IPv4 packets (when it should return FALSE). It happens because PF_ANEQ() doesn't stop if first 32 bits of IPv4 packets are equal and starts to check next 3*32 bits (like for IPv6 packet). Those bits containt some garbage and in result PF_ANEQ() wrongly returns TRUE. Fix: Check if packet is of AF_INET type and if it is then compare only first 32 bits of data. PR: 204005 Submitted by: Miłosz Kaniewski
1748 lines
50 KiB
C
1748 lines
50 KiB
C
/*
|
|
* Copyright (c) 2001 Daniel Hartmeier
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* - Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* - Redistributions in binary form must reproduce the above
|
|
* copyright notice, this list of conditions and the following
|
|
* disclaimer in the documentation and/or other materials provided
|
|
* with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
|
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* $OpenBSD: pfvar.h,v 1.282 2009/01/29 15:12:28 pyr Exp $
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _NET_PFVAR_H_
|
|
#define _NET_PFVAR_H_
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/queue.h>
|
|
#include <sys/counter.h>
|
|
#include <sys/refcount.h>
|
|
#include <sys/tree.h>
|
|
|
|
#include <net/radix.h>
|
|
#include <netinet/in.h>
|
|
|
|
#include <netpfil/pf/pf.h>
|
|
#include <netpfil/pf/pf_altq.h>
|
|
#include <netpfil/pf/pf_mtag.h>
|
|
|
|
struct pf_addr {
|
|
union {
|
|
struct in_addr v4;
|
|
struct in6_addr v6;
|
|
u_int8_t addr8[16];
|
|
u_int16_t addr16[8];
|
|
u_int32_t addr32[4];
|
|
} pfa; /* 128-bit address */
|
|
#define v4 pfa.v4
|
|
#define v6 pfa.v6
|
|
#define addr8 pfa.addr8
|
|
#define addr16 pfa.addr16
|
|
#define addr32 pfa.addr32
|
|
};
|
|
|
|
#define PFI_AFLAG_NETWORK 0x01
|
|
#define PFI_AFLAG_BROADCAST 0x02
|
|
#define PFI_AFLAG_PEER 0x04
|
|
#define PFI_AFLAG_MODEMASK 0x07
|
|
#define PFI_AFLAG_NOALIAS 0x08
|
|
|
|
struct pf_addr_wrap {
|
|
union {
|
|
struct {
|
|
struct pf_addr addr;
|
|
struct pf_addr mask;
|
|
} a;
|
|
char ifname[IFNAMSIZ];
|
|
char tblname[PF_TABLE_NAME_SIZE];
|
|
} v;
|
|
union {
|
|
struct pfi_dynaddr *dyn;
|
|
struct pfr_ktable *tbl;
|
|
int dyncnt;
|
|
int tblcnt;
|
|
} p;
|
|
u_int8_t type; /* PF_ADDR_* */
|
|
u_int8_t iflags; /* PFI_AFLAG_* */
|
|
};
|
|
|
|
#ifdef _KERNEL
|
|
|
|
struct pfi_dynaddr {
|
|
TAILQ_ENTRY(pfi_dynaddr) entry;
|
|
struct pf_addr pfid_addr4;
|
|
struct pf_addr pfid_mask4;
|
|
struct pf_addr pfid_addr6;
|
|
struct pf_addr pfid_mask6;
|
|
struct pfr_ktable *pfid_kt;
|
|
struct pfi_kif *pfid_kif;
|
|
int pfid_net; /* mask or 128 */
|
|
int pfid_acnt4; /* address count IPv4 */
|
|
int pfid_acnt6; /* address count IPv6 */
|
|
sa_family_t pfid_af; /* rule af */
|
|
u_int8_t pfid_iflags; /* PFI_AFLAG_* */
|
|
};
|
|
|
|
/*
|
|
* Address manipulation macros
|
|
*/
|
|
#define HTONL(x) (x) = htonl((__uint32_t)(x))
|
|
#define HTONS(x) (x) = htons((__uint16_t)(x))
|
|
#define NTOHL(x) (x) = ntohl((__uint32_t)(x))
|
|
#define NTOHS(x) (x) = ntohs((__uint16_t)(x))
|
|
|
|
#define PF_NAME "pf"
|
|
|
|
#define PF_HASHROW_ASSERT(h) mtx_assert(&(h)->lock, MA_OWNED)
|
|
#define PF_HASHROW_LOCK(h) mtx_lock(&(h)->lock)
|
|
#define PF_HASHROW_UNLOCK(h) mtx_unlock(&(h)->lock)
|
|
|
|
#define PF_STATE_LOCK(s) \
|
|
do { \
|
|
struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)]; \
|
|
PF_HASHROW_LOCK(_ih); \
|
|
} while (0)
|
|
|
|
#define PF_STATE_UNLOCK(s) \
|
|
do { \
|
|
struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH((s))]; \
|
|
PF_HASHROW_UNLOCK(_ih); \
|
|
} while (0)
|
|
|
|
#ifdef INVARIANTS
|
|
#define PF_STATE_LOCK_ASSERT(s) \
|
|
do { \
|
|
struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)]; \
|
|
PF_HASHROW_ASSERT(_ih); \
|
|
} while (0)
|
|
#else /* !INVARIANTS */
|
|
#define PF_STATE_LOCK_ASSERT(s) do {} while (0)
|
|
#endif /* INVARIANTS */
|
|
|
|
extern struct mtx pf_unlnkdrules_mtx;
|
|
#define PF_UNLNKDRULES_LOCK() mtx_lock(&pf_unlnkdrules_mtx)
|
|
#define PF_UNLNKDRULES_UNLOCK() mtx_unlock(&pf_unlnkdrules_mtx)
|
|
|
|
extern struct rwlock pf_rules_lock;
|
|
#define PF_RULES_RLOCK() rw_rlock(&pf_rules_lock)
|
|
#define PF_RULES_RUNLOCK() rw_runlock(&pf_rules_lock)
|
|
#define PF_RULES_WLOCK() rw_wlock(&pf_rules_lock)
|
|
#define PF_RULES_WUNLOCK() rw_wunlock(&pf_rules_lock)
|
|
#define PF_RULES_ASSERT() rw_assert(&pf_rules_lock, RA_LOCKED)
|
|
#define PF_RULES_RASSERT() rw_assert(&pf_rules_lock, RA_RLOCKED)
|
|
#define PF_RULES_WASSERT() rw_assert(&pf_rules_lock, RA_WLOCKED)
|
|
|
|
#define PF_MODVER 1
|
|
#define PFLOG_MODVER 1
|
|
#define PFSYNC_MODVER 1
|
|
|
|
#define PFLOG_MINVER 1
|
|
#define PFLOG_PREFVER PFLOG_MODVER
|
|
#define PFLOG_MAXVER 1
|
|
#define PFSYNC_MINVER 1
|
|
#define PFSYNC_PREFVER PFSYNC_MODVER
|
|
#define PFSYNC_MAXVER 1
|
|
|
|
#ifdef INET
|
|
#ifndef INET6
|
|
#define PF_INET_ONLY
|
|
#endif /* ! INET6 */
|
|
#endif /* INET */
|
|
|
|
#ifdef INET6
|
|
#ifndef INET
|
|
#define PF_INET6_ONLY
|
|
#endif /* ! INET */
|
|
#endif /* INET6 */
|
|
|
|
#ifdef INET
|
|
#ifdef INET6
|
|
#define PF_INET_INET6
|
|
#endif /* INET6 */
|
|
#endif /* INET */
|
|
|
|
#else
|
|
|
|
#define PF_INET_INET6
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
/* Both IPv4 and IPv6 */
|
|
#ifdef PF_INET_INET6
|
|
|
|
#define PF_AEQ(a, b, c) \
|
|
((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \
|
|
(c == AF_INET6 && (a)->addr32[3] == (b)->addr32[3] && \
|
|
(a)->addr32[2] == (b)->addr32[2] && \
|
|
(a)->addr32[1] == (b)->addr32[1] && \
|
|
(a)->addr32[0] == (b)->addr32[0])) \
|
|
|
|
#define PF_ANEQ(a, b, c) \
|
|
((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \
|
|
(c == AF_INET6 && (a)->addr32[3] != (b)->addr32[3] && \
|
|
(a)->addr32[1] != (b)->addr32[1] || \
|
|
(a)->addr32[2] != (b)->addr32[2] || \
|
|
(a)->addr32[3] != (b)->addr32[3])) \
|
|
|
|
#define PF_AZERO(a, c) \
|
|
((c == AF_INET && !(a)->addr32[0]) || \
|
|
(c == AF_INET6 && !(a)->addr32[0] && !(a)->addr32[1] && \
|
|
!(a)->addr32[2] && !(a)->addr32[3] )) \
|
|
|
|
#define PF_MATCHA(n, a, m, b, f) \
|
|
pf_match_addr(n, a, m, b, f)
|
|
|
|
#define PF_ACPY(a, b, f) \
|
|
pf_addrcpy(a, b, f)
|
|
|
|
#define PF_AINC(a, f) \
|
|
pf_addr_inc(a, f)
|
|
|
|
#define PF_POOLMASK(a, b, c, d, f) \
|
|
pf_poolmask(a, b, c, d, f)
|
|
|
|
#else
|
|
|
|
/* Just IPv6 */
|
|
|
|
#ifdef PF_INET6_ONLY
|
|
|
|
#define PF_AEQ(a, b, c) \
|
|
((a)->addr32[3] == (b)->addr32[3] && \
|
|
(a)->addr32[2] == (b)->addr32[2] && \
|
|
(a)->addr32[1] == (b)->addr32[1] && \
|
|
(a)->addr32[0] == (b)->addr32[0]) \
|
|
|
|
#define PF_ANEQ(a, b, c) \
|
|
((a)->addr32[3] != (b)->addr32[3] || \
|
|
(a)->addr32[2] != (b)->addr32[2] || \
|
|
(a)->addr32[1] != (b)->addr32[1] || \
|
|
(a)->addr32[0] != (b)->addr32[0]) \
|
|
|
|
#define PF_AZERO(a, c) \
|
|
(!(a)->addr32[0] && \
|
|
!(a)->addr32[1] && \
|
|
!(a)->addr32[2] && \
|
|
!(a)->addr32[3] ) \
|
|
|
|
#define PF_MATCHA(n, a, m, b, f) \
|
|
pf_match_addr(n, a, m, b, f)
|
|
|
|
#define PF_ACPY(a, b, f) \
|
|
pf_addrcpy(a, b, f)
|
|
|
|
#define PF_AINC(a, f) \
|
|
pf_addr_inc(a, f)
|
|
|
|
#define PF_POOLMASK(a, b, c, d, f) \
|
|
pf_poolmask(a, b, c, d, f)
|
|
|
|
#else
|
|
|
|
/* Just IPv4 */
|
|
#ifdef PF_INET_ONLY
|
|
|
|
#define PF_AEQ(a, b, c) \
|
|
((a)->addr32[0] == (b)->addr32[0])
|
|
|
|
#define PF_ANEQ(a, b, c) \
|
|
((a)->addr32[0] != (b)->addr32[0])
|
|
|
|
#define PF_AZERO(a, c) \
|
|
(!(a)->addr32[0])
|
|
|
|
#define PF_MATCHA(n, a, m, b, f) \
|
|
pf_match_addr(n, a, m, b, f)
|
|
|
|
#define PF_ACPY(a, b, f) \
|
|
(a)->v4.s_addr = (b)->v4.s_addr
|
|
|
|
#define PF_AINC(a, f) \
|
|
do { \
|
|
(a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \
|
|
} while (0)
|
|
|
|
#define PF_POOLMASK(a, b, c, d, f) \
|
|
do { \
|
|
(a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \
|
|
(((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \
|
|
} while (0)
|
|
|
|
#endif /* PF_INET_ONLY */
|
|
#endif /* PF_INET6_ONLY */
|
|
#endif /* PF_INET_INET6 */
|
|
|
|
/*
|
|
* XXX callers not FIB-aware in our version of pf yet.
|
|
* OpenBSD fixed it later it seems, 2010/05/07 13:33:16 claudio.
|
|
*/
|
|
#define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid) \
|
|
( \
|
|
(((aw)->type == PF_ADDR_NOROUTE && \
|
|
pf_routable((x), (af), NULL, (rtid))) || \
|
|
(((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \
|
|
pf_routable((x), (af), (ifp), (rtid))) || \
|
|
((aw)->type == PF_ADDR_TABLE && \
|
|
!pfr_match_addr((aw)->p.tbl, (x), (af))) || \
|
|
((aw)->type == PF_ADDR_DYNIFTL && \
|
|
!pfi_match_addr((aw)->p.dyn, (x), (af))) || \
|
|
((aw)->type == PF_ADDR_RANGE && \
|
|
!pf_match_addr_range(&(aw)->v.a.addr, \
|
|
&(aw)->v.a.mask, (x), (af))) || \
|
|
((aw)->type == PF_ADDR_ADDRMASK && \
|
|
!PF_AZERO(&(aw)->v.a.mask, (af)) && \
|
|
!PF_MATCHA(0, &(aw)->v.a.addr, \
|
|
&(aw)->v.a.mask, (x), (af))))) != \
|
|
(neg) \
|
|
)
|
|
|
|
|
|
struct pf_rule_uid {
|
|
uid_t uid[2];
|
|
u_int8_t op;
|
|
};
|
|
|
|
struct pf_rule_gid {
|
|
uid_t gid[2];
|
|
u_int8_t op;
|
|
};
|
|
|
|
struct pf_rule_addr {
|
|
struct pf_addr_wrap addr;
|
|
u_int16_t port[2];
|
|
u_int8_t neg;
|
|
u_int8_t port_op;
|
|
};
|
|
|
|
struct pf_pooladdr {
|
|
struct pf_addr_wrap addr;
|
|
TAILQ_ENTRY(pf_pooladdr) entries;
|
|
char ifname[IFNAMSIZ];
|
|
struct pfi_kif *kif;
|
|
};
|
|
|
|
TAILQ_HEAD(pf_palist, pf_pooladdr);
|
|
|
|
struct pf_poolhashkey {
|
|
union {
|
|
u_int8_t key8[16];
|
|
u_int16_t key16[8];
|
|
u_int32_t key32[4];
|
|
} pfk; /* 128-bit hash key */
|
|
#define key8 pfk.key8
|
|
#define key16 pfk.key16
|
|
#define key32 pfk.key32
|
|
};
|
|
|
|
struct pf_pool {
|
|
struct pf_palist list;
|
|
struct pf_pooladdr *cur;
|
|
struct pf_poolhashkey key;
|
|
struct pf_addr counter;
|
|
int tblidx;
|
|
u_int16_t proxy_port[2];
|
|
u_int8_t opts;
|
|
};
|
|
|
|
|
|
/* A packed Operating System description for fingerprinting */
|
|
typedef u_int32_t pf_osfp_t;
|
|
#define PF_OSFP_ANY ((pf_osfp_t)0)
|
|
#define PF_OSFP_UNKNOWN ((pf_osfp_t)-1)
|
|
#define PF_OSFP_NOMATCH ((pf_osfp_t)-2)
|
|
|
|
struct pf_osfp_entry {
|
|
SLIST_ENTRY(pf_osfp_entry) fp_entry;
|
|
pf_osfp_t fp_os;
|
|
int fp_enflags;
|
|
#define PF_OSFP_EXPANDED 0x001 /* expanded entry */
|
|
#define PF_OSFP_GENERIC 0x002 /* generic signature */
|
|
#define PF_OSFP_NODETAIL 0x004 /* no p0f details */
|
|
#define PF_OSFP_LEN 32
|
|
char fp_class_nm[PF_OSFP_LEN];
|
|
char fp_version_nm[PF_OSFP_LEN];
|
|
char fp_subtype_nm[PF_OSFP_LEN];
|
|
};
|
|
#define PF_OSFP_ENTRY_EQ(a, b) \
|
|
((a)->fp_os == (b)->fp_os && \
|
|
memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \
|
|
memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \
|
|
memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0)
|
|
|
|
/* handle pf_osfp_t packing */
|
|
#define _FP_RESERVED_BIT 1 /* For the special negative #defines */
|
|
#define _FP_UNUSED_BITS 1
|
|
#define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */
|
|
#define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */
|
|
#define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */
|
|
#define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \
|
|
(class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \
|
|
((1 << _FP_CLASS_BITS) - 1); \
|
|
(version) = ((osfp) >> _FP_SUBTYPE_BITS) & \
|
|
((1 << _FP_VERSION_BITS) - 1);\
|
|
(subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \
|
|
} while(0)
|
|
#define PF_OSFP_PACK(osfp, class, version, subtype) do { \
|
|
(osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \
|
|
+ _FP_SUBTYPE_BITS); \
|
|
(osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \
|
|
_FP_SUBTYPE_BITS; \
|
|
(osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \
|
|
} while(0)
|
|
|
|
/* the fingerprint of an OSes TCP SYN packet */
|
|
typedef u_int64_t pf_tcpopts_t;
|
|
struct pf_os_fingerprint {
|
|
SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */
|
|
pf_tcpopts_t fp_tcpopts; /* packed TCP options */
|
|
u_int16_t fp_wsize; /* TCP window size */
|
|
u_int16_t fp_psize; /* ip->ip_len */
|
|
u_int16_t fp_mss; /* TCP MSS */
|
|
u_int16_t fp_flags;
|
|
#define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */
|
|
#define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */
|
|
#define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */
|
|
#define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */
|
|
#define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */
|
|
#define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */
|
|
#define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */
|
|
#define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */
|
|
#define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */
|
|
#define PF_OSFP_MSS 0x0200 /* TCP MSS */
|
|
#define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */
|
|
#define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */
|
|
#define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */
|
|
#define PF_OSFP_TS0 0x2000 /* Zero timestamp */
|
|
#define PF_OSFP_INET6 0x4000 /* IPv6 */
|
|
u_int8_t fp_optcnt; /* TCP option count */
|
|
u_int8_t fp_wscale; /* TCP window scaling */
|
|
u_int8_t fp_ttl; /* IPv4 TTL */
|
|
#define PF_OSFP_MAXTTL_OFFSET 40
|
|
/* TCP options packing */
|
|
#define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */
|
|
#define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */
|
|
#define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */
|
|
#define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */
|
|
#define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */
|
|
#define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */
|
|
#define PF_OSFP_MAX_OPTS \
|
|
(sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \
|
|
/ PF_OSFP_TCPOPT_BITS
|
|
|
|
SLIST_ENTRY(pf_os_fingerprint) fp_next;
|
|
};
|
|
|
|
struct pf_osfp_ioctl {
|
|
struct pf_osfp_entry fp_os;
|
|
pf_tcpopts_t fp_tcpopts; /* packed TCP options */
|
|
u_int16_t fp_wsize; /* TCP window size */
|
|
u_int16_t fp_psize; /* ip->ip_len */
|
|
u_int16_t fp_mss; /* TCP MSS */
|
|
u_int16_t fp_flags;
|
|
u_int8_t fp_optcnt; /* TCP option count */
|
|
u_int8_t fp_wscale; /* TCP window scaling */
|
|
u_int8_t fp_ttl; /* IPv4 TTL */
|
|
|
|
int fp_getnum; /* DIOCOSFPGET number */
|
|
};
|
|
|
|
|
|
union pf_rule_ptr {
|
|
struct pf_rule *ptr;
|
|
u_int32_t nr;
|
|
};
|
|
|
|
#define PF_ANCHOR_NAME_SIZE 64
|
|
|
|
struct pf_rule {
|
|
struct pf_rule_addr src;
|
|
struct pf_rule_addr dst;
|
|
#define PF_SKIP_IFP 0
|
|
#define PF_SKIP_DIR 1
|
|
#define PF_SKIP_AF 2
|
|
#define PF_SKIP_PROTO 3
|
|
#define PF_SKIP_SRC_ADDR 4
|
|
#define PF_SKIP_SRC_PORT 5
|
|
#define PF_SKIP_DST_ADDR 6
|
|
#define PF_SKIP_DST_PORT 7
|
|
#define PF_SKIP_COUNT 8
|
|
union pf_rule_ptr skip[PF_SKIP_COUNT];
|
|
#define PF_RULE_LABEL_SIZE 64
|
|
char label[PF_RULE_LABEL_SIZE];
|
|
char ifname[IFNAMSIZ];
|
|
char qname[PF_QNAME_SIZE];
|
|
char pqname[PF_QNAME_SIZE];
|
|
#define PF_TAG_NAME_SIZE 64
|
|
char tagname[PF_TAG_NAME_SIZE];
|
|
char match_tagname[PF_TAG_NAME_SIZE];
|
|
|
|
char overload_tblname[PF_TABLE_NAME_SIZE];
|
|
|
|
TAILQ_ENTRY(pf_rule) entries;
|
|
struct pf_pool rpool;
|
|
|
|
u_int64_t evaluations;
|
|
u_int64_t packets[2];
|
|
u_int64_t bytes[2];
|
|
|
|
struct pfi_kif *kif;
|
|
struct pf_anchor *anchor;
|
|
struct pfr_ktable *overload_tbl;
|
|
|
|
pf_osfp_t os_fingerprint;
|
|
|
|
int rtableid;
|
|
u_int32_t timeout[PFTM_MAX];
|
|
u_int32_t max_states;
|
|
u_int32_t max_src_nodes;
|
|
u_int32_t max_src_states;
|
|
u_int32_t max_src_conn;
|
|
struct {
|
|
u_int32_t limit;
|
|
u_int32_t seconds;
|
|
} max_src_conn_rate;
|
|
u_int32_t qid;
|
|
u_int32_t pqid;
|
|
u_int32_t rt_listid;
|
|
u_int32_t nr;
|
|
u_int32_t prob;
|
|
uid_t cuid;
|
|
pid_t cpid;
|
|
|
|
counter_u64_t states_cur;
|
|
counter_u64_t states_tot;
|
|
counter_u64_t src_nodes;
|
|
|
|
u_int16_t return_icmp;
|
|
u_int16_t return_icmp6;
|
|
u_int16_t max_mss;
|
|
u_int16_t tag;
|
|
u_int16_t match_tag;
|
|
u_int16_t spare2; /* netgraph */
|
|
|
|
struct pf_rule_uid uid;
|
|
struct pf_rule_gid gid;
|
|
|
|
u_int32_t rule_flag;
|
|
u_int8_t action;
|
|
u_int8_t direction;
|
|
u_int8_t log;
|
|
u_int8_t logif;
|
|
u_int8_t quick;
|
|
u_int8_t ifnot;
|
|
u_int8_t match_tag_not;
|
|
u_int8_t natpass;
|
|
|
|
#define PF_STATE_NORMAL 0x1
|
|
#define PF_STATE_MODULATE 0x2
|
|
#define PF_STATE_SYNPROXY 0x3
|
|
u_int8_t keep_state;
|
|
sa_family_t af;
|
|
u_int8_t proto;
|
|
u_int8_t type;
|
|
u_int8_t code;
|
|
u_int8_t flags;
|
|
u_int8_t flagset;
|
|
u_int8_t min_ttl;
|
|
u_int8_t allow_opts;
|
|
u_int8_t rt;
|
|
u_int8_t return_ttl;
|
|
u_int8_t tos;
|
|
u_int8_t set_tos;
|
|
u_int8_t anchor_relative;
|
|
u_int8_t anchor_wildcard;
|
|
|
|
#define PF_FLUSH 0x01
|
|
#define PF_FLUSH_GLOBAL 0x02
|
|
u_int8_t flush;
|
|
|
|
struct {
|
|
struct pf_addr addr;
|
|
u_int16_t port;
|
|
} divert;
|
|
|
|
uint64_t u_states_cur;
|
|
uint64_t u_states_tot;
|
|
uint64_t u_src_nodes;
|
|
};
|
|
|
|
/* rule flags */
|
|
#define PFRULE_DROP 0x0000
|
|
#define PFRULE_RETURNRST 0x0001
|
|
#define PFRULE_FRAGMENT 0x0002
|
|
#define PFRULE_RETURNICMP 0x0004
|
|
#define PFRULE_RETURN 0x0008
|
|
#define PFRULE_NOSYNC 0x0010
|
|
#define PFRULE_SRCTRACK 0x0020 /* track source states */
|
|
#define PFRULE_RULESRCTRACK 0x0040 /* per rule */
|
|
#define PFRULE_REFS 0x0080 /* rule has references */
|
|
|
|
/* scrub flags */
|
|
#define PFRULE_NODF 0x0100
|
|
#define PFRULE_RANDOMID 0x0800
|
|
#define PFRULE_REASSEMBLE_TCP 0x1000
|
|
#define PFRULE_SET_TOS 0x2000
|
|
|
|
/* rule flags again */
|
|
#define PFRULE_IFBOUND 0x00010000 /* if-bound */
|
|
#define PFRULE_STATESLOPPY 0x00020000 /* sloppy state tracking */
|
|
|
|
#define PFSTATE_HIWAT 10000 /* default state table size */
|
|
#define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */
|
|
#define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */
|
|
|
|
|
|
struct pf_threshold {
|
|
u_int32_t limit;
|
|
#define PF_THRESHOLD_MULT 1000
|
|
#define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT
|
|
u_int32_t seconds;
|
|
u_int32_t count;
|
|
u_int32_t last;
|
|
};
|
|
|
|
struct pf_src_node {
|
|
LIST_ENTRY(pf_src_node) entry;
|
|
struct pf_addr addr;
|
|
struct pf_addr raddr;
|
|
union pf_rule_ptr rule;
|
|
struct pfi_kif *kif;
|
|
u_int64_t bytes[2];
|
|
u_int64_t packets[2];
|
|
u_int32_t states;
|
|
u_int32_t conn;
|
|
struct pf_threshold conn_rate;
|
|
u_int32_t creation;
|
|
u_int32_t expire;
|
|
sa_family_t af;
|
|
u_int8_t ruletype;
|
|
};
|
|
|
|
#define PFSNODE_HIWAT 10000 /* default source node table size */
|
|
|
|
struct pf_state_scrub {
|
|
struct timeval pfss_last; /* time received last packet */
|
|
u_int32_t pfss_tsecr; /* last echoed timestamp */
|
|
u_int32_t pfss_tsval; /* largest timestamp */
|
|
u_int32_t pfss_tsval0; /* original timestamp */
|
|
u_int16_t pfss_flags;
|
|
#define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */
|
|
#define PFSS_PAWS 0x0010 /* stricter PAWS checks */
|
|
#define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */
|
|
#define PFSS_DATA_TS 0x0040 /* timestamp on data packets */
|
|
#define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */
|
|
u_int8_t pfss_ttl; /* stashed TTL */
|
|
u_int8_t pad;
|
|
u_int32_t pfss_ts_mod; /* timestamp modulation */
|
|
};
|
|
|
|
struct pf_state_host {
|
|
struct pf_addr addr;
|
|
u_int16_t port;
|
|
u_int16_t pad;
|
|
};
|
|
|
|
struct pf_state_peer {
|
|
struct pf_state_scrub *scrub; /* state is scrubbed */
|
|
u_int32_t seqlo; /* Max sequence number sent */
|
|
u_int32_t seqhi; /* Max the other end ACKd + win */
|
|
u_int32_t seqdiff; /* Sequence number modulator */
|
|
u_int16_t max_win; /* largest window (pre scaling) */
|
|
u_int16_t mss; /* Maximum segment size option */
|
|
u_int8_t state; /* active state level */
|
|
u_int8_t wscale; /* window scaling factor */
|
|
u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */
|
|
u_int8_t pad[1];
|
|
};
|
|
|
|
/* Keep synced with struct pf_state_key. */
|
|
struct pf_state_key_cmp {
|
|
struct pf_addr addr[2];
|
|
u_int16_t port[2];
|
|
sa_family_t af;
|
|
u_int8_t proto;
|
|
u_int8_t pad[2];
|
|
};
|
|
|
|
struct pf_state_key {
|
|
struct pf_addr addr[2];
|
|
u_int16_t port[2];
|
|
sa_family_t af;
|
|
u_int8_t proto;
|
|
u_int8_t pad[2];
|
|
|
|
LIST_ENTRY(pf_state_key) entry;
|
|
TAILQ_HEAD(, pf_state) states[2];
|
|
};
|
|
|
|
/* Keep synced with struct pf_state. */
|
|
struct pf_state_cmp {
|
|
u_int64_t id;
|
|
u_int32_t creatorid;
|
|
u_int8_t direction;
|
|
u_int8_t pad[3];
|
|
};
|
|
|
|
struct pf_state {
|
|
u_int64_t id;
|
|
u_int32_t creatorid;
|
|
u_int8_t direction;
|
|
u_int8_t pad[3];
|
|
|
|
u_int refs;
|
|
TAILQ_ENTRY(pf_state) sync_list;
|
|
TAILQ_ENTRY(pf_state) key_list[2];
|
|
LIST_ENTRY(pf_state) entry;
|
|
struct pf_state_peer src;
|
|
struct pf_state_peer dst;
|
|
union pf_rule_ptr rule;
|
|
union pf_rule_ptr anchor;
|
|
union pf_rule_ptr nat_rule;
|
|
struct pf_addr rt_addr;
|
|
struct pf_state_key *key[2]; /* addresses stack and wire */
|
|
struct pfi_kif *kif;
|
|
struct pfi_kif *rt_kif;
|
|
struct pf_src_node *src_node;
|
|
struct pf_src_node *nat_src_node;
|
|
u_int64_t packets[2];
|
|
u_int64_t bytes[2];
|
|
u_int32_t creation;
|
|
u_int32_t expire;
|
|
u_int32_t pfsync_time;
|
|
u_int16_t tag;
|
|
u_int8_t log;
|
|
u_int8_t state_flags;
|
|
#define PFSTATE_ALLOWOPTS 0x01
|
|
#define PFSTATE_SLOPPY 0x02
|
|
/* was PFSTATE_PFLOW 0x04 */
|
|
#define PFSTATE_NOSYNC 0x08
|
|
#define PFSTATE_ACK 0x10
|
|
u_int8_t timeout;
|
|
u_int8_t sync_state; /* PFSYNC_S_x */
|
|
|
|
/* XXX */
|
|
u_int8_t sync_updates;
|
|
u_int8_t _tail[3];
|
|
};
|
|
|
|
/*
|
|
* Unified state structures for pulling states out of the kernel
|
|
* used by pfsync(4) and the pf(4) ioctl.
|
|
*/
|
|
struct pfsync_state_scrub {
|
|
u_int16_t pfss_flags;
|
|
u_int8_t pfss_ttl; /* stashed TTL */
|
|
#define PFSYNC_SCRUB_FLAG_VALID 0x01
|
|
u_int8_t scrub_flag;
|
|
u_int32_t pfss_ts_mod; /* timestamp modulation */
|
|
} __packed;
|
|
|
|
struct pfsync_state_peer {
|
|
struct pfsync_state_scrub scrub; /* state is scrubbed */
|
|
u_int32_t seqlo; /* Max sequence number sent */
|
|
u_int32_t seqhi; /* Max the other end ACKd + win */
|
|
u_int32_t seqdiff; /* Sequence number modulator */
|
|
u_int16_t max_win; /* largest window (pre scaling) */
|
|
u_int16_t mss; /* Maximum segment size option */
|
|
u_int8_t state; /* active state level */
|
|
u_int8_t wscale; /* window scaling factor */
|
|
u_int8_t pad[6];
|
|
} __packed;
|
|
|
|
struct pfsync_state_key {
|
|
struct pf_addr addr[2];
|
|
u_int16_t port[2];
|
|
};
|
|
|
|
struct pfsync_state {
|
|
u_int64_t id;
|
|
char ifname[IFNAMSIZ];
|
|
struct pfsync_state_key key[2];
|
|
struct pfsync_state_peer src;
|
|
struct pfsync_state_peer dst;
|
|
struct pf_addr rt_addr;
|
|
u_int32_t rule;
|
|
u_int32_t anchor;
|
|
u_int32_t nat_rule;
|
|
u_int32_t creation;
|
|
u_int32_t expire;
|
|
u_int32_t packets[2][2];
|
|
u_int32_t bytes[2][2];
|
|
u_int32_t creatorid;
|
|
sa_family_t af;
|
|
u_int8_t proto;
|
|
u_int8_t direction;
|
|
u_int8_t __spare[2];
|
|
u_int8_t log;
|
|
u_int8_t state_flags;
|
|
u_int8_t timeout;
|
|
u_int8_t sync_flags;
|
|
u_int8_t updates;
|
|
} __packed;
|
|
|
|
#ifdef _KERNEL
|
|
/* pfsync */
|
|
typedef int pfsync_state_import_t(struct pfsync_state *, u_int8_t);
|
|
typedef void pfsync_insert_state_t(struct pf_state *);
|
|
typedef void pfsync_update_state_t(struct pf_state *);
|
|
typedef void pfsync_delete_state_t(struct pf_state *);
|
|
typedef void pfsync_clear_states_t(u_int32_t, const char *);
|
|
typedef int pfsync_defer_t(struct pf_state *, struct mbuf *);
|
|
|
|
extern pfsync_state_import_t *pfsync_state_import_ptr;
|
|
extern pfsync_insert_state_t *pfsync_insert_state_ptr;
|
|
extern pfsync_update_state_t *pfsync_update_state_ptr;
|
|
extern pfsync_delete_state_t *pfsync_delete_state_ptr;
|
|
extern pfsync_clear_states_t *pfsync_clear_states_ptr;
|
|
extern pfsync_defer_t *pfsync_defer_ptr;
|
|
|
|
void pfsync_state_export(struct pfsync_state *,
|
|
struct pf_state *);
|
|
|
|
/* pflog */
|
|
struct pf_ruleset;
|
|
struct pf_pdesc;
|
|
typedef int pflog_packet_t(struct pfi_kif *, struct mbuf *, sa_family_t,
|
|
u_int8_t, u_int8_t, struct pf_rule *, struct pf_rule *,
|
|
struct pf_ruleset *, struct pf_pdesc *, int);
|
|
extern pflog_packet_t *pflog_packet_ptr;
|
|
|
|
#define V_pf_end_threads VNET(pf_end_threads)
|
|
#endif /* _KERNEL */
|
|
|
|
#define PFSYNC_FLAG_SRCNODE 0x04
|
|
#define PFSYNC_FLAG_NATSRCNODE 0x08
|
|
|
|
/* for copies to/from network byte order */
|
|
/* ioctl interface also uses network byte order */
|
|
#define pf_state_peer_hton(s,d) do { \
|
|
(d)->seqlo = htonl((s)->seqlo); \
|
|
(d)->seqhi = htonl((s)->seqhi); \
|
|
(d)->seqdiff = htonl((s)->seqdiff); \
|
|
(d)->max_win = htons((s)->max_win); \
|
|
(d)->mss = htons((s)->mss); \
|
|
(d)->state = (s)->state; \
|
|
(d)->wscale = (s)->wscale; \
|
|
if ((s)->scrub) { \
|
|
(d)->scrub.pfss_flags = \
|
|
htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \
|
|
(d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \
|
|
(d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\
|
|
(d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \
|
|
} \
|
|
} while (0)
|
|
|
|
#define pf_state_peer_ntoh(s,d) do { \
|
|
(d)->seqlo = ntohl((s)->seqlo); \
|
|
(d)->seqhi = ntohl((s)->seqhi); \
|
|
(d)->seqdiff = ntohl((s)->seqdiff); \
|
|
(d)->max_win = ntohs((s)->max_win); \
|
|
(d)->mss = ntohs((s)->mss); \
|
|
(d)->state = (s)->state; \
|
|
(d)->wscale = (s)->wscale; \
|
|
if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \
|
|
(d)->scrub != NULL) { \
|
|
(d)->scrub->pfss_flags = \
|
|
ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \
|
|
(d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \
|
|
(d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\
|
|
} \
|
|
} while (0)
|
|
|
|
#define pf_state_counter_hton(s,d) do { \
|
|
d[0] = htonl((s>>32)&0xffffffff); \
|
|
d[1] = htonl(s&0xffffffff); \
|
|
} while (0)
|
|
|
|
#define pf_state_counter_from_pfsync(s) \
|
|
(((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1]))
|
|
|
|
#define pf_state_counter_ntoh(s,d) do { \
|
|
d = ntohl(s[0]); \
|
|
d = d<<32; \
|
|
d += ntohl(s[1]); \
|
|
} while (0)
|
|
|
|
TAILQ_HEAD(pf_rulequeue, pf_rule);
|
|
|
|
struct pf_anchor;
|
|
|
|
struct pf_ruleset {
|
|
struct {
|
|
struct pf_rulequeue queues[2];
|
|
struct {
|
|
struct pf_rulequeue *ptr;
|
|
struct pf_rule **ptr_array;
|
|
u_int32_t rcount;
|
|
u_int32_t ticket;
|
|
int open;
|
|
} active, inactive;
|
|
} rules[PF_RULESET_MAX];
|
|
struct pf_anchor *anchor;
|
|
u_int32_t tticket;
|
|
int tables;
|
|
int topen;
|
|
};
|
|
|
|
RB_HEAD(pf_anchor_global, pf_anchor);
|
|
RB_HEAD(pf_anchor_node, pf_anchor);
|
|
struct pf_anchor {
|
|
RB_ENTRY(pf_anchor) entry_global;
|
|
RB_ENTRY(pf_anchor) entry_node;
|
|
struct pf_anchor *parent;
|
|
struct pf_anchor_node children;
|
|
char name[PF_ANCHOR_NAME_SIZE];
|
|
char path[MAXPATHLEN];
|
|
struct pf_ruleset ruleset;
|
|
int refcnt; /* anchor rules */
|
|
int match; /* XXX: used for pfctl black magic */
|
|
};
|
|
RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare);
|
|
RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare);
|
|
|
|
#define PF_RESERVED_ANCHOR "_pf"
|
|
|
|
#define PFR_TFLAG_PERSIST 0x00000001
|
|
#define PFR_TFLAG_CONST 0x00000002
|
|
#define PFR_TFLAG_ACTIVE 0x00000004
|
|
#define PFR_TFLAG_INACTIVE 0x00000008
|
|
#define PFR_TFLAG_REFERENCED 0x00000010
|
|
#define PFR_TFLAG_REFDANCHOR 0x00000020
|
|
#define PFR_TFLAG_COUNTERS 0x00000040
|
|
/* Adjust masks below when adding flags. */
|
|
#define PFR_TFLAG_USRMASK (PFR_TFLAG_PERSIST | \
|
|
PFR_TFLAG_CONST | \
|
|
PFR_TFLAG_COUNTERS)
|
|
#define PFR_TFLAG_SETMASK (PFR_TFLAG_ACTIVE | \
|
|
PFR_TFLAG_INACTIVE | \
|
|
PFR_TFLAG_REFERENCED | \
|
|
PFR_TFLAG_REFDANCHOR)
|
|
#define PFR_TFLAG_ALLMASK (PFR_TFLAG_PERSIST | \
|
|
PFR_TFLAG_CONST | \
|
|
PFR_TFLAG_ACTIVE | \
|
|
PFR_TFLAG_INACTIVE | \
|
|
PFR_TFLAG_REFERENCED | \
|
|
PFR_TFLAG_REFDANCHOR | \
|
|
PFR_TFLAG_COUNTERS)
|
|
|
|
struct pf_anchor_stackframe;
|
|
|
|
struct pfr_table {
|
|
char pfrt_anchor[MAXPATHLEN];
|
|
char pfrt_name[PF_TABLE_NAME_SIZE];
|
|
u_int32_t pfrt_flags;
|
|
u_int8_t pfrt_fback;
|
|
};
|
|
|
|
enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED,
|
|
PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE,
|
|
PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX };
|
|
|
|
struct pfr_addr {
|
|
union {
|
|
struct in_addr _pfra_ip4addr;
|
|
struct in6_addr _pfra_ip6addr;
|
|
} pfra_u;
|
|
u_int8_t pfra_af;
|
|
u_int8_t pfra_net;
|
|
u_int8_t pfra_not;
|
|
u_int8_t pfra_fback;
|
|
};
|
|
#define pfra_ip4addr pfra_u._pfra_ip4addr
|
|
#define pfra_ip6addr pfra_u._pfra_ip6addr
|
|
|
|
enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX };
|
|
enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX };
|
|
#define PFR_OP_XPASS PFR_OP_ADDR_MAX
|
|
|
|
struct pfr_astats {
|
|
struct pfr_addr pfras_a;
|
|
u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
|
|
u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
|
|
long pfras_tzero;
|
|
};
|
|
|
|
enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX };
|
|
|
|
struct pfr_tstats {
|
|
struct pfr_table pfrts_t;
|
|
u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
|
|
u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
|
|
u_int64_t pfrts_match;
|
|
u_int64_t pfrts_nomatch;
|
|
long pfrts_tzero;
|
|
int pfrts_cnt;
|
|
int pfrts_refcnt[PFR_REFCNT_MAX];
|
|
};
|
|
#define pfrts_name pfrts_t.pfrt_name
|
|
#define pfrts_flags pfrts_t.pfrt_flags
|
|
|
|
#ifndef _SOCKADDR_UNION_DEFINED
|
|
#define _SOCKADDR_UNION_DEFINED
|
|
union sockaddr_union {
|
|
struct sockaddr sa;
|
|
struct sockaddr_in sin;
|
|
struct sockaddr_in6 sin6;
|
|
};
|
|
#endif /* _SOCKADDR_UNION_DEFINED */
|
|
|
|
struct pfr_kcounters {
|
|
u_int64_t pfrkc_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
|
|
u_int64_t pfrkc_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
|
|
};
|
|
|
|
SLIST_HEAD(pfr_kentryworkq, pfr_kentry);
|
|
struct pfr_kentry {
|
|
struct radix_node pfrke_node[2];
|
|
union sockaddr_union pfrke_sa;
|
|
SLIST_ENTRY(pfr_kentry) pfrke_workq;
|
|
struct pfr_kcounters *pfrke_counters;
|
|
long pfrke_tzero;
|
|
u_int8_t pfrke_af;
|
|
u_int8_t pfrke_net;
|
|
u_int8_t pfrke_not;
|
|
u_int8_t pfrke_mark;
|
|
};
|
|
|
|
SLIST_HEAD(pfr_ktableworkq, pfr_ktable);
|
|
RB_HEAD(pfr_ktablehead, pfr_ktable);
|
|
struct pfr_ktable {
|
|
struct pfr_tstats pfrkt_ts;
|
|
RB_ENTRY(pfr_ktable) pfrkt_tree;
|
|
SLIST_ENTRY(pfr_ktable) pfrkt_workq;
|
|
struct radix_node_head *pfrkt_ip4;
|
|
struct radix_node_head *pfrkt_ip6;
|
|
struct pfr_ktable *pfrkt_shadow;
|
|
struct pfr_ktable *pfrkt_root;
|
|
struct pf_ruleset *pfrkt_rs;
|
|
long pfrkt_larg;
|
|
int pfrkt_nflags;
|
|
};
|
|
#define pfrkt_t pfrkt_ts.pfrts_t
|
|
#define pfrkt_name pfrkt_t.pfrt_name
|
|
#define pfrkt_anchor pfrkt_t.pfrt_anchor
|
|
#define pfrkt_ruleset pfrkt_t.pfrt_ruleset
|
|
#define pfrkt_flags pfrkt_t.pfrt_flags
|
|
#define pfrkt_cnt pfrkt_ts.pfrts_cnt
|
|
#define pfrkt_refcnt pfrkt_ts.pfrts_refcnt
|
|
#define pfrkt_packets pfrkt_ts.pfrts_packets
|
|
#define pfrkt_bytes pfrkt_ts.pfrts_bytes
|
|
#define pfrkt_match pfrkt_ts.pfrts_match
|
|
#define pfrkt_nomatch pfrkt_ts.pfrts_nomatch
|
|
#define pfrkt_tzero pfrkt_ts.pfrts_tzero
|
|
|
|
/* keep synced with pfi_kif, used in RB_FIND */
|
|
struct pfi_kif_cmp {
|
|
char pfik_name[IFNAMSIZ];
|
|
};
|
|
|
|
struct pfi_kif {
|
|
char pfik_name[IFNAMSIZ];
|
|
union {
|
|
RB_ENTRY(pfi_kif) _pfik_tree;
|
|
LIST_ENTRY(pfi_kif) _pfik_list;
|
|
} _pfik_glue;
|
|
#define pfik_tree _pfik_glue._pfik_tree
|
|
#define pfik_list _pfik_glue._pfik_list
|
|
u_int64_t pfik_packets[2][2][2];
|
|
u_int64_t pfik_bytes[2][2][2];
|
|
u_int32_t pfik_tzero;
|
|
u_int pfik_flags;
|
|
struct ifnet *pfik_ifp;
|
|
struct ifg_group *pfik_group;
|
|
u_int pfik_rulerefs;
|
|
TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs;
|
|
};
|
|
|
|
#define PFI_IFLAG_REFS 0x0001 /* has state references */
|
|
#define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */
|
|
|
|
struct pf_pdesc {
|
|
struct {
|
|
int done;
|
|
uid_t uid;
|
|
gid_t gid;
|
|
} lookup;
|
|
u_int64_t tot_len; /* Make Mickey money */
|
|
union {
|
|
struct tcphdr *tcp;
|
|
struct udphdr *udp;
|
|
struct icmp *icmp;
|
|
#ifdef INET6
|
|
struct icmp6_hdr *icmp6;
|
|
#endif /* INET6 */
|
|
void *any;
|
|
} hdr;
|
|
|
|
struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */
|
|
struct pf_addr *src; /* src address */
|
|
struct pf_addr *dst; /* dst address */
|
|
u_int16_t *sport;
|
|
u_int16_t *dport;
|
|
struct pf_mtag *pf_mtag;
|
|
|
|
u_int32_t p_len; /* total length of payload */
|
|
|
|
u_int16_t *ip_sum;
|
|
u_int16_t *proto_sum;
|
|
u_int16_t flags; /* Let SCRUB trigger behavior in
|
|
* state code. Easier than tags */
|
|
#define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */
|
|
#define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */
|
|
sa_family_t af;
|
|
u_int8_t proto;
|
|
u_int8_t tos;
|
|
u_int8_t dir; /* direction */
|
|
u_int8_t sidx; /* key index for source */
|
|
u_int8_t didx; /* key index for destination */
|
|
};
|
|
|
|
/* flags for RDR options */
|
|
#define PF_DPORT_RANGE 0x01 /* Dest port uses range */
|
|
#define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */
|
|
|
|
/* UDP state enumeration */
|
|
#define PFUDPS_NO_TRAFFIC 0
|
|
#define PFUDPS_SINGLE 1
|
|
#define PFUDPS_MULTIPLE 2
|
|
|
|
#define PFUDPS_NSTATES 3 /* number of state levels */
|
|
|
|
#define PFUDPS_NAMES { \
|
|
"NO_TRAFFIC", \
|
|
"SINGLE", \
|
|
"MULTIPLE", \
|
|
NULL \
|
|
}
|
|
|
|
/* Other protocol state enumeration */
|
|
#define PFOTHERS_NO_TRAFFIC 0
|
|
#define PFOTHERS_SINGLE 1
|
|
#define PFOTHERS_MULTIPLE 2
|
|
|
|
#define PFOTHERS_NSTATES 3 /* number of state levels */
|
|
|
|
#define PFOTHERS_NAMES { \
|
|
"NO_TRAFFIC", \
|
|
"SINGLE", \
|
|
"MULTIPLE", \
|
|
NULL \
|
|
}
|
|
|
|
#define ACTION_SET(a, x) \
|
|
do { \
|
|
if ((a) != NULL) \
|
|
*(a) = (x); \
|
|
} while (0)
|
|
|
|
#define REASON_SET(a, x) \
|
|
do { \
|
|
if ((a) != NULL) \
|
|
*(a) = (x); \
|
|
if (x < PFRES_MAX) \
|
|
counter_u64_add(V_pf_status.counters[x], 1); \
|
|
} while (0)
|
|
|
|
struct pf_kstatus {
|
|
counter_u64_t counters[PFRES_MAX]; /* reason for passing/dropping */
|
|
counter_u64_t lcounters[LCNT_MAX]; /* limit counters */
|
|
counter_u64_t fcounters[FCNT_MAX]; /* state operation counters */
|
|
counter_u64_t scounters[SCNT_MAX]; /* src_node operation counters */
|
|
uint32_t states;
|
|
uint32_t src_nodes;
|
|
uint32_t running;
|
|
uint32_t since;
|
|
uint32_t debug;
|
|
uint32_t hostid;
|
|
char ifname[IFNAMSIZ];
|
|
uint8_t pf_chksum[PF_MD5_DIGEST_LENGTH];
|
|
};
|
|
|
|
struct pf_divert {
|
|
union {
|
|
struct in_addr ipv4;
|
|
struct in6_addr ipv6;
|
|
} addr;
|
|
u_int16_t port;
|
|
};
|
|
|
|
#define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */
|
|
#define PFR_KENTRY_HIWAT 200000 /* Number of table entries */
|
|
|
|
/*
|
|
* ioctl parameter structures
|
|
*/
|
|
|
|
struct pfioc_pooladdr {
|
|
u_int32_t action;
|
|
u_int32_t ticket;
|
|
u_int32_t nr;
|
|
u_int32_t r_num;
|
|
u_int8_t r_action;
|
|
u_int8_t r_last;
|
|
u_int8_t af;
|
|
char anchor[MAXPATHLEN];
|
|
struct pf_pooladdr addr;
|
|
};
|
|
|
|
struct pfioc_rule {
|
|
u_int32_t action;
|
|
u_int32_t ticket;
|
|
u_int32_t pool_ticket;
|
|
u_int32_t nr;
|
|
char anchor[MAXPATHLEN];
|
|
char anchor_call[MAXPATHLEN];
|
|
struct pf_rule rule;
|
|
};
|
|
|
|
struct pfioc_natlook {
|
|
struct pf_addr saddr;
|
|
struct pf_addr daddr;
|
|
struct pf_addr rsaddr;
|
|
struct pf_addr rdaddr;
|
|
u_int16_t sport;
|
|
u_int16_t dport;
|
|
u_int16_t rsport;
|
|
u_int16_t rdport;
|
|
sa_family_t af;
|
|
u_int8_t proto;
|
|
u_int8_t direction;
|
|
};
|
|
|
|
struct pfioc_state {
|
|
struct pfsync_state state;
|
|
};
|
|
|
|
struct pfioc_src_node_kill {
|
|
sa_family_t psnk_af;
|
|
struct pf_rule_addr psnk_src;
|
|
struct pf_rule_addr psnk_dst;
|
|
u_int psnk_killed;
|
|
};
|
|
|
|
struct pfioc_state_kill {
|
|
struct pf_state_cmp psk_pfcmp;
|
|
sa_family_t psk_af;
|
|
int psk_proto;
|
|
struct pf_rule_addr psk_src;
|
|
struct pf_rule_addr psk_dst;
|
|
char psk_ifname[IFNAMSIZ];
|
|
char psk_label[PF_RULE_LABEL_SIZE];
|
|
u_int psk_killed;
|
|
};
|
|
|
|
struct pfioc_states {
|
|
int ps_len;
|
|
union {
|
|
caddr_t psu_buf;
|
|
struct pfsync_state *psu_states;
|
|
} ps_u;
|
|
#define ps_buf ps_u.psu_buf
|
|
#define ps_states ps_u.psu_states
|
|
};
|
|
|
|
struct pfioc_src_nodes {
|
|
int psn_len;
|
|
union {
|
|
caddr_t psu_buf;
|
|
struct pf_src_node *psu_src_nodes;
|
|
} psn_u;
|
|
#define psn_buf psn_u.psu_buf
|
|
#define psn_src_nodes psn_u.psu_src_nodes
|
|
};
|
|
|
|
struct pfioc_if {
|
|
char ifname[IFNAMSIZ];
|
|
};
|
|
|
|
struct pfioc_tm {
|
|
int timeout;
|
|
int seconds;
|
|
};
|
|
|
|
struct pfioc_limit {
|
|
int index;
|
|
unsigned limit;
|
|
};
|
|
|
|
struct pfioc_altq {
|
|
u_int32_t action;
|
|
u_int32_t ticket;
|
|
u_int32_t nr;
|
|
struct pf_altq altq;
|
|
};
|
|
|
|
struct pfioc_qstats {
|
|
u_int32_t ticket;
|
|
u_int32_t nr;
|
|
void *buf;
|
|
int nbytes;
|
|
u_int8_t scheduler;
|
|
};
|
|
|
|
struct pfioc_ruleset {
|
|
u_int32_t nr;
|
|
char path[MAXPATHLEN];
|
|
char name[PF_ANCHOR_NAME_SIZE];
|
|
};
|
|
|
|
#define PF_RULESET_ALTQ (PF_RULESET_MAX)
|
|
#define PF_RULESET_TABLE (PF_RULESET_MAX+1)
|
|
struct pfioc_trans {
|
|
int size; /* number of elements */
|
|
int esize; /* size of each element in bytes */
|
|
struct pfioc_trans_e {
|
|
int rs_num;
|
|
char anchor[MAXPATHLEN];
|
|
u_int32_t ticket;
|
|
} *array;
|
|
};
|
|
|
|
#define PFR_FLAG_ATOMIC 0x00000001 /* unused */
|
|
#define PFR_FLAG_DUMMY 0x00000002
|
|
#define PFR_FLAG_FEEDBACK 0x00000004
|
|
#define PFR_FLAG_CLSTATS 0x00000008
|
|
#define PFR_FLAG_ADDRSTOO 0x00000010
|
|
#define PFR_FLAG_REPLACE 0x00000020
|
|
#define PFR_FLAG_ALLRSETS 0x00000040
|
|
#define PFR_FLAG_ALLMASK 0x0000007F
|
|
#ifdef _KERNEL
|
|
#define PFR_FLAG_USERIOCTL 0x10000000
|
|
#endif
|
|
|
|
struct pfioc_table {
|
|
struct pfr_table pfrio_table;
|
|
void *pfrio_buffer;
|
|
int pfrio_esize;
|
|
int pfrio_size;
|
|
int pfrio_size2;
|
|
int pfrio_nadd;
|
|
int pfrio_ndel;
|
|
int pfrio_nchange;
|
|
int pfrio_flags;
|
|
u_int32_t pfrio_ticket;
|
|
};
|
|
#define pfrio_exists pfrio_nadd
|
|
#define pfrio_nzero pfrio_nadd
|
|
#define pfrio_nmatch pfrio_nadd
|
|
#define pfrio_naddr pfrio_size2
|
|
#define pfrio_setflag pfrio_size2
|
|
#define pfrio_clrflag pfrio_nadd
|
|
|
|
struct pfioc_iface {
|
|
char pfiio_name[IFNAMSIZ];
|
|
void *pfiio_buffer;
|
|
int pfiio_esize;
|
|
int pfiio_size;
|
|
int pfiio_nzero;
|
|
int pfiio_flags;
|
|
};
|
|
|
|
|
|
/*
|
|
* ioctl operations
|
|
*/
|
|
|
|
#define DIOCSTART _IO ('D', 1)
|
|
#define DIOCSTOP _IO ('D', 2)
|
|
#define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule)
|
|
#define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule)
|
|
#define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule)
|
|
/* XXX cut 8 - 17 */
|
|
#define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill)
|
|
#define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state)
|
|
#define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if)
|
|
#define DIOCGETSTATUS _IOWR('D', 21, struct pf_status)
|
|
#define DIOCCLRSTATUS _IO ('D', 22)
|
|
#define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook)
|
|
#define DIOCSETDEBUG _IOWR('D', 24, u_int32_t)
|
|
#define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states)
|
|
#define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule)
|
|
/* XXX cut 26 - 28 */
|
|
#define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm)
|
|
#define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm)
|
|
#define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state)
|
|
#define DIOCCLRRULECTRS _IO ('D', 38)
|
|
#define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit)
|
|
#define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit)
|
|
#define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill)
|
|
#define DIOCSTARTALTQ _IO ('D', 42)
|
|
#define DIOCSTOPALTQ _IO ('D', 43)
|
|
#define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq)
|
|
#define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq)
|
|
#define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq)
|
|
#define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq)
|
|
#define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats)
|
|
#define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr)
|
|
#define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr)
|
|
#define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr)
|
|
#define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr)
|
|
#define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr)
|
|
/* XXX cut 55 - 57 */
|
|
#define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset)
|
|
#define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset)
|
|
#define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table)
|
|
#define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table)
|
|
#define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table)
|
|
#define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table)
|
|
#define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table)
|
|
#define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table)
|
|
#define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table)
|
|
#define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table)
|
|
#define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table)
|
|
#define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table)
|
|
#define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table)
|
|
#define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table)
|
|
#define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table)
|
|
#define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table)
|
|
#define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table)
|
|
#define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table)
|
|
#define DIOCOSFPFLUSH _IO('D', 78)
|
|
#define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl)
|
|
#define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl)
|
|
#define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans)
|
|
#define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans)
|
|
#define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans)
|
|
#define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes)
|
|
#define DIOCCLRSRCNODES _IO('D', 85)
|
|
#define DIOCSETHOSTID _IOWR('D', 86, u_int32_t)
|
|
#define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface)
|
|
#define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface)
|
|
#define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface)
|
|
#define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill)
|
|
struct pf_ifspeed {
|
|
char ifname[IFNAMSIZ];
|
|
u_int32_t baudrate;
|
|
};
|
|
#define DIOCGIFSPEED _IOWR('D', 92, struct pf_ifspeed)
|
|
|
|
#ifdef _KERNEL
|
|
LIST_HEAD(pf_src_node_list, pf_src_node);
|
|
struct pf_srchash {
|
|
struct pf_src_node_list nodes;
|
|
struct mtx lock;
|
|
};
|
|
|
|
struct pf_keyhash {
|
|
LIST_HEAD(, pf_state_key) keys;
|
|
struct mtx lock;
|
|
};
|
|
|
|
struct pf_idhash {
|
|
LIST_HEAD(, pf_state) states;
|
|
struct mtx lock;
|
|
};
|
|
|
|
extern u_long pf_hashmask;
|
|
extern u_long pf_srchashmask;
|
|
#define PF_HASHSIZ (32768)
|
|
VNET_DECLARE(struct pf_keyhash *, pf_keyhash);
|
|
VNET_DECLARE(struct pf_idhash *, pf_idhash);
|
|
#define V_pf_keyhash VNET(pf_keyhash)
|
|
#define V_pf_idhash VNET(pf_idhash)
|
|
VNET_DECLARE(struct pf_srchash *, pf_srchash);
|
|
#define V_pf_srchash VNET(pf_srchash)
|
|
|
|
#define PF_IDHASH(s) (be64toh((s)->id) % (pf_hashmask + 1))
|
|
|
|
VNET_DECLARE(void *, pf_swi_cookie);
|
|
#define V_pf_swi_cookie VNET(pf_swi_cookie)
|
|
|
|
VNET_DECLARE(uint64_t, pf_stateid[MAXCPU]);
|
|
#define V_pf_stateid VNET(pf_stateid)
|
|
|
|
TAILQ_HEAD(pf_altqqueue, pf_altq);
|
|
VNET_DECLARE(struct pf_altqqueue, pf_altqs[2]);
|
|
#define V_pf_altqs VNET(pf_altqs)
|
|
VNET_DECLARE(struct pf_palist, pf_pabuf);
|
|
#define V_pf_pabuf VNET(pf_pabuf)
|
|
|
|
VNET_DECLARE(u_int32_t, ticket_altqs_active);
|
|
#define V_ticket_altqs_active VNET(ticket_altqs_active)
|
|
VNET_DECLARE(u_int32_t, ticket_altqs_inactive);
|
|
#define V_ticket_altqs_inactive VNET(ticket_altqs_inactive)
|
|
VNET_DECLARE(int, altqs_inactive_open);
|
|
#define V_altqs_inactive_open VNET(altqs_inactive_open)
|
|
VNET_DECLARE(u_int32_t, ticket_pabuf);
|
|
#define V_ticket_pabuf VNET(ticket_pabuf)
|
|
VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active);
|
|
#define V_pf_altqs_active VNET(pf_altqs_active)
|
|
VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive);
|
|
#define V_pf_altqs_inactive VNET(pf_altqs_inactive)
|
|
|
|
VNET_DECLARE(struct pf_rulequeue, pf_unlinked_rules);
|
|
#define V_pf_unlinked_rules VNET(pf_unlinked_rules)
|
|
|
|
void pf_initialize(void);
|
|
void pf_mtag_initialize(void);
|
|
void pf_mtag_cleanup(void);
|
|
void pf_cleanup(void);
|
|
|
|
struct pf_mtag *pf_get_mtag(struct mbuf *);
|
|
|
|
extern void pf_calc_skip_steps(struct pf_rulequeue *);
|
|
#ifdef ALTQ
|
|
extern void pf_altq_ifnet_event(struct ifnet *, int);
|
|
#endif
|
|
VNET_DECLARE(uma_zone_t, pf_state_z);
|
|
#define V_pf_state_z VNET(pf_state_z)
|
|
VNET_DECLARE(uma_zone_t, pf_state_key_z);
|
|
#define V_pf_state_key_z VNET(pf_state_key_z)
|
|
VNET_DECLARE(uma_zone_t, pf_state_scrub_z);
|
|
#define V_pf_state_scrub_z VNET(pf_state_scrub_z)
|
|
|
|
extern void pf_purge_thread(void *);
|
|
extern void pf_intr(void *);
|
|
extern void pf_purge_expired_src_nodes(void);
|
|
|
|
extern int pf_unlink_state(struct pf_state *, u_int);
|
|
#define PF_ENTER_LOCKED 0x00000001
|
|
#define PF_RETURN_LOCKED 0x00000002
|
|
extern int pf_state_insert(struct pfi_kif *,
|
|
struct pf_state_key *,
|
|
struct pf_state_key *,
|
|
struct pf_state *);
|
|
extern void pf_free_state(struct pf_state *);
|
|
|
|
static __inline void
|
|
pf_ref_state(struct pf_state *s)
|
|
{
|
|
|
|
refcount_acquire(&s->refs);
|
|
}
|
|
|
|
static __inline int
|
|
pf_release_state(struct pf_state *s)
|
|
{
|
|
|
|
if (refcount_release(&s->refs)) {
|
|
pf_free_state(s);
|
|
return (1);
|
|
} else
|
|
return (0);
|
|
}
|
|
|
|
extern struct pf_state *pf_find_state_byid(uint64_t, uint32_t);
|
|
extern struct pf_state *pf_find_state_all(struct pf_state_key_cmp *,
|
|
u_int, int *);
|
|
extern struct pf_src_node *pf_find_src_node(struct pf_addr *,
|
|
struct pf_rule *, sa_family_t, int);
|
|
extern void pf_unlink_src_node(struct pf_src_node *);
|
|
extern u_int pf_free_src_nodes(struct pf_src_node_list *);
|
|
extern void pf_print_state(struct pf_state *);
|
|
extern void pf_print_flags(u_int8_t);
|
|
extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t,
|
|
u_int8_t);
|
|
extern u_int16_t pf_proto_cksum_fixup(struct mbuf *, u_int16_t,
|
|
u_int16_t, u_int16_t, u_int8_t);
|
|
|
|
VNET_DECLARE(struct ifnet *, sync_ifp);
|
|
#define V_sync_ifp VNET(sync_ifp);
|
|
VNET_DECLARE(struct pf_rule, pf_default_rule);
|
|
#define V_pf_default_rule VNET(pf_default_rule)
|
|
extern void pf_addrcpy(struct pf_addr *, struct pf_addr *,
|
|
u_int8_t);
|
|
void pf_free_rule(struct pf_rule *);
|
|
|
|
#ifdef INET
|
|
int pf_test(int, struct ifnet *, struct mbuf **, struct inpcb *);
|
|
int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *,
|
|
struct pf_pdesc *);
|
|
#endif /* INET */
|
|
|
|
#ifdef INET6
|
|
int pf_test6(int, struct ifnet *, struct mbuf **, struct inpcb *);
|
|
int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *,
|
|
struct pf_pdesc *);
|
|
void pf_poolmask(struct pf_addr *, struct pf_addr*,
|
|
struct pf_addr *, struct pf_addr *, u_int8_t);
|
|
void pf_addr_inc(struct pf_addr *, sa_family_t);
|
|
int pf_refragment6(struct ifnet *, struct mbuf **, struct m_tag *);
|
|
#endif /* INET6 */
|
|
|
|
u_int32_t pf_new_isn(struct pf_state *);
|
|
void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *,
|
|
sa_family_t);
|
|
void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t);
|
|
void pf_change_proto_a(struct mbuf *, void *, u_int16_t *, u_int32_t,
|
|
u_int8_t);
|
|
void pf_change_tcp_a(struct mbuf *, void *, u_int16_t *, u_int32_t);
|
|
void pf_send_deferred_syn(struct pf_state *);
|
|
int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *,
|
|
struct pf_addr *, sa_family_t);
|
|
int pf_match_addr_range(struct pf_addr *, struct pf_addr *,
|
|
struct pf_addr *, sa_family_t);
|
|
int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t);
|
|
|
|
void pf_normalize_init(void);
|
|
void pf_normalize_cleanup(void);
|
|
int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *,
|
|
struct pf_pdesc *);
|
|
void pf_normalize_tcp_cleanup(struct pf_state *);
|
|
int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *,
|
|
struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *);
|
|
int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *,
|
|
u_short *, struct tcphdr *, struct pf_state *,
|
|
struct pf_state_peer *, struct pf_state_peer *, int *);
|
|
u_int32_t
|
|
pf_state_expires(const struct pf_state *);
|
|
void pf_purge_expired_fragments(void);
|
|
int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *,
|
|
int);
|
|
int pf_socket_lookup(int, struct pf_pdesc *, struct mbuf *);
|
|
struct pf_state_key *pf_alloc_state_key(int);
|
|
void pfr_initialize(void);
|
|
void pfr_cleanup(void);
|
|
int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t);
|
|
void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t,
|
|
u_int64_t, int, int, int);
|
|
int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, sa_family_t);
|
|
void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *);
|
|
struct pfr_ktable *
|
|
pfr_attach_table(struct pf_ruleset *, char *);
|
|
void pfr_detach_table(struct pfr_ktable *);
|
|
int pfr_clr_tables(struct pfr_table *, int *, int);
|
|
int pfr_add_tables(struct pfr_table *, int, int *, int);
|
|
int pfr_del_tables(struct pfr_table *, int, int *, int);
|
|
int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int);
|
|
int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int);
|
|
int pfr_clr_tstats(struct pfr_table *, int, int *, int);
|
|
int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int);
|
|
int pfr_clr_addrs(struct pfr_table *, int *, int);
|
|
int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long);
|
|
int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
|
|
int);
|
|
int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
|
|
int);
|
|
int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
|
|
int *, int *, int *, int, u_int32_t);
|
|
int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int);
|
|
int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int);
|
|
int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *,
|
|
int);
|
|
int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
|
|
int);
|
|
int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int);
|
|
int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int);
|
|
int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int);
|
|
int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *,
|
|
int *, u_int32_t, int);
|
|
|
|
MALLOC_DECLARE(PFI_MTYPE);
|
|
VNET_DECLARE(struct pfi_kif *, pfi_all);
|
|
#define V_pfi_all VNET(pfi_all)
|
|
|
|
void pfi_initialize(void);
|
|
void pfi_cleanup(void);
|
|
void pfi_kif_ref(struct pfi_kif *);
|
|
void pfi_kif_unref(struct pfi_kif *);
|
|
struct pfi_kif *pfi_kif_find(const char *);
|
|
struct pfi_kif *pfi_kif_attach(struct pfi_kif *, const char *);
|
|
int pfi_kif_match(struct pfi_kif *, struct pfi_kif *);
|
|
void pfi_kif_purge(void);
|
|
int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *,
|
|
sa_family_t);
|
|
int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t);
|
|
void pfi_dynaddr_remove(struct pfi_dynaddr *);
|
|
void pfi_dynaddr_copyout(struct pf_addr_wrap *);
|
|
void pfi_update_status(const char *, struct pf_status *);
|
|
void pfi_get_ifaces(const char *, struct pfi_kif *, int *);
|
|
int pfi_set_flags(const char *, int);
|
|
int pfi_clear_flags(const char *, int);
|
|
|
|
int pf_match_tag(struct mbuf *, struct pf_rule *, int *, int);
|
|
int pf_tag_packet(struct mbuf *, struct pf_pdesc *, int);
|
|
int pf_addr_cmp(struct pf_addr *, struct pf_addr *,
|
|
sa_family_t);
|
|
void pf_qid2qname(u_int32_t, char *);
|
|
|
|
VNET_DECLARE(struct pf_kstatus, pf_status);
|
|
#define V_pf_status VNET(pf_status)
|
|
|
|
struct pf_limit {
|
|
uma_zone_t zone;
|
|
u_int limit;
|
|
};
|
|
VNET_DECLARE(struct pf_limit, pf_limits[PF_LIMIT_MAX]);
|
|
#define V_pf_limits VNET(pf_limits)
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
#ifdef _KERNEL
|
|
VNET_DECLARE(struct pf_anchor_global, pf_anchors);
|
|
#define V_pf_anchors VNET(pf_anchors)
|
|
VNET_DECLARE(struct pf_anchor, pf_main_anchor);
|
|
#define V_pf_main_anchor VNET(pf_main_anchor)
|
|
#define pf_main_ruleset V_pf_main_anchor.ruleset
|
|
#endif
|
|
|
|
/* these ruleset functions can be linked into userland programs (pfctl) */
|
|
int pf_get_ruleset_number(u_int8_t);
|
|
void pf_init_ruleset(struct pf_ruleset *);
|
|
int pf_anchor_setup(struct pf_rule *,
|
|
const struct pf_ruleset *, const char *);
|
|
int pf_anchor_copyout(const struct pf_ruleset *,
|
|
const struct pf_rule *, struct pfioc_rule *);
|
|
void pf_anchor_remove(struct pf_rule *);
|
|
void pf_remove_if_empty_ruleset(struct pf_ruleset *);
|
|
struct pf_ruleset *pf_find_ruleset(const char *);
|
|
struct pf_ruleset *pf_find_or_create_ruleset(const char *);
|
|
void pf_rs_initialize(void);
|
|
|
|
/* The fingerprint functions can be linked into userland programs (tcpdump) */
|
|
int pf_osfp_add(struct pf_osfp_ioctl *);
|
|
#ifdef _KERNEL
|
|
struct pf_osfp_enlist *
|
|
pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int,
|
|
const struct tcphdr *);
|
|
#endif /* _KERNEL */
|
|
void pf_osfp_flush(void);
|
|
int pf_osfp_get(struct pf_osfp_ioctl *);
|
|
int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t);
|
|
|
|
#ifdef _KERNEL
|
|
void pf_print_host(struct pf_addr *, u_int16_t, u_int8_t);
|
|
|
|
void pf_step_into_anchor(struct pf_anchor_stackframe *, int *,
|
|
struct pf_ruleset **, int, struct pf_rule **,
|
|
struct pf_rule **, int *);
|
|
int pf_step_out_of_anchor(struct pf_anchor_stackframe *, int *,
|
|
struct pf_ruleset **, int, struct pf_rule **,
|
|
struct pf_rule **, int *);
|
|
|
|
int pf_map_addr(u_int8_t, struct pf_rule *,
|
|
struct pf_addr *, struct pf_addr *,
|
|
struct pf_addr *, struct pf_src_node **);
|
|
struct pf_rule *pf_get_translation(struct pf_pdesc *, struct mbuf *,
|
|
int, int, struct pfi_kif *, struct pf_src_node **,
|
|
struct pf_state_key **, struct pf_state_key **,
|
|
struct pf_addr *, struct pf_addr *,
|
|
uint16_t, uint16_t, struct pf_anchor_stackframe *);
|
|
|
|
struct pf_state_key *pf_state_key_setup(struct pf_pdesc *, struct pf_addr *,
|
|
struct pf_addr *, u_int16_t, u_int16_t);
|
|
struct pf_state_key *pf_state_key_clone(struct pf_state_key *);
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* _NET_PFVAR_H_ */
|