The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

FreeBSD/Linux Kernel Cross Reference
sys/net/pfvar.h

Version: -  FREEBSD  -  FREEBSD-13-STABLE  -  FREEBSD-13-0  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  l41  -  OPENBSD  -  linux-2.6  -  MK84  -  PLAN9  -  xnu-8792 
SearchContext: -  none  -  3  -  10 

    1 /*
    2  * Copyright (c) 2001 Daniel Hartmeier
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  *
    9  *    - Redistributions of source code must retain the above copyright
   10  *      notice, this list of conditions and the following disclaimer.
   11  *    - Redistributions in binary form must reproduce the above
   12  *      copyright notice, this list of conditions and the following
   13  *      disclaimer in the documentation and/or other materials provided
   14  *      with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   17  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   18  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
   19  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
   20  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
   21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
   22  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
   24  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
   26  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   27  * POSSIBILITY OF SUCH DAMAGE.
   28  *
   29  *      $OpenBSD: pfvar.h,v 1.282 2009/01/29 15:12:28 pyr Exp $
   30  *      $FreeBSD: releng/11.0/sys/net/pfvar.h 302156 2016-06-23 21:34:38Z bz $
   31  */
   32 
   33 #ifndef _NET_PFVAR_H_
   34 #define _NET_PFVAR_H_
   35 
   36 #include <sys/param.h>
   37 #include <sys/queue.h>
   38 #include <sys/counter.h>
   39 #include <sys/malloc.h>
   40 #include <sys/refcount.h>
   41 #include <sys/tree.h>
   42 #include <vm/uma.h>
   43 
   44 #include <net/radix.h>
   45 #include <netinet/in.h>
   46 
   47 #include <netpfil/pf/pf.h>
   48 #include <netpfil/pf/pf_altq.h>
   49 #include <netpfil/pf/pf_mtag.h>
   50 
   51 struct pf_addr {
   52         union {
   53                 struct in_addr          v4;
   54                 struct in6_addr         v6;
   55                 u_int8_t                addr8[16];
   56                 u_int16_t               addr16[8];
   57                 u_int32_t               addr32[4];
   58         } pfa;              /* 128-bit address */
   59 #define v4      pfa.v4
   60 #define v6      pfa.v6
   61 #define addr8   pfa.addr8
   62 #define addr16  pfa.addr16
   63 #define addr32  pfa.addr32
   64 };
   65 
   66 #define PFI_AFLAG_NETWORK       0x01
   67 #define PFI_AFLAG_BROADCAST     0x02
   68 #define PFI_AFLAG_PEER          0x04
   69 #define PFI_AFLAG_MODEMASK      0x07
   70 #define PFI_AFLAG_NOALIAS       0x08
   71 
   72 struct pf_addr_wrap {
   73         union {
   74                 struct {
   75                         struct pf_addr           addr;
   76                         struct pf_addr           mask;
   77                 }                        a;
   78                 char                     ifname[IFNAMSIZ];
   79                 char                     tblname[PF_TABLE_NAME_SIZE];
   80         }                        v;
   81         union {
   82                 struct pfi_dynaddr      *dyn;
   83                 struct pfr_ktable       *tbl;
   84                 int                      dyncnt;
   85                 int                      tblcnt;
   86         }                        p;
   87         u_int8_t                 type;          /* PF_ADDR_* */
   88         u_int8_t                 iflags;        /* PFI_AFLAG_* */
   89 };
   90 
   91 #ifdef _KERNEL
   92 
   93 struct pfi_dynaddr {
   94         TAILQ_ENTRY(pfi_dynaddr)         entry;
   95         struct pf_addr                   pfid_addr4;
   96         struct pf_addr                   pfid_mask4;
   97         struct pf_addr                   pfid_addr6;
   98         struct pf_addr                   pfid_mask6;
   99         struct pfr_ktable               *pfid_kt;
  100         struct pfi_kif                  *pfid_kif;
  101         int                              pfid_net;      /* mask or 128 */
  102         int                              pfid_acnt4;    /* address count IPv4 */
  103         int                              pfid_acnt6;    /* address count IPv6 */
  104         sa_family_t                      pfid_af;       /* rule af */
  105         u_int8_t                         pfid_iflags;   /* PFI_AFLAG_* */
  106 };
  107 
  108 /*
  109  * Address manipulation macros
  110  */
  111 #define HTONL(x)        (x) = htonl((__uint32_t)(x))
  112 #define HTONS(x)        (x) = htons((__uint16_t)(x))
  113 #define NTOHL(x)        (x) = ntohl((__uint32_t)(x))
  114 #define NTOHS(x)        (x) = ntohs((__uint16_t)(x))
  115 
  116 #define PF_NAME         "pf"
  117 
  118 #define PF_HASHROW_ASSERT(h)    mtx_assert(&(h)->lock, MA_OWNED)
  119 #define PF_HASHROW_LOCK(h)      mtx_lock(&(h)->lock)
  120 #define PF_HASHROW_UNLOCK(h)    mtx_unlock(&(h)->lock)
  121 
  122 #define PF_STATE_LOCK(s)                                                \
  123         do {                                                            \
  124                 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)];     \
  125                 PF_HASHROW_LOCK(_ih);                                   \
  126         } while (0)
  127 
  128 #define PF_STATE_UNLOCK(s)                                              \
  129         do {                                                            \
  130                 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH((s))];   \
  131                 PF_HASHROW_UNLOCK(_ih);                                 \
  132         } while (0)
  133 
  134 #ifdef INVARIANTS
  135 #define PF_STATE_LOCK_ASSERT(s)                                         \
  136         do {                                                            \
  137                 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)];     \
  138                 PF_HASHROW_ASSERT(_ih);                                 \
  139         } while (0)
  140 #else /* !INVARIANTS */
  141 #define PF_STATE_LOCK_ASSERT(s)         do {} while (0)
  142 #endif /* INVARIANTS */
  143 
  144 extern struct mtx pf_unlnkdrules_mtx;
  145 #define PF_UNLNKDRULES_LOCK()   mtx_lock(&pf_unlnkdrules_mtx)
  146 #define PF_UNLNKDRULES_UNLOCK() mtx_unlock(&pf_unlnkdrules_mtx)
  147 
  148 extern struct rwlock pf_rules_lock;
  149 #define PF_RULES_RLOCK()        rw_rlock(&pf_rules_lock)
  150 #define PF_RULES_RUNLOCK()      rw_runlock(&pf_rules_lock)
  151 #define PF_RULES_WLOCK()        rw_wlock(&pf_rules_lock)
  152 #define PF_RULES_WUNLOCK()      rw_wunlock(&pf_rules_lock)
  153 #define PF_RULES_ASSERT()       rw_assert(&pf_rules_lock, RA_LOCKED)
  154 #define PF_RULES_RASSERT()      rw_assert(&pf_rules_lock, RA_RLOCKED)
  155 #define PF_RULES_WASSERT()      rw_assert(&pf_rules_lock, RA_WLOCKED)
  156 
  157 #define PF_MODVER       1
  158 #define PFLOG_MODVER    1
  159 #define PFSYNC_MODVER   1
  160 
  161 #define PFLOG_MINVER    1
  162 #define PFLOG_PREFVER   PFLOG_MODVER
  163 #define PFLOG_MAXVER    1
  164 #define PFSYNC_MINVER   1
  165 #define PFSYNC_PREFVER  PFSYNC_MODVER
  166 #define PFSYNC_MAXVER   1
  167 
  168 #ifdef INET
  169 #ifndef INET6
  170 #define PF_INET_ONLY
  171 #endif /* ! INET6 */
  172 #endif /* INET */
  173 
  174 #ifdef INET6
  175 #ifndef INET
  176 #define PF_INET6_ONLY
  177 #endif /* ! INET */
  178 #endif /* INET6 */
  179 
  180 #ifdef INET
  181 #ifdef INET6
  182 #define PF_INET_INET6
  183 #endif /* INET6 */
  184 #endif /* INET */
  185 
  186 #else
  187 
  188 #define PF_INET_INET6
  189 
  190 #endif /* _KERNEL */
  191 
  192 /* Both IPv4 and IPv6 */
  193 #ifdef PF_INET_INET6
  194 
  195 #define PF_AEQ(a, b, c) \
  196         ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \
  197         (c == AF_INET6 && (a)->addr32[3] == (b)->addr32[3] && \
  198         (a)->addr32[2] == (b)->addr32[2] && \
  199         (a)->addr32[1] == (b)->addr32[1] && \
  200         (a)->addr32[0] == (b)->addr32[0])) \
  201 
  202 #define PF_ANEQ(a, b, c) \
  203         ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \
  204         (c == AF_INET6 && ((a)->addr32[0] != (b)->addr32[0] || \
  205         (a)->addr32[1] != (b)->addr32[1] || \
  206         (a)->addr32[2] != (b)->addr32[2] || \
  207         (a)->addr32[3] != (b)->addr32[3]))) \
  208 
  209 #define PF_AZERO(a, c) \
  210         ((c == AF_INET && !(a)->addr32[0]) || \
  211         (c == AF_INET6 && !(a)->addr32[0] && !(a)->addr32[1] && \
  212         !(a)->addr32[2] && !(a)->addr32[3] )) \
  213 
  214 #define PF_MATCHA(n, a, m, b, f) \
  215         pf_match_addr(n, a, m, b, f)
  216 
  217 #define PF_ACPY(a, b, f) \
  218         pf_addrcpy(a, b, f)
  219 
  220 #define PF_AINC(a, f) \
  221         pf_addr_inc(a, f)
  222 
  223 #define PF_POOLMASK(a, b, c, d, f) \
  224         pf_poolmask(a, b, c, d, f)
  225 
  226 #else
  227 
  228 /* Just IPv6 */
  229 
  230 #ifdef PF_INET6_ONLY
  231 
  232 #define PF_AEQ(a, b, c) \
  233         ((a)->addr32[3] == (b)->addr32[3] && \
  234         (a)->addr32[2] == (b)->addr32[2] && \
  235         (a)->addr32[1] == (b)->addr32[1] && \
  236         (a)->addr32[0] == (b)->addr32[0]) \
  237 
  238 #define PF_ANEQ(a, b, c) \
  239         ((a)->addr32[3] != (b)->addr32[3] || \
  240         (a)->addr32[2] != (b)->addr32[2] || \
  241         (a)->addr32[1] != (b)->addr32[1] || \
  242         (a)->addr32[0] != (b)->addr32[0]) \
  243 
  244 #define PF_AZERO(a, c) \
  245         (!(a)->addr32[0] && \
  246         !(a)->addr32[1] && \
  247         !(a)->addr32[2] && \
  248         !(a)->addr32[3] ) \
  249 
  250 #define PF_MATCHA(n, a, m, b, f) \
  251         pf_match_addr(n, a, m, b, f)
  252 
  253 #define PF_ACPY(a, b, f) \
  254         pf_addrcpy(a, b, f)
  255 
  256 #define PF_AINC(a, f) \
  257         pf_addr_inc(a, f)
  258 
  259 #define PF_POOLMASK(a, b, c, d, f) \
  260         pf_poolmask(a, b, c, d, f)
  261 
  262 #else
  263 
  264 /* Just IPv4 */
  265 #ifdef PF_INET_ONLY
  266 
  267 #define PF_AEQ(a, b, c) \
  268         ((a)->addr32[0] == (b)->addr32[0])
  269 
  270 #define PF_ANEQ(a, b, c) \
  271         ((a)->addr32[0] != (b)->addr32[0])
  272 
  273 #define PF_AZERO(a, c) \
  274         (!(a)->addr32[0])
  275 
  276 #define PF_MATCHA(n, a, m, b, f) \
  277         pf_match_addr(n, a, m, b, f)
  278 
  279 #define PF_ACPY(a, b, f) \
  280         (a)->v4.s_addr = (b)->v4.s_addr
  281 
  282 #define PF_AINC(a, f) \
  283         do { \
  284                 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \
  285         } while (0)
  286 
  287 #define PF_POOLMASK(a, b, c, d, f) \
  288         do { \
  289                 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \
  290                 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \
  291         } while (0)
  292 
  293 #endif /* PF_INET_ONLY */
  294 #endif /* PF_INET6_ONLY */
  295 #endif /* PF_INET_INET6 */
  296 
  297 /*
  298  * XXX callers not FIB-aware in our version of pf yet.
  299  * OpenBSD fixed it later it seems, 2010/05/07 13:33:16 claudio.
  300  */
  301 #define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid)                        \
  302         (                                                               \
  303                 (((aw)->type == PF_ADDR_NOROUTE &&                      \
  304                     pf_routable((x), (af), NULL, (rtid))) ||            \
  305                 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL &&  \
  306                     pf_routable((x), (af), (ifp), (rtid))) ||           \
  307                 ((aw)->type == PF_ADDR_TABLE &&                         \
  308                     !pfr_match_addr((aw)->p.tbl, (x), (af))) ||         \
  309                 ((aw)->type == PF_ADDR_DYNIFTL &&                       \
  310                     !pfi_match_addr((aw)->p.dyn, (x), (af))) ||         \
  311                 ((aw)->type == PF_ADDR_RANGE &&                         \
  312                     !pf_match_addr_range(&(aw)->v.a.addr,               \
  313                     &(aw)->v.a.mask, (x), (af))) ||                     \
  314                 ((aw)->type == PF_ADDR_ADDRMASK &&                      \
  315                     !PF_AZERO(&(aw)->v.a.mask, (af)) &&                 \
  316                     !PF_MATCHA(0, &(aw)->v.a.addr,                      \
  317                     &(aw)->v.a.mask, (x), (af))))) !=                   \
  318                 (neg)                                                   \
  319         )
  320 
  321 
  322 struct pf_rule_uid {
  323         uid_t            uid[2];
  324         u_int8_t         op;
  325 };
  326 
  327 struct pf_rule_gid {
  328         uid_t            gid[2];
  329         u_int8_t         op;
  330 };
  331 
  332 struct pf_rule_addr {
  333         struct pf_addr_wrap      addr;
  334         u_int16_t                port[2];
  335         u_int8_t                 neg;
  336         u_int8_t                 port_op;
  337 };
  338 
  339 struct pf_pooladdr {
  340         struct pf_addr_wrap              addr;
  341         TAILQ_ENTRY(pf_pooladdr)         entries;
  342         char                             ifname[IFNAMSIZ];
  343         struct pfi_kif                  *kif;
  344 };
  345 
  346 TAILQ_HEAD(pf_palist, pf_pooladdr);
  347 
  348 struct pf_poolhashkey {
  349         union {
  350                 u_int8_t                key8[16];
  351                 u_int16_t               key16[8];
  352                 u_int32_t               key32[4];
  353         } pfk;              /* 128-bit hash key */
  354 #define key8    pfk.key8
  355 #define key16   pfk.key16
  356 #define key32   pfk.key32
  357 };
  358 
  359 struct pf_pool {
  360         struct pf_palist         list;
  361         struct pf_pooladdr      *cur;
  362         struct pf_poolhashkey    key;
  363         struct pf_addr           counter;
  364         int                      tblidx;
  365         u_int16_t                proxy_port[2];
  366         u_int8_t                 opts;
  367 };
  368 
  369 
  370 /* A packed Operating System description for fingerprinting */
  371 typedef u_int32_t pf_osfp_t;
  372 #define PF_OSFP_ANY     ((pf_osfp_t)0)
  373 #define PF_OSFP_UNKNOWN ((pf_osfp_t)-1)
  374 #define PF_OSFP_NOMATCH ((pf_osfp_t)-2)
  375 
  376 struct pf_osfp_entry {
  377         SLIST_ENTRY(pf_osfp_entry) fp_entry;
  378         pf_osfp_t               fp_os;
  379         int                     fp_enflags;
  380 #define PF_OSFP_EXPANDED        0x001           /* expanded entry */
  381 #define PF_OSFP_GENERIC         0x002           /* generic signature */
  382 #define PF_OSFP_NODETAIL        0x004           /* no p0f details */
  383 #define PF_OSFP_LEN     32
  384         char                    fp_class_nm[PF_OSFP_LEN];
  385         char                    fp_version_nm[PF_OSFP_LEN];
  386         char                    fp_subtype_nm[PF_OSFP_LEN];
  387 };
  388 #define PF_OSFP_ENTRY_EQ(a, b) \
  389     ((a)->fp_os == (b)->fp_os && \
  390     memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \
  391     memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \
  392     memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0)
  393 
  394 /* handle pf_osfp_t packing */
  395 #define _FP_RESERVED_BIT        1  /* For the special negative #defines */
  396 #define _FP_UNUSED_BITS         1
  397 #define _FP_CLASS_BITS          10 /* OS Class (Windows, Linux) */
  398 #define _FP_VERSION_BITS        10 /* OS version (95, 98, NT, 2.4.54, 3.2) */
  399 #define _FP_SUBTYPE_BITS        10 /* patch level (NT SP4, SP3, ECN patch) */
  400 #define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \
  401         (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \
  402             ((1 << _FP_CLASS_BITS) - 1); \
  403         (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \
  404             ((1 << _FP_VERSION_BITS) - 1);\
  405         (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \
  406 } while(0)
  407 #define PF_OSFP_PACK(osfp, class, version, subtype) do { \
  408         (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \
  409             + _FP_SUBTYPE_BITS); \
  410         (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \
  411             _FP_SUBTYPE_BITS; \
  412         (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \
  413 } while(0)
  414 
  415 /* the fingerprint of an OSes TCP SYN packet */
  416 typedef u_int64_t       pf_tcpopts_t;
  417 struct pf_os_fingerprint {
  418         SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */
  419         pf_tcpopts_t            fp_tcpopts;     /* packed TCP options */
  420         u_int16_t               fp_wsize;       /* TCP window size */
  421         u_int16_t               fp_psize;       /* ip->ip_len */
  422         u_int16_t               fp_mss;         /* TCP MSS */
  423         u_int16_t               fp_flags;
  424 #define PF_OSFP_WSIZE_MOD       0x0001          /* Window modulus */
  425 #define PF_OSFP_WSIZE_DC        0x0002          /* Window don't care */
  426 #define PF_OSFP_WSIZE_MSS       0x0004          /* Window multiple of MSS */
  427 #define PF_OSFP_WSIZE_MTU       0x0008          /* Window multiple of MTU */
  428 #define PF_OSFP_PSIZE_MOD       0x0010          /* packet size modulus */
  429 #define PF_OSFP_PSIZE_DC        0x0020          /* packet size don't care */
  430 #define PF_OSFP_WSCALE          0x0040          /* TCP window scaling */
  431 #define PF_OSFP_WSCALE_MOD      0x0080          /* TCP window scale modulus */
  432 #define PF_OSFP_WSCALE_DC       0x0100          /* TCP window scale dont-care */
  433 #define PF_OSFP_MSS             0x0200          /* TCP MSS */
  434 #define PF_OSFP_MSS_MOD         0x0400          /* TCP MSS modulus */
  435 #define PF_OSFP_MSS_DC          0x0800          /* TCP MSS dont-care */
  436 #define PF_OSFP_DF              0x1000          /* IPv4 don't fragment bit */
  437 #define PF_OSFP_TS0             0x2000          /* Zero timestamp */
  438 #define PF_OSFP_INET6           0x4000          /* IPv6 */
  439         u_int8_t                fp_optcnt;      /* TCP option count */
  440         u_int8_t                fp_wscale;      /* TCP window scaling */
  441         u_int8_t                fp_ttl;         /* IPv4 TTL */
  442 #define PF_OSFP_MAXTTL_OFFSET   40
  443 /* TCP options packing */
  444 #define PF_OSFP_TCPOPT_NOP      0x0             /* TCP NOP option */
  445 #define PF_OSFP_TCPOPT_WSCALE   0x1             /* TCP window scaling option */
  446 #define PF_OSFP_TCPOPT_MSS      0x2             /* TCP max segment size opt */
  447 #define PF_OSFP_TCPOPT_SACK     0x3             /* TCP SACK OK option */
  448 #define PF_OSFP_TCPOPT_TS       0x4             /* TCP timestamp option */
  449 #define PF_OSFP_TCPOPT_BITS     3               /* bits used by each option */
  450 #define PF_OSFP_MAX_OPTS \
  451     (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \
  452     / PF_OSFP_TCPOPT_BITS
  453 
  454         SLIST_ENTRY(pf_os_fingerprint)  fp_next;
  455 };
  456 
  457 struct pf_osfp_ioctl {
  458         struct pf_osfp_entry    fp_os;
  459         pf_tcpopts_t            fp_tcpopts;     /* packed TCP options */
  460         u_int16_t               fp_wsize;       /* TCP window size */
  461         u_int16_t               fp_psize;       /* ip->ip_len */
  462         u_int16_t               fp_mss;         /* TCP MSS */
  463         u_int16_t               fp_flags;
  464         u_int8_t                fp_optcnt;      /* TCP option count */
  465         u_int8_t                fp_wscale;      /* TCP window scaling */
  466         u_int8_t                fp_ttl;         /* IPv4 TTL */
  467 
  468         int                     fp_getnum;      /* DIOCOSFPGET number */
  469 };
  470 
  471 
  472 union pf_rule_ptr {
  473         struct pf_rule          *ptr;
  474         u_int32_t                nr;
  475 };
  476 
  477 #define PF_ANCHOR_NAME_SIZE      64
  478 
  479 struct pf_rule {
  480         struct pf_rule_addr      src;
  481         struct pf_rule_addr      dst;
  482 #define PF_SKIP_IFP             0
  483 #define PF_SKIP_DIR             1
  484 #define PF_SKIP_AF              2
  485 #define PF_SKIP_PROTO           3
  486 #define PF_SKIP_SRC_ADDR        4
  487 #define PF_SKIP_SRC_PORT        5
  488 #define PF_SKIP_DST_ADDR        6
  489 #define PF_SKIP_DST_PORT        7
  490 #define PF_SKIP_COUNT           8
  491         union pf_rule_ptr        skip[PF_SKIP_COUNT];
  492 #define PF_RULE_LABEL_SIZE       64
  493         char                     label[PF_RULE_LABEL_SIZE];
  494         char                     ifname[IFNAMSIZ];
  495         char                     qname[PF_QNAME_SIZE];
  496         char                     pqname[PF_QNAME_SIZE];
  497 #define PF_TAG_NAME_SIZE         64
  498         char                     tagname[PF_TAG_NAME_SIZE];
  499         char                     match_tagname[PF_TAG_NAME_SIZE];
  500 
  501         char                     overload_tblname[PF_TABLE_NAME_SIZE];
  502 
  503         TAILQ_ENTRY(pf_rule)     entries;
  504         struct pf_pool           rpool;
  505 
  506         u_int64_t                evaluations;
  507         u_int64_t                packets[2];
  508         u_int64_t                bytes[2];
  509 
  510         struct pfi_kif          *kif;
  511         struct pf_anchor        *anchor;
  512         struct pfr_ktable       *overload_tbl;
  513 
  514         pf_osfp_t                os_fingerprint;
  515 
  516         int                      rtableid;
  517         u_int32_t                timeout[PFTM_MAX];
  518         u_int32_t                max_states;
  519         u_int32_t                max_src_nodes;
  520         u_int32_t                max_src_states;
  521         u_int32_t                max_src_conn;
  522         struct {
  523                 u_int32_t               limit;
  524                 u_int32_t               seconds;
  525         }                        max_src_conn_rate;
  526         u_int32_t                qid;
  527         u_int32_t                pqid;
  528         u_int32_t                rt_listid;
  529         u_int32_t                nr;
  530         u_int32_t                prob;
  531         uid_t                    cuid;
  532         pid_t                    cpid;
  533 
  534         counter_u64_t            states_cur;
  535         counter_u64_t            states_tot;
  536         counter_u64_t            src_nodes;
  537 
  538         u_int16_t                return_icmp;
  539         u_int16_t                return_icmp6;
  540         u_int16_t                max_mss;
  541         u_int16_t                tag;
  542         u_int16_t                match_tag;
  543         u_int16_t                scrub_flags;
  544 
  545         struct pf_rule_uid       uid;
  546         struct pf_rule_gid       gid;
  547 
  548         u_int32_t                rule_flag;
  549         u_int8_t                 action;
  550         u_int8_t                 direction;
  551         u_int8_t                 log;
  552         u_int8_t                 logif;
  553         u_int8_t                 quick;
  554         u_int8_t                 ifnot;
  555         u_int8_t                 match_tag_not;
  556         u_int8_t                 natpass;
  557 
  558 #define PF_STATE_NORMAL         0x1
  559 #define PF_STATE_MODULATE       0x2
  560 #define PF_STATE_SYNPROXY       0x3
  561         u_int8_t                 keep_state;
  562         sa_family_t              af;
  563         u_int8_t                 proto;
  564         u_int8_t                 type;
  565         u_int8_t                 code;
  566         u_int8_t                 flags;
  567         u_int8_t                 flagset;
  568         u_int8_t                 min_ttl;
  569         u_int8_t                 allow_opts;
  570         u_int8_t                 rt;
  571         u_int8_t                 return_ttl;
  572         u_int8_t                 tos;
  573         u_int8_t                 set_tos;
  574         u_int8_t                 anchor_relative;
  575         u_int8_t                 anchor_wildcard;
  576 
  577 #define PF_FLUSH                0x01
  578 #define PF_FLUSH_GLOBAL         0x02
  579         u_int8_t                 flush;
  580 #define PF_PRIO_ZERO            0xff            /* match "prio 0" packets */
  581 #define PF_PRIO_MAX             7
  582         u_int8_t                 prio;
  583         u_int8_t                 set_prio[2];
  584 
  585         struct {
  586                 struct pf_addr          addr;
  587                 u_int16_t               port;
  588         }                       divert;
  589 
  590         uint64_t                 u_states_cur;
  591         uint64_t                 u_states_tot;
  592         uint64_t                 u_src_nodes;
  593 };
  594 
  595 /* rule flags */
  596 #define PFRULE_DROP             0x0000
  597 #define PFRULE_RETURNRST        0x0001
  598 #define PFRULE_FRAGMENT         0x0002
  599 #define PFRULE_RETURNICMP       0x0004
  600 #define PFRULE_RETURN           0x0008
  601 #define PFRULE_NOSYNC           0x0010
  602 #define PFRULE_SRCTRACK         0x0020  /* track source states */
  603 #define PFRULE_RULESRCTRACK     0x0040  /* per rule */
  604 #define PFRULE_REFS             0x0080  /* rule has references */
  605 
  606 /* scrub flags */
  607 #define PFRULE_NODF             0x0100
  608 #define PFRULE_RANDOMID         0x0800
  609 #define PFRULE_REASSEMBLE_TCP   0x1000
  610 #define PFRULE_SET_TOS          0x2000
  611 
  612 /* rule flags again */
  613 #define PFRULE_IFBOUND          0x00010000      /* if-bound */
  614 #define PFRULE_STATESLOPPY      0x00020000      /* sloppy state tracking */
  615 
  616 #define PFSTATE_HIWAT           10000   /* default state table size */
  617 #define PFSTATE_ADAPT_START     6000    /* default adaptive timeout start */
  618 #define PFSTATE_ADAPT_END       12000   /* default adaptive timeout end */
  619 
  620 
  621 struct pf_threshold {
  622         u_int32_t       limit;
  623 #define PF_THRESHOLD_MULT       1000
  624 #define PF_THRESHOLD_MAX        0xffffffff / PF_THRESHOLD_MULT
  625         u_int32_t       seconds;
  626         u_int32_t       count;
  627         u_int32_t       last;
  628 };
  629 
  630 struct pf_src_node {
  631         LIST_ENTRY(pf_src_node) entry;
  632         struct pf_addr   addr;
  633         struct pf_addr   raddr;
  634         union pf_rule_ptr rule;
  635         struct pfi_kif  *kif;
  636         u_int64_t        bytes[2];
  637         u_int64_t        packets[2];
  638         u_int32_t        states;
  639         u_int32_t        conn;
  640         struct pf_threshold     conn_rate;
  641         u_int32_t        creation;
  642         u_int32_t        expire;
  643         sa_family_t      af;
  644         u_int8_t         ruletype;
  645 };
  646 
  647 #define PFSNODE_HIWAT           10000   /* default source node table size */
  648 
  649 struct pf_state_scrub {
  650         struct timeval  pfss_last;      /* time received last packet    */
  651         u_int32_t       pfss_tsecr;     /* last echoed timestamp        */
  652         u_int32_t       pfss_tsval;     /* largest timestamp            */
  653         u_int32_t       pfss_tsval0;    /* original timestamp           */
  654         u_int16_t       pfss_flags;
  655 #define PFSS_TIMESTAMP  0x0001          /* modulate timestamp           */
  656 #define PFSS_PAWS       0x0010          /* stricter PAWS checks         */
  657 #define PFSS_PAWS_IDLED 0x0020          /* was idle too long.  no PAWS  */
  658 #define PFSS_DATA_TS    0x0040          /* timestamp on data packets    */
  659 #define PFSS_DATA_NOTS  0x0080          /* no timestamp on data packets */
  660         u_int8_t        pfss_ttl;       /* stashed TTL                  */
  661         u_int8_t        pad;
  662         u_int32_t       pfss_ts_mod;    /* timestamp modulation         */
  663 };
  664 
  665 struct pf_state_host {
  666         struct pf_addr  addr;
  667         u_int16_t       port;
  668         u_int16_t       pad;
  669 };
  670 
  671 struct pf_state_peer {
  672         struct pf_state_scrub   *scrub; /* state is scrubbed            */
  673         u_int32_t       seqlo;          /* Max sequence number sent     */
  674         u_int32_t       seqhi;          /* Max the other end ACKd + win */
  675         u_int32_t       seqdiff;        /* Sequence number modulator    */
  676         u_int16_t       max_win;        /* largest window (pre scaling) */
  677         u_int16_t       mss;            /* Maximum segment size option  */
  678         u_int8_t        state;          /* active state level           */
  679         u_int8_t        wscale;         /* window scaling factor        */
  680         u_int8_t        tcp_est;        /* Did we reach TCPS_ESTABLISHED */
  681         u_int8_t        pad[1];
  682 };
  683 
  684 /* Keep synced with struct pf_state_key. */
  685 struct pf_state_key_cmp {
  686         struct pf_addr   addr[2];
  687         u_int16_t        port[2];
  688         sa_family_t      af;
  689         u_int8_t         proto;
  690         u_int8_t         pad[2];
  691 };
  692 
  693 struct pf_state_key {
  694         struct pf_addr   addr[2];
  695         u_int16_t        port[2];
  696         sa_family_t      af;
  697         u_int8_t         proto;
  698         u_int8_t         pad[2];
  699 
  700         LIST_ENTRY(pf_state_key) entry;
  701         TAILQ_HEAD(, pf_state)   states[2];
  702 };
  703 
  704 /* Keep synced with struct pf_state. */
  705 struct pf_state_cmp {
  706         u_int64_t                id;
  707         u_int32_t                creatorid;
  708         u_int8_t                 direction;
  709         u_int8_t                 pad[3];
  710 };
  711 
  712 struct pf_state {
  713         u_int64_t                id;
  714         u_int32_t                creatorid;
  715         u_int8_t                 direction;
  716         u_int8_t                 pad[3];
  717 
  718         u_int                    refs;
  719         TAILQ_ENTRY(pf_state)    sync_list;
  720         TAILQ_ENTRY(pf_state)    key_list[2];
  721         LIST_ENTRY(pf_state)     entry;
  722         struct pf_state_peer     src;
  723         struct pf_state_peer     dst;
  724         union pf_rule_ptr        rule;
  725         union pf_rule_ptr        anchor;
  726         union pf_rule_ptr        nat_rule;
  727         struct pf_addr           rt_addr;
  728         struct pf_state_key     *key[2];        /* addresses stack and wire  */
  729         struct pfi_kif          *kif;
  730         struct pfi_kif          *rt_kif;
  731         struct pf_src_node      *src_node;
  732         struct pf_src_node      *nat_src_node;
  733         u_int64_t                packets[2];
  734         u_int64_t                bytes[2];
  735         u_int32_t                creation;
  736         u_int32_t                expire;
  737         u_int32_t                pfsync_time;
  738         u_int16_t                tag;
  739         u_int8_t                 log;
  740         u_int8_t                 state_flags;
  741 #define PFSTATE_ALLOWOPTS       0x01
  742 #define PFSTATE_SLOPPY          0x02
  743 /*  was PFSTATE_PFLOW           0x04 */
  744 #define PFSTATE_NOSYNC          0x08
  745 #define PFSTATE_ACK             0x10
  746 #define PFSTATE_SETPRIO         0x0200
  747 #define PFSTATE_SETMASK   (PFSTATE_SETPRIO)
  748         u_int8_t                 timeout;
  749         u_int8_t                 sync_state; /* PFSYNC_S_x */
  750 
  751         /* XXX */
  752         u_int8_t                 sync_updates;
  753         u_int8_t                _tail[3];
  754 };
  755 
  756 /*
  757  * Unified state structures for pulling states out of the kernel
  758  * used by pfsync(4) and the pf(4) ioctl.
  759  */
  760 struct pfsync_state_scrub {
  761         u_int16_t       pfss_flags;
  762         u_int8_t        pfss_ttl;       /* stashed TTL          */
  763 #define PFSYNC_SCRUB_FLAG_VALID         0x01
  764         u_int8_t        scrub_flag;
  765         u_int32_t       pfss_ts_mod;    /* timestamp modulation */
  766 } __packed;
  767 
  768 struct pfsync_state_peer {
  769         struct pfsync_state_scrub scrub;        /* state is scrubbed    */
  770         u_int32_t       seqlo;          /* Max sequence number sent     */
  771         u_int32_t       seqhi;          /* Max the other end ACKd + win */
  772         u_int32_t       seqdiff;        /* Sequence number modulator    */
  773         u_int16_t       max_win;        /* largest window (pre scaling) */
  774         u_int16_t       mss;            /* Maximum segment size option  */
  775         u_int8_t        state;          /* active state level           */
  776         u_int8_t        wscale;         /* window scaling factor        */
  777         u_int8_t        pad[6];
  778 } __packed;
  779 
  780 struct pfsync_state_key {
  781         struct pf_addr   addr[2];
  782         u_int16_t        port[2];
  783 };
  784 
  785 struct pfsync_state {
  786         u_int64_t        id;
  787         char             ifname[IFNAMSIZ];
  788         struct pfsync_state_key key[2];
  789         struct pfsync_state_peer src;
  790         struct pfsync_state_peer dst;
  791         struct pf_addr   rt_addr;
  792         u_int32_t        rule;
  793         u_int32_t        anchor;
  794         u_int32_t        nat_rule;
  795         u_int32_t        creation;
  796         u_int32_t        expire;
  797         u_int32_t        packets[2][2];
  798         u_int32_t        bytes[2][2];
  799         u_int32_t        creatorid;
  800         sa_family_t      af;
  801         u_int8_t         proto;
  802         u_int8_t         direction;
  803         u_int8_t         __spare[2];
  804         u_int8_t         log;
  805         u_int8_t         state_flags;
  806         u_int8_t         timeout;
  807         u_int8_t         sync_flags;
  808         u_int8_t         updates;
  809 } __packed;
  810 
  811 #ifdef _KERNEL
  812 /* pfsync */
  813 typedef int             pfsync_state_import_t(struct pfsync_state *, u_int8_t);
  814 typedef void            pfsync_insert_state_t(struct pf_state *);
  815 typedef void            pfsync_update_state_t(struct pf_state *);
  816 typedef void            pfsync_delete_state_t(struct pf_state *);
  817 typedef void            pfsync_clear_states_t(u_int32_t, const char *);
  818 typedef int             pfsync_defer_t(struct pf_state *, struct mbuf *);
  819 
  820 extern pfsync_state_import_t    *pfsync_state_import_ptr;
  821 extern pfsync_insert_state_t    *pfsync_insert_state_ptr;
  822 extern pfsync_update_state_t    *pfsync_update_state_ptr;
  823 extern pfsync_delete_state_t    *pfsync_delete_state_ptr;
  824 extern pfsync_clear_states_t    *pfsync_clear_states_ptr;
  825 extern pfsync_defer_t           *pfsync_defer_ptr;
  826 
  827 void                    pfsync_state_export(struct pfsync_state *,
  828                             struct pf_state *);
  829 
  830 /* pflog */
  831 struct pf_ruleset;
  832 struct pf_pdesc;
  833 typedef int pflog_packet_t(struct pfi_kif *, struct mbuf *, sa_family_t,
  834     u_int8_t, u_int8_t, struct pf_rule *, struct pf_rule *,
  835     struct pf_ruleset *, struct pf_pdesc *, int);
  836 extern pflog_packet_t           *pflog_packet_ptr;
  837 
  838 #endif /* _KERNEL */
  839 
  840 #define PFSYNC_FLAG_SRCNODE     0x04
  841 #define PFSYNC_FLAG_NATSRCNODE  0x08
  842 
  843 /* for copies to/from network byte order */
  844 /* ioctl interface also uses network byte order */
  845 #define pf_state_peer_hton(s,d) do {            \
  846         (d)->seqlo = htonl((s)->seqlo);         \
  847         (d)->seqhi = htonl((s)->seqhi);         \
  848         (d)->seqdiff = htonl((s)->seqdiff);     \
  849         (d)->max_win = htons((s)->max_win);     \
  850         (d)->mss = htons((s)->mss);             \
  851         (d)->state = (s)->state;                \
  852         (d)->wscale = (s)->wscale;              \
  853         if ((s)->scrub) {                                               \
  854                 (d)->scrub.pfss_flags =                                 \
  855                     htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP);     \
  856                 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl;             \
  857                 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\
  858                 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID;        \
  859         }                                                               \
  860 } while (0)
  861 
  862 #define pf_state_peer_ntoh(s,d) do {            \
  863         (d)->seqlo = ntohl((s)->seqlo);         \
  864         (d)->seqhi = ntohl((s)->seqhi);         \
  865         (d)->seqdiff = ntohl((s)->seqdiff);     \
  866         (d)->max_win = ntohs((s)->max_win);     \
  867         (d)->mss = ntohs((s)->mss);             \
  868         (d)->state = (s)->state;                \
  869         (d)->wscale = (s)->wscale;              \
  870         if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID &&         \
  871             (d)->scrub != NULL) {                                       \
  872                 (d)->scrub->pfss_flags =                                \
  873                     ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP;      \
  874                 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl;             \
  875                 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\
  876         }                                                               \
  877 } while (0)
  878 
  879 #define pf_state_counter_hton(s,d) do {                         \
  880         d[0] = htonl((s>>32)&0xffffffff);                       \
  881         d[1] = htonl(s&0xffffffff);                             \
  882 } while (0)
  883 
  884 #define pf_state_counter_from_pfsync(s)                         \
  885         (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1]))
  886 
  887 #define pf_state_counter_ntoh(s,d) do {                         \
  888         d = ntohl(s[0]);                                        \
  889         d = d<<32;                                              \
  890         d += ntohl(s[1]);                                       \
  891 } while (0)
  892 
  893 TAILQ_HEAD(pf_rulequeue, pf_rule);
  894 
  895 struct pf_anchor;
  896 
  897 struct pf_ruleset {
  898         struct {
  899                 struct pf_rulequeue      queues[2];
  900                 struct {
  901                         struct pf_rulequeue     *ptr;
  902                         struct pf_rule          **ptr_array;
  903                         u_int32_t                rcount;
  904                         u_int32_t                ticket;
  905                         int                      open;
  906                 }                        active, inactive;
  907         }                        rules[PF_RULESET_MAX];
  908         struct pf_anchor        *anchor;
  909         u_int32_t                tticket;
  910         int                      tables;
  911         int                      topen;
  912 };
  913 
  914 RB_HEAD(pf_anchor_global, pf_anchor);
  915 RB_HEAD(pf_anchor_node, pf_anchor);
  916 struct pf_anchor {
  917         RB_ENTRY(pf_anchor)      entry_global;
  918         RB_ENTRY(pf_anchor)      entry_node;
  919         struct pf_anchor        *parent;
  920         struct pf_anchor_node    children;
  921         char                     name[PF_ANCHOR_NAME_SIZE];
  922         char                     path[MAXPATHLEN];
  923         struct pf_ruleset        ruleset;
  924         int                      refcnt;        /* anchor rules */
  925         int                      match; /* XXX: used for pfctl black magic */
  926 };
  927 RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare);
  928 RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare);
  929 
  930 #define PF_RESERVED_ANCHOR      "_pf"
  931 
  932 #define PFR_TFLAG_PERSIST       0x00000001
  933 #define PFR_TFLAG_CONST         0x00000002
  934 #define PFR_TFLAG_ACTIVE        0x00000004
  935 #define PFR_TFLAG_INACTIVE      0x00000008
  936 #define PFR_TFLAG_REFERENCED    0x00000010
  937 #define PFR_TFLAG_REFDANCHOR    0x00000020
  938 #define PFR_TFLAG_COUNTERS      0x00000040
  939 /* Adjust masks below when adding flags. */
  940 #define PFR_TFLAG_USRMASK       (PFR_TFLAG_PERSIST      | \
  941                                  PFR_TFLAG_CONST        | \
  942                                  PFR_TFLAG_COUNTERS)
  943 #define PFR_TFLAG_SETMASK       (PFR_TFLAG_ACTIVE       | \
  944                                  PFR_TFLAG_INACTIVE     | \
  945                                  PFR_TFLAG_REFERENCED   | \
  946                                  PFR_TFLAG_REFDANCHOR)
  947 #define PFR_TFLAG_ALLMASK       (PFR_TFLAG_PERSIST      | \
  948                                  PFR_TFLAG_CONST        | \
  949                                  PFR_TFLAG_ACTIVE       | \
  950                                  PFR_TFLAG_INACTIVE     | \
  951                                  PFR_TFLAG_REFERENCED   | \
  952                                  PFR_TFLAG_REFDANCHOR   | \
  953                                  PFR_TFLAG_COUNTERS)
  954 
  955 struct pf_anchor_stackframe;
  956 
  957 struct pfr_table {
  958         char                     pfrt_anchor[MAXPATHLEN];
  959         char                     pfrt_name[PF_TABLE_NAME_SIZE];
  960         u_int32_t                pfrt_flags;
  961         u_int8_t                 pfrt_fback;
  962 };
  963 
  964 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED,
  965         PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE,
  966         PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX };
  967 
  968 struct pfr_addr {
  969         union {
  970                 struct in_addr   _pfra_ip4addr;
  971                 struct in6_addr  _pfra_ip6addr;
  972         }                pfra_u;
  973         u_int8_t         pfra_af;
  974         u_int8_t         pfra_net;
  975         u_int8_t         pfra_not;
  976         u_int8_t         pfra_fback;
  977 };
  978 #define pfra_ip4addr    pfra_u._pfra_ip4addr
  979 #define pfra_ip6addr    pfra_u._pfra_ip6addr
  980 
  981 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX };
  982 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX };
  983 #define PFR_OP_XPASS    PFR_OP_ADDR_MAX
  984 
  985 struct pfr_astats {
  986         struct pfr_addr  pfras_a;
  987         u_int64_t        pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
  988         u_int64_t        pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
  989         long             pfras_tzero;
  990 };
  991 
  992 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX };
  993 
  994 struct pfr_tstats {
  995         struct pfr_table pfrts_t;
  996         u_int64_t        pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
  997         u_int64_t        pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
  998         u_int64_t        pfrts_match;
  999         u_int64_t        pfrts_nomatch;
 1000         long             pfrts_tzero;
 1001         int              pfrts_cnt;
 1002         int              pfrts_refcnt[PFR_REFCNT_MAX];
 1003 };
 1004 #define pfrts_name      pfrts_t.pfrt_name
 1005 #define pfrts_flags     pfrts_t.pfrt_flags
 1006 
 1007 #ifndef _SOCKADDR_UNION_DEFINED
 1008 #define _SOCKADDR_UNION_DEFINED
 1009 union sockaddr_union {
 1010         struct sockaddr         sa;
 1011         struct sockaddr_in      sin;
 1012         struct sockaddr_in6     sin6;
 1013 };
 1014 #endif /* _SOCKADDR_UNION_DEFINED */
 1015 
 1016 struct pfr_kcounters {
 1017         u_int64_t                pfrkc_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
 1018         u_int64_t                pfrkc_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
 1019 };
 1020 
 1021 SLIST_HEAD(pfr_kentryworkq, pfr_kentry);
 1022 struct pfr_kentry {
 1023         struct radix_node        pfrke_node[2];
 1024         union sockaddr_union     pfrke_sa;
 1025         SLIST_ENTRY(pfr_kentry)  pfrke_workq;
 1026         struct pfr_kcounters    *pfrke_counters;
 1027         long                     pfrke_tzero;
 1028         u_int8_t                 pfrke_af;
 1029         u_int8_t                 pfrke_net;
 1030         u_int8_t                 pfrke_not;
 1031         u_int8_t                 pfrke_mark;
 1032 };
 1033 
 1034 SLIST_HEAD(pfr_ktableworkq, pfr_ktable);
 1035 RB_HEAD(pfr_ktablehead, pfr_ktable);
 1036 struct pfr_ktable {
 1037         struct pfr_tstats        pfrkt_ts;
 1038         RB_ENTRY(pfr_ktable)     pfrkt_tree;
 1039         SLIST_ENTRY(pfr_ktable)  pfrkt_workq;
 1040         struct radix_node_head  *pfrkt_ip4;
 1041         struct radix_node_head  *pfrkt_ip6;
 1042         struct pfr_ktable       *pfrkt_shadow;
 1043         struct pfr_ktable       *pfrkt_root;
 1044         struct pf_ruleset       *pfrkt_rs;
 1045         long                     pfrkt_larg;
 1046         int                      pfrkt_nflags;
 1047 };
 1048 #define pfrkt_t         pfrkt_ts.pfrts_t
 1049 #define pfrkt_name      pfrkt_t.pfrt_name
 1050 #define pfrkt_anchor    pfrkt_t.pfrt_anchor
 1051 #define pfrkt_ruleset   pfrkt_t.pfrt_ruleset
 1052 #define pfrkt_flags     pfrkt_t.pfrt_flags
 1053 #define pfrkt_cnt       pfrkt_ts.pfrts_cnt
 1054 #define pfrkt_refcnt    pfrkt_ts.pfrts_refcnt
 1055 #define pfrkt_packets   pfrkt_ts.pfrts_packets
 1056 #define pfrkt_bytes     pfrkt_ts.pfrts_bytes
 1057 #define pfrkt_match     pfrkt_ts.pfrts_match
 1058 #define pfrkt_nomatch   pfrkt_ts.pfrts_nomatch
 1059 #define pfrkt_tzero     pfrkt_ts.pfrts_tzero
 1060 
 1061 /* keep synced with pfi_kif, used in RB_FIND */
 1062 struct pfi_kif_cmp {
 1063         char                             pfik_name[IFNAMSIZ];
 1064 };
 1065 
 1066 struct pfi_kif {
 1067         char                             pfik_name[IFNAMSIZ];
 1068         union {
 1069                 RB_ENTRY(pfi_kif)        _pfik_tree;
 1070                 LIST_ENTRY(pfi_kif)      _pfik_list;
 1071         } _pfik_glue;
 1072 #define pfik_tree       _pfik_glue._pfik_tree
 1073 #define pfik_list       _pfik_glue._pfik_list
 1074         u_int64_t                        pfik_packets[2][2][2];
 1075         u_int64_t                        pfik_bytes[2][2][2];
 1076         u_int32_t                        pfik_tzero;
 1077         u_int                            pfik_flags;
 1078         struct ifnet                    *pfik_ifp;
 1079         struct ifg_group                *pfik_group;
 1080         u_int                            pfik_rulerefs;
 1081         TAILQ_HEAD(, pfi_dynaddr)        pfik_dynaddrs;
 1082 };
 1083 
 1084 #define PFI_IFLAG_REFS          0x0001  /* has state references */
 1085 #define PFI_IFLAG_SKIP          0x0100  /* skip filtering on interface */
 1086 
 1087 struct pf_pdesc {
 1088         struct {
 1089                 int      done;
 1090                 uid_t    uid;
 1091                 gid_t    gid;
 1092         }                lookup;
 1093         u_int64_t        tot_len;       /* Make Mickey money */
 1094         union {
 1095                 struct tcphdr           *tcp;
 1096                 struct udphdr           *udp;
 1097                 struct icmp             *icmp;
 1098 #ifdef INET6
 1099                 struct icmp6_hdr        *icmp6;
 1100 #endif /* INET6 */
 1101                 void                    *any;
 1102         } hdr;
 1103 
 1104         struct pf_rule  *nat_rule;      /* nat/rdr rule applied to packet */
 1105         struct pf_addr  *src;           /* src address */
 1106         struct pf_addr  *dst;           /* dst address */
 1107         u_int16_t *sport;
 1108         u_int16_t *dport;
 1109         struct pf_mtag  *pf_mtag;
 1110 
 1111         u_int32_t        p_len;         /* total length of payload */
 1112 
 1113         u_int16_t       *ip_sum;
 1114         u_int16_t       *proto_sum;
 1115         u_int16_t        flags;         /* Let SCRUB trigger behavior in
 1116                                          * state code. Easier than tags */
 1117 #define PFDESC_TCP_NORM 0x0001          /* TCP shall be statefully scrubbed */
 1118 #define PFDESC_IP_REAS  0x0002          /* IP frags would've been reassembled */
 1119         sa_family_t      af;
 1120         u_int8_t         proto;
 1121         u_int8_t         tos;
 1122         u_int8_t         dir;           /* direction */
 1123         u_int8_t         sidx;          /* key index for source */
 1124         u_int8_t         didx;          /* key index for destination */
 1125 };
 1126 
 1127 /* flags for RDR options */
 1128 #define PF_DPORT_RANGE  0x01            /* Dest port uses range */
 1129 #define PF_RPORT_RANGE  0x02            /* RDR'ed port uses range */
 1130 
 1131 /* UDP state enumeration */
 1132 #define PFUDPS_NO_TRAFFIC       0
 1133 #define PFUDPS_SINGLE           1
 1134 #define PFUDPS_MULTIPLE         2
 1135 
 1136 #define PFUDPS_NSTATES          3       /* number of state levels */
 1137 
 1138 #define PFUDPS_NAMES { \
 1139         "NO_TRAFFIC", \
 1140         "SINGLE", \
 1141         "MULTIPLE", \
 1142         NULL \
 1143 }
 1144 
 1145 /* Other protocol state enumeration */
 1146 #define PFOTHERS_NO_TRAFFIC     0
 1147 #define PFOTHERS_SINGLE         1
 1148 #define PFOTHERS_MULTIPLE       2
 1149 
 1150 #define PFOTHERS_NSTATES        3       /* number of state levels */
 1151 
 1152 #define PFOTHERS_NAMES { \
 1153         "NO_TRAFFIC", \
 1154         "SINGLE", \
 1155         "MULTIPLE", \
 1156         NULL \
 1157 }
 1158 
 1159 #define ACTION_SET(a, x) \
 1160         do { \
 1161                 if ((a) != NULL) \
 1162                         *(a) = (x); \
 1163         } while (0)
 1164 
 1165 #define REASON_SET(a, x) \
 1166         do { \
 1167                 if ((a) != NULL) \
 1168                         *(a) = (x); \
 1169                 if (x < PFRES_MAX) \
 1170                         counter_u64_add(V_pf_status.counters[x], 1); \
 1171         } while (0)
 1172 
 1173 struct pf_kstatus {
 1174         counter_u64_t   counters[PFRES_MAX]; /* reason for passing/dropping */
 1175         counter_u64_t   lcounters[LCNT_MAX]; /* limit counters */
 1176         counter_u64_t   fcounters[FCNT_MAX]; /* state operation counters */
 1177         counter_u64_t   scounters[SCNT_MAX]; /* src_node operation counters */
 1178         uint32_t        states;
 1179         uint32_t        src_nodes;
 1180         uint32_t        running;
 1181         uint32_t        since;
 1182         uint32_t        debug;
 1183         uint32_t        hostid;
 1184         char            ifname[IFNAMSIZ];
 1185         uint8_t         pf_chksum[PF_MD5_DIGEST_LENGTH];
 1186 };
 1187 
 1188 struct pf_divert {
 1189         union {
 1190                 struct in_addr  ipv4;
 1191                 struct in6_addr ipv6;
 1192         }               addr;
 1193         u_int16_t       port;
 1194 };
 1195 
 1196 #define PFFRAG_FRENT_HIWAT      5000    /* Number of fragment entries */
 1197 #define PFR_KENTRY_HIWAT        200000  /* Number of table entries */
 1198 
 1199 /*
 1200  * ioctl parameter structures
 1201  */
 1202 
 1203 struct pfioc_pooladdr {
 1204         u_int32_t                action;
 1205         u_int32_t                ticket;
 1206         u_int32_t                nr;
 1207         u_int32_t                r_num;
 1208         u_int8_t                 r_action;
 1209         u_int8_t                 r_last;
 1210         u_int8_t                 af;
 1211         char                     anchor[MAXPATHLEN];
 1212         struct pf_pooladdr       addr;
 1213 };
 1214 
 1215 struct pfioc_rule {
 1216         u_int32_t        action;
 1217         u_int32_t        ticket;
 1218         u_int32_t        pool_ticket;
 1219         u_int32_t        nr;
 1220         char             anchor[MAXPATHLEN];
 1221         char             anchor_call[MAXPATHLEN];
 1222         struct pf_rule   rule;
 1223 };
 1224 
 1225 struct pfioc_natlook {
 1226         struct pf_addr   saddr;
 1227         struct pf_addr   daddr;
 1228         struct pf_addr   rsaddr;
 1229         struct pf_addr   rdaddr;
 1230         u_int16_t        sport;
 1231         u_int16_t        dport;
 1232         u_int16_t        rsport;
 1233         u_int16_t        rdport;
 1234         sa_family_t      af;
 1235         u_int8_t         proto;
 1236         u_int8_t         direction;
 1237 };
 1238 
 1239 struct pfioc_state {
 1240         struct pfsync_state     state;
 1241 };
 1242 
 1243 struct pfioc_src_node_kill {
 1244         sa_family_t psnk_af;
 1245         struct pf_rule_addr psnk_src;
 1246         struct pf_rule_addr psnk_dst;
 1247         u_int               psnk_killed;
 1248 };
 1249 
 1250 struct pfioc_state_kill {
 1251         struct pf_state_cmp     psk_pfcmp;
 1252         sa_family_t             psk_af;
 1253         int                     psk_proto;
 1254         struct pf_rule_addr     psk_src;
 1255         struct pf_rule_addr     psk_dst;
 1256         char                    psk_ifname[IFNAMSIZ];
 1257         char                    psk_label[PF_RULE_LABEL_SIZE];
 1258         u_int                   psk_killed;
 1259 };
 1260 
 1261 struct pfioc_states {
 1262         int     ps_len;
 1263         union {
 1264                 caddr_t                  psu_buf;
 1265                 struct pfsync_state     *psu_states;
 1266         } ps_u;
 1267 #define ps_buf          ps_u.psu_buf
 1268 #define ps_states       ps_u.psu_states
 1269 };
 1270 
 1271 struct pfioc_src_nodes {
 1272         int     psn_len;
 1273         union {
 1274                 caddr_t          psu_buf;
 1275                 struct pf_src_node      *psu_src_nodes;
 1276         } psn_u;
 1277 #define psn_buf         psn_u.psu_buf
 1278 #define psn_src_nodes   psn_u.psu_src_nodes
 1279 };
 1280 
 1281 struct pfioc_if {
 1282         char             ifname[IFNAMSIZ];
 1283 };
 1284 
 1285 struct pfioc_tm {
 1286         int              timeout;
 1287         int              seconds;
 1288 };
 1289 
 1290 struct pfioc_limit {
 1291         int              index;
 1292         unsigned         limit;
 1293 };
 1294 
 1295 struct pfioc_altq {
 1296         u_int32_t        action;
 1297         u_int32_t        ticket;
 1298         u_int32_t        nr;
 1299         struct pf_altq   altq;
 1300 };
 1301 
 1302 struct pfioc_qstats {
 1303         u_int32_t        ticket;
 1304         u_int32_t        nr;
 1305         void            *buf;
 1306         int              nbytes;
 1307         u_int8_t         scheduler;
 1308 };
 1309 
 1310 struct pfioc_ruleset {
 1311         u_int32_t        nr;
 1312         char             path[MAXPATHLEN];
 1313         char             name[PF_ANCHOR_NAME_SIZE];
 1314 };
 1315 
 1316 #define PF_RULESET_ALTQ         (PF_RULESET_MAX)
 1317 #define PF_RULESET_TABLE        (PF_RULESET_MAX+1)
 1318 struct pfioc_trans {
 1319         int              size;  /* number of elements */
 1320         int              esize; /* size of each element in bytes */
 1321         struct pfioc_trans_e {
 1322                 int             rs_num;
 1323                 char            anchor[MAXPATHLEN];
 1324                 u_int32_t       ticket;
 1325         }               *array;
 1326 };
 1327 
 1328 #define PFR_FLAG_ATOMIC         0x00000001      /* unused */
 1329 #define PFR_FLAG_DUMMY          0x00000002
 1330 #define PFR_FLAG_FEEDBACK       0x00000004
 1331 #define PFR_FLAG_CLSTATS        0x00000008
 1332 #define PFR_FLAG_ADDRSTOO       0x00000010
 1333 #define PFR_FLAG_REPLACE        0x00000020
 1334 #define PFR_FLAG_ALLRSETS       0x00000040
 1335 #define PFR_FLAG_ALLMASK        0x0000007F
 1336 #ifdef _KERNEL
 1337 #define PFR_FLAG_USERIOCTL      0x10000000
 1338 #endif
 1339 
 1340 struct pfioc_table {
 1341         struct pfr_table         pfrio_table;
 1342         void                    *pfrio_buffer;
 1343         int                      pfrio_esize;
 1344         int                      pfrio_size;
 1345         int                      pfrio_size2;
 1346         int                      pfrio_nadd;
 1347         int                      pfrio_ndel;
 1348         int                      pfrio_nchange;
 1349         int                      pfrio_flags;
 1350         u_int32_t                pfrio_ticket;
 1351 };
 1352 #define pfrio_exists    pfrio_nadd
 1353 #define pfrio_nzero     pfrio_nadd
 1354 #define pfrio_nmatch    pfrio_nadd
 1355 #define pfrio_naddr     pfrio_size2
 1356 #define pfrio_setflag   pfrio_size2
 1357 #define pfrio_clrflag   pfrio_nadd
 1358 
 1359 struct pfioc_iface {
 1360         char     pfiio_name[IFNAMSIZ];
 1361         void    *pfiio_buffer;
 1362         int      pfiio_esize;
 1363         int      pfiio_size;
 1364         int      pfiio_nzero;
 1365         int      pfiio_flags;
 1366 };
 1367 
 1368 
 1369 /*
 1370  * ioctl operations
 1371  */
 1372 
 1373 #define DIOCSTART       _IO  ('D',  1)
 1374 #define DIOCSTOP        _IO  ('D',  2)
 1375 #define DIOCADDRULE     _IOWR('D',  4, struct pfioc_rule)
 1376 #define DIOCGETRULES    _IOWR('D',  6, struct pfioc_rule)
 1377 #define DIOCGETRULE     _IOWR('D',  7, struct pfioc_rule)
 1378 /* XXX cut 8 - 17 */
 1379 #define DIOCCLRSTATES   _IOWR('D', 18, struct pfioc_state_kill)
 1380 #define DIOCGETSTATE    _IOWR('D', 19, struct pfioc_state)
 1381 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if)
 1382 #define DIOCGETSTATUS   _IOWR('D', 21, struct pf_status)
 1383 #define DIOCCLRSTATUS   _IO  ('D', 22)
 1384 #define DIOCNATLOOK     _IOWR('D', 23, struct pfioc_natlook)
 1385 #define DIOCSETDEBUG    _IOWR('D', 24, u_int32_t)
 1386 #define DIOCGETSTATES   _IOWR('D', 25, struct pfioc_states)
 1387 #define DIOCCHANGERULE  _IOWR('D', 26, struct pfioc_rule)
 1388 /* XXX cut 26 - 28 */
 1389 #define DIOCSETTIMEOUT  _IOWR('D', 29, struct pfioc_tm)
 1390 #define DIOCGETTIMEOUT  _IOWR('D', 30, struct pfioc_tm)
 1391 #define DIOCADDSTATE    _IOWR('D', 37, struct pfioc_state)
 1392 #define DIOCCLRRULECTRS _IO  ('D', 38)
 1393 #define DIOCGETLIMIT    _IOWR('D', 39, struct pfioc_limit)
 1394 #define DIOCSETLIMIT    _IOWR('D', 40, struct pfioc_limit)
 1395 #define DIOCKILLSTATES  _IOWR('D', 41, struct pfioc_state_kill)
 1396 #define DIOCSTARTALTQ   _IO  ('D', 42)
 1397 #define DIOCSTOPALTQ    _IO  ('D', 43)
 1398 #define DIOCADDALTQ     _IOWR('D', 45, struct pfioc_altq)
 1399 #define DIOCGETALTQS    _IOWR('D', 47, struct pfioc_altq)
 1400 #define DIOCGETALTQ     _IOWR('D', 48, struct pfioc_altq)
 1401 #define DIOCCHANGEALTQ  _IOWR('D', 49, struct pfioc_altq)
 1402 #define DIOCGETQSTATS   _IOWR('D', 50, struct pfioc_qstats)
 1403 #define DIOCBEGINADDRS  _IOWR('D', 51, struct pfioc_pooladdr)
 1404 #define DIOCADDADDR     _IOWR('D', 52, struct pfioc_pooladdr)
 1405 #define DIOCGETADDRS    _IOWR('D', 53, struct pfioc_pooladdr)
 1406 #define DIOCGETADDR     _IOWR('D', 54, struct pfioc_pooladdr)
 1407 #define DIOCCHANGEADDR  _IOWR('D', 55, struct pfioc_pooladdr)
 1408 /* XXX cut 55 - 57 */
 1409 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset)
 1410 #define DIOCGETRULESET  _IOWR('D', 59, struct pfioc_ruleset)
 1411 #define DIOCRCLRTABLES  _IOWR('D', 60, struct pfioc_table)
 1412 #define DIOCRADDTABLES  _IOWR('D', 61, struct pfioc_table)
 1413 #define DIOCRDELTABLES  _IOWR('D', 62, struct pfioc_table)
 1414 #define DIOCRGETTABLES  _IOWR('D', 63, struct pfioc_table)
 1415 #define DIOCRGETTSTATS  _IOWR('D', 64, struct pfioc_table)
 1416 #define DIOCRCLRTSTATS  _IOWR('D', 65, struct pfioc_table)
 1417 #define DIOCRCLRADDRS   _IOWR('D', 66, struct pfioc_table)
 1418 #define DIOCRADDADDRS   _IOWR('D', 67, struct pfioc_table)
 1419 #define DIOCRDELADDRS   _IOWR('D', 68, struct pfioc_table)
 1420 #define DIOCRSETADDRS   _IOWR('D', 69, struct pfioc_table)
 1421 #define DIOCRGETADDRS   _IOWR('D', 70, struct pfioc_table)
 1422 #define DIOCRGETASTATS  _IOWR('D', 71, struct pfioc_table)
 1423 #define DIOCRCLRASTATS  _IOWR('D', 72, struct pfioc_table)
 1424 #define DIOCRTSTADDRS   _IOWR('D', 73, struct pfioc_table)
 1425 #define DIOCRSETTFLAGS  _IOWR('D', 74, struct pfioc_table)
 1426 #define DIOCRINADEFINE  _IOWR('D', 77, struct pfioc_table)
 1427 #define DIOCOSFPFLUSH   _IO('D', 78)
 1428 #define DIOCOSFPADD     _IOWR('D', 79, struct pf_osfp_ioctl)
 1429 #define DIOCOSFPGET     _IOWR('D', 80, struct pf_osfp_ioctl)
 1430 #define DIOCXBEGIN      _IOWR('D', 81, struct pfioc_trans)
 1431 #define DIOCXCOMMIT     _IOWR('D', 82, struct pfioc_trans)
 1432 #define DIOCXROLLBACK   _IOWR('D', 83, struct pfioc_trans)
 1433 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes)
 1434 #define DIOCCLRSRCNODES _IO('D', 85)
 1435 #define DIOCSETHOSTID   _IOWR('D', 86, u_int32_t)
 1436 #define DIOCIGETIFACES  _IOWR('D', 87, struct pfioc_iface)
 1437 #define DIOCSETIFFLAG   _IOWR('D', 89, struct pfioc_iface)
 1438 #define DIOCCLRIFFLAG   _IOWR('D', 90, struct pfioc_iface)
 1439 #define DIOCKILLSRCNODES        _IOWR('D', 91, struct pfioc_src_node_kill)
 1440 struct pf_ifspeed {
 1441         char                    ifname[IFNAMSIZ];
 1442         u_int32_t               baudrate;
 1443 };
 1444 #define DIOCGIFSPEED    _IOWR('D', 92, struct pf_ifspeed)
 1445 
 1446 #ifdef _KERNEL
 1447 LIST_HEAD(pf_src_node_list, pf_src_node);
 1448 struct pf_srchash {
 1449         struct pf_src_node_list         nodes;
 1450         struct mtx                      lock;
 1451 };
 1452 
 1453 struct pf_keyhash {
 1454         LIST_HEAD(, pf_state_key)       keys;
 1455         struct mtx                      lock;
 1456 };
 1457 
 1458 struct pf_idhash {
 1459         LIST_HEAD(, pf_state)           states;
 1460         struct mtx                      lock;
 1461 };
 1462 
 1463 extern u_long           pf_hashmask;
 1464 extern u_long           pf_srchashmask;
 1465 #define PF_HASHSIZ      (32768)
 1466 VNET_DECLARE(struct pf_keyhash *, pf_keyhash);
 1467 VNET_DECLARE(struct pf_idhash *, pf_idhash);
 1468 #define V_pf_keyhash    VNET(pf_keyhash)
 1469 #define V_pf_idhash     VNET(pf_idhash)
 1470 VNET_DECLARE(struct pf_srchash *, pf_srchash);
 1471 #define V_pf_srchash    VNET(pf_srchash)
 1472 
 1473 #define PF_IDHASH(s)    (be64toh((s)->id) % (pf_hashmask + 1))
 1474 
 1475 VNET_DECLARE(void *, pf_swi_cookie);
 1476 #define V_pf_swi_cookie VNET(pf_swi_cookie)
 1477 
 1478 VNET_DECLARE(uint64_t, pf_stateid[MAXCPU]);
 1479 #define V_pf_stateid    VNET(pf_stateid)
 1480 
 1481 TAILQ_HEAD(pf_altqqueue, pf_altq);
 1482 VNET_DECLARE(struct pf_altqqueue,        pf_altqs[2]);
 1483 #define V_pf_altqs                       VNET(pf_altqs)
 1484 VNET_DECLARE(struct pf_palist,           pf_pabuf);
 1485 #define V_pf_pabuf                       VNET(pf_pabuf)
 1486 
 1487 VNET_DECLARE(u_int32_t,                  ticket_altqs_active);
 1488 #define V_ticket_altqs_active            VNET(ticket_altqs_active)
 1489 VNET_DECLARE(u_int32_t,                  ticket_altqs_inactive);
 1490 #define V_ticket_altqs_inactive          VNET(ticket_altqs_inactive)
 1491 VNET_DECLARE(int,                        altqs_inactive_open);
 1492 #define V_altqs_inactive_open            VNET(altqs_inactive_open)
 1493 VNET_DECLARE(u_int32_t,                  ticket_pabuf);
 1494 #define V_ticket_pabuf                   VNET(ticket_pabuf)
 1495 VNET_DECLARE(struct pf_altqqueue *,      pf_altqs_active);
 1496 #define V_pf_altqs_active                VNET(pf_altqs_active)
 1497 VNET_DECLARE(struct pf_altqqueue *,      pf_altqs_inactive);
 1498 #define V_pf_altqs_inactive              VNET(pf_altqs_inactive)
 1499 
 1500 VNET_DECLARE(struct pf_rulequeue, pf_unlinked_rules);
 1501 #define V_pf_unlinked_rules     VNET(pf_unlinked_rules)
 1502 
 1503 void                             pf_initialize(void);
 1504 void                             pf_mtag_initialize(void);
 1505 void                             pf_mtag_cleanup(void);
 1506 void                             pf_cleanup(void);
 1507 
 1508 struct pf_mtag                  *pf_get_mtag(struct mbuf *);
 1509 
 1510 extern void                      pf_calc_skip_steps(struct pf_rulequeue *);
 1511 #ifdef ALTQ
 1512 extern  void                     pf_altq_ifnet_event(struct ifnet *, int);
 1513 #endif
 1514 VNET_DECLARE(uma_zone_t,         pf_state_z);
 1515 #define V_pf_state_z             VNET(pf_state_z)
 1516 VNET_DECLARE(uma_zone_t,         pf_state_key_z);
 1517 #define V_pf_state_key_z         VNET(pf_state_key_z)
 1518 VNET_DECLARE(uma_zone_t,         pf_state_scrub_z);
 1519 #define V_pf_state_scrub_z       VNET(pf_state_scrub_z)
 1520 
 1521 extern void                      pf_purge_thread(void *);
 1522 extern void                      pf_unload_vnet_purge(void);
 1523 extern void                      pf_intr(void *);
 1524 extern void                      pf_purge_expired_src_nodes(void);
 1525 
 1526 extern int                       pf_unlink_state(struct pf_state *, u_int);
 1527 #define PF_ENTER_LOCKED         0x00000001
 1528 #define PF_RETURN_LOCKED        0x00000002
 1529 extern int                       pf_state_insert(struct pfi_kif *,
 1530                                     struct pf_state_key *,
 1531                                     struct pf_state_key *,
 1532                                     struct pf_state *);
 1533 extern void                      pf_free_state(struct pf_state *);
 1534 
 1535 static __inline void
 1536 pf_ref_state(struct pf_state *s)
 1537 {
 1538 
 1539         refcount_acquire(&s->refs);
 1540 }
 1541 
 1542 static __inline int
 1543 pf_release_state(struct pf_state *s)
 1544 {
 1545 
 1546         if (refcount_release(&s->refs)) {
 1547                 pf_free_state(s);
 1548                 return (1);
 1549         } else
 1550                 return (0);
 1551 }
 1552 
 1553 extern struct pf_state          *pf_find_state_byid(uint64_t, uint32_t);
 1554 extern struct pf_state          *pf_find_state_all(struct pf_state_key_cmp *,
 1555                                     u_int, int *);
 1556 extern struct pf_src_node       *pf_find_src_node(struct pf_addr *,
 1557                                     struct pf_rule *, sa_family_t, int);
 1558 extern void                      pf_unlink_src_node(struct pf_src_node *);
 1559 extern u_int                     pf_free_src_nodes(struct pf_src_node_list *);
 1560 extern void                      pf_print_state(struct pf_state *);
 1561 extern void                      pf_print_flags(u_int8_t);
 1562 extern u_int16_t                 pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t,
 1563                                     u_int8_t);
 1564 extern u_int16_t                 pf_proto_cksum_fixup(struct mbuf *, u_int16_t,
 1565                                     u_int16_t, u_int16_t, u_int8_t);
 1566 
 1567 VNET_DECLARE(struct ifnet *,             sync_ifp);
 1568 #define V_sync_ifp                       VNET(sync_ifp);
 1569 VNET_DECLARE(struct pf_rule,             pf_default_rule);
 1570 #define V_pf_default_rule                 VNET(pf_default_rule)
 1571 extern void                      pf_addrcpy(struct pf_addr *, struct pf_addr *,
 1572                                     u_int8_t);
 1573 void                            pf_free_rule(struct pf_rule *);
 1574 
 1575 #ifdef INET
 1576 int     pf_test(int, struct ifnet *, struct mbuf **, struct inpcb *);
 1577 int     pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *,
 1578             struct pf_pdesc *);
 1579 #endif /* INET */
 1580 
 1581 #ifdef INET6
 1582 int     pf_test6(int, struct ifnet *, struct mbuf **, struct inpcb *);
 1583 int     pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *,
 1584             struct pf_pdesc *);
 1585 void    pf_poolmask(struct pf_addr *, struct pf_addr*,
 1586             struct pf_addr *, struct pf_addr *, u_int8_t);
 1587 void    pf_addr_inc(struct pf_addr *, sa_family_t);
 1588 int     pf_refragment6(struct ifnet *, struct mbuf **, struct m_tag *);
 1589 #endif /* INET6 */
 1590 
 1591 u_int32_t       pf_new_isn(struct pf_state *);
 1592 void   *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *,
 1593             sa_family_t);
 1594 void    pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t);
 1595 void    pf_change_proto_a(struct mbuf *, void *, u_int16_t *, u_int32_t,
 1596             u_int8_t);
 1597 void    pf_change_tcp_a(struct mbuf *, void *, u_int16_t *, u_int32_t);
 1598 void    pf_send_deferred_syn(struct pf_state *);
 1599 int     pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *,
 1600             struct pf_addr *, sa_family_t);
 1601 int     pf_match_addr_range(struct pf_addr *, struct pf_addr *,
 1602             struct pf_addr *, sa_family_t);
 1603 int     pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t);
 1604 
 1605 void    pf_normalize_init(void);
 1606 void    pf_normalize_cleanup(void);
 1607 int     pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *,
 1608             struct pf_pdesc *);
 1609 void    pf_normalize_tcp_cleanup(struct pf_state *);
 1610 int     pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *,
 1611             struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *);
 1612 int     pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *,
 1613             u_short *, struct tcphdr *, struct pf_state *,
 1614             struct pf_state_peer *, struct pf_state_peer *, int *);
 1615 u_int32_t
 1616         pf_state_expires(const struct pf_state *);
 1617 void    pf_purge_expired_fragments(void);
 1618 int     pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *,
 1619             int);
 1620 int     pf_socket_lookup(int, struct pf_pdesc *, struct mbuf *);
 1621 struct pf_state_key *pf_alloc_state_key(int);
 1622 void    pfr_initialize(void);
 1623 void    pfr_cleanup(void);
 1624 int     pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t);
 1625 void    pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t,
 1626             u_int64_t, int, int, int);
 1627 int     pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, sa_family_t);
 1628 void    pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *);
 1629 struct pfr_ktable *
 1630         pfr_attach_table(struct pf_ruleset *, char *);
 1631 void    pfr_detach_table(struct pfr_ktable *);
 1632 int     pfr_clr_tables(struct pfr_table *, int *, int);
 1633 int     pfr_add_tables(struct pfr_table *, int, int *, int);
 1634 int     pfr_del_tables(struct pfr_table *, int, int *, int);
 1635 int     pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int);
 1636 int     pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int);
 1637 int     pfr_clr_tstats(struct pfr_table *, int, int *, int);
 1638 int     pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int);
 1639 int     pfr_clr_addrs(struct pfr_table *, int *, int);
 1640 int     pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long);
 1641 int     pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
 1642             int);
 1643 int     pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
 1644             int);
 1645 int     pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
 1646             int *, int *, int *, int, u_int32_t);
 1647 int     pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int);
 1648 int     pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int);
 1649 int     pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *,
 1650             int);
 1651 int     pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
 1652             int);
 1653 int     pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int);
 1654 int     pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int);
 1655 int     pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int);
 1656 int     pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *,
 1657             int *, u_int32_t, int);
 1658 
 1659 MALLOC_DECLARE(PFI_MTYPE);
 1660 VNET_DECLARE(struct pfi_kif *,           pfi_all);
 1661 #define V_pfi_all                        VNET(pfi_all)
 1662 
 1663 void             pfi_initialize(void);
 1664 void             pfi_initialize_vnet(void);
 1665 void             pfi_cleanup(void);
 1666 void             pfi_cleanup_vnet(void);
 1667 void             pfi_kif_ref(struct pfi_kif *);
 1668 void             pfi_kif_unref(struct pfi_kif *);
 1669 struct pfi_kif  *pfi_kif_find(const char *);
 1670 struct pfi_kif  *pfi_kif_attach(struct pfi_kif *, const char *);
 1671 int              pfi_kif_match(struct pfi_kif *, struct pfi_kif *);
 1672 void             pfi_kif_purge(void);
 1673 int              pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *,
 1674                     sa_family_t);
 1675 int              pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t);
 1676 void             pfi_dynaddr_remove(struct pfi_dynaddr *);
 1677 void             pfi_dynaddr_copyout(struct pf_addr_wrap *);
 1678 void             pfi_update_status(const char *, struct pf_status *);
 1679 void             pfi_get_ifaces(const char *, struct pfi_kif *, int *);
 1680 int              pfi_set_flags(const char *, int);
 1681 int              pfi_clear_flags(const char *, int);
 1682 
 1683 int              pf_match_tag(struct mbuf *, struct pf_rule *, int *, int);
 1684 int              pf_tag_packet(struct mbuf *, struct pf_pdesc *, int);
 1685 int              pf_addr_cmp(struct pf_addr *, struct pf_addr *,
 1686                     sa_family_t);
 1687 void             pf_qid2qname(u_int32_t, char *);
 1688 
 1689 VNET_DECLARE(struct pf_kstatus, pf_status);
 1690 #define V_pf_status     VNET(pf_status)
 1691 
 1692 struct pf_limit {
 1693         uma_zone_t      zone;
 1694         u_int           limit;
 1695 };
 1696 VNET_DECLARE(struct pf_limit, pf_limits[PF_LIMIT_MAX]);
 1697 #define V_pf_limits VNET(pf_limits)
 1698 
 1699 #endif /* _KERNEL */
 1700 
 1701 #ifdef _KERNEL
 1702 VNET_DECLARE(struct pf_anchor_global,            pf_anchors);
 1703 #define V_pf_anchors                             VNET(pf_anchors)
 1704 VNET_DECLARE(struct pf_anchor,                   pf_main_anchor);
 1705 #define V_pf_main_anchor                         VNET(pf_main_anchor)
 1706 #define pf_main_ruleset V_pf_main_anchor.ruleset
 1707 #endif
 1708 
 1709 /* these ruleset functions can be linked into userland programs (pfctl) */
 1710 int                      pf_get_ruleset_number(u_int8_t);
 1711 void                     pf_init_ruleset(struct pf_ruleset *);
 1712 int                      pf_anchor_setup(struct pf_rule *,
 1713                             const struct pf_ruleset *, const char *);
 1714 int                      pf_anchor_copyout(const struct pf_ruleset *,
 1715                             const struct pf_rule *, struct pfioc_rule *);
 1716 void                     pf_anchor_remove(struct pf_rule *);
 1717 void                     pf_remove_if_empty_ruleset(struct pf_ruleset *);
 1718 struct pf_ruleset       *pf_find_ruleset(const char *);
 1719 struct pf_ruleset       *pf_find_or_create_ruleset(const char *);
 1720 void                     pf_rs_initialize(void);
 1721 
 1722 /* The fingerprint functions can be linked into userland programs (tcpdump) */
 1723 int     pf_osfp_add(struct pf_osfp_ioctl *);
 1724 #ifdef _KERNEL
 1725 struct pf_osfp_enlist *
 1726         pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int,
 1727             const struct tcphdr *);
 1728 #endif /* _KERNEL */
 1729 void    pf_osfp_flush(void);
 1730 int     pf_osfp_get(struct pf_osfp_ioctl *);
 1731 int     pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t);
 1732 
 1733 #ifdef _KERNEL
 1734 void                     pf_print_host(struct pf_addr *, u_int16_t, u_int8_t);
 1735 
 1736 void                     pf_step_into_anchor(struct pf_anchor_stackframe *, int *,
 1737                             struct pf_ruleset **, int, struct pf_rule **,
 1738                             struct pf_rule **, int *);
 1739 int                      pf_step_out_of_anchor(struct pf_anchor_stackframe *, int *,
 1740                             struct pf_ruleset **, int, struct pf_rule **,
 1741                             struct pf_rule **, int *);
 1742 
 1743 int                      pf_map_addr(u_int8_t, struct pf_rule *,
 1744                             struct pf_addr *, struct pf_addr *,
 1745                             struct pf_addr *, struct pf_src_node **);
 1746 struct pf_rule          *pf_get_translation(struct pf_pdesc *, struct mbuf *,
 1747                             int, int, struct pfi_kif *, struct pf_src_node **,
 1748                             struct pf_state_key **, struct pf_state_key **,
 1749                             struct pf_addr *, struct pf_addr *,
 1750                             uint16_t, uint16_t, struct pf_anchor_stackframe *);
 1751 
 1752 struct pf_state_key     *pf_state_key_setup(struct pf_pdesc *, struct pf_addr *,
 1753                             struct pf_addr *, u_int16_t, u_int16_t);
 1754 struct pf_state_key     *pf_state_key_clone(struct pf_state_key *);
 1755 #endif /* _KERNEL */
 1756 
 1757 #endif /* _NET_PFVAR_H_ */

Cache object: 34fc05faf9696603cdcdc73fccb13054


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]


This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.