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freebsd-nq/sys/net/pfvar.h
Kristof Provost 8e492101ec pf: add COMPAT_FREEBSD13 for DIOCKEEPCOUNTERS 
DIOCKEEPCOUNTERS used to overlap with DIOCGIFSPEEDV0, which has been
fixed in 14, but remains in stable/12 and stable/13.
Support the old, overlapping, call under COMPAT_FREEBSD13.

Reviewed by:	jhb
Sponsored by:	Rubicon Communications, LLC ("Netgate")
Differential Revision:	https://reviews.freebsd.org/D33001
2021-11-17 03:09:20 +01:00

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/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* 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/cpuset.h>
#include <sys/malloc.h>
#include <sys/nv.h>
#include <sys/refcount.h>
#include <sys/sdt.h>
#include <sys/sysctl.h>
#include <sys/smp.h>
#include <sys/lock.h>
#include <sys/rmlock.h>
#include <sys/tree.h>
#include <sys/seqc.h>
#include <vm/uma.h>
#include <net/radix.h>
#include <netinet/in.h>
#ifdef _KERNEL
#include <netinet/ip.h>
#include <netinet/tcp.h>
#include <netinet/udp.h>
#include <netinet/ip_icmp.h>
#include <netinet/icmp6.h>
#endif
#include <netpfil/pf/pf.h>
#include <netpfil/pf/pf_altq.h>
#include <netpfil/pf/pf_mtag.h>
#ifdef _KERNEL
#if defined(__arm__)
#define PF_WANT_32_TO_64_COUNTER
#endif
/*
* A hybrid of 32-bit and 64-bit counters which can be used on platforms where
* counter(9) is very expensive.
*
* As 32-bit counters are expected to overflow, a periodic job sums them up to
* a saved 64-bit state. Fetching the value still walks all CPUs to get the most
* current snapshot.
*/
#ifdef PF_WANT_32_TO_64_COUNTER
struct pf_counter_u64_pcpu {
u_int32_t current;
u_int32_t snapshot;
};
struct pf_counter_u64 {
struct pf_counter_u64_pcpu *pfcu64_pcpu;
u_int64_t pfcu64_value;
seqc_t pfcu64_seqc;
};
static inline int
pf_counter_u64_init(struct pf_counter_u64 *pfcu64, int flags)
{
pfcu64->pfcu64_value = 0;
pfcu64->pfcu64_seqc = 0;
pfcu64->pfcu64_pcpu = uma_zalloc_pcpu(pcpu_zone_8, flags | M_ZERO);
if (__predict_false(pfcu64->pfcu64_pcpu == NULL))
return (ENOMEM);
return (0);
}
static inline void
pf_counter_u64_deinit(struct pf_counter_u64 *pfcu64)
{
uma_zfree_pcpu(pcpu_zone_8, pfcu64->pfcu64_pcpu);
}
static inline void
pf_counter_u64_critical_enter(void)
{
critical_enter();
}
static inline void
pf_counter_u64_critical_exit(void)
{
critical_exit();
}
static inline void
pf_counter_u64_add_protected(struct pf_counter_u64 *pfcu64, uint32_t n)
{
struct pf_counter_u64_pcpu *pcpu;
u_int32_t val;
MPASS(curthread->td_critnest > 0);
pcpu = zpcpu_get(pfcu64->pfcu64_pcpu);
val = atomic_load_int(&pcpu->current);
atomic_store_int(&pcpu->current, val + n);
}
static inline void
pf_counter_u64_add(struct pf_counter_u64 *pfcu64, uint32_t n)
{
critical_enter();
pf_counter_u64_add_protected(pfcu64, n);
critical_exit();
}
static inline u_int64_t
pf_counter_u64_periodic(struct pf_counter_u64 *pfcu64)
{
struct pf_counter_u64_pcpu *pcpu;
u_int64_t sum;
u_int32_t val;
int cpu;
MPASS(curthread->td_critnest > 0);
seqc_write_begin(&pfcu64->pfcu64_seqc);
sum = pfcu64->pfcu64_value;
CPU_FOREACH(cpu) {
pcpu = zpcpu_get_cpu(pfcu64->pfcu64_pcpu, cpu);
val = atomic_load_int(&pcpu->current);
sum += (uint32_t)(val - pcpu->snapshot);
pcpu->snapshot = val;
}
pfcu64->pfcu64_value = sum;
seqc_write_end(&pfcu64->pfcu64_seqc);
return (sum);
}
static inline u_int64_t
pf_counter_u64_fetch(struct pf_counter_u64 *pfcu64)
{
struct pf_counter_u64_pcpu *pcpu;
u_int64_t sum;
seqc_t seqc;
int cpu;
for (;;) {
seqc = seqc_read(&pfcu64->pfcu64_seqc);
sum = 0;
CPU_FOREACH(cpu) {
pcpu = zpcpu_get_cpu(pfcu64->pfcu64_pcpu, cpu);
sum += (uint32_t)(atomic_load_int(&pcpu->current) -pcpu->snapshot);
}
sum += pfcu64->pfcu64_value;
if (seqc_consistent(&pfcu64->pfcu64_seqc, seqc))
break;
}
return (sum);
}
static inline void
pf_counter_u64_zero_protected(struct pf_counter_u64 *pfcu64)
{
struct pf_counter_u64_pcpu *pcpu;
int cpu;
MPASS(curthread->td_critnest > 0);
seqc_write_begin(&pfcu64->pfcu64_seqc);
CPU_FOREACH(cpu) {
pcpu = zpcpu_get_cpu(pfcu64->pfcu64_pcpu, cpu);
pcpu->snapshot = atomic_load_int(&pcpu->current);
}
pfcu64->pfcu64_value = 0;
seqc_write_end(&pfcu64->pfcu64_seqc);
}
static inline void
pf_counter_u64_zero(struct pf_counter_u64 *pfcu64)
{
critical_enter();
pf_counter_u64_zero_protected(pfcu64);
critical_exit();
}
#else
struct pf_counter_u64 {
counter_u64_t counter;
};
static inline int
pf_counter_u64_init(struct pf_counter_u64 *pfcu64, int flags)
{
pfcu64->counter = counter_u64_alloc(flags);
if (__predict_false(pfcu64->counter == NULL))
return (ENOMEM);
return (0);
}
static inline void
pf_counter_u64_deinit(struct pf_counter_u64 *pfcu64)
{
counter_u64_free(pfcu64->counter);
}
static inline void
pf_counter_u64_critical_enter(void)
{
}
static inline void
pf_counter_u64_critical_exit(void)
{
}
static inline void
pf_counter_u64_add_protected(struct pf_counter_u64 *pfcu64, uint32_t n)
{
counter_u64_add(pfcu64->counter, n);
}
static inline void
pf_counter_u64_add(struct pf_counter_u64 *pfcu64, uint32_t n)
{
pf_counter_u64_add_protected(pfcu64, n);
}
static inline u_int64_t
pf_counter_u64_fetch(struct pf_counter_u64 *pfcu64)
{
return (counter_u64_fetch(pfcu64->counter));
}
static inline void
pf_counter_u64_zero_protected(struct pf_counter_u64 *pfcu64)
{
counter_u64_zero(pfcu64->counter);
}
static inline void
pf_counter_u64_zero(struct pf_counter_u64 *pfcu64)
{
pf_counter_u64_zero_protected(pfcu64);
}
#endif
SYSCTL_DECL(_net_pf);
MALLOC_DECLARE(M_PFHASH);
SDT_PROVIDER_DECLARE(pf);
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_kkif *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)
#ifdef INVARIANTS
#define PF_STATE_LOCK(s) \
do { \
struct pf_kstate *_s = (s); \
struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(_s)]; \
MPASS(_s->lock == &_ih->lock); \
mtx_lock(_s->lock); \
} while (0)
#define PF_STATE_UNLOCK(s) \
do { \
struct pf_kstate *_s = (s); \
struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(_s)]; \
MPASS(_s->lock == &_ih->lock); \
mtx_unlock(_s->lock); \
} while (0)
#else
#define PF_STATE_LOCK(s) mtx_lock(s->lock)
#define PF_STATE_UNLOCK(s) mtx_unlock(s->lock)
#endif
#ifdef INVARIANTS
#define PF_STATE_LOCK_ASSERT(s) \
do { \
struct pf_kstate *_s = (s); \
struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(_s)]; \
MPASS(_s->lock == &_ih->lock); \
PF_HASHROW_ASSERT(_ih); \
} while (0)
#else /* !INVARIANTS */
#define PF_STATE_LOCK_ASSERT(s) do {} while (0)
#endif /* INVARIANTS */
extern struct mtx_padalign pf_unlnkdrules_mtx;
#define PF_UNLNKDRULES_LOCK() mtx_lock(&pf_unlnkdrules_mtx)
#define PF_UNLNKDRULES_UNLOCK() mtx_unlock(&pf_unlnkdrules_mtx)
extern struct rmlock pf_rules_lock;
#define PF_RULES_RLOCK_TRACKER struct rm_priotracker _pf_rules_tracker
#define PF_RULES_RLOCK() rm_rlock(&pf_rules_lock, &_pf_rules_tracker)
#define PF_RULES_RUNLOCK() rm_runlock(&pf_rules_lock, &_pf_rules_tracker)
#define PF_RULES_WLOCK() rm_wlock(&pf_rules_lock)
#define PF_RULES_WUNLOCK() rm_wunlock(&pf_rules_lock)
#define PF_RULES_WOWNED() rm_wowned(&pf_rules_lock)
#define PF_RULES_ASSERT() rm_assert(&pf_rules_lock, RA_LOCKED)
#define PF_RULES_RASSERT() rm_assert(&pf_rules_lock, RA_RLOCKED)
#define PF_RULES_WASSERT() rm_assert(&pf_rules_lock, RA_WLOCKED)
extern struct mtx_padalign pf_table_stats_lock;
#define PF_TABLE_STATS_LOCK() mtx_lock(&pf_table_stats_lock)
#define PF_TABLE_STATS_UNLOCK() mtx_unlock(&pf_table_stats_lock)
#define PF_TABLE_STATS_OWNED() mtx_owned(&pf_table_stats_lock)
#define PF_TABLE_STATS_ASSERT() mtx_assert(&pf_rules_lock, MA_OWNED)
extern struct sx pf_end_lock;
#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[0] != (b)->addr32[0] || \
(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) \
)
#define PF_ALGNMNT(off) (((off) % 2) == 0)
#ifdef _KERNEL
struct pf_kpooladdr {
struct pf_addr_wrap addr;
TAILQ_ENTRY(pf_kpooladdr) entries;
char ifname[IFNAMSIZ];
struct pfi_kkif *kif;
};
TAILQ_HEAD(pf_kpalist, pf_kpooladdr);
struct pf_kpool {
struct pf_kpalist list;
struct pf_kpooladdr *cur;
struct pf_poolhashkey key;
struct pf_addr counter;
struct pf_mape_portset mape;
int tblidx;
u_int16_t proxy_port[2];
u_int8_t opts;
};
struct pf_rule_actions {
uint16_t qid;
uint16_t pqid;
uint16_t dnpipe;
uint16_t dnrpipe; /* Reverse direction pipe */
uint32_t flags;
};
union pf_krule_ptr {
struct pf_krule *ptr;
u_int32_t nr;
};
struct pf_krule {
struct pf_rule_addr src;
struct pf_rule_addr dst;
union pf_krule_ptr skip[PF_SKIP_COUNT];
char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE];
uint32_t ridentifier;
char ifname[IFNAMSIZ];
char qname[PF_QNAME_SIZE];
char pqname[PF_QNAME_SIZE];
char tagname[PF_TAG_NAME_SIZE];
char match_tagname[PF_TAG_NAME_SIZE];
char overload_tblname[PF_TABLE_NAME_SIZE];
TAILQ_ENTRY(pf_krule) entries;
struct pf_kpool rpool;
struct pf_counter_u64 evaluations;
struct pf_counter_u64 packets[2];
struct pf_counter_u64 bytes[2];
struct pfi_kkif *kif;
struct pf_kanchor *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_int16_t qid;
u_int16_t pqid;
u_int16_t dnpipe;
u_int16_t dnrpipe;
u_int32_t free_flags;
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 scrub_flags;
struct pf_rule_uid uid;
struct pf_rule_gid gid;
u_int32_t rule_flag;
uint32_t rule_ref;
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;
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;
u_int8_t flush;
u_int8_t prio;
u_int8_t set_prio[2];
struct {
struct pf_addr addr;
u_int16_t port;
} divert;
#ifdef PF_WANT_32_TO_64_COUNTER
LIST_ENTRY(pf_krule) allrulelist;
bool allrulelinked;
#endif
};
struct pf_ksrc_node {
LIST_ENTRY(pf_ksrc_node) entry;
struct pf_addr addr;
struct pf_addr raddr;
union pf_krule_ptr rule;
struct pfi_kkif *kif;
counter_u64_t bytes[2];
counter_u64_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;
};
#endif
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_kstate) states[2];
};
/* Keep synced with struct pf_kstate. */
struct pf_state_cmp {
u_int64_t id;
u_int32_t creatorid;
u_int8_t direction;
u_int8_t pad[3];
};
#define PFSTATE_ALLOWOPTS 0x01
#define PFSTATE_SLOPPY 0x02
/* was PFSTATE_PFLOW 0x04 */
#define PFSTATE_NOSYNC 0x08
#define PFSTATE_ACK 0x10
#define PFRULE_DN_IS_PIPE 0x40
#define PFRULE_DN_IS_QUEUE 0x80
#define PFSTATE_SETPRIO 0x0200
#define PFSTATE_SETMASK (PFSTATE_SETPRIO)
struct pf_state_scrub_export {
uint16_t pfss_flags;
uint8_t pfss_ttl; /* stashed TTL */
#define PF_SCRUB_FLAG_VALID 0x01
uint8_t scrub_flag;
uint32_t pfss_ts_mod; /* timestamp modulation */
};
struct pf_state_key_export {
struct pf_addr addr[2];
uint16_t port[2];
};
struct pf_state_peer_export {
struct pf_state_scrub_export scrub; /* state is scrubbed */
uint32_t seqlo; /* Max sequence number sent */
uint32_t seqhi; /* Max the other end ACKd + win */
uint32_t seqdiff; /* Sequence number modulator */
uint16_t max_win; /* largest window (pre scaling) */
uint16_t mss; /* Maximum segment size option */
uint8_t state; /* active state level */
uint8_t wscale; /* window scaling factor */
uint8_t dummy[6];
};
_Static_assert(sizeof(struct pf_state_peer_export) == 32, "size incorrect");
struct pf_state_export {
uint64_t version;
#define PF_STATE_VERSION 20210706
uint64_t id;
char ifname[IFNAMSIZ];
char orig_ifname[IFNAMSIZ];
struct pf_state_key_export key[2];
struct pf_state_peer_export src;
struct pf_state_peer_export dst;
struct pf_addr rt_addr;
uint32_t rule;
uint32_t anchor;
uint32_t nat_rule;
uint32_t creation;
uint32_t expire;
uint32_t spare0;
uint64_t packets[2];
uint64_t bytes[2];
uint32_t creatorid;
uint32_t spare1;
sa_family_t af;
uint8_t proto;
uint8_t direction;
uint8_t log;
uint8_t state_flags;
uint8_t timeout;
uint8_t sync_flags;
uint8_t updates;
uint8_t spare[112];
};
_Static_assert(sizeof(struct pf_state_export) == 384, "size incorrect");
#ifdef _KERNEL
struct pf_kstate {
/*
* Area shared with pf_state_cmp
*/
u_int64_t id;
u_int32_t creatorid;
u_int8_t direction;
u_int8_t pad[3];
/*
* end of the area
*/
u_int8_t state_flags;
u_int8_t timeout;
u_int8_t sync_state; /* PFSYNC_S_x */
u_int8_t sync_updates; /* XXX */
u_int refs;
struct mtx *lock;
TAILQ_ENTRY(pf_kstate) sync_list;
TAILQ_ENTRY(pf_kstate) key_list[2];
LIST_ENTRY(pf_kstate) entry;
struct pf_state_peer src;
struct pf_state_peer dst;
union pf_krule_ptr rule;
union pf_krule_ptr anchor;
union pf_krule_ptr nat_rule;
struct pf_addr rt_addr;
struct pf_state_key *key[2]; /* addresses stack and wire */
struct pfi_kkif *kif;
struct pfi_kkif *orig_kif; /* The real kif, even if we're a floating state (i.e. if == V_pfi_all). */
struct pfi_kkif *rt_kif;
struct pf_ksrc_node *src_node;
struct pf_ksrc_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 qid;
u_int16_t pqid;
u_int16_t dnpipe;
u_int16_t dnrpipe;
u_int16_t tag;
u_int8_t log;
};
/*
* Size <= fits 13 objects per page on LP64. Try to not grow the struct beyond that.
*/
_Static_assert(sizeof(struct pf_kstate) <= 312, "pf_kstate size crosses 312 bytes");
#endif
/*
* 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_kstate *);
typedef void pfsync_update_state_t(struct pf_kstate *);
typedef void pfsync_delete_state_t(struct pf_kstate *);
typedef void pfsync_clear_states_t(u_int32_t, const char *);
typedef int pfsync_defer_t(struct pf_kstate *, struct mbuf *);
typedef void pfsync_detach_ifnet_t(struct ifnet *);
VNET_DECLARE(pfsync_state_import_t *, pfsync_state_import_ptr);
#define V_pfsync_state_import_ptr VNET(pfsync_state_import_ptr)
VNET_DECLARE(pfsync_insert_state_t *, pfsync_insert_state_ptr);
#define V_pfsync_insert_state_ptr VNET(pfsync_insert_state_ptr)
VNET_DECLARE(pfsync_update_state_t *, pfsync_update_state_ptr);
#define V_pfsync_update_state_ptr VNET(pfsync_update_state_ptr)
VNET_DECLARE(pfsync_delete_state_t *, pfsync_delete_state_ptr);
#define V_pfsync_delete_state_ptr VNET(pfsync_delete_state_ptr)
VNET_DECLARE(pfsync_clear_states_t *, pfsync_clear_states_ptr);
#define V_pfsync_clear_states_ptr VNET(pfsync_clear_states_ptr)
VNET_DECLARE(pfsync_defer_t *, pfsync_defer_ptr);
#define V_pfsync_defer_ptr VNET(pfsync_defer_ptr)
extern pfsync_detach_ifnet_t *pfsync_detach_ifnet_ptr;
void pfsync_state_export(struct pfsync_state *,
struct pf_kstate *);
void pf_state_export(struct pf_state_export *,
struct pf_kstate *);
/* pflog */
struct pf_kruleset;
struct pf_pdesc;
typedef int pflog_packet_t(struct pfi_kkif *, struct mbuf *, sa_family_t,
u_int8_t, u_int8_t, struct pf_krule *, struct pf_krule *,
struct pf_kruleset *, struct pf_pdesc *, int);
extern pflog_packet_t *pflog_packet_ptr;
#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_krulequeue, pf_krule);
struct pf_kanchor;
struct pf_kruleset {
struct {
struct pf_krulequeue queues[2];
struct {
struct pf_krulequeue *ptr;
struct pf_krule **ptr_array;
u_int32_t rcount;
u_int32_t ticket;
int open;
} active, inactive;
} rules[PF_RULESET_MAX];
struct pf_kanchor *anchor;
u_int32_t tticket;
int tables;
int topen;
};
RB_HEAD(pf_kanchor_global, pf_kanchor);
RB_HEAD(pf_kanchor_node, pf_kanchor);
struct pf_kanchor {
RB_ENTRY(pf_kanchor) entry_global;
RB_ENTRY(pf_kanchor) entry_node;
struct pf_kanchor *parent;
struct pf_kanchor_node children;
char name[PF_ANCHOR_NAME_SIZE];
char path[MAXPATHLEN];
struct pf_kruleset ruleset;
int refcnt; /* anchor rules */
};
RB_PROTOTYPE(pf_kanchor_global, pf_kanchor, entry_global, pf_anchor_compare);
RB_PROTOTYPE(pf_kanchor_node, pf_kanchor, entry_node, pf_kanchor_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_kanchor_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 };
enum { PFR_TYPE_PACKETS, PFR_TYPE_BYTES, PFR_TYPE_MAX };
#define PFR_NUM_COUNTERS (PFR_DIR_MAX * PFR_OP_ADDR_MAX * PFR_TYPE_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];
};
#ifdef _KERNEL
struct pfr_kstate_counter {
counter_u64_t pkc_pcpu;
u_int64_t pkc_zero;
};
static inline int
pfr_kstate_counter_init(struct pfr_kstate_counter *pfrc, int flags)
{
pfrc->pkc_zero = 0;
pfrc->pkc_pcpu = counter_u64_alloc(flags);
if (pfrc->pkc_pcpu == NULL)
return (ENOMEM);
return (0);
}
static inline void
pfr_kstate_counter_deinit(struct pfr_kstate_counter *pfrc)
{
counter_u64_free(pfrc->pkc_pcpu);
}
static inline u_int64_t
pfr_kstate_counter_fetch(struct pfr_kstate_counter *pfrc)
{
u_int64_t c;
c = counter_u64_fetch(pfrc->pkc_pcpu);
c -= pfrc->pkc_zero;
return (c);
}
static inline void
pfr_kstate_counter_zero(struct pfr_kstate_counter *pfrc)
{
u_int64_t c;
c = counter_u64_fetch(pfrc->pkc_pcpu);
pfrc->pkc_zero = c;
}
static inline void
pfr_kstate_counter_add(struct pfr_kstate_counter *pfrc, int64_t n)
{
counter_u64_add(pfrc->pkc_pcpu, n);
}
struct pfr_ktstats {
struct pfr_table pfrts_t;
struct pfr_kstate_counter pfrkts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
struct pfr_kstate_counter pfrkts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
struct pfr_kstate_counter pfrkts_match;
struct pfr_kstate_counter pfrkts_nomatch;
long pfrkts_tzero;
int pfrkts_cnt;
int pfrkts_refcnt[PFR_REFCNT_MAX];
};
#endif /* _KERNEL */
#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 {
counter_u64_t pfrkc_counters;
long pfrkc_tzero;
};
#define pfr_kentry_counter(kc, dir, op, t) \
((kc)->pfrkc_counters + \
(dir) * PFR_OP_ADDR_MAX * PFR_TYPE_MAX + (op) * PFR_TYPE_MAX + (t))
#ifdef _KERNEL
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;
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_ktstats pfrkt_kts;
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_kruleset *pfrkt_rs;
long pfrkt_larg;
int pfrkt_nflags;
};
#define pfrkt_t pfrkt_kts.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_kts.pfrkts_cnt
#define pfrkt_refcnt pfrkt_kts.pfrkts_refcnt
#define pfrkt_packets pfrkt_kts.pfrkts_packets
#define pfrkt_bytes pfrkt_kts.pfrkts_bytes
#define pfrkt_match pfrkt_kts.pfrkts_match
#define pfrkt_nomatch pfrkt_kts.pfrkts_nomatch
#define pfrkt_tzero pfrkt_kts.pfrkts_tzero
#endif
#ifdef _KERNEL
struct pfi_kkif {
char pfik_name[IFNAMSIZ];
union {
RB_ENTRY(pfi_kkif) _pfik_tree;
LIST_ENTRY(pfi_kkif) _pfik_list;
} _pfik_glue;
#define pfik_tree _pfik_glue._pfik_tree
#define pfik_list _pfik_glue._pfik_list
struct pf_counter_u64 pfik_packets[2][2][2];
struct pf_counter_u64 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;
#ifdef PF_WANT_32_TO_64_COUNTER
LIST_ENTRY(pfi_kkif) pfik_allkiflist;
#endif
};
#endif
#define PFI_IFLAG_REFS 0x0001 /* has state references */
#define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */
#ifdef _KERNEL
struct pf_pdesc {
struct {
int done;
uid_t uid;
gid_t gid;
} lookup;
u_int64_t tot_len; /* Make Mickey money */
union pf_headers {
struct tcphdr tcp;
struct udphdr udp;
struct icmp icmp;
#ifdef INET6
struct icmp6_hdr icmp6;
#endif /* INET6 */
char any[0];
} hdr;
struct pf_krule *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;
struct pf_rule_actions act;
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 */
};
#endif
/* 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)
enum pf_syncookies_mode {
PF_SYNCOOKIES_NEVER = 0,
PF_SYNCOOKIES_ALWAYS = 1,
PF_SYNCOOKIES_ADAPTIVE = 2,
PF_SYNCOOKIES_MODE_MAX = PF_SYNCOOKIES_ADAPTIVE
};
#define PF_SYNCOOKIES_HIWATPCT 25
#define PF_SYNCOOKIES_LOWATPCT (PF_SYNCOOKIES_HIWATPCT / 2)
#ifdef _KERNEL
struct pf_kstatus {
counter_u64_t counters[PFRES_MAX]; /* reason for passing/dropping */
counter_u64_t lcounters[KLCNT_MAX]; /* limit counters */
struct pf_counter_u64 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];
bool keep_counters;
enum pf_syncookies_mode syncookies_mode;
bool syncookies_active;
uint64_t syncookies_inflight[2];
uint32_t states_halfopen;
};
#endif
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 */
/*
* Limit the length of the fragment queue traversal. Remember
* search entry points based on the fragment offset.
*/
#define PF_FRAG_ENTRY_POINTS 16
/*
* The number of entries in the fragment queue must be limited
* to avoid DoS by linear seaching. Instead of a global limit,
* use a limit per entry point. For large packets these sum up.
*/
#define PF_FRAG_ENTRY_LIMIT 64
/*
* 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;
};
#ifdef _KERNEL
struct pf_kstate_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;
struct pf_rule_addr psk_rt_addr;
char psk_ifname[IFNAMSIZ];
char psk_label[PF_RULE_LABEL_SIZE];
u_int psk_killed;
bool psk_kill_match;
};
#endif
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_states_v2 {
int ps_len;
uint64_t ps_req_version;
union {
caddr_t psu_buf;
struct pf_state_export *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_v0 {
u_int32_t action;
u_int32_t ticket;
u_int32_t nr;
struct pf_altq_v0 altq;
};
struct pfioc_altq_v1 {
u_int32_t action;
u_int32_t ticket;
u_int32_t nr;
/*
* Placed here so code that only uses the above parameters can be
* written entirely in terms of the v0 or v1 type.
*/
u_int32_t version;
struct pf_altq_v1 altq;
};
/*
* Latest version of struct pfioc_altq_vX. This must move in lock-step with
* the latest version of struct pf_altq_vX as it has that struct as a
* member.
*/
#define PFIOC_ALTQ_VERSION PF_ALTQ_VERSION
struct pfioc_qstats_v0 {
u_int32_t ticket;
u_int32_t nr;
void *buf;
int nbytes;
u_int8_t scheduler;
};
struct pfioc_qstats_v1 {
u_int32_t ticket;
u_int32_t nr;
void *buf;
int nbytes;
u_int8_t scheduler;
/*
* Placed here so code that only uses the above parameters can be
* written entirely in terms of the v0 or v1 type.
*/
u_int32_t version; /* Requested version of stats struct */
};
/* Latest version of struct pfioc_qstats_vX */
#define PFIOC_QSTATS_VERSION 1
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 DIOCADDRULENV _IOWR('D', 4, struct pfioc_nv)
#define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule)
#define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule)
#define DIOCGETRULENV _IOWR('D', 7, struct pfioc_nv)
/* XXX cut 8 - 17 */
#define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill)
#define DIOCCLRSTATESNV _IOWR('D', 18, struct pfioc_nv)
#define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state)
#define DIOCGETSTATENV _IOWR('D', 19, struct pfioc_nv)
#define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if)
#define DIOCGETSTATUS _IOWR('D', 21, struct pf_status)
#define DIOCGETSTATUSNV _IOWR('D', 21, struct pfioc_nv)
#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 DIOCKILLSTATESNV _IOWR('D', 41, struct pfioc_nv)
#define DIOCSTARTALTQ _IO ('D', 42)
#define DIOCSTOPALTQ _IO ('D', 43)
#define DIOCADDALTQV0 _IOWR('D', 45, struct pfioc_altq_v0)
#define DIOCADDALTQV1 _IOWR('D', 45, struct pfioc_altq_v1)
#define DIOCGETALTQSV0 _IOWR('D', 47, struct pfioc_altq_v0)
#define DIOCGETALTQSV1 _IOWR('D', 47, struct pfioc_altq_v1)
#define DIOCGETALTQV0 _IOWR('D', 48, struct pfioc_altq_v0)
#define DIOCGETALTQV1 _IOWR('D', 48, struct pfioc_altq_v1)
#define DIOCCHANGEALTQV0 _IOWR('D', 49, struct pfioc_altq_v0)
#define DIOCCHANGEALTQV1 _IOWR('D', 49, struct pfioc_altq_v1)
#define DIOCGETQSTATSV0 _IOWR('D', 50, struct pfioc_qstats_v0)
#define DIOCGETQSTATSV1 _IOWR('D', 50, struct pfioc_qstats_v1)
#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)
#define DIOCGIFSPEEDV0 _IOWR('D', 92, struct pf_ifspeed_v0)
#define DIOCGIFSPEEDV1 _IOWR('D', 92, struct pf_ifspeed_v1)
#define DIOCGETSTATESV2 _IOWR('D', 93, struct pfioc_states_v2)
#define DIOCGETSYNCOOKIES _IOWR('D', 94, struct pfioc_nv)
#define DIOCSETSYNCOOKIES _IOWR('D', 95, struct pfioc_nv)
#define DIOCKEEPCOUNTERS _IOWR('D', 96, struct pfioc_nv)
#define DIOCKEEPCOUNTERS_FREEBSD13 _IOWR('D', 92, struct pfioc_nv)
struct pf_ifspeed_v0 {
char ifname[IFNAMSIZ];
u_int32_t baudrate;
};
struct pf_ifspeed_v1 {
char ifname[IFNAMSIZ];
u_int32_t baudrate32;
/* layout identical to struct pf_ifspeed_v0 up to this point */
u_int64_t baudrate;
};
/* Latest version of struct pf_ifspeed_vX */
#define PF_IFSPEED_VERSION 1
/*
* Compatibility and convenience macros
*/
#ifndef _KERNEL
#ifdef PFIOC_USE_LATEST
/*
* Maintaining in-tree consumers of the ioctl interface is easier when that
* code can be written in terms old names that refer to the latest interface
* version as that reduces the required changes in the consumers to those
* that are functionally necessary to accommodate a new interface version.
*/
#define pfioc_altq __CONCAT(pfioc_altq_v, PFIOC_ALTQ_VERSION)
#define pfioc_qstats __CONCAT(pfioc_qstats_v, PFIOC_QSTATS_VERSION)
#define pf_ifspeed __CONCAT(pf_ifspeed_v, PF_IFSPEED_VERSION)
#define DIOCADDALTQ __CONCAT(DIOCADDALTQV, PFIOC_ALTQ_VERSION)
#define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, PFIOC_ALTQ_VERSION)
#define DIOCGETALTQ __CONCAT(DIOCGETALTQV, PFIOC_ALTQ_VERSION)
#define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, PFIOC_ALTQ_VERSION)
#define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, PFIOC_QSTATS_VERSION)
#define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, PF_IFSPEED_VERSION)
#else
/*
* When building out-of-tree code that is written for the old interface,
* such as may exist in ports for example, resolve the old struct tags and
* ioctl command names to the v0 versions.
*/
#define pfioc_altq __CONCAT(pfioc_altq_v, 0)
#define pfioc_qstats __CONCAT(pfioc_qstats_v, 0)
#define pf_ifspeed __CONCAT(pf_ifspeed_v, 0)
#define DIOCADDALTQ __CONCAT(DIOCADDALTQV, 0)
#define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, 0)
#define DIOCGETALTQ __CONCAT(DIOCGETALTQV, 0)
#define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, 0)
#define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, 0)
#define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, 0)
#endif /* PFIOC_USE_LATEST */
#endif /* _KERNEL */
#ifdef _KERNEL
LIST_HEAD(pf_ksrc_node_list, pf_ksrc_node);
struct pf_srchash {
struct pf_ksrc_node_list nodes;
struct mtx lock;
};
struct pf_keyhash {
LIST_HEAD(, pf_state_key) keys;
struct mtx lock;
};
struct pf_idhash {
LIST_HEAD(, pf_kstate) states;
struct mtx lock;
};
extern u_long pf_ioctl_maxcount;
extern u_long pf_hashmask;
extern u_long pf_srchashmask;
#define PF_HASHSIZ (131072)
#define PF_SRCHASHSIZ (PF_HASHSIZ/4)
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(struct intr_event *, pf_swi_ie);
#define V_pf_swi_ie VNET(pf_swi_ie)
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[4]);
#define V_pf_altqs VNET(pf_altqs)
VNET_DECLARE(struct pf_kpalist, 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_altq_ifs_active);
#define V_pf_altq_ifs_active VNET(pf_altq_ifs_active)
VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive);
#define V_pf_altqs_inactive VNET(pf_altqs_inactive)
VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_inactive);
#define V_pf_altq_ifs_inactive VNET(pf_altq_ifs_inactive)
VNET_DECLARE(struct pf_krulequeue, pf_unlinked_rules);
#define V_pf_unlinked_rules VNET(pf_unlinked_rules)
#ifdef PF_WANT_32_TO_64_COUNTER
LIST_HEAD(allkiflist_head, pfi_kkif);
VNET_DECLARE(struct allkiflist_head, pf_allkiflist);
#define V_pf_allkiflist VNET(pf_allkiflist)
VNET_DECLARE(size_t, pf_allkifcount);
#define V_pf_allkifcount VNET(pf_allkifcount)
VNET_DECLARE(struct pfi_kkif *, pf_kifmarker);
#define V_pf_kifmarker VNET(pf_kifmarker)
LIST_HEAD(allrulelist_head, pf_krule);
VNET_DECLARE(struct allrulelist_head, pf_allrulelist);
#define V_pf_allrulelist VNET(pf_allrulelist)
VNET_DECLARE(size_t, pf_allrulecount);
#define V_pf_allrulecount VNET(pf_allrulecount)
VNET_DECLARE(struct pf_krule *, pf_rulemarker);
#define V_pf_rulemarker VNET(pf_rulemarker)
#endif
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_krulequeue *);
#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_unload_vnet_purge(void);
extern void pf_intr(void *);
extern void pf_purge_expired_src_nodes(void);
extern int pf_unlink_state(struct pf_kstate *);
extern int pf_state_insert(struct pfi_kkif *,
struct pfi_kkif *,
struct pf_state_key *,
struct pf_state_key *,
struct pf_kstate *);
extern struct pf_kstate *pf_alloc_state(int);
extern void pf_free_state(struct pf_kstate *);
static __inline void
pf_ref_state(struct pf_kstate *s)
{
refcount_acquire(&s->refs);
}
static __inline int
pf_release_state(struct pf_kstate *s)
{
if (refcount_release(&s->refs)) {
pf_free_state(s);
return (1);
} else
return (0);
}
static __inline int
pf_release_staten(struct pf_kstate *s, u_int n)
{
if (refcount_releasen(&s->refs, n)) {
pf_free_state(s);
return (1);
} else
return (0);
}
extern struct pf_kstate *pf_find_state_byid(uint64_t, uint32_t);
extern struct pf_kstate *pf_find_state_all(struct pf_state_key_cmp *,
u_int, int *);
extern bool pf_find_state_all_exists(struct pf_state_key_cmp *,
u_int);
extern struct pf_ksrc_node *pf_find_src_node(struct pf_addr *,
struct pf_krule *, sa_family_t, int);
extern void pf_unlink_src_node(struct pf_ksrc_node *);
extern u_int pf_free_src_nodes(struct pf_ksrc_node_list *);
extern void pf_print_state(struct pf_kstate *);
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_krule, 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_krule *);
#ifdef INET
int pf_test(int, int, struct ifnet *, struct mbuf **, struct inpcb *);
int pf_normalize_ip(struct mbuf **, int, struct pfi_kkif *, u_short *,
struct pf_pdesc *);
#endif /* INET */
#ifdef INET6
int pf_test6(int, int, struct ifnet *, struct mbuf **, struct inpcb *);
int pf_normalize_ip6(struct mbuf **, int, struct pfi_kkif *, 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_kstate *);
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_patch_16_unaligned(struct mbuf *, u_int16_t *, void *, u_int16_t,
bool, u_int8_t);
void pf_patch_32_unaligned(struct mbuf *, u_int16_t *, void *, u_int32_t,
bool, u_int8_t);
void pf_send_deferred_syn(struct pf_kstate *);
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_kkif *, struct mbuf *, int, int, void *,
struct pf_pdesc *);
void pf_normalize_tcp_cleanup(struct pf_kstate *);
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_kstate *,
struct pf_state_peer *, struct pf_state_peer *, int *);
u_int32_t
pf_state_expires(const struct pf_kstate *);
void pf_purge_expired_fragments(void);
void pf_purge_fragments(uint32_t);
int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kkif *,
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_kruleset *, 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_table_count(struct pfr_table *, 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_kkif *, pfi_all);
#define V_pfi_all VNET(pfi_all)
void pfi_initialize(void);
void pfi_initialize_vnet(void);
void pfi_cleanup(void);
void pfi_cleanup_vnet(void);
void pfi_kkif_ref(struct pfi_kkif *);
void pfi_kkif_unref(struct pfi_kkif *);
struct pfi_kkif *pfi_kkif_find(const char *);
struct pfi_kkif *pfi_kkif_attach(struct pfi_kkif *, const char *);
int pfi_kkif_match(struct pfi_kkif *, struct pfi_kkif *);
void pfi_kkif_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_krule *, 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);
u_int16_t pf_get_mss(struct mbuf *, int, u_int16_t, sa_family_t);
u_int8_t pf_get_wscale(struct mbuf *, int, u_int16_t, sa_family_t);
struct mbuf *pf_build_tcp(const struct pf_krule *, sa_family_t,
const struct pf_addr *, const struct pf_addr *,
u_int16_t, u_int16_t, u_int32_t, u_int32_t,
u_int8_t, u_int16_t, u_int16_t, u_int8_t, int,
u_int16_t);
void pf_send_tcp(const struct pf_krule *, sa_family_t,
const struct pf_addr *, const struct pf_addr *,
u_int16_t, u_int16_t, u_int32_t, u_int32_t,
u_int8_t, u_int16_t, u_int16_t, u_int8_t, int,
u_int16_t);
void pf_syncookies_init(void);
void pf_syncookies_cleanup(void);
int pf_get_syncookies(struct pfioc_nv *);
int pf_set_syncookies(struct pfioc_nv *);
int pf_synflood_check(struct pf_pdesc *);
void pf_syncookie_send(struct mbuf *m, int off,
struct pf_pdesc *);
u_int8_t pf_syncookie_validate(struct pf_pdesc *);
struct mbuf * pf_syncookie_recreate_syn(uint8_t, int,
struct pf_pdesc *);
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_kanchor_global, pf_anchors);
#define V_pf_anchors VNET(pf_anchors)
VNET_DECLARE(struct pf_kanchor, pf_main_anchor);
#define V_pf_main_anchor VNET(pf_main_anchor)
#define pf_main_ruleset V_pf_main_anchor.ruleset
void pf_init_kruleset(struct pf_kruleset *);
int pf_kanchor_setup(struct pf_krule *,
const struct pf_kruleset *, const char *);
int pf_kanchor_nvcopyout(const struct pf_kruleset *,
const struct pf_krule *, nvlist_t *);
int pf_kanchor_copyout(const struct pf_kruleset *,
const struct pf_krule *, struct pfioc_rule *);
void pf_kanchor_remove(struct pf_krule *);
void pf_remove_if_empty_kruleset(struct pf_kruleset *);
struct pf_kruleset *pf_find_kruleset(const char *);
struct pf_kruleset *pf_find_or_create_kruleset(const char *);
void pf_rs_initialize(void);
void pf_krule_free(struct pf_krule *);
#endif
/* 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_kanchor_stackframe *, int *,
struct pf_kruleset **, int, struct pf_krule **,
struct pf_krule **, int *);
int pf_step_out_of_anchor(struct pf_kanchor_stackframe *, int *,
struct pf_kruleset **, int, struct pf_krule **,
struct pf_krule **, int *);
int pf_map_addr(u_int8_t, struct pf_krule *,
struct pf_addr *, struct pf_addr *,
struct pf_addr *, struct pf_ksrc_node **);
struct pf_krule *pf_get_translation(struct pf_pdesc *, struct mbuf *,
int, int, struct pfi_kkif *, struct pf_ksrc_node **,
struct pf_state_key **, struct pf_state_key **,
struct pf_addr *, struct pf_addr *,
uint16_t, uint16_t, struct pf_kanchor_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 *);
struct pfi_kkif *pf_kkif_create(int);
void pf_kkif_free(struct pfi_kkif *);
void pf_kkif_zero(struct pfi_kkif *);
#endif /* _KERNEL */
#endif /* _NET_PFVAR_H_ */
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