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Diffstat (limited to 'sys/contrib/pf/net/pfvar.h')
| -rw-r--r-- | sys/contrib/pf/net/pfvar.h | 2232 |
1 files changed, 2232 insertions, 0 deletions
diff --git a/sys/contrib/pf/net/pfvar.h b/sys/contrib/pf/net/pfvar.h new file mode 100644 index 0000000..85fef1d --- /dev/null +++ b/sys/contrib/pf/net/pfvar.h @@ -0,0 +1,2232 @@ +/* $OpenBSD: pfvar.h,v 1.282 2009/01/29 15:12:28 pyr Exp $ */ + +/* + * 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. + * + */ + +#ifndef _NET_PFVAR_H_ +#define _NET_PFVAR_H_ + +#include <sys/param.h> +#include <sys/types.h> +#include <sys/queue.h> +#include <sys/tree.h> +#ifdef __FreeBSD__ +#include <sys/lock.h> +#include <sys/sx.h> +#else +#include <sys/rwlock.h> +#endif + +#include <net/radix.h> +#include <net/route.h> +#ifdef __FreeBSD__ +#include <net/if_clone.h> +#include <net/pf_mtag.h> +#include <vm/uma.h> +#else +#include <netinet/ip_ipsp.h> +#endif + +#ifdef __FreeBSD__ +#include <netinet/in.h> +#endif + +#include <netinet/tcp_fsm.h> + +struct ip; +struct ip6_hdr; +#ifdef __FreeBSD__ +struct inpcb; +#endif + +#define PF_TCPS_PROXY_SRC ((TCP_NSTATES)+0) +#define PF_TCPS_PROXY_DST ((TCP_NSTATES)+1) + +#define PF_MD5_DIGEST_LENGTH 16 +#ifdef MD5_DIGEST_LENGTH +#if PF_MD5_DIGEST_LENGTH != MD5_DIGEST_LENGTH +#error +#endif +#endif + +enum { PF_INOUT, PF_IN, PF_OUT }; +enum { PF_PASS, PF_DROP, PF_SCRUB, PF_NOSCRUB, PF_NAT, PF_NONAT, + PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP, PF_DEFER }; +enum { PF_RULESET_SCRUB, PF_RULESET_FILTER, PF_RULESET_NAT, + PF_RULESET_BINAT, PF_RULESET_RDR, PF_RULESET_MAX }; +enum { PF_OP_NONE, PF_OP_IRG, PF_OP_EQ, PF_OP_NE, PF_OP_LT, + PF_OP_LE, PF_OP_GT, PF_OP_GE, PF_OP_XRG, PF_OP_RRG }; +enum { PF_DEBUG_NONE, PF_DEBUG_URGENT, PF_DEBUG_MISC, PF_DEBUG_NOISY }; +enum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL, + PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER, + PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET }; +enum { PF_GET_NONE, PF_GET_CLR_CNTR }; +enum { PF_SK_WIRE, PF_SK_STACK, PF_SK_BOTH }; + +/* + * Note about PFTM_*: real indices into pf_rule.timeout[] come before + * PFTM_MAX, special cases afterwards. See pf_state_expires(). + */ +enum { PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED, + PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED, + PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE, + PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY, + PFTM_OTHER_FIRST_PACKET, PFTM_OTHER_SINGLE, + PFTM_OTHER_MULTIPLE, PFTM_FRAG, PFTM_INTERVAL, + PFTM_ADAPTIVE_START, PFTM_ADAPTIVE_END, PFTM_SRC_NODE, + PFTM_TS_DIFF, PFTM_MAX, PFTM_PURGE, PFTM_UNLINKED, + PFTM_UNTIL_PACKET }; + +/* PFTM default values */ +#define PFTM_TCP_FIRST_PACKET_VAL 120 /* First TCP packet */ +#define PFTM_TCP_OPENING_VAL 30 /* No response yet */ +#define PFTM_TCP_ESTABLISHED_VAL 24*60*60/* Established */ +#define PFTM_TCP_CLOSING_VAL 15 * 60 /* Half closed */ +#define PFTM_TCP_FIN_WAIT_VAL 45 /* Got both FINs */ +#define PFTM_TCP_CLOSED_VAL 90 /* Got a RST */ +#define PFTM_UDP_FIRST_PACKET_VAL 60 /* First UDP packet */ +#define PFTM_UDP_SINGLE_VAL 30 /* Unidirectional */ +#define PFTM_UDP_MULTIPLE_VAL 60 /* Bidirectional */ +#define PFTM_ICMP_FIRST_PACKET_VAL 20 /* First ICMP packet */ +#define PFTM_ICMP_ERROR_REPLY_VAL 10 /* Got error response */ +#define PFTM_OTHER_FIRST_PACKET_VAL 60 /* First packet */ +#define PFTM_OTHER_SINGLE_VAL 30 /* Unidirectional */ +#define PFTM_OTHER_MULTIPLE_VAL 60 /* Bidirectional */ +#define PFTM_FRAG_VAL 30 /* Fragment expire */ +#define PFTM_INTERVAL_VAL 10 /* Expire interval */ +#define PFTM_SRC_NODE_VAL 0 /* Source tracking */ +#define PFTM_TS_DIFF_VAL 30 /* Allowed TS diff */ + +enum { PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO }; +enum { PF_LIMIT_STATES, PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS, + PF_LIMIT_TABLES, PF_LIMIT_TABLE_ENTRIES, PF_LIMIT_MAX }; +#define PF_POOL_IDMASK 0x0f +enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM, + PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN }; +enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL, + PF_ADDR_TABLE, PF_ADDR_RTLABEL, PF_ADDR_URPFFAILED, + PF_ADDR_RANGE }; +#define PF_POOL_TYPEMASK 0x0f +#define PF_POOL_STICKYADDR 0x20 +#define PF_WSCALE_FLAG 0x80 +#define PF_WSCALE_MASK 0x0f + +#define PF_LOG 0x01 +#define PF_LOG_ALL 0x02 +#define PF_LOG_SOCKET_LOOKUP 0x04 + +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 PF_TABLE_NAME_SIZE 32 + +#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]; +#ifdef __FreeBSD__ +#define RTLABEL_LEN 32 +#endif + char rtlabelname[RTLABEL_LEN]; + u_int32_t rtlabel; + } 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; + void *pfid_hook_cookie; + 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 + */ + +#ifdef __FreeBSD__ +#define splsoftnet() splnet() + +#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 PR_NOWAIT M_NOWAIT +#define PR_WAITOK M_WAITOK +#define PR_ZERO M_ZERO +#define pool_get(p, f) uma_zalloc(*(p), (f)) +#define pool_put(p, o) uma_zfree(*(p), (o)) + +#define UMA_CREATE(var, type, desc) \ + var = uma_zcreate(desc, sizeof(type), \ + NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 0); \ + if (var == NULL) \ + break +#define UMA_DESTROY(var) \ + if (var) \ + uma_zdestroy(var) + +#ifdef __FreeBSD__ +extern struct mtx pf_task_mtx; + +#define PF_LOCK_ASSERT() mtx_assert(&pf_task_mtx, MA_OWNED) +#define PF_UNLOCK_ASSERT() mtx_assert(&pf_task_mtx, MA_NOTOWNED) +#define PF_LOCK() mtx_lock(&pf_task_mtx) +#define PF_UNLOCK() mtx_unlock(&pf_task_mtx) +#else +#define PF_LOCK_ASSERT() +#define PF_UNLOCK_ASSERT() +#define PF_LOCK() +#define PF_UNLOCK() +#endif /* __FreeBSD__ */ + +#define PF_COPYIN(uaddr, kaddr, len, r) do { \ + PF_UNLOCK(); \ + r = copyin((uaddr), (kaddr), (len)); \ + PF_LOCK(); \ +} while(0) + +#define PF_COPYOUT(kaddr, uaddr, len, r) do { \ + PF_UNLOCK(); \ + r = copyout((kaddr), (uaddr), (len)); \ + PF_LOCK(); \ +} while(0) + +#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 +#endif /* __FreeBSD__ */ +#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]) || \ + ((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]) || \ + ((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) \ + ((c == AF_INET && !(a)->addr32[0]) || \ + (!(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_RTLABEL && \ + !pf_rtlabel_match((x), (af), (aw), (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 port_op; + 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]; +#define PF_QNAME_SIZE 64 + 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 states_cur; + u_int32_t states_tot; + u_int32_t max_states; + u_int32_t src_nodes; + u_int32_t max_src_nodes; + u_int32_t max_src_states; + u_int32_t spare1; /* netgraph */ + 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; + + 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; +}; + +/* 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 */ + +/* scrub flags */ +#define PFRULE_NODF 0x0100 +#define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */ +#define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */ +#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 PFRULE_PFLOW 0x00040000 + +#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 { + RB_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]; +}; + +TAILQ_HEAD(pf_state_queue, pf_state); + +/* keep synced with struct pf_state_key, used in RB_FIND */ +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_item { + TAILQ_ENTRY(pf_state_item) entry; + struct pf_state *s; +}; + +TAILQ_HEAD(pf_statelisthead, pf_state_item); + +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]; + + RB_ENTRY(pf_state_key) entry; + struct pf_statelisthead states; + struct pf_state_key *reverse; + struct inpcb *inp; +}; + +/* keep synced with struct pf_state, used in RB_FIND */ +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; +#ifdef __FreeBSD__ + u_int8_t pad[2]; + u_int8_t local_flags; +#define PFSTATE_EXPIRING 0x01 +#else + u_int8_t pad[3]; +#endif + + TAILQ_ENTRY(pf_state) sync_list; + TAILQ_ENTRY(pf_state) entry_list; + RB_ENTRY(pf_state) entry_id; + 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 +#define 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_int32_t id[2]; + 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; +#ifdef __FreeBSD__ + u_int8_t local_flags; +#define PFSTATE_EXPIRING 0x01 + u_int8_t pad; +#endif + u_int8_t log; + u_int8_t state_flags; + u_int8_t timeout; + u_int8_t sync_flags; + u_int8_t updates; +} __packed; + +#ifdef __FreeBSD__ +#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_state_in_use_t(struct pf_state *); +typedef int pfsync_defer_t(struct pf_state *, struct mbuf *); +typedef int pfsync_up_t(void); + +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_state_in_use_t *pfsync_state_in_use_ptr; +extern pfsync_defer_t *pfsync_defer_ptr; +extern pfsync_up_t *pfsync_up_ptr; + +void pfsync_state_export(struct pfsync_state *, + struct pf_state *); + +/* pflow */ +typedef int export_pflow_t(struct pf_state *); + +extern export_pflow_t *export_pflow_ptr; + +/* 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 *); + +extern pflog_packet_t *pflog_packet_ptr; + +/* pf uid hack */ +VNET_DECLARE(int, debug_pfugidhack); +#define V_debug_pfugidhack VNET(debug_pfugidhack) + +#define V_pf_end_threads VNET(pf_end_threads) +#endif + +/* Macros to set/clear/test flags. */ +#ifdef _KERNEL +#define SET(t, f) ((t) |= (f)) +#define CLR(t, f) ((t) &= ~(f)) +#define ISSET(t, f) ((t) & (f)) +#endif +#endif + +#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; +}; +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 0x00000043 +#define PFR_TFLAG_SETMASK 0x0000003C +#define PFR_TFLAG_ALLMASK 0x0000007F + +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; + union { + + struct pfr_kcounters *pfrke_counters; +#if 0 + struct pfr_kroute *pfrke_route; +#endif + } u; + long pfrke_tzero; + u_int8_t pfrke_af; + u_int8_t pfrke_net; + u_int8_t pfrke_not; + u_int8_t pfrke_mark; +}; +#define pfrke_counters u.pfrke_counters +#define pfrke_route u.pfrke_route + + +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 + +RB_HEAD(pf_state_tree, pf_state_key); +RB_PROTOTYPE(pf_state_tree, pf_state_key, entry, pf_state_compare_key); + +RB_HEAD(pf_state_tree_ext_gwy, pf_state_key); +RB_PROTOTYPE(pf_state_tree_ext_gwy, pf_state_key, + entry_ext_gwy, pf_state_compare_ext_gwy); + +RB_HEAD(pfi_ifhead, pfi_kif); + +/* state tables */ +#ifdef __FreeBSD__ +#ifdef _KERNEL +VNET_DECLARE(struct pf_state_tree, pf_statetbl); +#define V_pf_statetbl VNET(pf_statetbl) +#endif +#else +extern struct pf_state_tree pf_statetbl; +#endif + +/* keep synced with pfi_kif, used in RB_FIND */ +struct pfi_kif_cmp { + char pfik_name[IFNAMSIZ]; +}; + +struct pfi_kif { + char pfik_name[IFNAMSIZ]; + RB_ENTRY(pfi_kif) pfik_tree; + u_int64_t pfik_packets[2][2][2]; + u_int64_t pfik_bytes[2][2][2]; + u_int32_t pfik_tzero; + int pfik_flags; + void *pfik_ah_cookie; + struct ifnet *pfik_ifp; + struct ifg_group *pfik_group; + int pfik_states; + int pfik_rules; + TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; +}; + +enum pfi_kif_refs { + PFI_KIF_REF_NONE, + PFI_KIF_REF_STATE, + PFI_KIF_REF_RULE +}; + +#define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ + +struct pf_pdesc { + struct { + int done; + uid_t uid; + gid_t gid; + pid_t pid; + } 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 ether_header + *eh; + struct pf_addr *src; /* src address */ + struct pf_addr *dst; /* dst address */ + u_int16_t *sport; + u_int16_t *dport; +#ifdef __FreeBSD__ + struct pf_mtag *pf_mtag; +#endif + + 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 */ + +/* Reasons code for passing/dropping a packet */ +#define PFRES_MATCH 0 /* Explicit match of a rule */ +#define PFRES_BADOFF 1 /* Bad offset for pull_hdr */ +#define PFRES_FRAG 2 /* Dropping following fragment */ +#define PFRES_SHORT 3 /* Dropping short packet */ +#define PFRES_NORM 4 /* Dropping by normalizer */ +#define PFRES_MEMORY 5 /* Dropped due to lacking mem */ +#define PFRES_TS 6 /* Bad TCP Timestamp (RFC1323) */ +#define PFRES_CONGEST 7 /* Congestion (of ipintrq) */ +#define PFRES_IPOPTIONS 8 /* IP option */ +#define PFRES_PROTCKSUM 9 /* Protocol checksum invalid */ +#define PFRES_BADSTATE 10 /* State mismatch */ +#define PFRES_STATEINS 11 /* State insertion failure */ +#define PFRES_MAXSTATES 12 /* State limit */ +#define PFRES_SRCLIMIT 13 /* Source node/conn limit */ +#define PFRES_SYNPROXY 14 /* SYN proxy */ +#define PFRES_MAX 15 /* total+1 */ + +#define PFRES_NAMES { \ + "match", \ + "bad-offset", \ + "fragment", \ + "short", \ + "normalize", \ + "memory", \ + "bad-timestamp", \ + "congestion", \ + "ip-option", \ + "proto-cksum", \ + "state-mismatch", \ + "state-insert", \ + "state-limit", \ + "src-limit", \ + "synproxy", \ + NULL \ +} + +/* Counters for other things we want to keep track of */ +#define LCNT_STATES 0 /* states */ +#define LCNT_SRCSTATES 1 /* max-src-states */ +#define LCNT_SRCNODES 2 /* max-src-nodes */ +#define LCNT_SRCCONN 3 /* max-src-conn */ +#define LCNT_SRCCONNRATE 4 /* max-src-conn-rate */ +#define LCNT_OVERLOAD_TABLE 5 /* entry added to overload table */ +#define LCNT_OVERLOAD_FLUSH 6 /* state entries flushed */ +#define LCNT_MAX 7 /* total+1 */ + +#define LCNT_NAMES { \ + "max states per rule", \ + "max-src-states", \ + "max-src-nodes", \ + "max-src-conn", \ + "max-src-conn-rate", \ + "overload table insertion", \ + "overload flush states", \ + NULL \ +} + +/* 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 FCNT_STATE_SEARCH 0 +#define FCNT_STATE_INSERT 1 +#define FCNT_STATE_REMOVALS 2 +#define FCNT_MAX 3 + +#define SCNT_SRC_NODE_SEARCH 0 +#define SCNT_SRC_NODE_INSERT 1 +#define SCNT_SRC_NODE_REMOVALS 2 +#define SCNT_MAX 3 + +#define ACTION_SET(a, x) \ + do { \ + if ((a) != NULL) \ + *(a) = (x); \ + } while (0) + +#ifdef __FreeBSD__ +#define REASON_SET(a, x) \ + do { \ + if ((a) != NULL) \ + *(a) = (x); \ + if (x < PFRES_MAX) \ + V_pf_status.counters[x]++; \ + } while (0) +#else +#define REASON_SET(a, x) \ + do { \ + if ((a) != NULL) \ + *(a) = (x); \ + if (x < PFRES_MAX) \ + pf_status.counters[x]++; \ + } while (0) +#endif + +struct pf_status { + u_int64_t counters[PFRES_MAX]; + u_int64_t lcounters[LCNT_MAX]; /* limit counters */ + u_int64_t fcounters[FCNT_MAX]; + u_int64_t scounters[SCNT_MAX]; + u_int64_t pcounters[2][2][3]; + u_int64_t bcounters[2][2]; + u_int64_t stateid; + u_int32_t running; + u_int32_t states; + u_int32_t src_nodes; + u_int32_t since; + u_int32_t debug; + u_int32_t hostid; + char ifname[IFNAMSIZ]; + u_int8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; +}; + +struct cbq_opts { + u_int minburst; + u_int maxburst; + u_int pktsize; + u_int maxpktsize; + u_int ns_per_byte; + u_int maxidle; + int minidle; + u_int offtime; + int flags; +}; + +struct priq_opts { + int flags; +}; + +struct hfsc_opts { + /* real-time service curve */ + u_int rtsc_m1; /* slope of the 1st segment in bps */ + u_int rtsc_d; /* the x-projection of m1 in msec */ + u_int rtsc_m2; /* slope of the 2nd segment in bps */ + /* link-sharing service curve */ + u_int lssc_m1; + u_int lssc_d; + u_int lssc_m2; + /* upper-limit service curve */ + u_int ulsc_m1; + u_int ulsc_d; + u_int ulsc_m2; + int flags; +}; + +struct pf_altq { + char ifname[IFNAMSIZ]; + + void *altq_disc; /* discipline-specific state */ + TAILQ_ENTRY(pf_altq) entries; + + /* scheduler spec */ + u_int8_t scheduler; /* scheduler type */ + u_int16_t tbrsize; /* tokenbucket regulator size */ + u_int32_t ifbandwidth; /* interface bandwidth */ + + /* queue spec */ + char qname[PF_QNAME_SIZE]; /* queue name */ + char parent[PF_QNAME_SIZE]; /* parent name */ + u_int32_t parent_qid; /* parent queue id */ + u_int32_t bandwidth; /* queue bandwidth */ + u_int8_t priority; /* priority */ +#ifdef __FreeBSD__ + u_int8_t local_flags; /* dynamic interface */ +#define PFALTQ_FLAG_IF_REMOVED 0x01 +#endif + u_int16_t qlimit; /* queue size limit */ + u_int16_t flags; /* misc flags */ + union { + struct cbq_opts cbq_opts; + struct priq_opts priq_opts; + struct hfsc_opts hfsc_opts; + } pq_u; + + u_int32_t qid; /* return value */ +}; + +struct pf_tagname { + TAILQ_ENTRY(pf_tagname) entries; + char name[PF_TAG_NAME_SIZE]; + u_int16_t tag; + int ref; +}; + +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 PFFRAG_FRAG_HIWAT 1000 /* Number of fragmented packets */ +#define PFFRAG_FRCENT_HIWAT 50000 /* Number of fragment cache entries */ +#define PFFRAG_FRCACHE_HIWAT 10000 /* Number of fragment descriptors */ + +#define PFR_KTABLE_HIWAT 1000 /* Number of tables */ +#define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ +#define PFR_KENTRY_HIWAT_SMALL 100000 /* Number of table entries (tiny hosts) */ + +/* + * 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 +#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) +#ifdef __FreeBSD__ +struct pf_ifspeed { + char ifname[IFNAMSIZ]; + u_int32_t baudrate; +}; +#define DIOCGIFSPEED _IOWR('D', 92, struct pf_ifspeed) +#endif + +#ifdef _KERNEL +RB_HEAD(pf_src_tree, pf_src_node); +RB_PROTOTYPE(pf_src_tree, pf_src_node, entry, pf_src_compare); +#ifdef __FreeBSD__ +VNET_DECLARE(struct pf_src_tree, tree_src_tracking); +#define V_tree_src_tracking VNET(tree_src_tracking) +#else +extern struct pf_src_tree tree_src_tracking; +#endif + +RB_HEAD(pf_state_tree_id, pf_state); +RB_PROTOTYPE(pf_state_tree_id, pf_state, + entry_id, pf_state_compare_id); +#ifdef __FreeBSD__ +VNET_DECLARE(struct pf_state_tree_id, tree_id); +#define V_tree_id VNET(tree_id) +VNET_DECLARE(struct pf_state_queue, state_list); +#define V_state_list VNET(state_list) +#else +extern struct pf_state_tree_id tree_id; +extern struct pf_state_queue state_list; +#endif + +TAILQ_HEAD(pf_poolqueue, pf_pool); +#ifdef __FreeBSD__ +VNET_DECLARE(struct pf_poolqueue, pf_pools[2]); +#define V_pf_pools VNET(pf_pools) +#else +extern struct pf_poolqueue pf_pools[2]; +#endif +TAILQ_HEAD(pf_altqqueue, pf_altq); +#ifdef __FreeBSD__ +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) +#else +extern struct pf_altqqueue pf_altqs[2]; +extern struct pf_palist pf_pabuf; +#endif + +#ifdef __FreeBSD__ +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_poolqueue *, pf_pools_active); +#define V_pf_pools_active VNET(pf_pools_active) +VNET_DECLARE(struct pf_poolqueue *, pf_pools_inactive); +#define V_pf_pools_inactive VNET(pf_pools_inactive) +#else +extern u_int32_t ticket_altqs_active; +extern u_int32_t ticket_altqs_inactive; +extern int altqs_inactive_open; +extern u_int32_t ticket_pabuf; +extern struct pf_altqqueue *pf_altqs_active; +extern struct pf_altqqueue *pf_altqs_inactive; +extern struct pf_poolqueue *pf_pools_active; +extern struct pf_poolqueue *pf_pools_inactive; +#endif +extern int pf_tbladdr_setup(struct pf_ruleset *, + struct pf_addr_wrap *); +extern void pf_tbladdr_remove(struct pf_addr_wrap *); +extern void pf_tbladdr_copyout(struct pf_addr_wrap *); +extern void pf_calc_skip_steps(struct pf_rulequeue *); +#ifdef __FreeBSD__ +#ifdef ALTQ +extern void pf_altq_ifnet_event(struct ifnet *, int); +#endif +VNET_DECLARE(uma_zone_t, pf_src_tree_pl); +#define V_pf_src_tree_pl VNET(pf_src_tree_pl) +VNET_DECLARE(uma_zone_t, pf_rule_pl); +#define V_pf_rule_pl VNET(pf_rule_pl) +VNET_DECLARE(uma_zone_t, pf_state_pl); +#define V_pf_state_pl VNET(pf_state_pl) +VNET_DECLARE(uma_zone_t, pf_state_key_pl); +#define V_pf_state_key_pl VNET(pf_state_key_pl) +VNET_DECLARE(uma_zone_t, pf_state_item_pl); +#define V_pf_state_item_pl VNET(pf_state_item_pl) +VNET_DECLARE(uma_zone_t, pf_altq_pl); +#define V_pf_altq_pl VNET(pf_altq_pl) +VNET_DECLARE(uma_zone_t, pf_pooladdr_pl); +#define V_pf_pooladdr_pl VNET(pf_pooladdr_pl) +VNET_DECLARE(uma_zone_t, pfr_ktable_pl); +#define V_pfr_ktable_pl VNET(pfr_ktable_pl) +VNET_DECLARE(uma_zone_t, pfr_kentry_pl); +#define V_pfr_kentry_pl VNET(pfr_kentry_pl) +VNET_DECLARE(uma_zone_t, pf_cache_pl); +#define V_pf_cache_pl VNET(pf_cache_pl) +VNET_DECLARE(uma_zone_t, pf_cent_pl); +#define V_pf_cent_pl VNET(pf_cent_pl) +VNET_DECLARE(uma_zone_t, pf_state_scrub_pl); +#define V_pf_state_scrub_pl VNET(pf_state_scrub_pl) +VNET_DECLARE(uma_zone_t, pfi_addr_pl); +#define V_pfi_addr_pl VNET(pfi_addr_pl) +#else +extern struct pool pf_src_tree_pl, pf_rule_pl; +extern struct pool pf_state_pl, pf_state_key_pl, pf_state_item_pl, + pf_altq_pl, pf_pooladdr_pl; +extern struct pool pf_state_scrub_pl; +#endif +extern void pf_purge_thread(void *); +#ifdef __FreeBSD__ +extern int pf_purge_expired_src_nodes(int); +extern int pf_purge_expired_states(u_int32_t , int); +#else +extern void pf_purge_expired_src_nodes(int); +extern void pf_purge_expired_states(u_int32_t); +#endif +extern void pf_unlink_state(struct pf_state *); +extern void pf_free_state(struct pf_state *); +extern int pf_state_insert(struct pfi_kif *, + struct pf_state_key *, + struct pf_state_key *, + struct pf_state *); +extern int pf_insert_src_node(struct pf_src_node **, + struct pf_rule *, struct pf_addr *, + sa_family_t); +void pf_src_tree_remove_state(struct pf_state *); +extern struct pf_state *pf_find_state_byid(struct pf_state_cmp *); +extern struct pf_state *pf_find_state_all(struct pf_state_key_cmp *, + u_int, int *); +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); + +#ifdef __FreeBSD__ +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) +#else +extern struct ifnet *sync_ifp; +extern struct pf_rule pf_default_rule; +#endif +extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, + u_int8_t); +void pf_rm_rule(struct pf_rulequeue *, + struct pf_rule *); +#ifndef __FreeBSD__ +struct pf_divert *pf_find_divert(struct mbuf *); +#endif + +#ifdef INET +#ifdef __FreeBSD__ +int pf_test(int, struct ifnet *, struct mbuf **, struct ether_header *, + struct inpcb *); +#else +int pf_test(int, struct ifnet *, struct mbuf **, struct ether_header *); +#endif +#endif /* INET */ + +#ifdef INET6 +#ifdef __FreeBSD__ +int pf_test6(int, struct ifnet *, struct mbuf **, struct ether_header *, + struct inpcb *); +#else +int pf_test6(int, struct ifnet *, struct mbuf **, struct ether_header *); +#endif +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); +#endif /* INET6 */ + +#ifdef __FreeBSD__ +u_int32_t pf_new_isn(struct pf_state *); +#endif +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); +int pflog_packet(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 *); +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(u_int8_t, u_int32_t, u_int32_t, u_int32_t); +int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); +int pf_match_uid(u_int8_t, uid_t, uid_t, uid_t); +int pf_match_gid(u_int8_t, gid_t, gid_t, gid_t); + +void pf_normalize_init(void); +int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *, + struct pf_pdesc *); +int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *, + struct pf_pdesc *); +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_rtlabel_match(struct pf_addr *, sa_family_t, struct pf_addr_wrap *, + int); +#ifdef __FreeBSD__ +int pf_socket_lookup(int, struct pf_pdesc *, struct inpcb *); +#else +int pf_socket_lookup(int, struct pf_pdesc *); +#endif +struct pf_state_key *pf_alloc_state_key(int); +void pf_pkt_addr_changed(struct mbuf *); +int pf_state_key_attach(struct pf_state_key *, struct pf_state *, int); +void pfr_initialize(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 *, + struct pf_addr **, 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 *, int); +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); + +#ifdef __FreeBSD__ +VNET_DECLARE(struct pfi_kif *, pfi_all); +#define V_pfi_all VNET(pfi_all) +#else +extern struct pfi_kif *pfi_all; +#endif + +void pfi_initialize(void); +#ifdef __FreeBSD__ +void pfi_cleanup(void); +#endif +struct pfi_kif *pfi_kif_get(const char *); +void pfi_kif_ref(struct pfi_kif *, enum pfi_kif_refs); +void pfi_kif_unref(struct pfi_kif *, enum pfi_kif_refs); +int pfi_kif_match(struct pfi_kif *, struct pfi_kif *); +void pfi_attach_ifnet(struct ifnet *); +void pfi_detach_ifnet(struct ifnet *); +void pfi_attach_ifgroup(struct ifg_group *); +void pfi_detach_ifgroup(struct ifg_group *); +void pfi_group_change(const char *); +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 pf_addr_wrap *); +void pfi_dynaddr_copyout(struct pf_addr_wrap *); +void pfi_update_status(const char *, struct pf_status *); +int pfi_get_ifaces(const char *, struct pfi_kif *, int *); +int pfi_set_flags(const char *, int); +int pfi_clear_flags(const char *, int); + +#ifdef __FreeBSD__ +int pf_match_tag(struct mbuf *, struct pf_rule *, int *, + struct pf_mtag *); +#else +int pf_match_tag(struct mbuf *, struct pf_rule *, int *); +#endif +u_int16_t pf_tagname2tag(char *); +void pf_tag2tagname(u_int16_t, char *); +void pf_tag_ref(u_int16_t); +void pf_tag_unref(u_int16_t); +#ifdef __FreeBSD__ +int pf_tag_packet(struct mbuf *, int, int, struct pf_mtag *); +#else +int pf_tag_packet(struct mbuf *, int, int); +#endif +u_int32_t pf_qname2qid(char *); +void pf_qid2qname(u_int32_t, char *); +void pf_qid_unref(u_int32_t); + +#ifdef __FreeBSD__ +VNET_DECLARE(struct pf_status, pf_status); +#define V_pf_status VNET(pf_status) +#else +extern struct pf_status pf_status; +#endif + +#ifdef __FreeBSD__ +VNET_DECLARE(uma_zone_t, pf_frent_pl); +#define V_pf_frent_pl VNET(pf_frent_pl) +VNET_DECLARE(uma_zone_t, pf_frag_pl); +#define V_pf_frag_pl VNET(pf_frag_pl) +VNET_DECLARE(struct sx, pf_consistency_lock); +#define V_pf_consistency_lock VNET(pf_consistency_lock) +#else +extern struct pool pf_frent_pl, pf_frag_pl; +extern struct rwlock pf_consistency_lock; +#endif + +struct pf_pool_limit { + void *pp; + unsigned limit; +}; +#ifdef __FreeBSD__ +VNET_DECLARE(struct pf_pool_limit, pf_pool_limits[PF_LIMIT_MAX]); +#define V_pf_pool_limits VNET(pf_pool_limits) +#else +extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX]; +#endif + +#ifdef __FreeBSD__ +struct pf_frent { + LIST_ENTRY(pf_frent) fr_next; + struct ip *fr_ip; + struct mbuf *fr_m; +}; + +struct pf_frcache { + LIST_ENTRY(pf_frcache) fr_next; + uint16_t fr_off; + uint16_t fr_end; +}; + +struct pf_fragment { + RB_ENTRY(pf_fragment) fr_entry; + TAILQ_ENTRY(pf_fragment) frag_next; + struct in_addr fr_src; + struct in_addr fr_dst; + u_int8_t fr_p; /* protocol of this fragment */ + u_int8_t fr_flags; /* status flags */ + u_int16_t fr_id; /* fragment id for reassemble */ + u_int16_t fr_max; /* fragment data max */ + u_int32_t fr_timeout; +#define fr_queue fr_u.fru_queue +#define fr_cache fr_u.fru_cache + union { + LIST_HEAD(pf_fragq, pf_frent) fru_queue; /* buffering */ + LIST_HEAD(pf_cacheq, pf_frcache) fru_cache; /* non-buf */ + } fr_u; +}; +#endif /* (__FreeBSD__) */ + +#endif /* _KERNEL */ + +#ifdef __FreeBSD__ +#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 +#else +extern struct pf_anchor_global pf_anchors; +extern struct pf_anchor pf_main_anchor; +#define pf_main_ruleset 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_anchor *pf_find_anchor(const char *); +struct pf_ruleset *pf_find_ruleset(const char *); +struct pf_ruleset *pf_find_or_create_ruleset(const char *); +void pf_rs_initialize(void); + +#ifndef __FreeBSD__ +#ifdef _KERNEL +int pf_anchor_copyout(const struct pf_ruleset *, + const struct pf_rule *, struct pfioc_rule *); +void pf_anchor_remove(struct pf_rule *); + +#endif /* _KERNEL */ +#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 */ +struct pf_osfp_enlist * + pf_osfp_fingerprint_hdr(const struct ip *, const struct ip6_hdr *, + const struct tcphdr *); +void pf_osfp_flush(void); +int pf_osfp_get(struct pf_osfp_ioctl *); +#ifdef __FreeBSD__ +int pf_osfp_initialize(void); +void pf_osfp_cleanup(void); +#else +void pf_osfp_initialize(void); +#endif +int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); +struct pf_os_fingerprint * + pf_osfp_validate(void); + +#ifdef _KERNEL +void pf_print_host(struct pf_addr *, u_int16_t, u_int8_t); + +void pf_step_into_anchor(int *, struct pf_ruleset **, int, + struct pf_rule **, struct pf_rule **, int *); +int pf_step_out_of_anchor(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_state_key **, struct pf_state_key **, + struct pf_addr *, struct pf_addr *, + u_int16_t, u_int16_t); + +int pf_state_key_setup(struct pf_pdesc *, struct pf_rule *, + struct pf_state_key **, struct pf_state_key **, + struct pf_state_key **, struct pf_state_key **, + struct pf_addr *, struct pf_addr *, + u_int16_t, u_int16_t); +#endif /* _KERNEL */ + + +#endif /* _NET_PFVAR_H_ */ |
