xref: /illumos-gate/usr/src/uts/common/inet/ipf/ip_log.c (revision ab25eeb551a4be927a4b6ae2cf8aff7ed17decb4)
17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate  * Copyright (C) 1997-2003 by Darren Reed.
37c478bd9Sstevel@tonic-gate  *
47c478bd9Sstevel@tonic-gate  * See the IPFILTER.LICENCE file for details on licencing.
57c478bd9Sstevel@tonic-gate  *
6*ab25eeb5Syz  * $Id: ip_log.c,v 2.75.2.7 2005/06/11 07:47:44 darrenr Exp $
77c478bd9Sstevel@tonic-gate  *
8*ab25eeb5Syz  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
97c478bd9Sstevel@tonic-gate  * Use is subject to license terms.
107c478bd9Sstevel@tonic-gate  */
117c478bd9Sstevel@tonic-gate 
127c478bd9Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
137c478bd9Sstevel@tonic-gate 
147c478bd9Sstevel@tonic-gate #include <sys/param.h>
157c478bd9Sstevel@tonic-gate #if defined(KERNEL) || defined(_KERNEL)
167c478bd9Sstevel@tonic-gate # undef KERNEL
177c478bd9Sstevel@tonic-gate # undef _KERNEL
187c478bd9Sstevel@tonic-gate # define        KERNEL	1
197c478bd9Sstevel@tonic-gate # define        _KERNEL	1
207c478bd9Sstevel@tonic-gate #endif
217c478bd9Sstevel@tonic-gate #if defined(__NetBSD__) && (NetBSD >= 199905) && !defined(IPFILTER_LKM) && \
227c478bd9Sstevel@tonic-gate     defined(_KERNEL)
237c478bd9Sstevel@tonic-gate # include "opt_ipfilter_log.h"
247c478bd9Sstevel@tonic-gate #endif
25*ab25eeb5Syz #if defined(__FreeBSD__) && !defined(IPFILTER_LKM)
26*ab25eeb5Syz # if defined(_KERNEL)
27*ab25eeb5Syz #  if defined(__FreeBSD_version) && (__FreeBSD_version >= 300000)
28*ab25eeb5Syz #   include "opt_ipfilter.h"
297c478bd9Sstevel@tonic-gate #  endif
30*ab25eeb5Syz # else
31*ab25eeb5Syz #  include <osreldate.h>
327c478bd9Sstevel@tonic-gate # endif
337c478bd9Sstevel@tonic-gate #endif
34*ab25eeb5Syz #ifndef SOLARIS
35*ab25eeb5Syz # define SOLARIS (defined(sun) && (defined(__svr4__) || defined(__SVR4)))
36*ab25eeb5Syz #endif
37*ab25eeb5Syz #include <sys/errno.h>
38*ab25eeb5Syz #include <sys/types.h>
39*ab25eeb5Syz #include <sys/file.h>
40*ab25eeb5Syz #ifndef _KERNEL
41*ab25eeb5Syz # include <stdio.h>
42*ab25eeb5Syz # include <string.h>
43*ab25eeb5Syz # include <stdlib.h>
44*ab25eeb5Syz # include <ctype.h>
45*ab25eeb5Syz # define _KERNEL
46*ab25eeb5Syz # define KERNEL
477c478bd9Sstevel@tonic-gate # ifdef __OpenBSD__
487c478bd9Sstevel@tonic-gate struct file;
497c478bd9Sstevel@tonic-gate # endif
50*ab25eeb5Syz # include <sys/uio.h>
51*ab25eeb5Syz # undef _KERNEL
52*ab25eeb5Syz # undef KERNEL
53*ab25eeb5Syz #endif
54*ab25eeb5Syz #if __FreeBSD_version >= 220000 && defined(_KERNEL)
55*ab25eeb5Syz # include <sys/fcntl.h>
56*ab25eeb5Syz # include <sys/filio.h>
57*ab25eeb5Syz #else
58*ab25eeb5Syz # include <sys/ioctl.h>
59*ab25eeb5Syz #endif
60*ab25eeb5Syz #include <sys/time.h>
61*ab25eeb5Syz #if defined(_KERNEL)
62*ab25eeb5Syz # include <sys/systm.h>
63*ab25eeb5Syz # if defined(NetBSD) && (__NetBSD_Version__ >= 104000000)
64*ab25eeb5Syz #  include <sys/proc.h>
657c478bd9Sstevel@tonic-gate # endif
66*ab25eeb5Syz #endif /* _KERNEL */
67*ab25eeb5Syz #if !SOLARIS && !defined(__hpux) && !defined(linux)
68*ab25eeb5Syz # if (NetBSD > 199609) || (OpenBSD > 199603) || (__FreeBSD_version >= 300000)
69*ab25eeb5Syz #  include <sys/dirent.h>
707c478bd9Sstevel@tonic-gate # else
71*ab25eeb5Syz #  include <sys/dir.h>
727c478bd9Sstevel@tonic-gate # endif
73*ab25eeb5Syz # include <sys/mbuf.h>
74*ab25eeb5Syz #else
75*ab25eeb5Syz # if !defined(__hpux) && defined(_KERNEL)
76*ab25eeb5Syz #  include <sys/filio.h>
77*ab25eeb5Syz #  include <sys/cred.h>
78*ab25eeb5Syz #  include <sys/ddi.h>
79*ab25eeb5Syz #  include <sys/sunddi.h>
80*ab25eeb5Syz #  include <sys/ksynch.h>
81*ab25eeb5Syz #  include <sys/kmem.h>
82*ab25eeb5Syz #  include <sys/mkdev.h>
83*ab25eeb5Syz #  include <sys/dditypes.h>
84*ab25eeb5Syz #  include <sys/cmn_err.h>
85*ab25eeb5Syz # endif /* !__hpux */
86*ab25eeb5Syz #endif /* !SOLARIS && !__hpux */
87*ab25eeb5Syz #if !defined(linux)
887c478bd9Sstevel@tonic-gate # include <sys/protosw.h>
89*ab25eeb5Syz #endif
90*ab25eeb5Syz #include <sys/socket.h>
917c478bd9Sstevel@tonic-gate 
92*ab25eeb5Syz #include <net/if.h>
93*ab25eeb5Syz #ifdef sun
94*ab25eeb5Syz # include <net/af.h>
95*ab25eeb5Syz #endif
96*ab25eeb5Syz #if __FreeBSD_version >= 300000
97*ab25eeb5Syz # include <net/if_var.h>
98*ab25eeb5Syz #endif
99*ab25eeb5Syz #include <net/route.h>
100*ab25eeb5Syz #include <netinet/in.h>
101*ab25eeb5Syz #ifdef __sgi
102*ab25eeb5Syz # include <sys/ddi.h>
103*ab25eeb5Syz # ifdef IFF_DRVRLOCK /* IRIX6 */
104*ab25eeb5Syz #  include <sys/hashing.h>
1057c478bd9Sstevel@tonic-gate # endif
106*ab25eeb5Syz #endif
107*ab25eeb5Syz #if !defined(__hpux) && !defined(linux) && \
108*ab25eeb5Syz     !(defined(__sgi) && !defined(IFF_DRVRLOCK)) /*IRIX<6*/
109*ab25eeb5Syz # include <netinet/in_var.h>
110*ab25eeb5Syz #endif
111*ab25eeb5Syz #include <netinet/in_systm.h>
112*ab25eeb5Syz #include <netinet/ip.h>
113*ab25eeb5Syz #include <netinet/tcp.h>
114*ab25eeb5Syz #include <netinet/udp.h>
115*ab25eeb5Syz #include <netinet/ip_icmp.h>
116*ab25eeb5Syz #ifdef USE_INET6
117*ab25eeb5Syz # include <netinet/icmp6.h>
118*ab25eeb5Syz #endif
119*ab25eeb5Syz #if !defined(linux)
1207c478bd9Sstevel@tonic-gate # include <netinet/ip_var.h>
1217c478bd9Sstevel@tonic-gate #endif
122*ab25eeb5Syz #ifndef _KERNEL
123*ab25eeb5Syz # include <syslog.h>
124*ab25eeb5Syz #endif
125*ab25eeb5Syz #include "netinet/ip_compat.h"
126*ab25eeb5Syz #include <netinet/tcpip.h>
127*ab25eeb5Syz #include "netinet/ip_fil.h"
128*ab25eeb5Syz #include "netinet/ip_nat.h"
129*ab25eeb5Syz #include "netinet/ip_frag.h"
130*ab25eeb5Syz #include "netinet/ip_state.h"
131*ab25eeb5Syz #include "netinet/ip_auth.h"
132*ab25eeb5Syz #if (__FreeBSD_version >= 300000) || defined(__NetBSD__)
133*ab25eeb5Syz # include <sys/malloc.h>
134*ab25eeb5Syz #endif
135*ab25eeb5Syz /* END OF INCLUDES */
1367c478bd9Sstevel@tonic-gate 
137*ab25eeb5Syz #ifdef	IPFILTER_LOG
1387c478bd9Sstevel@tonic-gate 
1397c478bd9Sstevel@tonic-gate # if defined(IPL_SELECT)
140*ab25eeb5Syz #  include	<machine/sys/user.h>
141*ab25eeb5Syz #  include	<sys/kthread_iface.h>
142*ab25eeb5Syz #  define	READ_COLLISION	0x001
1437c478bd9Sstevel@tonic-gate 
144*ab25eeb5Syz iplog_select_t	iplog_ss[IPL_LOGMAX+1];
1457c478bd9Sstevel@tonic-gate 
1467c478bd9Sstevel@tonic-gate extern int selwait;
1477c478bd9Sstevel@tonic-gate # endif /* IPL_SELECT */
1487c478bd9Sstevel@tonic-gate 
149*ab25eeb5Syz # if defined(linux) && defined(_KERNEL)
150*ab25eeb5Syz wait_queue_head_t	iplh_linux[IPL_LOGSIZE];
151*ab25eeb5Syz # endif
152*ab25eeb5Syz # if SOLARIS
1537c478bd9Sstevel@tonic-gate extern	kcondvar_t	iplwait;
1547c478bd9Sstevel@tonic-gate # endif
1557c478bd9Sstevel@tonic-gate 
1567c478bd9Sstevel@tonic-gate iplog_t	**iplh[IPL_LOGSIZE], *iplt[IPL_LOGSIZE], *ipll[IPL_LOGSIZE];
1577c478bd9Sstevel@tonic-gate int	iplused[IPL_LOGSIZE];
1587c478bd9Sstevel@tonic-gate static fr_info_t	iplcrc[IPL_LOGSIZE];
1597c478bd9Sstevel@tonic-gate int	ipl_suppress = 1;
1607c478bd9Sstevel@tonic-gate int	ipl_buffer_sz;
1617c478bd9Sstevel@tonic-gate int	ipl_logmax = IPL_LOGMAX;
1627c478bd9Sstevel@tonic-gate int	ipl_logall = 0;
1637c478bd9Sstevel@tonic-gate int	ipl_log_init = 0;
164*ab25eeb5Syz int	ipl_logsize = IPFILTER_LOGSIZE;
165*ab25eeb5Syz int	ipl_magic[IPL_LOGSIZE] = { IPL_MAGIC, IPL_MAGIC_NAT, IPL_MAGIC_STATE,
166*ab25eeb5Syz 				   IPL_MAGIC, IPL_MAGIC, IPL_MAGIC,
167*ab25eeb5Syz 				   IPL_MAGIC, IPL_MAGIC };
1687c478bd9Sstevel@tonic-gate 
1697c478bd9Sstevel@tonic-gate 
1707c478bd9Sstevel@tonic-gate /* ------------------------------------------------------------------------ */
1717c478bd9Sstevel@tonic-gate /* Function:    fr_loginit                                                  */
1727c478bd9Sstevel@tonic-gate /* Returns:     int - 0 == success (always returned)                        */
1737c478bd9Sstevel@tonic-gate /* Parameters:  Nil                                                         */
1747c478bd9Sstevel@tonic-gate /*                                                                          */
1757c478bd9Sstevel@tonic-gate /* Initialise log buffers & pointers.  Also iniialised the CRC to a local   */
1767c478bd9Sstevel@tonic-gate /* secret for use in calculating the "last log checksum".                   */
1777c478bd9Sstevel@tonic-gate /* ------------------------------------------------------------------------ */
1787c478bd9Sstevel@tonic-gate int fr_loginit()
1797c478bd9Sstevel@tonic-gate {
1807c478bd9Sstevel@tonic-gate 	int	i;
1817c478bd9Sstevel@tonic-gate 
1827c478bd9Sstevel@tonic-gate 	for (i = IPL_LOGMAX; i >= 0; i--) {
1837c478bd9Sstevel@tonic-gate 		iplt[i] = NULL;
1847c478bd9Sstevel@tonic-gate 		ipll[i] = NULL;
1857c478bd9Sstevel@tonic-gate 		iplh[i] = &iplt[i];
1867c478bd9Sstevel@tonic-gate 		iplused[i] = 0;
1877c478bd9Sstevel@tonic-gate 		bzero((char *)&iplcrc[i], sizeof(iplcrc[i]));
1887c478bd9Sstevel@tonic-gate # ifdef	IPL_SELECT
1897c478bd9Sstevel@tonic-gate 		iplog_ss[i].read_waiter = 0;
1907c478bd9Sstevel@tonic-gate 		iplog_ss[i].state = 0;
191*ab25eeb5Syz # endif
192*ab25eeb5Syz # if defined(linux) && defined(_KERNEL)
193*ab25eeb5Syz 		init_waitqueue_head(iplh_linux + i);
1947c478bd9Sstevel@tonic-gate # endif
1957c478bd9Sstevel@tonic-gate 	}
1967c478bd9Sstevel@tonic-gate 
1977c478bd9Sstevel@tonic-gate # if SOLARIS && defined(_KERNEL)
1987c478bd9Sstevel@tonic-gate 	cv_init(&iplwait, "ipl condvar", CV_DRIVER, NULL);
1997c478bd9Sstevel@tonic-gate # endif
2007c478bd9Sstevel@tonic-gate 	MUTEX_INIT(&ipl_mutex, "ipf log mutex");
2017c478bd9Sstevel@tonic-gate 
2027c478bd9Sstevel@tonic-gate 	ipl_log_init = 1;
2037c478bd9Sstevel@tonic-gate 
2047c478bd9Sstevel@tonic-gate 	return 0;
2057c478bd9Sstevel@tonic-gate }
2067c478bd9Sstevel@tonic-gate 
2077c478bd9Sstevel@tonic-gate 
2087c478bd9Sstevel@tonic-gate /* ------------------------------------------------------------------------ */
2097c478bd9Sstevel@tonic-gate /* Function:    fr_logunload                                                */
2107c478bd9Sstevel@tonic-gate /* Returns:     Nil                                                         */
2117c478bd9Sstevel@tonic-gate /* Parameters:  Nil                                                         */
2127c478bd9Sstevel@tonic-gate /*                                                                          */
2137c478bd9Sstevel@tonic-gate /* Clean up any log data that has accumulated without being read.           */
2147c478bd9Sstevel@tonic-gate /* ------------------------------------------------------------------------ */
2157c478bd9Sstevel@tonic-gate void fr_logunload()
2167c478bd9Sstevel@tonic-gate {
2177c478bd9Sstevel@tonic-gate 	int i;
2187c478bd9Sstevel@tonic-gate 
2197c478bd9Sstevel@tonic-gate 	if (ipl_log_init == 0)
2207c478bd9Sstevel@tonic-gate 		return;
2217c478bd9Sstevel@tonic-gate 
2227c478bd9Sstevel@tonic-gate 	for (i = IPL_LOGMAX; i >= 0; i--)
2237c478bd9Sstevel@tonic-gate 		(void) ipflog_clear(i);
2247c478bd9Sstevel@tonic-gate 
2257c478bd9Sstevel@tonic-gate # if SOLARIS && defined(_KERNEL)
2267c478bd9Sstevel@tonic-gate 	cv_destroy(&iplwait);
2277c478bd9Sstevel@tonic-gate # endif
2287c478bd9Sstevel@tonic-gate 	MUTEX_DESTROY(&ipl_mutex);
2297c478bd9Sstevel@tonic-gate 
2307c478bd9Sstevel@tonic-gate 	ipl_log_init = 0;
2317c478bd9Sstevel@tonic-gate }
2327c478bd9Sstevel@tonic-gate 
2337c478bd9Sstevel@tonic-gate 
2347c478bd9Sstevel@tonic-gate /* ------------------------------------------------------------------------ */
2357c478bd9Sstevel@tonic-gate /* Function:    ipflog                                                      */
2367c478bd9Sstevel@tonic-gate /* Returns:     int - 0 == success, -1 == failure                           */
2377c478bd9Sstevel@tonic-gate /* Parameters:  fin(I)   - pointer to packet information                    */
2387c478bd9Sstevel@tonic-gate /*              flags(I) - flags from filter rules                          */
2397c478bd9Sstevel@tonic-gate /*                                                                          */
2407c478bd9Sstevel@tonic-gate /* Create a log record for a packet given that it has been triggered by a   */
2417c478bd9Sstevel@tonic-gate /* rule (or the default setting).  Calculate the transport protocol header  */
2427c478bd9Sstevel@tonic-gate /* size using predetermined size of a couple of popular protocols and thus  */
2437c478bd9Sstevel@tonic-gate /* how much data to copy into the log, including part of the data body if   */
2447c478bd9Sstevel@tonic-gate /* requested.                                                               */
2457c478bd9Sstevel@tonic-gate /* ------------------------------------------------------------------------ */
2467c478bd9Sstevel@tonic-gate int ipflog(fin, flags)
2477c478bd9Sstevel@tonic-gate fr_info_t *fin;
2487c478bd9Sstevel@tonic-gate u_int flags;
2497c478bd9Sstevel@tonic-gate {
2507c478bd9Sstevel@tonic-gate 	register size_t hlen;
2517c478bd9Sstevel@tonic-gate 	int types[2], mlen;
2527c478bd9Sstevel@tonic-gate 	size_t sizes[2];
2537c478bd9Sstevel@tonic-gate 	void *ptrs[2];
2547c478bd9Sstevel@tonic-gate 	ipflog_t ipfl;
2557c478bd9Sstevel@tonic-gate 	u_char p;
2567c478bd9Sstevel@tonic-gate 	mb_t *m;
257*ab25eeb5Syz # if (SOLARIS || defined(__hpux)) && defined(_KERNEL)
2587c478bd9Sstevel@tonic-gate #  ifndef IRE_ILL_CN
259*ab25eeb5Syz 	qif_t *ifp;
2607c478bd9Sstevel@tonic-gate #  else
2617c478bd9Sstevel@tonic-gate 	s_ill_t *ifp;
2627c478bd9Sstevel@tonic-gate #  endif /* IRE_ILL_CN */
2637c478bd9Sstevel@tonic-gate # else
2647c478bd9Sstevel@tonic-gate 	struct ifnet *ifp;
265*ab25eeb5Syz # endif /* SOLARIS || __hpux */
2667c478bd9Sstevel@tonic-gate 
267*ab25eeb5Syz 	ipfl.fl_nattag.ipt_num[0] = 0;
2687c478bd9Sstevel@tonic-gate 	m = fin->fin_m;
2697c478bd9Sstevel@tonic-gate 	ifp = fin->fin_ifp;
2707c478bd9Sstevel@tonic-gate 	hlen = fin->fin_hlen;
2717c478bd9Sstevel@tonic-gate 	/*
2727c478bd9Sstevel@tonic-gate 	 * calculate header size.
2737c478bd9Sstevel@tonic-gate 	 */
2747c478bd9Sstevel@tonic-gate 	if (fin->fin_off == 0) {
2757c478bd9Sstevel@tonic-gate 		p = fin->fin_fi.fi_p;
2767c478bd9Sstevel@tonic-gate 		if (p == IPPROTO_TCP)
2777c478bd9Sstevel@tonic-gate 			hlen += MIN(sizeof(tcphdr_t), fin->fin_dlen);
2787c478bd9Sstevel@tonic-gate 		else if (p == IPPROTO_UDP)
2797c478bd9Sstevel@tonic-gate 			hlen += MIN(sizeof(udphdr_t), fin->fin_dlen);
2807c478bd9Sstevel@tonic-gate 		else if (p == IPPROTO_ICMP) {
2817c478bd9Sstevel@tonic-gate 			struct icmp *icmp;
2827c478bd9Sstevel@tonic-gate 
2837c478bd9Sstevel@tonic-gate 			icmp = (struct icmp *)fin->fin_dp;
284*ab25eeb5Syz 
2857c478bd9Sstevel@tonic-gate 			/*
2867c478bd9Sstevel@tonic-gate 			 * For ICMP, if the packet is an error packet, also
2877c478bd9Sstevel@tonic-gate 			 * include the information about the packet which
2887c478bd9Sstevel@tonic-gate 			 * caused the error.
2897c478bd9Sstevel@tonic-gate 			 */
2907c478bd9Sstevel@tonic-gate 			switch (icmp->icmp_type)
2917c478bd9Sstevel@tonic-gate 			{
2927c478bd9Sstevel@tonic-gate 			case ICMP_UNREACH :
2937c478bd9Sstevel@tonic-gate 			case ICMP_SOURCEQUENCH :
2947c478bd9Sstevel@tonic-gate 			case ICMP_REDIRECT :
2957c478bd9Sstevel@tonic-gate 			case ICMP_TIMXCEED :
2967c478bd9Sstevel@tonic-gate 			case ICMP_PARAMPROB :
2977c478bd9Sstevel@tonic-gate 				hlen += MIN(sizeof(struct icmp) + 8,
2987c478bd9Sstevel@tonic-gate 					    fin->fin_dlen);
2997c478bd9Sstevel@tonic-gate 				break;
3007c478bd9Sstevel@tonic-gate 			default :
3017c478bd9Sstevel@tonic-gate 				hlen += MIN(sizeof(struct icmp),
3027c478bd9Sstevel@tonic-gate 					    fin->fin_dlen);
3037c478bd9Sstevel@tonic-gate 				break;
3047c478bd9Sstevel@tonic-gate 			}
3057c478bd9Sstevel@tonic-gate 		}
3067c478bd9Sstevel@tonic-gate # ifdef USE_INET6
3077c478bd9Sstevel@tonic-gate 		else if (p == IPPROTO_ICMPV6) {
3087c478bd9Sstevel@tonic-gate 			struct icmp6_hdr *icmp;
3097c478bd9Sstevel@tonic-gate 
3107c478bd9Sstevel@tonic-gate 			icmp = (struct icmp6_hdr *)fin->fin_dp;
3117c478bd9Sstevel@tonic-gate 
3127c478bd9Sstevel@tonic-gate 			/*
3137c478bd9Sstevel@tonic-gate 			 * For ICMPV6, if the packet is an error packet, also
3147c478bd9Sstevel@tonic-gate 			 * include the information about the packet which
3157c478bd9Sstevel@tonic-gate 			 * caused the error.
3167c478bd9Sstevel@tonic-gate 			 */
3177c478bd9Sstevel@tonic-gate 			if (icmp->icmp6_type < 128) {
3187c478bd9Sstevel@tonic-gate 				hlen += MIN(sizeof(struct icmp6_hdr) + 8,
3197c478bd9Sstevel@tonic-gate 					    fin->fin_dlen);
3207c478bd9Sstevel@tonic-gate 			} else {
3217c478bd9Sstevel@tonic-gate 				hlen += MIN(sizeof(struct icmp6_hdr),
3227c478bd9Sstevel@tonic-gate 					    fin->fin_dlen);
3237c478bd9Sstevel@tonic-gate 			}
3247c478bd9Sstevel@tonic-gate 		}
3257c478bd9Sstevel@tonic-gate # endif
3267c478bd9Sstevel@tonic-gate 	}
3277c478bd9Sstevel@tonic-gate 	/*
3287c478bd9Sstevel@tonic-gate 	 * Get the interface number and name to which this packet is
3297c478bd9Sstevel@tonic-gate 	 * currently associated.
3307c478bd9Sstevel@tonic-gate 	 */
331*ab25eeb5Syz # if (SOLARIS || defined(__hpux)) && defined(_KERNEL)
332*ab25eeb5Syz 	ipfl.fl_unit = (u_int)0;
3337c478bd9Sstevel@tonic-gate 	(void) strncpy(ipfl.fl_ifname, IFNAME(ifp), sizeof(ipfl.fl_ifname));
3347c478bd9Sstevel@tonic-gate # else
335*ab25eeb5Syz #  if (defined(NetBSD) && (NetBSD <= 1991011) && (NetBSD >= 199603)) || \
336*ab25eeb5Syz       (defined(OpenBSD) && (OpenBSD >= 199603)) || defined(linux) || \
337*ab25eeb5Syz       (defined(__FreeBSD__) && (__FreeBSD_version >= 501113))
338*ab25eeb5Syz 	COPYIFNAME(ifp, ipfl.fl_ifname);
3397c478bd9Sstevel@tonic-gate #  else
340*ab25eeb5Syz 	ipfl.fl_unit = (u_int)ifp->if_unit;
341*ab25eeb5Syz #   if defined(_KERNEL)
3427c478bd9Sstevel@tonic-gate 	if ((ipfl.fl_ifname[0] = ifp->if_name[0]))
3437c478bd9Sstevel@tonic-gate 		if ((ipfl.fl_ifname[1] = ifp->if_name[1]))
3447c478bd9Sstevel@tonic-gate 			if ((ipfl.fl_ifname[2] = ifp->if_name[2]))
3457c478bd9Sstevel@tonic-gate 				ipfl.fl_ifname[3] = ifp->if_name[3];
346*ab25eeb5Syz #   else
347*ab25eeb5Syz 	(void) strncpy(ipfl.fl_ifname, IFNAME(ifp), sizeof(ipfl.fl_ifname));
348*ab25eeb5Syz 	ipfl.fl_ifname[sizeof(ipfl.fl_ifname) - 1] = '\0';
3497c478bd9Sstevel@tonic-gate #   endif
350*ab25eeb5Syz #  endif
351*ab25eeb5Syz # endif /* __hpux || SOLARIS */
3527c478bd9Sstevel@tonic-gate 	mlen = fin->fin_plen - hlen;
3537c478bd9Sstevel@tonic-gate 	if (!ipl_logall) {
3547c478bd9Sstevel@tonic-gate 		mlen = (flags & FR_LOGBODY) ? MIN(mlen, 128) : 0;
3557c478bd9Sstevel@tonic-gate 	} else if ((flags & FR_LOGBODY) == 0) {
3567c478bd9Sstevel@tonic-gate 		mlen = 0;
3577c478bd9Sstevel@tonic-gate 	}
3587c478bd9Sstevel@tonic-gate 	if (mlen < 0)
3597c478bd9Sstevel@tonic-gate 		mlen = 0;
3607c478bd9Sstevel@tonic-gate 	ipfl.fl_plen = (u_char)mlen;
3617c478bd9Sstevel@tonic-gate 	ipfl.fl_hlen = (u_char)hlen;
3627c478bd9Sstevel@tonic-gate 	ipfl.fl_rule = fin->fin_rule;
3637c478bd9Sstevel@tonic-gate 	(void) strncpy(ipfl.fl_group, fin->fin_group, FR_GROUPLEN);
3647c478bd9Sstevel@tonic-gate 	if (fin->fin_fr != NULL) {
3657c478bd9Sstevel@tonic-gate 		ipfl.fl_loglevel = fin->fin_fr->fr_loglevel;
366*ab25eeb5Syz 		ipfl.fl_logtag = fin->fin_fr->fr_logtag;
3677c478bd9Sstevel@tonic-gate 	} else {
3687c478bd9Sstevel@tonic-gate 		ipfl.fl_loglevel = 0xffff;
369*ab25eeb5Syz 		ipfl.fl_logtag = FR_NOLOGTAG;
3707c478bd9Sstevel@tonic-gate 	}
371*ab25eeb5Syz 	if (fin->fin_nattag != NULL)
372*ab25eeb5Syz 		bcopy(fin->fin_nattag, (void *)&ipfl.fl_nattag,
373*ab25eeb5Syz 		      sizeof(ipfl.fl_nattag));
3747c478bd9Sstevel@tonic-gate 	ipfl.fl_flags = flags;
3757c478bd9Sstevel@tonic-gate 	ipfl.fl_dir = fin->fin_out;
3767c478bd9Sstevel@tonic-gate 	ipfl.fl_lflags = fin->fin_flx;
3777c478bd9Sstevel@tonic-gate 	ptrs[0] = (void *)&ipfl;
3787c478bd9Sstevel@tonic-gate 	sizes[0] = sizeof(ipfl);
3797c478bd9Sstevel@tonic-gate 	types[0] = 0;
3807c478bd9Sstevel@tonic-gate # if defined(MENTAT) && defined(_KERNEL)
3817c478bd9Sstevel@tonic-gate 	/*
3827c478bd9Sstevel@tonic-gate 	 * Are we copied from the mblk or an aligned array ?
3837c478bd9Sstevel@tonic-gate 	 */
3847c478bd9Sstevel@tonic-gate 	if (fin->fin_ip == (ip_t *)m->b_rptr) {
3857c478bd9Sstevel@tonic-gate 		ptrs[1] = m;
3867c478bd9Sstevel@tonic-gate 		sizes[1] = hlen + mlen;
3877c478bd9Sstevel@tonic-gate 		types[1] = 1;
3887c478bd9Sstevel@tonic-gate 	} else {
3897c478bd9Sstevel@tonic-gate 		ptrs[1] = fin->fin_ip;
3907c478bd9Sstevel@tonic-gate 		sizes[1] = hlen + mlen;
3917c478bd9Sstevel@tonic-gate 		types[1] = 0;
3927c478bd9Sstevel@tonic-gate 	}
3937c478bd9Sstevel@tonic-gate # else
3947c478bd9Sstevel@tonic-gate 	ptrs[1] = m;
3957c478bd9Sstevel@tonic-gate 	sizes[1] = hlen + mlen;
3967c478bd9Sstevel@tonic-gate 	types[1] = 1;
3977c478bd9Sstevel@tonic-gate # endif /* MENTAT */
3987c478bd9Sstevel@tonic-gate 	return ipllog(IPL_LOGIPF, fin, ptrs, sizes, types, 2);
3997c478bd9Sstevel@tonic-gate }
4007c478bd9Sstevel@tonic-gate 
4017c478bd9Sstevel@tonic-gate 
4027c478bd9Sstevel@tonic-gate /* ------------------------------------------------------------------------ */
4037c478bd9Sstevel@tonic-gate /* Function:    ipllog                                                      */
4047c478bd9Sstevel@tonic-gate /* Returns:     int - 0 == success, -1 == failure                           */
4057c478bd9Sstevel@tonic-gate /* Parameters:  dev(I)    - device that owns this log record                */
4067c478bd9Sstevel@tonic-gate /*              fin(I)    - pointer to packet information                   */
4077c478bd9Sstevel@tonic-gate /*              items(I)  - array of pointers to log data                   */
4087c478bd9Sstevel@tonic-gate /*              itemsz(I) - array of size of valid memory pointed to        */
4097c478bd9Sstevel@tonic-gate /*              types(I)  - type of data pointed to by items pointers       */
4107c478bd9Sstevel@tonic-gate /*              cnt(I)    - number of elements in arrays items/itemsz/types */
4117c478bd9Sstevel@tonic-gate /*                                                                          */
4127c478bd9Sstevel@tonic-gate /* Takes an array of parameters and constructs one record to include the    */
4137c478bd9Sstevel@tonic-gate /* miscellaneous packet information, as well as packet data, for reading    */
4147c478bd9Sstevel@tonic-gate /* from the log device.                                                     */
4157c478bd9Sstevel@tonic-gate /* ------------------------------------------------------------------------ */
4167c478bd9Sstevel@tonic-gate int ipllog(dev, fin, items, itemsz, types, cnt)
4177c478bd9Sstevel@tonic-gate int dev;
4187c478bd9Sstevel@tonic-gate fr_info_t *fin;
4197c478bd9Sstevel@tonic-gate void **items;
4207c478bd9Sstevel@tonic-gate size_t *itemsz;
4217c478bd9Sstevel@tonic-gate int *types, cnt;
4227c478bd9Sstevel@tonic-gate {
423*ab25eeb5Syz 	caddr_t buf, ptr;
4247c478bd9Sstevel@tonic-gate 	iplog_t *ipl;
4257c478bd9Sstevel@tonic-gate 	size_t len;
4267c478bd9Sstevel@tonic-gate 	int i;
427*ab25eeb5Syz 	SPL_INT(s);
428*ab25eeb5Syz 
4297c478bd9Sstevel@tonic-gate 	/*
4307c478bd9Sstevel@tonic-gate 	 * Check to see if this log record has a CRC which matches the last
4317c478bd9Sstevel@tonic-gate 	 * record logged.  If it does, just up the count on the previous one
4327c478bd9Sstevel@tonic-gate 	 * rather than create a new one.
4337c478bd9Sstevel@tonic-gate 	 */
4347c478bd9Sstevel@tonic-gate 	if (ipl_suppress) {
4357c478bd9Sstevel@tonic-gate 		MUTEX_ENTER(&ipl_mutex);
436*ab25eeb5Syz 		if ((fin != NULL) && (fin->fin_off == 0)) {
4377c478bd9Sstevel@tonic-gate 			if ((ipll[dev] != NULL) &&
4387c478bd9Sstevel@tonic-gate 			    bcmp((char *)fin, (char *)&iplcrc[dev],
4397c478bd9Sstevel@tonic-gate 				 FI_LCSIZE) == 0) {
4407c478bd9Sstevel@tonic-gate 				ipll[dev]->ipl_count++;
4417c478bd9Sstevel@tonic-gate 				MUTEX_EXIT(&ipl_mutex);
4427c478bd9Sstevel@tonic-gate 				return 0;
4437c478bd9Sstevel@tonic-gate 			}
4447c478bd9Sstevel@tonic-gate 			bcopy((char *)fin, (char *)&iplcrc[dev], FI_LCSIZE);
4457c478bd9Sstevel@tonic-gate 		} else
4467c478bd9Sstevel@tonic-gate 			bzero((char *)&iplcrc[dev], FI_CSIZE);
4477c478bd9Sstevel@tonic-gate 		MUTEX_EXIT(&ipl_mutex);
4487c478bd9Sstevel@tonic-gate 	}
4497c478bd9Sstevel@tonic-gate 
4507c478bd9Sstevel@tonic-gate 	/*
4517c478bd9Sstevel@tonic-gate 	 * Get the total amount of data to be logged.
4527c478bd9Sstevel@tonic-gate 	 */
4537c478bd9Sstevel@tonic-gate 	for (i = 0, len = sizeof(iplog_t); i < cnt; i++)
4547c478bd9Sstevel@tonic-gate 		len += itemsz[i];
4557c478bd9Sstevel@tonic-gate 
4567c478bd9Sstevel@tonic-gate 	/*
4577c478bd9Sstevel@tonic-gate 	 * check that we have space to record this information and can
4587c478bd9Sstevel@tonic-gate 	 * allocate that much.
4597c478bd9Sstevel@tonic-gate 	 */
460*ab25eeb5Syz 	KMALLOCS(buf, caddr_t, len);
461*ab25eeb5Syz 	if (buf == NULL)
462*ab25eeb5Syz 		return -1;
463*ab25eeb5Syz 	SPL_NET(s);
4647c478bd9Sstevel@tonic-gate 	MUTEX_ENTER(&ipl_mutex);
465*ab25eeb5Syz 	if ((iplused[dev] + len) > ipl_logsize) {
4667c478bd9Sstevel@tonic-gate 		MUTEX_EXIT(&ipl_mutex);
467*ab25eeb5Syz 		SPL_X(s);
468*ab25eeb5Syz 		KFREES(buf, len);
469*ab25eeb5Syz 		return -1;
4707c478bd9Sstevel@tonic-gate 	}
4717c478bd9Sstevel@tonic-gate 	iplused[dev] += len;
4727c478bd9Sstevel@tonic-gate 	MUTEX_EXIT(&ipl_mutex);
473*ab25eeb5Syz 	SPL_X(s);
4747c478bd9Sstevel@tonic-gate 
4757c478bd9Sstevel@tonic-gate 	/*
4767c478bd9Sstevel@tonic-gate 	 * advance the log pointer to the next empty record and deduct the
4777c478bd9Sstevel@tonic-gate 	 * amount of space we're going to use.
4787c478bd9Sstevel@tonic-gate 	 */
4797c478bd9Sstevel@tonic-gate 	ipl = (iplog_t *)buf;
480*ab25eeb5Syz 	ipl->ipl_magic = ipl_magic[dev];
4817c478bd9Sstevel@tonic-gate 	ipl->ipl_count = 1;
4827c478bd9Sstevel@tonic-gate 	ipl->ipl_next = NULL;
4837c478bd9Sstevel@tonic-gate 	ipl->ipl_dsize = len;
4847c478bd9Sstevel@tonic-gate #ifdef _KERNEL
4857c478bd9Sstevel@tonic-gate 	GETKTIME(&ipl->ipl_sec);
4867c478bd9Sstevel@tonic-gate #else
4877c478bd9Sstevel@tonic-gate 	ipl->ipl_sec = 0;
4887c478bd9Sstevel@tonic-gate 	ipl->ipl_usec = 0;
4897c478bd9Sstevel@tonic-gate #endif
4907c478bd9Sstevel@tonic-gate 
4917c478bd9Sstevel@tonic-gate 	/*
4927c478bd9Sstevel@tonic-gate 	 * Loop through all the items to be logged, copying each one to the
4937c478bd9Sstevel@tonic-gate 	 * buffer.  Use bcopy for normal data or the mb_t copyout routine.
4947c478bd9Sstevel@tonic-gate 	 */
495*ab25eeb5Syz 	for (i = 0, ptr = buf + sizeof(*ipl); i < cnt; i++) {
4967c478bd9Sstevel@tonic-gate 		if (types[i] == 0) {
497*ab25eeb5Syz 			bcopy(items[i], ptr, itemsz[i]);
4987c478bd9Sstevel@tonic-gate 		} else if (types[i] == 1) {
499*ab25eeb5Syz 			COPYDATA(items[i], 0, itemsz[i], ptr);
5007c478bd9Sstevel@tonic-gate 		}
501*ab25eeb5Syz 		ptr += itemsz[i];
5027c478bd9Sstevel@tonic-gate 	}
503*ab25eeb5Syz 	SPL_NET(s);
5047c478bd9Sstevel@tonic-gate 	MUTEX_ENTER(&ipl_mutex);
5057c478bd9Sstevel@tonic-gate 	ipll[dev] = ipl;
5067c478bd9Sstevel@tonic-gate 	*iplh[dev] = ipl;
5077c478bd9Sstevel@tonic-gate 	iplh[dev] = &ipl->ipl_next;
5087c478bd9Sstevel@tonic-gate 
5097c478bd9Sstevel@tonic-gate 	/*
5107c478bd9Sstevel@tonic-gate 	 * Now that the log record has been completed and added to the queue,
5117c478bd9Sstevel@tonic-gate 	 * wake up any listeners who may want to read it.
5127c478bd9Sstevel@tonic-gate 	 */
5137c478bd9Sstevel@tonic-gate # if SOLARIS && defined(_KERNEL)
5147c478bd9Sstevel@tonic-gate 	cv_signal(&iplwait);
5157c478bd9Sstevel@tonic-gate 	MUTEX_EXIT(&ipl_mutex);
5167c478bd9Sstevel@tonic-gate # else
5177c478bd9Sstevel@tonic-gate 	MUTEX_EXIT(&ipl_mutex);
518*ab25eeb5Syz 	WAKEUP(iplh,dev);
5197c478bd9Sstevel@tonic-gate # endif
520*ab25eeb5Syz 	SPL_X(s);
5217c478bd9Sstevel@tonic-gate # ifdef	IPL_SELECT
5227c478bd9Sstevel@tonic-gate 	iplog_input_ready(dev);
5237c478bd9Sstevel@tonic-gate # endif
524*ab25eeb5Syz 	return 0;
5257c478bd9Sstevel@tonic-gate }
5267c478bd9Sstevel@tonic-gate 
5277c478bd9Sstevel@tonic-gate 
5287c478bd9Sstevel@tonic-gate /* ------------------------------------------------------------------------ */
5297c478bd9Sstevel@tonic-gate /* Function:    ipflog_read                                                 */
5307c478bd9Sstevel@tonic-gate /* Returns:     int    - 0 == success, else error value.                    */
5317c478bd9Sstevel@tonic-gate /* Parameters:  unit(I) - device we are reading from                        */
5327c478bd9Sstevel@tonic-gate /*              uio(O)  - pointer to information about where to store data  */
5337c478bd9Sstevel@tonic-gate /*                                                                          */
5347c478bd9Sstevel@tonic-gate /* Called to handle a read on an IPFilter device.  Returns only complete    */
5357c478bd9Sstevel@tonic-gate /* log messages - will not partially copy a log record out to userland.     */
5367c478bd9Sstevel@tonic-gate /*                                                                          */
5377c478bd9Sstevel@tonic-gate /* NOTE: This function will block and wait for a signal to return data if   */
5387c478bd9Sstevel@tonic-gate /* there is none present.  Asynchronous I/O is not implemented.             */
5397c478bd9Sstevel@tonic-gate /* ------------------------------------------------------------------------ */
5407c478bd9Sstevel@tonic-gate int ipflog_read(unit, uio)
5417c478bd9Sstevel@tonic-gate minor_t unit;
5427c478bd9Sstevel@tonic-gate struct uio *uio;
5437c478bd9Sstevel@tonic-gate {
5447c478bd9Sstevel@tonic-gate 	size_t dlen, copied;
5457c478bd9Sstevel@tonic-gate 	int error = 0;
5467c478bd9Sstevel@tonic-gate 	iplog_t *ipl;
547*ab25eeb5Syz 	SPL_INT(s);
5487c478bd9Sstevel@tonic-gate 
5497c478bd9Sstevel@tonic-gate 	/*
5507c478bd9Sstevel@tonic-gate 	 * Sanity checks.  Make sure the minor # is valid and we're copying
5517c478bd9Sstevel@tonic-gate 	 * a valid chunk of data.
5527c478bd9Sstevel@tonic-gate 	 */
5537c478bd9Sstevel@tonic-gate 	if (IPL_LOGMAX < unit)
5547c478bd9Sstevel@tonic-gate 		return ENXIO;
5557c478bd9Sstevel@tonic-gate 	if (uio->uio_resid == 0)
5567c478bd9Sstevel@tonic-gate 		return 0;
5577c478bd9Sstevel@tonic-gate 	if ((uio->uio_resid < sizeof(iplog_t)) ||
558*ab25eeb5Syz 	    (uio->uio_resid > ipl_logsize))
5597c478bd9Sstevel@tonic-gate 		return EINVAL;
560*ab25eeb5Syz 
5617c478bd9Sstevel@tonic-gate 	/*
5627c478bd9Sstevel@tonic-gate 	 * Lock the log so we can snapshot the variables.  Wait for a signal
5637c478bd9Sstevel@tonic-gate 	 * if the log is empty.
5647c478bd9Sstevel@tonic-gate 	 */
5657c478bd9Sstevel@tonic-gate 	SPL_NET(s);
5667c478bd9Sstevel@tonic-gate 	MUTEX_ENTER(&ipl_mutex);
5677c478bd9Sstevel@tonic-gate 
5687c478bd9Sstevel@tonic-gate 	while (iplt[unit] == NULL) {
5697c478bd9Sstevel@tonic-gate # if SOLARIS && defined(_KERNEL)
5707c478bd9Sstevel@tonic-gate 		if (!cv_wait_sig(&iplwait, &ipl_mutex.ipf_lk)) {
5717c478bd9Sstevel@tonic-gate 			MUTEX_EXIT(&ipl_mutex);
5727c478bd9Sstevel@tonic-gate 			return EINTR;
5737c478bd9Sstevel@tonic-gate 		}
5747c478bd9Sstevel@tonic-gate # else
5757c478bd9Sstevel@tonic-gate #  if defined(__hpux) && defined(_KERNEL)
5767c478bd9Sstevel@tonic-gate 		lock_t *l;
5777c478bd9Sstevel@tonic-gate 
5787c478bd9Sstevel@tonic-gate #   ifdef IPL_SELECT
5797c478bd9Sstevel@tonic-gate 		if (uio->uio_fpflags & (FNBLOCK|FNDELAY)) {
5807c478bd9Sstevel@tonic-gate 			/* this is no blocking system call */
5817c478bd9Sstevel@tonic-gate 			MUTEX_EXIT(&ipl_mutex);
5827c478bd9Sstevel@tonic-gate 			return 0;
5837c478bd9Sstevel@tonic-gate 		}
5847c478bd9Sstevel@tonic-gate #   endif
5857c478bd9Sstevel@tonic-gate 
5867c478bd9Sstevel@tonic-gate 		MUTEX_EXIT(&ipl_mutex);
5877c478bd9Sstevel@tonic-gate 		l = get_sleep_lock(&iplh[unit]);
5887c478bd9Sstevel@tonic-gate 		error = sleep(&iplh[unit], PZERO+1);
5897c478bd9Sstevel@tonic-gate 		spinunlock(l);
5907c478bd9Sstevel@tonic-gate #  else
5917c478bd9Sstevel@tonic-gate #   if defined(__osf__) && defined(_KERNEL)
5927c478bd9Sstevel@tonic-gate 		error = mpsleep(&iplh[unit], PSUSP|PCATCH,  "iplread", 0,
5937c478bd9Sstevel@tonic-gate 				&ipl_mutex, MS_LOCK_SIMPLE);
5947c478bd9Sstevel@tonic-gate #   else
5957c478bd9Sstevel@tonic-gate 		MUTEX_EXIT(&ipl_mutex);
5967c478bd9Sstevel@tonic-gate 		SPL_X(s);
597*ab25eeb5Syz 		error = SLEEP(unit + iplh, "ipl sleep");
5987c478bd9Sstevel@tonic-gate #   endif /* __osf__ */
5997c478bd9Sstevel@tonic-gate #  endif /* __hpux */
6007c478bd9Sstevel@tonic-gate 		if (error)
6017c478bd9Sstevel@tonic-gate 			return error;
6027c478bd9Sstevel@tonic-gate 		SPL_NET(s);
6037c478bd9Sstevel@tonic-gate 		MUTEX_ENTER(&ipl_mutex);
6047c478bd9Sstevel@tonic-gate # endif /* SOLARIS */
6057c478bd9Sstevel@tonic-gate 	}
6067c478bd9Sstevel@tonic-gate 
6077c478bd9Sstevel@tonic-gate # if (BSD >= 199101) || defined(__FreeBSD__) || defined(__osf__)
6087c478bd9Sstevel@tonic-gate 	uio->uio_rw = UIO_READ;
6097c478bd9Sstevel@tonic-gate # endif
6107c478bd9Sstevel@tonic-gate 
611*ab25eeb5Syz 	for (copied = 0; (ipl = iplt[unit]) != NULL; copied += dlen) {
6127c478bd9Sstevel@tonic-gate 		dlen = ipl->ipl_dsize;
6137c478bd9Sstevel@tonic-gate 		if (dlen > uio->uio_resid)
6147c478bd9Sstevel@tonic-gate 			break;
6157c478bd9Sstevel@tonic-gate 		/*
6167c478bd9Sstevel@tonic-gate 		 * Don't hold the mutex over the uiomove call.
6177c478bd9Sstevel@tonic-gate 		 */
6187c478bd9Sstevel@tonic-gate 		iplt[unit] = ipl->ipl_next;
6197c478bd9Sstevel@tonic-gate 		iplused[unit] -= dlen;
6207c478bd9Sstevel@tonic-gate 		MUTEX_EXIT(&ipl_mutex);
6217c478bd9Sstevel@tonic-gate 		SPL_X(s);
6227c478bd9Sstevel@tonic-gate 		error = UIOMOVE((caddr_t)ipl, dlen, UIO_READ, uio);
6237c478bd9Sstevel@tonic-gate 		if (error) {
6247c478bd9Sstevel@tonic-gate 			SPL_NET(s);
6257c478bd9Sstevel@tonic-gate 			MUTEX_ENTER(&ipl_mutex);
6267c478bd9Sstevel@tonic-gate 			ipl->ipl_next = iplt[unit];
6277c478bd9Sstevel@tonic-gate 			iplt[unit] = ipl;
628*ab25eeb5Syz 			iplused[unit] += dlen;
6297c478bd9Sstevel@tonic-gate 			break;
6307c478bd9Sstevel@tonic-gate 		}
631*ab25eeb5Syz 		MUTEX_ENTER(&ipl_mutex);
6327c478bd9Sstevel@tonic-gate 		KFREES((caddr_t)ipl, dlen);
6337c478bd9Sstevel@tonic-gate 		SPL_NET(s);
6347c478bd9Sstevel@tonic-gate 	}
635*ab25eeb5Syz 	if (!iplt[unit]) {
636*ab25eeb5Syz 		iplused[unit] = 0;
637*ab25eeb5Syz 		iplh[unit] = &iplt[unit];
638*ab25eeb5Syz 		ipll[unit] = NULL;
639*ab25eeb5Syz 	}
640*ab25eeb5Syz 
6417c478bd9Sstevel@tonic-gate 	MUTEX_EXIT(&ipl_mutex);
6427c478bd9Sstevel@tonic-gate 	SPL_X(s);
6437c478bd9Sstevel@tonic-gate 	return error;
6447c478bd9Sstevel@tonic-gate }
6457c478bd9Sstevel@tonic-gate 
6467c478bd9Sstevel@tonic-gate 
6477c478bd9Sstevel@tonic-gate /* ------------------------------------------------------------------------ */
6487c478bd9Sstevel@tonic-gate /* Function:    ipflog_clear                                                */
6497c478bd9Sstevel@tonic-gate /* Returns:     int    - number of log bytes cleared.                       */
6507c478bd9Sstevel@tonic-gate /* Parameters:  unit(I) - device we are reading from                        */
6517c478bd9Sstevel@tonic-gate /*                                                                          */
6527c478bd9Sstevel@tonic-gate /* Deletes all queued up log records for a given output device.             */
6537c478bd9Sstevel@tonic-gate /* ------------------------------------------------------------------------ */
6547c478bd9Sstevel@tonic-gate int ipflog_clear(unit)
6557c478bd9Sstevel@tonic-gate minor_t unit;
6567c478bd9Sstevel@tonic-gate {
6577c478bd9Sstevel@tonic-gate 	iplog_t *ipl;
6587c478bd9Sstevel@tonic-gate 	int used;
659*ab25eeb5Syz 	SPL_INT(s);
6607c478bd9Sstevel@tonic-gate 
661*ab25eeb5Syz 	SPL_NET(s);
6627c478bd9Sstevel@tonic-gate 	MUTEX_ENTER(&ipl_mutex);
6637c478bd9Sstevel@tonic-gate 	while ((ipl = iplt[unit]) != NULL) {
6647c478bd9Sstevel@tonic-gate 		iplt[unit] = ipl->ipl_next;
6657c478bd9Sstevel@tonic-gate 		KFREES((caddr_t)ipl, ipl->ipl_dsize);
6667c478bd9Sstevel@tonic-gate 	}
6677c478bd9Sstevel@tonic-gate 	iplh[unit] = &iplt[unit];
6687c478bd9Sstevel@tonic-gate 	ipll[unit] = NULL;
6697c478bd9Sstevel@tonic-gate 	used = iplused[unit];
6707c478bd9Sstevel@tonic-gate 	iplused[unit] = 0;
6717c478bd9Sstevel@tonic-gate 	bzero((char *)&iplcrc[unit], FI_CSIZE);
6727c478bd9Sstevel@tonic-gate 	MUTEX_EXIT(&ipl_mutex);
673*ab25eeb5Syz 	SPL_X(s);
6747c478bd9Sstevel@tonic-gate 	return used;
6757c478bd9Sstevel@tonic-gate }
6767c478bd9Sstevel@tonic-gate #endif /* IPFILTER_LOG */
677