifndef ICMP6_NI_REPLY
998# define ICMP6_NI_REPLY 140
999#endif
1000#ifndef MLD6_MTRACE_RESP
1001# define MLD6_MTRACE_RESP 200
1002#endif
1003#ifndef MLD6_MTRACE
1004# define MLD6_MTRACE 201
1005#endif
1006#ifndef ICMP6_HADISCOV_REQUEST
1007# define ICMP6_HADISCOV_REQUEST 202
1008#endif
1009#ifndef ICMP6_HADISCOV_REPLY
1010# define ICMP6_HADISCOV_REPLY 203
1011#endif
1012#ifndef ICMP6_MOBILEPREFIX_SOLICIT
1013# define ICMP6_MOBILEPREFIX_SOLICIT 204
1014#endif
1015#ifndef ICMP6_MOBILEPREFIX_ADVERT
1016# define ICMP6_MOBILEPREFIX_ADVERT 205
1017#endif
1018#ifndef ICMP6_MAXTYPE
1019# define ICMP6_MAXTYPE 205
1020#endif
1021
1022#ifndef ICMP6_DST_UNREACH_NOROUTE
1023# define ICMP6_DST_UNREACH_NOROUTE 0
1024#endif
1025#ifndef ICMP6_DST_UNREACH_ADMIN
1026# define ICMP6_DST_UNREACH_ADMIN 1
1027#endif
1028#ifndef ICMP6_DST_UNREACH_NOTNEIGHBOR
1029# define ICMP6_DST_UNREACH_NOTNEIGHBOR 2
1030#endif
1031#ifndef ICMP6_DST_UNREACH_BEYONDSCOPE
1032# define ICMP6_DST_UNREACH_BEYONDSCOPE 2
1033#endif
1034#ifndef ICMP6_DST_UNREACH_ADDR
1035# define ICMP6_DST_UNREACH_ADDR 3
1036#endif
1037#ifndef ICMP6_DST_UNREACH_NOPORT
1038# define ICMP6_DST_UNREACH_NOPORT 4
1039#endif
1040#ifndef ICMP6_TIME_EXCEED_TRANSIT
1041# define ICMP6_TIME_EXCEED_TRANSIT 0
1042#endif
1043#ifndef ICMP6_TIME_EXCEED_REASSEMBLY
1044# define ICMP6_TIME_EXCEED_REASSEMBLY 1
1045#endif
1046
1047#ifndef ICMP6_NI_SUCCESS
1048# define ICMP6_NI_SUCCESS 0
1049#endif
1050#ifndef ICMP6_NI_REFUSED
1051# define ICMP6_NI_REFUSED 1
1052#endif
1053#ifndef ICMP6_NI_UNKNOWN
1054# define ICMP6_NI_UNKNOWN 2
1055#endif
1056
1057#ifndef ICMP6_ROUTER_RENUMBERING_COMMAND
1058# define ICMP6_ROUTER_RENUMBERING_COMMAND 0
1059#endif
1060#ifndef ICMP6_ROUTER_RENUMBERING_RESULT
1061# define ICMP6_ROUTER_RENUMBERING_RESULT 1
1062#endif
1063#ifndef ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET
1064# define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255
1065#endif
1066
1067#ifndef ICMP6_PARAMPROB_HEADER
1068# define ICMP6_PARAMPROB_HEADER 0
1069#endif
1070#ifndef ICMP6_PARAMPROB_NEXTHEADER
1071# define ICMP6_PARAMPROB_NEXTHEADER 1
1072#endif
1073#ifndef ICMP6_PARAMPROB_OPTION
1074# define ICMP6_PARAMPROB_OPTION 2
1075#endif
1076
1077#ifndef ICMP6_NI_SUBJ_IPV6
1078# define ICMP6_NI_SUBJ_IPV6 0
1079#endif
1080#ifndef ICMP6_NI_SUBJ_FQDN
1081# define ICMP6_NI_SUBJ_FQDN 1
1082#endif
1083#ifndef ICMP6_NI_SUBJ_IPV4
1084# define ICMP6_NI_SUBJ_IPV4 2
1085#endif
1086
1087#ifndef MLD_MTRACE_RESP
1088# define MLD_MTRACE_RESP 200
1089#endif
1090#ifndef MLD_MTRACE
1091# define MLD_MTRACE 201
1092#endif
1093#ifndef MLD6_MTRACE_RESP
1094# define MLD6_MTRACE_RESP MLD_MTRACE_RESP
1095#endif
1096#ifndef MLD6_MTRACE
1097# define MLD6_MTRACE MLD_MTRACE
1098#endif
1099
1100#if !defined(IPV6_FLOWINFO_MASK)
1101# if (BYTE_ORDER == BIG_ENDIAN) || defined(_BIG_ENDIAN)
1102# define IPV6_FLOWINFO_MASK 0x0fffffff /* flow info (28 bits) */
1103# else
1104# if(BYTE_ORDER == LITTLE_ENDIAN) || !defined(_BIG_ENDIAN)
1105# define IPV6_FLOWINFO_MASK 0xffffff0f /* flow info (28 bits) */
1106# endif /* LITTLE_ENDIAN */
1107# endif
1108#endif
1109#if !defined(IPV6_FLOWLABEL_MASK)
1110# if (BYTE_ORDER == BIG_ENDIAN) || defined(_BIG_ENDIAN)
1111# define IPV6_FLOWLABEL_MASK 0x000fffff /* flow label (20 bits) */
1112# else
1113# if (BYTE_ORDER == LITTLE_ENDIAN) || !defined(_BIG_ENDIAN)
1114# define IPV6_FLOWLABEL_MASK 0xffff0f00 /* flow label (20 bits) */
1115# endif /* LITTLE_ENDIAN */
1116# endif
1117#endif
1118
1119/*
1120 * ECN is a new addition to TCP - RFC 2481
1121 */
1122#ifndef TH_ECN
1123# define TH_ECN 0x40
1124#endif
1125#ifndef TH_CWR
1126# define TH_CWR 0x80
1127#endif
1128#ifndef TH_AE
1129# define TH_AE 0x100
1130#endif
1131#define TH_ECNALL (TH_ECN|TH_CWR|TH_AE)
1132
1133/*
1134 * TCP States
1135 */
1136#define IPF_TCPS_LISTEN 0 /* listening for connection */
1137#define IPF_TCPS_SYN_SENT 1 /* active, have sent syn */
1138#define IPF_TCPS_SYN_RECEIVED 2 /* have send and received syn */
1139#define IPF_TCPS_HALF_ESTAB 3 /* for connections not fully "up" */
1140/* states < IPF_TCPS_ESTABLISHED are those where connections not established */
1141#define IPF_TCPS_ESTABLISHED 4 /* established */
1142#define IPF_TCPS_CLOSE_WAIT 5 /* rcvd fin, waiting for close */
1143/* states > IPF_TCPS_CLOSE_WAIT are those where user has closed */
1144#define IPF_TCPS_FIN_WAIT_1 6 /* have closed, sent fin */
1145#define IPF_TCPS_CLOSING 7 /* closed xchd FIN; await FIN ACK */
1146#define IPF_TCPS_LAST_ACK 8 /* had fin and close; await FIN ACK */
1147/* states > IPF_TCPS_CLOSE_WAIT && < IPF_TCPS_FIN_WAIT_2 await ACK of FIN */
1148#define IPF_TCPS_FIN_WAIT_2 9 /* have closed, fin is acked */
1149#define IPF_TCPS_TIME_WAIT 10 /* in 2*msl quiet wait after close */
1150#define IPF_TCPS_CLOSED 11 /* closed */
1151#define IPF_TCP_NSTATES 12
1152
1153#define TCP_MSL 120
1154
1155#undef ICMP_MAX_UNREACH
1156#define ICMP_MAX_UNREACH 14
1157#undef ICMP_MAXTYPE
1158#define ICMP_MAXTYPE 18
1159
1160#ifndef LOG_FTP
1161# define LOG_FTP (11<<3)
1162#endif
1163#ifndef LOG_AUTHPRIV
1164# define LOG_AUTHPRIV (10<<3)
1165#endif
1166#ifndef LOG_AUDIT
1167# define LOG_AUDIT (13<<3)
1168#endif
1169#ifndef LOG_NTP
1170# define LOG_NTP (12<<3)
1171#endif
1172#ifndef LOG_SECURITY
1173# define LOG_SECURITY (13<<3)
1174#endif
1175#ifndef LOG_LFMT
1176# define LOG_LFMT (14<<3)
1177#endif
1178#ifndef LOG_CONSOLE
1179# define LOG_CONSOLE (14<<3)
1180#endif
1181
1182/*
1183 * ICMP error replies have an IP header (20 bytes), 8 bytes of ICMP data,
1184 * another IP header and then 64 bits of data, totalling 56. Of course,
1185 * the last 64 bits is dependent on that being available.
1186 */
1187#define ICMPERR_ICMPHLEN 8
1188#define ICMPERR_IPICMPHLEN (20 + 8)
1189#define ICMPERR_MINPKTLEN (20 + 8 + 20)
1190#define ICMPERR_MAXPKTLEN (20 + 8 + 20 + 8)
1191#define ICMP6ERR_MINPKTLEN (40 + 8)
1192#define ICMP6ERR_IPICMPHLEN (40 + 8 + 40)
1193
1194#ifndef MIN
1195# define MIN(a,b) (((a)<(b))?(a):(b))
1196#endif
1197
1198#ifdef RESCUE
1199# undef IPFILTER_BPF
1200#endif
1201
1202#ifdef IPF_DEBUG
1203# define DPRINT(x) printf x
1204#else
1205# define DPRINT(x)
1206#endif
1207
1208#if defined(DTRACE_PROBE) && defined(_KERNEL)
1209# define DT(_n) DTRACE_PROBE(_n)
1210# define DT1(_n,_a,_b) DTRACE_PROBE1(_n,_a,_b)
1211# define DT2(_n,_a,_b,_c,_d) DTRACE_PROBE2(_n,_a,_b,_c,_d)
1212# define DT3(_n,_a,_b,_c,_d,_e,_f) \
1213 DTRACE_PROBE3(_n,_a,_b,_c,_d,_e,_f)
1214# define DT4(_n,_a,_b,_c,_d,_e,_f,_g,_h) \
1215 DTRACE_PROBE4(_n,_a,_b,_c,_d,_e,_f,_g,_h)
1216# define DT5(_n,_a,_b,_c,_d,_e,_f,_g,_h,_i,_j) \
1217 DTRACE_PROBE5(_n,_a,_b,_c,_d,_e,_f,_g,_h,_i,_j)
1218#else
1219# define DT(_n)
1220# define DT1(_n,_a,_b)
1221# define DT2(_n,_a,_b,_c,_d)
1222# define DT3(_n,_a,_b,_c,_d,_e,_f)
1223# define DT4(_n,_a,_b,_c,_d,_e,_f,_g,_h)
1224# define DT5(_n,_a,_b,_c,_d,_e,_f,_g,_h,_i,_j)
1225#endif
1226
1227struct ip6_routing {
1228 u_char ip6r_nxt; /* next header */
1229 u_char ip6r_len; /* length in units of 8 octets */
1230 u_char ip6r_type; /* always zero */
1231 u_char ip6r_segleft; /* segments left */
1232 u_32_t ip6r_reserved; /* reserved field */
1233};
1234
1235#endif /* __IP_COMPAT_H__ */