13b3a8eb9SGleb Smirnoff /*- 23b3a8eb9SGleb Smirnoff * Copyright (c) 2004 Ruslan Ermilov and Vsevolod Lobko. 31a33e799SAlexander V. Chernikov * Copyright (c) 2014 Yandex LLC 41a33e799SAlexander V. Chernikov * Copyright (c) 2014 Alexander V. Chernikov 53b3a8eb9SGleb Smirnoff * 63b3a8eb9SGleb Smirnoff * Redistribution and use in source and binary forms, with or without 73b3a8eb9SGleb Smirnoff * modification, are permitted provided that the following conditions 83b3a8eb9SGleb Smirnoff * are met: 93b3a8eb9SGleb Smirnoff * 1. Redistributions of source code must retain the above copyright 103b3a8eb9SGleb Smirnoff * notice, this list of conditions and the following disclaimer. 113b3a8eb9SGleb Smirnoff * 2. Redistributions in binary form must reproduce the above copyright 123b3a8eb9SGleb Smirnoff * notice, this list of conditions and the following disclaimer in the 133b3a8eb9SGleb Smirnoff * documentation and/or other materials provided with the distribution. 143b3a8eb9SGleb Smirnoff * 153b3a8eb9SGleb Smirnoff * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 163b3a8eb9SGleb Smirnoff * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 173b3a8eb9SGleb Smirnoff * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 183b3a8eb9SGleb Smirnoff * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 193b3a8eb9SGleb Smirnoff * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 203b3a8eb9SGleb Smirnoff * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 213b3a8eb9SGleb Smirnoff * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 223b3a8eb9SGleb Smirnoff * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 233b3a8eb9SGleb Smirnoff * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 243b3a8eb9SGleb Smirnoff * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 253b3a8eb9SGleb Smirnoff * SUCH DAMAGE. 263b3a8eb9SGleb Smirnoff */ 273b3a8eb9SGleb Smirnoff 283b3a8eb9SGleb Smirnoff #include <sys/cdefs.h> 293b3a8eb9SGleb Smirnoff __FBSDID("$FreeBSD$"); 303b3a8eb9SGleb Smirnoff 313b3a8eb9SGleb Smirnoff /* 32563b5ab1SAlexander V. Chernikov * Lookup table support for ipfw. 333b3a8eb9SGleb Smirnoff * 34ac35ff17SAlexander V. Chernikov * This file contains handlers for all generic tables' operations: 35563b5ab1SAlexander V. Chernikov * add/del/flush entries, list/dump tables etc.. 363b3a8eb9SGleb Smirnoff * 371a33e799SAlexander V. Chernikov * Table data modification is protected by both UH and runtime lock 38563b5ab1SAlexander V. Chernikov * while reading configuration/data is protected by UH lock. 39563b5ab1SAlexander V. Chernikov * 40563b5ab1SAlexander V. Chernikov * Lookup algorithms for all table types are located in ip_fw_table_algo.c 413b3a8eb9SGleb Smirnoff */ 423b3a8eb9SGleb Smirnoff 433b3a8eb9SGleb Smirnoff #include "opt_ipfw.h" 443b3a8eb9SGleb Smirnoff 453b3a8eb9SGleb Smirnoff #include <sys/param.h> 463b3a8eb9SGleb Smirnoff #include <sys/systm.h> 473b3a8eb9SGleb Smirnoff #include <sys/malloc.h> 483b3a8eb9SGleb Smirnoff #include <sys/kernel.h> 493b3a8eb9SGleb Smirnoff #include <sys/lock.h> 503b3a8eb9SGleb Smirnoff #include <sys/rwlock.h> 51ccba94b8SAlexander V. Chernikov #include <sys/rmlock.h> 523b3a8eb9SGleb Smirnoff #include <sys/socket.h> 53f1220db8SAlexander V. Chernikov #include <sys/socketvar.h> 543b3a8eb9SGleb Smirnoff #include <sys/queue.h> 553b3a8eb9SGleb Smirnoff #include <net/if.h> /* ip_fw.h requires IFNAMSIZ */ 563b3a8eb9SGleb Smirnoff 573b3a8eb9SGleb Smirnoff #include <netinet/in.h> 583b3a8eb9SGleb Smirnoff #include <netinet/ip_var.h> /* struct ipfw_rule_ref */ 593b3a8eb9SGleb Smirnoff #include <netinet/ip_fw.h> 603b3a8eb9SGleb Smirnoff 613b3a8eb9SGleb Smirnoff #include <netpfil/ipfw/ip_fw_private.h> 62ea761a5dSAlexander V. Chernikov #include <netpfil/ipfw/ip_fw_table.h> 633b3a8eb9SGleb Smirnoff 643b3a8eb9SGleb Smirnoff /* 65b074b7bbSAlexander V. Chernikov * Table has the following `type` concepts: 66b074b7bbSAlexander V. Chernikov * 67c21034b7SAlexander V. Chernikov * `no.type` represents lookup key type (addr, ifp, uid, etc..) 680cba2b28SAlexander V. Chernikov * vmask represents bitmask of table values which are present at the moment. 690cba2b28SAlexander V. Chernikov * Special IPFW_VTYPE_LEGACY ( (uint32_t)-1 ) represents old 700cba2b28SAlexander V. Chernikov * single-value-for-all approach. 71b074b7bbSAlexander V. Chernikov */ 72b074b7bbSAlexander V. Chernikov struct table_config { 73b074b7bbSAlexander V. Chernikov struct named_object no; 74914bffb6SAlexander V. Chernikov uint8_t tflags; /* type flags */ 754f43138aSAlexander V. Chernikov uint8_t locked; /* 1 if locked from changes */ 76adf3b2b9SAlexander V. Chernikov uint8_t linked; /* 1 if already linked */ 77adf3b2b9SAlexander V. Chernikov uint8_t ochanged; /* used by set swapping */ 780cba2b28SAlexander V. Chernikov uint8_t vshared; /* 1 if using shared value array */ 790cba2b28SAlexander V. Chernikov uint8_t spare[3]; 800cba2b28SAlexander V. Chernikov uint32_t count; /* Number of records */ 810cba2b28SAlexander V. Chernikov uint32_t limit; /* Max number of records */ 820cba2b28SAlexander V. Chernikov uint32_t vmask; /* bitmask with supported values */ 83a73d728dSAlexander V. Chernikov uint32_t ocount; /* used by set swapping */ 84a73d728dSAlexander V. Chernikov uint64_t gencnt; /* generation count */ 85b074b7bbSAlexander V. Chernikov char tablename[64]; /* table name */ 869f7d47b0SAlexander V. Chernikov struct table_algo *ta; /* Callbacks for given algo */ 879f7d47b0SAlexander V. Chernikov void *astate; /* algorithm state */ 884c060d85SAlexander V. Chernikov struct table_info ti_copy; /* data to put to table_info */ 890cba2b28SAlexander V. Chernikov struct namedobj_instance *vi; 90b074b7bbSAlexander V. Chernikov }; 91b074b7bbSAlexander V. Chernikov 92b074b7bbSAlexander V. Chernikov static struct table_config *find_table(struct namedobj_instance *ni, 93b074b7bbSAlexander V. Chernikov struct tid_info *ti); 9468394ec8SAlexander V. Chernikov static struct table_config *alloc_table_config(struct ip_fw_chain *ch, 950cba2b28SAlexander V. Chernikov struct tid_info *ti, struct table_algo *ta, char *adata, uint8_t tflags); 96b074b7bbSAlexander V. Chernikov static void free_table_config(struct namedobj_instance *ni, 97b074b7bbSAlexander V. Chernikov struct table_config *tc); 98db785d31SAlexander V. Chernikov static int create_table_internal(struct ip_fw_chain *ch, struct tid_info *ti, 99867708f7SAlexander V. Chernikov char *aname, ipfw_xtable_info *i, uint16_t *pkidx, int ref); 1000468c5baSAlexander V. Chernikov static void link_table(struct ip_fw_chain *ch, struct table_config *tc); 1010468c5baSAlexander V. Chernikov static void unlink_table(struct ip_fw_chain *ch, struct table_config *tc); 1024dff4ae0SAlexander V. Chernikov static int find_ref_table(struct ip_fw_chain *ch, struct tid_info *ti, 103867708f7SAlexander V. Chernikov struct tentry_info *tei, uint32_t count, int op, struct table_config **ptc); 1044dff4ae0SAlexander V. Chernikov #define OP_ADD 1 1054dff4ae0SAlexander V. Chernikov #define OP_DEL 0 1062d99a349SAlexander V. Chernikov static int export_tables(struct ip_fw_chain *ch, ipfw_obj_lheader *olh, 1072d99a349SAlexander V. Chernikov struct sockopt_data *sd); 108ac35ff17SAlexander V. Chernikov static void export_table_info(struct ip_fw_chain *ch, struct table_config *tc, 109ac35ff17SAlexander V. Chernikov ipfw_xtable_info *i); 11081d3153dSAlexander V. Chernikov static int dump_table_tentry(void *e, void *arg); 111f1220db8SAlexander V. Chernikov static int dump_table_xentry(void *e, void *arg); 112b074b7bbSAlexander V. Chernikov 113a73d728dSAlexander V. Chernikov static int swap_tables(struct ip_fw_chain *ch, struct tid_info *a, 11446d52008SAlexander V. Chernikov struct tid_info *b); 115ac35ff17SAlexander V. Chernikov 1160cba2b28SAlexander V. Chernikov static int check_table_space(struct ip_fw_chain *ch, struct tableop_state *ts, 1170cba2b28SAlexander V. Chernikov struct table_config *tc, struct table_info *ti, uint32_t count); 118ac35ff17SAlexander V. Chernikov static int destroy_table(struct ip_fw_chain *ch, struct tid_info *ti); 119d3a4f924SAlexander V. Chernikov 1209f7d47b0SAlexander V. Chernikov static struct table_algo *find_table_algo(struct tables_config *tableconf, 1219490a627SAlexander V. Chernikov struct tid_info *ti, char *name); 122b074b7bbSAlexander V. Chernikov 12346d52008SAlexander V. Chernikov static void objheader_to_ti(struct _ipfw_obj_header *oh, struct tid_info *ti); 12446d52008SAlexander V. Chernikov static void ntlv_to_ti(struct _ipfw_obj_ntlv *ntlv, struct tid_info *ti); 125a73d728dSAlexander V. Chernikov static int classify_table_opcode(ipfw_insn *cmd, uint16_t *puidx, uint8_t *ptype); 12646d52008SAlexander V. Chernikov 127b074b7bbSAlexander V. Chernikov #define CHAIN_TO_NI(chain) (CHAIN_TO_TCFG(chain)->namehash) 1289f7d47b0SAlexander V. Chernikov #define KIDX_TO_TI(ch, k) (&(((struct table_info *)(ch)->tablestate)[k])) 129b074b7bbSAlexander V. Chernikov 130b6ee846eSAlexander V. Chernikov #define TA_BUF_SZ 128 /* On-stack buffer for add/delete state */ 131b6ee846eSAlexander V. Chernikov 1320cba2b28SAlexander V. Chernikov void 1330cba2b28SAlexander V. Chernikov rollback_toperation_state(struct ip_fw_chain *ch, void *object) 1340cba2b28SAlexander V. Chernikov { 1350cba2b28SAlexander V. Chernikov struct tables_config *tcfg; 1360cba2b28SAlexander V. Chernikov struct op_state *os; 1370cba2b28SAlexander V. Chernikov 1380cba2b28SAlexander V. Chernikov tcfg = CHAIN_TO_TCFG(ch); 1390cba2b28SAlexander V. Chernikov TAILQ_FOREACH(os, &tcfg->state_list, next) 140fb4b37a3SAlexander V. Chernikov os->func(object, os); 1410cba2b28SAlexander V. Chernikov } 1420cba2b28SAlexander V. Chernikov 1430cba2b28SAlexander V. Chernikov void 1440cba2b28SAlexander V. Chernikov add_toperation_state(struct ip_fw_chain *ch, struct tableop_state *ts) 1450cba2b28SAlexander V. Chernikov { 1460cba2b28SAlexander V. Chernikov struct tables_config *tcfg; 1470cba2b28SAlexander V. Chernikov 1480cba2b28SAlexander V. Chernikov tcfg = CHAIN_TO_TCFG(ch); 1490cba2b28SAlexander V. Chernikov TAILQ_INSERT_HEAD(&tcfg->state_list, &ts->opstate, next); 1500cba2b28SAlexander V. Chernikov } 1510cba2b28SAlexander V. Chernikov 1520cba2b28SAlexander V. Chernikov void 1530cba2b28SAlexander V. Chernikov del_toperation_state(struct ip_fw_chain *ch, struct tableop_state *ts) 1540cba2b28SAlexander V. Chernikov { 1550cba2b28SAlexander V. Chernikov struct tables_config *tcfg; 1560cba2b28SAlexander V. Chernikov 1570cba2b28SAlexander V. Chernikov tcfg = CHAIN_TO_TCFG(ch); 1580cba2b28SAlexander V. Chernikov TAILQ_REMOVE(&tcfg->state_list, &ts->opstate, next); 1590cba2b28SAlexander V. Chernikov } 1600cba2b28SAlexander V. Chernikov 1610cba2b28SAlexander V. Chernikov void 1620cba2b28SAlexander V. Chernikov tc_ref(struct table_config *tc) 1630cba2b28SAlexander V. Chernikov { 1640cba2b28SAlexander V. Chernikov 1650cba2b28SAlexander V. Chernikov tc->no.refcnt++; 1660cba2b28SAlexander V. Chernikov } 1670cba2b28SAlexander V. Chernikov 1680cba2b28SAlexander V. Chernikov void 1690cba2b28SAlexander V. Chernikov tc_unref(struct table_config *tc) 1700cba2b28SAlexander V. Chernikov { 1710cba2b28SAlexander V. Chernikov 1720cba2b28SAlexander V. Chernikov tc->no.refcnt--; 1730cba2b28SAlexander V. Chernikov } 1740cba2b28SAlexander V. Chernikov 1750cba2b28SAlexander V. Chernikov static struct table_value * 1760cba2b28SAlexander V. Chernikov get_table_value(struct ip_fw_chain *ch, struct table_config *tc, uint32_t kidx) 1770cba2b28SAlexander V. Chernikov { 1780cba2b28SAlexander V. Chernikov struct table_value *pval; 1790cba2b28SAlexander V. Chernikov 1800cba2b28SAlexander V. Chernikov pval = (struct table_value *)ch->valuestate; 1810cba2b28SAlexander V. Chernikov 1820cba2b28SAlexander V. Chernikov return (&pval[kidx]); 1830cba2b28SAlexander V. Chernikov } 1840cba2b28SAlexander V. Chernikov 1850cba2b28SAlexander V. Chernikov 1863a845e10SAlexander V. Chernikov /* 1873a845e10SAlexander V. Chernikov * Checks if we're able to insert/update entry @tei into table 1883a845e10SAlexander V. Chernikov * w.r.t @tc limits. 1893a845e10SAlexander V. Chernikov * May alter @tei to indicate insertion error / insert 1903a845e10SAlexander V. Chernikov * options. 1913a845e10SAlexander V. Chernikov * 1923a845e10SAlexander V. Chernikov * Returns 0 if operation can be performed/ 1933a845e10SAlexander V. Chernikov */ 1943a845e10SAlexander V. Chernikov static int 1953a845e10SAlexander V. Chernikov check_table_limit(struct table_config *tc, struct tentry_info *tei) 1963a845e10SAlexander V. Chernikov { 197b074b7bbSAlexander V. Chernikov 1983a845e10SAlexander V. Chernikov if (tc->limit == 0 || tc->count < tc->limit) 1993a845e10SAlexander V. Chernikov return (0); 2003a845e10SAlexander V. Chernikov 2013a845e10SAlexander V. Chernikov if ((tei->flags & TEI_FLAGS_UPDATE) == 0) { 2023a845e10SAlexander V. Chernikov /* Notify userland on error cause */ 2033a845e10SAlexander V. Chernikov tei->flags |= TEI_FLAGS_LIMIT; 2043a845e10SAlexander V. Chernikov return (EFBIG); 2053a845e10SAlexander V. Chernikov } 2063a845e10SAlexander V. Chernikov 2073a845e10SAlexander V. Chernikov /* 2083a845e10SAlexander V. Chernikov * We have UPDATE flag set. 2093a845e10SAlexander V. Chernikov * Permit updating record (if found), 2103a845e10SAlexander V. Chernikov * but restrict adding new one since we've 2113a845e10SAlexander V. Chernikov * already hit the limit. 2123a845e10SAlexander V. Chernikov */ 2133a845e10SAlexander V. Chernikov tei->flags |= TEI_FLAGS_DONTADD; 2143a845e10SAlexander V. Chernikov 2153a845e10SAlexander V. Chernikov return (0); 2163a845e10SAlexander V. Chernikov } 2173a845e10SAlexander V. Chernikov 2183a845e10SAlexander V. Chernikov /* 2191bc0d457SAlexander V. Chernikov * Convert algorithm callback return code into 2201bc0d457SAlexander V. Chernikov * one of pre-defined states known by userland. 2213a845e10SAlexander V. Chernikov */ 2221bc0d457SAlexander V. Chernikov static void 223867708f7SAlexander V. Chernikov store_tei_result(struct tentry_info *tei, int op, int error, uint32_t num) 2243b3a8eb9SGleb Smirnoff { 2251bc0d457SAlexander V. Chernikov int flag; 2263b3a8eb9SGleb Smirnoff 2271bc0d457SAlexander V. Chernikov flag = 0; 2281bc0d457SAlexander V. Chernikov 2291bc0d457SAlexander V. Chernikov switch (error) { 2301bc0d457SAlexander V. Chernikov case 0: 231867708f7SAlexander V. Chernikov if (op == OP_ADD && num != 0) 2321bc0d457SAlexander V. Chernikov flag = TEI_FLAGS_ADDED; 233867708f7SAlexander V. Chernikov if (op == OP_DEL) 2341bc0d457SAlexander V. Chernikov flag = TEI_FLAGS_DELETED; 2351bc0d457SAlexander V. Chernikov break; 2361bc0d457SAlexander V. Chernikov case ENOENT: 2371bc0d457SAlexander V. Chernikov flag = TEI_FLAGS_NOTFOUND; 2381bc0d457SAlexander V. Chernikov break; 2391bc0d457SAlexander V. Chernikov case EEXIST: 2401bc0d457SAlexander V. Chernikov flag = TEI_FLAGS_EXISTS; 2411bc0d457SAlexander V. Chernikov break; 2421bc0d457SAlexander V. Chernikov default: 2431bc0d457SAlexander V. Chernikov flag = TEI_FLAGS_ERROR; 2441bc0d457SAlexander V. Chernikov } 2451bc0d457SAlexander V. Chernikov 2461bc0d457SAlexander V. Chernikov tei->flags |= flag; 2471bc0d457SAlexander V. Chernikov } 2489f7d47b0SAlexander V. Chernikov 249f99fbf96SAlexander V. Chernikov /* 250f99fbf96SAlexander V. Chernikov * Creates and references table with default parameters. 251f99fbf96SAlexander V. Chernikov * Saves table config, algo and allocated kidx info @ptc, @pta and 252f99fbf96SAlexander V. Chernikov * @pkidx if non-zero. 253f99fbf96SAlexander V. Chernikov * Used for table auto-creation to support old binaries. 254f99fbf96SAlexander V. Chernikov * 255f99fbf96SAlexander V. Chernikov * Returns 0 on success. 256f99fbf96SAlexander V. Chernikov */ 2570468c5baSAlexander V. Chernikov static int 2580468c5baSAlexander V. Chernikov create_table_compat(struct ip_fw_chain *ch, struct tid_info *ti, 259867708f7SAlexander V. Chernikov uint16_t *pkidx) 2600468c5baSAlexander V. Chernikov { 2610468c5baSAlexander V. Chernikov ipfw_xtable_info xi; 2620468c5baSAlexander V. Chernikov int error; 2630468c5baSAlexander V. Chernikov 2640468c5baSAlexander V. Chernikov memset(&xi, 0, sizeof(xi)); 2650cba2b28SAlexander V. Chernikov /* Set default value mask for legacy clients */ 2660cba2b28SAlexander V. Chernikov xi.vmask = IPFW_VTYPE_LEGACY; 2670468c5baSAlexander V. Chernikov 268867708f7SAlexander V. Chernikov error = create_table_internal(ch, ti, NULL, &xi, pkidx, 1); 2690468c5baSAlexander V. Chernikov if (error != 0) 2700468c5baSAlexander V. Chernikov return (error); 2710468c5baSAlexander V. Chernikov 2720468c5baSAlexander V. Chernikov return (0); 2730468c5baSAlexander V. Chernikov } 2740468c5baSAlexander V. Chernikov 2759f7d47b0SAlexander V. Chernikov /* 2761bc0d457SAlexander V. Chernikov * Find and reference existing table optionally 2771bc0d457SAlexander V. Chernikov * creating new one. 2781bc0d457SAlexander V. Chernikov * 279867708f7SAlexander V. Chernikov * Saves found table config into @ptc. 280867708f7SAlexander V. Chernikov * Note function may drop/acquire UH_WLOCK. 2811bc0d457SAlexander V. Chernikov * Returns 0 if table was found/created and referenced 2821bc0d457SAlexander V. Chernikov * or non-zero return code. 2839f7d47b0SAlexander V. Chernikov */ 2841bc0d457SAlexander V. Chernikov static int 2851bc0d457SAlexander V. Chernikov find_ref_table(struct ip_fw_chain *ch, struct tid_info *ti, 2864dff4ae0SAlexander V. Chernikov struct tentry_info *tei, uint32_t count, int op, 287867708f7SAlexander V. Chernikov struct table_config **ptc) 2881bc0d457SAlexander V. Chernikov { 2891bc0d457SAlexander V. Chernikov struct namedobj_instance *ni; 2901bc0d457SAlexander V. Chernikov struct table_config *tc; 291867708f7SAlexander V. Chernikov uint16_t kidx; 2921bc0d457SAlexander V. Chernikov int error; 2931bc0d457SAlexander V. Chernikov 294867708f7SAlexander V. Chernikov IPFW_UH_WLOCK_ASSERT(ch); 2951bc0d457SAlexander V. Chernikov 2961bc0d457SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 2971bc0d457SAlexander V. Chernikov tc = NULL; 2989f7d47b0SAlexander V. Chernikov if ((tc = find_table(ni, ti)) != NULL) { 2999f7d47b0SAlexander V. Chernikov /* check table type */ 300867708f7SAlexander V. Chernikov if (tc->no.type != ti->type) 3013b3a8eb9SGleb Smirnoff return (EINVAL); 3023b3a8eb9SGleb Smirnoff 303867708f7SAlexander V. Chernikov if (tc->locked != 0) 3044f43138aSAlexander V. Chernikov return (EACCES); 3054f43138aSAlexander V. Chernikov 3064c0c07a5SAlexander V. Chernikov /* Try to exit early on limit hit */ 3074dff4ae0SAlexander V. Chernikov if (op == OP_ADD && count == 1 && 308867708f7SAlexander V. Chernikov check_table_limit(tc, tei) != 0) 3094c0c07a5SAlexander V. Chernikov return (EFBIG); 3104c0c07a5SAlexander V. Chernikov 311867708f7SAlexander V. Chernikov /* Reference and return */ 3129f7d47b0SAlexander V. Chernikov tc->no.refcnt++; 313867708f7SAlexander V. Chernikov *ptc = tc; 314867708f7SAlexander V. Chernikov return (0); 3159f7d47b0SAlexander V. Chernikov } 3163b3a8eb9SGleb Smirnoff 3174dff4ae0SAlexander V. Chernikov if (op == OP_DEL) 3181bc0d457SAlexander V. Chernikov return (ESRCH); 3191bc0d457SAlexander V. Chernikov 320db785d31SAlexander V. Chernikov /* Compability mode: create new table for old clients */ 321db785d31SAlexander V. Chernikov if ((tei->flags & TEI_FLAGS_COMPAT) == 0) 322db785d31SAlexander V. Chernikov return (ESRCH); 3233b3a8eb9SGleb Smirnoff 324867708f7SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 325867708f7SAlexander V. Chernikov error = create_table_compat(ch, ti, &kidx); 326867708f7SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 327867708f7SAlexander V. Chernikov 328db785d31SAlexander V. Chernikov if (error != 0) 329db785d31SAlexander V. Chernikov return (error); 330db785d31SAlexander V. Chernikov 331867708f7SAlexander V. Chernikov tc = (struct table_config *)ipfw_objhash_lookup_kidx(ni, kidx); 332867708f7SAlexander V. Chernikov KASSERT(tc != NULL, ("create_table_compat returned bad idx %d", kidx)); 333db785d31SAlexander V. Chernikov 334867708f7SAlexander V. Chernikov /* OK, now we've got referenced table. */ 3351bc0d457SAlexander V. Chernikov *ptc = tc; 3361bc0d457SAlexander V. Chernikov return (0); 3371bc0d457SAlexander V. Chernikov } 3381bc0d457SAlexander V. Chernikov 3391bc0d457SAlexander V. Chernikov /* 340867708f7SAlexander V. Chernikov * Rolls back already @added to @tc entries using state array @ta_buf_m. 3411bc0d457SAlexander V. Chernikov * Assume the following layout: 3421bc0d457SAlexander V. Chernikov * 1) ADD state (ta_buf_m[0] ... t_buf_m[added - 1]) for handling update cases 3431bc0d457SAlexander V. Chernikov * 2) DEL state (ta_buf_m[count[ ... t_buf_m[count + added - 1]) 3441bc0d457SAlexander V. Chernikov * for storing deleted state 3451bc0d457SAlexander V. Chernikov */ 3461bc0d457SAlexander V. Chernikov static void 3471bc0d457SAlexander V. Chernikov rollback_added_entries(struct ip_fw_chain *ch, struct table_config *tc, 3481bc0d457SAlexander V. Chernikov struct table_info *tinfo, struct tentry_info *tei, caddr_t ta_buf_m, 3491bc0d457SAlexander V. Chernikov uint32_t count, uint32_t added) 3501bc0d457SAlexander V. Chernikov { 3511bc0d457SAlexander V. Chernikov struct table_algo *ta; 3521bc0d457SAlexander V. Chernikov struct tentry_info *ptei; 3531bc0d457SAlexander V. Chernikov caddr_t v, vv; 3541bc0d457SAlexander V. Chernikov size_t ta_buf_sz; 3551bc0d457SAlexander V. Chernikov int error, i; 3561bc0d457SAlexander V. Chernikov uint32_t num; 3571bc0d457SAlexander V. Chernikov 3581bc0d457SAlexander V. Chernikov IPFW_UH_WLOCK_ASSERT(ch); 3591bc0d457SAlexander V. Chernikov 3601bc0d457SAlexander V. Chernikov ta = tc->ta; 3613a845e10SAlexander V. Chernikov ta_buf_sz = ta->ta_buf_size; 3621bc0d457SAlexander V. Chernikov v = ta_buf_m; 3631bc0d457SAlexander V. Chernikov vv = v + count * ta_buf_sz; 3641bc0d457SAlexander V. Chernikov for (i = 0; i < added; i++, v += ta_buf_sz, vv += ta_buf_sz) { 3651bc0d457SAlexander V. Chernikov ptei = &tei[i]; 3661bc0d457SAlexander V. Chernikov if ((ptei->flags & TEI_FLAGS_UPDATED) != 0) { 3671bc0d457SAlexander V. Chernikov 3681bc0d457SAlexander V. Chernikov /* 3691bc0d457SAlexander V. Chernikov * We have old value stored by previous 3701bc0d457SAlexander V. Chernikov * call in @ptei->value. Do add once again 3711bc0d457SAlexander V. Chernikov * to restore it. 3721bc0d457SAlexander V. Chernikov */ 3731bc0d457SAlexander V. Chernikov error = ta->add(tc->astate, tinfo, ptei, v, &num); 3741bc0d457SAlexander V. Chernikov KASSERT(error == 0, ("rollback UPDATE fail")); 3751bc0d457SAlexander V. Chernikov KASSERT(num == 0, ("rollback UPDATE fail2")); 3761bc0d457SAlexander V. Chernikov continue; 3771bc0d457SAlexander V. Chernikov } 3781bc0d457SAlexander V. Chernikov 3791bc0d457SAlexander V. Chernikov error = ta->prepare_del(ch, ptei, vv); 3801bc0d457SAlexander V. Chernikov KASSERT(error == 0, ("pre-rollback INSERT failed")); 3811bc0d457SAlexander V. Chernikov error = ta->del(tc->astate, tinfo, ptei, vv, &num); 3821bc0d457SAlexander V. Chernikov KASSERT(error == 0, ("rollback INSERT failed")); 3831bc0d457SAlexander V. Chernikov tc->count -= num; 3841bc0d457SAlexander V. Chernikov } 3851bc0d457SAlexander V. Chernikov } 3861bc0d457SAlexander V. Chernikov 3871bc0d457SAlexander V. Chernikov /* 3881bc0d457SAlexander V. Chernikov * Prepares add/del state for all @count entries in @tei. 3891bc0d457SAlexander V. Chernikov * Uses either stack buffer (@ta_buf) or allocates a new one. 3901bc0d457SAlexander V. Chernikov * Stores pointer to allocated buffer back to @ta_buf. 3911bc0d457SAlexander V. Chernikov * 3921bc0d457SAlexander V. Chernikov * Returns 0 on success. 3931bc0d457SAlexander V. Chernikov */ 3941bc0d457SAlexander V. Chernikov static int 3951bc0d457SAlexander V. Chernikov prepare_batch_buffer(struct ip_fw_chain *ch, struct table_algo *ta, 3964dff4ae0SAlexander V. Chernikov struct tentry_info *tei, uint32_t count, int op, caddr_t *ta_buf) 3971bc0d457SAlexander V. Chernikov { 3981bc0d457SAlexander V. Chernikov caddr_t ta_buf_m, v; 3991bc0d457SAlexander V. Chernikov size_t ta_buf_sz, sz; 4001bc0d457SAlexander V. Chernikov struct tentry_info *ptei; 4011bc0d457SAlexander V. Chernikov int error, i; 4021bc0d457SAlexander V. Chernikov 4031bc0d457SAlexander V. Chernikov error = 0; 4041bc0d457SAlexander V. Chernikov ta_buf_sz = ta->ta_buf_size; 4053a845e10SAlexander V. Chernikov if (count == 1) { 4061bc0d457SAlexander V. Chernikov /* Sigle add/delete, use on-stack buffer */ 4071bc0d457SAlexander V. Chernikov memset(*ta_buf, 0, TA_BUF_SZ); 4081bc0d457SAlexander V. Chernikov ta_buf_m = *ta_buf; 4093a845e10SAlexander V. Chernikov } else { 4103a845e10SAlexander V. Chernikov 4113a845e10SAlexander V. Chernikov /* 4121bc0d457SAlexander V. Chernikov * Multiple adds/deletes, allocate larger buffer 4131bc0d457SAlexander V. Chernikov * 4141bc0d457SAlexander V. Chernikov * Note we need 2xcount buffer for add case: 4151bc0d457SAlexander V. Chernikov * we have hold both ADD state 4163a845e10SAlexander V. Chernikov * and DELETE state (this may be needed 4173a845e10SAlexander V. Chernikov * if we need to rollback all changes) 4183a845e10SAlexander V. Chernikov */ 4191bc0d457SAlexander V. Chernikov sz = count * ta_buf_sz; 4204dff4ae0SAlexander V. Chernikov ta_buf_m = malloc((op == OP_ADD) ? sz * 2 : sz, M_TEMP, 4213a845e10SAlexander V. Chernikov M_WAITOK | M_ZERO); 4223a845e10SAlexander V. Chernikov } 4231bc0d457SAlexander V. Chernikov 4243a845e10SAlexander V. Chernikov v = ta_buf_m; 4253a845e10SAlexander V. Chernikov for (i = 0; i < count; i++, v += ta_buf_sz) { 4261bc0d457SAlexander V. Chernikov ptei = &tei[i]; 4274dff4ae0SAlexander V. Chernikov error = (op == OP_ADD) ? 4281bc0d457SAlexander V. Chernikov ta->prepare_add(ch, ptei, v) : ta->prepare_del(ch, ptei, v); 4293a845e10SAlexander V. Chernikov 4303a845e10SAlexander V. Chernikov /* 4313a845e10SAlexander V. Chernikov * Some syntax error (incorrect mask, or address, or 4323a845e10SAlexander V. Chernikov * anything). Return error regardless of atomicity 4333a845e10SAlexander V. Chernikov * settings. 4343a845e10SAlexander V. Chernikov */ 435db785d31SAlexander V. Chernikov if (error != 0) 4361bc0d457SAlexander V. Chernikov break; 4373a845e10SAlexander V. Chernikov } 4383b3a8eb9SGleb Smirnoff 4391bc0d457SAlexander V. Chernikov *ta_buf = ta_buf_m; 4401bc0d457SAlexander V. Chernikov return (error); 4411bc0d457SAlexander V. Chernikov } 4421bc0d457SAlexander V. Chernikov 4431bc0d457SAlexander V. Chernikov /* 4441bc0d457SAlexander V. Chernikov * Flushes allocated state for each @count entries in @tei. 4451bc0d457SAlexander V. Chernikov * Frees @ta_buf_m if differs from stack buffer @ta_buf. 4461bc0d457SAlexander V. Chernikov */ 4471bc0d457SAlexander V. Chernikov static void 4481bc0d457SAlexander V. Chernikov flush_batch_buffer(struct ip_fw_chain *ch, struct table_algo *ta, 449867708f7SAlexander V. Chernikov struct tentry_info *tei, uint32_t count, int rollback, 4501bc0d457SAlexander V. Chernikov caddr_t ta_buf_m, caddr_t ta_buf) 4511bc0d457SAlexander V. Chernikov { 4521bc0d457SAlexander V. Chernikov caddr_t v; 4530cba2b28SAlexander V. Chernikov struct tentry_info *ptei; 4541bc0d457SAlexander V. Chernikov size_t ta_buf_sz; 4551bc0d457SAlexander V. Chernikov int i; 4561bc0d457SAlexander V. Chernikov 4571bc0d457SAlexander V. Chernikov ta_buf_sz = ta->ta_buf_size; 4581bc0d457SAlexander V. Chernikov 4591bc0d457SAlexander V. Chernikov /* Run cleaning callback anyway */ 4601bc0d457SAlexander V. Chernikov v = ta_buf_m; 4610cba2b28SAlexander V. Chernikov for (i = 0; i < count; i++, v += ta_buf_sz) { 4620cba2b28SAlexander V. Chernikov ptei = &tei[i]; 4630cba2b28SAlexander V. Chernikov ta->flush_entry(ch, ptei, v); 4640cba2b28SAlexander V. Chernikov if (ptei->ptv != NULL) { 4650cba2b28SAlexander V. Chernikov free(ptei->ptv, M_IPFW); 4660cba2b28SAlexander V. Chernikov ptei->ptv = NULL; 4670cba2b28SAlexander V. Chernikov } 4680cba2b28SAlexander V. Chernikov } 4691bc0d457SAlexander V. Chernikov 4701bc0d457SAlexander V. Chernikov /* Clean up "deleted" state in case of rollback */ 4711bc0d457SAlexander V. Chernikov if (rollback != 0) { 4721bc0d457SAlexander V. Chernikov v = ta_buf_m + count * ta_buf_sz; 4731bc0d457SAlexander V. Chernikov for (i = 0; i < count; i++, v += ta_buf_sz) 4741bc0d457SAlexander V. Chernikov ta->flush_entry(ch, &tei[i], v); 4751bc0d457SAlexander V. Chernikov } 4761bc0d457SAlexander V. Chernikov 4771bc0d457SAlexander V. Chernikov if (ta_buf_m != ta_buf) 4781bc0d457SAlexander V. Chernikov free(ta_buf_m, M_TEMP); 4791bc0d457SAlexander V. Chernikov } 4801bc0d457SAlexander V. Chernikov 48171af39bfSAlexander V. Chernikov 48271af39bfSAlexander V. Chernikov static void 48371af39bfSAlexander V. Chernikov rollback_add_entry(void *object, struct op_state *_state) 48471af39bfSAlexander V. Chernikov { 48571af39bfSAlexander V. Chernikov struct ip_fw_chain *ch; 48671af39bfSAlexander V. Chernikov struct tableop_state *ts; 48771af39bfSAlexander V. Chernikov 48871af39bfSAlexander V. Chernikov ts = (struct tableop_state *)_state; 48971af39bfSAlexander V. Chernikov 49071af39bfSAlexander V. Chernikov if (ts->tc != object && ts->ch != object) 49171af39bfSAlexander V. Chernikov return; 49271af39bfSAlexander V. Chernikov 49371af39bfSAlexander V. Chernikov ch = ts->ch; 49471af39bfSAlexander V. Chernikov 49571af39bfSAlexander V. Chernikov IPFW_UH_WLOCK_ASSERT(ch); 49671af39bfSAlexander V. Chernikov 49771af39bfSAlexander V. Chernikov /* Call specifid unlockers */ 49871af39bfSAlexander V. Chernikov rollback_table_values(ts); 49971af39bfSAlexander V. Chernikov 50071af39bfSAlexander V. Chernikov /* Indicate we've called */ 50171af39bfSAlexander V. Chernikov ts->modified = 1; 50271af39bfSAlexander V. Chernikov } 50371af39bfSAlexander V. Chernikov 5041bc0d457SAlexander V. Chernikov /* 5051bc0d457SAlexander V. Chernikov * Adds/updates one or more entries in table @ti. 50671af39bfSAlexander V. Chernikov * 50771af39bfSAlexander V. Chernikov * Function may drop/reacquire UH wlock multiple times due to 50871af39bfSAlexander V. Chernikov * items alloc, algorithm callbacks (check_space), value linkage 50971af39bfSAlexander V. Chernikov * (new values, value storage realloc), etc.. 51071af39bfSAlexander V. Chernikov * Other processes like other adds (which may involve storage resize), 51171af39bfSAlexander V. Chernikov * table swaps (which changes table data and may change algo type), 51271af39bfSAlexander V. Chernikov * table modify (which may change value mask) may be executed 51371af39bfSAlexander V. Chernikov * simultaneously so we need to deal with it. 51471af39bfSAlexander V. Chernikov * 51571af39bfSAlexander V. Chernikov * The following approach was implemented: 51671af39bfSAlexander V. Chernikov * we have per-chain linked list, protected with UH lock. 51771af39bfSAlexander V. Chernikov * add_table_entry prepares special on-stack structure wthich is passed 51871af39bfSAlexander V. Chernikov * to its descendants. Users add this structure to this list before unlock. 51971af39bfSAlexander V. Chernikov * After performing needed operations and acquiring UH lock back, each user 52071af39bfSAlexander V. Chernikov * checks if structure has changed. If true, it rolls local state back and 52171af39bfSAlexander V. Chernikov * returns without error to the caller. 52271af39bfSAlexander V. Chernikov * add_table_entry() on its own checks if structure has changed and restarts 52371af39bfSAlexander V. Chernikov * its operation from the beginning (goto restart). 52471af39bfSAlexander V. Chernikov * 52571af39bfSAlexander V. Chernikov * Functions which are modifying fields of interest (currently 52671af39bfSAlexander V. Chernikov * resize_shared_value_storage() and swap_tables() ) 52771af39bfSAlexander V. Chernikov * traverses given list while holding UH lock immediately before 52871af39bfSAlexander V. Chernikov * performing their operations calling function provided be list entry 52971af39bfSAlexander V. Chernikov * ( currently rollback_add_entry ) which performs rollback for all necessary 53071af39bfSAlexander V. Chernikov * state and sets appropriate values in structure indicating rollback 53171af39bfSAlexander V. Chernikov * has happened. 53271af39bfSAlexander V. Chernikov * 53371af39bfSAlexander V. Chernikov * Algo interaction: 5340468c5baSAlexander V. Chernikov * Function references @ti first to ensure table won't 5350468c5baSAlexander V. Chernikov * disappear or change its type. 5360468c5baSAlexander V. Chernikov * After that, prepare_add callback is called for each @tei entry. 5370468c5baSAlexander V. Chernikov * Next, we try to add each entry under UH+WHLOCK 5380468c5baSAlexander V. Chernikov * using add() callback. 5390468c5baSAlexander V. Chernikov * Finally, we free all state by calling flush_entry callback 5400468c5baSAlexander V. Chernikov * for each @tei. 5411bc0d457SAlexander V. Chernikov * 5421bc0d457SAlexander V. Chernikov * Returns 0 on success. 5431bc0d457SAlexander V. Chernikov */ 5441bc0d457SAlexander V. Chernikov int 5451bc0d457SAlexander V. Chernikov add_table_entry(struct ip_fw_chain *ch, struct tid_info *ti, 5461bc0d457SAlexander V. Chernikov struct tentry_info *tei, uint8_t flags, uint32_t count) 5471bc0d457SAlexander V. Chernikov { 5481bc0d457SAlexander V. Chernikov struct table_config *tc; 5491bc0d457SAlexander V. Chernikov struct table_algo *ta; 5501bc0d457SAlexander V. Chernikov uint16_t kidx; 5511bc0d457SAlexander V. Chernikov int error, first_error, i, rollback; 5521bc0d457SAlexander V. Chernikov uint32_t num, numadd; 5531bc0d457SAlexander V. Chernikov struct tentry_info *ptei; 5540cba2b28SAlexander V. Chernikov struct tableop_state ts; 5551bc0d457SAlexander V. Chernikov char ta_buf[TA_BUF_SZ]; 5561bc0d457SAlexander V. Chernikov caddr_t ta_buf_m, v; 5571bc0d457SAlexander V. Chernikov 5580cba2b28SAlexander V. Chernikov memset(&ts, 0, sizeof(ts)); 559d4e1b515SAlexander V. Chernikov ta = NULL; 5600cba2b28SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 5610cba2b28SAlexander V. Chernikov 5621bc0d457SAlexander V. Chernikov /* 5631bc0d457SAlexander V. Chernikov * Find and reference existing table. 5641bc0d457SAlexander V. Chernikov */ 5650cba2b28SAlexander V. Chernikov restart: 5660cba2b28SAlexander V. Chernikov if (ts.modified != 0) { 5678ebca97fSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 5680cba2b28SAlexander V. Chernikov flush_batch_buffer(ch, ta, tei, count, rollback, 5690cba2b28SAlexander V. Chernikov ta_buf_m, ta_buf); 5700cba2b28SAlexander V. Chernikov memset(&ts, 0, sizeof(ts)); 5718ebca97fSAlexander V. Chernikov ta = NULL; 5728ebca97fSAlexander V. Chernikov IPFW_UH_WLOCK(ch); 5730cba2b28SAlexander V. Chernikov } 5748ebca97fSAlexander V. Chernikov 575867708f7SAlexander V. Chernikov error = find_ref_table(ch, ti, tei, count, OP_ADD, &tc); 576867708f7SAlexander V. Chernikov if (error != 0) { 577867708f7SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 5781bc0d457SAlexander V. Chernikov return (error); 579867708f7SAlexander V. Chernikov } 580867708f7SAlexander V. Chernikov ta = tc->ta; 581fb4b37a3SAlexander V. Chernikov 582fb4b37a3SAlexander V. Chernikov /* Fill in tablestate */ 5830cba2b28SAlexander V. Chernikov ts.ch = ch; 58471af39bfSAlexander V. Chernikov ts.opstate.func = rollback_add_entry; 5850cba2b28SAlexander V. Chernikov ts.tc = tc; 5860cba2b28SAlexander V. Chernikov ts.vshared = tc->vshared; 5870cba2b28SAlexander V. Chernikov ts.vmask = tc->vmask; 5880cba2b28SAlexander V. Chernikov ts.ta = ta; 5890cba2b28SAlexander V. Chernikov ts.tei = tei; 5900cba2b28SAlexander V. Chernikov ts.count = count; 5910cba2b28SAlexander V. Chernikov rollback = 0; 5920cba2b28SAlexander V. Chernikov add_toperation_state(ch, &ts); 593867708f7SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 5941bc0d457SAlexander V. Chernikov 5951bc0d457SAlexander V. Chernikov /* Allocate memory and prepare record(s) */ 5961bc0d457SAlexander V. Chernikov /* Pass stack buffer by default */ 5971bc0d457SAlexander V. Chernikov ta_buf_m = ta_buf; 5984dff4ae0SAlexander V. Chernikov error = prepare_batch_buffer(ch, ta, tei, count, OP_ADD, &ta_buf_m); 5991bc0d457SAlexander V. Chernikov if (error != 0) 6001bc0d457SAlexander V. Chernikov goto cleanup; 6011bc0d457SAlexander V. Chernikov 602b074b7bbSAlexander V. Chernikov IPFW_UH_WLOCK(ch); 603c8d5d308SAlexander V. Chernikov /* Drop reference we've used in first search */ 604c8d5d308SAlexander V. Chernikov tc->no.refcnt--; 605c8d5d308SAlexander V. Chernikov 606b6ee846eSAlexander V. Chernikov /* 6070cba2b28SAlexander V. Chernikov * Check if table swap has happened. 6080cba2b28SAlexander V. Chernikov * (so table algo might be changed). 6090cba2b28SAlexander V. Chernikov * Restart operation to achieve consistent behavior. 610b6ee846eSAlexander V. Chernikov */ 6110cba2b28SAlexander V. Chernikov del_toperation_state(ch, &ts); 6120cba2b28SAlexander V. Chernikov if (ts.modified != 0) 6130cba2b28SAlexander V. Chernikov goto restart; 614b6ee846eSAlexander V. Chernikov 615c8d5d308SAlexander V. Chernikov /* 6160cba2b28SAlexander V. Chernikov * Link all values values to shared/per-table value array. 6170cba2b28SAlexander V. Chernikov * 6180cba2b28SAlexander V. Chernikov * May release/reacquire UH_WLOCK. 619c8d5d308SAlexander V. Chernikov */ 6200cba2b28SAlexander V. Chernikov error = ipfw_link_table_values(ch, &ts); 6210cba2b28SAlexander V. Chernikov if (error != 0) 622c8d5d308SAlexander V. Chernikov goto cleanup; 6230cba2b28SAlexander V. Chernikov if (ts.modified != 0) 6240cba2b28SAlexander V. Chernikov goto restart; 6250cba2b28SAlexander V. Chernikov 6260cba2b28SAlexander V. Chernikov /* 6270cba2b28SAlexander V. Chernikov * Ensure we are able to add all entries without additional 6280cba2b28SAlexander V. Chernikov * memory allocations. May release/reacquire UH_WLOCK. 6290cba2b28SAlexander V. Chernikov */ 6300cba2b28SAlexander V. Chernikov kidx = tc->no.kidx; 6310cba2b28SAlexander V. Chernikov error = check_table_space(ch, &ts, tc, KIDX_TO_TI(ch, kidx), count); 6320cba2b28SAlexander V. Chernikov if (error != 0) 6330cba2b28SAlexander V. Chernikov goto cleanup; 6340cba2b28SAlexander V. Chernikov if (ts.modified != 0) 6350cba2b28SAlexander V. Chernikov goto restart; 636c8d5d308SAlexander V. Chernikov 6373a845e10SAlexander V. Chernikov /* We've got valid table in @tc. Let's try to add data */ 6389f7d47b0SAlexander V. Chernikov kidx = tc->no.kidx; 6399f7d47b0SAlexander V. Chernikov ta = tc->ta; 6403a845e10SAlexander V. Chernikov numadd = 0; 6413a845e10SAlexander V. Chernikov first_error = 0; 6429f7d47b0SAlexander V. Chernikov 643b074b7bbSAlexander V. Chernikov IPFW_WLOCK(ch); 6443a845e10SAlexander V. Chernikov 6453a845e10SAlexander V. Chernikov v = ta_buf_m; 6461bc0d457SAlexander V. Chernikov for (i = 0; i < count; i++, v += ta->ta_buf_size) { 6473a845e10SAlexander V. Chernikov ptei = &tei[i]; 6483a845e10SAlexander V. Chernikov num = 0; 6493a845e10SAlexander V. Chernikov /* check limit before adding */ 6503a845e10SAlexander V. Chernikov if ((error = check_table_limit(tc, ptei)) == 0) { 6513a845e10SAlexander V. Chernikov error = ta->add(tc->astate, KIDX_TO_TI(ch, kidx), 6523a845e10SAlexander V. Chernikov ptei, v, &num); 6533a845e10SAlexander V. Chernikov /* Set status flag to inform userland */ 654867708f7SAlexander V. Chernikov store_tei_result(ptei, OP_ADD, error, num); 6553a845e10SAlexander V. Chernikov } 6563a845e10SAlexander V. Chernikov if (error == 0) { 6573a845e10SAlexander V. Chernikov /* Update number of records to ease limit checking */ 6583a845e10SAlexander V. Chernikov tc->count += num; 6593a845e10SAlexander V. Chernikov numadd += num; 6603a845e10SAlexander V. Chernikov continue; 6613a845e10SAlexander V. Chernikov } 6623a845e10SAlexander V. Chernikov 6633a845e10SAlexander V. Chernikov if (first_error == 0) 6643a845e10SAlexander V. Chernikov first_error = error; 6653a845e10SAlexander V. Chernikov 6663a845e10SAlexander V. Chernikov /* 6673a845e10SAlexander V. Chernikov * Some error have happened. Check our atomicity 6683a845e10SAlexander V. Chernikov * settings: continue if atomicity is not required, 6693a845e10SAlexander V. Chernikov * rollback changes otherwise. 6703a845e10SAlexander V. Chernikov */ 6713a845e10SAlexander V. Chernikov if ((flags & IPFW_CTF_ATOMIC) == 0) 6723a845e10SAlexander V. Chernikov continue; 6733a845e10SAlexander V. Chernikov 6741bc0d457SAlexander V. Chernikov rollback_added_entries(ch, tc, KIDX_TO_TI(ch, kidx), 6751bc0d457SAlexander V. Chernikov tei, ta_buf_m, count, i); 6760cba2b28SAlexander V. Chernikov 6770cba2b28SAlexander V. Chernikov rollback = 1; 6783a845e10SAlexander V. Chernikov break; 6793a845e10SAlexander V. Chernikov } 6803a845e10SAlexander V. Chernikov 6813b3a8eb9SGleb Smirnoff IPFW_WUNLOCK(ch); 6829f7d47b0SAlexander V. Chernikov 68371af39bfSAlexander V. Chernikov ipfw_garbage_table_values(ch, tc, tei, count, rollback); 6840cba2b28SAlexander V. Chernikov 685b6ee846eSAlexander V. Chernikov /* Permit post-add algorithm grow/rehash. */ 6863a845e10SAlexander V. Chernikov if (numadd != 0) 6870cba2b28SAlexander V. Chernikov check_table_space(ch, NULL, tc, KIDX_TO_TI(ch, kidx), 0); 688b074b7bbSAlexander V. Chernikov 6893a845e10SAlexander V. Chernikov /* Return first error to user, if any */ 6903a845e10SAlexander V. Chernikov error = first_error; 6913a845e10SAlexander V. Chernikov 6923a845e10SAlexander V. Chernikov cleanup: 6930cba2b28SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 6940cba2b28SAlexander V. Chernikov 695867708f7SAlexander V. Chernikov flush_batch_buffer(ch, ta, tei, count, rollback, ta_buf_m, ta_buf); 696b074b7bbSAlexander V. Chernikov 6979f7d47b0SAlexander V. Chernikov return (error); 6983b3a8eb9SGleb Smirnoff } 6993b3a8eb9SGleb Smirnoff 7003a845e10SAlexander V. Chernikov /* 7013a845e10SAlexander V. Chernikov * Deletes one or more entries in table @ti. 7023a845e10SAlexander V. Chernikov * 7033a845e10SAlexander V. Chernikov * Returns 0 on success. 7043a845e10SAlexander V. Chernikov */ 7053b3a8eb9SGleb Smirnoff int 7061832a7b3SAlexander V. Chernikov del_table_entry(struct ip_fw_chain *ch, struct tid_info *ti, 7073a845e10SAlexander V. Chernikov struct tentry_info *tei, uint8_t flags, uint32_t count) 7083b3a8eb9SGleb Smirnoff { 709b074b7bbSAlexander V. Chernikov struct table_config *tc; 7109f7d47b0SAlexander V. Chernikov struct table_algo *ta; 7113a845e10SAlexander V. Chernikov struct tentry_info *ptei; 712b074b7bbSAlexander V. Chernikov uint16_t kidx; 7133a845e10SAlexander V. Chernikov int error, first_error, i; 7143a845e10SAlexander V. Chernikov uint32_t num, numdel; 715b6ee846eSAlexander V. Chernikov char ta_buf[TA_BUF_SZ]; 7163a845e10SAlexander V. Chernikov caddr_t ta_buf_m, v; 7173b3a8eb9SGleb Smirnoff 718db785d31SAlexander V. Chernikov /* 7191bc0d457SAlexander V. Chernikov * Find and reference existing table. 720db785d31SAlexander V. Chernikov */ 721867708f7SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 722867708f7SAlexander V. Chernikov error = find_ref_table(ch, ti, tei, count, OP_DEL, &tc); 723867708f7SAlexander V. Chernikov if (error != 0) { 724867708f7SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 725db785d31SAlexander V. Chernikov return (error); 726867708f7SAlexander V. Chernikov } 727867708f7SAlexander V. Chernikov ta = tc->ta; 728867708f7SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 7293a845e10SAlexander V. Chernikov 73035e1bbd0SAlexander V. Chernikov /* Allocate memory and prepare record(s) */ 7311bc0d457SAlexander V. Chernikov /* Pass stack buffer by default */ 7323a845e10SAlexander V. Chernikov ta_buf_m = ta_buf; 7334dff4ae0SAlexander V. Chernikov error = prepare_batch_buffer(ch, ta, tei, count, OP_DEL, &ta_buf_m); 7343a845e10SAlexander V. Chernikov if (error != 0) 7353a845e10SAlexander V. Chernikov goto cleanup; 7369f7d47b0SAlexander V. Chernikov 7373a845e10SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 7383a845e10SAlexander V. Chernikov 7393a845e10SAlexander V. Chernikov /* Drop reference we've used in first search */ 7403a845e10SAlexander V. Chernikov tc->no.refcnt--; 7413a845e10SAlexander V. Chernikov 742c8d5d308SAlexander V. Chernikov /* 743c8d5d308SAlexander V. Chernikov * Check if table algo is still the same. 744c8d5d308SAlexander V. Chernikov * (changed ta may be the result of table swap). 745c8d5d308SAlexander V. Chernikov */ 746c8d5d308SAlexander V. Chernikov if (ta != tc->ta) { 747c8d5d308SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 748c8d5d308SAlexander V. Chernikov error = EINVAL; 749c8d5d308SAlexander V. Chernikov goto cleanup; 750c8d5d308SAlexander V. Chernikov } 751c8d5d308SAlexander V. Chernikov 752b074b7bbSAlexander V. Chernikov kidx = tc->no.kidx; 7533a845e10SAlexander V. Chernikov numdel = 0; 7543a845e10SAlexander V. Chernikov first_error = 0; 755b074b7bbSAlexander V. Chernikov 756b074b7bbSAlexander V. Chernikov IPFW_WLOCK(ch); 7573a845e10SAlexander V. Chernikov v = ta_buf_m; 7581bc0d457SAlexander V. Chernikov for (i = 0; i < count; i++, v += ta->ta_buf_size) { 7593a845e10SAlexander V. Chernikov ptei = &tei[i]; 7603a845e10SAlexander V. Chernikov num = 0; 7613a845e10SAlexander V. Chernikov error = ta->del(tc->astate, KIDX_TO_TI(ch, kidx), ptei, v, 7623a845e10SAlexander V. Chernikov &num); 7633a845e10SAlexander V. Chernikov /* Save state for userland */ 764867708f7SAlexander V. Chernikov store_tei_result(ptei, OP_DEL, error, num); 7653a845e10SAlexander V. Chernikov if (error != 0 && first_error == 0) 7663a845e10SAlexander V. Chernikov first_error = error; 7673a845e10SAlexander V. Chernikov tc->count -= num; 7683a845e10SAlexander V. Chernikov numdel += num; 7693a845e10SAlexander V. Chernikov } 7703b3a8eb9SGleb Smirnoff IPFW_WUNLOCK(ch); 7713b3a8eb9SGleb Smirnoff 7720cba2b28SAlexander V. Chernikov /* Unlink non-used values */ 77371af39bfSAlexander V. Chernikov ipfw_garbage_table_values(ch, tc, tei, count, 0); 7740cba2b28SAlexander V. Chernikov 7753a845e10SAlexander V. Chernikov if (numdel != 0) { 776b6ee846eSAlexander V. Chernikov /* Run post-del hook to permit shrinking */ 7770cba2b28SAlexander V. Chernikov check_table_space(ch, NULL, tc, KIDX_TO_TI(ch, kidx), 0); 778b6ee846eSAlexander V. Chernikov } 779b074b7bbSAlexander V. Chernikov 7809f7d47b0SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 7813b3a8eb9SGleb Smirnoff 7823a845e10SAlexander V. Chernikov /* Return first error to user, if any */ 7833a845e10SAlexander V. Chernikov error = first_error; 7843a845e10SAlexander V. Chernikov 7853a845e10SAlexander V. Chernikov cleanup: 786867708f7SAlexander V. Chernikov flush_batch_buffer(ch, ta, tei, count, 0, ta_buf_m, ta_buf); 787ac35ff17SAlexander V. Chernikov 788ac35ff17SAlexander V. Chernikov return (error); 789ac35ff17SAlexander V. Chernikov } 790ac35ff17SAlexander V. Chernikov 791db785d31SAlexander V. Chernikov /* 792b6ee846eSAlexander V. Chernikov * Ensure that table @tc has enough space to add @count entries without 793b6ee846eSAlexander V. Chernikov * need for reallocation. 794db785d31SAlexander V. Chernikov * 795db785d31SAlexander V. Chernikov * Callbacks order: 796301290bcSAlexander V. Chernikov * 0) need_modify() (UH_WLOCK) - checks if @count items can be added w/o resize. 797b6ee846eSAlexander V. Chernikov * 798db785d31SAlexander V. Chernikov * 1) alloc_modify (no locks, M_WAITOK) - alloc new state based on @pflags. 799db785d31SAlexander V. Chernikov * 2) prepare_modifyt (UH_WLOCK) - copy old data into new storage 800db785d31SAlexander V. Chernikov * 3) modify (UH_WLOCK + WLOCK) - switch pointers 801b6ee846eSAlexander V. Chernikov * 4) flush_modify (UH_WLOCK) - free state, if needed 802b6ee846eSAlexander V. Chernikov * 803b6ee846eSAlexander V. Chernikov * Returns 0 on success. 804db785d31SAlexander V. Chernikov */ 805db785d31SAlexander V. Chernikov static int 8060cba2b28SAlexander V. Chernikov check_table_space(struct ip_fw_chain *ch, struct tableop_state *ts, 8070cba2b28SAlexander V. Chernikov struct table_config *tc, struct table_info *ti, uint32_t count) 808db785d31SAlexander V. Chernikov { 809b6ee846eSAlexander V. Chernikov struct table_algo *ta; 810b6ee846eSAlexander V. Chernikov uint64_t pflags; 811b6ee846eSAlexander V. Chernikov char ta_buf[TA_BUF_SZ]; 812db785d31SAlexander V. Chernikov int error; 813db785d31SAlexander V. Chernikov 814b6ee846eSAlexander V. Chernikov IPFW_UH_WLOCK_ASSERT(ch); 815db785d31SAlexander V. Chernikov 816b6ee846eSAlexander V. Chernikov error = 0; 817b6ee846eSAlexander V. Chernikov ta = tc->ta; 818fd0869d5SAlexander V. Chernikov if (ta->need_modify == NULL) 819fd0869d5SAlexander V. Chernikov return (0); 820fd0869d5SAlexander V. Chernikov 821b6ee846eSAlexander V. Chernikov /* Acquire reference not to loose @tc between locks/unlocks */ 822b6ee846eSAlexander V. Chernikov tc->no.refcnt++; 823db785d31SAlexander V. Chernikov 824db785d31SAlexander V. Chernikov /* 825b6ee846eSAlexander V. Chernikov * TODO: think about avoiding race between large add/large delete 826b6ee846eSAlexander V. Chernikov * operation on algorithm which implements shrinking along with 827b6ee846eSAlexander V. Chernikov * growing. 828db785d31SAlexander V. Chernikov */ 829b6ee846eSAlexander V. Chernikov while (true) { 830b6ee846eSAlexander V. Chernikov pflags = 0; 831301290bcSAlexander V. Chernikov if (ta->need_modify(tc->astate, ti, count, &pflags) == 0) { 83235e1bbd0SAlexander V. Chernikov error = 0; 83335e1bbd0SAlexander V. Chernikov break; 834b6ee846eSAlexander V. Chernikov } 835db785d31SAlexander V. Chernikov 836b6ee846eSAlexander V. Chernikov /* We have to shrink/grow table */ 8370cba2b28SAlexander V. Chernikov if (ts != NULL) 8380cba2b28SAlexander V. Chernikov add_toperation_state(ch, ts); 839b6ee846eSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 840b6ee846eSAlexander V. Chernikov 841301290bcSAlexander V. Chernikov memset(&ta_buf, 0, sizeof(ta_buf)); 8420cba2b28SAlexander V. Chernikov error = ta->prepare_mod(ta_buf, &pflags); 843b6ee846eSAlexander V. Chernikov 844b6ee846eSAlexander V. Chernikov IPFW_UH_WLOCK(ch); 8450cba2b28SAlexander V. Chernikov if (ts != NULL) 8460cba2b28SAlexander V. Chernikov del_toperation_state(ch, ts); 8470cba2b28SAlexander V. Chernikov 8480cba2b28SAlexander V. Chernikov if (error != 0) 8490cba2b28SAlexander V. Chernikov break; 8500cba2b28SAlexander V. Chernikov 8510cba2b28SAlexander V. Chernikov if (ts != NULL && ts->modified != 0) { 8520cba2b28SAlexander V. Chernikov 8530cba2b28SAlexander V. Chernikov /* 8540cba2b28SAlexander V. Chernikov * Swap operation has happened 8550cba2b28SAlexander V. Chernikov * so we're currently operating on other 8560cba2b28SAlexander V. Chernikov * table data. Stop doing this. 8570cba2b28SAlexander V. Chernikov */ 8580cba2b28SAlexander V. Chernikov ta->flush_mod(ta_buf); 8590cba2b28SAlexander V. Chernikov break; 8600cba2b28SAlexander V. Chernikov } 861b6ee846eSAlexander V. Chernikov 862b6ee846eSAlexander V. Chernikov /* Check if we still need to alter table */ 863b6ee846eSAlexander V. Chernikov ti = KIDX_TO_TI(ch, tc->no.kidx); 864301290bcSAlexander V. Chernikov if (ta->need_modify(tc->astate, ti, count, &pflags) == 0) { 865301290bcSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 866b6ee846eSAlexander V. Chernikov 867b6ee846eSAlexander V. Chernikov /* 86835e1bbd0SAlexander V. Chernikov * Other thread has already performed resize. 86935e1bbd0SAlexander V. Chernikov * Flush our state and return. 870b6ee846eSAlexander V. Chernikov */ 871b6ee846eSAlexander V. Chernikov ta->flush_mod(ta_buf); 872b6ee846eSAlexander V. Chernikov break; 873b6ee846eSAlexander V. Chernikov } 874b6ee846eSAlexander V. Chernikov 875b6ee846eSAlexander V. Chernikov error = ta->fill_mod(tc->astate, ti, ta_buf, &pflags); 876b6ee846eSAlexander V. Chernikov if (error == 0) { 877db785d31SAlexander V. Chernikov /* Do actual modification */ 878db785d31SAlexander V. Chernikov IPFW_WLOCK(ch); 87968394ec8SAlexander V. Chernikov ta->modify(tc->astate, ti, ta_buf, pflags); 880db785d31SAlexander V. Chernikov IPFW_WUNLOCK(ch); 881db785d31SAlexander V. Chernikov } 882db785d31SAlexander V. Chernikov 883b6ee846eSAlexander V. Chernikov /* Anyway, flush data and retry */ 884db785d31SAlexander V. Chernikov ta->flush_mod(ta_buf); 885b6ee846eSAlexander V. Chernikov } 886db785d31SAlexander V. Chernikov 887b6ee846eSAlexander V. Chernikov tc->no.refcnt--; 888db785d31SAlexander V. Chernikov return (error); 889db785d31SAlexander V. Chernikov } 890db785d31SAlexander V. Chernikov 8913a845e10SAlexander V. Chernikov /* 892ac35ff17SAlexander V. Chernikov * Adds or deletes record in table. 893ac35ff17SAlexander V. Chernikov * Data layout (v0): 894ac35ff17SAlexander V. Chernikov * Request: [ ip_fw3_opheader ipfw_table_xentry ] 895ac35ff17SAlexander V. Chernikov * 896ac35ff17SAlexander V. Chernikov * Returns 0 on success 897ac35ff17SAlexander V. Chernikov */ 898ac35ff17SAlexander V. Chernikov static int 8996b988f3aSAlexander V. Chernikov manage_table_ent_v0(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 900ac35ff17SAlexander V. Chernikov struct sockopt_data *sd) 901ac35ff17SAlexander V. Chernikov { 902ac35ff17SAlexander V. Chernikov ipfw_table_xentry *xent; 903ac35ff17SAlexander V. Chernikov struct tentry_info tei; 904ac35ff17SAlexander V. Chernikov struct tid_info ti; 9050cba2b28SAlexander V. Chernikov struct table_value v; 906ac35ff17SAlexander V. Chernikov int error, hdrlen, read; 907ac35ff17SAlexander V. Chernikov 908ac35ff17SAlexander V. Chernikov hdrlen = offsetof(ipfw_table_xentry, k); 909ac35ff17SAlexander V. Chernikov 910ac35ff17SAlexander V. Chernikov /* Check minimum header size */ 911ac35ff17SAlexander V. Chernikov if (sd->valsize < (sizeof(*op3) + hdrlen)) 912ac35ff17SAlexander V. Chernikov return (EINVAL); 913ac35ff17SAlexander V. Chernikov 914ac35ff17SAlexander V. Chernikov read = sizeof(ip_fw3_opheader); 915ac35ff17SAlexander V. Chernikov 916ac35ff17SAlexander V. Chernikov /* Check if xentry len field is valid */ 917ac35ff17SAlexander V. Chernikov xent = (ipfw_table_xentry *)(op3 + 1); 918ac35ff17SAlexander V. Chernikov if (xent->len < hdrlen || xent->len + read > sd->valsize) 919ac35ff17SAlexander V. Chernikov return (EINVAL); 920ac35ff17SAlexander V. Chernikov 921ac35ff17SAlexander V. Chernikov memset(&tei, 0, sizeof(tei)); 922ac35ff17SAlexander V. Chernikov tei.paddr = &xent->k; 923ac35ff17SAlexander V. Chernikov tei.masklen = xent->masklen; 9240cba2b28SAlexander V. Chernikov ipfw_import_table_value_legacy(xent->value, &v); 9250cba2b28SAlexander V. Chernikov tei.pvalue = &v; 926ac35ff17SAlexander V. Chernikov /* Old requests compability */ 927db785d31SAlexander V. Chernikov tei.flags = TEI_FLAGS_COMPAT; 928c21034b7SAlexander V. Chernikov if (xent->type == IPFW_TABLE_ADDR) { 929ac35ff17SAlexander V. Chernikov if (xent->len - hdrlen == sizeof(in_addr_t)) 930ac35ff17SAlexander V. Chernikov tei.subtype = AF_INET; 931ac35ff17SAlexander V. Chernikov else 932ac35ff17SAlexander V. Chernikov tei.subtype = AF_INET6; 933ac35ff17SAlexander V. Chernikov } 934ac35ff17SAlexander V. Chernikov 935ac35ff17SAlexander V. Chernikov memset(&ti, 0, sizeof(ti)); 936ac35ff17SAlexander V. Chernikov ti.uidx = xent->tbl; 937ac35ff17SAlexander V. Chernikov ti.type = xent->type; 938ac35ff17SAlexander V. Chernikov 939ac35ff17SAlexander V. Chernikov error = (op3->opcode == IP_FW_TABLE_XADD) ? 9403a845e10SAlexander V. Chernikov add_table_entry(ch, &ti, &tei, 0, 1) : 9413a845e10SAlexander V. Chernikov del_table_entry(ch, &ti, &tei, 0, 1); 942ac35ff17SAlexander V. Chernikov 943ac35ff17SAlexander V. Chernikov return (error); 944ac35ff17SAlexander V. Chernikov } 945ac35ff17SAlexander V. Chernikov 946ac35ff17SAlexander V. Chernikov /* 947ac35ff17SAlexander V. Chernikov * Adds or deletes record in table. 948ac35ff17SAlexander V. Chernikov * Data layout (v1)(current): 949db785d31SAlexander V. Chernikov * Request: [ ipfw_obj_header 950db785d31SAlexander V. Chernikov * ipfw_obj_ctlv(IPFW_TLV_TBLENT_LIST) [ ipfw_obj_tentry x N ] 951db785d31SAlexander V. Chernikov * ] 952ac35ff17SAlexander V. Chernikov * 953ac35ff17SAlexander V. Chernikov * Returns 0 on success 954ac35ff17SAlexander V. Chernikov */ 955ac35ff17SAlexander V. Chernikov static int 9566b988f3aSAlexander V. Chernikov manage_table_ent_v1(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 957ac35ff17SAlexander V. Chernikov struct sockopt_data *sd) 958ac35ff17SAlexander V. Chernikov { 9593a845e10SAlexander V. Chernikov ipfw_obj_tentry *tent, *ptent; 960db785d31SAlexander V. Chernikov ipfw_obj_ctlv *ctlv; 961ac35ff17SAlexander V. Chernikov ipfw_obj_header *oh; 9623a845e10SAlexander V. Chernikov struct tentry_info *ptei, tei, *tei_buf; 963ac35ff17SAlexander V. Chernikov struct tid_info ti; 9643a845e10SAlexander V. Chernikov int error, i, kidx, read; 965ac35ff17SAlexander V. Chernikov 966ac35ff17SAlexander V. Chernikov /* Check minimum header size */ 967db785d31SAlexander V. Chernikov if (sd->valsize < (sizeof(*oh) + sizeof(*ctlv))) 968ac35ff17SAlexander V. Chernikov return (EINVAL); 969ac35ff17SAlexander V. Chernikov 970ac35ff17SAlexander V. Chernikov /* Check if passed data is too long */ 971ac35ff17SAlexander V. Chernikov if (sd->valsize != sd->kavail) 972ac35ff17SAlexander V. Chernikov return (EINVAL); 973ac35ff17SAlexander V. Chernikov 974ac35ff17SAlexander V. Chernikov oh = (ipfw_obj_header *)sd->kbuf; 975ac35ff17SAlexander V. Chernikov 976ac35ff17SAlexander V. Chernikov /* Basic length checks for TLVs */ 977ac35ff17SAlexander V. Chernikov if (oh->ntlv.head.length != sizeof(oh->ntlv)) 978ac35ff17SAlexander V. Chernikov return (EINVAL); 979ac35ff17SAlexander V. Chernikov 980ac35ff17SAlexander V. Chernikov read = sizeof(*oh); 981ac35ff17SAlexander V. Chernikov 982db785d31SAlexander V. Chernikov ctlv = (ipfw_obj_ctlv *)(oh + 1); 983db785d31SAlexander V. Chernikov if (ctlv->head.length + read != sd->valsize) 984db785d31SAlexander V. Chernikov return (EINVAL); 985db785d31SAlexander V. Chernikov 986db785d31SAlexander V. Chernikov read += sizeof(*ctlv); 987db785d31SAlexander V. Chernikov tent = (ipfw_obj_tentry *)(ctlv + 1); 9883a845e10SAlexander V. Chernikov if (ctlv->count * sizeof(*tent) + read != sd->valsize) 989ac35ff17SAlexander V. Chernikov return (EINVAL); 990ac35ff17SAlexander V. Chernikov 9913a845e10SAlexander V. Chernikov if (ctlv->count == 0) 9923a845e10SAlexander V. Chernikov return (0); 993ac35ff17SAlexander V. Chernikov 9943a845e10SAlexander V. Chernikov /* 9953a845e10SAlexander V. Chernikov * Mark entire buffer as "read". 99635e1bbd0SAlexander V. Chernikov * This instructs sopt api write it back 9973a845e10SAlexander V. Chernikov * after function return. 9983a845e10SAlexander V. Chernikov */ 9993a845e10SAlexander V. Chernikov ipfw_get_sopt_header(sd, sd->valsize); 10003a845e10SAlexander V. Chernikov 10013a845e10SAlexander V. Chernikov /* Perform basic checks for each entry */ 10023a845e10SAlexander V. Chernikov ptent = tent; 10033a845e10SAlexander V. Chernikov kidx = tent->idx; 10043a845e10SAlexander V. Chernikov for (i = 0; i < ctlv->count; i++, ptent++) { 10053a845e10SAlexander V. Chernikov if (ptent->head.length != sizeof(*ptent)) 10063a845e10SAlexander V. Chernikov return (EINVAL); 10073a845e10SAlexander V. Chernikov if (ptent->idx != kidx) 10083a845e10SAlexander V. Chernikov return (ENOTSUP); 10093a845e10SAlexander V. Chernikov } 10103a845e10SAlexander V. Chernikov 10113a845e10SAlexander V. Chernikov /* Convert data into kernel request objects */ 101281d3153dSAlexander V. Chernikov objheader_to_ti(oh, &ti); 1013ac35ff17SAlexander V. Chernikov ti.type = oh->ntlv.type; 10143a845e10SAlexander V. Chernikov ti.uidx = kidx; 10153a845e10SAlexander V. Chernikov 10163a845e10SAlexander V. Chernikov /* Use on-stack buffer for single add/del */ 10173a845e10SAlexander V. Chernikov if (ctlv->count == 1) { 10183a845e10SAlexander V. Chernikov memset(&tei, 0, sizeof(tei)); 10193a845e10SAlexander V. Chernikov tei_buf = &tei; 10203a845e10SAlexander V. Chernikov } else 10213a845e10SAlexander V. Chernikov tei_buf = malloc(ctlv->count * sizeof(tei), M_TEMP, 10223a845e10SAlexander V. Chernikov M_WAITOK | M_ZERO); 10233a845e10SAlexander V. Chernikov 10243a845e10SAlexander V. Chernikov ptei = tei_buf; 10253a845e10SAlexander V. Chernikov ptent = tent; 10263a845e10SAlexander V. Chernikov for (i = 0; i < ctlv->count; i++, ptent++, ptei++) { 10273a845e10SAlexander V. Chernikov ptei->paddr = &ptent->k; 10283a845e10SAlexander V. Chernikov ptei->subtype = ptent->subtype; 10293a845e10SAlexander V. Chernikov ptei->masklen = ptent->masklen; 10303a845e10SAlexander V. Chernikov if (ptent->head.flags & IPFW_TF_UPDATE) 10313a845e10SAlexander V. Chernikov ptei->flags |= TEI_FLAGS_UPDATE; 10320cba2b28SAlexander V. Chernikov 10330cba2b28SAlexander V. Chernikov ipfw_import_table_value_v1(&ptent->v.value); 10340cba2b28SAlexander V. Chernikov ptei->pvalue = (struct table_value *)&ptent->v.value; 10353a845e10SAlexander V. Chernikov } 1036ac35ff17SAlexander V. Chernikov 1037ac35ff17SAlexander V. Chernikov error = (oh->opheader.opcode == IP_FW_TABLE_XADD) ? 10383a845e10SAlexander V. Chernikov add_table_entry(ch, &ti, tei_buf, ctlv->flags, ctlv->count) : 10393a845e10SAlexander V. Chernikov del_table_entry(ch, &ti, tei_buf, ctlv->flags, ctlv->count); 10403a845e10SAlexander V. Chernikov 10413a845e10SAlexander V. Chernikov /* Translate result back to userland */ 10423a845e10SAlexander V. Chernikov ptei = tei_buf; 10433a845e10SAlexander V. Chernikov ptent = tent; 10443a845e10SAlexander V. Chernikov for (i = 0; i < ctlv->count; i++, ptent++, ptei++) { 10453a845e10SAlexander V. Chernikov if (ptei->flags & TEI_FLAGS_ADDED) 10463a845e10SAlexander V. Chernikov ptent->result = IPFW_TR_ADDED; 10473a845e10SAlexander V. Chernikov else if (ptei->flags & TEI_FLAGS_DELETED) 10483a845e10SAlexander V. Chernikov ptent->result = IPFW_TR_DELETED; 10493a845e10SAlexander V. Chernikov else if (ptei->flags & TEI_FLAGS_UPDATED) 10503a845e10SAlexander V. Chernikov ptent->result = IPFW_TR_UPDATED; 10513a845e10SAlexander V. Chernikov else if (ptei->flags & TEI_FLAGS_LIMIT) 10523a845e10SAlexander V. Chernikov ptent->result = IPFW_TR_LIMIT; 10533a845e10SAlexander V. Chernikov else if (ptei->flags & TEI_FLAGS_ERROR) 10543a845e10SAlexander V. Chernikov ptent->result = IPFW_TR_ERROR; 10553a845e10SAlexander V. Chernikov else if (ptei->flags & TEI_FLAGS_NOTFOUND) 10563a845e10SAlexander V. Chernikov ptent->result = IPFW_TR_NOTFOUND; 10573a845e10SAlexander V. Chernikov else if (ptei->flags & TEI_FLAGS_EXISTS) 10583a845e10SAlexander V. Chernikov ptent->result = IPFW_TR_EXISTS; 10590cba2b28SAlexander V. Chernikov ipfw_export_table_value_v1(ptei->pvalue, &ptent->v.value); 10603a845e10SAlexander V. Chernikov } 10613a845e10SAlexander V. Chernikov 10623a845e10SAlexander V. Chernikov if (tei_buf != &tei) 10633a845e10SAlexander V. Chernikov free(tei_buf, M_TEMP); 1064ac35ff17SAlexander V. Chernikov 1065ac35ff17SAlexander V. Chernikov return (error); 1066ac35ff17SAlexander V. Chernikov } 1067ac35ff17SAlexander V. Chernikov 106881d3153dSAlexander V. Chernikov /* 106981d3153dSAlexander V. Chernikov * Looks up an entry in given table. 107081d3153dSAlexander V. Chernikov * Data layout (v0)(current): 107181d3153dSAlexander V. Chernikov * Request: [ ipfw_obj_header ipfw_obj_tentry ] 107281d3153dSAlexander V. Chernikov * Reply: [ ipfw_obj_header ipfw_obj_tentry ] 107381d3153dSAlexander V. Chernikov * 107481d3153dSAlexander V. Chernikov * Returns 0 on success 107581d3153dSAlexander V. Chernikov */ 10766b988f3aSAlexander V. Chernikov static int 10776b988f3aSAlexander V. Chernikov find_table_entry(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 107881d3153dSAlexander V. Chernikov struct sockopt_data *sd) 107981d3153dSAlexander V. Chernikov { 108081d3153dSAlexander V. Chernikov ipfw_obj_tentry *tent; 108181d3153dSAlexander V. Chernikov ipfw_obj_header *oh; 108281d3153dSAlexander V. Chernikov struct tid_info ti; 108381d3153dSAlexander V. Chernikov struct table_config *tc; 108481d3153dSAlexander V. Chernikov struct table_algo *ta; 108581d3153dSAlexander V. Chernikov struct table_info *kti; 108681d3153dSAlexander V. Chernikov struct namedobj_instance *ni; 1087914bffb6SAlexander V. Chernikov int error; 108881d3153dSAlexander V. Chernikov size_t sz; 108981d3153dSAlexander V. Chernikov 109081d3153dSAlexander V. Chernikov /* Check minimum header size */ 109181d3153dSAlexander V. Chernikov sz = sizeof(*oh) + sizeof(*tent); 109281d3153dSAlexander V. Chernikov if (sd->valsize != sz) 109381d3153dSAlexander V. Chernikov return (EINVAL); 109481d3153dSAlexander V. Chernikov 109581d3153dSAlexander V. Chernikov oh = (struct _ipfw_obj_header *)ipfw_get_sopt_header(sd, sz); 109681d3153dSAlexander V. Chernikov tent = (ipfw_obj_tentry *)(oh + 1); 109781d3153dSAlexander V. Chernikov 109881d3153dSAlexander V. Chernikov /* Basic length checks for TLVs */ 109981d3153dSAlexander V. Chernikov if (oh->ntlv.head.length != sizeof(oh->ntlv)) 110081d3153dSAlexander V. Chernikov return (EINVAL); 110181d3153dSAlexander V. Chernikov 110281d3153dSAlexander V. Chernikov objheader_to_ti(oh, &ti); 110381d3153dSAlexander V. Chernikov ti.type = oh->ntlv.type; 110481d3153dSAlexander V. Chernikov ti.uidx = tent->idx; 110581d3153dSAlexander V. Chernikov 110681d3153dSAlexander V. Chernikov IPFW_UH_RLOCK(ch); 110781d3153dSAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 110881d3153dSAlexander V. Chernikov 110981d3153dSAlexander V. Chernikov /* 111081d3153dSAlexander V. Chernikov * Find existing table and check its type . 111181d3153dSAlexander V. Chernikov */ 111281d3153dSAlexander V. Chernikov ta = NULL; 111381d3153dSAlexander V. Chernikov if ((tc = find_table(ni, &ti)) == NULL) { 111481d3153dSAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 111581d3153dSAlexander V. Chernikov return (ESRCH); 111681d3153dSAlexander V. Chernikov } 111781d3153dSAlexander V. Chernikov 111881d3153dSAlexander V. Chernikov /* check table type */ 111981d3153dSAlexander V. Chernikov if (tc->no.type != ti.type) { 112081d3153dSAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 112181d3153dSAlexander V. Chernikov return (EINVAL); 112281d3153dSAlexander V. Chernikov } 112381d3153dSAlexander V. Chernikov 112481d3153dSAlexander V. Chernikov kti = KIDX_TO_TI(ch, tc->no.kidx); 112581d3153dSAlexander V. Chernikov ta = tc->ta; 112681d3153dSAlexander V. Chernikov 1127914bffb6SAlexander V. Chernikov if (ta->find_tentry == NULL) 1128914bffb6SAlexander V. Chernikov return (ENOTSUP); 1129914bffb6SAlexander V. Chernikov 1130914bffb6SAlexander V. Chernikov error = ta->find_tentry(tc->astate, kti, tent); 113181d3153dSAlexander V. Chernikov 113281d3153dSAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 113381d3153dSAlexander V. Chernikov 113481d3153dSAlexander V. Chernikov return (error); 113581d3153dSAlexander V. Chernikov } 113681d3153dSAlexander V. Chernikov 113746d52008SAlexander V. Chernikov /* 113846d52008SAlexander V. Chernikov * Flushes all entries or destroys given table. 113946d52008SAlexander V. Chernikov * Data layout (v0)(current): 114046d52008SAlexander V. Chernikov * Request: [ ipfw_obj_header ] 114146d52008SAlexander V. Chernikov * 114246d52008SAlexander V. Chernikov * Returns 0 on success 114346d52008SAlexander V. Chernikov */ 11446b988f3aSAlexander V. Chernikov static int 11456b988f3aSAlexander V. Chernikov flush_table_v0(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 1146ac35ff17SAlexander V. Chernikov struct sockopt_data *sd) 1147ac35ff17SAlexander V. Chernikov { 1148ac35ff17SAlexander V. Chernikov int error; 1149ac35ff17SAlexander V. Chernikov struct _ipfw_obj_header *oh; 1150ac35ff17SAlexander V. Chernikov struct tid_info ti; 1151ac35ff17SAlexander V. Chernikov 1152ac35ff17SAlexander V. Chernikov if (sd->valsize != sizeof(*oh)) 1153ac35ff17SAlexander V. Chernikov return (EINVAL); 1154ac35ff17SAlexander V. Chernikov 1155ac35ff17SAlexander V. Chernikov oh = (struct _ipfw_obj_header *)op3; 1156ac35ff17SAlexander V. Chernikov objheader_to_ti(oh, &ti); 1157ac35ff17SAlexander V. Chernikov 11581832a7b3SAlexander V. Chernikov if (op3->opcode == IP_FW_TABLE_XDESTROY) 1159ac35ff17SAlexander V. Chernikov error = destroy_table(ch, &ti); 11601832a7b3SAlexander V. Chernikov else if (op3->opcode == IP_FW_TABLE_XFLUSH) 1161ac35ff17SAlexander V. Chernikov error = flush_table(ch, &ti); 1162ac35ff17SAlexander V. Chernikov else 1163ac35ff17SAlexander V. Chernikov return (ENOTSUP); 1164ac35ff17SAlexander V. Chernikov 1165ac35ff17SAlexander V. Chernikov return (error); 11663b3a8eb9SGleb Smirnoff } 11673b3a8eb9SGleb Smirnoff 1168fb4b37a3SAlexander V. Chernikov static void 1169fb4b37a3SAlexander V. Chernikov restart_flush(void *object, struct op_state *_state) 1170fb4b37a3SAlexander V. Chernikov { 1171fb4b37a3SAlexander V. Chernikov struct tableop_state *ts; 1172fb4b37a3SAlexander V. Chernikov 1173fb4b37a3SAlexander V. Chernikov ts = (struct tableop_state *)_state; 1174fb4b37a3SAlexander V. Chernikov 1175fb4b37a3SAlexander V. Chernikov if (ts->tc != object) 1176fb4b37a3SAlexander V. Chernikov return; 1177fb4b37a3SAlexander V. Chernikov 1178fb4b37a3SAlexander V. Chernikov /* Indicate we've called */ 1179fb4b37a3SAlexander V. Chernikov ts->modified = 1; 1180fb4b37a3SAlexander V. Chernikov } 1181fb4b37a3SAlexander V. Chernikov 118235e1bbd0SAlexander V. Chernikov /* 118335e1bbd0SAlexander V. Chernikov * Flushes given table. 118435e1bbd0SAlexander V. Chernikov * 118535e1bbd0SAlexander V. Chernikov * Function create new table instance with the same 118635e1bbd0SAlexander V. Chernikov * parameters, swaps it with old one and 1187fb4b37a3SAlexander V. Chernikov * flushes state without holding runtime WLOCK. 118835e1bbd0SAlexander V. Chernikov * 118935e1bbd0SAlexander V. Chernikov * Returns 0 on success. 119035e1bbd0SAlexander V. Chernikov */ 11911832a7b3SAlexander V. Chernikov int 1192ac35ff17SAlexander V. Chernikov flush_table(struct ip_fw_chain *ch, struct tid_info *ti) 11933b3a8eb9SGleb Smirnoff { 1194b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 1195b074b7bbSAlexander V. Chernikov struct table_config *tc; 11969f7d47b0SAlexander V. Chernikov struct table_algo *ta; 11979f7d47b0SAlexander V. Chernikov struct table_info ti_old, ti_new, *tablestate; 11989f7d47b0SAlexander V. Chernikov void *astate_old, *astate_new; 1199914bffb6SAlexander V. Chernikov char algostate[64], *pstate; 1200fb4b37a3SAlexander V. Chernikov struct tableop_state ts; 12010caab009SAlexander V. Chernikov int error, need_gc; 1202b074b7bbSAlexander V. Chernikov uint16_t kidx; 1203914bffb6SAlexander V. Chernikov uint8_t tflags; 12043b3a8eb9SGleb Smirnoff 12053b3a8eb9SGleb Smirnoff /* 12069f7d47b0SAlexander V. Chernikov * Stage 1: save table algoritm. 1207b074b7bbSAlexander V. Chernikov * Reference found table to ensure it won't disappear. 12083b3a8eb9SGleb Smirnoff */ 1209b074b7bbSAlexander V. Chernikov IPFW_UH_WLOCK(ch); 1210b074b7bbSAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 1211b074b7bbSAlexander V. Chernikov if ((tc = find_table(ni, ti)) == NULL) { 1212b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1213b074b7bbSAlexander V. Chernikov return (ESRCH); 1214b074b7bbSAlexander V. Chernikov } 12150caab009SAlexander V. Chernikov need_gc = 0; 12160caab009SAlexander V. Chernikov astate_new = NULL; 12170caab009SAlexander V. Chernikov memset(&ti_new, 0, sizeof(ti_new)); 1218fb4b37a3SAlexander V. Chernikov restart: 1219fb4b37a3SAlexander V. Chernikov /* Set up swap handler */ 1220fb4b37a3SAlexander V. Chernikov memset(&ts, 0, sizeof(ts)); 1221fb4b37a3SAlexander V. Chernikov ts.opstate.func = restart_flush; 1222fb4b37a3SAlexander V. Chernikov ts.tc = tc; 1223fb4b37a3SAlexander V. Chernikov 12249f7d47b0SAlexander V. Chernikov ta = tc->ta; 1225fd0869d5SAlexander V. Chernikov /* Do not flush readonly tables */ 1226fd0869d5SAlexander V. Chernikov if ((ta->flags & TA_FLAG_READONLY) != 0) { 1227fd0869d5SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1228fd0869d5SAlexander V. Chernikov return (EACCES); 1229fd0869d5SAlexander V. Chernikov } 123035e1bbd0SAlexander V. Chernikov /* Save startup algo parameters */ 1231daabb523SAlexander V. Chernikov if (ta->print_config != NULL) { 1232daabb523SAlexander V. Chernikov ta->print_config(tc->astate, KIDX_TO_TI(ch, tc->no.kidx), 1233daabb523SAlexander V. Chernikov algostate, sizeof(algostate)); 1234daabb523SAlexander V. Chernikov pstate = algostate; 1235daabb523SAlexander V. Chernikov } else 1236daabb523SAlexander V. Chernikov pstate = NULL; 1237914bffb6SAlexander V. Chernikov tflags = tc->tflags; 1238fb4b37a3SAlexander V. Chernikov tc->no.refcnt++; 1239fb4b37a3SAlexander V. Chernikov add_toperation_state(ch, &ts); 1240b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 12413b3a8eb9SGleb Smirnoff 1242b074b7bbSAlexander V. Chernikov /* 12430caab009SAlexander V. Chernikov * Stage 1.5: if this is not the first attempt, destroy previous state 12440caab009SAlexander V. Chernikov */ 12450caab009SAlexander V. Chernikov if (need_gc != 0) { 12460caab009SAlexander V. Chernikov ta->destroy(astate_new, &ti_new); 12470caab009SAlexander V. Chernikov need_gc = 0; 12480caab009SAlexander V. Chernikov } 12490caab009SAlexander V. Chernikov 12500caab009SAlexander V. Chernikov /* 12519f7d47b0SAlexander V. Chernikov * Stage 2: allocate new table instance using same algo. 1252b074b7bbSAlexander V. Chernikov */ 12539f7d47b0SAlexander V. Chernikov memset(&ti_new, 0, sizeof(struct table_info)); 1254fb4b37a3SAlexander V. Chernikov error = ta->init(ch, &astate_new, &ti_new, pstate, tflags); 1255b074b7bbSAlexander V. Chernikov 1256b074b7bbSAlexander V. Chernikov /* 1257b074b7bbSAlexander V. Chernikov * Stage 3: swap old state pointers with newly-allocated ones. 1258b074b7bbSAlexander V. Chernikov * Decrease refcount. 1259b074b7bbSAlexander V. Chernikov */ 1260b074b7bbSAlexander V. Chernikov IPFW_UH_WLOCK(ch); 1261fb4b37a3SAlexander V. Chernikov tc->no.refcnt--; 1262fb4b37a3SAlexander V. Chernikov del_toperation_state(ch, &ts); 1263fb4b37a3SAlexander V. Chernikov 1264fb4b37a3SAlexander V. Chernikov if (error != 0) { 1265fb4b37a3SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1266fb4b37a3SAlexander V. Chernikov return (error); 1267fb4b37a3SAlexander V. Chernikov } 1268fb4b37a3SAlexander V. Chernikov 1269fb4b37a3SAlexander V. Chernikov /* 1270fb4b37a3SAlexander V. Chernikov * Restart operation if table swap has happened: 1271fb4b37a3SAlexander V. Chernikov * even if algo may be the same, algo init parameters 1272fb4b37a3SAlexander V. Chernikov * may change. Restart operation instead of doing 1273fb4b37a3SAlexander V. Chernikov * complex checks. 1274fb4b37a3SAlexander V. Chernikov */ 1275fb4b37a3SAlexander V. Chernikov if (ts.modified != 0) { 12760caab009SAlexander V. Chernikov /* Delay destroying data since we're holding UH lock */ 12770caab009SAlexander V. Chernikov need_gc = 1; 1278fb4b37a3SAlexander V. Chernikov goto restart; 1279fb4b37a3SAlexander V. Chernikov } 1280b074b7bbSAlexander V. Chernikov 1281b074b7bbSAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 1282b074b7bbSAlexander V. Chernikov kidx = tc->no.kidx; 12839f7d47b0SAlexander V. Chernikov tablestate = (struct table_info *)ch->tablestate; 1284b074b7bbSAlexander V. Chernikov 12859f7d47b0SAlexander V. Chernikov IPFW_WLOCK(ch); 12869f7d47b0SAlexander V. Chernikov ti_old = tablestate[kidx]; 12879f7d47b0SAlexander V. Chernikov tablestate[kidx] = ti_new; 12889f7d47b0SAlexander V. Chernikov IPFW_WUNLOCK(ch); 1289b074b7bbSAlexander V. Chernikov 12909f7d47b0SAlexander V. Chernikov astate_old = tc->astate; 12919f7d47b0SAlexander V. Chernikov tc->astate = astate_new; 12924c060d85SAlexander V. Chernikov tc->ti_copy = ti_new; 12939f7d47b0SAlexander V. Chernikov tc->count = 0; 1294b074b7bbSAlexander V. Chernikov 129579e86902SAlexander V. Chernikov /* Notify algo on real @ti address */ 129679e86902SAlexander V. Chernikov if (ta->change_ti != NULL) 129779e86902SAlexander V. Chernikov ta->change_ti(tc->astate, &tablestate[kidx]); 129879e86902SAlexander V. Chernikov 12990cba2b28SAlexander V. Chernikov /* 13000cba2b28SAlexander V. Chernikov * Stage 4: unref values. 13010cba2b28SAlexander V. Chernikov */ 13020cba2b28SAlexander V. Chernikov ipfw_unref_table_values(ch, tc, ta, astate_old, &ti_old); 1303b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 13043b3a8eb9SGleb Smirnoff 1305b074b7bbSAlexander V. Chernikov /* 13060cba2b28SAlexander V. Chernikov * Stage 5: perform real flush/destroy. 1307b074b7bbSAlexander V. Chernikov */ 13089f7d47b0SAlexander V. Chernikov ta->destroy(astate_old, &ti_old); 13093b3a8eb9SGleb Smirnoff 13103b3a8eb9SGleb Smirnoff return (0); 13113b3a8eb9SGleb Smirnoff } 13123b3a8eb9SGleb Smirnoff 1313b074b7bbSAlexander V. Chernikov /* 131446d52008SAlexander V. Chernikov * Swaps two tables. 131546d52008SAlexander V. Chernikov * Data layout (v0)(current): 131646d52008SAlexander V. Chernikov * Request: [ ipfw_obj_header ipfw_obj_ntlv ] 131746d52008SAlexander V. Chernikov * 131846d52008SAlexander V. Chernikov * Returns 0 on success 131946d52008SAlexander V. Chernikov */ 13206b988f3aSAlexander V. Chernikov static int 13216b988f3aSAlexander V. Chernikov swap_table(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 132246d52008SAlexander V. Chernikov struct sockopt_data *sd) 132346d52008SAlexander V. Chernikov { 132446d52008SAlexander V. Chernikov int error; 132546d52008SAlexander V. Chernikov struct _ipfw_obj_header *oh; 132646d52008SAlexander V. Chernikov struct tid_info ti_a, ti_b; 132746d52008SAlexander V. Chernikov 132846d52008SAlexander V. Chernikov if (sd->valsize != sizeof(*oh) + sizeof(ipfw_obj_ntlv)) 132946d52008SAlexander V. Chernikov return (EINVAL); 133046d52008SAlexander V. Chernikov 133146d52008SAlexander V. Chernikov oh = (struct _ipfw_obj_header *)op3; 133246d52008SAlexander V. Chernikov ntlv_to_ti(&oh->ntlv, &ti_a); 133346d52008SAlexander V. Chernikov ntlv_to_ti((ipfw_obj_ntlv *)(oh + 1), &ti_b); 133446d52008SAlexander V. Chernikov 1335a73d728dSAlexander V. Chernikov error = swap_tables(ch, &ti_a, &ti_b); 133646d52008SAlexander V. Chernikov 133746d52008SAlexander V. Chernikov return (error); 133846d52008SAlexander V. Chernikov } 133946d52008SAlexander V. Chernikov 134035e1bbd0SAlexander V. Chernikov /* 134135e1bbd0SAlexander V. Chernikov * Swaps two tables of the same type/valtype. 134235e1bbd0SAlexander V. Chernikov * 134335e1bbd0SAlexander V. Chernikov * Checks if tables are compatible and limits 1344c8d5d308SAlexander V. Chernikov * permits swap, than actually perform swap. 134535e1bbd0SAlexander V. Chernikov * 1346c8d5d308SAlexander V. Chernikov * Each table consists of 2 different parts: 1347c8d5d308SAlexander V. Chernikov * config: 1348c8d5d308SAlexander V. Chernikov * @tc (with name, set, kidx) and rule bindings, which is "stable". 1349c8d5d308SAlexander V. Chernikov * number of items 1350c8d5d308SAlexander V. Chernikov * table algo 1351c8d5d308SAlexander V. Chernikov * runtime: 1352c8d5d308SAlexander V. Chernikov * runtime data @ti (ch->tablestate) 1353c8d5d308SAlexander V. Chernikov * runtime cache in @tc 1354c8d5d308SAlexander V. Chernikov * algo-specific data (@tc->astate) 1355c8d5d308SAlexander V. Chernikov * 1356c8d5d308SAlexander V. Chernikov * So we switch: 1357c8d5d308SAlexander V. Chernikov * all runtime data 1358c8d5d308SAlexander V. Chernikov * number of items 1359c8d5d308SAlexander V. Chernikov * table algo 1360c8d5d308SAlexander V. Chernikov * 1361c8d5d308SAlexander V. Chernikov * After that we call @ti change handler for each table. 1362c8d5d308SAlexander V. Chernikov * 1363c8d5d308SAlexander V. Chernikov * Note that referencing @tc won't protect tc->ta from change. 1364c8d5d308SAlexander V. Chernikov * XXX: Do we need to restrict swap between locked tables? 1365c8d5d308SAlexander V. Chernikov * XXX: Do we need to exchange ftype? 136635e1bbd0SAlexander V. Chernikov * 136735e1bbd0SAlexander V. Chernikov * Returns 0 on success. 136835e1bbd0SAlexander V. Chernikov */ 136946d52008SAlexander V. Chernikov static int 1370a73d728dSAlexander V. Chernikov swap_tables(struct ip_fw_chain *ch, struct tid_info *a, 137146d52008SAlexander V. Chernikov struct tid_info *b) 137246d52008SAlexander V. Chernikov { 137346d52008SAlexander V. Chernikov struct namedobj_instance *ni; 137446d52008SAlexander V. Chernikov struct table_config *tc_a, *tc_b; 137546d52008SAlexander V. Chernikov struct table_algo *ta; 137646d52008SAlexander V. Chernikov struct table_info ti, *tablestate; 137746d52008SAlexander V. Chernikov void *astate; 137846d52008SAlexander V. Chernikov uint32_t count; 137946d52008SAlexander V. Chernikov 138046d52008SAlexander V. Chernikov /* 138146d52008SAlexander V. Chernikov * Stage 1: find both tables and ensure they are of 138235e1bbd0SAlexander V. Chernikov * the same type. 138346d52008SAlexander V. Chernikov */ 138446d52008SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 138546d52008SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 138646d52008SAlexander V. Chernikov if ((tc_a = find_table(ni, a)) == NULL) { 138746d52008SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 138846d52008SAlexander V. Chernikov return (ESRCH); 138946d52008SAlexander V. Chernikov } 139046d52008SAlexander V. Chernikov if ((tc_b = find_table(ni, b)) == NULL) { 139146d52008SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 139246d52008SAlexander V. Chernikov return (ESRCH); 139346d52008SAlexander V. Chernikov } 139446d52008SAlexander V. Chernikov 139546d52008SAlexander V. Chernikov /* It is very easy to swap between the same table */ 139646d52008SAlexander V. Chernikov if (tc_a == tc_b) { 139746d52008SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 139846d52008SAlexander V. Chernikov return (0); 139946d52008SAlexander V. Chernikov } 140046d52008SAlexander V. Chernikov 140146d52008SAlexander V. Chernikov /* Check type and value are the same */ 14020cba2b28SAlexander V. Chernikov if (tc_a->no.type != tc_b->no.type || tc_a->tflags != tc_b->tflags) { 140346d52008SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 140446d52008SAlexander V. Chernikov return (EINVAL); 140546d52008SAlexander V. Chernikov } 140646d52008SAlexander V. Chernikov 140746d52008SAlexander V. Chernikov /* Check limits before swap */ 140846d52008SAlexander V. Chernikov if ((tc_a->limit != 0 && tc_b->count > tc_a->limit) || 140946d52008SAlexander V. Chernikov (tc_b->limit != 0 && tc_a->count > tc_b->limit)) { 141046d52008SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 141146d52008SAlexander V. Chernikov return (EFBIG); 141246d52008SAlexander V. Chernikov } 141346d52008SAlexander V. Chernikov 1414fd0869d5SAlexander V. Chernikov /* Check if one of the tables is readonly */ 1415fd0869d5SAlexander V. Chernikov if (((tc_a->ta->flags | tc_b->ta->flags) & TA_FLAG_READONLY) != 0) { 1416fd0869d5SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1417fd0869d5SAlexander V. Chernikov return (EACCES); 1418fd0869d5SAlexander V. Chernikov } 1419fd0869d5SAlexander V. Chernikov 14200cba2b28SAlexander V. Chernikov /* Notify we're going to swap */ 14210cba2b28SAlexander V. Chernikov rollback_toperation_state(ch, tc_a); 14220cba2b28SAlexander V. Chernikov rollback_toperation_state(ch, tc_b); 14230cba2b28SAlexander V. Chernikov 142446d52008SAlexander V. Chernikov /* Everything is fine, prepare to swap */ 142546d52008SAlexander V. Chernikov tablestate = (struct table_info *)ch->tablestate; 142646d52008SAlexander V. Chernikov ti = tablestate[tc_a->no.kidx]; 142746d52008SAlexander V. Chernikov ta = tc_a->ta; 142846d52008SAlexander V. Chernikov astate = tc_a->astate; 142946d52008SAlexander V. Chernikov count = tc_a->count; 143046d52008SAlexander V. Chernikov 143146d52008SAlexander V. Chernikov IPFW_WLOCK(ch); 143246d52008SAlexander V. Chernikov /* a <- b */ 143346d52008SAlexander V. Chernikov tablestate[tc_a->no.kidx] = tablestate[tc_b->no.kidx]; 143446d52008SAlexander V. Chernikov tc_a->ta = tc_b->ta; 143546d52008SAlexander V. Chernikov tc_a->astate = tc_b->astate; 143646d52008SAlexander V. Chernikov tc_a->count = tc_b->count; 143746d52008SAlexander V. Chernikov /* b <- a */ 143846d52008SAlexander V. Chernikov tablestate[tc_b->no.kidx] = ti; 143946d52008SAlexander V. Chernikov tc_b->ta = ta; 144046d52008SAlexander V. Chernikov tc_b->astate = astate; 144146d52008SAlexander V. Chernikov tc_b->count = count; 144246d52008SAlexander V. Chernikov IPFW_WUNLOCK(ch); 144346d52008SAlexander V. Chernikov 144446d52008SAlexander V. Chernikov /* Ensure tc.ti copies are in sync */ 14454c060d85SAlexander V. Chernikov tc_a->ti_copy = tablestate[tc_a->no.kidx]; 14464c060d85SAlexander V. Chernikov tc_b->ti_copy = tablestate[tc_b->no.kidx]; 144746d52008SAlexander V. Chernikov 144846d52008SAlexander V. Chernikov /* Notify both tables on @ti change */ 144946d52008SAlexander V. Chernikov if (tc_a->ta->change_ti != NULL) 145046d52008SAlexander V. Chernikov tc_a->ta->change_ti(tc_a->astate, &tablestate[tc_a->no.kidx]); 145146d52008SAlexander V. Chernikov if (tc_b->ta->change_ti != NULL) 145246d52008SAlexander V. Chernikov tc_b->ta->change_ti(tc_b->astate, &tablestate[tc_b->no.kidx]); 145346d52008SAlexander V. Chernikov 145446d52008SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 145546d52008SAlexander V. Chernikov 145646d52008SAlexander V. Chernikov return (0); 145746d52008SAlexander V. Chernikov } 145846d52008SAlexander V. Chernikov 145946d52008SAlexander V. Chernikov /* 14609f7d47b0SAlexander V. Chernikov * Destroys table specified by @ti. 1461ac35ff17SAlexander V. Chernikov * Data layout (v0)(current): 1462ac35ff17SAlexander V. Chernikov * Request: [ ip_fw3_opheader ] 1463ac35ff17SAlexander V. Chernikov * 1464ac35ff17SAlexander V. Chernikov * Returns 0 on success 1465b074b7bbSAlexander V. Chernikov */ 1466ac35ff17SAlexander V. Chernikov static int 1467ac35ff17SAlexander V. Chernikov destroy_table(struct ip_fw_chain *ch, struct tid_info *ti) 1468b074b7bbSAlexander V. Chernikov { 1469b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 1470b074b7bbSAlexander V. Chernikov struct table_config *tc; 1471b074b7bbSAlexander V. Chernikov 1472b074b7bbSAlexander V. Chernikov IPFW_UH_WLOCK(ch); 1473b074b7bbSAlexander V. Chernikov 1474b074b7bbSAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 1475b074b7bbSAlexander V. Chernikov if ((tc = find_table(ni, ti)) == NULL) { 1476b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1477b074b7bbSAlexander V. Chernikov return (ESRCH); 1478b074b7bbSAlexander V. Chernikov } 1479b074b7bbSAlexander V. Chernikov 14809f7d47b0SAlexander V. Chernikov /* Do not permit destroying referenced tables */ 14819f7d47b0SAlexander V. Chernikov if (tc->no.refcnt > 0) { 1482b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1483b074b7bbSAlexander V. Chernikov return (EBUSY); 1484b074b7bbSAlexander V. Chernikov } 1485b074b7bbSAlexander V. Chernikov 1486b074b7bbSAlexander V. Chernikov IPFW_WLOCK(ch); 1487b074b7bbSAlexander V. Chernikov unlink_table(ch, tc); 1488b074b7bbSAlexander V. Chernikov IPFW_WUNLOCK(ch); 1489b074b7bbSAlexander V. Chernikov 1490b074b7bbSAlexander V. Chernikov /* Free obj index */ 1491ac35ff17SAlexander V. Chernikov if (ipfw_objhash_free_idx(ni, tc->no.kidx) != 0) 1492b074b7bbSAlexander V. Chernikov printf("Error unlinking kidx %d from table %s\n", 1493b074b7bbSAlexander V. Chernikov tc->no.kidx, tc->tablename); 1494b074b7bbSAlexander V. Chernikov 14950cba2b28SAlexander V. Chernikov /* Unref values used in tables while holding UH lock */ 14964c060d85SAlexander V. Chernikov ipfw_unref_table_values(ch, tc, tc->ta, tc->astate, &tc->ti_copy); 1497b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1498b074b7bbSAlexander V. Chernikov 1499b074b7bbSAlexander V. Chernikov free_table_config(ni, tc); 1500b074b7bbSAlexander V. Chernikov 1501b074b7bbSAlexander V. Chernikov return (0); 1502b074b7bbSAlexander V. Chernikov } 1503b074b7bbSAlexander V. Chernikov 15044040f4ecSAlexander V. Chernikov static uint32_t 15054040f4ecSAlexander V. Chernikov roundup2p(uint32_t v) 15064040f4ecSAlexander V. Chernikov { 15074040f4ecSAlexander V. Chernikov 15084040f4ecSAlexander V. Chernikov v--; 15094040f4ecSAlexander V. Chernikov v |= v >> 1; 15104040f4ecSAlexander V. Chernikov v |= v >> 2; 15114040f4ecSAlexander V. Chernikov v |= v >> 4; 15124040f4ecSAlexander V. Chernikov v |= v >> 8; 15134040f4ecSAlexander V. Chernikov v |= v >> 16; 15144040f4ecSAlexander V. Chernikov v++; 15154040f4ecSAlexander V. Chernikov 15164040f4ecSAlexander V. Chernikov return (v); 15174040f4ecSAlexander V. Chernikov } 15184040f4ecSAlexander V. Chernikov 151935e1bbd0SAlexander V. Chernikov /* 152035e1bbd0SAlexander V. Chernikov * Grow tables index. 152135e1bbd0SAlexander V. Chernikov * 152235e1bbd0SAlexander V. Chernikov * Returns 0 on success. 152335e1bbd0SAlexander V. Chernikov */ 15243b3a8eb9SGleb Smirnoff int 15253b3a8eb9SGleb Smirnoff ipfw_resize_tables(struct ip_fw_chain *ch, unsigned int ntables) 15263b3a8eb9SGleb Smirnoff { 15273b3a8eb9SGleb Smirnoff unsigned int ntables_old, tbl; 1528b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 15299f7d47b0SAlexander V. Chernikov void *new_idx, *old_tablestate, *tablestate; 153068394ec8SAlexander V. Chernikov struct table_info *ti; 153168394ec8SAlexander V. Chernikov struct table_config *tc; 153268394ec8SAlexander V. Chernikov int i, new_blocks; 15333b3a8eb9SGleb Smirnoff 15343b3a8eb9SGleb Smirnoff /* Check new value for validity */ 15354040f4ecSAlexander V. Chernikov if (ntables == 0) 15364040f4ecSAlexander V. Chernikov return (EINVAL); 15373b3a8eb9SGleb Smirnoff if (ntables > IPFW_TABLES_MAX) 15383b3a8eb9SGleb Smirnoff ntables = IPFW_TABLES_MAX; 15394040f4ecSAlexander V. Chernikov /* Alight to nearest power of 2 */ 15404040f4ecSAlexander V. Chernikov ntables = (unsigned int)roundup2p(ntables); 15413b3a8eb9SGleb Smirnoff 15423b3a8eb9SGleb Smirnoff /* Allocate new pointers */ 15439f7d47b0SAlexander V. Chernikov tablestate = malloc(ntables * sizeof(struct table_info), 15449f7d47b0SAlexander V. Chernikov M_IPFW, M_WAITOK | M_ZERO); 15459f7d47b0SAlexander V. Chernikov 1546b074b7bbSAlexander V. Chernikov ipfw_objhash_bitmap_alloc(ntables, (void *)&new_idx, &new_blocks); 15473b3a8eb9SGleb Smirnoff 15489f7d47b0SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 15493b3a8eb9SGleb Smirnoff 15503b3a8eb9SGleb Smirnoff tbl = (ntables >= V_fw_tables_max) ? V_fw_tables_max : ntables; 1551b074b7bbSAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 1552b074b7bbSAlexander V. Chernikov 15539f7d47b0SAlexander V. Chernikov /* Temporary restrict decreasing max_tables */ 15549f7d47b0SAlexander V. Chernikov if (ntables < V_fw_tables_max) { 15559f7d47b0SAlexander V. Chernikov 15569f7d47b0SAlexander V. Chernikov /* 15579f7d47b0SAlexander V. Chernikov * FIXME: Check if we really can shrink 15589f7d47b0SAlexander V. Chernikov */ 15599f7d47b0SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1560b074b7bbSAlexander V. Chernikov return (EINVAL); 1561b074b7bbSAlexander V. Chernikov } 15623b3a8eb9SGleb Smirnoff 15639f7d47b0SAlexander V. Chernikov /* Copy table info/indices */ 15649f7d47b0SAlexander V. Chernikov memcpy(tablestate, ch->tablestate, sizeof(struct table_info) * tbl); 15659f7d47b0SAlexander V. Chernikov ipfw_objhash_bitmap_merge(ni, &new_idx, &new_blocks); 15663b3a8eb9SGleb Smirnoff 15679f7d47b0SAlexander V. Chernikov IPFW_WLOCK(ch); 15689f7d47b0SAlexander V. Chernikov 15699f7d47b0SAlexander V. Chernikov /* Change pointers */ 15709f7d47b0SAlexander V. Chernikov old_tablestate = ch->tablestate; 15719f7d47b0SAlexander V. Chernikov ch->tablestate = tablestate; 15729f7d47b0SAlexander V. Chernikov ipfw_objhash_bitmap_swap(ni, &new_idx, &new_blocks); 15733b3a8eb9SGleb Smirnoff 15743b3a8eb9SGleb Smirnoff ntables_old = V_fw_tables_max; 15753b3a8eb9SGleb Smirnoff V_fw_tables_max = ntables; 15763b3a8eb9SGleb Smirnoff 15773b3a8eb9SGleb Smirnoff IPFW_WUNLOCK(ch); 157868394ec8SAlexander V. Chernikov 157968394ec8SAlexander V. Chernikov /* Notify all consumers that their @ti pointer has changed */ 158068394ec8SAlexander V. Chernikov ti = (struct table_info *)ch->tablestate; 158168394ec8SAlexander V. Chernikov for (i = 0; i < tbl; i++, ti++) { 158268394ec8SAlexander V. Chernikov if (ti->lookup == NULL) 158368394ec8SAlexander V. Chernikov continue; 158468394ec8SAlexander V. Chernikov tc = (struct table_config *)ipfw_objhash_lookup_kidx(ni, i); 158568394ec8SAlexander V. Chernikov if (tc == NULL || tc->ta->change_ti == NULL) 158668394ec8SAlexander V. Chernikov continue; 158768394ec8SAlexander V. Chernikov 158868394ec8SAlexander V. Chernikov tc->ta->change_ti(tc->astate, ti); 158968394ec8SAlexander V. Chernikov } 159068394ec8SAlexander V. Chernikov 15919f7d47b0SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 15923b3a8eb9SGleb Smirnoff 15933b3a8eb9SGleb Smirnoff /* Free old pointers */ 15949f7d47b0SAlexander V. Chernikov free(old_tablestate, M_IPFW); 1595b074b7bbSAlexander V. Chernikov ipfw_objhash_bitmap_free(new_idx, new_blocks); 15963b3a8eb9SGleb Smirnoff 15973b3a8eb9SGleb Smirnoff return (0); 15983b3a8eb9SGleb Smirnoff } 15993b3a8eb9SGleb Smirnoff 1600a73d728dSAlexander V. Chernikov /* 160135e1bbd0SAlexander V. Chernikov * Switch between "set 0" and "rule's set" table binding, 1602a73d728dSAlexander V. Chernikov * Check all ruleset bindings and permits changing 1603a73d728dSAlexander V. Chernikov * IFF each binding has both rule AND table in default set (set 0). 1604a73d728dSAlexander V. Chernikov * 1605a73d728dSAlexander V. Chernikov * Returns 0 on success. 1606a73d728dSAlexander V. Chernikov */ 1607a73d728dSAlexander V. Chernikov int 1608a73d728dSAlexander V. Chernikov ipfw_switch_tables_namespace(struct ip_fw_chain *ch, unsigned int sets) 1609a73d728dSAlexander V. Chernikov { 1610a73d728dSAlexander V. Chernikov struct namedobj_instance *ni; 1611a73d728dSAlexander V. Chernikov struct named_object *no; 1612a73d728dSAlexander V. Chernikov struct ip_fw *rule; 1613a73d728dSAlexander V. Chernikov ipfw_insn *cmd; 1614a73d728dSAlexander V. Chernikov int cmdlen, i, l; 1615a73d728dSAlexander V. Chernikov uint16_t kidx; 1616a73d728dSAlexander V. Chernikov uint8_t type; 1617a73d728dSAlexander V. Chernikov 1618a73d728dSAlexander V. Chernikov IPFW_UH_WLOCK(ch); 1619a73d728dSAlexander V. Chernikov 1620a73d728dSAlexander V. Chernikov if (V_fw_tables_sets == sets) { 1621a73d728dSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1622a73d728dSAlexander V. Chernikov return (0); 1623a73d728dSAlexander V. Chernikov } 1624a73d728dSAlexander V. Chernikov 1625a73d728dSAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 1626a73d728dSAlexander V. Chernikov 162735e1bbd0SAlexander V. Chernikov /* 162835e1bbd0SAlexander V. Chernikov * Scan all rules and examine tables opcodes. 162935e1bbd0SAlexander V. Chernikov */ 1630a73d728dSAlexander V. Chernikov for (i = 0; i < ch->n_rules; i++) { 1631a73d728dSAlexander V. Chernikov rule = ch->map[i]; 1632a73d728dSAlexander V. Chernikov 1633a73d728dSAlexander V. Chernikov l = rule->cmd_len; 1634a73d728dSAlexander V. Chernikov cmd = rule->cmd; 1635a73d728dSAlexander V. Chernikov cmdlen = 0; 1636a73d728dSAlexander V. Chernikov for ( ; l > 0 ; l -= cmdlen, cmd += cmdlen) { 1637a73d728dSAlexander V. Chernikov cmdlen = F_LEN(cmd); 1638a73d728dSAlexander V. Chernikov 1639a73d728dSAlexander V. Chernikov if (classify_table_opcode(cmd, &kidx, &type) != 0) 1640a73d728dSAlexander V. Chernikov continue; 1641a73d728dSAlexander V. Chernikov 1642a73d728dSAlexander V. Chernikov no = ipfw_objhash_lookup_kidx(ni, kidx); 1643a73d728dSAlexander V. Chernikov 164435e1bbd0SAlexander V. Chernikov /* Check if both table object and rule has the set 0 */ 1645a73d728dSAlexander V. Chernikov if (no->set != 0 || rule->set != 0) { 1646a73d728dSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1647a73d728dSAlexander V. Chernikov return (EBUSY); 1648a73d728dSAlexander V. Chernikov } 1649a73d728dSAlexander V. Chernikov 1650a73d728dSAlexander V. Chernikov } 1651a73d728dSAlexander V. Chernikov } 1652a73d728dSAlexander V. Chernikov V_fw_tables_sets = sets; 1653a73d728dSAlexander V. Chernikov 1654a73d728dSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1655a73d728dSAlexander V. Chernikov 1656a73d728dSAlexander V. Chernikov return (0); 1657a73d728dSAlexander V. Chernikov } 1658a73d728dSAlexander V. Chernikov 1659c8d5d308SAlexander V. Chernikov /* 1660c8d5d308SAlexander V. Chernikov * Lookup an IP @addr in table @tbl. 1661c8d5d308SAlexander V. Chernikov * Stores found value in @val. 1662c8d5d308SAlexander V. Chernikov * 1663c8d5d308SAlexander V. Chernikov * Returns 1 if @addr was found. 1664c8d5d308SAlexander V. Chernikov */ 16653b3a8eb9SGleb Smirnoff int 16663b3a8eb9SGleb Smirnoff ipfw_lookup_table(struct ip_fw_chain *ch, uint16_t tbl, in_addr_t addr, 16673b3a8eb9SGleb Smirnoff uint32_t *val) 16683b3a8eb9SGleb Smirnoff { 16699f7d47b0SAlexander V. Chernikov struct table_info *ti; 16703b3a8eb9SGleb Smirnoff 1671c8d5d308SAlexander V. Chernikov ti = KIDX_TO_TI(ch, tbl); 16729f7d47b0SAlexander V. Chernikov 16739f7d47b0SAlexander V. Chernikov return (ti->lookup(ti, &addr, sizeof(in_addr_t), val)); 16743b3a8eb9SGleb Smirnoff } 16759f7d47b0SAlexander V. Chernikov 1676c8d5d308SAlexander V. Chernikov /* 1677c8d5d308SAlexander V. Chernikov * Lookup an arbtrary key @paddr of legth @plen in table @tbl. 1678c8d5d308SAlexander V. Chernikov * Stores found value in @val. 1679c8d5d308SAlexander V. Chernikov * 1680c8d5d308SAlexander V. Chernikov * Returns 1 if key was found. 1681c8d5d308SAlexander V. Chernikov */ 16829f7d47b0SAlexander V. Chernikov int 16839f7d47b0SAlexander V. Chernikov ipfw_lookup_table_extended(struct ip_fw_chain *ch, uint16_t tbl, uint16_t plen, 16849f7d47b0SAlexander V. Chernikov void *paddr, uint32_t *val) 16859f7d47b0SAlexander V. Chernikov { 16869f7d47b0SAlexander V. Chernikov struct table_info *ti; 16879f7d47b0SAlexander V. Chernikov 1688c8d5d308SAlexander V. Chernikov ti = KIDX_TO_TI(ch, tbl); 16899f7d47b0SAlexander V. Chernikov 16909f7d47b0SAlexander V. Chernikov return (ti->lookup(ti, paddr, plen, val)); 16919f7d47b0SAlexander V. Chernikov } 16929f7d47b0SAlexander V. Chernikov 16939f7d47b0SAlexander V. Chernikov /* 16949f7d47b0SAlexander V. Chernikov * Info/List/dump support for tables. 16959f7d47b0SAlexander V. Chernikov * 16969f7d47b0SAlexander V. Chernikov */ 16979f7d47b0SAlexander V. Chernikov 1698f1220db8SAlexander V. Chernikov /* 1699d3a4f924SAlexander V. Chernikov * High-level 'get' cmds sysctl handlers 1700d3a4f924SAlexander V. Chernikov */ 1701d3a4f924SAlexander V. Chernikov 1702d3a4f924SAlexander V. Chernikov /* 1703d3a4f924SAlexander V. Chernikov * Lists all tables currently available in kernel. 1704ac35ff17SAlexander V. Chernikov * Data layout (v0)(current): 1705d3a4f924SAlexander V. Chernikov * Request: [ ipfw_obj_lheader ], size = ipfw_obj_lheader.size 1706d3a4f924SAlexander V. Chernikov * Reply: [ ipfw_obj_lheader ipfw_xtable_info x N ] 1707d3a4f924SAlexander V. Chernikov * 1708d3a4f924SAlexander V. Chernikov * Returns 0 on success 1709d3a4f924SAlexander V. Chernikov */ 17106b988f3aSAlexander V. Chernikov static int 17116b988f3aSAlexander V. Chernikov list_tables(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 1712e822d936SAlexander V. Chernikov struct sockopt_data *sd) 1713f1220db8SAlexander V. Chernikov { 1714f1220db8SAlexander V. Chernikov struct _ipfw_obj_lheader *olh; 1715f1220db8SAlexander V. Chernikov int error; 1716f1220db8SAlexander V. Chernikov 17172d99a349SAlexander V. Chernikov olh = (struct _ipfw_obj_lheader *)ipfw_get_sopt_header(sd,sizeof(*olh)); 17182d99a349SAlexander V. Chernikov if (olh == NULL) 1719d3a4f924SAlexander V. Chernikov return (EINVAL); 172068394ec8SAlexander V. Chernikov if (sd->valsize < olh->size) 172168394ec8SAlexander V. Chernikov return (EINVAL); 1722d3a4f924SAlexander V. Chernikov 1723f1220db8SAlexander V. Chernikov IPFW_UH_RLOCK(ch); 17242d99a349SAlexander V. Chernikov error = export_tables(ch, olh, sd); 1725f1220db8SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 1726f1220db8SAlexander V. Chernikov 1727f1220db8SAlexander V. Chernikov return (error); 1728f1220db8SAlexander V. Chernikov } 1729f1220db8SAlexander V. Chernikov 1730f1220db8SAlexander V. Chernikov /* 17312d99a349SAlexander V. Chernikov * Store table info to buffer provided by @sd. 1732ac35ff17SAlexander V. Chernikov * Data layout (v0)(current): 1733d3a4f924SAlexander V. Chernikov * Request: [ ipfw_obj_header ipfw_xtable_info(empty)] 1734d3a4f924SAlexander V. Chernikov * Reply: [ ipfw_obj_header ipfw_xtable_info ] 1735d3a4f924SAlexander V. Chernikov * 1736d3a4f924SAlexander V. Chernikov * Returns 0 on success. 1737d3a4f924SAlexander V. Chernikov */ 17386b988f3aSAlexander V. Chernikov static int 17396b988f3aSAlexander V. Chernikov describe_table(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 1740e822d936SAlexander V. Chernikov struct sockopt_data *sd) 1741d3a4f924SAlexander V. Chernikov { 1742d3a4f924SAlexander V. Chernikov struct _ipfw_obj_header *oh; 1743d3a4f924SAlexander V. Chernikov struct table_config *tc; 1744d3a4f924SAlexander V. Chernikov struct tid_info ti; 1745d3a4f924SAlexander V. Chernikov size_t sz; 1746d3a4f924SAlexander V. Chernikov 1747d3a4f924SAlexander V. Chernikov sz = sizeof(*oh) + sizeof(ipfw_xtable_info); 17482d99a349SAlexander V. Chernikov oh = (struct _ipfw_obj_header *)ipfw_get_sopt_header(sd, sz); 17492d99a349SAlexander V. Chernikov if (oh == NULL) 1750d3a4f924SAlexander V. Chernikov return (EINVAL); 1751d3a4f924SAlexander V. Chernikov 1752d3a4f924SAlexander V. Chernikov objheader_to_ti(oh, &ti); 1753d3a4f924SAlexander V. Chernikov 1754d3a4f924SAlexander V. Chernikov IPFW_UH_RLOCK(ch); 1755d3a4f924SAlexander V. Chernikov if ((tc = find_table(CHAIN_TO_NI(ch), &ti)) == NULL) { 1756d3a4f924SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 1757d3a4f924SAlexander V. Chernikov return (ESRCH); 1758d3a4f924SAlexander V. Chernikov } 1759d3a4f924SAlexander V. Chernikov 1760ac35ff17SAlexander V. Chernikov export_table_info(ch, tc, (ipfw_xtable_info *)(oh + 1)); 1761d3a4f924SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 1762d3a4f924SAlexander V. Chernikov 17632d99a349SAlexander V. Chernikov return (0); 1764d3a4f924SAlexander V. Chernikov } 1765d3a4f924SAlexander V. Chernikov 1766d3a4f924SAlexander V. Chernikov /* 1767adf3b2b9SAlexander V. Chernikov * Modifies existing table. 1768adf3b2b9SAlexander V. Chernikov * Data layout (v0)(current): 1769adf3b2b9SAlexander V. Chernikov * Request: [ ipfw_obj_header ipfw_xtable_info ] 1770adf3b2b9SAlexander V. Chernikov * 1771adf3b2b9SAlexander V. Chernikov * Returns 0 on success 1772adf3b2b9SAlexander V. Chernikov */ 17736b988f3aSAlexander V. Chernikov static int 17746b988f3aSAlexander V. Chernikov modify_table(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 1775adf3b2b9SAlexander V. Chernikov struct sockopt_data *sd) 1776adf3b2b9SAlexander V. Chernikov { 1777adf3b2b9SAlexander V. Chernikov struct _ipfw_obj_header *oh; 1778adf3b2b9SAlexander V. Chernikov ipfw_xtable_info *i; 1779adf3b2b9SAlexander V. Chernikov char *tname; 1780adf3b2b9SAlexander V. Chernikov struct tid_info ti; 1781adf3b2b9SAlexander V. Chernikov struct namedobj_instance *ni; 1782adf3b2b9SAlexander V. Chernikov struct table_config *tc; 1783adf3b2b9SAlexander V. Chernikov 1784adf3b2b9SAlexander V. Chernikov if (sd->valsize != sizeof(*oh) + sizeof(ipfw_xtable_info)) 1785adf3b2b9SAlexander V. Chernikov return (EINVAL); 1786adf3b2b9SAlexander V. Chernikov 1787adf3b2b9SAlexander V. Chernikov oh = (struct _ipfw_obj_header *)sd->kbuf; 1788adf3b2b9SAlexander V. Chernikov i = (ipfw_xtable_info *)(oh + 1); 1789adf3b2b9SAlexander V. Chernikov 1790adf3b2b9SAlexander V. Chernikov /* 1791adf3b2b9SAlexander V. Chernikov * Verify user-supplied strings. 1792adf3b2b9SAlexander V. Chernikov * Check for null-terminated/zero-length strings/ 1793adf3b2b9SAlexander V. Chernikov */ 1794adf3b2b9SAlexander V. Chernikov tname = oh->ntlv.name; 1795adf3b2b9SAlexander V. Chernikov if (ipfw_check_table_name(tname) != 0) 1796adf3b2b9SAlexander V. Chernikov return (EINVAL); 1797adf3b2b9SAlexander V. Chernikov 1798adf3b2b9SAlexander V. Chernikov objheader_to_ti(oh, &ti); 1799adf3b2b9SAlexander V. Chernikov ti.type = i->type; 1800adf3b2b9SAlexander V. Chernikov 1801adf3b2b9SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 1802adf3b2b9SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 1803adf3b2b9SAlexander V. Chernikov if ((tc = find_table(ni, &ti)) == NULL) { 1804adf3b2b9SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1805adf3b2b9SAlexander V. Chernikov return (ESRCH); 1806adf3b2b9SAlexander V. Chernikov } 1807fd0869d5SAlexander V. Chernikov 1808fd0869d5SAlexander V. Chernikov /* Do not support any modifications for readonly tables */ 1809fd0869d5SAlexander V. Chernikov if ((tc->ta->flags & TA_FLAG_READONLY) != 0) { 1810fd0869d5SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1811fd0869d5SAlexander V. Chernikov return (EACCES); 1812fd0869d5SAlexander V. Chernikov } 1813fd0869d5SAlexander V. Chernikov 1814adf3b2b9SAlexander V. Chernikov if ((i->mflags & IPFW_TMFLAGS_LIMIT) != 0) 1815adf3b2b9SAlexander V. Chernikov tc->limit = i->limit; 18164f43138aSAlexander V. Chernikov if ((i->mflags & IPFW_TMFLAGS_LOCK) != 0) 18174f43138aSAlexander V. Chernikov tc->locked = ((i->flags & IPFW_TGFLAGS_LOCKED) != 0); 1818adf3b2b9SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1819adf3b2b9SAlexander V. Chernikov 1820adf3b2b9SAlexander V. Chernikov return (0); 1821adf3b2b9SAlexander V. Chernikov } 1822adf3b2b9SAlexander V. Chernikov 1823adf3b2b9SAlexander V. Chernikov /* 18249490a627SAlexander V. Chernikov * Creates new table. 1825ac35ff17SAlexander V. Chernikov * Data layout (v0)(current): 18269490a627SAlexander V. Chernikov * Request: [ ipfw_obj_header ipfw_xtable_info ] 18279490a627SAlexander V. Chernikov * 18289490a627SAlexander V. Chernikov * Returns 0 on success 18299490a627SAlexander V. Chernikov */ 18306b988f3aSAlexander V. Chernikov static int 18316b988f3aSAlexander V. Chernikov create_table(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 1832ac35ff17SAlexander V. Chernikov struct sockopt_data *sd) 18339490a627SAlexander V. Chernikov { 18349490a627SAlexander V. Chernikov struct _ipfw_obj_header *oh; 18359490a627SAlexander V. Chernikov ipfw_xtable_info *i; 18369490a627SAlexander V. Chernikov char *tname, *aname; 18379490a627SAlexander V. Chernikov struct tid_info ti; 18389490a627SAlexander V. Chernikov struct namedobj_instance *ni; 18399490a627SAlexander V. Chernikov 1840ac35ff17SAlexander V. Chernikov if (sd->valsize != sizeof(*oh) + sizeof(ipfw_xtable_info)) 18419490a627SAlexander V. Chernikov return (EINVAL); 18429490a627SAlexander V. Chernikov 1843ac35ff17SAlexander V. Chernikov oh = (struct _ipfw_obj_header *)sd->kbuf; 18449490a627SAlexander V. Chernikov i = (ipfw_xtable_info *)(oh + 1); 18459490a627SAlexander V. Chernikov 18469490a627SAlexander V. Chernikov /* 18479490a627SAlexander V. Chernikov * Verify user-supplied strings. 18482d99a349SAlexander V. Chernikov * Check for null-terminated/zero-length strings/ 18499490a627SAlexander V. Chernikov */ 1850ac35ff17SAlexander V. Chernikov tname = oh->ntlv.name; 18519490a627SAlexander V. Chernikov aname = i->algoname; 1852ac35ff17SAlexander V. Chernikov if (ipfw_check_table_name(tname) != 0 || 18539490a627SAlexander V. Chernikov strnlen(aname, sizeof(i->algoname)) == sizeof(i->algoname)) 18549490a627SAlexander V. Chernikov return (EINVAL); 18559490a627SAlexander V. Chernikov 18569490a627SAlexander V. Chernikov if (aname[0] == '\0') { 18579490a627SAlexander V. Chernikov /* Use default algorithm */ 18589490a627SAlexander V. Chernikov aname = NULL; 18599490a627SAlexander V. Chernikov } 18609490a627SAlexander V. Chernikov 18619490a627SAlexander V. Chernikov objheader_to_ti(oh, &ti); 1862ac35ff17SAlexander V. Chernikov ti.type = i->type; 18639490a627SAlexander V. Chernikov 18649490a627SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 18659490a627SAlexander V. Chernikov 18669490a627SAlexander V. Chernikov IPFW_UH_RLOCK(ch); 1867038263c3SAlexander V. Chernikov if (find_table(ni, &ti) != NULL) { 18689490a627SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 18699490a627SAlexander V. Chernikov return (EEXIST); 18709490a627SAlexander V. Chernikov } 18719490a627SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 18729490a627SAlexander V. Chernikov 1873867708f7SAlexander V. Chernikov return (create_table_internal(ch, &ti, aname, i, NULL, 0)); 1874db785d31SAlexander V. Chernikov } 1875db785d31SAlexander V. Chernikov 1876db785d31SAlexander V. Chernikov /* 1877db785d31SAlexander V. Chernikov * Creates new table based on @ti and @aname. 1878db785d31SAlexander V. Chernikov * 1879db785d31SAlexander V. Chernikov * Relies on table name checking inside find_name_tlv() 1880db785d31SAlexander V. Chernikov * Assume @aname to be checked and valid. 1881867708f7SAlexander V. Chernikov * Stores allocated table kidx inside @pkidx (if non-NULL). 18820468c5baSAlexander V. Chernikov * Reference created table if @compat is non-zero. 1883db785d31SAlexander V. Chernikov * 1884db785d31SAlexander V. Chernikov * Returns 0 on success. 1885db785d31SAlexander V. Chernikov */ 1886db785d31SAlexander V. Chernikov static int 1887db785d31SAlexander V. Chernikov create_table_internal(struct ip_fw_chain *ch, struct tid_info *ti, 1888867708f7SAlexander V. Chernikov char *aname, ipfw_xtable_info *i, uint16_t *pkidx, int compat) 1889db785d31SAlexander V. Chernikov { 1890db785d31SAlexander V. Chernikov struct namedobj_instance *ni; 1891c8d5d308SAlexander V. Chernikov struct table_config *tc, *tc_new, *tmp; 1892db785d31SAlexander V. Chernikov struct table_algo *ta; 1893db785d31SAlexander V. Chernikov uint16_t kidx; 1894db785d31SAlexander V. Chernikov 1895db785d31SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 1896db785d31SAlexander V. Chernikov 1897db785d31SAlexander V. Chernikov ta = find_table_algo(CHAIN_TO_TCFG(ch), ti, aname); 18989490a627SAlexander V. Chernikov if (ta == NULL) 18999490a627SAlexander V. Chernikov return (ENOTSUP); 19009490a627SAlexander V. Chernikov 19010cba2b28SAlexander V. Chernikov tc = alloc_table_config(ch, ti, ta, aname, i->tflags); 19024c0c07a5SAlexander V. Chernikov if (tc == NULL) 19039490a627SAlexander V. Chernikov return (ENOMEM); 19049490a627SAlexander V. Chernikov 19050cba2b28SAlexander V. Chernikov tc->vmask = i->vmask; 19064c0c07a5SAlexander V. Chernikov tc->limit = i->limit; 1907fd0869d5SAlexander V. Chernikov if (ta->flags & TA_FLAG_READONLY) 1908fd0869d5SAlexander V. Chernikov tc->locked = 1; 1909fd0869d5SAlexander V. Chernikov else 19104f43138aSAlexander V. Chernikov tc->locked = (i->flags & IPFW_TGFLAGS_LOCKED) != 0; 19114c0c07a5SAlexander V. Chernikov 19129490a627SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 1913db785d31SAlexander V. Chernikov 1914db785d31SAlexander V. Chernikov /* Check if table has been already created */ 19150468c5baSAlexander V. Chernikov tc_new = find_table(ni, ti); 19160468c5baSAlexander V. Chernikov if (tc_new != NULL) { 19170468c5baSAlexander V. Chernikov 19180468c5baSAlexander V. Chernikov /* 19190468c5baSAlexander V. Chernikov * Compat: do not fail if we're 19200468c5baSAlexander V. Chernikov * requesting to create existing table 19210cba2b28SAlexander V. Chernikov * which has the same type 19220468c5baSAlexander V. Chernikov */ 19230cba2b28SAlexander V. Chernikov if (compat == 0 || tc_new->no.type != tc->no.type) { 1924db785d31SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1925db785d31SAlexander V. Chernikov free_table_config(ni, tc); 1926db785d31SAlexander V. Chernikov return (EEXIST); 1927db785d31SAlexander V. Chernikov } 1928db785d31SAlexander V. Chernikov 19290468c5baSAlexander V. Chernikov /* Exchange tc and tc_new for proper refcounting & freeing */ 19300468c5baSAlexander V. Chernikov tmp = tc; 19310468c5baSAlexander V. Chernikov tc = tc_new; 19320468c5baSAlexander V. Chernikov tc_new = tmp; 19330468c5baSAlexander V. Chernikov } else { 19340468c5baSAlexander V. Chernikov /* New table */ 1935ac35ff17SAlexander V. Chernikov if (ipfw_objhash_alloc_idx(ni, &kidx) != 0) { 19369490a627SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1937db785d31SAlexander V. Chernikov printf("Unable to allocate table index." 1938db785d31SAlexander V. Chernikov " Consider increasing net.inet.ip.fw.tables_max"); 19399490a627SAlexander V. Chernikov free_table_config(ni, tc); 19409490a627SAlexander V. Chernikov return (EBUSY); 19419490a627SAlexander V. Chernikov } 19429490a627SAlexander V. Chernikov tc->no.kidx = kidx; 19439490a627SAlexander V. Chernikov 19449490a627SAlexander V. Chernikov IPFW_WLOCK(ch); 19459490a627SAlexander V. Chernikov link_table(ch, tc); 19469490a627SAlexander V. Chernikov IPFW_WUNLOCK(ch); 19470468c5baSAlexander V. Chernikov } 19480468c5baSAlexander V. Chernikov 19490468c5baSAlexander V. Chernikov if (compat != 0) 19500468c5baSAlexander V. Chernikov tc->no.refcnt++; 19510468c5baSAlexander V. Chernikov if (pkidx != NULL) 19520468c5baSAlexander V. Chernikov *pkidx = tc->no.kidx; 19539490a627SAlexander V. Chernikov 19549490a627SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 19559490a627SAlexander V. Chernikov 19560468c5baSAlexander V. Chernikov if (tc_new != NULL) 19570468c5baSAlexander V. Chernikov free_table_config(ni, tc_new); 19580468c5baSAlexander V. Chernikov 19599490a627SAlexander V. Chernikov return (0); 19609490a627SAlexander V. Chernikov } 19619490a627SAlexander V. Chernikov 196246d52008SAlexander V. Chernikov static void 196346d52008SAlexander V. Chernikov ntlv_to_ti(ipfw_obj_ntlv *ntlv, struct tid_info *ti) 1964d3a4f924SAlexander V. Chernikov { 1965d3a4f924SAlexander V. Chernikov 1966d3a4f924SAlexander V. Chernikov memset(ti, 0, sizeof(struct tid_info)); 196746d52008SAlexander V. Chernikov ti->set = ntlv->set; 196846d52008SAlexander V. Chernikov ti->uidx = ntlv->idx; 196946d52008SAlexander V. Chernikov ti->tlvs = ntlv; 197046d52008SAlexander V. Chernikov ti->tlen = ntlv->head.length; 197146d52008SAlexander V. Chernikov } 197246d52008SAlexander V. Chernikov 197346d52008SAlexander V. Chernikov static void 197446d52008SAlexander V. Chernikov objheader_to_ti(struct _ipfw_obj_header *oh, struct tid_info *ti) 197546d52008SAlexander V. Chernikov { 197646d52008SAlexander V. Chernikov 197746d52008SAlexander V. Chernikov ntlv_to_ti(&oh->ntlv, ti); 1978d3a4f924SAlexander V. Chernikov } 1979d3a4f924SAlexander V. Chernikov 198035e1bbd0SAlexander V. Chernikov /* 198135e1bbd0SAlexander V. Chernikov * Exports basic table info as name TLV. 198235e1bbd0SAlexander V. Chernikov * Used inside dump_static_rules() to provide info 198335e1bbd0SAlexander V. Chernikov * about all tables referenced by current ruleset. 198435e1bbd0SAlexander V. Chernikov * 198535e1bbd0SAlexander V. Chernikov * Returns 0 on success. 198635e1bbd0SAlexander V. Chernikov */ 1987563b5ab1SAlexander V. Chernikov int 1988563b5ab1SAlexander V. Chernikov ipfw_export_table_ntlv(struct ip_fw_chain *ch, uint16_t kidx, 1989563b5ab1SAlexander V. Chernikov struct sockopt_data *sd) 1990563b5ab1SAlexander V. Chernikov { 1991563b5ab1SAlexander V. Chernikov struct namedobj_instance *ni; 1992563b5ab1SAlexander V. Chernikov struct named_object *no; 1993563b5ab1SAlexander V. Chernikov ipfw_obj_ntlv *ntlv; 1994563b5ab1SAlexander V. Chernikov 1995563b5ab1SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 1996563b5ab1SAlexander V. Chernikov 1997ac35ff17SAlexander V. Chernikov no = ipfw_objhash_lookup_kidx(ni, kidx); 1998563b5ab1SAlexander V. Chernikov KASSERT(no != NULL, ("invalid table kidx passed")); 1999563b5ab1SAlexander V. Chernikov 2000563b5ab1SAlexander V. Chernikov ntlv = (ipfw_obj_ntlv *)ipfw_get_sopt_space(sd, sizeof(*ntlv)); 2001563b5ab1SAlexander V. Chernikov if (ntlv == NULL) 2002563b5ab1SAlexander V. Chernikov return (ENOMEM); 2003563b5ab1SAlexander V. Chernikov 2004563b5ab1SAlexander V. Chernikov ntlv->head.type = IPFW_TLV_TBL_NAME; 2005563b5ab1SAlexander V. Chernikov ntlv->head.length = sizeof(*ntlv); 2006563b5ab1SAlexander V. Chernikov ntlv->idx = no->kidx; 2007563b5ab1SAlexander V. Chernikov strlcpy(ntlv->name, no->name, sizeof(ntlv->name)); 2008563b5ab1SAlexander V. Chernikov 2009563b5ab1SAlexander V. Chernikov return (0); 2010563b5ab1SAlexander V. Chernikov } 2011563b5ab1SAlexander V. Chernikov 201235e1bbd0SAlexander V. Chernikov /* 2013f99fbf96SAlexander V. Chernikov * Marks every table kidx used in @rule with bit in @bmask. 2014f99fbf96SAlexander V. Chernikov * Used to generate bitmask of referenced tables for given ruleset. 2015f99fbf96SAlexander V. Chernikov * 2016f99fbf96SAlexander V. Chernikov * Returns number of newly-referenced tables. 2017f99fbf96SAlexander V. Chernikov */ 2018f99fbf96SAlexander V. Chernikov int 2019f99fbf96SAlexander V. Chernikov ipfw_mark_table_kidx(struct ip_fw_chain *chain, struct ip_fw *rule, 2020f99fbf96SAlexander V. Chernikov uint32_t *bmask) 2021f99fbf96SAlexander V. Chernikov { 2022f99fbf96SAlexander V. Chernikov int cmdlen, l, count; 2023f99fbf96SAlexander V. Chernikov ipfw_insn *cmd; 2024f99fbf96SAlexander V. Chernikov uint16_t kidx; 2025f99fbf96SAlexander V. Chernikov uint8_t type; 2026f99fbf96SAlexander V. Chernikov 2027f99fbf96SAlexander V. Chernikov l = rule->cmd_len; 2028f99fbf96SAlexander V. Chernikov cmd = rule->cmd; 2029f99fbf96SAlexander V. Chernikov cmdlen = 0; 2030f99fbf96SAlexander V. Chernikov count = 0; 2031f99fbf96SAlexander V. Chernikov for ( ; l > 0 ; l -= cmdlen, cmd += cmdlen) { 2032f99fbf96SAlexander V. Chernikov cmdlen = F_LEN(cmd); 2033f99fbf96SAlexander V. Chernikov 2034f99fbf96SAlexander V. Chernikov if (classify_table_opcode(cmd, &kidx, &type) != 0) 2035f99fbf96SAlexander V. Chernikov continue; 2036f99fbf96SAlexander V. Chernikov 2037f99fbf96SAlexander V. Chernikov if ((bmask[kidx / 32] & (1 << (kidx % 32))) == 0) 2038f99fbf96SAlexander V. Chernikov count++; 2039f99fbf96SAlexander V. Chernikov 2040f99fbf96SAlexander V. Chernikov bmask[kidx / 32] |= 1 << (kidx % 32); 2041f99fbf96SAlexander V. Chernikov } 2042f99fbf96SAlexander V. Chernikov 2043f99fbf96SAlexander V. Chernikov return (count); 2044f99fbf96SAlexander V. Chernikov } 2045f99fbf96SAlexander V. Chernikov 2046d3b00c08SAlexander V. Chernikov struct dump_args { 20470cba2b28SAlexander V. Chernikov struct ip_fw_chain *ch; 2048d3b00c08SAlexander V. Chernikov struct table_info *ti; 2049d3b00c08SAlexander V. Chernikov struct table_config *tc; 2050d3b00c08SAlexander V. Chernikov struct sockopt_data *sd; 2051d3b00c08SAlexander V. Chernikov uint32_t cnt; 2052d3b00c08SAlexander V. Chernikov uint16_t uidx; 2053d3b00c08SAlexander V. Chernikov int error; 2054d3b00c08SAlexander V. Chernikov uint32_t size; 20554dff4ae0SAlexander V. Chernikov ipfw_table_entry *ent; 20564dff4ae0SAlexander V. Chernikov ta_foreach_f *f; 20574dff4ae0SAlexander V. Chernikov void *farg; 2058d3b00c08SAlexander V. Chernikov ipfw_obj_tentry tent; 2059d3b00c08SAlexander V. Chernikov }; 2060d3b00c08SAlexander V. Chernikov 2061d3b00c08SAlexander V. Chernikov static int 2062d3b00c08SAlexander V. Chernikov count_ext_entries(void *e, void *arg) 2063d3b00c08SAlexander V. Chernikov { 2064d3b00c08SAlexander V. Chernikov struct dump_args *da; 2065d3b00c08SAlexander V. Chernikov 2066d3b00c08SAlexander V. Chernikov da = (struct dump_args *)arg; 2067d3b00c08SAlexander V. Chernikov da->cnt++; 2068d3b00c08SAlexander V. Chernikov 2069d3b00c08SAlexander V. Chernikov return (0); 2070d3b00c08SAlexander V. Chernikov } 2071d3b00c08SAlexander V. Chernikov 2072d3b00c08SAlexander V. Chernikov /* 2073d3b00c08SAlexander V. Chernikov * Gets number of items from table either using 2074d3b00c08SAlexander V. Chernikov * internal counter or calling algo callback for 2075d3b00c08SAlexander V. Chernikov * externally-managed tables. 2076d3b00c08SAlexander V. Chernikov * 2077d3b00c08SAlexander V. Chernikov * Returns number of records. 2078d3b00c08SAlexander V. Chernikov */ 2079d3b00c08SAlexander V. Chernikov static uint32_t 2080d3b00c08SAlexander V. Chernikov table_get_count(struct ip_fw_chain *ch, struct table_config *tc) 2081d3b00c08SAlexander V. Chernikov { 2082d3b00c08SAlexander V. Chernikov struct table_info *ti; 2083d3b00c08SAlexander V. Chernikov struct table_algo *ta; 2084d3b00c08SAlexander V. Chernikov struct dump_args da; 2085d3b00c08SAlexander V. Chernikov 2086d3b00c08SAlexander V. Chernikov ti = KIDX_TO_TI(ch, tc->no.kidx); 2087d3b00c08SAlexander V. Chernikov ta = tc->ta; 2088d3b00c08SAlexander V. Chernikov 2089d3b00c08SAlexander V. Chernikov /* Use internal counter for self-managed tables */ 2090d3b00c08SAlexander V. Chernikov if ((ta->flags & TA_FLAG_READONLY) == 0) 2091d3b00c08SAlexander V. Chernikov return (tc->count); 2092d3b00c08SAlexander V. Chernikov 2093d3b00c08SAlexander V. Chernikov /* Use callback to quickly get number of items */ 2094d3b00c08SAlexander V. Chernikov if ((ta->flags & TA_FLAG_EXTCOUNTER) != 0) 2095d3b00c08SAlexander V. Chernikov return (ta->get_count(tc->astate, ti)); 2096d3b00c08SAlexander V. Chernikov 2097d3b00c08SAlexander V. Chernikov /* Count number of iterms ourselves */ 2098d3b00c08SAlexander V. Chernikov memset(&da, 0, sizeof(da)); 2099d3b00c08SAlexander V. Chernikov ta->foreach(tc->astate, ti, count_ext_entries, &da); 2100d3b00c08SAlexander V. Chernikov 2101d3b00c08SAlexander V. Chernikov return (da.cnt); 2102d3b00c08SAlexander V. Chernikov } 2103f99fbf96SAlexander V. Chernikov 2104f99fbf96SAlexander V. Chernikov /* 210535e1bbd0SAlexander V. Chernikov * Exports table @tc info into standard ipfw_xtable_info format. 210635e1bbd0SAlexander V. Chernikov */ 21079f7d47b0SAlexander V. Chernikov static void 2108ac35ff17SAlexander V. Chernikov export_table_info(struct ip_fw_chain *ch, struct table_config *tc, 2109ac35ff17SAlexander V. Chernikov ipfw_xtable_info *i) 21109f7d47b0SAlexander V. Chernikov { 2111ac35ff17SAlexander V. Chernikov struct table_info *ti; 21125f379342SAlexander V. Chernikov struct table_algo *ta; 21139f7d47b0SAlexander V. Chernikov 21149f7d47b0SAlexander V. Chernikov i->type = tc->no.type; 2115914bffb6SAlexander V. Chernikov i->tflags = tc->tflags; 21160cba2b28SAlexander V. Chernikov i->vmask = tc->vmask; 21179f7d47b0SAlexander V. Chernikov i->set = tc->no.set; 21189f7d47b0SAlexander V. Chernikov i->kidx = tc->no.kidx; 21199f7d47b0SAlexander V. Chernikov i->refcnt = tc->no.refcnt; 2120d3b00c08SAlexander V. Chernikov i->count = table_get_count(ch, tc); 21214c0c07a5SAlexander V. Chernikov i->limit = tc->limit; 21224f43138aSAlexander V. Chernikov i->flags |= (tc->locked != 0) ? IPFW_TGFLAGS_LOCKED : 0; 212381d3153dSAlexander V. Chernikov i->size = tc->count * sizeof(ipfw_obj_tentry); 2124f1220db8SAlexander V. Chernikov i->size += sizeof(ipfw_obj_header) + sizeof(ipfw_xtable_info); 21259f7d47b0SAlexander V. Chernikov strlcpy(i->tablename, tc->tablename, sizeof(i->tablename)); 2126ac35ff17SAlexander V. Chernikov ti = KIDX_TO_TI(ch, tc->no.kidx); 21275f379342SAlexander V. Chernikov ta = tc->ta; 21285f379342SAlexander V. Chernikov if (ta->print_config != NULL) { 21295f379342SAlexander V. Chernikov /* Use algo function to print table config to string */ 21305f379342SAlexander V. Chernikov ta->print_config(tc->astate, ti, i->algoname, 2131ac35ff17SAlexander V. Chernikov sizeof(i->algoname)); 2132ac35ff17SAlexander V. Chernikov } else 21335f379342SAlexander V. Chernikov strlcpy(i->algoname, ta->name, sizeof(i->algoname)); 21345f379342SAlexander V. Chernikov /* Dump algo-specific data, if possible */ 21355f379342SAlexander V. Chernikov if (ta->dump_tinfo != NULL) { 21365f379342SAlexander V. Chernikov ta->dump_tinfo(tc->astate, ti, &i->ta_info); 21375f379342SAlexander V. Chernikov i->ta_info.flags |= IPFW_TATFLAGS_DATA; 21385f379342SAlexander V. Chernikov } 21399f7d47b0SAlexander V. Chernikov } 21409f7d47b0SAlexander V. Chernikov 2141ac35ff17SAlexander V. Chernikov struct dump_table_args { 2142ac35ff17SAlexander V. Chernikov struct ip_fw_chain *ch; 2143ac35ff17SAlexander V. Chernikov struct sockopt_data *sd; 2144ac35ff17SAlexander V. Chernikov }; 2145ac35ff17SAlexander V. Chernikov 21469f7d47b0SAlexander V. Chernikov static void 21479f7d47b0SAlexander V. Chernikov export_table_internal(struct namedobj_instance *ni, struct named_object *no, 21489f7d47b0SAlexander V. Chernikov void *arg) 21493b3a8eb9SGleb Smirnoff { 21509f7d47b0SAlexander V. Chernikov ipfw_xtable_info *i; 2151ac35ff17SAlexander V. Chernikov struct dump_table_args *dta; 21523b3a8eb9SGleb Smirnoff 2153ac35ff17SAlexander V. Chernikov dta = (struct dump_table_args *)arg; 2154ac35ff17SAlexander V. Chernikov 2155ac35ff17SAlexander V. Chernikov i = (ipfw_xtable_info *)ipfw_get_sopt_space(dta->sd, sizeof(*i)); 215668394ec8SAlexander V. Chernikov KASSERT(i != 0, ("previously checked buffer is not enough")); 21579f7d47b0SAlexander V. Chernikov 2158ac35ff17SAlexander V. Chernikov export_table_info(dta->ch, (struct table_config *)no, i); 21599f7d47b0SAlexander V. Chernikov } 21609f7d47b0SAlexander V. Chernikov 2161f1220db8SAlexander V. Chernikov /* 2162f1220db8SAlexander V. Chernikov * Export all tables as ipfw_xtable_info structures to 21632d99a349SAlexander V. Chernikov * storage provided by @sd. 216428ea4fa3SAlexander V. Chernikov * 216528ea4fa3SAlexander V. Chernikov * If supplied buffer is too small, fills in required size 216628ea4fa3SAlexander V. Chernikov * and returns ENOMEM. 2167f1220db8SAlexander V. Chernikov * Returns 0 on success. 2168f1220db8SAlexander V. Chernikov */ 2169f1220db8SAlexander V. Chernikov static int 21702d99a349SAlexander V. Chernikov export_tables(struct ip_fw_chain *ch, ipfw_obj_lheader *olh, 21712d99a349SAlexander V. Chernikov struct sockopt_data *sd) 21729f7d47b0SAlexander V. Chernikov { 21739f7d47b0SAlexander V. Chernikov uint32_t size; 21749f7d47b0SAlexander V. Chernikov uint32_t count; 2175ac35ff17SAlexander V. Chernikov struct dump_table_args dta; 21769f7d47b0SAlexander V. Chernikov 21779f7d47b0SAlexander V. Chernikov count = ipfw_objhash_count(CHAIN_TO_NI(ch)); 21789f7d47b0SAlexander V. Chernikov size = count * sizeof(ipfw_xtable_info) + sizeof(ipfw_obj_lheader); 21792d99a349SAlexander V. Chernikov 21802d99a349SAlexander V. Chernikov /* Fill in header regadless of buffer size */ 2181f1220db8SAlexander V. Chernikov olh->count = count; 2182f1220db8SAlexander V. Chernikov olh->objsize = sizeof(ipfw_xtable_info); 21832d99a349SAlexander V. Chernikov 21842d99a349SAlexander V. Chernikov if (size > olh->size) { 21852d99a349SAlexander V. Chernikov olh->size = size; 21869f7d47b0SAlexander V. Chernikov return (ENOMEM); 2187f1220db8SAlexander V. Chernikov } 218868394ec8SAlexander V. Chernikov 21899f7d47b0SAlexander V. Chernikov olh->size = size; 21902d99a349SAlexander V. Chernikov 2191ac35ff17SAlexander V. Chernikov dta.ch = ch; 2192ac35ff17SAlexander V. Chernikov dta.sd = sd; 2193ac35ff17SAlexander V. Chernikov 2194ac35ff17SAlexander V. Chernikov ipfw_objhash_foreach(CHAIN_TO_NI(ch), export_table_internal, &dta); 21959f7d47b0SAlexander V. Chernikov 21963b3a8eb9SGleb Smirnoff return (0); 21973b3a8eb9SGleb Smirnoff } 21983b3a8eb9SGleb Smirnoff 2199f99fbf96SAlexander V. Chernikov /* 2200f99fbf96SAlexander V. Chernikov * Dumps all table data 2201f99fbf96SAlexander V. Chernikov * Data layout (v1)(current): 2202f99fbf96SAlexander V. Chernikov * Request: [ ipfw_obj_header ], size = ipfw_xtable_info.size 2203f99fbf96SAlexander V. Chernikov * Reply: [ ipfw_obj_header ipfw_xtable_info ipfw_obj_tentry x N ] 2204f99fbf96SAlexander V. Chernikov * 2205f99fbf96SAlexander V. Chernikov * Returns 0 on success 2206f99fbf96SAlexander V. Chernikov */ 2207f99fbf96SAlexander V. Chernikov static int 22086b988f3aSAlexander V. Chernikov dump_table_v1(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 22096b988f3aSAlexander V. Chernikov struct sockopt_data *sd) 2210f99fbf96SAlexander V. Chernikov { 2211f99fbf96SAlexander V. Chernikov struct _ipfw_obj_header *oh; 2212f99fbf96SAlexander V. Chernikov ipfw_xtable_info *i; 2213f99fbf96SAlexander V. Chernikov struct tid_info ti; 2214f99fbf96SAlexander V. Chernikov struct table_config *tc; 2215f99fbf96SAlexander V. Chernikov struct table_algo *ta; 2216f99fbf96SAlexander V. Chernikov struct dump_args da; 2217f99fbf96SAlexander V. Chernikov uint32_t sz; 2218f99fbf96SAlexander V. Chernikov 2219f99fbf96SAlexander V. Chernikov sz = sizeof(ipfw_obj_header) + sizeof(ipfw_xtable_info); 2220f99fbf96SAlexander V. Chernikov oh = (struct _ipfw_obj_header *)ipfw_get_sopt_header(sd, sz); 2221f99fbf96SAlexander V. Chernikov if (oh == NULL) 2222f99fbf96SAlexander V. Chernikov return (EINVAL); 2223f99fbf96SAlexander V. Chernikov 2224f99fbf96SAlexander V. Chernikov i = (ipfw_xtable_info *)(oh + 1); 2225f99fbf96SAlexander V. Chernikov objheader_to_ti(oh, &ti); 2226f99fbf96SAlexander V. Chernikov 2227f99fbf96SAlexander V. Chernikov IPFW_UH_RLOCK(ch); 2228f99fbf96SAlexander V. Chernikov if ((tc = find_table(CHAIN_TO_NI(ch), &ti)) == NULL) { 2229f99fbf96SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 2230f99fbf96SAlexander V. Chernikov return (ESRCH); 2231f99fbf96SAlexander V. Chernikov } 2232f99fbf96SAlexander V. Chernikov export_table_info(ch, tc, i); 2233f99fbf96SAlexander V. Chernikov 2234f99fbf96SAlexander V. Chernikov if (sd->valsize < i->size) { 2235f99fbf96SAlexander V. Chernikov 2236f99fbf96SAlexander V. Chernikov /* 2237f99fbf96SAlexander V. Chernikov * Submitted buffer size is not enough. 2238f99fbf96SAlexander V. Chernikov * WE've already filled in @i structure with 2239f99fbf96SAlexander V. Chernikov * relevant table info including size, so we 2240f99fbf96SAlexander V. Chernikov * can return. Buffer will be flushed automatically. 2241f99fbf96SAlexander V. Chernikov */ 2242f99fbf96SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 2243f99fbf96SAlexander V. Chernikov return (ENOMEM); 2244f99fbf96SAlexander V. Chernikov } 2245f99fbf96SAlexander V. Chernikov 2246f99fbf96SAlexander V. Chernikov /* 2247f99fbf96SAlexander V. Chernikov * Do the actual dump in eXtended format 2248f99fbf96SAlexander V. Chernikov */ 2249f99fbf96SAlexander V. Chernikov memset(&da, 0, sizeof(da)); 22500cba2b28SAlexander V. Chernikov da.ch = ch; 2251f99fbf96SAlexander V. Chernikov da.ti = KIDX_TO_TI(ch, tc->no.kidx); 2252f99fbf96SAlexander V. Chernikov da.tc = tc; 2253f99fbf96SAlexander V. Chernikov da.sd = sd; 2254f99fbf96SAlexander V. Chernikov 2255f99fbf96SAlexander V. Chernikov ta = tc->ta; 2256f99fbf96SAlexander V. Chernikov 2257f99fbf96SAlexander V. Chernikov ta->foreach(tc->astate, da.ti, dump_table_tentry, &da); 2258f99fbf96SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 2259f99fbf96SAlexander V. Chernikov 2260f99fbf96SAlexander V. Chernikov return (da.error); 2261f99fbf96SAlexander V. Chernikov } 2262f99fbf96SAlexander V. Chernikov 2263f99fbf96SAlexander V. Chernikov /* 2264f99fbf96SAlexander V. Chernikov * Dumps all table data 2265f99fbf96SAlexander V. Chernikov * Data layout (version 0)(legacy): 2266f99fbf96SAlexander V. Chernikov * Request: [ ipfw_xtable ], size = IP_FW_TABLE_XGETSIZE() 2267f99fbf96SAlexander V. Chernikov * Reply: [ ipfw_xtable ipfw_table_xentry x N ] 2268f99fbf96SAlexander V. Chernikov * 2269f99fbf96SAlexander V. Chernikov * Returns 0 on success 2270f99fbf96SAlexander V. Chernikov */ 2271f99fbf96SAlexander V. Chernikov static int 22726b988f3aSAlexander V. Chernikov dump_table_v0(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 22736b988f3aSAlexander V. Chernikov struct sockopt_data *sd) 2274f99fbf96SAlexander V. Chernikov { 2275f99fbf96SAlexander V. Chernikov ipfw_xtable *xtbl; 2276f99fbf96SAlexander V. Chernikov struct tid_info ti; 2277f99fbf96SAlexander V. Chernikov struct table_config *tc; 2278f99fbf96SAlexander V. Chernikov struct table_algo *ta; 2279f99fbf96SAlexander V. Chernikov struct dump_args da; 2280d3b00c08SAlexander V. Chernikov size_t sz, count; 2281f99fbf96SAlexander V. Chernikov 2282f99fbf96SAlexander V. Chernikov xtbl = (ipfw_xtable *)ipfw_get_sopt_header(sd, sizeof(ipfw_xtable)); 2283f99fbf96SAlexander V. Chernikov if (xtbl == NULL) 2284f99fbf96SAlexander V. Chernikov return (EINVAL); 2285f99fbf96SAlexander V. Chernikov 2286f99fbf96SAlexander V. Chernikov memset(&ti, 0, sizeof(ti)); 2287f99fbf96SAlexander V. Chernikov ti.uidx = xtbl->tbl; 2288f99fbf96SAlexander V. Chernikov 2289f99fbf96SAlexander V. Chernikov IPFW_UH_RLOCK(ch); 2290f99fbf96SAlexander V. Chernikov if ((tc = find_table(CHAIN_TO_NI(ch), &ti)) == NULL) { 2291f99fbf96SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 2292f99fbf96SAlexander V. Chernikov return (0); 2293f99fbf96SAlexander V. Chernikov } 2294d3b00c08SAlexander V. Chernikov count = table_get_count(ch, tc); 2295d3b00c08SAlexander V. Chernikov sz = count * sizeof(ipfw_table_xentry) + sizeof(ipfw_xtable); 2296f99fbf96SAlexander V. Chernikov 2297d3b00c08SAlexander V. Chernikov xtbl->cnt = count; 2298f99fbf96SAlexander V. Chernikov xtbl->size = sz; 2299f99fbf96SAlexander V. Chernikov xtbl->type = tc->no.type; 2300f99fbf96SAlexander V. Chernikov xtbl->tbl = ti.uidx; 2301f99fbf96SAlexander V. Chernikov 2302f99fbf96SAlexander V. Chernikov if (sd->valsize < sz) { 2303f99fbf96SAlexander V. Chernikov 2304f99fbf96SAlexander V. Chernikov /* 2305f99fbf96SAlexander V. Chernikov * Submitted buffer size is not enough. 2306f99fbf96SAlexander V. Chernikov * WE've already filled in @i structure with 2307f99fbf96SAlexander V. Chernikov * relevant table info including size, so we 2308f99fbf96SAlexander V. Chernikov * can return. Buffer will be flushed automatically. 2309f99fbf96SAlexander V. Chernikov */ 2310f99fbf96SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 2311f99fbf96SAlexander V. Chernikov return (ENOMEM); 2312f99fbf96SAlexander V. Chernikov } 2313f99fbf96SAlexander V. Chernikov 2314f99fbf96SAlexander V. Chernikov /* Do the actual dump in eXtended format */ 2315f99fbf96SAlexander V. Chernikov memset(&da, 0, sizeof(da)); 23160cba2b28SAlexander V. Chernikov da.ch = ch; 2317f99fbf96SAlexander V. Chernikov da.ti = KIDX_TO_TI(ch, tc->no.kidx); 2318f99fbf96SAlexander V. Chernikov da.tc = tc; 2319f99fbf96SAlexander V. Chernikov da.sd = sd; 2320f99fbf96SAlexander V. Chernikov 2321f99fbf96SAlexander V. Chernikov ta = tc->ta; 2322f99fbf96SAlexander V. Chernikov 2323f99fbf96SAlexander V. Chernikov ta->foreach(tc->astate, da.ti, dump_table_xentry, &da); 2324f99fbf96SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 2325f99fbf96SAlexander V. Chernikov 2326f99fbf96SAlexander V. Chernikov return (0); 2327f99fbf96SAlexander V. Chernikov } 2328f99fbf96SAlexander V. Chernikov 232981d3153dSAlexander V. Chernikov /* 2330e822d936SAlexander V. Chernikov * Legacy function to retrieve number of items in table. 2331e822d936SAlexander V. Chernikov */ 23326b988f3aSAlexander V. Chernikov static int 23336b988f3aSAlexander V. Chernikov get_table_size(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 2334e822d936SAlexander V. Chernikov struct sockopt_data *sd) 2335e822d936SAlexander V. Chernikov { 2336e822d936SAlexander V. Chernikov uint32_t *tbl; 2337e822d936SAlexander V. Chernikov struct tid_info ti; 2338e822d936SAlexander V. Chernikov size_t sz; 2339e822d936SAlexander V. Chernikov int error; 2340e822d936SAlexander V. Chernikov 2341e822d936SAlexander V. Chernikov sz = sizeof(*op3) + sizeof(uint32_t); 2342e822d936SAlexander V. Chernikov op3 = (ip_fw3_opheader *)ipfw_get_sopt_header(sd, sz); 2343e822d936SAlexander V. Chernikov if (op3 == NULL) 2344e822d936SAlexander V. Chernikov return (EINVAL); 2345e822d936SAlexander V. Chernikov 2346e822d936SAlexander V. Chernikov tbl = (uint32_t *)(op3 + 1); 2347e822d936SAlexander V. Chernikov memset(&ti, 0, sizeof(ti)); 2348e822d936SAlexander V. Chernikov ti.uidx = *tbl; 2349e822d936SAlexander V. Chernikov IPFW_UH_RLOCK(ch); 2350e822d936SAlexander V. Chernikov error = ipfw_count_xtable(ch, &ti, tbl); 2351e822d936SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 2352e822d936SAlexander V. Chernikov return (error); 2353e822d936SAlexander V. Chernikov } 2354e822d936SAlexander V. Chernikov 2355e822d936SAlexander V. Chernikov /* 235681d3153dSAlexander V. Chernikov * Legacy IP_FW_TABLE_GETSIZE handler 235781d3153dSAlexander V. Chernikov */ 23583b3a8eb9SGleb Smirnoff int 2359b074b7bbSAlexander V. Chernikov ipfw_count_table(struct ip_fw_chain *ch, struct tid_info *ti, uint32_t *cnt) 23603b3a8eb9SGleb Smirnoff { 2361b074b7bbSAlexander V. Chernikov struct table_config *tc; 23623b3a8eb9SGleb Smirnoff 2363b074b7bbSAlexander V. Chernikov if ((tc = find_table(CHAIN_TO_NI(ch), ti)) == NULL) 2364b074b7bbSAlexander V. Chernikov return (ESRCH); 2365d3b00c08SAlexander V. Chernikov *cnt = table_get_count(ch, tc); 23663b3a8eb9SGleb Smirnoff return (0); 23673b3a8eb9SGleb Smirnoff } 23683b3a8eb9SGleb Smirnoff 236981d3153dSAlexander V. Chernikov /* 237081d3153dSAlexander V. Chernikov * Legacy IP_FW_TABLE_XGETSIZE handler 237181d3153dSAlexander V. Chernikov */ 23729f7d47b0SAlexander V. Chernikov int 23739f7d47b0SAlexander V. Chernikov ipfw_count_xtable(struct ip_fw_chain *ch, struct tid_info *ti, uint32_t *cnt) 23743b3a8eb9SGleb Smirnoff { 23759f7d47b0SAlexander V. Chernikov struct table_config *tc; 2376d3b00c08SAlexander V. Chernikov uint32_t count; 23779f7d47b0SAlexander V. Chernikov 2378d3a4f924SAlexander V. Chernikov if ((tc = find_table(CHAIN_TO_NI(ch), ti)) == NULL) { 2379d3a4f924SAlexander V. Chernikov *cnt = 0; 23809f7d47b0SAlexander V. Chernikov return (0); /* 'table all list' requires success */ 2381d3a4f924SAlexander V. Chernikov } 2382d3b00c08SAlexander V. Chernikov 2383d3b00c08SAlexander V. Chernikov count = table_get_count(ch, tc); 2384d3b00c08SAlexander V. Chernikov *cnt = count * sizeof(ipfw_table_xentry); 2385d3b00c08SAlexander V. Chernikov if (count > 0) 23869f7d47b0SAlexander V. Chernikov *cnt += sizeof(ipfw_xtable); 23879f7d47b0SAlexander V. Chernikov return (0); 23889f7d47b0SAlexander V. Chernikov } 23899f7d47b0SAlexander V. Chernikov 23909f7d47b0SAlexander V. Chernikov static int 23919f7d47b0SAlexander V. Chernikov dump_table_entry(void *e, void *arg) 23929f7d47b0SAlexander V. Chernikov { 23939f7d47b0SAlexander V. Chernikov struct dump_args *da; 23949f7d47b0SAlexander V. Chernikov struct table_config *tc; 23959f7d47b0SAlexander V. Chernikov struct table_algo *ta; 23963b3a8eb9SGleb Smirnoff ipfw_table_entry *ent; 23970cba2b28SAlexander V. Chernikov struct table_value *pval; 239881d3153dSAlexander V. Chernikov int error; 23993b3a8eb9SGleb Smirnoff 24009f7d47b0SAlexander V. Chernikov da = (struct dump_args *)arg; 24019f7d47b0SAlexander V. Chernikov 24029f7d47b0SAlexander V. Chernikov tc = da->tc; 24039f7d47b0SAlexander V. Chernikov ta = tc->ta; 24049f7d47b0SAlexander V. Chernikov 24059f7d47b0SAlexander V. Chernikov /* Out of memory, returning */ 2406f1220db8SAlexander V. Chernikov if (da->cnt == da->size) 24073b3a8eb9SGleb Smirnoff return (1); 2408f1220db8SAlexander V. Chernikov ent = da->ent++; 2409f1220db8SAlexander V. Chernikov ent->tbl = da->uidx; 2410f1220db8SAlexander V. Chernikov da->cnt++; 24119f7d47b0SAlexander V. Chernikov 241281d3153dSAlexander V. Chernikov error = ta->dump_tentry(tc->astate, da->ti, e, &da->tent); 241381d3153dSAlexander V. Chernikov if (error != 0) 241481d3153dSAlexander V. Chernikov return (error); 241581d3153dSAlexander V. Chernikov 241681d3153dSAlexander V. Chernikov ent->addr = da->tent.k.addr.s_addr; 241781d3153dSAlexander V. Chernikov ent->masklen = da->tent.masklen; 24180cba2b28SAlexander V. Chernikov pval = get_table_value(da->ch, da->tc, da->tent.v.kidx); 24190cba2b28SAlexander V. Chernikov ent->value = ipfw_export_table_value_legacy(pval); 242081d3153dSAlexander V. Chernikov 242181d3153dSAlexander V. Chernikov return (0); 24223b3a8eb9SGleb Smirnoff } 24233b3a8eb9SGleb Smirnoff 2424f1220db8SAlexander V. Chernikov /* 2425f1220db8SAlexander V. Chernikov * Dumps table in pre-8.1 legacy format. 2426f1220db8SAlexander V. Chernikov */ 24273b3a8eb9SGleb Smirnoff int 2428f1220db8SAlexander V. Chernikov ipfw_dump_table_legacy(struct ip_fw_chain *ch, struct tid_info *ti, 2429f1220db8SAlexander V. Chernikov ipfw_table *tbl) 24303b3a8eb9SGleb Smirnoff { 2431b074b7bbSAlexander V. Chernikov struct table_config *tc; 24329f7d47b0SAlexander V. Chernikov struct table_algo *ta; 24339f7d47b0SAlexander V. Chernikov struct dump_args da; 24343b3a8eb9SGleb Smirnoff 24353b3a8eb9SGleb Smirnoff tbl->cnt = 0; 24363b3a8eb9SGleb Smirnoff 2437b074b7bbSAlexander V. Chernikov if ((tc = find_table(CHAIN_TO_NI(ch), ti)) == NULL) 2438b074b7bbSAlexander V. Chernikov return (0); /* XXX: We should return ESRCH */ 24399f7d47b0SAlexander V. Chernikov 24409f7d47b0SAlexander V. Chernikov ta = tc->ta; 24419f7d47b0SAlexander V. Chernikov 244281d3153dSAlexander V. Chernikov /* This dump format supports IPv4 only */ 2443c21034b7SAlexander V. Chernikov if (tc->no.type != IPFW_TABLE_ADDR) 244481d3153dSAlexander V. Chernikov return (0); 24459f7d47b0SAlexander V. Chernikov 2446d3a4f924SAlexander V. Chernikov memset(&da, 0, sizeof(da)); 24470cba2b28SAlexander V. Chernikov da.ch = ch; 24489f7d47b0SAlexander V. Chernikov da.ti = KIDX_TO_TI(ch, tc->no.kidx); 24499f7d47b0SAlexander V. Chernikov da.tc = tc; 2450f1220db8SAlexander V. Chernikov da.ent = &tbl->ent[0]; 2451f1220db8SAlexander V. Chernikov da.size = tbl->size; 24529f7d47b0SAlexander V. Chernikov 24539f7d47b0SAlexander V. Chernikov tbl->cnt = 0; 24549f7d47b0SAlexander V. Chernikov ta->foreach(tc->astate, da.ti, dump_table_entry, &da); 2455f1220db8SAlexander V. Chernikov tbl->cnt = da.cnt; 24569f7d47b0SAlexander V. Chernikov 24573b3a8eb9SGleb Smirnoff return (0); 24583b3a8eb9SGleb Smirnoff } 24593b3a8eb9SGleb Smirnoff 24609490a627SAlexander V. Chernikov /* 246181d3153dSAlexander V. Chernikov * Dumps table entry in eXtended format (v1)(current). 246281d3153dSAlexander V. Chernikov */ 246381d3153dSAlexander V. Chernikov static int 246481d3153dSAlexander V. Chernikov dump_table_tentry(void *e, void *arg) 246581d3153dSAlexander V. Chernikov { 246681d3153dSAlexander V. Chernikov struct dump_args *da; 246781d3153dSAlexander V. Chernikov struct table_config *tc; 246881d3153dSAlexander V. Chernikov struct table_algo *ta; 24690cba2b28SAlexander V. Chernikov struct table_value *pval; 247081d3153dSAlexander V. Chernikov ipfw_obj_tentry *tent; 24710cba2b28SAlexander V. Chernikov int error; 247281d3153dSAlexander V. Chernikov 247381d3153dSAlexander V. Chernikov da = (struct dump_args *)arg; 247481d3153dSAlexander V. Chernikov 247581d3153dSAlexander V. Chernikov tc = da->tc; 247681d3153dSAlexander V. Chernikov ta = tc->ta; 247781d3153dSAlexander V. Chernikov 247881d3153dSAlexander V. Chernikov tent = (ipfw_obj_tentry *)ipfw_get_sopt_space(da->sd, sizeof(*tent)); 247981d3153dSAlexander V. Chernikov /* Out of memory, returning */ 248081d3153dSAlexander V. Chernikov if (tent == NULL) { 248181d3153dSAlexander V. Chernikov da->error = ENOMEM; 248281d3153dSAlexander V. Chernikov return (1); 248381d3153dSAlexander V. Chernikov } 248481d3153dSAlexander V. Chernikov tent->head.length = sizeof(ipfw_obj_tentry); 248581d3153dSAlexander V. Chernikov tent->idx = da->uidx; 248681d3153dSAlexander V. Chernikov 24870cba2b28SAlexander V. Chernikov error = ta->dump_tentry(tc->astate, da->ti, e, tent); 24880cba2b28SAlexander V. Chernikov if (error != 0) 24890cba2b28SAlexander V. Chernikov return (error); 24900cba2b28SAlexander V. Chernikov 24910cba2b28SAlexander V. Chernikov pval = get_table_value(da->ch, da->tc, tent->v.kidx); 24920cba2b28SAlexander V. Chernikov ipfw_export_table_value_v1(pval, &tent->v.value); 24930cba2b28SAlexander V. Chernikov 24940cba2b28SAlexander V. Chernikov return (0); 249581d3153dSAlexander V. Chernikov } 249681d3153dSAlexander V. Chernikov 249781d3153dSAlexander V. Chernikov /* 249881d3153dSAlexander V. Chernikov * Dumps table entry in eXtended format (v0). 24999490a627SAlexander V. Chernikov */ 25003b3a8eb9SGleb Smirnoff static int 25019f7d47b0SAlexander V. Chernikov dump_table_xentry(void *e, void *arg) 25023b3a8eb9SGleb Smirnoff { 25039f7d47b0SAlexander V. Chernikov struct dump_args *da; 25049f7d47b0SAlexander V. Chernikov struct table_config *tc; 25059f7d47b0SAlexander V. Chernikov struct table_algo *ta; 25063b3a8eb9SGleb Smirnoff ipfw_table_xentry *xent; 250781d3153dSAlexander V. Chernikov ipfw_obj_tentry *tent; 25080cba2b28SAlexander V. Chernikov struct table_value *pval; 250981d3153dSAlexander V. Chernikov int error; 25103b3a8eb9SGleb Smirnoff 25119f7d47b0SAlexander V. Chernikov da = (struct dump_args *)arg; 25129f7d47b0SAlexander V. Chernikov 25139f7d47b0SAlexander V. Chernikov tc = da->tc; 25149f7d47b0SAlexander V. Chernikov ta = tc->ta; 25159f7d47b0SAlexander V. Chernikov 25162d99a349SAlexander V. Chernikov xent = (ipfw_table_xentry *)ipfw_get_sopt_space(da->sd, sizeof(*xent)); 25173b3a8eb9SGleb Smirnoff /* Out of memory, returning */ 25182d99a349SAlexander V. Chernikov if (xent == NULL) 25193b3a8eb9SGleb Smirnoff return (1); 25203b3a8eb9SGleb Smirnoff xent->len = sizeof(ipfw_table_xentry); 2521f1220db8SAlexander V. Chernikov xent->tbl = da->uidx; 25229f7d47b0SAlexander V. Chernikov 252381d3153dSAlexander V. Chernikov memset(&da->tent, 0, sizeof(da->tent)); 252481d3153dSAlexander V. Chernikov tent = &da->tent; 252581d3153dSAlexander V. Chernikov error = ta->dump_tentry(tc->astate, da->ti, e, tent); 252681d3153dSAlexander V. Chernikov if (error != 0) 252781d3153dSAlexander V. Chernikov return (error); 252881d3153dSAlexander V. Chernikov 252981d3153dSAlexander V. Chernikov /* Convert current format to previous one */ 253081d3153dSAlexander V. Chernikov xent->masklen = tent->masklen; 25310cba2b28SAlexander V. Chernikov pval = get_table_value(da->ch, da->tc, da->tent.v.kidx); 25320cba2b28SAlexander V. Chernikov xent->value = ipfw_export_table_value_legacy(pval); 253381d3153dSAlexander V. Chernikov /* Apply some hacks */ 2534c21034b7SAlexander V. Chernikov if (tc->no.type == IPFW_TABLE_ADDR && tent->subtype == AF_INET) { 253581d3153dSAlexander V. Chernikov xent->k.addr6.s6_addr32[3] = tent->k.addr.s_addr; 253681d3153dSAlexander V. Chernikov xent->flags = IPFW_TCF_INET; 253781d3153dSAlexander V. Chernikov } else 253881d3153dSAlexander V. Chernikov memcpy(&xent->k, &tent->k, sizeof(xent->k)); 253981d3153dSAlexander V. Chernikov 254081d3153dSAlexander V. Chernikov return (0); 25419f7d47b0SAlexander V. Chernikov } 25429f7d47b0SAlexander V. Chernikov 25439f7d47b0SAlexander V. Chernikov /* 25444dff4ae0SAlexander V. Chernikov * Helper function to export table algo data 25454dff4ae0SAlexander V. Chernikov * to tentry format before calling user function. 25464dff4ae0SAlexander V. Chernikov * 25474dff4ae0SAlexander V. Chernikov * Returns 0 on success. 25484dff4ae0SAlexander V. Chernikov */ 25494dff4ae0SAlexander V. Chernikov static int 25504dff4ae0SAlexander V. Chernikov prepare_table_tentry(void *e, void *arg) 25514dff4ae0SAlexander V. Chernikov { 25524dff4ae0SAlexander V. Chernikov struct dump_args *da; 25534dff4ae0SAlexander V. Chernikov struct table_config *tc; 25544dff4ae0SAlexander V. Chernikov struct table_algo *ta; 25554dff4ae0SAlexander V. Chernikov int error; 25564dff4ae0SAlexander V. Chernikov 25574dff4ae0SAlexander V. Chernikov da = (struct dump_args *)arg; 25584dff4ae0SAlexander V. Chernikov 25594dff4ae0SAlexander V. Chernikov tc = da->tc; 25604dff4ae0SAlexander V. Chernikov ta = tc->ta; 25614dff4ae0SAlexander V. Chernikov 25624dff4ae0SAlexander V. Chernikov error = ta->dump_tentry(tc->astate, da->ti, e, &da->tent); 25634dff4ae0SAlexander V. Chernikov if (error != 0) 25644dff4ae0SAlexander V. Chernikov return (error); 25654dff4ae0SAlexander V. Chernikov 25664dff4ae0SAlexander V. Chernikov da->f(&da->tent, da->farg); 25674dff4ae0SAlexander V. Chernikov 25684dff4ae0SAlexander V. Chernikov return (0); 25694dff4ae0SAlexander V. Chernikov } 25704dff4ae0SAlexander V. Chernikov 25714dff4ae0SAlexander V. Chernikov /* 25724dff4ae0SAlexander V. Chernikov * Allow external consumers to read table entries in standard format. 25734dff4ae0SAlexander V. Chernikov */ 25744dff4ae0SAlexander V. Chernikov int 25754dff4ae0SAlexander V. Chernikov ipfw_foreach_table_tentry(struct ip_fw_chain *ch, uint16_t kidx, 25764dff4ae0SAlexander V. Chernikov ta_foreach_f *f, void *arg) 25774dff4ae0SAlexander V. Chernikov { 25784dff4ae0SAlexander V. Chernikov struct namedobj_instance *ni; 25794dff4ae0SAlexander V. Chernikov struct table_config *tc; 25804dff4ae0SAlexander V. Chernikov struct table_algo *ta; 25814dff4ae0SAlexander V. Chernikov struct dump_args da; 25824dff4ae0SAlexander V. Chernikov 25834dff4ae0SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 25844dff4ae0SAlexander V. Chernikov 25854dff4ae0SAlexander V. Chernikov tc = (struct table_config *)ipfw_objhash_lookup_kidx(ni, kidx); 25864dff4ae0SAlexander V. Chernikov if (tc == NULL) 25874dff4ae0SAlexander V. Chernikov return (ESRCH); 25884dff4ae0SAlexander V. Chernikov 25894dff4ae0SAlexander V. Chernikov ta = tc->ta; 25904dff4ae0SAlexander V. Chernikov 25914dff4ae0SAlexander V. Chernikov memset(&da, 0, sizeof(da)); 25920cba2b28SAlexander V. Chernikov da.ch = ch; 25934dff4ae0SAlexander V. Chernikov da.ti = KIDX_TO_TI(ch, tc->no.kidx); 25944dff4ae0SAlexander V. Chernikov da.tc = tc; 25954dff4ae0SAlexander V. Chernikov da.f = f; 25964dff4ae0SAlexander V. Chernikov da.farg = arg; 25974dff4ae0SAlexander V. Chernikov 25984dff4ae0SAlexander V. Chernikov ta->foreach(tc->astate, da.ti, prepare_table_tentry, &da); 25994dff4ae0SAlexander V. Chernikov 26004dff4ae0SAlexander V. Chernikov return (0); 26014dff4ae0SAlexander V. Chernikov } 26024dff4ae0SAlexander V. Chernikov 26034dff4ae0SAlexander V. Chernikov /* 26049f7d47b0SAlexander V. Chernikov * Table algorithms 26059f7d47b0SAlexander V. Chernikov */ 26063b3a8eb9SGleb Smirnoff 26079f7d47b0SAlexander V. Chernikov /* 260835e1bbd0SAlexander V. Chernikov * Finds algoritm by index, table type or supplied name. 260935e1bbd0SAlexander V. Chernikov * 261035e1bbd0SAlexander V. Chernikov * Returns pointer to algo or NULL. 26119f7d47b0SAlexander V. Chernikov */ 26129f7d47b0SAlexander V. Chernikov static struct table_algo * 26139490a627SAlexander V. Chernikov find_table_algo(struct tables_config *tcfg, struct tid_info *ti, char *name) 26149f7d47b0SAlexander V. Chernikov { 26159490a627SAlexander V. Chernikov int i, l; 26169490a627SAlexander V. Chernikov struct table_algo *ta; 26179f7d47b0SAlexander V. Chernikov 261857a1cf95SAlexander V. Chernikov if (ti->type > IPFW_TABLE_MAXTYPE) 261957a1cf95SAlexander V. Chernikov return (NULL); 262057a1cf95SAlexander V. Chernikov 26219f7d47b0SAlexander V. Chernikov /* Search by index */ 26229f7d47b0SAlexander V. Chernikov if (ti->atype != 0) { 26239f7d47b0SAlexander V. Chernikov if (ti->atype > tcfg->algo_count) 26249f7d47b0SAlexander V. Chernikov return (NULL); 26259f7d47b0SAlexander V. Chernikov return (tcfg->algo[ti->atype]); 26269f7d47b0SAlexander V. Chernikov } 26279f7d47b0SAlexander V. Chernikov 2628fd0869d5SAlexander V. Chernikov if (name == NULL) { 2629fd0869d5SAlexander V. Chernikov /* Return default algorithm for given type if set */ 2630fd0869d5SAlexander V. Chernikov return (tcfg->def_algo[ti->type]); 2631fd0869d5SAlexander V. Chernikov } 2632fd0869d5SAlexander V. Chernikov 2633fd0869d5SAlexander V. Chernikov /* Search by name */ 26349490a627SAlexander V. Chernikov /* TODO: better search */ 26359490a627SAlexander V. Chernikov for (i = 1; i <= tcfg->algo_count; i++) { 26369490a627SAlexander V. Chernikov ta = tcfg->algo[i]; 26379490a627SAlexander V. Chernikov 26389490a627SAlexander V. Chernikov /* 26399490a627SAlexander V. Chernikov * One can supply additional algorithm 26409490a627SAlexander V. Chernikov * parameters so we compare only the first word 26419490a627SAlexander V. Chernikov * of supplied name: 2642c21034b7SAlexander V. Chernikov * 'addr:chash hsize=32' 26439490a627SAlexander V. Chernikov * '^^^^^^^^^' 26449490a627SAlexander V. Chernikov * 26459490a627SAlexander V. Chernikov */ 26469490a627SAlexander V. Chernikov l = strlen(ta->name); 2647fd0869d5SAlexander V. Chernikov if (strncmp(name, ta->name, l) != 0) 2648fd0869d5SAlexander V. Chernikov continue; 2649fd0869d5SAlexander V. Chernikov if (name[l] != '\0' && name[l] != ' ') 2650fd0869d5SAlexander V. Chernikov continue; 2651fd0869d5SAlexander V. Chernikov /* Check if we're requesting proper table type */ 2652fd0869d5SAlexander V. Chernikov if (ti->type != 0 && ti->type != ta->type) 2653fd0869d5SAlexander V. Chernikov return (NULL); 26549490a627SAlexander V. Chernikov return (ta); 26559490a627SAlexander V. Chernikov } 26569490a627SAlexander V. Chernikov 26579490a627SAlexander V. Chernikov return (NULL); 26589490a627SAlexander V. Chernikov } 26599490a627SAlexander V. Chernikov 2660b6ee846eSAlexander V. Chernikov /* 2661b6ee846eSAlexander V. Chernikov * Register new table algo @ta. 266235e1bbd0SAlexander V. Chernikov * Stores algo id inside @idx. 2663b6ee846eSAlexander V. Chernikov * 2664b6ee846eSAlexander V. Chernikov * Returns 0 on success. 2665b6ee846eSAlexander V. Chernikov */ 26660b565ac0SAlexander V. Chernikov int 26670b565ac0SAlexander V. Chernikov ipfw_add_table_algo(struct ip_fw_chain *ch, struct table_algo *ta, size_t size, 26680b565ac0SAlexander V. Chernikov int *idx) 26693b3a8eb9SGleb Smirnoff { 26709f7d47b0SAlexander V. Chernikov struct tables_config *tcfg; 26710b565ac0SAlexander V. Chernikov struct table_algo *ta_new; 2672b6ee846eSAlexander V. Chernikov size_t sz; 26730b565ac0SAlexander V. Chernikov 26740b565ac0SAlexander V. Chernikov if (size > sizeof(struct table_algo)) 26750b565ac0SAlexander V. Chernikov return (EINVAL); 26760b565ac0SAlexander V. Chernikov 2677b6ee846eSAlexander V. Chernikov /* Check for the required on-stack size for add/del */ 2678b6ee846eSAlexander V. Chernikov sz = roundup2(ta->ta_buf_size, sizeof(void *)); 2679b6ee846eSAlexander V. Chernikov if (sz > TA_BUF_SZ) 2680b6ee846eSAlexander V. Chernikov return (EINVAL); 2681b6ee846eSAlexander V. Chernikov 2682fddbbf75SAlexander V. Chernikov KASSERT(ta->type <= IPFW_TABLE_MAXTYPE,("Increase IPFW_TABLE_MAXTYPE")); 268357a1cf95SAlexander V. Chernikov 268435e1bbd0SAlexander V. Chernikov /* Copy algorithm data to stable storage. */ 26850b565ac0SAlexander V. Chernikov ta_new = malloc(sizeof(struct table_algo), M_IPFW, M_WAITOK | M_ZERO); 26860b565ac0SAlexander V. Chernikov memcpy(ta_new, ta, size); 26873b3a8eb9SGleb Smirnoff 26889f7d47b0SAlexander V. Chernikov tcfg = CHAIN_TO_TCFG(ch); 2689b074b7bbSAlexander V. Chernikov 26909f7d47b0SAlexander V. Chernikov KASSERT(tcfg->algo_count < 255, ("Increase algo array size")); 26919f7d47b0SAlexander V. Chernikov 26920b565ac0SAlexander V. Chernikov tcfg->algo[++tcfg->algo_count] = ta_new; 26930b565ac0SAlexander V. Chernikov ta_new->idx = tcfg->algo_count; 26940b565ac0SAlexander V. Chernikov 269557a1cf95SAlexander V. Chernikov /* Set algorithm as default one for given type */ 269657a1cf95SAlexander V. Chernikov if ((ta_new->flags & TA_FLAG_DEFAULT) != 0 && 269757a1cf95SAlexander V. Chernikov tcfg->def_algo[ta_new->type] == NULL) 269857a1cf95SAlexander V. Chernikov tcfg->def_algo[ta_new->type] = ta_new; 269957a1cf95SAlexander V. Chernikov 27000b565ac0SAlexander V. Chernikov *idx = ta_new->idx; 27010b565ac0SAlexander V. Chernikov 27020b565ac0SAlexander V. Chernikov return (0); 27030b565ac0SAlexander V. Chernikov } 27040b565ac0SAlexander V. Chernikov 2705b6ee846eSAlexander V. Chernikov /* 2706b6ee846eSAlexander V. Chernikov * Unregisters table algo using @idx as id. 2707c8d5d308SAlexander V. Chernikov * XXX: It is NOT safe to call this function in any place 2708c8d5d308SAlexander V. Chernikov * other than ipfw instance destroy handler. 2709b6ee846eSAlexander V. Chernikov */ 27100b565ac0SAlexander V. Chernikov void 27110b565ac0SAlexander V. Chernikov ipfw_del_table_algo(struct ip_fw_chain *ch, int idx) 27120b565ac0SAlexander V. Chernikov { 27130b565ac0SAlexander V. Chernikov struct tables_config *tcfg; 27140b565ac0SAlexander V. Chernikov struct table_algo *ta; 27150b565ac0SAlexander V. Chernikov 27160b565ac0SAlexander V. Chernikov tcfg = CHAIN_TO_TCFG(ch); 27170b565ac0SAlexander V. Chernikov 2718b6ee846eSAlexander V. Chernikov KASSERT(idx <= tcfg->algo_count, ("algo idx %d out of range 1..%d", 2719b6ee846eSAlexander V. Chernikov idx, tcfg->algo_count)); 27200b565ac0SAlexander V. Chernikov 27210b565ac0SAlexander V. Chernikov ta = tcfg->algo[idx]; 27220b565ac0SAlexander V. Chernikov KASSERT(ta != NULL, ("algo idx %d is NULL", idx)); 272357a1cf95SAlexander V. Chernikov 272457a1cf95SAlexander V. Chernikov if (tcfg->def_algo[ta->type] == ta) 272557a1cf95SAlexander V. Chernikov tcfg->def_algo[ta->type] = NULL; 272657a1cf95SAlexander V. Chernikov 27270b565ac0SAlexander V. Chernikov free(ta, M_IPFW); 27283b3a8eb9SGleb Smirnoff } 27293b3a8eb9SGleb Smirnoff 27309d099b4fSAlexander V. Chernikov /* 27319d099b4fSAlexander V. Chernikov * Lists all table algorithms currently available. 27329d099b4fSAlexander V. Chernikov * Data layout (v0)(current): 27339d099b4fSAlexander V. Chernikov * Request: [ ipfw_obj_lheader ], size = ipfw_obj_lheader.size 27349d099b4fSAlexander V. Chernikov * Reply: [ ipfw_obj_lheader ipfw_ta_info x N ] 27359d099b4fSAlexander V. Chernikov * 27369d099b4fSAlexander V. Chernikov * Returns 0 on success 27379d099b4fSAlexander V. Chernikov */ 27386b988f3aSAlexander V. Chernikov static int 27396b988f3aSAlexander V. Chernikov list_table_algo(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 2740e822d936SAlexander V. Chernikov struct sockopt_data *sd) 27419d099b4fSAlexander V. Chernikov { 27429d099b4fSAlexander V. Chernikov struct _ipfw_obj_lheader *olh; 27439d099b4fSAlexander V. Chernikov struct tables_config *tcfg; 27449d099b4fSAlexander V. Chernikov ipfw_ta_info *i; 27459d099b4fSAlexander V. Chernikov struct table_algo *ta; 27469d099b4fSAlexander V. Chernikov uint32_t count, n, size; 27479d099b4fSAlexander V. Chernikov 27489d099b4fSAlexander V. Chernikov olh = (struct _ipfw_obj_lheader *)ipfw_get_sopt_header(sd,sizeof(*olh)); 27499d099b4fSAlexander V. Chernikov if (olh == NULL) 27509d099b4fSAlexander V. Chernikov return (EINVAL); 27519d099b4fSAlexander V. Chernikov if (sd->valsize < olh->size) 27529d099b4fSAlexander V. Chernikov return (EINVAL); 27539d099b4fSAlexander V. Chernikov 27549d099b4fSAlexander V. Chernikov IPFW_UH_RLOCK(ch); 27559d099b4fSAlexander V. Chernikov tcfg = CHAIN_TO_TCFG(ch); 27569d099b4fSAlexander V. Chernikov count = tcfg->algo_count; 27579d099b4fSAlexander V. Chernikov size = count * sizeof(ipfw_ta_info) + sizeof(ipfw_obj_lheader); 27589d099b4fSAlexander V. Chernikov 27599d099b4fSAlexander V. Chernikov /* Fill in header regadless of buffer size */ 27609d099b4fSAlexander V. Chernikov olh->count = count; 27619d099b4fSAlexander V. Chernikov olh->objsize = sizeof(ipfw_ta_info); 27629d099b4fSAlexander V. Chernikov 27639d099b4fSAlexander V. Chernikov if (size > olh->size) { 27649d099b4fSAlexander V. Chernikov olh->size = size; 27659d099b4fSAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 27669d099b4fSAlexander V. Chernikov return (ENOMEM); 27679d099b4fSAlexander V. Chernikov } 27689d099b4fSAlexander V. Chernikov olh->size = size; 27699d099b4fSAlexander V. Chernikov 27709d099b4fSAlexander V. Chernikov for (n = 1; n <= count; n++) { 27719d099b4fSAlexander V. Chernikov i = (ipfw_ta_info *)ipfw_get_sopt_space(sd, sizeof(*i)); 27729d099b4fSAlexander V. Chernikov KASSERT(i != 0, ("previously checked buffer is not enough")); 27739d099b4fSAlexander V. Chernikov ta = tcfg->algo[n]; 27749d099b4fSAlexander V. Chernikov strlcpy(i->algoname, ta->name, sizeof(i->algoname)); 27759d099b4fSAlexander V. Chernikov i->type = ta->type; 27769d099b4fSAlexander V. Chernikov i->refcnt = ta->refcnt; 27779d099b4fSAlexander V. Chernikov } 27789d099b4fSAlexander V. Chernikov 27799d099b4fSAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 27809d099b4fSAlexander V. Chernikov 27819d099b4fSAlexander V. Chernikov return (0); 27829d099b4fSAlexander V. Chernikov } 27839d099b4fSAlexander V. Chernikov 2784b074b7bbSAlexander V. Chernikov /* 2785b074b7bbSAlexander V. Chernikov * Tables rewriting code 2786b074b7bbSAlexander V. Chernikov */ 2787b074b7bbSAlexander V. Chernikov 2788b074b7bbSAlexander V. Chernikov /* 2789b074b7bbSAlexander V. Chernikov * Determine table number and lookup type for @cmd. 2790b074b7bbSAlexander V. Chernikov * Fill @tbl and @type with appropriate values. 2791b074b7bbSAlexander V. Chernikov * Returns 0 for relevant opcodes, 1 otherwise. 2792b074b7bbSAlexander V. Chernikov */ 2793b074b7bbSAlexander V. Chernikov static int 2794b074b7bbSAlexander V. Chernikov classify_table_opcode(ipfw_insn *cmd, uint16_t *puidx, uint8_t *ptype) 2795b074b7bbSAlexander V. Chernikov { 2796b074b7bbSAlexander V. Chernikov ipfw_insn_if *cmdif; 2797b074b7bbSAlexander V. Chernikov int skip; 2798b074b7bbSAlexander V. Chernikov uint16_t v; 2799b074b7bbSAlexander V. Chernikov 2800b074b7bbSAlexander V. Chernikov skip = 1; 2801b074b7bbSAlexander V. Chernikov 2802b074b7bbSAlexander V. Chernikov switch (cmd->opcode) { 2803b074b7bbSAlexander V. Chernikov case O_IP_SRC_LOOKUP: 2804b074b7bbSAlexander V. Chernikov case O_IP_DST_LOOKUP: 2805b074b7bbSAlexander V. Chernikov /* Basic IPv4/IPv6 or u32 lookups */ 2806b074b7bbSAlexander V. Chernikov *puidx = cmd->arg1; 2807c21034b7SAlexander V. Chernikov /* Assume ADDR by default */ 2808c21034b7SAlexander V. Chernikov *ptype = IPFW_TABLE_ADDR; 2809b074b7bbSAlexander V. Chernikov skip = 0; 2810b074b7bbSAlexander V. Chernikov 2811b074b7bbSAlexander V. Chernikov if (F_LEN(cmd) > F_INSN_SIZE(ipfw_insn_u32)) { 2812b074b7bbSAlexander V. Chernikov /* 2813b074b7bbSAlexander V. Chernikov * generic lookup. The key must be 2814b074b7bbSAlexander V. Chernikov * in 32bit big-endian format. 2815b074b7bbSAlexander V. Chernikov */ 2816b074b7bbSAlexander V. Chernikov v = ((ipfw_insn_u32 *)cmd)->d[1]; 2817b074b7bbSAlexander V. Chernikov switch (v) { 2818b074b7bbSAlexander V. Chernikov case 0: 2819b074b7bbSAlexander V. Chernikov case 1: 2820b074b7bbSAlexander V. Chernikov /* IPv4 src/dst */ 2821b074b7bbSAlexander V. Chernikov break; 2822b074b7bbSAlexander V. Chernikov case 2: 2823b074b7bbSAlexander V. Chernikov case 3: 2824b074b7bbSAlexander V. Chernikov /* src/dst port */ 2825b23d5de9SAlexander V. Chernikov *ptype = IPFW_TABLE_NUMBER; 2826b074b7bbSAlexander V. Chernikov break; 2827b074b7bbSAlexander V. Chernikov case 4: 2828b074b7bbSAlexander V. Chernikov /* uid/gid */ 2829b23d5de9SAlexander V. Chernikov *ptype = IPFW_TABLE_NUMBER; 2830b23d5de9SAlexander V. Chernikov break; 2831b074b7bbSAlexander V. Chernikov case 5: 2832b074b7bbSAlexander V. Chernikov /* jid */ 2833b23d5de9SAlexander V. Chernikov *ptype = IPFW_TABLE_NUMBER; 2834b23d5de9SAlexander V. Chernikov break; 2835b074b7bbSAlexander V. Chernikov case 6: 2836b074b7bbSAlexander V. Chernikov /* dscp */ 2837b23d5de9SAlexander V. Chernikov *ptype = IPFW_TABLE_NUMBER; 2838b074b7bbSAlexander V. Chernikov break; 2839b074b7bbSAlexander V. Chernikov } 2840b074b7bbSAlexander V. Chernikov } 2841b074b7bbSAlexander V. Chernikov break; 2842b074b7bbSAlexander V. Chernikov case O_XMIT: 2843b074b7bbSAlexander V. Chernikov case O_RECV: 2844b074b7bbSAlexander V. Chernikov case O_VIA: 2845b074b7bbSAlexander V. Chernikov /* Interface table, possibly */ 2846b074b7bbSAlexander V. Chernikov cmdif = (ipfw_insn_if *)cmd; 2847b074b7bbSAlexander V. Chernikov if (cmdif->name[0] != '\1') 2848b074b7bbSAlexander V. Chernikov break; 2849b074b7bbSAlexander V. Chernikov 2850b074b7bbSAlexander V. Chernikov *ptype = IPFW_TABLE_INTERFACE; 28511940fa77SAlexander V. Chernikov *puidx = cmdif->p.kidx; 2852b074b7bbSAlexander V. Chernikov skip = 0; 2853b074b7bbSAlexander V. Chernikov break; 2854914bffb6SAlexander V. Chernikov case O_IP_FLOW_LOOKUP: 2855914bffb6SAlexander V. Chernikov *puidx = cmd->arg1; 2856914bffb6SAlexander V. Chernikov *ptype = IPFW_TABLE_FLOW; 2857914bffb6SAlexander V. Chernikov skip = 0; 2858914bffb6SAlexander V. Chernikov break; 2859b074b7bbSAlexander V. Chernikov } 2860b074b7bbSAlexander V. Chernikov 2861b074b7bbSAlexander V. Chernikov return (skip); 2862b074b7bbSAlexander V. Chernikov } 2863b074b7bbSAlexander V. Chernikov 2864b074b7bbSAlexander V. Chernikov /* 2865b074b7bbSAlexander V. Chernikov * Sets new table value for given opcode. 2866b074b7bbSAlexander V. Chernikov * Assume the same opcodes as classify_table_opcode() 2867b074b7bbSAlexander V. Chernikov */ 2868b074b7bbSAlexander V. Chernikov static void 2869b074b7bbSAlexander V. Chernikov update_table_opcode(ipfw_insn *cmd, uint16_t idx) 2870b074b7bbSAlexander V. Chernikov { 2871b074b7bbSAlexander V. Chernikov ipfw_insn_if *cmdif; 2872b074b7bbSAlexander V. Chernikov 2873b074b7bbSAlexander V. Chernikov switch (cmd->opcode) { 2874b074b7bbSAlexander V. Chernikov case O_IP_SRC_LOOKUP: 2875b074b7bbSAlexander V. Chernikov case O_IP_DST_LOOKUP: 2876b074b7bbSAlexander V. Chernikov /* Basic IPv4/IPv6 or u32 lookups */ 2877b074b7bbSAlexander V. Chernikov cmd->arg1 = idx; 2878b074b7bbSAlexander V. Chernikov break; 2879b074b7bbSAlexander V. Chernikov case O_XMIT: 2880b074b7bbSAlexander V. Chernikov case O_RECV: 2881b074b7bbSAlexander V. Chernikov case O_VIA: 2882b074b7bbSAlexander V. Chernikov /* Interface table, possibly */ 2883b074b7bbSAlexander V. Chernikov cmdif = (ipfw_insn_if *)cmd; 28841940fa77SAlexander V. Chernikov cmdif->p.kidx = idx; 2885b074b7bbSAlexander V. Chernikov break; 2886914bffb6SAlexander V. Chernikov case O_IP_FLOW_LOOKUP: 2887914bffb6SAlexander V. Chernikov cmd->arg1 = idx; 2888914bffb6SAlexander V. Chernikov break; 2889b074b7bbSAlexander V. Chernikov } 2890b074b7bbSAlexander V. Chernikov } 2891b074b7bbSAlexander V. Chernikov 2892ac35ff17SAlexander V. Chernikov /* 2893ac35ff17SAlexander V. Chernikov * Checks table name for validity. 2894ac35ff17SAlexander V. Chernikov * Enforce basic length checks, the rest 2895ac35ff17SAlexander V. Chernikov * should be done in userland. 2896ac35ff17SAlexander V. Chernikov * 2897ac35ff17SAlexander V. Chernikov * Returns 0 if name is considered valid. 2898ac35ff17SAlexander V. Chernikov */ 2899ac35ff17SAlexander V. Chernikov int 2900ac35ff17SAlexander V. Chernikov ipfw_check_table_name(char *name) 2901ac35ff17SAlexander V. Chernikov { 2902ac35ff17SAlexander V. Chernikov int nsize; 2903ac35ff17SAlexander V. Chernikov ipfw_obj_ntlv *ntlv = NULL; 2904ac35ff17SAlexander V. Chernikov 2905ac35ff17SAlexander V. Chernikov nsize = sizeof(ntlv->name); 2906ac35ff17SAlexander V. Chernikov 2907ac35ff17SAlexander V. Chernikov if (strnlen(name, nsize) == nsize) 2908ac35ff17SAlexander V. Chernikov return (EINVAL); 2909ac35ff17SAlexander V. Chernikov 2910ac35ff17SAlexander V. Chernikov if (name[0] == '\0') 2911ac35ff17SAlexander V. Chernikov return (EINVAL); 2912ac35ff17SAlexander V. Chernikov 2913ac35ff17SAlexander V. Chernikov /* 2914ac35ff17SAlexander V. Chernikov * TODO: do some more complicated checks 2915ac35ff17SAlexander V. Chernikov */ 2916ac35ff17SAlexander V. Chernikov 2917ac35ff17SAlexander V. Chernikov return (0); 2918ac35ff17SAlexander V. Chernikov } 2919ac35ff17SAlexander V. Chernikov 2920ac35ff17SAlexander V. Chernikov /* 2921ac35ff17SAlexander V. Chernikov * Find tablename TLV by @uid. 2922ac35ff17SAlexander V. Chernikov * Check @tlvs for valid data inside. 2923ac35ff17SAlexander V. Chernikov * 2924ac35ff17SAlexander V. Chernikov * Returns pointer to found TLV or NULL. 2925ac35ff17SAlexander V. Chernikov */ 2926ac35ff17SAlexander V. Chernikov static ipfw_obj_ntlv * 2927b074b7bbSAlexander V. Chernikov find_name_tlv(void *tlvs, int len, uint16_t uidx) 2928b074b7bbSAlexander V. Chernikov { 29299f7d47b0SAlexander V. Chernikov ipfw_obj_ntlv *ntlv; 2930b074b7bbSAlexander V. Chernikov uintptr_t pa, pe; 2931b074b7bbSAlexander V. Chernikov int l; 2932b074b7bbSAlexander V. Chernikov 2933b074b7bbSAlexander V. Chernikov pa = (uintptr_t)tlvs; 2934b074b7bbSAlexander V. Chernikov pe = pa + len; 2935b074b7bbSAlexander V. Chernikov l = 0; 2936b074b7bbSAlexander V. Chernikov for (; pa < pe; pa += l) { 29379f7d47b0SAlexander V. Chernikov ntlv = (ipfw_obj_ntlv *)pa; 2938b074b7bbSAlexander V. Chernikov l = ntlv->head.length; 2939ac35ff17SAlexander V. Chernikov 2940ac35ff17SAlexander V. Chernikov if (l != sizeof(*ntlv)) 2941ac35ff17SAlexander V. Chernikov return (NULL); 2942ac35ff17SAlexander V. Chernikov 2943563b5ab1SAlexander V. Chernikov if (ntlv->head.type != IPFW_TLV_TBL_NAME) 2944b074b7bbSAlexander V. Chernikov continue; 2945ac35ff17SAlexander V. Chernikov 2946b074b7bbSAlexander V. Chernikov if (ntlv->idx != uidx) 2947b074b7bbSAlexander V. Chernikov continue; 2948b074b7bbSAlexander V. Chernikov 2949ac35ff17SAlexander V. Chernikov if (ipfw_check_table_name(ntlv->name) != 0) 2950ac35ff17SAlexander V. Chernikov return (NULL); 2951ac35ff17SAlexander V. Chernikov 2952ac35ff17SAlexander V. Chernikov return (ntlv); 2953b074b7bbSAlexander V. Chernikov } 2954b074b7bbSAlexander V. Chernikov 2955b074b7bbSAlexander V. Chernikov return (NULL); 2956b074b7bbSAlexander V. Chernikov } 2957b074b7bbSAlexander V. Chernikov 2958ac35ff17SAlexander V. Chernikov /* 2959ac35ff17SAlexander V. Chernikov * Finds table config based on either legacy index 2960ac35ff17SAlexander V. Chernikov * or name in ntlv. 2961ac35ff17SAlexander V. Chernikov * Note @ti structure contains unchecked data from userland. 2962ac35ff17SAlexander V. Chernikov * 2963ac35ff17SAlexander V. Chernikov * Returns pointer to table_config or NULL. 2964ac35ff17SAlexander V. Chernikov */ 2965b074b7bbSAlexander V. Chernikov static struct table_config * 2966b074b7bbSAlexander V. Chernikov find_table(struct namedobj_instance *ni, struct tid_info *ti) 2967b074b7bbSAlexander V. Chernikov { 2968b074b7bbSAlexander V. Chernikov char *name, bname[16]; 2969b074b7bbSAlexander V. Chernikov struct named_object *no; 2970ac35ff17SAlexander V. Chernikov ipfw_obj_ntlv *ntlv; 2971ac35ff17SAlexander V. Chernikov uint32_t set; 2972b074b7bbSAlexander V. Chernikov 2973b074b7bbSAlexander V. Chernikov if (ti->tlvs != NULL) { 2974ac35ff17SAlexander V. Chernikov ntlv = find_name_tlv(ti->tlvs, ti->tlen, ti->uidx); 2975ac35ff17SAlexander V. Chernikov if (ntlv == NULL) 2976b074b7bbSAlexander V. Chernikov return (NULL); 2977ac35ff17SAlexander V. Chernikov name = ntlv->name; 297840e5f498SAlexander V. Chernikov 297940e5f498SAlexander V. Chernikov /* 298040e5f498SAlexander V. Chernikov * Use set provided by @ti instead of @ntlv one. 298140e5f498SAlexander V. Chernikov * This is needed due to different sets behavior 298240e5f498SAlexander V. Chernikov * controlled by V_fw_tables_sets. 298340e5f498SAlexander V. Chernikov */ 298440e5f498SAlexander V. Chernikov set = ti->set; 2985b074b7bbSAlexander V. Chernikov } else { 2986b074b7bbSAlexander V. Chernikov snprintf(bname, sizeof(bname), "%d", ti->uidx); 2987b074b7bbSAlexander V. Chernikov name = bname; 2988ac35ff17SAlexander V. Chernikov set = 0; 2989b074b7bbSAlexander V. Chernikov } 2990b074b7bbSAlexander V. Chernikov 2991ac35ff17SAlexander V. Chernikov no = ipfw_objhash_lookup_name(ni, set, name); 2992b074b7bbSAlexander V. Chernikov 2993b074b7bbSAlexander V. Chernikov return ((struct table_config *)no); 2994b074b7bbSAlexander V. Chernikov } 2995b074b7bbSAlexander V. Chernikov 299635e1bbd0SAlexander V. Chernikov /* 299735e1bbd0SAlexander V. Chernikov * Allocate new table config structure using 299835e1bbd0SAlexander V. Chernikov * specified @algo and @aname. 299935e1bbd0SAlexander V. Chernikov * 300035e1bbd0SAlexander V. Chernikov * Returns pointer to config or NULL. 300135e1bbd0SAlexander V. Chernikov */ 3002b074b7bbSAlexander V. Chernikov static struct table_config * 300368394ec8SAlexander V. Chernikov alloc_table_config(struct ip_fw_chain *ch, struct tid_info *ti, 30040cba2b28SAlexander V. Chernikov struct table_algo *ta, char *aname, uint8_t tflags) 3005b074b7bbSAlexander V. Chernikov { 3006b074b7bbSAlexander V. Chernikov char *name, bname[16]; 3007b074b7bbSAlexander V. Chernikov struct table_config *tc; 3008b074b7bbSAlexander V. Chernikov int error; 3009ac35ff17SAlexander V. Chernikov ipfw_obj_ntlv *ntlv; 3010ac35ff17SAlexander V. Chernikov uint32_t set; 3011b074b7bbSAlexander V. Chernikov 3012b074b7bbSAlexander V. Chernikov if (ti->tlvs != NULL) { 3013ac35ff17SAlexander V. Chernikov ntlv = find_name_tlv(ti->tlvs, ti->tlen, ti->uidx); 3014ac35ff17SAlexander V. Chernikov if (ntlv == NULL) 3015b074b7bbSAlexander V. Chernikov return (NULL); 3016ac35ff17SAlexander V. Chernikov name = ntlv->name; 3017ac35ff17SAlexander V. Chernikov set = ntlv->set; 3018b074b7bbSAlexander V. Chernikov } else { 3019b074b7bbSAlexander V. Chernikov snprintf(bname, sizeof(bname), "%d", ti->uidx); 3020b074b7bbSAlexander V. Chernikov name = bname; 3021ac35ff17SAlexander V. Chernikov set = 0; 3022b074b7bbSAlexander V. Chernikov } 3023b074b7bbSAlexander V. Chernikov 3024b074b7bbSAlexander V. Chernikov tc = malloc(sizeof(struct table_config), M_IPFW, M_WAITOK | M_ZERO); 3025b074b7bbSAlexander V. Chernikov tc->no.name = tc->tablename; 3026fd0869d5SAlexander V. Chernikov tc->no.type = ta->type; 3027ac35ff17SAlexander V. Chernikov tc->no.set = set; 3028914bffb6SAlexander V. Chernikov tc->tflags = tflags; 30299f7d47b0SAlexander V. Chernikov tc->ta = ta; 3030b074b7bbSAlexander V. Chernikov strlcpy(tc->tablename, name, sizeof(tc->tablename)); 30310cba2b28SAlexander V. Chernikov /* Set "shared" value type by default */ 30320cba2b28SAlexander V. Chernikov tc->vshared = 1; 3033b074b7bbSAlexander V. Chernikov 3034b074b7bbSAlexander V. Chernikov if (ti->tlvs == NULL) { 3035b074b7bbSAlexander V. Chernikov tc->no.compat = 1; 3036b074b7bbSAlexander V. Chernikov tc->no.uidx = ti->uidx; 3037b074b7bbSAlexander V. Chernikov } 3038b074b7bbSAlexander V. Chernikov 3039b074b7bbSAlexander V. Chernikov /* Preallocate data structures for new tables */ 30404c060d85SAlexander V. Chernikov error = ta->init(ch, &tc->astate, &tc->ti_copy, aname, tflags); 3041b074b7bbSAlexander V. Chernikov if (error != 0) { 3042b074b7bbSAlexander V. Chernikov free(tc, M_IPFW); 3043b074b7bbSAlexander V. Chernikov return (NULL); 3044b074b7bbSAlexander V. Chernikov } 3045b074b7bbSAlexander V. Chernikov 3046b074b7bbSAlexander V. Chernikov return (tc); 3047b074b7bbSAlexander V. Chernikov } 3048b074b7bbSAlexander V. Chernikov 304935e1bbd0SAlexander V. Chernikov /* 305035e1bbd0SAlexander V. Chernikov * Destroys table state and config. 305135e1bbd0SAlexander V. Chernikov */ 3052b074b7bbSAlexander V. Chernikov static void 3053b074b7bbSAlexander V. Chernikov free_table_config(struct namedobj_instance *ni, struct table_config *tc) 3054b074b7bbSAlexander V. Chernikov { 3055b074b7bbSAlexander V. Chernikov 305635e1bbd0SAlexander V. Chernikov KASSERT(tc->linked == 0, ("free() on linked config")); 30570caab009SAlexander V. Chernikov /* UH lock MUST NOT be held */ 3058b074b7bbSAlexander V. Chernikov 30590468c5baSAlexander V. Chernikov /* 30600468c5baSAlexander V. Chernikov * We're using ta without any locking/referencing. 30610468c5baSAlexander V. Chernikov * TODO: fix this if we're going to use unloadable algos. 30620468c5baSAlexander V. Chernikov */ 30634c060d85SAlexander V. Chernikov tc->ta->destroy(tc->astate, &tc->ti_copy); 3064b074b7bbSAlexander V. Chernikov free(tc, M_IPFW); 3065b074b7bbSAlexander V. Chernikov } 3066b074b7bbSAlexander V. Chernikov 3067b074b7bbSAlexander V. Chernikov /* 3068b074b7bbSAlexander V. Chernikov * Links @tc to @chain table named instance. 3069b074b7bbSAlexander V. Chernikov * Sets appropriate type/states in @chain table info. 3070b074b7bbSAlexander V. Chernikov */ 3071b074b7bbSAlexander V. Chernikov static void 30729f7d47b0SAlexander V. Chernikov link_table(struct ip_fw_chain *ch, struct table_config *tc) 3073b074b7bbSAlexander V. Chernikov { 3074b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 30759f7d47b0SAlexander V. Chernikov struct table_info *ti; 3076b074b7bbSAlexander V. Chernikov uint16_t kidx; 3077b074b7bbSAlexander V. Chernikov 30789f7d47b0SAlexander V. Chernikov IPFW_UH_WLOCK_ASSERT(ch); 30799f7d47b0SAlexander V. Chernikov IPFW_WLOCK_ASSERT(ch); 3080b074b7bbSAlexander V. Chernikov 30819f7d47b0SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 3082b074b7bbSAlexander V. Chernikov kidx = tc->no.kidx; 3083b074b7bbSAlexander V. Chernikov 3084b074b7bbSAlexander V. Chernikov ipfw_objhash_add(ni, &tc->no); 30859f7d47b0SAlexander V. Chernikov 30869f7d47b0SAlexander V. Chernikov ti = KIDX_TO_TI(ch, kidx); 30874c060d85SAlexander V. Chernikov *ti = tc->ti_copy; 3088b074b7bbSAlexander V. Chernikov 308968394ec8SAlexander V. Chernikov /* Notify algo on real @ti address */ 309068394ec8SAlexander V. Chernikov if (tc->ta->change_ti != NULL) 309168394ec8SAlexander V. Chernikov tc->ta->change_ti(tc->astate, ti); 309268394ec8SAlexander V. Chernikov 3093b074b7bbSAlexander V. Chernikov tc->linked = 1; 30949d099b4fSAlexander V. Chernikov tc->ta->refcnt++; 3095b074b7bbSAlexander V. Chernikov } 3096b074b7bbSAlexander V. Chernikov 3097b074b7bbSAlexander V. Chernikov /* 3098b074b7bbSAlexander V. Chernikov * Unlinks @tc from @chain table named instance. 3099b074b7bbSAlexander V. Chernikov * Zeroes states in @chain and stores them in @tc. 3100b074b7bbSAlexander V. Chernikov */ 3101b074b7bbSAlexander V. Chernikov static void 31029f7d47b0SAlexander V. Chernikov unlink_table(struct ip_fw_chain *ch, struct table_config *tc) 3103b074b7bbSAlexander V. Chernikov { 3104b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 31059f7d47b0SAlexander V. Chernikov struct table_info *ti; 3106b074b7bbSAlexander V. Chernikov uint16_t kidx; 3107b074b7bbSAlexander V. Chernikov 31089f7d47b0SAlexander V. Chernikov IPFW_UH_WLOCK_ASSERT(ch); 31099f7d47b0SAlexander V. Chernikov IPFW_WLOCK_ASSERT(ch); 3110b074b7bbSAlexander V. Chernikov 31119f7d47b0SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 3112b074b7bbSAlexander V. Chernikov kidx = tc->no.kidx; 3113b074b7bbSAlexander V. Chernikov 31149f7d47b0SAlexander V. Chernikov /* Clear state. @ti copy is already saved inside @tc */ 3115b074b7bbSAlexander V. Chernikov ipfw_objhash_del(ni, &tc->no); 31169f7d47b0SAlexander V. Chernikov ti = KIDX_TO_TI(ch, kidx); 31179f7d47b0SAlexander V. Chernikov memset(ti, 0, sizeof(struct table_info)); 3118b074b7bbSAlexander V. Chernikov tc->linked = 0; 31199d099b4fSAlexander V. Chernikov tc->ta->refcnt--; 312068394ec8SAlexander V. Chernikov 312168394ec8SAlexander V. Chernikov /* Notify algo on real @ti address */ 312268394ec8SAlexander V. Chernikov if (tc->ta->change_ti != NULL) 312368394ec8SAlexander V. Chernikov tc->ta->change_ti(tc->astate, NULL); 3124b074b7bbSAlexander V. Chernikov } 3125b074b7bbSAlexander V. Chernikov 3126a73d728dSAlexander V. Chernikov struct swap_table_args { 3127a73d728dSAlexander V. Chernikov int set; 3128a73d728dSAlexander V. Chernikov int new_set; 3129a73d728dSAlexander V. Chernikov int mv; 3130a73d728dSAlexander V. Chernikov }; 3131a73d728dSAlexander V. Chernikov 3132a73d728dSAlexander V. Chernikov /* 3133a73d728dSAlexander V. Chernikov * Change set for each matching table. 3134a73d728dSAlexander V. Chernikov * 3135a73d728dSAlexander V. Chernikov * Ensure we dispatch each table once by setting/checking ochange 3136a73d728dSAlexander V. Chernikov * fields. 3137a73d728dSAlexander V. Chernikov */ 3138a73d728dSAlexander V. Chernikov static void 3139a73d728dSAlexander V. Chernikov swap_table_set(struct namedobj_instance *ni, struct named_object *no, 3140a73d728dSAlexander V. Chernikov void *arg) 3141a73d728dSAlexander V. Chernikov { 3142a73d728dSAlexander V. Chernikov struct table_config *tc; 3143a73d728dSAlexander V. Chernikov struct swap_table_args *sta; 3144a73d728dSAlexander V. Chernikov 3145a73d728dSAlexander V. Chernikov tc = (struct table_config *)no; 3146a73d728dSAlexander V. Chernikov sta = (struct swap_table_args *)arg; 3147a73d728dSAlexander V. Chernikov 3148a73d728dSAlexander V. Chernikov if (no->set != sta->set && (no->set != sta->new_set || sta->mv != 0)) 3149a73d728dSAlexander V. Chernikov return; 3150a73d728dSAlexander V. Chernikov 3151a73d728dSAlexander V. Chernikov if (tc->ochanged != 0) 3152a73d728dSAlexander V. Chernikov return; 3153a73d728dSAlexander V. Chernikov 3154a73d728dSAlexander V. Chernikov tc->ochanged = 1; 3155a73d728dSAlexander V. Chernikov ipfw_objhash_del(ni, no); 3156a73d728dSAlexander V. Chernikov if (no->set == sta->set) 3157a73d728dSAlexander V. Chernikov no->set = sta->new_set; 3158a73d728dSAlexander V. Chernikov else 3159a73d728dSAlexander V. Chernikov no->set = sta->set; 3160a73d728dSAlexander V. Chernikov ipfw_objhash_add(ni, no); 3161a73d728dSAlexander V. Chernikov } 3162a73d728dSAlexander V. Chernikov 3163a73d728dSAlexander V. Chernikov /* 3164a73d728dSAlexander V. Chernikov * Cleans up ochange field for all tables. 3165a73d728dSAlexander V. Chernikov */ 3166a73d728dSAlexander V. Chernikov static void 3167a73d728dSAlexander V. Chernikov clean_table_set_data(struct namedobj_instance *ni, struct named_object *no, 3168a73d728dSAlexander V. Chernikov void *arg) 3169a73d728dSAlexander V. Chernikov { 3170a73d728dSAlexander V. Chernikov struct table_config *tc; 3171a73d728dSAlexander V. Chernikov struct swap_table_args *sta; 3172a73d728dSAlexander V. Chernikov 3173a73d728dSAlexander V. Chernikov tc = (struct table_config *)no; 3174a73d728dSAlexander V. Chernikov sta = (struct swap_table_args *)arg; 3175a73d728dSAlexander V. Chernikov 3176a73d728dSAlexander V. Chernikov tc->ochanged = 0; 3177a73d728dSAlexander V. Chernikov } 3178a73d728dSAlexander V. Chernikov 3179a73d728dSAlexander V. Chernikov /* 3180a73d728dSAlexander V. Chernikov * Swaps tables within two sets. 3181a73d728dSAlexander V. Chernikov */ 3182a73d728dSAlexander V. Chernikov void 3183a73d728dSAlexander V. Chernikov ipfw_swap_tables_sets(struct ip_fw_chain *ch, uint32_t set, 3184a73d728dSAlexander V. Chernikov uint32_t new_set, int mv) 3185a73d728dSAlexander V. Chernikov { 3186a73d728dSAlexander V. Chernikov struct swap_table_args sta; 3187a73d728dSAlexander V. Chernikov 3188a73d728dSAlexander V. Chernikov IPFW_UH_WLOCK_ASSERT(ch); 3189a73d728dSAlexander V. Chernikov 3190a73d728dSAlexander V. Chernikov sta.set = set; 3191a73d728dSAlexander V. Chernikov sta.new_set = new_set; 3192a73d728dSAlexander V. Chernikov sta.mv = mv; 3193a73d728dSAlexander V. Chernikov 3194a73d728dSAlexander V. Chernikov ipfw_objhash_foreach(CHAIN_TO_NI(ch), swap_table_set, &sta); 3195a73d728dSAlexander V. Chernikov ipfw_objhash_foreach(CHAIN_TO_NI(ch), clean_table_set_data, &sta); 3196a73d728dSAlexander V. Chernikov } 3197a73d728dSAlexander V. Chernikov 3198a73d728dSAlexander V. Chernikov /* 3199a73d728dSAlexander V. Chernikov * Move all tables which are reference by rules in @rr to set @new_set. 3200a73d728dSAlexander V. Chernikov * Makes sure that all relevant tables are referenced ONLLY by given rules. 3201a73d728dSAlexander V. Chernikov * 3202a73d728dSAlexander V. Chernikov * Retuns 0 on success, 3203a73d728dSAlexander V. Chernikov */ 3204a73d728dSAlexander V. Chernikov int 3205a73d728dSAlexander V. Chernikov ipfw_move_tables_sets(struct ip_fw_chain *ch, ipfw_range_tlv *rt, 3206a73d728dSAlexander V. Chernikov uint32_t new_set) 3207a73d728dSAlexander V. Chernikov { 3208a73d728dSAlexander V. Chernikov struct ip_fw *rule; 3209a73d728dSAlexander V. Chernikov struct table_config *tc; 3210a73d728dSAlexander V. Chernikov struct named_object *no; 3211a73d728dSAlexander V. Chernikov struct namedobj_instance *ni; 3212a73d728dSAlexander V. Chernikov int bad, i, l, cmdlen; 3213a73d728dSAlexander V. Chernikov uint16_t kidx; 3214a73d728dSAlexander V. Chernikov uint8_t type; 3215a73d728dSAlexander V. Chernikov ipfw_insn *cmd; 3216a73d728dSAlexander V. Chernikov 3217a73d728dSAlexander V. Chernikov IPFW_UH_WLOCK_ASSERT(ch); 3218a73d728dSAlexander V. Chernikov 3219a73d728dSAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 3220a73d728dSAlexander V. Chernikov 3221a73d728dSAlexander V. Chernikov /* Stage 1: count number of references by given rules */ 3222a73d728dSAlexander V. Chernikov for (i = 0; i < ch->n_rules - 1; i++) { 3223a73d728dSAlexander V. Chernikov rule = ch->map[i]; 3224a73d728dSAlexander V. Chernikov if (ipfw_match_range(rule, rt) == 0) 3225a73d728dSAlexander V. Chernikov continue; 3226a73d728dSAlexander V. Chernikov 3227a73d728dSAlexander V. Chernikov l = rule->cmd_len; 3228a73d728dSAlexander V. Chernikov cmd = rule->cmd; 3229a73d728dSAlexander V. Chernikov cmdlen = 0; 3230a73d728dSAlexander V. Chernikov for ( ; l > 0 ; l -= cmdlen, cmd += cmdlen) { 3231a73d728dSAlexander V. Chernikov cmdlen = F_LEN(cmd); 3232a73d728dSAlexander V. Chernikov if (classify_table_opcode(cmd, &kidx, &type) != 0) 3233a73d728dSAlexander V. Chernikov continue; 3234a73d728dSAlexander V. Chernikov no = ipfw_objhash_lookup_kidx(ni, kidx); 3235a73d728dSAlexander V. Chernikov KASSERT(no != NULL, 3236a73d728dSAlexander V. Chernikov ("objhash lookup failed on index %d", kidx)); 3237a73d728dSAlexander V. Chernikov tc = (struct table_config *)no; 3238a73d728dSAlexander V. Chernikov tc->ocount++; 3239a73d728dSAlexander V. Chernikov } 3240a73d728dSAlexander V. Chernikov 3241a73d728dSAlexander V. Chernikov } 3242a73d728dSAlexander V. Chernikov 3243a73d728dSAlexander V. Chernikov /* Stage 2: verify "ownership" */ 3244a73d728dSAlexander V. Chernikov bad = 0; 3245a73d728dSAlexander V. Chernikov for (i = 0; i < ch->n_rules - 1; i++) { 3246a73d728dSAlexander V. Chernikov rule = ch->map[i]; 3247a73d728dSAlexander V. Chernikov if (ipfw_match_range(rule, rt) == 0) 3248a73d728dSAlexander V. Chernikov continue; 3249a73d728dSAlexander V. Chernikov 3250a73d728dSAlexander V. Chernikov l = rule->cmd_len; 3251a73d728dSAlexander V. Chernikov cmd = rule->cmd; 3252a73d728dSAlexander V. Chernikov cmdlen = 0; 3253a73d728dSAlexander V. Chernikov for ( ; l > 0 ; l -= cmdlen, cmd += cmdlen) { 3254a73d728dSAlexander V. Chernikov cmdlen = F_LEN(cmd); 3255a73d728dSAlexander V. Chernikov if (classify_table_opcode(cmd, &kidx, &type) != 0) 3256a73d728dSAlexander V. Chernikov continue; 3257a73d728dSAlexander V. Chernikov no = ipfw_objhash_lookup_kidx(ni, kidx); 3258a73d728dSAlexander V. Chernikov KASSERT(no != NULL, 3259a73d728dSAlexander V. Chernikov ("objhash lookup failed on index %d", kidx)); 3260a73d728dSAlexander V. Chernikov tc = (struct table_config *)no; 3261a73d728dSAlexander V. Chernikov if (tc->no.refcnt != tc->ocount) { 3262a73d728dSAlexander V. Chernikov 3263a73d728dSAlexander V. Chernikov /* 3264a73d728dSAlexander V. Chernikov * Number of references differ: 3265a73d728dSAlexander V. Chernikov * Other rule(s) are holding reference to given 3266a73d728dSAlexander V. Chernikov * table, so it is not possible to change its set. 3267a73d728dSAlexander V. Chernikov * 3268a73d728dSAlexander V. Chernikov * Note that refcnt may account 3269a73d728dSAlexander V. Chernikov * references to some going-to-be-added rules. 3270a73d728dSAlexander V. Chernikov * Since we don't know their numbers (and event 3271a73d728dSAlexander V. Chernikov * if they will be added) it is perfectly OK 3272a73d728dSAlexander V. Chernikov * to return error here. 3273a73d728dSAlexander V. Chernikov */ 3274a73d728dSAlexander V. Chernikov bad = 1; 3275a73d728dSAlexander V. Chernikov break; 3276a73d728dSAlexander V. Chernikov } 3277a73d728dSAlexander V. Chernikov } 3278a73d728dSAlexander V. Chernikov 3279a73d728dSAlexander V. Chernikov if (bad != 0) 3280a73d728dSAlexander V. Chernikov break; 3281a73d728dSAlexander V. Chernikov } 3282a73d728dSAlexander V. Chernikov 3283a73d728dSAlexander V. Chernikov /* Stage 3: change set or cleanup */ 3284a73d728dSAlexander V. Chernikov for (i = 0; i < ch->n_rules - 1; i++) { 3285a73d728dSAlexander V. Chernikov rule = ch->map[i]; 3286a73d728dSAlexander V. Chernikov if (ipfw_match_range(rule, rt) == 0) 3287a73d728dSAlexander V. Chernikov continue; 3288a73d728dSAlexander V. Chernikov 3289a73d728dSAlexander V. Chernikov l = rule->cmd_len; 3290a73d728dSAlexander V. Chernikov cmd = rule->cmd; 3291a73d728dSAlexander V. Chernikov cmdlen = 0; 3292a73d728dSAlexander V. Chernikov for ( ; l > 0 ; l -= cmdlen, cmd += cmdlen) { 3293a73d728dSAlexander V. Chernikov cmdlen = F_LEN(cmd); 3294a73d728dSAlexander V. Chernikov if (classify_table_opcode(cmd, &kidx, &type) != 0) 3295a73d728dSAlexander V. Chernikov continue; 3296a73d728dSAlexander V. Chernikov no = ipfw_objhash_lookup_kidx(ni, kidx); 3297a73d728dSAlexander V. Chernikov KASSERT(no != NULL, 3298a73d728dSAlexander V. Chernikov ("objhash lookup failed on index %d", kidx)); 3299a73d728dSAlexander V. Chernikov tc = (struct table_config *)no; 3300a73d728dSAlexander V. Chernikov 3301a73d728dSAlexander V. Chernikov tc->ocount = 0; 3302a73d728dSAlexander V. Chernikov if (bad != 0) 3303a73d728dSAlexander V. Chernikov continue; 3304a73d728dSAlexander V. Chernikov 3305a73d728dSAlexander V. Chernikov /* Actually change set. */ 3306a73d728dSAlexander V. Chernikov ipfw_objhash_del(ni, no); 3307a73d728dSAlexander V. Chernikov no->set = new_set; 3308a73d728dSAlexander V. Chernikov ipfw_objhash_add(ni, no); 3309a73d728dSAlexander V. Chernikov } 3310a73d728dSAlexander V. Chernikov } 3311a73d728dSAlexander V. Chernikov 3312a73d728dSAlexander V. Chernikov return (bad); 3313a73d728dSAlexander V. Chernikov } 3314a73d728dSAlexander V. Chernikov 3315b074b7bbSAlexander V. Chernikov /* 3316f99fbf96SAlexander V. Chernikov * Finds and bumps refcount for tables referenced by given @rule. 3317e5eec6ddSAlexander V. Chernikov * Auto-creates non-existing tables. 3318f99fbf96SAlexander V. Chernikov * Fills in @oib array with userland/kernel indexes. 3319f99fbf96SAlexander V. Chernikov * First free oidx pointer is saved back in @oib. 3320f99fbf96SAlexander V. Chernikov * 3321f99fbf96SAlexander V. Chernikov * Returns 0 on success. 3322f99fbf96SAlexander V. Chernikov */ 3323f99fbf96SAlexander V. Chernikov static int 3324e5eec6ddSAlexander V. Chernikov find_ref_rule_tables(struct ip_fw_chain *ch, struct ip_fw *rule, 3325f99fbf96SAlexander V. Chernikov struct rule_check_info *ci, struct obj_idx **oib, struct tid_info *ti) 3326f99fbf96SAlexander V. Chernikov { 3327f99fbf96SAlexander V. Chernikov struct table_config *tc; 3328f99fbf96SAlexander V. Chernikov struct namedobj_instance *ni; 3329f99fbf96SAlexander V. Chernikov struct named_object *no; 3330f99fbf96SAlexander V. Chernikov int cmdlen, error, l, numnew; 3331f99fbf96SAlexander V. Chernikov uint16_t kidx; 3332f99fbf96SAlexander V. Chernikov ipfw_insn *cmd; 3333f99fbf96SAlexander V. Chernikov struct obj_idx *pidx, *pidx_first, *p; 3334f99fbf96SAlexander V. Chernikov 3335f99fbf96SAlexander V. Chernikov pidx_first = *oib; 3336f99fbf96SAlexander V. Chernikov pidx = pidx_first; 3337f99fbf96SAlexander V. Chernikov l = rule->cmd_len; 3338f99fbf96SAlexander V. Chernikov cmd = rule->cmd; 3339f99fbf96SAlexander V. Chernikov cmdlen = 0; 3340f99fbf96SAlexander V. Chernikov error = 0; 3341f99fbf96SAlexander V. Chernikov numnew = 0; 3342f99fbf96SAlexander V. Chernikov 3343f99fbf96SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 3344f99fbf96SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 3345f99fbf96SAlexander V. Chernikov 3346e5eec6ddSAlexander V. Chernikov /* Increase refcount on each existing referenced table. */ 3347f99fbf96SAlexander V. Chernikov for ( ; l > 0 ; l -= cmdlen, cmd += cmdlen) { 3348f99fbf96SAlexander V. Chernikov cmdlen = F_LEN(cmd); 3349f99fbf96SAlexander V. Chernikov 3350f99fbf96SAlexander V. Chernikov if (classify_table_opcode(cmd, &ti->uidx, &ti->type) != 0) 3351f99fbf96SAlexander V. Chernikov continue; 3352f99fbf96SAlexander V. Chernikov 3353f99fbf96SAlexander V. Chernikov pidx->uidx = ti->uidx; 3354f99fbf96SAlexander V. Chernikov pidx->type = ti->type; 3355f99fbf96SAlexander V. Chernikov 3356f99fbf96SAlexander V. Chernikov if ((tc = find_table(ni, ti)) != NULL) { 3357f99fbf96SAlexander V. Chernikov if (tc->no.type != ti->type) { 3358f99fbf96SAlexander V. Chernikov /* Incompatible types */ 3359f99fbf96SAlexander V. Chernikov error = EINVAL; 3360f99fbf96SAlexander V. Chernikov break; 3361f99fbf96SAlexander V. Chernikov } 3362f99fbf96SAlexander V. Chernikov 3363f99fbf96SAlexander V. Chernikov /* Reference found table and save kidx */ 3364f99fbf96SAlexander V. Chernikov tc->no.refcnt++; 3365f99fbf96SAlexander V. Chernikov pidx->kidx = tc->no.kidx; 3366f99fbf96SAlexander V. Chernikov pidx++; 3367f99fbf96SAlexander V. Chernikov continue; 3368f99fbf96SAlexander V. Chernikov } 3369f99fbf96SAlexander V. Chernikov 3370f99fbf96SAlexander V. Chernikov /* 3371f99fbf96SAlexander V. Chernikov * Compability stuff for old clients: 3372f99fbf96SAlexander V. Chernikov * prepare to manually create non-existing tables. 3373f99fbf96SAlexander V. Chernikov */ 3374f99fbf96SAlexander V. Chernikov pidx++; 3375f99fbf96SAlexander V. Chernikov numnew++; 3376f99fbf96SAlexander V. Chernikov } 3377f99fbf96SAlexander V. Chernikov 3378f99fbf96SAlexander V. Chernikov if (error != 0) { 3379f99fbf96SAlexander V. Chernikov /* Unref everything we have already done */ 3380f99fbf96SAlexander V. Chernikov for (p = *oib; p < pidx; p++) { 3381f99fbf96SAlexander V. Chernikov if (p->kidx == 0) 3382f99fbf96SAlexander V. Chernikov continue; 3383f99fbf96SAlexander V. Chernikov 3384f99fbf96SAlexander V. Chernikov /* Find & unref by existing idx */ 3385f99fbf96SAlexander V. Chernikov no = ipfw_objhash_lookup_kidx(ni, p->kidx); 3386f99fbf96SAlexander V. Chernikov KASSERT(no != NULL, ("Ref'd table %d disappeared", 3387f99fbf96SAlexander V. Chernikov p->kidx)); 3388f99fbf96SAlexander V. Chernikov 3389f99fbf96SAlexander V. Chernikov no->refcnt--; 3390f99fbf96SAlexander V. Chernikov } 3391f99fbf96SAlexander V. Chernikov } 3392f99fbf96SAlexander V. Chernikov 3393f99fbf96SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 3394f99fbf96SAlexander V. Chernikov 3395f99fbf96SAlexander V. Chernikov if (numnew == 0) { 3396f99fbf96SAlexander V. Chernikov *oib = pidx; 3397f99fbf96SAlexander V. Chernikov return (error); 3398f99fbf96SAlexander V. Chernikov } 3399f99fbf96SAlexander V. Chernikov 3400f99fbf96SAlexander V. Chernikov /* 3401f99fbf96SAlexander V. Chernikov * Compatibility stuff: do actual creation for non-existing, 3402f99fbf96SAlexander V. Chernikov * but referenced tables. 3403f99fbf96SAlexander V. Chernikov */ 3404f99fbf96SAlexander V. Chernikov for (p = pidx_first; p < pidx; p++) { 3405f99fbf96SAlexander V. Chernikov if (p->kidx != 0) 3406f99fbf96SAlexander V. Chernikov continue; 3407f99fbf96SAlexander V. Chernikov 3408f99fbf96SAlexander V. Chernikov ti->uidx = p->uidx; 3409f99fbf96SAlexander V. Chernikov ti->type = p->type; 3410f99fbf96SAlexander V. Chernikov ti->atype = 0; 3411f99fbf96SAlexander V. Chernikov 3412867708f7SAlexander V. Chernikov error = create_table_compat(ch, ti, &kidx); 3413f99fbf96SAlexander V. Chernikov if (error == 0) { 3414f99fbf96SAlexander V. Chernikov p->kidx = kidx; 3415f99fbf96SAlexander V. Chernikov continue; 3416f99fbf96SAlexander V. Chernikov } 3417f99fbf96SAlexander V. Chernikov 3418f99fbf96SAlexander V. Chernikov /* Error. We have to drop references */ 3419f99fbf96SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 3420f99fbf96SAlexander V. Chernikov for (p = pidx_first; p < pidx; p++) { 3421f99fbf96SAlexander V. Chernikov if (p->kidx == 0) 3422f99fbf96SAlexander V. Chernikov continue; 3423f99fbf96SAlexander V. Chernikov 3424f99fbf96SAlexander V. Chernikov /* Find & unref by existing idx */ 3425f99fbf96SAlexander V. Chernikov no = ipfw_objhash_lookup_kidx(ni, p->kidx); 3426f99fbf96SAlexander V. Chernikov KASSERT(no != NULL, ("Ref'd table %d disappeared", 3427f99fbf96SAlexander V. Chernikov p->kidx)); 3428f99fbf96SAlexander V. Chernikov 3429f99fbf96SAlexander V. Chernikov no->refcnt--; 3430f99fbf96SAlexander V. Chernikov } 3431f99fbf96SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 3432f99fbf96SAlexander V. Chernikov 3433f99fbf96SAlexander V. Chernikov return (error); 3434f99fbf96SAlexander V. Chernikov } 3435f99fbf96SAlexander V. Chernikov 3436f99fbf96SAlexander V. Chernikov *oib = pidx; 3437f99fbf96SAlexander V. Chernikov 3438f99fbf96SAlexander V. Chernikov return (error); 3439f99fbf96SAlexander V. Chernikov } 3440f99fbf96SAlexander V. Chernikov 3441f99fbf96SAlexander V. Chernikov /* 3442f99fbf96SAlexander V. Chernikov * Remove references from every table used in @rule. 3443f99fbf96SAlexander V. Chernikov */ 3444f99fbf96SAlexander V. Chernikov void 3445e5eec6ddSAlexander V. Chernikov ipfw_unref_rule_tables(struct ip_fw_chain *chain, struct ip_fw *rule) 3446f99fbf96SAlexander V. Chernikov { 3447f99fbf96SAlexander V. Chernikov int cmdlen, l; 3448f99fbf96SAlexander V. Chernikov ipfw_insn *cmd; 3449f99fbf96SAlexander V. Chernikov struct namedobj_instance *ni; 3450f99fbf96SAlexander V. Chernikov struct named_object *no; 3451f99fbf96SAlexander V. Chernikov uint16_t kidx; 3452f99fbf96SAlexander V. Chernikov uint8_t type; 3453f99fbf96SAlexander V. Chernikov 3454f99fbf96SAlexander V. Chernikov IPFW_UH_WLOCK_ASSERT(chain); 3455f99fbf96SAlexander V. Chernikov ni = CHAIN_TO_NI(chain); 3456f99fbf96SAlexander V. Chernikov 3457f99fbf96SAlexander V. Chernikov l = rule->cmd_len; 3458f99fbf96SAlexander V. Chernikov cmd = rule->cmd; 3459f99fbf96SAlexander V. Chernikov cmdlen = 0; 3460f99fbf96SAlexander V. Chernikov for ( ; l > 0 ; l -= cmdlen, cmd += cmdlen) { 3461f99fbf96SAlexander V. Chernikov cmdlen = F_LEN(cmd); 3462f99fbf96SAlexander V. Chernikov 3463f99fbf96SAlexander V. Chernikov if (classify_table_opcode(cmd, &kidx, &type) != 0) 3464f99fbf96SAlexander V. Chernikov continue; 3465f99fbf96SAlexander V. Chernikov 3466f99fbf96SAlexander V. Chernikov no = ipfw_objhash_lookup_kidx(ni, kidx); 3467f99fbf96SAlexander V. Chernikov 3468f99fbf96SAlexander V. Chernikov KASSERT(no != NULL, ("table id %d not found", kidx)); 3469f99fbf96SAlexander V. Chernikov KASSERT(no->type == type, ("wrong type %d (%d) for table id %d", 3470f99fbf96SAlexander V. Chernikov no->type, type, kidx)); 3471f99fbf96SAlexander V. Chernikov KASSERT(no->refcnt > 0, ("refcount for table %d is %d", 3472f99fbf96SAlexander V. Chernikov kidx, no->refcnt)); 3473f99fbf96SAlexander V. Chernikov 3474f99fbf96SAlexander V. Chernikov no->refcnt--; 3475f99fbf96SAlexander V. Chernikov } 3476f99fbf96SAlexander V. Chernikov } 3477f99fbf96SAlexander V. Chernikov 3478f99fbf96SAlexander V. Chernikov /* 3479b074b7bbSAlexander V. Chernikov * Compatibility function for old ipfw(8) binaries. 3480b074b7bbSAlexander V. Chernikov * Rewrites table kernel indices with userland ones. 348135e1bbd0SAlexander V. Chernikov * Convert tables matching '/^\d+$/' to their atoi() value. 348235e1bbd0SAlexander V. Chernikov * Use number 65535 for other tables. 3483b074b7bbSAlexander V. Chernikov * 3484b074b7bbSAlexander V. Chernikov * Returns 0 on success. 3485b074b7bbSAlexander V. Chernikov */ 3486b074b7bbSAlexander V. Chernikov int 34877e767c79SAlexander V. Chernikov ipfw_rewrite_table_kidx(struct ip_fw_chain *chain, struct ip_fw_rule0 *rule) 3488b074b7bbSAlexander V. Chernikov { 34891832a7b3SAlexander V. Chernikov int cmdlen, error, l; 3490b074b7bbSAlexander V. Chernikov ipfw_insn *cmd; 34911832a7b3SAlexander V. Chernikov uint16_t kidx, uidx; 3492b074b7bbSAlexander V. Chernikov uint8_t type; 3493b074b7bbSAlexander V. Chernikov struct named_object *no; 3494b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 3495b074b7bbSAlexander V. Chernikov 3496b074b7bbSAlexander V. Chernikov ni = CHAIN_TO_NI(chain); 34971832a7b3SAlexander V. Chernikov error = 0; 3498b074b7bbSAlexander V. Chernikov 3499b074b7bbSAlexander V. Chernikov l = rule->cmd_len; 3500b074b7bbSAlexander V. Chernikov cmd = rule->cmd; 3501b074b7bbSAlexander V. Chernikov cmdlen = 0; 3502b074b7bbSAlexander V. Chernikov for ( ; l > 0 ; l -= cmdlen, cmd += cmdlen) { 3503b074b7bbSAlexander V. Chernikov cmdlen = F_LEN(cmd); 3504b074b7bbSAlexander V. Chernikov 3505b074b7bbSAlexander V. Chernikov if (classify_table_opcode(cmd, &kidx, &type) != 0) 3506b074b7bbSAlexander V. Chernikov continue; 3507b074b7bbSAlexander V. Chernikov 3508ac35ff17SAlexander V. Chernikov if ((no = ipfw_objhash_lookup_kidx(ni, kidx)) == NULL) 3509b074b7bbSAlexander V. Chernikov return (1); 3510b074b7bbSAlexander V. Chernikov 35111832a7b3SAlexander V. Chernikov uidx = no->uidx; 35121832a7b3SAlexander V. Chernikov if (no->compat == 0) { 3513b074b7bbSAlexander V. Chernikov 35141832a7b3SAlexander V. Chernikov /* 35151832a7b3SAlexander V. Chernikov * We are called via legacy opcode. 35161832a7b3SAlexander V. Chernikov * Save error and show table as fake number 35171832a7b3SAlexander V. Chernikov * not to make ipfw(8) hang. 35181832a7b3SAlexander V. Chernikov */ 35191832a7b3SAlexander V. Chernikov uidx = 65535; 35201832a7b3SAlexander V. Chernikov error = 2; 3521b074b7bbSAlexander V. Chernikov } 3522b074b7bbSAlexander V. Chernikov 35231832a7b3SAlexander V. Chernikov update_table_opcode(cmd, uidx); 35241832a7b3SAlexander V. Chernikov } 35251832a7b3SAlexander V. Chernikov 35261832a7b3SAlexander V. Chernikov return (error); 3527b074b7bbSAlexander V. Chernikov } 3528b074b7bbSAlexander V. Chernikov 3529563b5ab1SAlexander V. Chernikov /* 3530b074b7bbSAlexander V. Chernikov * Checks is opcode is referencing table of appropriate type. 3531b074b7bbSAlexander V. Chernikov * Adds reference count for found table if true. 3532b074b7bbSAlexander V. Chernikov * Rewrites user-supplied opcode values with kernel ones. 3533b074b7bbSAlexander V. Chernikov * 3534b074b7bbSAlexander V. Chernikov * Returns 0 on success and appropriate error code otherwise. 3535b074b7bbSAlexander V. Chernikov */ 3536b074b7bbSAlexander V. Chernikov int 3537b074b7bbSAlexander V. Chernikov ipfw_rewrite_table_uidx(struct ip_fw_chain *chain, 3538b074b7bbSAlexander V. Chernikov struct rule_check_info *ci) 3539b074b7bbSAlexander V. Chernikov { 35400468c5baSAlexander V. Chernikov int cmdlen, error, l; 3541b074b7bbSAlexander V. Chernikov ipfw_insn *cmd; 3542b074b7bbSAlexander V. Chernikov uint16_t uidx; 3543b074b7bbSAlexander V. Chernikov uint8_t type; 3544b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 35459490a627SAlexander V. Chernikov struct obj_idx *p, *pidx_first, *pidx_last; 3546b074b7bbSAlexander V. Chernikov struct tid_info ti; 3547b074b7bbSAlexander V. Chernikov 3548b074b7bbSAlexander V. Chernikov ni = CHAIN_TO_NI(chain); 3549b074b7bbSAlexander V. Chernikov 3550b074b7bbSAlexander V. Chernikov /* 3551b074b7bbSAlexander V. Chernikov * Prepare an array for storing opcode indices. 3552b074b7bbSAlexander V. Chernikov * Use stack allocation by default. 3553b074b7bbSAlexander V. Chernikov */ 3554b074b7bbSAlexander V. Chernikov if (ci->table_opcodes <= (sizeof(ci->obuf)/sizeof(ci->obuf[0]))) { 3555b074b7bbSAlexander V. Chernikov /* Stack */ 35569490a627SAlexander V. Chernikov pidx_first = ci->obuf; 3557b074b7bbSAlexander V. Chernikov } else 35589490a627SAlexander V. Chernikov pidx_first = malloc(ci->table_opcodes * sizeof(struct obj_idx), 3559b074b7bbSAlexander V. Chernikov M_IPFW, M_WAITOK | M_ZERO); 3560b074b7bbSAlexander V. Chernikov 35619490a627SAlexander V. Chernikov pidx_last = pidx_first; 3562b074b7bbSAlexander V. Chernikov error = 0; 3563b074b7bbSAlexander V. Chernikov type = 0; 3564b074b7bbSAlexander V. Chernikov memset(&ti, 0, sizeof(ti)); 35651832a7b3SAlexander V. Chernikov 35661832a7b3SAlexander V. Chernikov /* 35671832a7b3SAlexander V. Chernikov * Use default set for looking up tables (old way) or 35681832a7b3SAlexander V. Chernikov * use set rule is assigned to (new way). 35691832a7b3SAlexander V. Chernikov */ 35701832a7b3SAlexander V. Chernikov ti.set = (V_fw_tables_sets != 0) ? ci->krule->set : 0; 35716c2997ffSAlexander V. Chernikov if (ci->ctlv != NULL) { 35726c2997ffSAlexander V. Chernikov ti.tlvs = (void *)(ci->ctlv + 1); 35736c2997ffSAlexander V. Chernikov ti.tlen = ci->ctlv->head.length - sizeof(ipfw_obj_ctlv); 35746c2997ffSAlexander V. Chernikov } 3575b074b7bbSAlexander V. Chernikov 35760468c5baSAlexander V. Chernikov /* Reference all used tables */ 3577e5eec6ddSAlexander V. Chernikov error = find_ref_rule_tables(chain, ci->krule, ci, &pidx_last, &ti); 35780468c5baSAlexander V. Chernikov if (error != 0) 35799f7d47b0SAlexander V. Chernikov goto free; 3580b074b7bbSAlexander V. Chernikov 35819f7d47b0SAlexander V. Chernikov IPFW_UH_WLOCK(chain); 35829f7d47b0SAlexander V. Chernikov 3583b074b7bbSAlexander V. Chernikov /* Perform rule rewrite */ 3584b074b7bbSAlexander V. Chernikov l = ci->krule->cmd_len; 3585b074b7bbSAlexander V. Chernikov cmd = ci->krule->cmd; 3586b074b7bbSAlexander V. Chernikov cmdlen = 0; 35879490a627SAlexander V. Chernikov p = pidx_first; 3588b074b7bbSAlexander V. Chernikov for ( ; l > 0 ; l -= cmdlen, cmd += cmdlen) { 3589b074b7bbSAlexander V. Chernikov cmdlen = F_LEN(cmd); 3590b074b7bbSAlexander V. Chernikov if (classify_table_opcode(cmd, &uidx, &type) != 0) 3591b074b7bbSAlexander V. Chernikov continue; 35929490a627SAlexander V. Chernikov update_table_opcode(cmd, p->kidx); 35939490a627SAlexander V. Chernikov p++; 3594b074b7bbSAlexander V. Chernikov } 3595b074b7bbSAlexander V. Chernikov 3596b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(chain); 3597b074b7bbSAlexander V. Chernikov 3598b074b7bbSAlexander V. Chernikov free: 35999490a627SAlexander V. Chernikov if (pidx_first != ci->obuf) 36009490a627SAlexander V. Chernikov free(pidx_first, M_IPFW); 3601b074b7bbSAlexander V. Chernikov 3602b074b7bbSAlexander V. Chernikov return (error); 3603b074b7bbSAlexander V. Chernikov } 3604b074b7bbSAlexander V. Chernikov 36056b988f3aSAlexander V. Chernikov static struct ipfw_sopt_handler scodes[] = { 36066b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XCREATE, 0, HDIR_SET, create_table }, 36076b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XDESTROY, 0, HDIR_SET, flush_table_v0 }, 36086b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XFLUSH, 0, HDIR_SET, flush_table_v0 }, 36096b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XMODIFY, 0, HDIR_BOTH, modify_table }, 36106b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XINFO, 0, HDIR_GET, describe_table }, 36116b988f3aSAlexander V. Chernikov { IP_FW_TABLES_XLIST, 0, HDIR_GET, list_tables }, 36126b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XLIST, 0, HDIR_GET, dump_table_v0 }, 36136b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XLIST, 1, HDIR_GET, dump_table_v1 }, 36146b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XADD, 0, HDIR_BOTH, manage_table_ent_v0 }, 36156b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XADD, 1, HDIR_BOTH, manage_table_ent_v1 }, 36166b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XDEL, 0, HDIR_BOTH, manage_table_ent_v0 }, 36176b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XDEL, 1, HDIR_BOTH, manage_table_ent_v1 }, 36186b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XFIND, 0, HDIR_GET, find_table_entry }, 36196b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XSWAP, 0, HDIR_SET, swap_table }, 36206b988f3aSAlexander V. Chernikov { IP_FW_TABLES_ALIST, 0, HDIR_GET, list_table_algo }, 36216b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XGETSIZE, 0, HDIR_GET, get_table_size }, 36226b988f3aSAlexander V. Chernikov }; 36236b988f3aSAlexander V. Chernikov 36246b988f3aSAlexander V. Chernikov static void 36256b988f3aSAlexander V. Chernikov destroy_table_locked(struct namedobj_instance *ni, struct named_object *no, 36266b988f3aSAlexander V. Chernikov void *arg) 36276b988f3aSAlexander V. Chernikov { 36286b988f3aSAlexander V. Chernikov 36296b988f3aSAlexander V. Chernikov unlink_table((struct ip_fw_chain *)arg, (struct table_config *)no); 36306b988f3aSAlexander V. Chernikov if (ipfw_objhash_free_idx(ni, no->kidx) != 0) 36316b988f3aSAlexander V. Chernikov printf("Error unlinking kidx %d from table %s\n", 36326b988f3aSAlexander V. Chernikov no->kidx, no->name); 36336b988f3aSAlexander V. Chernikov free_table_config(ni, (struct table_config *)no); 36346b988f3aSAlexander V. Chernikov } 36356b988f3aSAlexander V. Chernikov 36366b988f3aSAlexander V. Chernikov /* 36376b988f3aSAlexander V. Chernikov * Shuts tables module down. 36386b988f3aSAlexander V. Chernikov */ 36396b988f3aSAlexander V. Chernikov void 36406b988f3aSAlexander V. Chernikov ipfw_destroy_tables(struct ip_fw_chain *ch, int last) 36416b988f3aSAlexander V. Chernikov { 36426b988f3aSAlexander V. Chernikov 36436b988f3aSAlexander V. Chernikov IPFW_DEL_SOPT_HANDLER(last, scodes); 36446b988f3aSAlexander V. Chernikov 36456b988f3aSAlexander V. Chernikov /* Remove all tables from working set */ 36466b988f3aSAlexander V. Chernikov IPFW_UH_WLOCK(ch); 36476b988f3aSAlexander V. Chernikov IPFW_WLOCK(ch); 36486b988f3aSAlexander V. Chernikov ipfw_objhash_foreach(CHAIN_TO_NI(ch), destroy_table_locked, ch); 36496b988f3aSAlexander V. Chernikov IPFW_WUNLOCK(ch); 36506b988f3aSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 36516b988f3aSAlexander V. Chernikov 36526b988f3aSAlexander V. Chernikov /* Free pointers itself */ 36536b988f3aSAlexander V. Chernikov free(ch->tablestate, M_IPFW); 36546b988f3aSAlexander V. Chernikov 36556b988f3aSAlexander V. Chernikov ipfw_table_value_destroy(ch, last); 36566b988f3aSAlexander V. Chernikov ipfw_table_algo_destroy(ch); 36576b988f3aSAlexander V. Chernikov 36586b988f3aSAlexander V. Chernikov ipfw_objhash_destroy(CHAIN_TO_NI(ch)); 36596b988f3aSAlexander V. Chernikov free(CHAIN_TO_TCFG(ch), M_IPFW); 36606b988f3aSAlexander V. Chernikov } 36616b988f3aSAlexander V. Chernikov 36626b988f3aSAlexander V. Chernikov /* 36636b988f3aSAlexander V. Chernikov * Starts tables module. 36646b988f3aSAlexander V. Chernikov */ 36656b988f3aSAlexander V. Chernikov int 36666b988f3aSAlexander V. Chernikov ipfw_init_tables(struct ip_fw_chain *ch, int first) 36676b988f3aSAlexander V. Chernikov { 36686b988f3aSAlexander V. Chernikov struct tables_config *tcfg; 36696b988f3aSAlexander V. Chernikov 36706b988f3aSAlexander V. Chernikov /* Allocate pointers */ 36716b988f3aSAlexander V. Chernikov ch->tablestate = malloc(V_fw_tables_max * sizeof(struct table_info), 36726b988f3aSAlexander V. Chernikov M_IPFW, M_WAITOK | M_ZERO); 36736b988f3aSAlexander V. Chernikov 36746b988f3aSAlexander V. Chernikov tcfg = malloc(sizeof(struct tables_config), M_IPFW, M_WAITOK | M_ZERO); 36756b988f3aSAlexander V. Chernikov tcfg->namehash = ipfw_objhash_create(V_fw_tables_max); 36766b988f3aSAlexander V. Chernikov ch->tblcfg = tcfg; 36776b988f3aSAlexander V. Chernikov 36786b988f3aSAlexander V. Chernikov ipfw_table_value_init(ch, first); 36796b988f3aSAlexander V. Chernikov ipfw_table_algo_init(ch); 36806b988f3aSAlexander V. Chernikov 36816b988f3aSAlexander V. Chernikov IPFW_ADD_SOPT_HANDLER(first, scodes); 36826b988f3aSAlexander V. Chernikov return (0); 36836b988f3aSAlexander V. Chernikov } 36846b988f3aSAlexander V. Chernikov 36856b988f3aSAlexander V. Chernikov 36866b988f3aSAlexander V. Chernikov 3687