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-rw-r--r--sys/netinet/ip_fil.h391
1 files changed, 311 insertions, 80 deletions
diff --git a/sys/netinet/ip_fil.h b/sys/netinet/ip_fil.h
index e9ec1254057..8bb0186cb60 100644
--- a/sys/netinet/ip_fil.h
+++ b/sys/netinet/ip_fil.h
@@ -1,18 +1,25 @@
-/* $OpenBSD: ip_fil.h,v 1.8 1997/02/11 22:23:16 kstailey Exp $ */
/*
- * (C)opyright 1993-1996 by Darren Reed.
+ * Copyright (C) 1993-1997 by Darren Reed.
*
* Redistribution and use in source and binary forms are permitted
* provided that this notice is preserved and due credit is given
* to the original author and the contributors.
*
* @(#)ip_fil.h 1.35 6/5/96
- * Id: ip_fil.h,v 2.0.1.2 1997/01/10 00:28:15 darrenr Exp
+ * $Id: ip_fil.h,v 1.9 1998/01/26 04:10:39 dgregor Exp $
*/
#ifndef __IP_FIL_H__
#define __IP_FIL_H__
+/*
+ * Pathnames for various IP Filter control devices. Used by LKM
+ * and userland, so defined here.
+ */
+#define IPNAT_NAME "/dev/ipnat"
+#define IPSTATE_NAME "/dev/ipstate"
+#define IPAUTH_NAME "/dev/ipauth"
+
#ifndef SOLARIS
#define SOLARIS (defined(sun) && (defined(__svr4__) || defined(__SVR4)))
#endif
@@ -20,20 +27,12 @@
#if defined(KERNEL) && !defined(_KERNEL)
#define _KERNEL
#endif
-#if SOLARIS
-# include <sys/ioccom.h>
-# include <sys/sysmacros.h>
-# ifdef _KERNEL
-# include <inet/common.h>
-/*
- * because Solaris 2 defines these in two places :-/
- */
-#undef IPOPT_EOL
-#undef IPOPT_NOP
-#undef IPOPT_LSRR
-#undef IPOPT_RR
-#undef IPOPT_SSRR
-# include <inet/ip.h>
+
+#ifndef __P
+# ifdef __STDC__
+# define __P(x) x
+# else
+# define __P(x) ()
# endif
#endif
@@ -54,6 +53,9 @@
#define SIOCFRSYN _IOW('r', 73, u_int)
#define SIOCFRZST _IOWR('r', 74, struct friostat)
#define SIOCZRLST _IOWR('r', 75, struct frentry)
+#define SIOCAUTHW _IOWR('r', 76, struct fr_info)
+#define SIOCAUTHR _IOWR('r', 77, struct fr_info)
+#define SIOCATHST _IOWR('r', 78, struct fr_authstat)
#else
#define SIOCADAFR _IOW(r, 60, struct frentry)
#define SIOCRMAFR _IOW(r, 61, struct frentry)
@@ -71,6 +73,9 @@
#define SIOCFRSYN _IOW(r, 73, u_int)
#define SIOCFRZST _IOWR(r, 74, struct friostat)
#define SIOCZRLST _IOWR(r, 75, struct frentry)
+#define SIOCAUTHW _IOWR(r, 76, struct fr_info)
+#define SIOCAUTHR _IOWR(r, 77, struct fr_info)
+#define SIOCATHST _IOWR(r, 78, struct fr_authstat)
#endif
#define SIOCADDFR SIOCADAFR
#define SIOCDELFR SIOCRMAFR
@@ -84,31 +89,42 @@ typedef struct fr_ip {
u_char fi_p;
struct in_addr fi_src;
struct in_addr fi_dst;
- u_long fi_optmsk; /* bitmask composed from IP options */
+ u_32_t fi_optmsk; /* bitmask composed from IP options */
u_short fi_secmsk; /* bitmask composed from IP security options */
u_short fi_auth;
} fr_ip_t;
-#define FI_OPTIONS 0x01
-#define FI_TCPUDP 0x02 /* TCP/UCP implied comparison involved */
-#define FI_FRAG 0x04
-#define FI_SHORT 0x08
+#define FI_OPTIONS (FF_OPTIONS >> 24)
+#define FI_TCPUDP (FF_TCPUDP >> 24) /* TCP/UCP implied comparison*/
+#define FI_FRAG (FF_FRAG >> 24)
+#define FI_SHORT (FF_SHORT >> 24)
typedef struct fr_info {
struct fr_ip fin_fi;
- void *fin_ifp;
u_short fin_data[2];
u_short fin_out;
+ u_short fin_hlen;
u_char fin_tcpf;
- u_char fin_icode;
+ u_char fin_icode; /* From here on is packet specific */
u_short fin_rule;
- u_short fin_hlen;
+ u_short fin_group;
u_short fin_dlen;
- char *fin_dp; /* start of data past IP header */
+ u_short fin_id;
+ void *fin_ifp;
struct frentry *fin_fr;
+ char *fin_dp; /* start of data past IP header */
+ void *fin_mp;
} fr_info_t;
-#define FI_CSIZE (sizeof(struct fr_ip) + 11)
+/*
+ * Size for compares on fr_info structures
+ */
+#define FI_CSIZE (sizeof(struct fr_ip) + sizeof(u_short) * 4 + \
+ sizeof(u_char))
+/*
+ * Size for copying cache fr_info structure
+ */
+#define FI_COPYSIZE (sizeof(fr_info_t) - sizeof(void *) * 2)
typedef struct frdest {
void *fd_ifp;
@@ -118,10 +134,17 @@ typedef struct frdest {
typedef struct frentry {
struct frentry *fr_next;
- struct ifnet *fr_ifa;
- u_long fr_hits;
- u_long fr_bytes; /* this is only incremented when a packet */
- /* matches this rule and it is the last match*/
+ u_short fr_group; /* group to which this rule belongs */
+ u_short fr_grhead; /* group # which this rule starts */
+ struct frentry *fr_grp;
+ int fr_ref; /* reference count - for grouping */
+ void *fr_ifa;
+ /*
+ * These are only incremented when a packet matches this rule and
+ * it is the last match
+ */
+ U_QUAD_T fr_hits;
+ U_QUAD_T fr_bytes;
/*
* Fields after this may not change whilst in the kernel.
*/
@@ -140,9 +163,9 @@ typedef struct frentry {
u_short fr_sport;
u_short fr_stop; /* top port for <> and >< */
u_short fr_dtop; /* top port for <> and >< */
- u_long fr_flags; /* per-rule flags && options (see below) */
- int (*fr_func) __P((int, ip_t *, fr_info_t *));
- /* call this function */
+ u_32_t fr_flags; /* per-rule flags && options (see below) */
+ int fr_skip; /* # of rules to skip */
+ int (*fr_func) __P((int, ip_t *, fr_info_t *)); /* call this function */
char fr_icode; /* return ICMP code */
char fr_ifname[IFNAMSIZ];
struct frdest fr_tif; /* "to" interface */
@@ -164,11 +187,11 @@ typedef struct frentry {
/*
* fr_flags
-*/
-#define FR_BLOCK 0x00001
-#define FR_PASS 0x00002
-#define FR_OUTQUE 0x00004
-#define FR_INQUE 0x00008
+ */
+#define FR_BLOCK 0x00001 /* do not allow packet to pass */
+#define FR_PASS 0x00002 /* allow packet to pass */
+#define FR_OUTQUE 0x00004 /* outgoing packets */
+#define FR_INQUE 0x00008 /* ingoing packets */
#define FR_LOG 0x00010 /* Log */
#define FR_LOGB 0x00011 /* Log-fail */
#define FR_LOGP 0x00012 /* Log-pass */
@@ -176,7 +199,7 @@ typedef struct frentry {
#define FR_LOGFIRST 0x00040 /* Log the first byte if state held */
#define FR_RETRST 0x00080 /* Return TCP RST packet - reset connection */
#define FR_RETICMP 0x00100 /* Return ICMP unreachable packet */
-#define FR_NOMATCH 0x00200
+#define FR_NOMATCH 0x00200 /* no match occured */
#define FR_ACCOUNT 0x00400 /* count packet bytes */
#define FR_KEEPFRAG 0x00800 /* keep fragment information */
#define FR_KEEPSTATE 0x01000 /* keep `connection' state information */
@@ -186,16 +209,28 @@ typedef struct frentry {
#define FR_CALLNOW 0x10000 /* call another function (fr_func) if matches */
#define FR_DUP 0x20000 /* duplicate packet */
#define FR_LOGORBLOCK 0x40000 /* block the packet if it can't be logged */
+#define FR_NOTSRCIP 0x80000 /* not the src IP# */
+#define FR_NOTDSTIP 0x100000 /* not the dst IP# */
+#define FR_AUTH 0x200000 /* use authentication */
+#define FR_PREAUTH 0x400000 /* require preauthentication */
#define FR_LOGMASK (FR_LOG|FR_LOGP|FR_LOGB)
+
/*
- * recognized flags for SIOCGETFF and SIOCSETFF
+ * These correspond to #define's for FI_* and are stored in fr_flags
*/
-#define FF_LOGPASS 0x100000
-#define FF_LOGBLOCK 0x200000
-#define FF_LOGNOMATCH 0x400000
+#define FF_OPTIONS 0x01000000
+#define FF_TCPUDP 0x02000000
+#define FF_FRAG 0x04000000
+#define FF_SHORT 0x08000000
+/*
+ * recognized flags for SIOCGETFF and SIOCSETFF, and get put in fr_flags
+ */
+#define FF_LOGPASS 0x10000000
+#define FF_LOGBLOCK 0x20000000
+#define FF_LOGNOMATCH 0x40000000
#define FF_LOGGING (FF_LOGPASS|FF_LOGBLOCK|FF_LOGNOMATCH)
-#define FF_BLOCKNONIP 0x800000 /* Solaris2 Only */
+#define FF_BLOCKNONIP 0x80000000 /* Solaris2 Only */
#define FR_NONE 0
#define FR_EQUAL 1
@@ -224,6 +259,7 @@ typedef struct filterstats {
u_long fr_bads; /* bad attempts to allocate packet state */
u_long fr_ads; /* new packet state kept */
u_long fr_chit; /* cached hit */
+ u_long fr_tcpbad; /* TCP checksum check failures */
u_long fr_pull[2]; /* good and bad pullup attempts */
#if SOLARIS
u_long fr_bad; /* bad IP packets to the filter */
@@ -241,61 +277,256 @@ typedef struct friostat {
struct frentry *f_fout[2];
struct frentry *f_acctin[2];
struct frentry *f_acctout[2];
+ struct frentry *f_auth;
+ u_long f_froute[2];
int f_active;
} friostat_t;
-typedef struct optlist {
+typedef struct optlist {
u_short ol_val;
- int ol_bit;
+ int ol_bit;
} optlist_t;
+
/*
- * Log structure. Each packet header logged is prepended by one of these,
- * minimize size to make most effective use of log space which should
- * (ideally) be a muliple of the most common log entry size.
+ * Group list structure.
*/
-typedef struct ipl_ci {
- u_long sec;
- u_long usec;
- u_char hlen;
- u_char plen;
- u_short rule; /* assume never more than 64k rules, total */
+typedef struct frgroup {
+ u_short fg_num;
+ struct frgroup *fg_next;
+ struct frentry *fg_head;
+ struct frentry **fg_start;
+} frgroup_t;
+
+
+/*
+ * Log structure. Each packet header logged is prepended by one of these.
+ * Following this in the log records read from the device will be an ipflog
+ * structure which is then followed by any packet data.
+ */
+typedef struct iplog {
+ u_long ipl_magic;
+ u_long ipl_sec;
+ u_long ipl_usec;
+ u_int ipl_len;
+ u_int ipl_count;
+ size_t ipl_dsize;
+ struct iplog *ipl_next;
+} iplog_t;
+
+#define IPL_MAGIC 0x49504c4d /* 'IPLM' */
+
+typedef struct ipflog {
#if (defined(NetBSD) && (NetBSD <= 1991011) && (NetBSD >= 199603)) || \
- (defined(OpenBSD) && (OpenBSD >= 199603))
- u_long flags;
- u_char ifname[IFNAMSIZ]; /* = 32 bytes */
+ (defined(OpenBSD) && (OpenBSD >= 199603))
+ u_char fl_ifname[IFNAMSIZ];
#else
- u_long flags:24;
- u_long unit:8;
- u_char ifname[4]; /* = 20 bytes */
+ u_int fl_unit;
+ u_char fl_ifname[4];
#endif
-} ipl_ci_t;
+ u_char fl_plen; /* extra data after hlen */
+ u_char fl_hlen; /* length of IP headers saved */
+ u_short fl_rule; /* assume never more than 64k rules, total */
+ u_short fl_group;
+ u_32_t fl_flags;
+} ipflog_t;
+# ifdef __OpenBSD__
+# ifndef ICMP_UNREACH_FILTER_PROHIB
+# define ICMP_UNREACH_FILTER_PROHIB 13
+# endif
+#else
+# ifndef ICMP_UNREACH_FILTER
+# define ICMP_UNREACH_FILTER 13
+# endif
+#endif
-#ifndef ICMP_UNREACH_FILTER_PROHIB
-#define ICMP_UNREACH_FILTER_PROHIB 13
+#ifndef IPF_LOGGING
+#define IPF_LOGGING 0
+#endif
+#ifndef IPF_DEFAULT_PASS
+#define IPF_DEFAULT_PASS FR_PASS
#endif
#define IPMINLEN(i, h) ((i)->ip_len >= ((i)->ip_hl * 4 + sizeof(struct h)))
#define IPLLOGSIZE 8192
-#ifdef _KERNEL
-extern int fr_check __P((ip_t *, int, struct ifnet *, int,
- struct mbuf **));
-#else
-extern int fr_check __P((ip_t *, int, struct ifnet *, int));
+/*
+ * Device filenames for reading log information. Use ipf on Solaris2 because
+ * ipl is already a name used by something else.
+ */
+#ifndef IPL_NAME
+# if SOLARIS
+# define IPL_NAME "/dev/ipf"
+# else
+# define IPL_NAME "/dev/ipl"
+# endif
#endif
-extern int fr_copytolog(char *, int);
-extern fr_info_t frcache[];
-extern char *iplh, *iplt;
-extern char iplbuf[IPLLOGSIZE];
+#define IPL_NAT IPNAT_NAME
+#define IPL_STATE IPSTATE_NAME
+#define IPL_AUTH IPAUTH_NAME
-#ifdef _KERNEL
+#define IPL_LOGIPF 0 /* Minor device #'s for accessing logs */
+#define IPL_LOGNAT 1
+#define IPL_LOGSTATE 2
+#define IPL_LOGAUTH 3
+#define IPL_LOGMAX 3
-extern struct frentry *ipfilter[2][2], *ipacct[2][2];
-extern struct filterstats frstats[];
-# if SOLARIS
-extern int ipfsync();
+#if !defined(CDEV_MAJOR) && defined (__FreeBSD_version) && \
+ (__FreeBSD_version >= 220000)
+# define CDEV_MAJOR 79
+#endif
+
+#ifndef _KERNEL
+extern int fr_check __P((ip_t *, int, void *, int, mb_t **));
+extern int (*fr_checkp) __P((ip_t *, int, void *, int, mb_t **));
+extern int send_reset __P((ip_t *, struct ifnet *));
+extern int icmp_error __P((ip_t *, struct ifnet *));
+extern int ipf_log __P((void));
+extern void ipfr_fastroute __P((ip_t *, fr_info_t *, frdest_t *));
+extern struct ifnet *get_unit __P((char *));
+# define FR_SCANLIST(p, ip, fi, m) fr_scanlist(p, ip, fi, m)
+# if defined(__NetBSD__) || defined(__OpenBSD__) || (_BSDI_VERSION >= 199701)
+extern int iplioctl __P((dev_t, u_long, caddr_t, int));
+# else
+extern int iplioctl __P((dev_t, int, caddr_t, int));
+# endif
+# ifdef __OpenBSD__
+extern int iplopen __P((dev_t, int));
+extern int iplclose __P((dev_t, int));
# endif
-#endif /* _KERNEL */
+extern int ipl_enable __P((void));
+extern int ipl_disable __P((void));
+#else /* #ifndef _KERNEL */
+# if defined(__NetBSD__) && defined(PFIL_HOOKS)
+extern int ipfilterattach __P((int));
+# endif
+# ifndef __OpenBSD__
+extern int iplattach __P((void));
+# endif
+extern int ipl_enable __P((void));
+extern int ipl_disable __P((void));
+extern void ipflog_init __P((void));
+extern int ipflog_clear __P((int));
+extern int ipflog_read __P((int, struct uio *));
+extern int ipflog __P((u_int, ip_t *, fr_info_t *, mb_t *));
+extern int ipllog __P((int, u_long, void **, size_t *, int *, int));
+# if SOLARIS
+extern int fr_check __P((ip_t *, int, void *, int, qif_t *, mb_t **));
+extern int (*fr_checkp) __P((ip_t *, int, void *,
+ int, qif_t *, mb_t **));
+extern int icmp_error __P((ip_t *, int, int, qif_t *,
+ struct in_addr));
+extern int iplioctl __P((dev_t, int, int, int, cred_t *, int *));
+extern int iplopen __P((dev_t *, int, int, cred_t *));
+extern int iplclose __P((dev_t, int, int, cred_t *));
+extern int ipfsync __P((void));
+extern int send_reset __P((ip_t *, qif_t *));
+extern int ipfr_fastroute __P((qif_t *, ip_t *, mblk_t *, mblk_t **,
+ fr_info_t *, frdest_t *));
+extern void copyin_mblk __P((mblk_t *, int, int, char *));
+extern void copyout_mblk __P((mblk_t *, int, int, char *));
+extern int fr_qin __P((queue_t *, mblk_t *));
+extern int fr_qout __P((queue_t *, mblk_t *));
+# ifdef IPFILTER_LOG
+extern int iplread __P((dev_t, struct uio *, cred_t *));
+# endif
+# else /* SOLARIS */
+extern int fr_check __P((ip_t *, int, void *, int, mb_t **));
+extern int (*fr_checkp) __P((ip_t *, int, void *, int, mb_t **));
+# ifdef linux
+extern int send_reset __P((tcpiphdr_t *, struct ifnet *));
+# else
+extern int send_reset __P((tcpiphdr_t *));
+# endif
+extern void ipfr_fastroute __P((mb_t *, fr_info_t *, frdest_t *));
+extern size_t mbufchainlen __P((mb_t *));
+# ifdef __sgi
+# include <sys/cred.h>
+extern int iplioctl __P((dev_t, int, caddr_t, int, cred_t *, int *));
+extern int iplopen __P((dev_t *, int, int, cred_t *));
+extern int iplclose __P((dev_t, int, int, cred_t *));
+extern int iplread __P((dev_t, struct uio *, cred_t *));
+extern int ipfsync __P((void));
+extern int ipfilter_sgi_attach __P((void));
+extern void ipfilter_sgi_detach __P((void));
+extern void ipfilter_sgi_intfsync __P((void));
+# else
+# ifdef IPFILTER_LKM
+extern int iplidentify __P((char *));
+# endif
+# if (_BSDI_VERSION >= 199510) || (__FreeBSD_version >= 220000) || \
+ (NetBSD >= 199511) || defined(__OpenBSD__)
+# if defined(__NetBSD__) || (_BSDI_VERSION >= 199701) || defined(__OpenBSD__)
+extern int iplioctl __P((dev_t, u_long, caddr_t, int, struct proc *));
+# else
+extern int iplioctl __P((dev_t, int, caddr_t, int, struct proc *));
+# endif
+extern int iplopen __P((dev_t, int, int, struct proc *));
+extern int iplclose __P((dev_t, int, int, struct proc *));
+# else
+# if defined(__OpenBSD__)
+extern int iplioctl __P((dev_t, u_long, caddr_t, int));
+# else /* __OpenBSD__ */
+# ifndef linux
+extern int iplioctl __P((dev_t, int, caddr_t, int));
+# else
+extern int iplioctl(struct inode *, struct file *, u_int, u_long);
+# endif
+# endif /* __OpenBSD__ */
+# ifndef linux
+extern int iplopen __P((dev_t, int));
+extern int iplclose __P((dev_t, int));
+# else
+extern int iplopen __P((struct inode *, struct file *));
+extern void iplclose __P((struct inode *, struct file *));
+# endif /* !linux */
+# endif /* (_BSDI_VERSION >= 199510) */
+# if BSD >= 199306
+extern int iplread __P((dev_t, struct uio *, int));
+# else
+# ifndef linux
+extern int iplread __P((dev_t, struct uio *));
+# else
+extern int iplread(struct inode *, struct file *, char *, int);
+# endif /* !linux */
+# endif /* BSD >= 199306 */
+# endif /* __ sgi */
+# endif /* SOLARIS */
+#endif /* #ifndef _KERNEL */
+
+/*
+ * Post NetBSD 1.2 has the PFIL interface for packet filters. This turns
+ * on those hooks. We don't need any special mods in non-IP Filter code
+ * with this!
+ */
+#if (defined(NetBSD) && (NetBSD > 199609) && (NetBSD <= 1991011)) || \
+ (defined(NetBSD1_2) && NetBSD1_2 > 1)
+# define NETBSD_PF
+#endif
+
+extern int ipldetach __P((void));
+extern u_short fr_tcpsum __P((mb_t *, ip_t *, tcphdr_t *, int));
+#define FR_SCANLIST(p, ip, fi, m) fr_scanlist(p, ip, fi, m)
+extern int fr_scanlist __P((int, ip_t *, fr_info_t *, void *));
+extern u_short ipf_cksum __P((u_short *, int));
+extern int fr_copytolog __P((int, char *, int));
+extern void frflush __P((int, int *));
+extern frgroup_t *fr_addgroup __P((u_short, frentry_t *, int, int));
+extern frgroup_t *fr_findgroup __P((u_short, u_32_t, int, int, frgroup_t ***));
+extern void fr_delgroup __P((u_short, u_32_t, int, int));
+extern int ipl_unreach;
+extern int ipl_inited;
+extern u_long ipl_frouteok[2];
+extern int fr_pass;
+extern int fr_flags;
+extern int fr_active;
+extern fr_info_t frcache[2];
+#ifdef IPFILTER_LOG
+extern iplog_t **iplh[IPL_LOGMAX+1], *iplt[IPL_LOGMAX+1];
+extern int iplused[IPL_LOGMAX + 1];
+#endif
+extern struct frentry *ipfilter[2][2], *ipacct[2][2];
+extern struct frgroup *ipfgroups[3][2];
+extern struct filterstats frstats[];
#endif /* __IP_FIL_H__ */
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