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 9274b22066SAlexander V. Chernikov static int find_table_err(struct namedobj_instance *ni, struct tid_info *ti, 9374b22066SAlexander V. Chernikov struct table_config **tc); 94b074b7bbSAlexander V. Chernikov static struct table_config *find_table(struct namedobj_instance *ni, 95b074b7bbSAlexander V. Chernikov struct tid_info *ti); 9668394ec8SAlexander V. Chernikov static struct table_config *alloc_table_config(struct ip_fw_chain *ch, 970cba2b28SAlexander V. Chernikov struct tid_info *ti, struct table_algo *ta, char *adata, uint8_t tflags); 98b074b7bbSAlexander V. Chernikov static void free_table_config(struct namedobj_instance *ni, 99b074b7bbSAlexander V. Chernikov struct table_config *tc); 100db785d31SAlexander V. Chernikov static int create_table_internal(struct ip_fw_chain *ch, struct tid_info *ti, 101867708f7SAlexander V. Chernikov char *aname, ipfw_xtable_info *i, uint16_t *pkidx, int ref); 1020468c5baSAlexander V. Chernikov static void link_table(struct ip_fw_chain *ch, struct table_config *tc); 1030468c5baSAlexander V. Chernikov static void unlink_table(struct ip_fw_chain *ch, struct table_config *tc); 1044dff4ae0SAlexander V. Chernikov static int find_ref_table(struct ip_fw_chain *ch, struct tid_info *ti, 105867708f7SAlexander V. Chernikov struct tentry_info *tei, uint32_t count, int op, struct table_config **ptc); 1064dff4ae0SAlexander V. Chernikov #define OP_ADD 1 1074dff4ae0SAlexander V. Chernikov #define OP_DEL 0 1082d99a349SAlexander V. Chernikov static int export_tables(struct ip_fw_chain *ch, ipfw_obj_lheader *olh, 1092d99a349SAlexander V. Chernikov struct sockopt_data *sd); 110ac35ff17SAlexander V. Chernikov static void export_table_info(struct ip_fw_chain *ch, struct table_config *tc, 111ac35ff17SAlexander V. Chernikov ipfw_xtable_info *i); 11281d3153dSAlexander V. Chernikov static int dump_table_tentry(void *e, void *arg); 113f1220db8SAlexander V. Chernikov static int dump_table_xentry(void *e, void *arg); 114b074b7bbSAlexander V. Chernikov 115a73d728dSAlexander V. Chernikov static int swap_tables(struct ip_fw_chain *ch, struct tid_info *a, 11646d52008SAlexander V. Chernikov struct tid_info *b); 117ac35ff17SAlexander V. Chernikov 118f81431ccSAndrey V. Elsukov static int check_table_name(const char *name); 1190cba2b28SAlexander V. Chernikov static int check_table_space(struct ip_fw_chain *ch, struct tableop_state *ts, 1200cba2b28SAlexander V. Chernikov struct table_config *tc, struct table_info *ti, uint32_t count); 121ac35ff17SAlexander V. Chernikov static int destroy_table(struct ip_fw_chain *ch, struct tid_info *ti); 122d3a4f924SAlexander V. Chernikov 1239f7d47b0SAlexander V. Chernikov static struct table_algo *find_table_algo(struct tables_config *tableconf, 1249490a627SAlexander V. Chernikov struct tid_info *ti, char *name); 125b074b7bbSAlexander V. Chernikov 12646d52008SAlexander V. Chernikov static void objheader_to_ti(struct _ipfw_obj_header *oh, struct tid_info *ti); 12746d52008SAlexander V. Chernikov static void ntlv_to_ti(struct _ipfw_obj_ntlv *ntlv, struct tid_info *ti); 12846d52008SAlexander V. Chernikov 129b074b7bbSAlexander V. Chernikov #define CHAIN_TO_NI(chain) (CHAIN_TO_TCFG(chain)->namehash) 1309f7d47b0SAlexander V. Chernikov #define KIDX_TO_TI(ch, k) (&(((struct table_info *)(ch)->tablestate)[k])) 131b074b7bbSAlexander V. Chernikov 132b6ee846eSAlexander V. Chernikov #define TA_BUF_SZ 128 /* On-stack buffer for add/delete state */ 133b6ee846eSAlexander V. Chernikov 1340cba2b28SAlexander V. Chernikov void 1350cba2b28SAlexander V. Chernikov rollback_toperation_state(struct ip_fw_chain *ch, void *object) 1360cba2b28SAlexander V. Chernikov { 1370cba2b28SAlexander V. Chernikov struct tables_config *tcfg; 1380cba2b28SAlexander V. Chernikov struct op_state *os; 1390cba2b28SAlexander V. Chernikov 1400cba2b28SAlexander V. Chernikov tcfg = CHAIN_TO_TCFG(ch); 1410cba2b28SAlexander V. Chernikov TAILQ_FOREACH(os, &tcfg->state_list, next) 142fb4b37a3SAlexander V. Chernikov os->func(object, os); 1430cba2b28SAlexander V. Chernikov } 1440cba2b28SAlexander V. Chernikov 1450cba2b28SAlexander V. Chernikov void 1460cba2b28SAlexander V. Chernikov add_toperation_state(struct ip_fw_chain *ch, struct tableop_state *ts) 1470cba2b28SAlexander V. Chernikov { 1480cba2b28SAlexander V. Chernikov struct tables_config *tcfg; 1490cba2b28SAlexander V. Chernikov 1500cba2b28SAlexander V. Chernikov tcfg = CHAIN_TO_TCFG(ch); 1510cba2b28SAlexander V. Chernikov TAILQ_INSERT_HEAD(&tcfg->state_list, &ts->opstate, next); 1520cba2b28SAlexander V. Chernikov } 1530cba2b28SAlexander V. Chernikov 1540cba2b28SAlexander V. Chernikov void 1550cba2b28SAlexander V. Chernikov del_toperation_state(struct ip_fw_chain *ch, struct tableop_state *ts) 1560cba2b28SAlexander V. Chernikov { 1570cba2b28SAlexander V. Chernikov struct tables_config *tcfg; 1580cba2b28SAlexander V. Chernikov 1590cba2b28SAlexander V. Chernikov tcfg = CHAIN_TO_TCFG(ch); 1600cba2b28SAlexander V. Chernikov TAILQ_REMOVE(&tcfg->state_list, &ts->opstate, next); 1610cba2b28SAlexander V. Chernikov } 1620cba2b28SAlexander V. Chernikov 1630cba2b28SAlexander V. Chernikov void 1640cba2b28SAlexander V. Chernikov tc_ref(struct table_config *tc) 1650cba2b28SAlexander V. Chernikov { 1660cba2b28SAlexander V. Chernikov 1670cba2b28SAlexander V. Chernikov tc->no.refcnt++; 1680cba2b28SAlexander V. Chernikov } 1690cba2b28SAlexander V. Chernikov 1700cba2b28SAlexander V. Chernikov void 1710cba2b28SAlexander V. Chernikov tc_unref(struct table_config *tc) 1720cba2b28SAlexander V. Chernikov { 1730cba2b28SAlexander V. Chernikov 1740cba2b28SAlexander V. Chernikov tc->no.refcnt--; 1750cba2b28SAlexander V. Chernikov } 1760cba2b28SAlexander V. Chernikov 1770cba2b28SAlexander V. Chernikov static struct table_value * 1780cba2b28SAlexander V. Chernikov get_table_value(struct ip_fw_chain *ch, struct table_config *tc, uint32_t kidx) 1790cba2b28SAlexander V. Chernikov { 1800cba2b28SAlexander V. Chernikov struct table_value *pval; 1810cba2b28SAlexander V. Chernikov 1820cba2b28SAlexander V. Chernikov pval = (struct table_value *)ch->valuestate; 1830cba2b28SAlexander V. Chernikov 1840cba2b28SAlexander V. Chernikov return (&pval[kidx]); 1850cba2b28SAlexander V. Chernikov } 1860cba2b28SAlexander V. Chernikov 1870cba2b28SAlexander V. Chernikov 1883a845e10SAlexander V. Chernikov /* 1893a845e10SAlexander V. Chernikov * Checks if we're able to insert/update entry @tei into table 1903a845e10SAlexander V. Chernikov * w.r.t @tc limits. 1913a845e10SAlexander V. Chernikov * May alter @tei to indicate insertion error / insert 1923a845e10SAlexander V. Chernikov * options. 1933a845e10SAlexander V. Chernikov * 1943a845e10SAlexander V. Chernikov * Returns 0 if operation can be performed/ 1953a845e10SAlexander V. Chernikov */ 1963a845e10SAlexander V. Chernikov static int 1973a845e10SAlexander V. Chernikov check_table_limit(struct table_config *tc, struct tentry_info *tei) 1983a845e10SAlexander V. Chernikov { 199b074b7bbSAlexander V. Chernikov 2003a845e10SAlexander V. Chernikov if (tc->limit == 0 || tc->count < tc->limit) 2013a845e10SAlexander V. Chernikov return (0); 2023a845e10SAlexander V. Chernikov 2033a845e10SAlexander V. Chernikov if ((tei->flags & TEI_FLAGS_UPDATE) == 0) { 2043a845e10SAlexander V. Chernikov /* Notify userland on error cause */ 2053a845e10SAlexander V. Chernikov tei->flags |= TEI_FLAGS_LIMIT; 2063a845e10SAlexander V. Chernikov return (EFBIG); 2073a845e10SAlexander V. Chernikov } 2083a845e10SAlexander V. Chernikov 2093a845e10SAlexander V. Chernikov /* 2103a845e10SAlexander V. Chernikov * We have UPDATE flag set. 2113a845e10SAlexander V. Chernikov * Permit updating record (if found), 2123a845e10SAlexander V. Chernikov * but restrict adding new one since we've 2133a845e10SAlexander V. Chernikov * already hit the limit. 2143a845e10SAlexander V. Chernikov */ 2153a845e10SAlexander V. Chernikov tei->flags |= TEI_FLAGS_DONTADD; 2163a845e10SAlexander V. Chernikov 2173a845e10SAlexander V. Chernikov return (0); 2183a845e10SAlexander V. Chernikov } 2193a845e10SAlexander V. Chernikov 2203a845e10SAlexander V. Chernikov /* 2211bc0d457SAlexander V. Chernikov * Convert algorithm callback return code into 2221bc0d457SAlexander V. Chernikov * one of pre-defined states known by userland. 2233a845e10SAlexander V. Chernikov */ 2241bc0d457SAlexander V. Chernikov static void 225867708f7SAlexander V. Chernikov store_tei_result(struct tentry_info *tei, int op, int error, uint32_t num) 2263b3a8eb9SGleb Smirnoff { 2271bc0d457SAlexander V. Chernikov int flag; 2283b3a8eb9SGleb Smirnoff 2291bc0d457SAlexander V. Chernikov flag = 0; 2301bc0d457SAlexander V. Chernikov 2311bc0d457SAlexander V. Chernikov switch (error) { 2321bc0d457SAlexander V. Chernikov case 0: 233867708f7SAlexander V. Chernikov if (op == OP_ADD && num != 0) 2341bc0d457SAlexander V. Chernikov flag = TEI_FLAGS_ADDED; 235867708f7SAlexander V. Chernikov if (op == OP_DEL) 2361bc0d457SAlexander V. Chernikov flag = TEI_FLAGS_DELETED; 2371bc0d457SAlexander V. Chernikov break; 2381bc0d457SAlexander V. Chernikov case ENOENT: 2391bc0d457SAlexander V. Chernikov flag = TEI_FLAGS_NOTFOUND; 2401bc0d457SAlexander V. Chernikov break; 2411bc0d457SAlexander V. Chernikov case EEXIST: 2421bc0d457SAlexander V. Chernikov flag = TEI_FLAGS_EXISTS; 2431bc0d457SAlexander V. Chernikov break; 2441bc0d457SAlexander V. Chernikov default: 2451bc0d457SAlexander V. Chernikov flag = TEI_FLAGS_ERROR; 2461bc0d457SAlexander V. Chernikov } 2471bc0d457SAlexander V. Chernikov 2481bc0d457SAlexander V. Chernikov tei->flags |= flag; 2491bc0d457SAlexander V. Chernikov } 2509f7d47b0SAlexander V. Chernikov 251f99fbf96SAlexander V. Chernikov /* 252f99fbf96SAlexander V. Chernikov * Creates and references table with default parameters. 253f99fbf96SAlexander V. Chernikov * Saves table config, algo and allocated kidx info @ptc, @pta and 254f99fbf96SAlexander V. Chernikov * @pkidx if non-zero. 255f99fbf96SAlexander V. Chernikov * Used for table auto-creation to support old binaries. 256f99fbf96SAlexander V. Chernikov * 257f99fbf96SAlexander V. Chernikov * Returns 0 on success. 258f99fbf96SAlexander V. Chernikov */ 2590468c5baSAlexander V. Chernikov static int 2600468c5baSAlexander V. Chernikov create_table_compat(struct ip_fw_chain *ch, struct tid_info *ti, 261867708f7SAlexander V. Chernikov uint16_t *pkidx) 2620468c5baSAlexander V. Chernikov { 2630468c5baSAlexander V. Chernikov ipfw_xtable_info xi; 2640468c5baSAlexander V. Chernikov int error; 2650468c5baSAlexander V. Chernikov 2660468c5baSAlexander V. Chernikov memset(&xi, 0, sizeof(xi)); 2670cba2b28SAlexander V. Chernikov /* Set default value mask for legacy clients */ 2680cba2b28SAlexander V. Chernikov xi.vmask = IPFW_VTYPE_LEGACY; 2690468c5baSAlexander V. Chernikov 270867708f7SAlexander V. Chernikov error = create_table_internal(ch, ti, NULL, &xi, pkidx, 1); 2710468c5baSAlexander V. Chernikov if (error != 0) 2720468c5baSAlexander V. Chernikov return (error); 2730468c5baSAlexander V. Chernikov 2740468c5baSAlexander V. Chernikov return (0); 2750468c5baSAlexander V. Chernikov } 2760468c5baSAlexander V. Chernikov 2779f7d47b0SAlexander V. Chernikov /* 2781bc0d457SAlexander V. Chernikov * Find and reference existing table optionally 2791bc0d457SAlexander V. Chernikov * creating new one. 2801bc0d457SAlexander V. Chernikov * 281867708f7SAlexander V. Chernikov * Saves found table config into @ptc. 282867708f7SAlexander V. Chernikov * Note function may drop/acquire UH_WLOCK. 2831bc0d457SAlexander V. Chernikov * Returns 0 if table was found/created and referenced 2841bc0d457SAlexander V. Chernikov * or non-zero return code. 2859f7d47b0SAlexander V. Chernikov */ 2861bc0d457SAlexander V. Chernikov static int 2871bc0d457SAlexander V. Chernikov find_ref_table(struct ip_fw_chain *ch, struct tid_info *ti, 2884dff4ae0SAlexander V. Chernikov struct tentry_info *tei, uint32_t count, int op, 289867708f7SAlexander V. Chernikov struct table_config **ptc) 2901bc0d457SAlexander V. Chernikov { 2911bc0d457SAlexander V. Chernikov struct namedobj_instance *ni; 2921bc0d457SAlexander V. Chernikov struct table_config *tc; 293867708f7SAlexander V. Chernikov uint16_t kidx; 2941bc0d457SAlexander V. Chernikov int error; 2951bc0d457SAlexander V. Chernikov 296867708f7SAlexander V. Chernikov IPFW_UH_WLOCK_ASSERT(ch); 2971bc0d457SAlexander V. Chernikov 2981bc0d457SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 2991bc0d457SAlexander V. Chernikov tc = NULL; 3009f7d47b0SAlexander V. Chernikov if ((tc = find_table(ni, ti)) != NULL) { 3019f7d47b0SAlexander V. Chernikov /* check table type */ 30274b22066SAlexander V. Chernikov if (tc->no.subtype != ti->type) 3033b3a8eb9SGleb Smirnoff return (EINVAL); 3043b3a8eb9SGleb Smirnoff 305867708f7SAlexander V. Chernikov if (tc->locked != 0) 3064f43138aSAlexander V. Chernikov return (EACCES); 3074f43138aSAlexander V. Chernikov 3084c0c07a5SAlexander V. Chernikov /* Try to exit early on limit hit */ 3094dff4ae0SAlexander V. Chernikov if (op == OP_ADD && count == 1 && 310867708f7SAlexander V. Chernikov check_table_limit(tc, tei) != 0) 3114c0c07a5SAlexander V. Chernikov return (EFBIG); 3124c0c07a5SAlexander V. Chernikov 313867708f7SAlexander V. Chernikov /* Reference and return */ 3149f7d47b0SAlexander V. Chernikov tc->no.refcnt++; 315867708f7SAlexander V. Chernikov *ptc = tc; 316867708f7SAlexander V. Chernikov return (0); 3179f7d47b0SAlexander V. Chernikov } 3183b3a8eb9SGleb Smirnoff 3194dff4ae0SAlexander V. Chernikov if (op == OP_DEL) 3201bc0d457SAlexander V. Chernikov return (ESRCH); 3211bc0d457SAlexander V. Chernikov 322a4641f4eSPedro F. Giffuni /* Compatibility mode: create new table for old clients */ 323db785d31SAlexander V. Chernikov if ((tei->flags & TEI_FLAGS_COMPAT) == 0) 324db785d31SAlexander V. Chernikov return (ESRCH); 3253b3a8eb9SGleb Smirnoff 326867708f7SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 327867708f7SAlexander V. Chernikov error = create_table_compat(ch, ti, &kidx); 328867708f7SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 329867708f7SAlexander V. Chernikov 330db785d31SAlexander V. Chernikov if (error != 0) 331db785d31SAlexander V. Chernikov return (error); 332db785d31SAlexander V. Chernikov 333867708f7SAlexander V. Chernikov tc = (struct table_config *)ipfw_objhash_lookup_kidx(ni, kidx); 334867708f7SAlexander V. Chernikov KASSERT(tc != NULL, ("create_table_compat returned bad idx %d", kidx)); 335db785d31SAlexander V. Chernikov 336867708f7SAlexander V. Chernikov /* OK, now we've got referenced table. */ 3371bc0d457SAlexander V. Chernikov *ptc = tc; 3381bc0d457SAlexander V. Chernikov return (0); 3391bc0d457SAlexander V. Chernikov } 3401bc0d457SAlexander V. Chernikov 3411bc0d457SAlexander V. Chernikov /* 342867708f7SAlexander V. Chernikov * Rolls back already @added to @tc entries using state array @ta_buf_m. 3431bc0d457SAlexander V. Chernikov * Assume the following layout: 3441bc0d457SAlexander V. Chernikov * 1) ADD state (ta_buf_m[0] ... t_buf_m[added - 1]) for handling update cases 3451bc0d457SAlexander V. Chernikov * 2) DEL state (ta_buf_m[count[ ... t_buf_m[count + added - 1]) 3461bc0d457SAlexander V. Chernikov * for storing deleted state 3471bc0d457SAlexander V. Chernikov */ 3481bc0d457SAlexander V. Chernikov static void 3491bc0d457SAlexander V. Chernikov rollback_added_entries(struct ip_fw_chain *ch, struct table_config *tc, 3501bc0d457SAlexander V. Chernikov struct table_info *tinfo, struct tentry_info *tei, caddr_t ta_buf_m, 3511bc0d457SAlexander V. Chernikov uint32_t count, uint32_t added) 3521bc0d457SAlexander V. Chernikov { 3531bc0d457SAlexander V. Chernikov struct table_algo *ta; 3541bc0d457SAlexander V. Chernikov struct tentry_info *ptei; 3551bc0d457SAlexander V. Chernikov caddr_t v, vv; 3561bc0d457SAlexander V. Chernikov size_t ta_buf_sz; 3571bc0d457SAlexander V. Chernikov int error, i; 3581bc0d457SAlexander V. Chernikov uint32_t num; 3591bc0d457SAlexander V. Chernikov 3601bc0d457SAlexander V. Chernikov IPFW_UH_WLOCK_ASSERT(ch); 3611bc0d457SAlexander V. Chernikov 3621bc0d457SAlexander V. Chernikov ta = tc->ta; 3633a845e10SAlexander V. Chernikov ta_buf_sz = ta->ta_buf_size; 3641bc0d457SAlexander V. Chernikov v = ta_buf_m; 3651bc0d457SAlexander V. Chernikov vv = v + count * ta_buf_sz; 3661bc0d457SAlexander V. Chernikov for (i = 0; i < added; i++, v += ta_buf_sz, vv += ta_buf_sz) { 3671bc0d457SAlexander V. Chernikov ptei = &tei[i]; 3681bc0d457SAlexander V. Chernikov if ((ptei->flags & TEI_FLAGS_UPDATED) != 0) { 3691bc0d457SAlexander V. Chernikov 3701bc0d457SAlexander V. Chernikov /* 3711bc0d457SAlexander V. Chernikov * We have old value stored by previous 3721bc0d457SAlexander V. Chernikov * call in @ptei->value. Do add once again 3731bc0d457SAlexander V. Chernikov * to restore it. 3741bc0d457SAlexander V. Chernikov */ 3751bc0d457SAlexander V. Chernikov error = ta->add(tc->astate, tinfo, ptei, v, &num); 3761bc0d457SAlexander V. Chernikov KASSERT(error == 0, ("rollback UPDATE fail")); 3771bc0d457SAlexander V. Chernikov KASSERT(num == 0, ("rollback UPDATE fail2")); 3781bc0d457SAlexander V. Chernikov continue; 3791bc0d457SAlexander V. Chernikov } 3801bc0d457SAlexander V. Chernikov 3811bc0d457SAlexander V. Chernikov error = ta->prepare_del(ch, ptei, vv); 3821bc0d457SAlexander V. Chernikov KASSERT(error == 0, ("pre-rollback INSERT failed")); 3831bc0d457SAlexander V. Chernikov error = ta->del(tc->astate, tinfo, ptei, vv, &num); 3841bc0d457SAlexander V. Chernikov KASSERT(error == 0, ("rollback INSERT failed")); 3851bc0d457SAlexander V. Chernikov tc->count -= num; 3861bc0d457SAlexander V. Chernikov } 3871bc0d457SAlexander V. Chernikov } 3881bc0d457SAlexander V. Chernikov 3891bc0d457SAlexander V. Chernikov /* 3901bc0d457SAlexander V. Chernikov * Prepares add/del state for all @count entries in @tei. 3911bc0d457SAlexander V. Chernikov * Uses either stack buffer (@ta_buf) or allocates a new one. 3921bc0d457SAlexander V. Chernikov * Stores pointer to allocated buffer back to @ta_buf. 3931bc0d457SAlexander V. Chernikov * 3941bc0d457SAlexander V. Chernikov * Returns 0 on success. 3951bc0d457SAlexander V. Chernikov */ 3961bc0d457SAlexander V. Chernikov static int 3971bc0d457SAlexander V. Chernikov prepare_batch_buffer(struct ip_fw_chain *ch, struct table_algo *ta, 3984dff4ae0SAlexander V. Chernikov struct tentry_info *tei, uint32_t count, int op, caddr_t *ta_buf) 3991bc0d457SAlexander V. Chernikov { 4001bc0d457SAlexander V. Chernikov caddr_t ta_buf_m, v; 4011bc0d457SAlexander V. Chernikov size_t ta_buf_sz, sz; 4021bc0d457SAlexander V. Chernikov struct tentry_info *ptei; 4031bc0d457SAlexander V. Chernikov int error, i; 4041bc0d457SAlexander V. Chernikov 4051bc0d457SAlexander V. Chernikov error = 0; 4061bc0d457SAlexander V. Chernikov ta_buf_sz = ta->ta_buf_size; 4073a845e10SAlexander V. Chernikov if (count == 1) { 4081bc0d457SAlexander V. Chernikov /* Sigle add/delete, use on-stack buffer */ 4091bc0d457SAlexander V. Chernikov memset(*ta_buf, 0, TA_BUF_SZ); 4101bc0d457SAlexander V. Chernikov ta_buf_m = *ta_buf; 4113a845e10SAlexander V. Chernikov } else { 4123a845e10SAlexander V. Chernikov 4133a845e10SAlexander V. Chernikov /* 4141bc0d457SAlexander V. Chernikov * Multiple adds/deletes, allocate larger buffer 4151bc0d457SAlexander V. Chernikov * 4161bc0d457SAlexander V. Chernikov * Note we need 2xcount buffer for add case: 4171bc0d457SAlexander V. Chernikov * we have hold both ADD state 4183a845e10SAlexander V. Chernikov * and DELETE state (this may be needed 4193a845e10SAlexander V. Chernikov * if we need to rollback all changes) 4203a845e10SAlexander V. Chernikov */ 4211bc0d457SAlexander V. Chernikov sz = count * ta_buf_sz; 4224dff4ae0SAlexander V. Chernikov ta_buf_m = malloc((op == OP_ADD) ? sz * 2 : sz, M_TEMP, 4233a845e10SAlexander V. Chernikov M_WAITOK | M_ZERO); 4243a845e10SAlexander V. Chernikov } 4251bc0d457SAlexander V. Chernikov 4263a845e10SAlexander V. Chernikov v = ta_buf_m; 4273a845e10SAlexander V. Chernikov for (i = 0; i < count; i++, v += ta_buf_sz) { 4281bc0d457SAlexander V. Chernikov ptei = &tei[i]; 4294dff4ae0SAlexander V. Chernikov error = (op == OP_ADD) ? 4301bc0d457SAlexander V. Chernikov ta->prepare_add(ch, ptei, v) : ta->prepare_del(ch, ptei, v); 4313a845e10SAlexander V. Chernikov 4323a845e10SAlexander V. Chernikov /* 4333a845e10SAlexander V. Chernikov * Some syntax error (incorrect mask, or address, or 4343a845e10SAlexander V. Chernikov * anything). Return error regardless of atomicity 4353a845e10SAlexander V. Chernikov * settings. 4363a845e10SAlexander V. Chernikov */ 437db785d31SAlexander V. Chernikov if (error != 0) 4381bc0d457SAlexander V. Chernikov break; 4393a845e10SAlexander V. Chernikov } 4403b3a8eb9SGleb Smirnoff 4411bc0d457SAlexander V. Chernikov *ta_buf = ta_buf_m; 4421bc0d457SAlexander V. Chernikov return (error); 4431bc0d457SAlexander V. Chernikov } 4441bc0d457SAlexander V. Chernikov 4451bc0d457SAlexander V. Chernikov /* 4461bc0d457SAlexander V. Chernikov * Flushes allocated state for each @count entries in @tei. 4471bc0d457SAlexander V. Chernikov * Frees @ta_buf_m if differs from stack buffer @ta_buf. 4481bc0d457SAlexander V. Chernikov */ 4491bc0d457SAlexander V. Chernikov static void 4501bc0d457SAlexander V. Chernikov flush_batch_buffer(struct ip_fw_chain *ch, struct table_algo *ta, 451867708f7SAlexander V. Chernikov struct tentry_info *tei, uint32_t count, int rollback, 4521bc0d457SAlexander V. Chernikov caddr_t ta_buf_m, caddr_t ta_buf) 4531bc0d457SAlexander V. Chernikov { 4541bc0d457SAlexander V. Chernikov caddr_t v; 4550cba2b28SAlexander V. Chernikov struct tentry_info *ptei; 4561bc0d457SAlexander V. Chernikov size_t ta_buf_sz; 4571bc0d457SAlexander V. Chernikov int i; 4581bc0d457SAlexander V. Chernikov 4591bc0d457SAlexander V. Chernikov ta_buf_sz = ta->ta_buf_size; 4601bc0d457SAlexander V. Chernikov 4611bc0d457SAlexander V. Chernikov /* Run cleaning callback anyway */ 4621bc0d457SAlexander V. Chernikov v = ta_buf_m; 4630cba2b28SAlexander V. Chernikov for (i = 0; i < count; i++, v += ta_buf_sz) { 4640cba2b28SAlexander V. Chernikov ptei = &tei[i]; 4650cba2b28SAlexander V. Chernikov ta->flush_entry(ch, ptei, v); 4660cba2b28SAlexander V. Chernikov if (ptei->ptv != NULL) { 4670cba2b28SAlexander V. Chernikov free(ptei->ptv, M_IPFW); 4680cba2b28SAlexander V. Chernikov ptei->ptv = NULL; 4690cba2b28SAlexander V. Chernikov } 4700cba2b28SAlexander V. Chernikov } 4711bc0d457SAlexander V. Chernikov 4721bc0d457SAlexander V. Chernikov /* Clean up "deleted" state in case of rollback */ 4731bc0d457SAlexander V. Chernikov if (rollback != 0) { 4741bc0d457SAlexander V. Chernikov v = ta_buf_m + count * ta_buf_sz; 4751bc0d457SAlexander V. Chernikov for (i = 0; i < count; i++, v += ta_buf_sz) 4761bc0d457SAlexander V. Chernikov ta->flush_entry(ch, &tei[i], v); 4771bc0d457SAlexander V. Chernikov } 4781bc0d457SAlexander V. Chernikov 4791bc0d457SAlexander V. Chernikov if (ta_buf_m != ta_buf) 4801bc0d457SAlexander V. Chernikov free(ta_buf_m, M_TEMP); 4811bc0d457SAlexander V. Chernikov } 4821bc0d457SAlexander V. Chernikov 48371af39bfSAlexander V. Chernikov 48471af39bfSAlexander V. Chernikov static void 48571af39bfSAlexander V. Chernikov rollback_add_entry(void *object, struct op_state *_state) 48671af39bfSAlexander V. Chernikov { 48771af39bfSAlexander V. Chernikov struct ip_fw_chain *ch; 48871af39bfSAlexander V. Chernikov struct tableop_state *ts; 48971af39bfSAlexander V. Chernikov 49071af39bfSAlexander V. Chernikov ts = (struct tableop_state *)_state; 49171af39bfSAlexander V. Chernikov 49271af39bfSAlexander V. Chernikov if (ts->tc != object && ts->ch != object) 49371af39bfSAlexander V. Chernikov return; 49471af39bfSAlexander V. Chernikov 49571af39bfSAlexander V. Chernikov ch = ts->ch; 49671af39bfSAlexander V. Chernikov 49771af39bfSAlexander V. Chernikov IPFW_UH_WLOCK_ASSERT(ch); 49871af39bfSAlexander V. Chernikov 49971af39bfSAlexander V. Chernikov /* Call specifid unlockers */ 50071af39bfSAlexander V. Chernikov rollback_table_values(ts); 50171af39bfSAlexander V. Chernikov 50271af39bfSAlexander V. Chernikov /* Indicate we've called */ 50371af39bfSAlexander V. Chernikov ts->modified = 1; 50471af39bfSAlexander V. Chernikov } 50571af39bfSAlexander V. Chernikov 5061bc0d457SAlexander V. Chernikov /* 5071bc0d457SAlexander V. Chernikov * Adds/updates one or more entries in table @ti. 50871af39bfSAlexander V. Chernikov * 50971af39bfSAlexander V. Chernikov * Function may drop/reacquire UH wlock multiple times due to 51071af39bfSAlexander V. Chernikov * items alloc, algorithm callbacks (check_space), value linkage 51171af39bfSAlexander V. Chernikov * (new values, value storage realloc), etc.. 51271af39bfSAlexander V. Chernikov * Other processes like other adds (which may involve storage resize), 51371af39bfSAlexander V. Chernikov * table swaps (which changes table data and may change algo type), 51471af39bfSAlexander V. Chernikov * table modify (which may change value mask) may be executed 51571af39bfSAlexander V. Chernikov * simultaneously so we need to deal with it. 51671af39bfSAlexander V. Chernikov * 51771af39bfSAlexander V. Chernikov * The following approach was implemented: 51871af39bfSAlexander V. Chernikov * we have per-chain linked list, protected with UH lock. 51971af39bfSAlexander V. Chernikov * add_table_entry prepares special on-stack structure wthich is passed 52071af39bfSAlexander V. Chernikov * to its descendants. Users add this structure to this list before unlock. 52171af39bfSAlexander V. Chernikov * After performing needed operations and acquiring UH lock back, each user 52271af39bfSAlexander V. Chernikov * checks if structure has changed. If true, it rolls local state back and 52371af39bfSAlexander V. Chernikov * returns without error to the caller. 52471af39bfSAlexander V. Chernikov * add_table_entry() on its own checks if structure has changed and restarts 52571af39bfSAlexander V. Chernikov * its operation from the beginning (goto restart). 52671af39bfSAlexander V. Chernikov * 52771af39bfSAlexander V. Chernikov * Functions which are modifying fields of interest (currently 52871af39bfSAlexander V. Chernikov * resize_shared_value_storage() and swap_tables() ) 52971af39bfSAlexander V. Chernikov * traverses given list while holding UH lock immediately before 53071af39bfSAlexander V. Chernikov * performing their operations calling function provided be list entry 53171af39bfSAlexander V. Chernikov * ( currently rollback_add_entry ) which performs rollback for all necessary 53271af39bfSAlexander V. Chernikov * state and sets appropriate values in structure indicating rollback 53371af39bfSAlexander V. Chernikov * has happened. 53471af39bfSAlexander V. Chernikov * 53571af39bfSAlexander V. Chernikov * Algo interaction: 5360468c5baSAlexander V. Chernikov * Function references @ti first to ensure table won't 5370468c5baSAlexander V. Chernikov * disappear or change its type. 5380468c5baSAlexander V. Chernikov * After that, prepare_add callback is called for each @tei entry. 5390468c5baSAlexander V. Chernikov * Next, we try to add each entry under UH+WHLOCK 5400468c5baSAlexander V. Chernikov * using add() callback. 5410468c5baSAlexander V. Chernikov * Finally, we free all state by calling flush_entry callback 5420468c5baSAlexander V. Chernikov * for each @tei. 5431bc0d457SAlexander V. Chernikov * 5441bc0d457SAlexander V. Chernikov * Returns 0 on success. 5451bc0d457SAlexander V. Chernikov */ 5461bc0d457SAlexander V. Chernikov int 5471bc0d457SAlexander V. Chernikov add_table_entry(struct ip_fw_chain *ch, struct tid_info *ti, 5481bc0d457SAlexander V. Chernikov struct tentry_info *tei, uint8_t flags, uint32_t count) 5491bc0d457SAlexander V. Chernikov { 5501bc0d457SAlexander V. Chernikov struct table_config *tc; 5511bc0d457SAlexander V. Chernikov struct table_algo *ta; 5521bc0d457SAlexander V. Chernikov uint16_t kidx; 5531bc0d457SAlexander V. Chernikov int error, first_error, i, rollback; 5541bc0d457SAlexander V. Chernikov uint32_t num, numadd; 5551bc0d457SAlexander V. Chernikov struct tentry_info *ptei; 5560cba2b28SAlexander V. Chernikov struct tableop_state ts; 5571bc0d457SAlexander V. Chernikov char ta_buf[TA_BUF_SZ]; 5581bc0d457SAlexander V. Chernikov caddr_t ta_buf_m, v; 5591bc0d457SAlexander V. Chernikov 5600cba2b28SAlexander V. Chernikov memset(&ts, 0, sizeof(ts)); 561d4e1b515SAlexander V. Chernikov ta = NULL; 5620cba2b28SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 5630cba2b28SAlexander V. Chernikov 5641bc0d457SAlexander V. Chernikov /* 5651bc0d457SAlexander V. Chernikov * Find and reference existing table. 5661bc0d457SAlexander V. Chernikov */ 5670cba2b28SAlexander V. Chernikov restart: 5680cba2b28SAlexander V. Chernikov if (ts.modified != 0) { 5698ebca97fSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 5700cba2b28SAlexander V. Chernikov flush_batch_buffer(ch, ta, tei, count, rollback, 5710cba2b28SAlexander V. Chernikov ta_buf_m, ta_buf); 5720cba2b28SAlexander V. Chernikov memset(&ts, 0, sizeof(ts)); 5738ebca97fSAlexander V. Chernikov ta = NULL; 5748ebca97fSAlexander V. Chernikov IPFW_UH_WLOCK(ch); 5750cba2b28SAlexander V. Chernikov } 5768ebca97fSAlexander V. Chernikov 577867708f7SAlexander V. Chernikov error = find_ref_table(ch, ti, tei, count, OP_ADD, &tc); 578867708f7SAlexander V. Chernikov if (error != 0) { 579867708f7SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 5801bc0d457SAlexander V. Chernikov return (error); 581867708f7SAlexander V. Chernikov } 582867708f7SAlexander V. Chernikov ta = tc->ta; 583fb4b37a3SAlexander V. Chernikov 584fb4b37a3SAlexander V. Chernikov /* Fill in tablestate */ 5850cba2b28SAlexander V. Chernikov ts.ch = ch; 58671af39bfSAlexander V. Chernikov ts.opstate.func = rollback_add_entry; 5870cba2b28SAlexander V. Chernikov ts.tc = tc; 5880cba2b28SAlexander V. Chernikov ts.vshared = tc->vshared; 5890cba2b28SAlexander V. Chernikov ts.vmask = tc->vmask; 5900cba2b28SAlexander V. Chernikov ts.ta = ta; 5910cba2b28SAlexander V. Chernikov ts.tei = tei; 5920cba2b28SAlexander V. Chernikov ts.count = count; 5930cba2b28SAlexander V. Chernikov rollback = 0; 5940cba2b28SAlexander V. Chernikov add_toperation_state(ch, &ts); 595867708f7SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 5961bc0d457SAlexander V. Chernikov 5971bc0d457SAlexander V. Chernikov /* Allocate memory and prepare record(s) */ 5981bc0d457SAlexander V. Chernikov /* Pass stack buffer by default */ 5991bc0d457SAlexander V. Chernikov ta_buf_m = ta_buf; 6004dff4ae0SAlexander V. Chernikov error = prepare_batch_buffer(ch, ta, tei, count, OP_ADD, &ta_buf_m); 6011bc0d457SAlexander V. Chernikov 602b074b7bbSAlexander V. Chernikov IPFW_UH_WLOCK(ch); 603b45fa3faSAlexander V. Chernikov del_toperation_state(ch, &ts); 604c8d5d308SAlexander V. Chernikov /* Drop reference we've used in first search */ 605c8d5d308SAlexander V. Chernikov tc->no.refcnt--; 606c8d5d308SAlexander V. Chernikov 607b45fa3faSAlexander V. Chernikov /* Check prepare_batch_buffer() error */ 608b45fa3faSAlexander V. Chernikov if (error != 0) 609b45fa3faSAlexander V. Chernikov goto cleanup; 610b45fa3faSAlexander V. Chernikov 611b6ee846eSAlexander V. Chernikov /* 6120cba2b28SAlexander V. Chernikov * Check if table swap has happened. 6130cba2b28SAlexander V. Chernikov * (so table algo might be changed). 6140cba2b28SAlexander V. Chernikov * Restart operation to achieve consistent behavior. 615b6ee846eSAlexander V. Chernikov */ 6160cba2b28SAlexander V. Chernikov if (ts.modified != 0) 6170cba2b28SAlexander V. Chernikov goto restart; 618b6ee846eSAlexander V. Chernikov 619c8d5d308SAlexander V. Chernikov /* 6200cba2b28SAlexander V. Chernikov * Link all values values to shared/per-table value array. 6210cba2b28SAlexander V. Chernikov * 6220cba2b28SAlexander V. Chernikov * May release/reacquire UH_WLOCK. 623c8d5d308SAlexander V. Chernikov */ 6240cba2b28SAlexander V. Chernikov error = ipfw_link_table_values(ch, &ts); 6250cba2b28SAlexander V. Chernikov if (error != 0) 626c8d5d308SAlexander V. Chernikov goto cleanup; 6270cba2b28SAlexander V. Chernikov if (ts.modified != 0) 6280cba2b28SAlexander V. Chernikov goto restart; 6290cba2b28SAlexander V. Chernikov 6300cba2b28SAlexander V. Chernikov /* 6310cba2b28SAlexander V. Chernikov * Ensure we are able to add all entries without additional 6320cba2b28SAlexander V. Chernikov * memory allocations. May release/reacquire UH_WLOCK. 6330cba2b28SAlexander V. Chernikov */ 6340cba2b28SAlexander V. Chernikov kidx = tc->no.kidx; 6350cba2b28SAlexander V. Chernikov error = check_table_space(ch, &ts, tc, KIDX_TO_TI(ch, kidx), count); 6360cba2b28SAlexander V. Chernikov if (error != 0) 6370cba2b28SAlexander V. Chernikov goto cleanup; 6380cba2b28SAlexander V. Chernikov if (ts.modified != 0) 6390cba2b28SAlexander V. Chernikov goto restart; 640c8d5d308SAlexander V. Chernikov 6413a845e10SAlexander V. Chernikov /* We've got valid table in @tc. Let's try to add data */ 6429f7d47b0SAlexander V. Chernikov kidx = tc->no.kidx; 6439f7d47b0SAlexander V. Chernikov ta = tc->ta; 6443a845e10SAlexander V. Chernikov numadd = 0; 6453a845e10SAlexander V. Chernikov first_error = 0; 6469f7d47b0SAlexander V. Chernikov 647b074b7bbSAlexander V. Chernikov IPFW_WLOCK(ch); 6483a845e10SAlexander V. Chernikov 6493a845e10SAlexander V. Chernikov v = ta_buf_m; 6501bc0d457SAlexander V. Chernikov for (i = 0; i < count; i++, v += ta->ta_buf_size) { 6513a845e10SAlexander V. Chernikov ptei = &tei[i]; 6523a845e10SAlexander V. Chernikov num = 0; 6533a845e10SAlexander V. Chernikov /* check limit before adding */ 6543a845e10SAlexander V. Chernikov if ((error = check_table_limit(tc, ptei)) == 0) { 6553a845e10SAlexander V. Chernikov error = ta->add(tc->astate, KIDX_TO_TI(ch, kidx), 6563a845e10SAlexander V. Chernikov ptei, v, &num); 6573a845e10SAlexander V. Chernikov /* Set status flag to inform userland */ 658867708f7SAlexander V. Chernikov store_tei_result(ptei, OP_ADD, error, num); 6593a845e10SAlexander V. Chernikov } 6603a845e10SAlexander V. Chernikov if (error == 0) { 6613a845e10SAlexander V. Chernikov /* Update number of records to ease limit checking */ 6623a845e10SAlexander V. Chernikov tc->count += num; 6633a845e10SAlexander V. Chernikov numadd += num; 6643a845e10SAlexander V. Chernikov continue; 6653a845e10SAlexander V. Chernikov } 6663a845e10SAlexander V. Chernikov 6673a845e10SAlexander V. Chernikov if (first_error == 0) 6683a845e10SAlexander V. Chernikov first_error = error; 6693a845e10SAlexander V. Chernikov 6703a845e10SAlexander V. Chernikov /* 6713a845e10SAlexander V. Chernikov * Some error have happened. Check our atomicity 6723a845e10SAlexander V. Chernikov * settings: continue if atomicity is not required, 6733a845e10SAlexander V. Chernikov * rollback changes otherwise. 6743a845e10SAlexander V. Chernikov */ 6753a845e10SAlexander V. Chernikov if ((flags & IPFW_CTF_ATOMIC) == 0) 6763a845e10SAlexander V. Chernikov continue; 6773a845e10SAlexander V. Chernikov 6781bc0d457SAlexander V. Chernikov rollback_added_entries(ch, tc, KIDX_TO_TI(ch, kidx), 6791bc0d457SAlexander V. Chernikov tei, ta_buf_m, count, i); 6800cba2b28SAlexander V. Chernikov 6810cba2b28SAlexander V. Chernikov rollback = 1; 6823a845e10SAlexander V. Chernikov break; 6833a845e10SAlexander V. Chernikov } 6843a845e10SAlexander V. Chernikov 6853b3a8eb9SGleb Smirnoff IPFW_WUNLOCK(ch); 6869f7d47b0SAlexander V. Chernikov 68771af39bfSAlexander V. Chernikov ipfw_garbage_table_values(ch, tc, tei, count, rollback); 6880cba2b28SAlexander V. Chernikov 689b6ee846eSAlexander V. Chernikov /* Permit post-add algorithm grow/rehash. */ 6903a845e10SAlexander V. Chernikov if (numadd != 0) 6910cba2b28SAlexander V. Chernikov check_table_space(ch, NULL, tc, KIDX_TO_TI(ch, kidx), 0); 692b074b7bbSAlexander V. Chernikov 6933a845e10SAlexander V. Chernikov /* Return first error to user, if any */ 6943a845e10SAlexander V. Chernikov error = first_error; 6953a845e10SAlexander V. Chernikov 6963a845e10SAlexander V. Chernikov cleanup: 6970cba2b28SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 6980cba2b28SAlexander V. Chernikov 699867708f7SAlexander V. Chernikov flush_batch_buffer(ch, ta, tei, count, rollback, ta_buf_m, ta_buf); 700b074b7bbSAlexander V. Chernikov 7019f7d47b0SAlexander V. Chernikov return (error); 7023b3a8eb9SGleb Smirnoff } 7033b3a8eb9SGleb Smirnoff 7043a845e10SAlexander V. Chernikov /* 7053a845e10SAlexander V. Chernikov * Deletes one or more entries in table @ti. 7063a845e10SAlexander V. Chernikov * 7073a845e10SAlexander V. Chernikov * Returns 0 on success. 7083a845e10SAlexander V. Chernikov */ 7093b3a8eb9SGleb Smirnoff int 7101832a7b3SAlexander V. Chernikov del_table_entry(struct ip_fw_chain *ch, struct tid_info *ti, 7113a845e10SAlexander V. Chernikov struct tentry_info *tei, uint8_t flags, uint32_t count) 7123b3a8eb9SGleb Smirnoff { 713b074b7bbSAlexander V. Chernikov struct table_config *tc; 7149f7d47b0SAlexander V. Chernikov struct table_algo *ta; 7153a845e10SAlexander V. Chernikov struct tentry_info *ptei; 716b074b7bbSAlexander V. Chernikov uint16_t kidx; 7173a845e10SAlexander V. Chernikov int error, first_error, i; 7183a845e10SAlexander V. Chernikov uint32_t num, numdel; 719b6ee846eSAlexander V. Chernikov char ta_buf[TA_BUF_SZ]; 7203a845e10SAlexander V. Chernikov caddr_t ta_buf_m, v; 7213b3a8eb9SGleb Smirnoff 722db785d31SAlexander V. Chernikov /* 7231bc0d457SAlexander V. Chernikov * Find and reference existing table. 724db785d31SAlexander V. Chernikov */ 725867708f7SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 726867708f7SAlexander V. Chernikov error = find_ref_table(ch, ti, tei, count, OP_DEL, &tc); 727867708f7SAlexander V. Chernikov if (error != 0) { 728867708f7SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 729db785d31SAlexander V. Chernikov return (error); 730867708f7SAlexander V. Chernikov } 731867708f7SAlexander V. Chernikov ta = tc->ta; 732867708f7SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 7333a845e10SAlexander V. Chernikov 73435e1bbd0SAlexander V. Chernikov /* Allocate memory and prepare record(s) */ 7351bc0d457SAlexander V. Chernikov /* Pass stack buffer by default */ 7363a845e10SAlexander V. Chernikov ta_buf_m = ta_buf; 7374dff4ae0SAlexander V. Chernikov error = prepare_batch_buffer(ch, ta, tei, count, OP_DEL, &ta_buf_m); 7383a845e10SAlexander V. Chernikov if (error != 0) 7393a845e10SAlexander V. Chernikov goto cleanup; 7409f7d47b0SAlexander V. Chernikov 7413a845e10SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 7423a845e10SAlexander V. Chernikov 7433a845e10SAlexander V. Chernikov /* Drop reference we've used in first search */ 7443a845e10SAlexander V. Chernikov tc->no.refcnt--; 7453a845e10SAlexander V. Chernikov 746c8d5d308SAlexander V. Chernikov /* 747c8d5d308SAlexander V. Chernikov * Check if table algo is still the same. 748c8d5d308SAlexander V. Chernikov * (changed ta may be the result of table swap). 749c8d5d308SAlexander V. Chernikov */ 750c8d5d308SAlexander V. Chernikov if (ta != tc->ta) { 751c8d5d308SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 752c8d5d308SAlexander V. Chernikov error = EINVAL; 753c8d5d308SAlexander V. Chernikov goto cleanup; 754c8d5d308SAlexander V. Chernikov } 755c8d5d308SAlexander V. Chernikov 756b074b7bbSAlexander V. Chernikov kidx = tc->no.kidx; 7573a845e10SAlexander V. Chernikov numdel = 0; 7583a845e10SAlexander V. Chernikov first_error = 0; 759b074b7bbSAlexander V. Chernikov 760b074b7bbSAlexander V. Chernikov IPFW_WLOCK(ch); 7613a845e10SAlexander V. Chernikov v = ta_buf_m; 7621bc0d457SAlexander V. Chernikov for (i = 0; i < count; i++, v += ta->ta_buf_size) { 7633a845e10SAlexander V. Chernikov ptei = &tei[i]; 7643a845e10SAlexander V. Chernikov num = 0; 7653a845e10SAlexander V. Chernikov error = ta->del(tc->astate, KIDX_TO_TI(ch, kidx), ptei, v, 7663a845e10SAlexander V. Chernikov &num); 7673a845e10SAlexander V. Chernikov /* Save state for userland */ 768867708f7SAlexander V. Chernikov store_tei_result(ptei, OP_DEL, error, num); 7693a845e10SAlexander V. Chernikov if (error != 0 && first_error == 0) 7703a845e10SAlexander V. Chernikov first_error = error; 7713a845e10SAlexander V. Chernikov tc->count -= num; 7723a845e10SAlexander V. Chernikov numdel += num; 7733a845e10SAlexander V. Chernikov } 7743b3a8eb9SGleb Smirnoff IPFW_WUNLOCK(ch); 7753b3a8eb9SGleb Smirnoff 7760cba2b28SAlexander V. Chernikov /* Unlink non-used values */ 77771af39bfSAlexander V. Chernikov ipfw_garbage_table_values(ch, tc, tei, count, 0); 7780cba2b28SAlexander V. Chernikov 7793a845e10SAlexander V. Chernikov if (numdel != 0) { 780b6ee846eSAlexander V. Chernikov /* Run post-del hook to permit shrinking */ 7810cba2b28SAlexander V. Chernikov check_table_space(ch, NULL, tc, KIDX_TO_TI(ch, kidx), 0); 782b6ee846eSAlexander V. Chernikov } 783b074b7bbSAlexander V. Chernikov 7849f7d47b0SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 7853b3a8eb9SGleb Smirnoff 7863a845e10SAlexander V. Chernikov /* Return first error to user, if any */ 7873a845e10SAlexander V. Chernikov error = first_error; 7883a845e10SAlexander V. Chernikov 7893a845e10SAlexander V. Chernikov cleanup: 790867708f7SAlexander V. Chernikov flush_batch_buffer(ch, ta, tei, count, 0, ta_buf_m, ta_buf); 791ac35ff17SAlexander V. Chernikov 792ac35ff17SAlexander V. Chernikov return (error); 793ac35ff17SAlexander V. Chernikov } 794ac35ff17SAlexander V. Chernikov 795db785d31SAlexander V. Chernikov /* 796b6ee846eSAlexander V. Chernikov * Ensure that table @tc has enough space to add @count entries without 797b6ee846eSAlexander V. Chernikov * need for reallocation. 798db785d31SAlexander V. Chernikov * 799db785d31SAlexander V. Chernikov * Callbacks order: 800301290bcSAlexander V. Chernikov * 0) need_modify() (UH_WLOCK) - checks if @count items can be added w/o resize. 801b6ee846eSAlexander V. Chernikov * 802db785d31SAlexander V. Chernikov * 1) alloc_modify (no locks, M_WAITOK) - alloc new state based on @pflags. 803db785d31SAlexander V. Chernikov * 2) prepare_modifyt (UH_WLOCK) - copy old data into new storage 804db785d31SAlexander V. Chernikov * 3) modify (UH_WLOCK + WLOCK) - switch pointers 805b6ee846eSAlexander V. Chernikov * 4) flush_modify (UH_WLOCK) - free state, if needed 806b6ee846eSAlexander V. Chernikov * 807b6ee846eSAlexander V. Chernikov * Returns 0 on success. 808db785d31SAlexander V. Chernikov */ 809db785d31SAlexander V. Chernikov static int 8100cba2b28SAlexander V. Chernikov check_table_space(struct ip_fw_chain *ch, struct tableop_state *ts, 8110cba2b28SAlexander V. Chernikov struct table_config *tc, struct table_info *ti, uint32_t count) 812db785d31SAlexander V. Chernikov { 813b6ee846eSAlexander V. Chernikov struct table_algo *ta; 814b6ee846eSAlexander V. Chernikov uint64_t pflags; 815b6ee846eSAlexander V. Chernikov char ta_buf[TA_BUF_SZ]; 816db785d31SAlexander V. Chernikov int error; 817db785d31SAlexander V. Chernikov 818b6ee846eSAlexander V. Chernikov IPFW_UH_WLOCK_ASSERT(ch); 819db785d31SAlexander V. Chernikov 820b6ee846eSAlexander V. Chernikov error = 0; 821b6ee846eSAlexander V. Chernikov ta = tc->ta; 822fd0869d5SAlexander V. Chernikov if (ta->need_modify == NULL) 823fd0869d5SAlexander V. Chernikov return (0); 824fd0869d5SAlexander V. Chernikov 825b6ee846eSAlexander V. Chernikov /* Acquire reference not to loose @tc between locks/unlocks */ 826b6ee846eSAlexander V. Chernikov tc->no.refcnt++; 827db785d31SAlexander V. Chernikov 828db785d31SAlexander V. Chernikov /* 829b6ee846eSAlexander V. Chernikov * TODO: think about avoiding race between large add/large delete 830b6ee846eSAlexander V. Chernikov * operation on algorithm which implements shrinking along with 831b6ee846eSAlexander V. Chernikov * growing. 832db785d31SAlexander V. Chernikov */ 833b6ee846eSAlexander V. Chernikov while (true) { 834b6ee846eSAlexander V. Chernikov pflags = 0; 835301290bcSAlexander V. Chernikov if (ta->need_modify(tc->astate, ti, count, &pflags) == 0) { 83635e1bbd0SAlexander V. Chernikov error = 0; 83735e1bbd0SAlexander V. Chernikov break; 838b6ee846eSAlexander V. Chernikov } 839db785d31SAlexander V. Chernikov 840b6ee846eSAlexander V. Chernikov /* We have to shrink/grow table */ 8410cba2b28SAlexander V. Chernikov if (ts != NULL) 8420cba2b28SAlexander V. Chernikov add_toperation_state(ch, ts); 843b6ee846eSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 844b6ee846eSAlexander V. Chernikov 845301290bcSAlexander V. Chernikov memset(&ta_buf, 0, sizeof(ta_buf)); 8460cba2b28SAlexander V. Chernikov error = ta->prepare_mod(ta_buf, &pflags); 847b6ee846eSAlexander V. Chernikov 848b6ee846eSAlexander V. Chernikov IPFW_UH_WLOCK(ch); 8490cba2b28SAlexander V. Chernikov if (ts != NULL) 8500cba2b28SAlexander V. Chernikov del_toperation_state(ch, ts); 8510cba2b28SAlexander V. Chernikov 8520cba2b28SAlexander V. Chernikov if (error != 0) 8530cba2b28SAlexander V. Chernikov break; 8540cba2b28SAlexander V. Chernikov 8550cba2b28SAlexander V. Chernikov if (ts != NULL && ts->modified != 0) { 8560cba2b28SAlexander V. Chernikov 8570cba2b28SAlexander V. Chernikov /* 8580cba2b28SAlexander V. Chernikov * Swap operation has happened 8590cba2b28SAlexander V. Chernikov * so we're currently operating on other 8600cba2b28SAlexander V. Chernikov * table data. Stop doing this. 8610cba2b28SAlexander V. Chernikov */ 8620cba2b28SAlexander V. Chernikov ta->flush_mod(ta_buf); 8630cba2b28SAlexander V. Chernikov break; 8640cba2b28SAlexander V. Chernikov } 865b6ee846eSAlexander V. Chernikov 866b6ee846eSAlexander V. Chernikov /* Check if we still need to alter table */ 867b6ee846eSAlexander V. Chernikov ti = KIDX_TO_TI(ch, tc->no.kidx); 868301290bcSAlexander V. Chernikov if (ta->need_modify(tc->astate, ti, count, &pflags) == 0) { 869301290bcSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 870b6ee846eSAlexander V. Chernikov 871b6ee846eSAlexander V. Chernikov /* 87235e1bbd0SAlexander V. Chernikov * Other thread has already performed resize. 87335e1bbd0SAlexander V. Chernikov * Flush our state and return. 874b6ee846eSAlexander V. Chernikov */ 875b6ee846eSAlexander V. Chernikov ta->flush_mod(ta_buf); 876b6ee846eSAlexander V. Chernikov break; 877b6ee846eSAlexander V. Chernikov } 878b6ee846eSAlexander V. Chernikov 879b6ee846eSAlexander V. Chernikov error = ta->fill_mod(tc->astate, ti, ta_buf, &pflags); 880b6ee846eSAlexander V. Chernikov if (error == 0) { 881db785d31SAlexander V. Chernikov /* Do actual modification */ 882db785d31SAlexander V. Chernikov IPFW_WLOCK(ch); 88368394ec8SAlexander V. Chernikov ta->modify(tc->astate, ti, ta_buf, pflags); 884db785d31SAlexander V. Chernikov IPFW_WUNLOCK(ch); 885db785d31SAlexander V. Chernikov } 886db785d31SAlexander V. Chernikov 887b6ee846eSAlexander V. Chernikov /* Anyway, flush data and retry */ 888db785d31SAlexander V. Chernikov ta->flush_mod(ta_buf); 889b6ee846eSAlexander V. Chernikov } 890db785d31SAlexander V. Chernikov 891b6ee846eSAlexander V. Chernikov tc->no.refcnt--; 892db785d31SAlexander V. Chernikov return (error); 893db785d31SAlexander V. Chernikov } 894db785d31SAlexander V. Chernikov 8953a845e10SAlexander V. Chernikov /* 896ac35ff17SAlexander V. Chernikov * Adds or deletes record in table. 897ac35ff17SAlexander V. Chernikov * Data layout (v0): 898ac35ff17SAlexander V. Chernikov * Request: [ ip_fw3_opheader ipfw_table_xentry ] 899ac35ff17SAlexander V. Chernikov * 900ac35ff17SAlexander V. Chernikov * Returns 0 on success 901ac35ff17SAlexander V. Chernikov */ 902ac35ff17SAlexander V. Chernikov static int 9036b988f3aSAlexander V. Chernikov manage_table_ent_v0(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 904ac35ff17SAlexander V. Chernikov struct sockopt_data *sd) 905ac35ff17SAlexander V. Chernikov { 906ac35ff17SAlexander V. Chernikov ipfw_table_xentry *xent; 907ac35ff17SAlexander V. Chernikov struct tentry_info tei; 908ac35ff17SAlexander V. Chernikov struct tid_info ti; 9090cba2b28SAlexander V. Chernikov struct table_value v; 910ac35ff17SAlexander V. Chernikov int error, hdrlen, read; 911ac35ff17SAlexander V. Chernikov 912ac35ff17SAlexander V. Chernikov hdrlen = offsetof(ipfw_table_xentry, k); 913ac35ff17SAlexander V. Chernikov 914ac35ff17SAlexander V. Chernikov /* Check minimum header size */ 915ac35ff17SAlexander V. Chernikov if (sd->valsize < (sizeof(*op3) + hdrlen)) 916ac35ff17SAlexander V. Chernikov return (EINVAL); 917ac35ff17SAlexander V. Chernikov 918ac35ff17SAlexander V. Chernikov read = sizeof(ip_fw3_opheader); 919ac35ff17SAlexander V. Chernikov 920ac35ff17SAlexander V. Chernikov /* Check if xentry len field is valid */ 921ac35ff17SAlexander V. Chernikov xent = (ipfw_table_xentry *)(op3 + 1); 922ac35ff17SAlexander V. Chernikov if (xent->len < hdrlen || xent->len + read > sd->valsize) 923ac35ff17SAlexander V. Chernikov return (EINVAL); 924ac35ff17SAlexander V. Chernikov 925ac35ff17SAlexander V. Chernikov memset(&tei, 0, sizeof(tei)); 926ac35ff17SAlexander V. Chernikov tei.paddr = &xent->k; 927ac35ff17SAlexander V. Chernikov tei.masklen = xent->masklen; 9280cba2b28SAlexander V. Chernikov ipfw_import_table_value_legacy(xent->value, &v); 9290cba2b28SAlexander V. Chernikov tei.pvalue = &v; 930a4641f4eSPedro F. Giffuni /* Old requests compatibility */ 931db785d31SAlexander V. Chernikov tei.flags = TEI_FLAGS_COMPAT; 932c21034b7SAlexander V. Chernikov if (xent->type == IPFW_TABLE_ADDR) { 933ac35ff17SAlexander V. Chernikov if (xent->len - hdrlen == sizeof(in_addr_t)) 934ac35ff17SAlexander V. Chernikov tei.subtype = AF_INET; 935ac35ff17SAlexander V. Chernikov else 936ac35ff17SAlexander V. Chernikov tei.subtype = AF_INET6; 937ac35ff17SAlexander V. Chernikov } 938ac35ff17SAlexander V. Chernikov 939ac35ff17SAlexander V. Chernikov memset(&ti, 0, sizeof(ti)); 940ac35ff17SAlexander V. Chernikov ti.uidx = xent->tbl; 941ac35ff17SAlexander V. Chernikov ti.type = xent->type; 942ac35ff17SAlexander V. Chernikov 943ac35ff17SAlexander V. Chernikov error = (op3->opcode == IP_FW_TABLE_XADD) ? 9443a845e10SAlexander V. Chernikov add_table_entry(ch, &ti, &tei, 0, 1) : 9453a845e10SAlexander V. Chernikov del_table_entry(ch, &ti, &tei, 0, 1); 946ac35ff17SAlexander V. Chernikov 947ac35ff17SAlexander V. Chernikov return (error); 948ac35ff17SAlexander V. Chernikov } 949ac35ff17SAlexander V. Chernikov 950ac35ff17SAlexander V. Chernikov /* 951ac35ff17SAlexander V. Chernikov * Adds or deletes record in table. 952ac35ff17SAlexander V. Chernikov * Data layout (v1)(current): 953db785d31SAlexander V. Chernikov * Request: [ ipfw_obj_header 954db785d31SAlexander V. Chernikov * ipfw_obj_ctlv(IPFW_TLV_TBLENT_LIST) [ ipfw_obj_tentry x N ] 955db785d31SAlexander V. Chernikov * ] 956ac35ff17SAlexander V. Chernikov * 957ac35ff17SAlexander V. Chernikov * Returns 0 on success 958ac35ff17SAlexander V. Chernikov */ 959ac35ff17SAlexander V. Chernikov static int 9606b988f3aSAlexander V. Chernikov manage_table_ent_v1(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 961ac35ff17SAlexander V. Chernikov struct sockopt_data *sd) 962ac35ff17SAlexander V. Chernikov { 9633a845e10SAlexander V. Chernikov ipfw_obj_tentry *tent, *ptent; 964db785d31SAlexander V. Chernikov ipfw_obj_ctlv *ctlv; 965ac35ff17SAlexander V. Chernikov ipfw_obj_header *oh; 9663a845e10SAlexander V. Chernikov struct tentry_info *ptei, tei, *tei_buf; 967ac35ff17SAlexander V. Chernikov struct tid_info ti; 9683a845e10SAlexander V. Chernikov int error, i, kidx, read; 969ac35ff17SAlexander V. Chernikov 970ac35ff17SAlexander V. Chernikov /* Check minimum header size */ 971db785d31SAlexander V. Chernikov if (sd->valsize < (sizeof(*oh) + sizeof(*ctlv))) 972ac35ff17SAlexander V. Chernikov return (EINVAL); 973ac35ff17SAlexander V. Chernikov 974ac35ff17SAlexander V. Chernikov /* Check if passed data is too long */ 975ac35ff17SAlexander V. Chernikov if (sd->valsize != sd->kavail) 976ac35ff17SAlexander V. Chernikov return (EINVAL); 977ac35ff17SAlexander V. Chernikov 978ac35ff17SAlexander V. Chernikov oh = (ipfw_obj_header *)sd->kbuf; 979ac35ff17SAlexander V. Chernikov 980ac35ff17SAlexander V. Chernikov /* Basic length checks for TLVs */ 981ac35ff17SAlexander V. Chernikov if (oh->ntlv.head.length != sizeof(oh->ntlv)) 982ac35ff17SAlexander V. Chernikov return (EINVAL); 983ac35ff17SAlexander V. Chernikov 984ac35ff17SAlexander V. Chernikov read = sizeof(*oh); 985ac35ff17SAlexander V. Chernikov 986db785d31SAlexander V. Chernikov ctlv = (ipfw_obj_ctlv *)(oh + 1); 987db785d31SAlexander V. Chernikov if (ctlv->head.length + read != sd->valsize) 988db785d31SAlexander V. Chernikov return (EINVAL); 989db785d31SAlexander V. Chernikov 990db785d31SAlexander V. Chernikov read += sizeof(*ctlv); 991db785d31SAlexander V. Chernikov tent = (ipfw_obj_tentry *)(ctlv + 1); 9923a845e10SAlexander V. Chernikov if (ctlv->count * sizeof(*tent) + read != sd->valsize) 993ac35ff17SAlexander V. Chernikov return (EINVAL); 994ac35ff17SAlexander V. Chernikov 9953a845e10SAlexander V. Chernikov if (ctlv->count == 0) 9963a845e10SAlexander V. Chernikov return (0); 997ac35ff17SAlexander V. Chernikov 9983a845e10SAlexander V. Chernikov /* 9993a845e10SAlexander V. Chernikov * Mark entire buffer as "read". 100035e1bbd0SAlexander V. Chernikov * This instructs sopt api write it back 10013a845e10SAlexander V. Chernikov * after function return. 10023a845e10SAlexander V. Chernikov */ 10033a845e10SAlexander V. Chernikov ipfw_get_sopt_header(sd, sd->valsize); 10043a845e10SAlexander V. Chernikov 10053a845e10SAlexander V. Chernikov /* Perform basic checks for each entry */ 10063a845e10SAlexander V. Chernikov ptent = tent; 10073a845e10SAlexander V. Chernikov kidx = tent->idx; 10083a845e10SAlexander V. Chernikov for (i = 0; i < ctlv->count; i++, ptent++) { 10093a845e10SAlexander V. Chernikov if (ptent->head.length != sizeof(*ptent)) 10103a845e10SAlexander V. Chernikov return (EINVAL); 10113a845e10SAlexander V. Chernikov if (ptent->idx != kidx) 10123a845e10SAlexander V. Chernikov return (ENOTSUP); 10133a845e10SAlexander V. Chernikov } 10143a845e10SAlexander V. Chernikov 10153a845e10SAlexander V. Chernikov /* Convert data into kernel request objects */ 101681d3153dSAlexander V. Chernikov objheader_to_ti(oh, &ti); 1017ac35ff17SAlexander V. Chernikov ti.type = oh->ntlv.type; 10183a845e10SAlexander V. Chernikov ti.uidx = kidx; 10193a845e10SAlexander V. Chernikov 10203a845e10SAlexander V. Chernikov /* Use on-stack buffer for single add/del */ 10213a845e10SAlexander V. Chernikov if (ctlv->count == 1) { 10223a845e10SAlexander V. Chernikov memset(&tei, 0, sizeof(tei)); 10233a845e10SAlexander V. Chernikov tei_buf = &tei; 10243a845e10SAlexander V. Chernikov } else 10253a845e10SAlexander V. Chernikov tei_buf = malloc(ctlv->count * sizeof(tei), M_TEMP, 10263a845e10SAlexander V. Chernikov M_WAITOK | M_ZERO); 10273a845e10SAlexander V. Chernikov 10283a845e10SAlexander V. Chernikov ptei = tei_buf; 10293a845e10SAlexander V. Chernikov ptent = tent; 10303a845e10SAlexander V. Chernikov for (i = 0; i < ctlv->count; i++, ptent++, ptei++) { 10313a845e10SAlexander V. Chernikov ptei->paddr = &ptent->k; 10323a845e10SAlexander V. Chernikov ptei->subtype = ptent->subtype; 10333a845e10SAlexander V. Chernikov ptei->masklen = ptent->masklen; 10343a845e10SAlexander V. Chernikov if (ptent->head.flags & IPFW_TF_UPDATE) 10353a845e10SAlexander V. Chernikov ptei->flags |= TEI_FLAGS_UPDATE; 10360cba2b28SAlexander V. Chernikov 10370cba2b28SAlexander V. Chernikov ipfw_import_table_value_v1(&ptent->v.value); 10380cba2b28SAlexander V. Chernikov ptei->pvalue = (struct table_value *)&ptent->v.value; 10393a845e10SAlexander V. Chernikov } 1040ac35ff17SAlexander V. Chernikov 1041ac35ff17SAlexander V. Chernikov error = (oh->opheader.opcode == IP_FW_TABLE_XADD) ? 10423a845e10SAlexander V. Chernikov add_table_entry(ch, &ti, tei_buf, ctlv->flags, ctlv->count) : 10433a845e10SAlexander V. Chernikov del_table_entry(ch, &ti, tei_buf, ctlv->flags, ctlv->count); 10443a845e10SAlexander V. Chernikov 10453a845e10SAlexander V. Chernikov /* Translate result back to userland */ 10463a845e10SAlexander V. Chernikov ptei = tei_buf; 10473a845e10SAlexander V. Chernikov ptent = tent; 10483a845e10SAlexander V. Chernikov for (i = 0; i < ctlv->count; i++, ptent++, ptei++) { 10493a845e10SAlexander V. Chernikov if (ptei->flags & TEI_FLAGS_ADDED) 10503a845e10SAlexander V. Chernikov ptent->result = IPFW_TR_ADDED; 10513a845e10SAlexander V. Chernikov else if (ptei->flags & TEI_FLAGS_DELETED) 10523a845e10SAlexander V. Chernikov ptent->result = IPFW_TR_DELETED; 10533a845e10SAlexander V. Chernikov else if (ptei->flags & TEI_FLAGS_UPDATED) 10543a845e10SAlexander V. Chernikov ptent->result = IPFW_TR_UPDATED; 10553a845e10SAlexander V. Chernikov else if (ptei->flags & TEI_FLAGS_LIMIT) 10563a845e10SAlexander V. Chernikov ptent->result = IPFW_TR_LIMIT; 10573a845e10SAlexander V. Chernikov else if (ptei->flags & TEI_FLAGS_ERROR) 10583a845e10SAlexander V. Chernikov ptent->result = IPFW_TR_ERROR; 10593a845e10SAlexander V. Chernikov else if (ptei->flags & TEI_FLAGS_NOTFOUND) 10603a845e10SAlexander V. Chernikov ptent->result = IPFW_TR_NOTFOUND; 10613a845e10SAlexander V. Chernikov else if (ptei->flags & TEI_FLAGS_EXISTS) 10623a845e10SAlexander V. Chernikov ptent->result = IPFW_TR_EXISTS; 10630cba2b28SAlexander V. Chernikov ipfw_export_table_value_v1(ptei->pvalue, &ptent->v.value); 10643a845e10SAlexander V. Chernikov } 10653a845e10SAlexander V. Chernikov 10663a845e10SAlexander V. Chernikov if (tei_buf != &tei) 10673a845e10SAlexander V. Chernikov free(tei_buf, M_TEMP); 1068ac35ff17SAlexander V. Chernikov 1069ac35ff17SAlexander V. Chernikov return (error); 1070ac35ff17SAlexander V. Chernikov } 1071ac35ff17SAlexander V. Chernikov 107281d3153dSAlexander V. Chernikov /* 107381d3153dSAlexander V. Chernikov * Looks up an entry in given table. 107481d3153dSAlexander V. Chernikov * Data layout (v0)(current): 107581d3153dSAlexander V. Chernikov * Request: [ ipfw_obj_header ipfw_obj_tentry ] 107681d3153dSAlexander V. Chernikov * Reply: [ ipfw_obj_header ipfw_obj_tentry ] 107781d3153dSAlexander V. Chernikov * 107881d3153dSAlexander V. Chernikov * Returns 0 on success 107981d3153dSAlexander V. Chernikov */ 10806b988f3aSAlexander V. Chernikov static int 10816b988f3aSAlexander V. Chernikov find_table_entry(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 108281d3153dSAlexander V. Chernikov struct sockopt_data *sd) 108381d3153dSAlexander V. Chernikov { 108481d3153dSAlexander V. Chernikov ipfw_obj_tentry *tent; 108581d3153dSAlexander V. Chernikov ipfw_obj_header *oh; 108681d3153dSAlexander V. Chernikov struct tid_info ti; 108781d3153dSAlexander V. Chernikov struct table_config *tc; 108881d3153dSAlexander V. Chernikov struct table_algo *ta; 108981d3153dSAlexander V. Chernikov struct table_info *kti; 109081d3153dSAlexander V. Chernikov struct namedobj_instance *ni; 1091914bffb6SAlexander V. Chernikov int error; 109281d3153dSAlexander V. Chernikov size_t sz; 109381d3153dSAlexander V. Chernikov 109481d3153dSAlexander V. Chernikov /* Check minimum header size */ 109581d3153dSAlexander V. Chernikov sz = sizeof(*oh) + sizeof(*tent); 109681d3153dSAlexander V. Chernikov if (sd->valsize != sz) 109781d3153dSAlexander V. Chernikov return (EINVAL); 109881d3153dSAlexander V. Chernikov 109981d3153dSAlexander V. Chernikov oh = (struct _ipfw_obj_header *)ipfw_get_sopt_header(sd, sz); 110081d3153dSAlexander V. Chernikov tent = (ipfw_obj_tentry *)(oh + 1); 110181d3153dSAlexander V. Chernikov 110281d3153dSAlexander V. Chernikov /* Basic length checks for TLVs */ 110381d3153dSAlexander V. Chernikov if (oh->ntlv.head.length != sizeof(oh->ntlv)) 110481d3153dSAlexander V. Chernikov return (EINVAL); 110581d3153dSAlexander V. Chernikov 110681d3153dSAlexander V. Chernikov objheader_to_ti(oh, &ti); 110781d3153dSAlexander V. Chernikov ti.type = oh->ntlv.type; 110881d3153dSAlexander V. Chernikov ti.uidx = tent->idx; 110981d3153dSAlexander V. Chernikov 111081d3153dSAlexander V. Chernikov IPFW_UH_RLOCK(ch); 111181d3153dSAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 111281d3153dSAlexander V. Chernikov 111381d3153dSAlexander V. Chernikov /* 111481d3153dSAlexander V. Chernikov * Find existing table and check its type . 111581d3153dSAlexander V. Chernikov */ 111681d3153dSAlexander V. Chernikov ta = NULL; 111781d3153dSAlexander V. Chernikov if ((tc = find_table(ni, &ti)) == NULL) { 111881d3153dSAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 111981d3153dSAlexander V. Chernikov return (ESRCH); 112081d3153dSAlexander V. Chernikov } 112181d3153dSAlexander V. Chernikov 112281d3153dSAlexander V. Chernikov /* check table type */ 112374b22066SAlexander V. Chernikov if (tc->no.subtype != ti.type) { 112481d3153dSAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 112581d3153dSAlexander V. Chernikov return (EINVAL); 112681d3153dSAlexander V. Chernikov } 112781d3153dSAlexander V. Chernikov 112881d3153dSAlexander V. Chernikov kti = KIDX_TO_TI(ch, tc->no.kidx); 112981d3153dSAlexander V. Chernikov ta = tc->ta; 113081d3153dSAlexander V. Chernikov 1131914bffb6SAlexander V. Chernikov if (ta->find_tentry == NULL) 1132914bffb6SAlexander V. Chernikov return (ENOTSUP); 1133914bffb6SAlexander V. Chernikov 1134914bffb6SAlexander V. Chernikov error = ta->find_tentry(tc->astate, kti, tent); 113581d3153dSAlexander V. Chernikov 113681d3153dSAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 113781d3153dSAlexander V. Chernikov 113881d3153dSAlexander V. Chernikov return (error); 113981d3153dSAlexander V. Chernikov } 114081d3153dSAlexander V. Chernikov 114146d52008SAlexander V. Chernikov /* 114246d52008SAlexander V. Chernikov * Flushes all entries or destroys given table. 114346d52008SAlexander V. Chernikov * Data layout (v0)(current): 114446d52008SAlexander V. Chernikov * Request: [ ipfw_obj_header ] 114546d52008SAlexander V. Chernikov * 114646d52008SAlexander V. Chernikov * Returns 0 on success 114746d52008SAlexander V. Chernikov */ 11486b988f3aSAlexander V. Chernikov static int 11496b988f3aSAlexander V. Chernikov flush_table_v0(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 1150ac35ff17SAlexander V. Chernikov struct sockopt_data *sd) 1151ac35ff17SAlexander V. Chernikov { 1152ac35ff17SAlexander V. Chernikov int error; 1153ac35ff17SAlexander V. Chernikov struct _ipfw_obj_header *oh; 1154ac35ff17SAlexander V. Chernikov struct tid_info ti; 1155ac35ff17SAlexander V. Chernikov 1156ac35ff17SAlexander V. Chernikov if (sd->valsize != sizeof(*oh)) 1157ac35ff17SAlexander V. Chernikov return (EINVAL); 1158ac35ff17SAlexander V. Chernikov 1159ac35ff17SAlexander V. Chernikov oh = (struct _ipfw_obj_header *)op3; 1160ac35ff17SAlexander V. Chernikov objheader_to_ti(oh, &ti); 1161ac35ff17SAlexander V. Chernikov 11621832a7b3SAlexander V. Chernikov if (op3->opcode == IP_FW_TABLE_XDESTROY) 1163ac35ff17SAlexander V. Chernikov error = destroy_table(ch, &ti); 11641832a7b3SAlexander V. Chernikov else if (op3->opcode == IP_FW_TABLE_XFLUSH) 1165ac35ff17SAlexander V. Chernikov error = flush_table(ch, &ti); 1166ac35ff17SAlexander V. Chernikov else 1167ac35ff17SAlexander V. Chernikov return (ENOTSUP); 1168ac35ff17SAlexander V. Chernikov 1169ac35ff17SAlexander V. Chernikov return (error); 11703b3a8eb9SGleb Smirnoff } 11713b3a8eb9SGleb Smirnoff 1172fb4b37a3SAlexander V. Chernikov static void 1173fb4b37a3SAlexander V. Chernikov restart_flush(void *object, struct op_state *_state) 1174fb4b37a3SAlexander V. Chernikov { 1175fb4b37a3SAlexander V. Chernikov struct tableop_state *ts; 1176fb4b37a3SAlexander V. Chernikov 1177fb4b37a3SAlexander V. Chernikov ts = (struct tableop_state *)_state; 1178fb4b37a3SAlexander V. Chernikov 1179fb4b37a3SAlexander V. Chernikov if (ts->tc != object) 1180fb4b37a3SAlexander V. Chernikov return; 1181fb4b37a3SAlexander V. Chernikov 1182fb4b37a3SAlexander V. Chernikov /* Indicate we've called */ 1183fb4b37a3SAlexander V. Chernikov ts->modified = 1; 1184fb4b37a3SAlexander V. Chernikov } 1185fb4b37a3SAlexander V. Chernikov 118635e1bbd0SAlexander V. Chernikov /* 118735e1bbd0SAlexander V. Chernikov * Flushes given table. 118835e1bbd0SAlexander V. Chernikov * 118935e1bbd0SAlexander V. Chernikov * Function create new table instance with the same 119035e1bbd0SAlexander V. Chernikov * parameters, swaps it with old one and 1191fb4b37a3SAlexander V. Chernikov * flushes state without holding runtime WLOCK. 119235e1bbd0SAlexander V. Chernikov * 119335e1bbd0SAlexander V. Chernikov * Returns 0 on success. 119435e1bbd0SAlexander V. Chernikov */ 11951832a7b3SAlexander V. Chernikov int 1196ac35ff17SAlexander V. Chernikov flush_table(struct ip_fw_chain *ch, struct tid_info *ti) 11973b3a8eb9SGleb Smirnoff { 1198b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 1199b074b7bbSAlexander V. Chernikov struct table_config *tc; 12009f7d47b0SAlexander V. Chernikov struct table_algo *ta; 12019f7d47b0SAlexander V. Chernikov struct table_info ti_old, ti_new, *tablestate; 12029f7d47b0SAlexander V. Chernikov void *astate_old, *astate_new; 1203914bffb6SAlexander V. Chernikov char algostate[64], *pstate; 1204fb4b37a3SAlexander V. Chernikov struct tableop_state ts; 12050caab009SAlexander V. Chernikov int error, need_gc; 1206b074b7bbSAlexander V. Chernikov uint16_t kidx; 1207914bffb6SAlexander V. Chernikov uint8_t tflags; 12083b3a8eb9SGleb Smirnoff 12093b3a8eb9SGleb Smirnoff /* 1210a4641f4eSPedro F. Giffuni * Stage 1: save table algorithm. 1211b074b7bbSAlexander V. Chernikov * Reference found table to ensure it won't disappear. 12123b3a8eb9SGleb Smirnoff */ 1213b074b7bbSAlexander V. Chernikov IPFW_UH_WLOCK(ch); 1214b074b7bbSAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 1215b074b7bbSAlexander V. Chernikov if ((tc = find_table(ni, ti)) == NULL) { 1216b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1217b074b7bbSAlexander V. Chernikov return (ESRCH); 1218b074b7bbSAlexander V. Chernikov } 12190caab009SAlexander V. Chernikov need_gc = 0; 12200caab009SAlexander V. Chernikov astate_new = NULL; 12210caab009SAlexander V. Chernikov memset(&ti_new, 0, sizeof(ti_new)); 1222fb4b37a3SAlexander V. Chernikov restart: 1223fb4b37a3SAlexander V. Chernikov /* Set up swap handler */ 1224fb4b37a3SAlexander V. Chernikov memset(&ts, 0, sizeof(ts)); 1225fb4b37a3SAlexander V. Chernikov ts.opstate.func = restart_flush; 1226fb4b37a3SAlexander V. Chernikov ts.tc = tc; 1227fb4b37a3SAlexander V. Chernikov 12289f7d47b0SAlexander V. Chernikov ta = tc->ta; 1229fd0869d5SAlexander V. Chernikov /* Do not flush readonly tables */ 1230fd0869d5SAlexander V. Chernikov if ((ta->flags & TA_FLAG_READONLY) != 0) { 1231fd0869d5SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1232fd0869d5SAlexander V. Chernikov return (EACCES); 1233fd0869d5SAlexander V. Chernikov } 123435e1bbd0SAlexander V. Chernikov /* Save startup algo parameters */ 1235daabb523SAlexander V. Chernikov if (ta->print_config != NULL) { 1236daabb523SAlexander V. Chernikov ta->print_config(tc->astate, KIDX_TO_TI(ch, tc->no.kidx), 1237daabb523SAlexander V. Chernikov algostate, sizeof(algostate)); 1238daabb523SAlexander V. Chernikov pstate = algostate; 1239daabb523SAlexander V. Chernikov } else 1240daabb523SAlexander V. Chernikov pstate = NULL; 1241914bffb6SAlexander V. Chernikov tflags = tc->tflags; 1242fb4b37a3SAlexander V. Chernikov tc->no.refcnt++; 1243fb4b37a3SAlexander V. Chernikov add_toperation_state(ch, &ts); 1244b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 12453b3a8eb9SGleb Smirnoff 1246b074b7bbSAlexander V. Chernikov /* 12470caab009SAlexander V. Chernikov * Stage 1.5: if this is not the first attempt, destroy previous state 12480caab009SAlexander V. Chernikov */ 12490caab009SAlexander V. Chernikov if (need_gc != 0) { 12500caab009SAlexander V. Chernikov ta->destroy(astate_new, &ti_new); 12510caab009SAlexander V. Chernikov need_gc = 0; 12520caab009SAlexander V. Chernikov } 12530caab009SAlexander V. Chernikov 12540caab009SAlexander V. Chernikov /* 12559f7d47b0SAlexander V. Chernikov * Stage 2: allocate new table instance using same algo. 1256b074b7bbSAlexander V. Chernikov */ 12579f7d47b0SAlexander V. Chernikov memset(&ti_new, 0, sizeof(struct table_info)); 1258fb4b37a3SAlexander V. Chernikov error = ta->init(ch, &astate_new, &ti_new, pstate, tflags); 1259b074b7bbSAlexander V. Chernikov 1260b074b7bbSAlexander V. Chernikov /* 1261b074b7bbSAlexander V. Chernikov * Stage 3: swap old state pointers with newly-allocated ones. 1262b074b7bbSAlexander V. Chernikov * Decrease refcount. 1263b074b7bbSAlexander V. Chernikov */ 1264b074b7bbSAlexander V. Chernikov IPFW_UH_WLOCK(ch); 1265fb4b37a3SAlexander V. Chernikov tc->no.refcnt--; 1266fb4b37a3SAlexander V. Chernikov del_toperation_state(ch, &ts); 1267fb4b37a3SAlexander V. Chernikov 1268fb4b37a3SAlexander V. Chernikov if (error != 0) { 1269fb4b37a3SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1270fb4b37a3SAlexander V. Chernikov return (error); 1271fb4b37a3SAlexander V. Chernikov } 1272fb4b37a3SAlexander V. Chernikov 1273fb4b37a3SAlexander V. Chernikov /* 1274fb4b37a3SAlexander V. Chernikov * Restart operation if table swap has happened: 1275fb4b37a3SAlexander V. Chernikov * even if algo may be the same, algo init parameters 1276fb4b37a3SAlexander V. Chernikov * may change. Restart operation instead of doing 1277fb4b37a3SAlexander V. Chernikov * complex checks. 1278fb4b37a3SAlexander V. Chernikov */ 1279fb4b37a3SAlexander V. Chernikov if (ts.modified != 0) { 12800caab009SAlexander V. Chernikov /* Delay destroying data since we're holding UH lock */ 12810caab009SAlexander V. Chernikov need_gc = 1; 1282fb4b37a3SAlexander V. Chernikov goto restart; 1283fb4b37a3SAlexander V. Chernikov } 1284b074b7bbSAlexander V. Chernikov 1285b074b7bbSAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 1286b074b7bbSAlexander V. Chernikov kidx = tc->no.kidx; 12879f7d47b0SAlexander V. Chernikov tablestate = (struct table_info *)ch->tablestate; 1288b074b7bbSAlexander V. Chernikov 12899f7d47b0SAlexander V. Chernikov IPFW_WLOCK(ch); 12909f7d47b0SAlexander V. Chernikov ti_old = tablestate[kidx]; 12919f7d47b0SAlexander V. Chernikov tablestate[kidx] = ti_new; 12929f7d47b0SAlexander V. Chernikov IPFW_WUNLOCK(ch); 1293b074b7bbSAlexander V. Chernikov 12949f7d47b0SAlexander V. Chernikov astate_old = tc->astate; 12959f7d47b0SAlexander V. Chernikov tc->astate = astate_new; 12964c060d85SAlexander V. Chernikov tc->ti_copy = ti_new; 12979f7d47b0SAlexander V. Chernikov tc->count = 0; 1298b074b7bbSAlexander V. Chernikov 129979e86902SAlexander V. Chernikov /* Notify algo on real @ti address */ 130079e86902SAlexander V. Chernikov if (ta->change_ti != NULL) 130179e86902SAlexander V. Chernikov ta->change_ti(tc->astate, &tablestate[kidx]); 130279e86902SAlexander V. Chernikov 13030cba2b28SAlexander V. Chernikov /* 13040cba2b28SAlexander V. Chernikov * Stage 4: unref values. 13050cba2b28SAlexander V. Chernikov */ 13060cba2b28SAlexander V. Chernikov ipfw_unref_table_values(ch, tc, ta, astate_old, &ti_old); 1307b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 13083b3a8eb9SGleb Smirnoff 1309b074b7bbSAlexander V. Chernikov /* 13100cba2b28SAlexander V. Chernikov * Stage 5: perform real flush/destroy. 1311b074b7bbSAlexander V. Chernikov */ 13129f7d47b0SAlexander V. Chernikov ta->destroy(astate_old, &ti_old); 13133b3a8eb9SGleb Smirnoff 13143b3a8eb9SGleb Smirnoff return (0); 13153b3a8eb9SGleb Smirnoff } 13163b3a8eb9SGleb Smirnoff 1317b074b7bbSAlexander V. Chernikov /* 131846d52008SAlexander V. Chernikov * Swaps two tables. 131946d52008SAlexander V. Chernikov * Data layout (v0)(current): 132046d52008SAlexander V. Chernikov * Request: [ ipfw_obj_header ipfw_obj_ntlv ] 132146d52008SAlexander V. Chernikov * 132246d52008SAlexander V. Chernikov * Returns 0 on success 132346d52008SAlexander V. Chernikov */ 13246b988f3aSAlexander V. Chernikov static int 13256b988f3aSAlexander V. Chernikov swap_table(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 132646d52008SAlexander V. Chernikov struct sockopt_data *sd) 132746d52008SAlexander V. Chernikov { 132846d52008SAlexander V. Chernikov int error; 132946d52008SAlexander V. Chernikov struct _ipfw_obj_header *oh; 133046d52008SAlexander V. Chernikov struct tid_info ti_a, ti_b; 133146d52008SAlexander V. Chernikov 133246d52008SAlexander V. Chernikov if (sd->valsize != sizeof(*oh) + sizeof(ipfw_obj_ntlv)) 133346d52008SAlexander V. Chernikov return (EINVAL); 133446d52008SAlexander V. Chernikov 133546d52008SAlexander V. Chernikov oh = (struct _ipfw_obj_header *)op3; 133646d52008SAlexander V. Chernikov ntlv_to_ti(&oh->ntlv, &ti_a); 133746d52008SAlexander V. Chernikov ntlv_to_ti((ipfw_obj_ntlv *)(oh + 1), &ti_b); 133846d52008SAlexander V. Chernikov 1339a73d728dSAlexander V. Chernikov error = swap_tables(ch, &ti_a, &ti_b); 134046d52008SAlexander V. Chernikov 134146d52008SAlexander V. Chernikov return (error); 134246d52008SAlexander V. Chernikov } 134346d52008SAlexander V. Chernikov 134435e1bbd0SAlexander V. Chernikov /* 134535e1bbd0SAlexander V. Chernikov * Swaps two tables of the same type/valtype. 134635e1bbd0SAlexander V. Chernikov * 134735e1bbd0SAlexander V. Chernikov * Checks if tables are compatible and limits 1348c8d5d308SAlexander V. Chernikov * permits swap, than actually perform swap. 134935e1bbd0SAlexander V. Chernikov * 1350c8d5d308SAlexander V. Chernikov * Each table consists of 2 different parts: 1351c8d5d308SAlexander V. Chernikov * config: 1352c8d5d308SAlexander V. Chernikov * @tc (with name, set, kidx) and rule bindings, which is "stable". 1353c8d5d308SAlexander V. Chernikov * number of items 1354c8d5d308SAlexander V. Chernikov * table algo 1355c8d5d308SAlexander V. Chernikov * runtime: 1356c8d5d308SAlexander V. Chernikov * runtime data @ti (ch->tablestate) 1357c8d5d308SAlexander V. Chernikov * runtime cache in @tc 1358c8d5d308SAlexander V. Chernikov * algo-specific data (@tc->astate) 1359c8d5d308SAlexander V. Chernikov * 1360c8d5d308SAlexander V. Chernikov * So we switch: 1361c8d5d308SAlexander V. Chernikov * all runtime data 1362c8d5d308SAlexander V. Chernikov * number of items 1363c8d5d308SAlexander V. Chernikov * table algo 1364c8d5d308SAlexander V. Chernikov * 1365c8d5d308SAlexander V. Chernikov * After that we call @ti change handler for each table. 1366c8d5d308SAlexander V. Chernikov * 1367c8d5d308SAlexander V. Chernikov * Note that referencing @tc won't protect tc->ta from change. 1368c8d5d308SAlexander V. Chernikov * XXX: Do we need to restrict swap between locked tables? 1369c8d5d308SAlexander V. Chernikov * XXX: Do we need to exchange ftype? 137035e1bbd0SAlexander V. Chernikov * 137135e1bbd0SAlexander V. Chernikov * Returns 0 on success. 137235e1bbd0SAlexander V. Chernikov */ 137346d52008SAlexander V. Chernikov static int 1374a73d728dSAlexander V. Chernikov swap_tables(struct ip_fw_chain *ch, struct tid_info *a, 137546d52008SAlexander V. Chernikov struct tid_info *b) 137646d52008SAlexander V. Chernikov { 137746d52008SAlexander V. Chernikov struct namedobj_instance *ni; 137846d52008SAlexander V. Chernikov struct table_config *tc_a, *tc_b; 137946d52008SAlexander V. Chernikov struct table_algo *ta; 138046d52008SAlexander V. Chernikov struct table_info ti, *tablestate; 138146d52008SAlexander V. Chernikov void *astate; 138246d52008SAlexander V. Chernikov uint32_t count; 138346d52008SAlexander V. Chernikov 138446d52008SAlexander V. Chernikov /* 138546d52008SAlexander V. Chernikov * Stage 1: find both tables and ensure they are of 138635e1bbd0SAlexander V. Chernikov * the same type. 138746d52008SAlexander V. Chernikov */ 138846d52008SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 138946d52008SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 139046d52008SAlexander V. Chernikov if ((tc_a = find_table(ni, a)) == NULL) { 139146d52008SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 139246d52008SAlexander V. Chernikov return (ESRCH); 139346d52008SAlexander V. Chernikov } 139446d52008SAlexander V. Chernikov if ((tc_b = find_table(ni, b)) == NULL) { 139546d52008SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 139646d52008SAlexander V. Chernikov return (ESRCH); 139746d52008SAlexander V. Chernikov } 139846d52008SAlexander V. Chernikov 139946d52008SAlexander V. Chernikov /* It is very easy to swap between the same table */ 140046d52008SAlexander V. Chernikov if (tc_a == tc_b) { 140146d52008SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 140246d52008SAlexander V. Chernikov return (0); 140346d52008SAlexander V. Chernikov } 140446d52008SAlexander V. Chernikov 140546d52008SAlexander V. Chernikov /* Check type and value are the same */ 140674b22066SAlexander V. Chernikov if (tc_a->no.subtype!=tc_b->no.subtype || tc_a->tflags!=tc_b->tflags) { 140746d52008SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 140846d52008SAlexander V. Chernikov return (EINVAL); 140946d52008SAlexander V. Chernikov } 141046d52008SAlexander V. Chernikov 141146d52008SAlexander V. Chernikov /* Check limits before swap */ 141246d52008SAlexander V. Chernikov if ((tc_a->limit != 0 && tc_b->count > tc_a->limit) || 141346d52008SAlexander V. Chernikov (tc_b->limit != 0 && tc_a->count > tc_b->limit)) { 141446d52008SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 141546d52008SAlexander V. Chernikov return (EFBIG); 141646d52008SAlexander V. Chernikov } 141746d52008SAlexander V. Chernikov 1418fd0869d5SAlexander V. Chernikov /* Check if one of the tables is readonly */ 1419fd0869d5SAlexander V. Chernikov if (((tc_a->ta->flags | tc_b->ta->flags) & TA_FLAG_READONLY) != 0) { 1420fd0869d5SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1421fd0869d5SAlexander V. Chernikov return (EACCES); 1422fd0869d5SAlexander V. Chernikov } 1423fd0869d5SAlexander V. Chernikov 14240cba2b28SAlexander V. Chernikov /* Notify we're going to swap */ 14250cba2b28SAlexander V. Chernikov rollback_toperation_state(ch, tc_a); 14260cba2b28SAlexander V. Chernikov rollback_toperation_state(ch, tc_b); 14270cba2b28SAlexander V. Chernikov 142846d52008SAlexander V. Chernikov /* Everything is fine, prepare to swap */ 142946d52008SAlexander V. Chernikov tablestate = (struct table_info *)ch->tablestate; 143046d52008SAlexander V. Chernikov ti = tablestate[tc_a->no.kidx]; 143146d52008SAlexander V. Chernikov ta = tc_a->ta; 143246d52008SAlexander V. Chernikov astate = tc_a->astate; 143346d52008SAlexander V. Chernikov count = tc_a->count; 143446d52008SAlexander V. Chernikov 143546d52008SAlexander V. Chernikov IPFW_WLOCK(ch); 143646d52008SAlexander V. Chernikov /* a <- b */ 143746d52008SAlexander V. Chernikov tablestate[tc_a->no.kidx] = tablestate[tc_b->no.kidx]; 143846d52008SAlexander V. Chernikov tc_a->ta = tc_b->ta; 143946d52008SAlexander V. Chernikov tc_a->astate = tc_b->astate; 144046d52008SAlexander V. Chernikov tc_a->count = tc_b->count; 144146d52008SAlexander V. Chernikov /* b <- a */ 144246d52008SAlexander V. Chernikov tablestate[tc_b->no.kidx] = ti; 144346d52008SAlexander V. Chernikov tc_b->ta = ta; 144446d52008SAlexander V. Chernikov tc_b->astate = astate; 144546d52008SAlexander V. Chernikov tc_b->count = count; 144646d52008SAlexander V. Chernikov IPFW_WUNLOCK(ch); 144746d52008SAlexander V. Chernikov 144846d52008SAlexander V. Chernikov /* Ensure tc.ti copies are in sync */ 14494c060d85SAlexander V. Chernikov tc_a->ti_copy = tablestate[tc_a->no.kidx]; 14504c060d85SAlexander V. Chernikov tc_b->ti_copy = tablestate[tc_b->no.kidx]; 145146d52008SAlexander V. Chernikov 145246d52008SAlexander V. Chernikov /* Notify both tables on @ti change */ 145346d52008SAlexander V. Chernikov if (tc_a->ta->change_ti != NULL) 145446d52008SAlexander V. Chernikov tc_a->ta->change_ti(tc_a->astate, &tablestate[tc_a->no.kidx]); 145546d52008SAlexander V. Chernikov if (tc_b->ta->change_ti != NULL) 145646d52008SAlexander V. Chernikov tc_b->ta->change_ti(tc_b->astate, &tablestate[tc_b->no.kidx]); 145746d52008SAlexander V. Chernikov 145846d52008SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 145946d52008SAlexander V. Chernikov 146046d52008SAlexander V. Chernikov return (0); 146146d52008SAlexander V. Chernikov } 146246d52008SAlexander V. Chernikov 146346d52008SAlexander V. Chernikov /* 14649f7d47b0SAlexander V. Chernikov * Destroys table specified by @ti. 1465ac35ff17SAlexander V. Chernikov * Data layout (v0)(current): 1466ac35ff17SAlexander V. Chernikov * Request: [ ip_fw3_opheader ] 1467ac35ff17SAlexander V. Chernikov * 1468ac35ff17SAlexander V. Chernikov * Returns 0 on success 1469b074b7bbSAlexander V. Chernikov */ 1470ac35ff17SAlexander V. Chernikov static int 1471ac35ff17SAlexander V. Chernikov destroy_table(struct ip_fw_chain *ch, struct tid_info *ti) 1472b074b7bbSAlexander V. Chernikov { 1473b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 1474b074b7bbSAlexander V. Chernikov struct table_config *tc; 1475b074b7bbSAlexander V. Chernikov 1476b074b7bbSAlexander V. Chernikov IPFW_UH_WLOCK(ch); 1477b074b7bbSAlexander V. Chernikov 1478b074b7bbSAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 1479b074b7bbSAlexander V. Chernikov if ((tc = find_table(ni, ti)) == NULL) { 1480b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1481b074b7bbSAlexander V. Chernikov return (ESRCH); 1482b074b7bbSAlexander V. Chernikov } 1483b074b7bbSAlexander V. Chernikov 14849f7d47b0SAlexander V. Chernikov /* Do not permit destroying referenced tables */ 14859f7d47b0SAlexander V. Chernikov if (tc->no.refcnt > 0) { 1486b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1487b074b7bbSAlexander V. Chernikov return (EBUSY); 1488b074b7bbSAlexander V. Chernikov } 1489b074b7bbSAlexander V. Chernikov 1490b074b7bbSAlexander V. Chernikov IPFW_WLOCK(ch); 1491b074b7bbSAlexander V. Chernikov unlink_table(ch, tc); 1492b074b7bbSAlexander V. Chernikov IPFW_WUNLOCK(ch); 1493b074b7bbSAlexander V. Chernikov 1494b074b7bbSAlexander V. Chernikov /* Free obj index */ 1495ac35ff17SAlexander V. Chernikov if (ipfw_objhash_free_idx(ni, tc->no.kidx) != 0) 1496b074b7bbSAlexander V. Chernikov printf("Error unlinking kidx %d from table %s\n", 1497b074b7bbSAlexander V. Chernikov tc->no.kidx, tc->tablename); 1498b074b7bbSAlexander V. Chernikov 14990cba2b28SAlexander V. Chernikov /* Unref values used in tables while holding UH lock */ 15004c060d85SAlexander V. Chernikov ipfw_unref_table_values(ch, tc, tc->ta, tc->astate, &tc->ti_copy); 1501b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1502b074b7bbSAlexander V. Chernikov 1503b074b7bbSAlexander V. Chernikov free_table_config(ni, tc); 1504b074b7bbSAlexander V. Chernikov 1505b074b7bbSAlexander V. Chernikov return (0); 1506b074b7bbSAlexander V. Chernikov } 1507b074b7bbSAlexander V. Chernikov 15084040f4ecSAlexander V. Chernikov static uint32_t 15094040f4ecSAlexander V. Chernikov roundup2p(uint32_t v) 15104040f4ecSAlexander V. Chernikov { 15114040f4ecSAlexander V. Chernikov 15124040f4ecSAlexander V. Chernikov v--; 15134040f4ecSAlexander V. Chernikov v |= v >> 1; 15144040f4ecSAlexander V. Chernikov v |= v >> 2; 15154040f4ecSAlexander V. Chernikov v |= v >> 4; 15164040f4ecSAlexander V. Chernikov v |= v >> 8; 15174040f4ecSAlexander V. Chernikov v |= v >> 16; 15184040f4ecSAlexander V. Chernikov v++; 15194040f4ecSAlexander V. Chernikov 15204040f4ecSAlexander V. Chernikov return (v); 15214040f4ecSAlexander V. Chernikov } 15224040f4ecSAlexander V. Chernikov 152335e1bbd0SAlexander V. Chernikov /* 152435e1bbd0SAlexander V. Chernikov * Grow tables index. 152535e1bbd0SAlexander V. Chernikov * 152635e1bbd0SAlexander V. Chernikov * Returns 0 on success. 152735e1bbd0SAlexander V. Chernikov */ 15283b3a8eb9SGleb Smirnoff int 15293b3a8eb9SGleb Smirnoff ipfw_resize_tables(struct ip_fw_chain *ch, unsigned int ntables) 15303b3a8eb9SGleb Smirnoff { 15313b3a8eb9SGleb Smirnoff unsigned int ntables_old, tbl; 1532b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 15339f7d47b0SAlexander V. Chernikov void *new_idx, *old_tablestate, *tablestate; 153468394ec8SAlexander V. Chernikov struct table_info *ti; 153568394ec8SAlexander V. Chernikov struct table_config *tc; 153668394ec8SAlexander V. Chernikov int i, new_blocks; 15373b3a8eb9SGleb Smirnoff 15383b3a8eb9SGleb Smirnoff /* Check new value for validity */ 15394040f4ecSAlexander V. Chernikov if (ntables == 0) 15404040f4ecSAlexander V. Chernikov return (EINVAL); 15413b3a8eb9SGleb Smirnoff if (ntables > IPFW_TABLES_MAX) 15423b3a8eb9SGleb Smirnoff ntables = IPFW_TABLES_MAX; 15434040f4ecSAlexander V. Chernikov /* Alight to nearest power of 2 */ 15444040f4ecSAlexander V. Chernikov ntables = (unsigned int)roundup2p(ntables); 15453b3a8eb9SGleb Smirnoff 15463b3a8eb9SGleb Smirnoff /* Allocate new pointers */ 15479f7d47b0SAlexander V. Chernikov tablestate = malloc(ntables * sizeof(struct table_info), 15489f7d47b0SAlexander V. Chernikov M_IPFW, M_WAITOK | M_ZERO); 15499f7d47b0SAlexander V. Chernikov 1550b074b7bbSAlexander V. Chernikov ipfw_objhash_bitmap_alloc(ntables, (void *)&new_idx, &new_blocks); 15513b3a8eb9SGleb Smirnoff 15529f7d47b0SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 15533b3a8eb9SGleb Smirnoff 15543b3a8eb9SGleb Smirnoff tbl = (ntables >= V_fw_tables_max) ? V_fw_tables_max : ntables; 1555b074b7bbSAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 1556b074b7bbSAlexander V. Chernikov 15579f7d47b0SAlexander V. Chernikov /* Temporary restrict decreasing max_tables */ 15589f7d47b0SAlexander V. Chernikov if (ntables < V_fw_tables_max) { 15599f7d47b0SAlexander V. Chernikov 15609f7d47b0SAlexander V. Chernikov /* 15619f7d47b0SAlexander V. Chernikov * FIXME: Check if we really can shrink 15629f7d47b0SAlexander V. Chernikov */ 15639f7d47b0SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1564b074b7bbSAlexander V. Chernikov return (EINVAL); 1565b074b7bbSAlexander V. Chernikov } 15663b3a8eb9SGleb Smirnoff 15679f7d47b0SAlexander V. Chernikov /* Copy table info/indices */ 15689f7d47b0SAlexander V. Chernikov memcpy(tablestate, ch->tablestate, sizeof(struct table_info) * tbl); 15699f7d47b0SAlexander V. Chernikov ipfw_objhash_bitmap_merge(ni, &new_idx, &new_blocks); 15703b3a8eb9SGleb Smirnoff 15719f7d47b0SAlexander V. Chernikov IPFW_WLOCK(ch); 15729f7d47b0SAlexander V. Chernikov 15739f7d47b0SAlexander V. Chernikov /* Change pointers */ 15749f7d47b0SAlexander V. Chernikov old_tablestate = ch->tablestate; 15759f7d47b0SAlexander V. Chernikov ch->tablestate = tablestate; 15769f7d47b0SAlexander V. Chernikov ipfw_objhash_bitmap_swap(ni, &new_idx, &new_blocks); 15773b3a8eb9SGleb Smirnoff 15783b3a8eb9SGleb Smirnoff ntables_old = V_fw_tables_max; 15793b3a8eb9SGleb Smirnoff V_fw_tables_max = ntables; 15803b3a8eb9SGleb Smirnoff 15813b3a8eb9SGleb Smirnoff IPFW_WUNLOCK(ch); 158268394ec8SAlexander V. Chernikov 158368394ec8SAlexander V. Chernikov /* Notify all consumers that their @ti pointer has changed */ 158468394ec8SAlexander V. Chernikov ti = (struct table_info *)ch->tablestate; 158568394ec8SAlexander V. Chernikov for (i = 0; i < tbl; i++, ti++) { 158668394ec8SAlexander V. Chernikov if (ti->lookup == NULL) 158768394ec8SAlexander V. Chernikov continue; 158868394ec8SAlexander V. Chernikov tc = (struct table_config *)ipfw_objhash_lookup_kidx(ni, i); 158968394ec8SAlexander V. Chernikov if (tc == NULL || tc->ta->change_ti == NULL) 159068394ec8SAlexander V. Chernikov continue; 159168394ec8SAlexander V. Chernikov 159268394ec8SAlexander V. Chernikov tc->ta->change_ti(tc->astate, ti); 159368394ec8SAlexander V. Chernikov } 159468394ec8SAlexander V. Chernikov 15959f7d47b0SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 15963b3a8eb9SGleb Smirnoff 15973b3a8eb9SGleb Smirnoff /* Free old pointers */ 15989f7d47b0SAlexander V. Chernikov free(old_tablestate, M_IPFW); 1599b074b7bbSAlexander V. Chernikov ipfw_objhash_bitmap_free(new_idx, new_blocks); 16003b3a8eb9SGleb Smirnoff 16013b3a8eb9SGleb Smirnoff return (0); 16023b3a8eb9SGleb Smirnoff } 16033b3a8eb9SGleb Smirnoff 1604a73d728dSAlexander V. Chernikov /* 16056951cecfSAndrey V. Elsukov * Lookup table's named object by its @kidx. 16066951cecfSAndrey V. Elsukov */ 16076951cecfSAndrey V. Elsukov struct named_object * 16086951cecfSAndrey V. Elsukov ipfw_objhash_lookup_table_kidx(struct ip_fw_chain *ch, uint16_t kidx) 16096951cecfSAndrey V. Elsukov { 16106951cecfSAndrey V. Elsukov 16116951cecfSAndrey V. Elsukov return (ipfw_objhash_lookup_kidx(CHAIN_TO_NI(ch), kidx)); 16126951cecfSAndrey V. Elsukov } 16136951cecfSAndrey V. Elsukov 16146951cecfSAndrey V. Elsukov /* 16156951cecfSAndrey V. Elsukov * Take reference to table specified in @ntlv. 16166951cecfSAndrey V. Elsukov * On success return its @kidx. 16176951cecfSAndrey V. Elsukov */ 16186951cecfSAndrey V. Elsukov int 16196951cecfSAndrey V. Elsukov ipfw_ref_table(struct ip_fw_chain *ch, ipfw_obj_ntlv *ntlv, uint16_t *kidx) 16206951cecfSAndrey V. Elsukov { 16216951cecfSAndrey V. Elsukov struct tid_info ti; 16226951cecfSAndrey V. Elsukov struct table_config *tc; 16236951cecfSAndrey V. Elsukov int error; 16246951cecfSAndrey V. Elsukov 16256951cecfSAndrey V. Elsukov IPFW_UH_WLOCK_ASSERT(ch); 16266951cecfSAndrey V. Elsukov 16276951cecfSAndrey V. Elsukov ntlv_to_ti(ntlv, &ti); 16286951cecfSAndrey V. Elsukov error = find_table_err(CHAIN_TO_NI(ch), &ti, &tc); 16296951cecfSAndrey V. Elsukov if (error != 0) 16306951cecfSAndrey V. Elsukov return (error); 16316951cecfSAndrey V. Elsukov 16326951cecfSAndrey V. Elsukov if (tc == NULL) 16336951cecfSAndrey V. Elsukov return (ESRCH); 16346951cecfSAndrey V. Elsukov 16356951cecfSAndrey V. Elsukov tc_ref(tc); 16366951cecfSAndrey V. Elsukov *kidx = tc->no.kidx; 16376951cecfSAndrey V. Elsukov 16386951cecfSAndrey V. Elsukov return (0); 16396951cecfSAndrey V. Elsukov } 16406951cecfSAndrey V. Elsukov 16416951cecfSAndrey V. Elsukov void 16426951cecfSAndrey V. Elsukov ipfw_unref_table(struct ip_fw_chain *ch, uint16_t kidx) 16436951cecfSAndrey V. Elsukov { 16446951cecfSAndrey V. Elsukov 16456951cecfSAndrey V. Elsukov struct namedobj_instance *ni; 16466951cecfSAndrey V. Elsukov struct named_object *no; 16476951cecfSAndrey V. Elsukov 16486951cecfSAndrey V. Elsukov IPFW_UH_WLOCK_ASSERT(ch); 16496951cecfSAndrey V. Elsukov ni = CHAIN_TO_NI(ch); 16506951cecfSAndrey V. Elsukov no = ipfw_objhash_lookup_kidx(ni, kidx); 16516951cecfSAndrey V. Elsukov KASSERT(no != NULL, ("Table with index %d not found", kidx)); 16526951cecfSAndrey V. Elsukov no->refcnt--; 16536951cecfSAndrey V. Elsukov } 16546951cecfSAndrey V. Elsukov 16556951cecfSAndrey V. Elsukov /* 1656c8d5d308SAlexander V. Chernikov * Lookup an IP @addr in table @tbl. 1657c8d5d308SAlexander V. Chernikov * Stores found value in @val. 1658c8d5d308SAlexander V. Chernikov * 1659c8d5d308SAlexander V. Chernikov * Returns 1 if @addr was found. 1660c8d5d308SAlexander V. Chernikov */ 16613b3a8eb9SGleb Smirnoff int 16623b3a8eb9SGleb Smirnoff ipfw_lookup_table(struct ip_fw_chain *ch, uint16_t tbl, in_addr_t addr, 16633b3a8eb9SGleb Smirnoff uint32_t *val) 16643b3a8eb9SGleb Smirnoff { 16659f7d47b0SAlexander V. Chernikov struct table_info *ti; 16663b3a8eb9SGleb Smirnoff 1667c8d5d308SAlexander V. Chernikov ti = KIDX_TO_TI(ch, tbl); 16689f7d47b0SAlexander V. Chernikov 16699f7d47b0SAlexander V. Chernikov return (ti->lookup(ti, &addr, sizeof(in_addr_t), val)); 16703b3a8eb9SGleb Smirnoff } 16719f7d47b0SAlexander V. Chernikov 1672c8d5d308SAlexander V. Chernikov /* 1673c8d5d308SAlexander V. Chernikov * Lookup an arbtrary key @paddr of legth @plen in table @tbl. 1674c8d5d308SAlexander V. Chernikov * Stores found value in @val. 1675c8d5d308SAlexander V. Chernikov * 1676c8d5d308SAlexander V. Chernikov * Returns 1 if key was found. 1677c8d5d308SAlexander V. Chernikov */ 16789f7d47b0SAlexander V. Chernikov int 16799f7d47b0SAlexander V. Chernikov ipfw_lookup_table_extended(struct ip_fw_chain *ch, uint16_t tbl, uint16_t plen, 16809f7d47b0SAlexander V. Chernikov void *paddr, uint32_t *val) 16819f7d47b0SAlexander V. Chernikov { 16829f7d47b0SAlexander V. Chernikov struct table_info *ti; 16839f7d47b0SAlexander V. Chernikov 1684c8d5d308SAlexander V. Chernikov ti = KIDX_TO_TI(ch, tbl); 16859f7d47b0SAlexander V. Chernikov 16869f7d47b0SAlexander V. Chernikov return (ti->lookup(ti, paddr, plen, val)); 16879f7d47b0SAlexander V. Chernikov } 16889f7d47b0SAlexander V. Chernikov 16899f7d47b0SAlexander V. Chernikov /* 16909f7d47b0SAlexander V. Chernikov * Info/List/dump support for tables. 16919f7d47b0SAlexander V. Chernikov * 16929f7d47b0SAlexander V. Chernikov */ 16939f7d47b0SAlexander V. Chernikov 1694f1220db8SAlexander V. Chernikov /* 1695d3a4f924SAlexander V. Chernikov * High-level 'get' cmds sysctl handlers 1696d3a4f924SAlexander V. Chernikov */ 1697d3a4f924SAlexander V. Chernikov 1698d3a4f924SAlexander V. Chernikov /* 1699d3a4f924SAlexander V. Chernikov * Lists all tables currently available in kernel. 1700ac35ff17SAlexander V. Chernikov * Data layout (v0)(current): 1701d3a4f924SAlexander V. Chernikov * Request: [ ipfw_obj_lheader ], size = ipfw_obj_lheader.size 1702d3a4f924SAlexander V. Chernikov * Reply: [ ipfw_obj_lheader ipfw_xtable_info x N ] 1703d3a4f924SAlexander V. Chernikov * 1704d3a4f924SAlexander V. Chernikov * Returns 0 on success 1705d3a4f924SAlexander V. Chernikov */ 17066b988f3aSAlexander V. Chernikov static int 17076b988f3aSAlexander V. Chernikov list_tables(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 1708e822d936SAlexander V. Chernikov struct sockopt_data *sd) 1709f1220db8SAlexander V. Chernikov { 1710f1220db8SAlexander V. Chernikov struct _ipfw_obj_lheader *olh; 1711f1220db8SAlexander V. Chernikov int error; 1712f1220db8SAlexander V. Chernikov 17132d99a349SAlexander V. Chernikov olh = (struct _ipfw_obj_lheader *)ipfw_get_sopt_header(sd,sizeof(*olh)); 17142d99a349SAlexander V. Chernikov if (olh == NULL) 1715d3a4f924SAlexander V. Chernikov return (EINVAL); 171668394ec8SAlexander V. Chernikov if (sd->valsize < olh->size) 171768394ec8SAlexander V. Chernikov return (EINVAL); 1718d3a4f924SAlexander V. Chernikov 1719f1220db8SAlexander V. Chernikov IPFW_UH_RLOCK(ch); 17202d99a349SAlexander V. Chernikov error = export_tables(ch, olh, sd); 1721f1220db8SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 1722f1220db8SAlexander V. Chernikov 1723f1220db8SAlexander V. Chernikov return (error); 1724f1220db8SAlexander V. Chernikov } 1725f1220db8SAlexander V. Chernikov 1726f1220db8SAlexander V. Chernikov /* 17272d99a349SAlexander V. Chernikov * Store table info to buffer provided by @sd. 1728ac35ff17SAlexander V. Chernikov * Data layout (v0)(current): 1729d3a4f924SAlexander V. Chernikov * Request: [ ipfw_obj_header ipfw_xtable_info(empty)] 1730d3a4f924SAlexander V. Chernikov * Reply: [ ipfw_obj_header ipfw_xtable_info ] 1731d3a4f924SAlexander V. Chernikov * 1732d3a4f924SAlexander V. Chernikov * Returns 0 on success. 1733d3a4f924SAlexander V. Chernikov */ 17346b988f3aSAlexander V. Chernikov static int 17356b988f3aSAlexander V. Chernikov describe_table(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 1736e822d936SAlexander V. Chernikov struct sockopt_data *sd) 1737d3a4f924SAlexander V. Chernikov { 1738d3a4f924SAlexander V. Chernikov struct _ipfw_obj_header *oh; 1739d3a4f924SAlexander V. Chernikov struct table_config *tc; 1740d3a4f924SAlexander V. Chernikov struct tid_info ti; 1741d3a4f924SAlexander V. Chernikov size_t sz; 1742d3a4f924SAlexander V. Chernikov 1743d3a4f924SAlexander V. Chernikov sz = sizeof(*oh) + sizeof(ipfw_xtable_info); 17442d99a349SAlexander V. Chernikov oh = (struct _ipfw_obj_header *)ipfw_get_sopt_header(sd, sz); 17452d99a349SAlexander V. Chernikov if (oh == NULL) 1746d3a4f924SAlexander V. Chernikov return (EINVAL); 1747d3a4f924SAlexander V. Chernikov 1748d3a4f924SAlexander V. Chernikov objheader_to_ti(oh, &ti); 1749d3a4f924SAlexander V. Chernikov 1750d3a4f924SAlexander V. Chernikov IPFW_UH_RLOCK(ch); 1751d3a4f924SAlexander V. Chernikov if ((tc = find_table(CHAIN_TO_NI(ch), &ti)) == NULL) { 1752d3a4f924SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 1753d3a4f924SAlexander V. Chernikov return (ESRCH); 1754d3a4f924SAlexander V. Chernikov } 1755d3a4f924SAlexander V. Chernikov 1756ac35ff17SAlexander V. Chernikov export_table_info(ch, tc, (ipfw_xtable_info *)(oh + 1)); 1757d3a4f924SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 1758d3a4f924SAlexander V. Chernikov 17592d99a349SAlexander V. Chernikov return (0); 1760d3a4f924SAlexander V. Chernikov } 1761d3a4f924SAlexander V. Chernikov 1762d3a4f924SAlexander V. Chernikov /* 1763adf3b2b9SAlexander V. Chernikov * Modifies existing table. 1764adf3b2b9SAlexander V. Chernikov * Data layout (v0)(current): 1765adf3b2b9SAlexander V. Chernikov * Request: [ ipfw_obj_header ipfw_xtable_info ] 1766adf3b2b9SAlexander V. Chernikov * 1767adf3b2b9SAlexander V. Chernikov * Returns 0 on success 1768adf3b2b9SAlexander V. Chernikov */ 17696b988f3aSAlexander V. Chernikov static int 17706b988f3aSAlexander V. Chernikov modify_table(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 1771adf3b2b9SAlexander V. Chernikov struct sockopt_data *sd) 1772adf3b2b9SAlexander V. Chernikov { 1773adf3b2b9SAlexander V. Chernikov struct _ipfw_obj_header *oh; 1774adf3b2b9SAlexander V. Chernikov ipfw_xtable_info *i; 1775adf3b2b9SAlexander V. Chernikov char *tname; 1776adf3b2b9SAlexander V. Chernikov struct tid_info ti; 1777adf3b2b9SAlexander V. Chernikov struct namedobj_instance *ni; 1778adf3b2b9SAlexander V. Chernikov struct table_config *tc; 1779adf3b2b9SAlexander V. Chernikov 1780adf3b2b9SAlexander V. Chernikov if (sd->valsize != sizeof(*oh) + sizeof(ipfw_xtable_info)) 1781adf3b2b9SAlexander V. Chernikov return (EINVAL); 1782adf3b2b9SAlexander V. Chernikov 1783adf3b2b9SAlexander V. Chernikov oh = (struct _ipfw_obj_header *)sd->kbuf; 1784adf3b2b9SAlexander V. Chernikov i = (ipfw_xtable_info *)(oh + 1); 1785adf3b2b9SAlexander V. Chernikov 1786adf3b2b9SAlexander V. Chernikov /* 1787adf3b2b9SAlexander V. Chernikov * Verify user-supplied strings. 1788adf3b2b9SAlexander V. Chernikov * Check for null-terminated/zero-length strings/ 1789adf3b2b9SAlexander V. Chernikov */ 1790adf3b2b9SAlexander V. Chernikov tname = oh->ntlv.name; 1791f81431ccSAndrey V. Elsukov if (check_table_name(tname) != 0) 1792adf3b2b9SAlexander V. Chernikov return (EINVAL); 1793adf3b2b9SAlexander V. Chernikov 1794adf3b2b9SAlexander V. Chernikov objheader_to_ti(oh, &ti); 1795adf3b2b9SAlexander V. Chernikov ti.type = i->type; 1796adf3b2b9SAlexander V. Chernikov 1797adf3b2b9SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 1798adf3b2b9SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 1799adf3b2b9SAlexander V. Chernikov if ((tc = find_table(ni, &ti)) == NULL) { 1800adf3b2b9SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1801adf3b2b9SAlexander V. Chernikov return (ESRCH); 1802adf3b2b9SAlexander V. Chernikov } 1803fd0869d5SAlexander V. Chernikov 1804fd0869d5SAlexander V. Chernikov /* Do not support any modifications for readonly tables */ 1805fd0869d5SAlexander V. Chernikov if ((tc->ta->flags & TA_FLAG_READONLY) != 0) { 1806fd0869d5SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1807fd0869d5SAlexander V. Chernikov return (EACCES); 1808fd0869d5SAlexander V. Chernikov } 1809fd0869d5SAlexander V. Chernikov 1810adf3b2b9SAlexander V. Chernikov if ((i->mflags & IPFW_TMFLAGS_LIMIT) != 0) 1811adf3b2b9SAlexander V. Chernikov tc->limit = i->limit; 18124f43138aSAlexander V. Chernikov if ((i->mflags & IPFW_TMFLAGS_LOCK) != 0) 18134f43138aSAlexander V. Chernikov tc->locked = ((i->flags & IPFW_TGFLAGS_LOCKED) != 0); 1814adf3b2b9SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1815adf3b2b9SAlexander V. Chernikov 1816adf3b2b9SAlexander V. Chernikov return (0); 1817adf3b2b9SAlexander V. Chernikov } 1818adf3b2b9SAlexander V. Chernikov 1819adf3b2b9SAlexander V. Chernikov /* 18209490a627SAlexander V. Chernikov * Creates new table. 1821ac35ff17SAlexander V. Chernikov * Data layout (v0)(current): 18229490a627SAlexander V. Chernikov * Request: [ ipfw_obj_header ipfw_xtable_info ] 18239490a627SAlexander V. Chernikov * 18249490a627SAlexander V. Chernikov * Returns 0 on success 18259490a627SAlexander V. Chernikov */ 18266b988f3aSAlexander V. Chernikov static int 18276b988f3aSAlexander V. Chernikov create_table(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 1828ac35ff17SAlexander V. Chernikov struct sockopt_data *sd) 18299490a627SAlexander V. Chernikov { 18309490a627SAlexander V. Chernikov struct _ipfw_obj_header *oh; 18319490a627SAlexander V. Chernikov ipfw_xtable_info *i; 18329490a627SAlexander V. Chernikov char *tname, *aname; 18339490a627SAlexander V. Chernikov struct tid_info ti; 18349490a627SAlexander V. Chernikov struct namedobj_instance *ni; 18359490a627SAlexander V. Chernikov 1836ac35ff17SAlexander V. Chernikov if (sd->valsize != sizeof(*oh) + sizeof(ipfw_xtable_info)) 18379490a627SAlexander V. Chernikov return (EINVAL); 18389490a627SAlexander V. Chernikov 1839ac35ff17SAlexander V. Chernikov oh = (struct _ipfw_obj_header *)sd->kbuf; 18409490a627SAlexander V. Chernikov i = (ipfw_xtable_info *)(oh + 1); 18419490a627SAlexander V. Chernikov 18429490a627SAlexander V. Chernikov /* 18439490a627SAlexander V. Chernikov * Verify user-supplied strings. 18442d99a349SAlexander V. Chernikov * Check for null-terminated/zero-length strings/ 18459490a627SAlexander V. Chernikov */ 1846ac35ff17SAlexander V. Chernikov tname = oh->ntlv.name; 18479490a627SAlexander V. Chernikov aname = i->algoname; 1848f81431ccSAndrey V. Elsukov if (check_table_name(tname) != 0 || 18499490a627SAlexander V. Chernikov strnlen(aname, sizeof(i->algoname)) == sizeof(i->algoname)) 18509490a627SAlexander V. Chernikov return (EINVAL); 18519490a627SAlexander V. Chernikov 18529490a627SAlexander V. Chernikov if (aname[0] == '\0') { 18539490a627SAlexander V. Chernikov /* Use default algorithm */ 18549490a627SAlexander V. Chernikov aname = NULL; 18559490a627SAlexander V. Chernikov } 18569490a627SAlexander V. Chernikov 18579490a627SAlexander V. Chernikov objheader_to_ti(oh, &ti); 1858ac35ff17SAlexander V. Chernikov ti.type = i->type; 18599490a627SAlexander V. Chernikov 18609490a627SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 18619490a627SAlexander V. Chernikov 18629490a627SAlexander V. Chernikov IPFW_UH_RLOCK(ch); 1863038263c3SAlexander V. Chernikov if (find_table(ni, &ti) != NULL) { 18649490a627SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 18659490a627SAlexander V. Chernikov return (EEXIST); 18669490a627SAlexander V. Chernikov } 18679490a627SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 18689490a627SAlexander V. Chernikov 1869867708f7SAlexander V. Chernikov return (create_table_internal(ch, &ti, aname, i, NULL, 0)); 1870db785d31SAlexander V. Chernikov } 1871db785d31SAlexander V. Chernikov 1872db785d31SAlexander V. Chernikov /* 1873db785d31SAlexander V. Chernikov * Creates new table based on @ti and @aname. 1874db785d31SAlexander V. Chernikov * 1875db785d31SAlexander V. Chernikov * Assume @aname to be checked and valid. 1876867708f7SAlexander V. Chernikov * Stores allocated table kidx inside @pkidx (if non-NULL). 18770468c5baSAlexander V. Chernikov * Reference created table if @compat is non-zero. 1878db785d31SAlexander V. Chernikov * 1879db785d31SAlexander V. Chernikov * Returns 0 on success. 1880db785d31SAlexander V. Chernikov */ 1881db785d31SAlexander V. Chernikov static int 1882db785d31SAlexander V. Chernikov create_table_internal(struct ip_fw_chain *ch, struct tid_info *ti, 1883867708f7SAlexander V. Chernikov char *aname, ipfw_xtable_info *i, uint16_t *pkidx, int compat) 1884db785d31SAlexander V. Chernikov { 1885db785d31SAlexander V. Chernikov struct namedobj_instance *ni; 1886c8d5d308SAlexander V. Chernikov struct table_config *tc, *tc_new, *tmp; 1887db785d31SAlexander V. Chernikov struct table_algo *ta; 1888db785d31SAlexander V. Chernikov uint16_t kidx; 1889db785d31SAlexander V. Chernikov 1890db785d31SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 1891db785d31SAlexander V. Chernikov 1892db785d31SAlexander V. Chernikov ta = find_table_algo(CHAIN_TO_TCFG(ch), ti, aname); 18939490a627SAlexander V. Chernikov if (ta == NULL) 18949490a627SAlexander V. Chernikov return (ENOTSUP); 18959490a627SAlexander V. Chernikov 18960cba2b28SAlexander V. Chernikov tc = alloc_table_config(ch, ti, ta, aname, i->tflags); 18974c0c07a5SAlexander V. Chernikov if (tc == NULL) 18989490a627SAlexander V. Chernikov return (ENOMEM); 18999490a627SAlexander V. Chernikov 19000cba2b28SAlexander V. Chernikov tc->vmask = i->vmask; 19014c0c07a5SAlexander V. Chernikov tc->limit = i->limit; 1902fd0869d5SAlexander V. Chernikov if (ta->flags & TA_FLAG_READONLY) 1903fd0869d5SAlexander V. Chernikov tc->locked = 1; 1904fd0869d5SAlexander V. Chernikov else 19054f43138aSAlexander V. Chernikov tc->locked = (i->flags & IPFW_TGFLAGS_LOCKED) != 0; 19064c0c07a5SAlexander V. Chernikov 19079490a627SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 1908db785d31SAlexander V. Chernikov 1909db785d31SAlexander V. Chernikov /* Check if table has been already created */ 19100468c5baSAlexander V. Chernikov tc_new = find_table(ni, ti); 19110468c5baSAlexander V. Chernikov if (tc_new != NULL) { 19120468c5baSAlexander V. Chernikov 19130468c5baSAlexander V. Chernikov /* 19140468c5baSAlexander V. Chernikov * Compat: do not fail if we're 19150468c5baSAlexander V. Chernikov * requesting to create existing table 19160cba2b28SAlexander V. Chernikov * which has the same type 19170468c5baSAlexander V. Chernikov */ 191874b22066SAlexander V. Chernikov if (compat == 0 || tc_new->no.subtype != tc->no.subtype) { 1919db785d31SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1920db785d31SAlexander V. Chernikov free_table_config(ni, tc); 1921db785d31SAlexander V. Chernikov return (EEXIST); 1922db785d31SAlexander V. Chernikov } 1923db785d31SAlexander V. Chernikov 19240468c5baSAlexander V. Chernikov /* Exchange tc and tc_new for proper refcounting & freeing */ 19250468c5baSAlexander V. Chernikov tmp = tc; 19260468c5baSAlexander V. Chernikov tc = tc_new; 19270468c5baSAlexander V. Chernikov tc_new = tmp; 19280468c5baSAlexander V. Chernikov } else { 19290468c5baSAlexander V. Chernikov /* New table */ 1930ac35ff17SAlexander V. Chernikov if (ipfw_objhash_alloc_idx(ni, &kidx) != 0) { 19319490a627SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1932db785d31SAlexander V. Chernikov printf("Unable to allocate table index." 1933db785d31SAlexander V. Chernikov " Consider increasing net.inet.ip.fw.tables_max"); 19349490a627SAlexander V. Chernikov free_table_config(ni, tc); 19359490a627SAlexander V. Chernikov return (EBUSY); 19369490a627SAlexander V. Chernikov } 19379490a627SAlexander V. Chernikov tc->no.kidx = kidx; 193874b22066SAlexander V. Chernikov tc->no.etlv = IPFW_TLV_TBL_NAME; 19399490a627SAlexander V. Chernikov 19409490a627SAlexander V. Chernikov IPFW_WLOCK(ch); 19419490a627SAlexander V. Chernikov link_table(ch, tc); 19429490a627SAlexander V. Chernikov IPFW_WUNLOCK(ch); 19430468c5baSAlexander V. Chernikov } 19440468c5baSAlexander V. Chernikov 19450468c5baSAlexander V. Chernikov if (compat != 0) 19460468c5baSAlexander V. Chernikov tc->no.refcnt++; 19470468c5baSAlexander V. Chernikov if (pkidx != NULL) 19480468c5baSAlexander V. Chernikov *pkidx = tc->no.kidx; 19499490a627SAlexander V. Chernikov 19509490a627SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 19519490a627SAlexander V. Chernikov 19520468c5baSAlexander V. Chernikov if (tc_new != NULL) 19530468c5baSAlexander V. Chernikov free_table_config(ni, tc_new); 19540468c5baSAlexander V. Chernikov 19559490a627SAlexander V. Chernikov return (0); 19569490a627SAlexander V. Chernikov } 19579490a627SAlexander V. Chernikov 195846d52008SAlexander V. Chernikov static void 195946d52008SAlexander V. Chernikov ntlv_to_ti(ipfw_obj_ntlv *ntlv, struct tid_info *ti) 1960d3a4f924SAlexander V. Chernikov { 1961d3a4f924SAlexander V. Chernikov 1962d3a4f924SAlexander V. Chernikov memset(ti, 0, sizeof(struct tid_info)); 196346d52008SAlexander V. Chernikov ti->set = ntlv->set; 196446d52008SAlexander V. Chernikov ti->uidx = ntlv->idx; 196546d52008SAlexander V. Chernikov ti->tlvs = ntlv; 196646d52008SAlexander V. Chernikov ti->tlen = ntlv->head.length; 196746d52008SAlexander V. Chernikov } 196846d52008SAlexander V. Chernikov 196946d52008SAlexander V. Chernikov static void 197046d52008SAlexander V. Chernikov objheader_to_ti(struct _ipfw_obj_header *oh, struct tid_info *ti) 197146d52008SAlexander V. Chernikov { 197246d52008SAlexander V. Chernikov 197346d52008SAlexander V. Chernikov ntlv_to_ti(&oh->ntlv, ti); 1974d3a4f924SAlexander V. Chernikov } 1975d3a4f924SAlexander V. Chernikov 197674b22066SAlexander V. Chernikov struct namedobj_instance * 197774b22066SAlexander V. Chernikov ipfw_get_table_objhash(struct ip_fw_chain *ch) 197874b22066SAlexander V. Chernikov { 197974b22066SAlexander V. Chernikov 198074b22066SAlexander V. Chernikov return (CHAIN_TO_NI(ch)); 198174b22066SAlexander V. Chernikov } 198274b22066SAlexander V. Chernikov 198335e1bbd0SAlexander V. Chernikov /* 198435e1bbd0SAlexander V. Chernikov * Exports basic table info as name TLV. 198535e1bbd0SAlexander V. Chernikov * Used inside dump_static_rules() to provide info 198635e1bbd0SAlexander V. Chernikov * about all tables referenced by current ruleset. 198735e1bbd0SAlexander V. Chernikov * 198835e1bbd0SAlexander V. Chernikov * Returns 0 on success. 198935e1bbd0SAlexander V. Chernikov */ 1990563b5ab1SAlexander V. Chernikov int 1991563b5ab1SAlexander V. Chernikov ipfw_export_table_ntlv(struct ip_fw_chain *ch, uint16_t kidx, 1992563b5ab1SAlexander V. Chernikov struct sockopt_data *sd) 1993563b5ab1SAlexander V. Chernikov { 1994563b5ab1SAlexander V. Chernikov struct namedobj_instance *ni; 1995563b5ab1SAlexander V. Chernikov struct named_object *no; 1996563b5ab1SAlexander V. Chernikov ipfw_obj_ntlv *ntlv; 1997563b5ab1SAlexander V. Chernikov 1998563b5ab1SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 1999563b5ab1SAlexander V. Chernikov 2000ac35ff17SAlexander V. Chernikov no = ipfw_objhash_lookup_kidx(ni, kidx); 2001563b5ab1SAlexander V. Chernikov KASSERT(no != NULL, ("invalid table kidx passed")); 2002563b5ab1SAlexander V. Chernikov 2003563b5ab1SAlexander V. Chernikov ntlv = (ipfw_obj_ntlv *)ipfw_get_sopt_space(sd, sizeof(*ntlv)); 2004563b5ab1SAlexander V. Chernikov if (ntlv == NULL) 2005563b5ab1SAlexander V. Chernikov return (ENOMEM); 2006563b5ab1SAlexander V. Chernikov 2007563b5ab1SAlexander V. Chernikov ntlv->head.type = IPFW_TLV_TBL_NAME; 2008563b5ab1SAlexander V. Chernikov ntlv->head.length = sizeof(*ntlv); 2009563b5ab1SAlexander V. Chernikov ntlv->idx = no->kidx; 2010563b5ab1SAlexander V. Chernikov strlcpy(ntlv->name, no->name, sizeof(ntlv->name)); 2011563b5ab1SAlexander V. Chernikov 2012563b5ab1SAlexander V. Chernikov return (0); 2013563b5ab1SAlexander V. Chernikov } 2014563b5ab1SAlexander V. Chernikov 2015d3b00c08SAlexander V. Chernikov struct dump_args { 20160cba2b28SAlexander V. Chernikov struct ip_fw_chain *ch; 2017d3b00c08SAlexander V. Chernikov struct table_info *ti; 2018d3b00c08SAlexander V. Chernikov struct table_config *tc; 2019d3b00c08SAlexander V. Chernikov struct sockopt_data *sd; 2020d3b00c08SAlexander V. Chernikov uint32_t cnt; 2021d3b00c08SAlexander V. Chernikov uint16_t uidx; 2022d3b00c08SAlexander V. Chernikov int error; 2023d3b00c08SAlexander V. Chernikov uint32_t size; 20244dff4ae0SAlexander V. Chernikov ipfw_table_entry *ent; 20254dff4ae0SAlexander V. Chernikov ta_foreach_f *f; 20264dff4ae0SAlexander V. Chernikov void *farg; 2027d3b00c08SAlexander V. Chernikov ipfw_obj_tentry tent; 2028d3b00c08SAlexander V. Chernikov }; 2029d3b00c08SAlexander V. Chernikov 2030d3b00c08SAlexander V. Chernikov static int 2031d3b00c08SAlexander V. Chernikov count_ext_entries(void *e, void *arg) 2032d3b00c08SAlexander V. Chernikov { 2033d3b00c08SAlexander V. Chernikov struct dump_args *da; 2034d3b00c08SAlexander V. Chernikov 2035d3b00c08SAlexander V. Chernikov da = (struct dump_args *)arg; 2036d3b00c08SAlexander V. Chernikov da->cnt++; 2037d3b00c08SAlexander V. Chernikov 2038d3b00c08SAlexander V. Chernikov return (0); 2039d3b00c08SAlexander V. Chernikov } 2040d3b00c08SAlexander V. Chernikov 2041d3b00c08SAlexander V. Chernikov /* 2042d3b00c08SAlexander V. Chernikov * Gets number of items from table either using 2043d3b00c08SAlexander V. Chernikov * internal counter or calling algo callback for 2044d3b00c08SAlexander V. Chernikov * externally-managed tables. 2045d3b00c08SAlexander V. Chernikov * 2046d3b00c08SAlexander V. Chernikov * Returns number of records. 2047d3b00c08SAlexander V. Chernikov */ 2048d3b00c08SAlexander V. Chernikov static uint32_t 2049d3b00c08SAlexander V. Chernikov table_get_count(struct ip_fw_chain *ch, struct table_config *tc) 2050d3b00c08SAlexander V. Chernikov { 2051d3b00c08SAlexander V. Chernikov struct table_info *ti; 2052d3b00c08SAlexander V. Chernikov struct table_algo *ta; 2053d3b00c08SAlexander V. Chernikov struct dump_args da; 2054d3b00c08SAlexander V. Chernikov 2055d3b00c08SAlexander V. Chernikov ti = KIDX_TO_TI(ch, tc->no.kidx); 2056d3b00c08SAlexander V. Chernikov ta = tc->ta; 2057d3b00c08SAlexander V. Chernikov 2058d3b00c08SAlexander V. Chernikov /* Use internal counter for self-managed tables */ 2059d3b00c08SAlexander V. Chernikov if ((ta->flags & TA_FLAG_READONLY) == 0) 2060d3b00c08SAlexander V. Chernikov return (tc->count); 2061d3b00c08SAlexander V. Chernikov 2062d3b00c08SAlexander V. Chernikov /* Use callback to quickly get number of items */ 2063d3b00c08SAlexander V. Chernikov if ((ta->flags & TA_FLAG_EXTCOUNTER) != 0) 2064d3b00c08SAlexander V. Chernikov return (ta->get_count(tc->astate, ti)); 2065d3b00c08SAlexander V. Chernikov 2066d3b00c08SAlexander V. Chernikov /* Count number of iterms ourselves */ 2067d3b00c08SAlexander V. Chernikov memset(&da, 0, sizeof(da)); 2068d3b00c08SAlexander V. Chernikov ta->foreach(tc->astate, ti, count_ext_entries, &da); 2069d3b00c08SAlexander V. Chernikov 2070d3b00c08SAlexander V. Chernikov return (da.cnt); 2071d3b00c08SAlexander V. Chernikov } 2072f99fbf96SAlexander V. Chernikov 2073f99fbf96SAlexander V. Chernikov /* 207435e1bbd0SAlexander V. Chernikov * Exports table @tc info into standard ipfw_xtable_info format. 207535e1bbd0SAlexander V. Chernikov */ 20769f7d47b0SAlexander V. Chernikov static void 2077ac35ff17SAlexander V. Chernikov export_table_info(struct ip_fw_chain *ch, struct table_config *tc, 2078ac35ff17SAlexander V. Chernikov ipfw_xtable_info *i) 20799f7d47b0SAlexander V. Chernikov { 2080ac35ff17SAlexander V. Chernikov struct table_info *ti; 20815f379342SAlexander V. Chernikov struct table_algo *ta; 20829f7d47b0SAlexander V. Chernikov 208374b22066SAlexander V. Chernikov i->type = tc->no.subtype; 2084914bffb6SAlexander V. Chernikov i->tflags = tc->tflags; 20850cba2b28SAlexander V. Chernikov i->vmask = tc->vmask; 20869f7d47b0SAlexander V. Chernikov i->set = tc->no.set; 20879f7d47b0SAlexander V. Chernikov i->kidx = tc->no.kidx; 20889f7d47b0SAlexander V. Chernikov i->refcnt = tc->no.refcnt; 2089d3b00c08SAlexander V. Chernikov i->count = table_get_count(ch, tc); 20904c0c07a5SAlexander V. Chernikov i->limit = tc->limit; 20914f43138aSAlexander V. Chernikov i->flags |= (tc->locked != 0) ? IPFW_TGFLAGS_LOCKED : 0; 209236738284SAlexander V. Chernikov i->size = i->count * sizeof(ipfw_obj_tentry); 2093f1220db8SAlexander V. Chernikov i->size += sizeof(ipfw_obj_header) + sizeof(ipfw_xtable_info); 20949f7d47b0SAlexander V. Chernikov strlcpy(i->tablename, tc->tablename, sizeof(i->tablename)); 2095ac35ff17SAlexander V. Chernikov ti = KIDX_TO_TI(ch, tc->no.kidx); 20965f379342SAlexander V. Chernikov ta = tc->ta; 20975f379342SAlexander V. Chernikov if (ta->print_config != NULL) { 20985f379342SAlexander V. Chernikov /* Use algo function to print table config to string */ 20995f379342SAlexander V. Chernikov ta->print_config(tc->astate, ti, i->algoname, 2100ac35ff17SAlexander V. Chernikov sizeof(i->algoname)); 2101ac35ff17SAlexander V. Chernikov } else 21025f379342SAlexander V. Chernikov strlcpy(i->algoname, ta->name, sizeof(i->algoname)); 21035f379342SAlexander V. Chernikov /* Dump algo-specific data, if possible */ 21045f379342SAlexander V. Chernikov if (ta->dump_tinfo != NULL) { 21055f379342SAlexander V. Chernikov ta->dump_tinfo(tc->astate, ti, &i->ta_info); 21065f379342SAlexander V. Chernikov i->ta_info.flags |= IPFW_TATFLAGS_DATA; 21075f379342SAlexander V. Chernikov } 21089f7d47b0SAlexander V. Chernikov } 21099f7d47b0SAlexander V. Chernikov 2110ac35ff17SAlexander V. Chernikov struct dump_table_args { 2111ac35ff17SAlexander V. Chernikov struct ip_fw_chain *ch; 2112ac35ff17SAlexander V. Chernikov struct sockopt_data *sd; 2113ac35ff17SAlexander V. Chernikov }; 2114ac35ff17SAlexander V. Chernikov 2115b309f085SAndrey V. Elsukov static int 21169f7d47b0SAlexander V. Chernikov export_table_internal(struct namedobj_instance *ni, struct named_object *no, 21179f7d47b0SAlexander V. Chernikov void *arg) 21183b3a8eb9SGleb Smirnoff { 21199f7d47b0SAlexander V. Chernikov ipfw_xtable_info *i; 2120ac35ff17SAlexander V. Chernikov struct dump_table_args *dta; 21213b3a8eb9SGleb Smirnoff 2122ac35ff17SAlexander V. Chernikov dta = (struct dump_table_args *)arg; 2123ac35ff17SAlexander V. Chernikov 2124ac35ff17SAlexander V. Chernikov i = (ipfw_xtable_info *)ipfw_get_sopt_space(dta->sd, sizeof(*i)); 21257a6ab8f1SPedro F. Giffuni KASSERT(i != NULL, ("previously checked buffer is not enough")); 21269f7d47b0SAlexander V. Chernikov 2127ac35ff17SAlexander V. Chernikov export_table_info(dta->ch, (struct table_config *)no, i); 2128b309f085SAndrey V. Elsukov return (0); 21299f7d47b0SAlexander V. Chernikov } 21309f7d47b0SAlexander V. Chernikov 2131f1220db8SAlexander V. Chernikov /* 2132f1220db8SAlexander V. Chernikov * Export all tables as ipfw_xtable_info structures to 21332d99a349SAlexander V. Chernikov * storage provided by @sd. 213428ea4fa3SAlexander V. Chernikov * 213528ea4fa3SAlexander V. Chernikov * If supplied buffer is too small, fills in required size 213628ea4fa3SAlexander V. Chernikov * and returns ENOMEM. 2137f1220db8SAlexander V. Chernikov * Returns 0 on success. 2138f1220db8SAlexander V. Chernikov */ 2139f1220db8SAlexander V. Chernikov static int 21402d99a349SAlexander V. Chernikov export_tables(struct ip_fw_chain *ch, ipfw_obj_lheader *olh, 21412d99a349SAlexander V. Chernikov struct sockopt_data *sd) 21429f7d47b0SAlexander V. Chernikov { 21439f7d47b0SAlexander V. Chernikov uint32_t size; 21449f7d47b0SAlexander V. Chernikov uint32_t count; 2145ac35ff17SAlexander V. Chernikov struct dump_table_args dta; 21469f7d47b0SAlexander V. Chernikov 21479f7d47b0SAlexander V. Chernikov count = ipfw_objhash_count(CHAIN_TO_NI(ch)); 21489f7d47b0SAlexander V. Chernikov size = count * sizeof(ipfw_xtable_info) + sizeof(ipfw_obj_lheader); 21492d99a349SAlexander V. Chernikov 21502d99a349SAlexander V. Chernikov /* Fill in header regadless of buffer size */ 2151f1220db8SAlexander V. Chernikov olh->count = count; 2152f1220db8SAlexander V. Chernikov olh->objsize = sizeof(ipfw_xtable_info); 21532d99a349SAlexander V. Chernikov 21542d99a349SAlexander V. Chernikov if (size > olh->size) { 21552d99a349SAlexander V. Chernikov olh->size = size; 21569f7d47b0SAlexander V. Chernikov return (ENOMEM); 2157f1220db8SAlexander V. Chernikov } 215868394ec8SAlexander V. Chernikov 21599f7d47b0SAlexander V. Chernikov olh->size = size; 21602d99a349SAlexander V. Chernikov 2161ac35ff17SAlexander V. Chernikov dta.ch = ch; 2162ac35ff17SAlexander V. Chernikov dta.sd = sd; 2163ac35ff17SAlexander V. Chernikov 2164ac35ff17SAlexander V. Chernikov ipfw_objhash_foreach(CHAIN_TO_NI(ch), export_table_internal, &dta); 21659f7d47b0SAlexander V. Chernikov 21663b3a8eb9SGleb Smirnoff return (0); 21673b3a8eb9SGleb Smirnoff } 21683b3a8eb9SGleb Smirnoff 2169f99fbf96SAlexander V. Chernikov /* 2170f99fbf96SAlexander V. Chernikov * Dumps all table data 2171f99fbf96SAlexander V. Chernikov * Data layout (v1)(current): 2172f99fbf96SAlexander V. Chernikov * Request: [ ipfw_obj_header ], size = ipfw_xtable_info.size 2173f99fbf96SAlexander V. Chernikov * Reply: [ ipfw_obj_header ipfw_xtable_info ipfw_obj_tentry x N ] 2174f99fbf96SAlexander V. Chernikov * 2175f99fbf96SAlexander V. Chernikov * Returns 0 on success 2176f99fbf96SAlexander V. Chernikov */ 2177f99fbf96SAlexander V. Chernikov static int 21786b988f3aSAlexander V. Chernikov dump_table_v1(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 21796b988f3aSAlexander V. Chernikov struct sockopt_data *sd) 2180f99fbf96SAlexander V. Chernikov { 2181f99fbf96SAlexander V. Chernikov struct _ipfw_obj_header *oh; 2182f99fbf96SAlexander V. Chernikov ipfw_xtable_info *i; 2183f99fbf96SAlexander V. Chernikov struct tid_info ti; 2184f99fbf96SAlexander V. Chernikov struct table_config *tc; 2185f99fbf96SAlexander V. Chernikov struct table_algo *ta; 2186f99fbf96SAlexander V. Chernikov struct dump_args da; 2187f99fbf96SAlexander V. Chernikov uint32_t sz; 2188f99fbf96SAlexander V. Chernikov 2189f99fbf96SAlexander V. Chernikov sz = sizeof(ipfw_obj_header) + sizeof(ipfw_xtable_info); 2190f99fbf96SAlexander V. Chernikov oh = (struct _ipfw_obj_header *)ipfw_get_sopt_header(sd, sz); 2191f99fbf96SAlexander V. Chernikov if (oh == NULL) 2192f99fbf96SAlexander V. Chernikov return (EINVAL); 2193f99fbf96SAlexander V. Chernikov 2194f99fbf96SAlexander V. Chernikov i = (ipfw_xtable_info *)(oh + 1); 2195f99fbf96SAlexander V. Chernikov objheader_to_ti(oh, &ti); 2196f99fbf96SAlexander V. Chernikov 2197f99fbf96SAlexander V. Chernikov IPFW_UH_RLOCK(ch); 2198f99fbf96SAlexander V. Chernikov if ((tc = find_table(CHAIN_TO_NI(ch), &ti)) == NULL) { 2199f99fbf96SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 2200f99fbf96SAlexander V. Chernikov return (ESRCH); 2201f99fbf96SAlexander V. Chernikov } 2202f99fbf96SAlexander V. Chernikov export_table_info(ch, tc, i); 2203f99fbf96SAlexander V. Chernikov 2204f99fbf96SAlexander V. Chernikov if (sd->valsize < i->size) { 2205f99fbf96SAlexander V. Chernikov 2206f99fbf96SAlexander V. Chernikov /* 2207f99fbf96SAlexander V. Chernikov * Submitted buffer size is not enough. 2208f99fbf96SAlexander V. Chernikov * WE've already filled in @i structure with 2209f99fbf96SAlexander V. Chernikov * relevant table info including size, so we 2210f99fbf96SAlexander V. Chernikov * can return. Buffer will be flushed automatically. 2211f99fbf96SAlexander V. Chernikov */ 2212f99fbf96SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 2213f99fbf96SAlexander V. Chernikov return (ENOMEM); 2214f99fbf96SAlexander V. Chernikov } 2215f99fbf96SAlexander V. Chernikov 2216f99fbf96SAlexander V. Chernikov /* 2217f99fbf96SAlexander V. Chernikov * Do the actual dump in eXtended format 2218f99fbf96SAlexander V. Chernikov */ 2219f99fbf96SAlexander V. Chernikov memset(&da, 0, sizeof(da)); 22200cba2b28SAlexander V. Chernikov da.ch = ch; 2221f99fbf96SAlexander V. Chernikov da.ti = KIDX_TO_TI(ch, tc->no.kidx); 2222f99fbf96SAlexander V. Chernikov da.tc = tc; 2223f99fbf96SAlexander V. Chernikov da.sd = sd; 2224f99fbf96SAlexander V. Chernikov 2225f99fbf96SAlexander V. Chernikov ta = tc->ta; 2226f99fbf96SAlexander V. Chernikov 2227f99fbf96SAlexander V. Chernikov ta->foreach(tc->astate, da.ti, dump_table_tentry, &da); 2228f99fbf96SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 2229f99fbf96SAlexander V. Chernikov 2230f99fbf96SAlexander V. Chernikov return (da.error); 2231f99fbf96SAlexander V. Chernikov } 2232f99fbf96SAlexander V. Chernikov 2233f99fbf96SAlexander V. Chernikov /* 2234f99fbf96SAlexander V. Chernikov * Dumps all table data 2235f99fbf96SAlexander V. Chernikov * Data layout (version 0)(legacy): 2236f99fbf96SAlexander V. Chernikov * Request: [ ipfw_xtable ], size = IP_FW_TABLE_XGETSIZE() 2237f99fbf96SAlexander V. Chernikov * Reply: [ ipfw_xtable ipfw_table_xentry x N ] 2238f99fbf96SAlexander V. Chernikov * 2239f99fbf96SAlexander V. Chernikov * Returns 0 on success 2240f99fbf96SAlexander V. Chernikov */ 2241f99fbf96SAlexander V. Chernikov static int 22426b988f3aSAlexander V. Chernikov dump_table_v0(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 22436b988f3aSAlexander V. Chernikov struct sockopt_data *sd) 2244f99fbf96SAlexander V. Chernikov { 2245f99fbf96SAlexander V. Chernikov ipfw_xtable *xtbl; 2246f99fbf96SAlexander V. Chernikov struct tid_info ti; 2247f99fbf96SAlexander V. Chernikov struct table_config *tc; 2248f99fbf96SAlexander V. Chernikov struct table_algo *ta; 2249f99fbf96SAlexander V. Chernikov struct dump_args da; 2250d3b00c08SAlexander V. Chernikov size_t sz, count; 2251f99fbf96SAlexander V. Chernikov 2252f99fbf96SAlexander V. Chernikov xtbl = (ipfw_xtable *)ipfw_get_sopt_header(sd, sizeof(ipfw_xtable)); 2253f99fbf96SAlexander V. Chernikov if (xtbl == NULL) 2254f99fbf96SAlexander V. Chernikov return (EINVAL); 2255f99fbf96SAlexander V. Chernikov 2256f99fbf96SAlexander V. Chernikov memset(&ti, 0, sizeof(ti)); 2257f99fbf96SAlexander V. Chernikov ti.uidx = xtbl->tbl; 2258f99fbf96SAlexander V. Chernikov 2259f99fbf96SAlexander V. Chernikov IPFW_UH_RLOCK(ch); 2260f99fbf96SAlexander V. Chernikov if ((tc = find_table(CHAIN_TO_NI(ch), &ti)) == NULL) { 2261f99fbf96SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 2262f99fbf96SAlexander V. Chernikov return (0); 2263f99fbf96SAlexander V. Chernikov } 2264d3b00c08SAlexander V. Chernikov count = table_get_count(ch, tc); 2265d3b00c08SAlexander V. Chernikov sz = count * sizeof(ipfw_table_xentry) + sizeof(ipfw_xtable); 2266f99fbf96SAlexander V. Chernikov 2267d3b00c08SAlexander V. Chernikov xtbl->cnt = count; 2268f99fbf96SAlexander V. Chernikov xtbl->size = sz; 226974b22066SAlexander V. Chernikov xtbl->type = tc->no.subtype; 2270f99fbf96SAlexander V. Chernikov xtbl->tbl = ti.uidx; 2271f99fbf96SAlexander V. Chernikov 2272f99fbf96SAlexander V. Chernikov if (sd->valsize < sz) { 2273f99fbf96SAlexander V. Chernikov 2274f99fbf96SAlexander V. Chernikov /* 2275f99fbf96SAlexander V. Chernikov * Submitted buffer size is not enough. 2276f99fbf96SAlexander V. Chernikov * WE've already filled in @i structure with 2277f99fbf96SAlexander V. Chernikov * relevant table info including size, so we 2278f99fbf96SAlexander V. Chernikov * can return. Buffer will be flushed automatically. 2279f99fbf96SAlexander V. Chernikov */ 2280f99fbf96SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 2281f99fbf96SAlexander V. Chernikov return (ENOMEM); 2282f99fbf96SAlexander V. Chernikov } 2283f99fbf96SAlexander V. Chernikov 2284f99fbf96SAlexander V. Chernikov /* Do the actual dump in eXtended format */ 2285f99fbf96SAlexander V. Chernikov memset(&da, 0, sizeof(da)); 22860cba2b28SAlexander V. Chernikov da.ch = ch; 2287f99fbf96SAlexander V. Chernikov da.ti = KIDX_TO_TI(ch, tc->no.kidx); 2288f99fbf96SAlexander V. Chernikov da.tc = tc; 2289f99fbf96SAlexander V. Chernikov da.sd = sd; 2290f99fbf96SAlexander V. Chernikov 2291f99fbf96SAlexander V. Chernikov ta = tc->ta; 2292f99fbf96SAlexander V. Chernikov 2293f99fbf96SAlexander V. Chernikov ta->foreach(tc->astate, da.ti, dump_table_xentry, &da); 2294f99fbf96SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 2295f99fbf96SAlexander V. Chernikov 2296f99fbf96SAlexander V. Chernikov return (0); 2297f99fbf96SAlexander V. Chernikov } 2298f99fbf96SAlexander V. Chernikov 229981d3153dSAlexander V. Chernikov /* 2300e822d936SAlexander V. Chernikov * Legacy function to retrieve number of items in table. 2301e822d936SAlexander V. Chernikov */ 23026b988f3aSAlexander V. Chernikov static int 23036b988f3aSAlexander V. Chernikov get_table_size(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 2304e822d936SAlexander V. Chernikov struct sockopt_data *sd) 2305e822d936SAlexander V. Chernikov { 2306e822d936SAlexander V. Chernikov uint32_t *tbl; 2307e822d936SAlexander V. Chernikov struct tid_info ti; 2308e822d936SAlexander V. Chernikov size_t sz; 2309e822d936SAlexander V. Chernikov int error; 2310e822d936SAlexander V. Chernikov 2311e822d936SAlexander V. Chernikov sz = sizeof(*op3) + sizeof(uint32_t); 2312e822d936SAlexander V. Chernikov op3 = (ip_fw3_opheader *)ipfw_get_sopt_header(sd, sz); 2313e822d936SAlexander V. Chernikov if (op3 == NULL) 2314e822d936SAlexander V. Chernikov return (EINVAL); 2315e822d936SAlexander V. Chernikov 2316e822d936SAlexander V. Chernikov tbl = (uint32_t *)(op3 + 1); 2317e822d936SAlexander V. Chernikov memset(&ti, 0, sizeof(ti)); 2318e822d936SAlexander V. Chernikov ti.uidx = *tbl; 2319e822d936SAlexander V. Chernikov IPFW_UH_RLOCK(ch); 2320e822d936SAlexander V. Chernikov error = ipfw_count_xtable(ch, &ti, tbl); 2321e822d936SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 2322e822d936SAlexander V. Chernikov return (error); 2323e822d936SAlexander V. Chernikov } 2324e822d936SAlexander V. Chernikov 2325e822d936SAlexander V. Chernikov /* 232681d3153dSAlexander V. Chernikov * Legacy IP_FW_TABLE_GETSIZE handler 232781d3153dSAlexander V. Chernikov */ 23283b3a8eb9SGleb Smirnoff int 2329b074b7bbSAlexander V. Chernikov ipfw_count_table(struct ip_fw_chain *ch, struct tid_info *ti, uint32_t *cnt) 23303b3a8eb9SGleb Smirnoff { 2331b074b7bbSAlexander V. Chernikov struct table_config *tc; 23323b3a8eb9SGleb Smirnoff 2333b074b7bbSAlexander V. Chernikov if ((tc = find_table(CHAIN_TO_NI(ch), ti)) == NULL) 2334b074b7bbSAlexander V. Chernikov return (ESRCH); 2335d3b00c08SAlexander V. Chernikov *cnt = table_get_count(ch, tc); 23363b3a8eb9SGleb Smirnoff return (0); 23373b3a8eb9SGleb Smirnoff } 23383b3a8eb9SGleb Smirnoff 233981d3153dSAlexander V. Chernikov /* 234081d3153dSAlexander V. Chernikov * Legacy IP_FW_TABLE_XGETSIZE handler 234181d3153dSAlexander V. Chernikov */ 23429f7d47b0SAlexander V. Chernikov int 23439f7d47b0SAlexander V. Chernikov ipfw_count_xtable(struct ip_fw_chain *ch, struct tid_info *ti, uint32_t *cnt) 23443b3a8eb9SGleb Smirnoff { 23459f7d47b0SAlexander V. Chernikov struct table_config *tc; 2346d3b00c08SAlexander V. Chernikov uint32_t count; 23479f7d47b0SAlexander V. Chernikov 2348d3a4f924SAlexander V. Chernikov if ((tc = find_table(CHAIN_TO_NI(ch), ti)) == NULL) { 2349d3a4f924SAlexander V. Chernikov *cnt = 0; 23509f7d47b0SAlexander V. Chernikov return (0); /* 'table all list' requires success */ 2351d3a4f924SAlexander V. Chernikov } 2352d3b00c08SAlexander V. Chernikov 2353d3b00c08SAlexander V. Chernikov count = table_get_count(ch, tc); 2354d3b00c08SAlexander V. Chernikov *cnt = count * sizeof(ipfw_table_xentry); 2355d3b00c08SAlexander V. Chernikov if (count > 0) 23569f7d47b0SAlexander V. Chernikov *cnt += sizeof(ipfw_xtable); 23579f7d47b0SAlexander V. Chernikov return (0); 23589f7d47b0SAlexander V. Chernikov } 23599f7d47b0SAlexander V. Chernikov 23609f7d47b0SAlexander V. Chernikov static int 23619f7d47b0SAlexander V. Chernikov dump_table_entry(void *e, void *arg) 23629f7d47b0SAlexander V. Chernikov { 23639f7d47b0SAlexander V. Chernikov struct dump_args *da; 23649f7d47b0SAlexander V. Chernikov struct table_config *tc; 23659f7d47b0SAlexander V. Chernikov struct table_algo *ta; 23663b3a8eb9SGleb Smirnoff ipfw_table_entry *ent; 23670cba2b28SAlexander V. Chernikov struct table_value *pval; 236881d3153dSAlexander V. Chernikov int error; 23693b3a8eb9SGleb Smirnoff 23709f7d47b0SAlexander V. Chernikov da = (struct dump_args *)arg; 23719f7d47b0SAlexander V. Chernikov 23729f7d47b0SAlexander V. Chernikov tc = da->tc; 23739f7d47b0SAlexander V. Chernikov ta = tc->ta; 23749f7d47b0SAlexander V. Chernikov 23759f7d47b0SAlexander V. Chernikov /* Out of memory, returning */ 2376f1220db8SAlexander V. Chernikov if (da->cnt == da->size) 23773b3a8eb9SGleb Smirnoff return (1); 2378f1220db8SAlexander V. Chernikov ent = da->ent++; 2379f1220db8SAlexander V. Chernikov ent->tbl = da->uidx; 2380f1220db8SAlexander V. Chernikov da->cnt++; 23819f7d47b0SAlexander V. Chernikov 238281d3153dSAlexander V. Chernikov error = ta->dump_tentry(tc->astate, da->ti, e, &da->tent); 238381d3153dSAlexander V. Chernikov if (error != 0) 238481d3153dSAlexander V. Chernikov return (error); 238581d3153dSAlexander V. Chernikov 238681d3153dSAlexander V. Chernikov ent->addr = da->tent.k.addr.s_addr; 238781d3153dSAlexander V. Chernikov ent->masklen = da->tent.masklen; 23880cba2b28SAlexander V. Chernikov pval = get_table_value(da->ch, da->tc, da->tent.v.kidx); 23890cba2b28SAlexander V. Chernikov ent->value = ipfw_export_table_value_legacy(pval); 239081d3153dSAlexander V. Chernikov 239181d3153dSAlexander V. Chernikov return (0); 23923b3a8eb9SGleb Smirnoff } 23933b3a8eb9SGleb Smirnoff 2394f1220db8SAlexander V. Chernikov /* 2395f1220db8SAlexander V. Chernikov * Dumps table in pre-8.1 legacy format. 2396f1220db8SAlexander V. Chernikov */ 23973b3a8eb9SGleb Smirnoff int 2398f1220db8SAlexander V. Chernikov ipfw_dump_table_legacy(struct ip_fw_chain *ch, struct tid_info *ti, 2399f1220db8SAlexander V. Chernikov ipfw_table *tbl) 24003b3a8eb9SGleb Smirnoff { 2401b074b7bbSAlexander V. Chernikov struct table_config *tc; 24029f7d47b0SAlexander V. Chernikov struct table_algo *ta; 24039f7d47b0SAlexander V. Chernikov struct dump_args da; 24043b3a8eb9SGleb Smirnoff 24053b3a8eb9SGleb Smirnoff tbl->cnt = 0; 24063b3a8eb9SGleb Smirnoff 2407b074b7bbSAlexander V. Chernikov if ((tc = find_table(CHAIN_TO_NI(ch), ti)) == NULL) 2408b074b7bbSAlexander V. Chernikov return (0); /* XXX: We should return ESRCH */ 24099f7d47b0SAlexander V. Chernikov 24109f7d47b0SAlexander V. Chernikov ta = tc->ta; 24119f7d47b0SAlexander V. Chernikov 241281d3153dSAlexander V. Chernikov /* This dump format supports IPv4 only */ 241374b22066SAlexander V. Chernikov if (tc->no.subtype != IPFW_TABLE_ADDR) 241481d3153dSAlexander V. Chernikov return (0); 24159f7d47b0SAlexander V. Chernikov 2416d3a4f924SAlexander V. Chernikov memset(&da, 0, sizeof(da)); 24170cba2b28SAlexander V. Chernikov da.ch = ch; 24189f7d47b0SAlexander V. Chernikov da.ti = KIDX_TO_TI(ch, tc->no.kidx); 24199f7d47b0SAlexander V. Chernikov da.tc = tc; 2420f1220db8SAlexander V. Chernikov da.ent = &tbl->ent[0]; 2421f1220db8SAlexander V. Chernikov da.size = tbl->size; 24229f7d47b0SAlexander V. Chernikov 24239f7d47b0SAlexander V. Chernikov tbl->cnt = 0; 24249f7d47b0SAlexander V. Chernikov ta->foreach(tc->astate, da.ti, dump_table_entry, &da); 2425f1220db8SAlexander V. Chernikov tbl->cnt = da.cnt; 24269f7d47b0SAlexander V. Chernikov 24273b3a8eb9SGleb Smirnoff return (0); 24283b3a8eb9SGleb Smirnoff } 24293b3a8eb9SGleb Smirnoff 24309490a627SAlexander V. Chernikov /* 243181d3153dSAlexander V. Chernikov * Dumps table entry in eXtended format (v1)(current). 243281d3153dSAlexander V. Chernikov */ 243381d3153dSAlexander V. Chernikov static int 243481d3153dSAlexander V. Chernikov dump_table_tentry(void *e, void *arg) 243581d3153dSAlexander V. Chernikov { 243681d3153dSAlexander V. Chernikov struct dump_args *da; 243781d3153dSAlexander V. Chernikov struct table_config *tc; 243881d3153dSAlexander V. Chernikov struct table_algo *ta; 24390cba2b28SAlexander V. Chernikov struct table_value *pval; 244081d3153dSAlexander V. Chernikov ipfw_obj_tentry *tent; 24410cba2b28SAlexander V. Chernikov int error; 244281d3153dSAlexander V. Chernikov 244381d3153dSAlexander V. Chernikov da = (struct dump_args *)arg; 244481d3153dSAlexander V. Chernikov 244581d3153dSAlexander V. Chernikov tc = da->tc; 244681d3153dSAlexander V. Chernikov ta = tc->ta; 244781d3153dSAlexander V. Chernikov 244881d3153dSAlexander V. Chernikov tent = (ipfw_obj_tentry *)ipfw_get_sopt_space(da->sd, sizeof(*tent)); 244981d3153dSAlexander V. Chernikov /* Out of memory, returning */ 245081d3153dSAlexander V. Chernikov if (tent == NULL) { 245181d3153dSAlexander V. Chernikov da->error = ENOMEM; 245281d3153dSAlexander V. Chernikov return (1); 245381d3153dSAlexander V. Chernikov } 245481d3153dSAlexander V. Chernikov tent->head.length = sizeof(ipfw_obj_tentry); 245581d3153dSAlexander V. Chernikov tent->idx = da->uidx; 245681d3153dSAlexander V. Chernikov 24570cba2b28SAlexander V. Chernikov error = ta->dump_tentry(tc->astate, da->ti, e, tent); 24580cba2b28SAlexander V. Chernikov if (error != 0) 24590cba2b28SAlexander V. Chernikov return (error); 24600cba2b28SAlexander V. Chernikov 24610cba2b28SAlexander V. Chernikov pval = get_table_value(da->ch, da->tc, tent->v.kidx); 24620cba2b28SAlexander V. Chernikov ipfw_export_table_value_v1(pval, &tent->v.value); 24630cba2b28SAlexander V. Chernikov 24640cba2b28SAlexander V. Chernikov return (0); 246581d3153dSAlexander V. Chernikov } 246681d3153dSAlexander V. Chernikov 246781d3153dSAlexander V. Chernikov /* 246881d3153dSAlexander V. Chernikov * Dumps table entry in eXtended format (v0). 24699490a627SAlexander V. Chernikov */ 24703b3a8eb9SGleb Smirnoff static int 24719f7d47b0SAlexander V. Chernikov dump_table_xentry(void *e, void *arg) 24723b3a8eb9SGleb Smirnoff { 24739f7d47b0SAlexander V. Chernikov struct dump_args *da; 24749f7d47b0SAlexander V. Chernikov struct table_config *tc; 24759f7d47b0SAlexander V. Chernikov struct table_algo *ta; 24763b3a8eb9SGleb Smirnoff ipfw_table_xentry *xent; 247781d3153dSAlexander V. Chernikov ipfw_obj_tentry *tent; 24780cba2b28SAlexander V. Chernikov struct table_value *pval; 247981d3153dSAlexander V. Chernikov int error; 24803b3a8eb9SGleb Smirnoff 24819f7d47b0SAlexander V. Chernikov da = (struct dump_args *)arg; 24829f7d47b0SAlexander V. Chernikov 24839f7d47b0SAlexander V. Chernikov tc = da->tc; 24849f7d47b0SAlexander V. Chernikov ta = tc->ta; 24859f7d47b0SAlexander V. Chernikov 24862d99a349SAlexander V. Chernikov xent = (ipfw_table_xentry *)ipfw_get_sopt_space(da->sd, sizeof(*xent)); 24873b3a8eb9SGleb Smirnoff /* Out of memory, returning */ 24882d99a349SAlexander V. Chernikov if (xent == NULL) 24893b3a8eb9SGleb Smirnoff return (1); 24903b3a8eb9SGleb Smirnoff xent->len = sizeof(ipfw_table_xentry); 2491f1220db8SAlexander V. Chernikov xent->tbl = da->uidx; 24929f7d47b0SAlexander V. Chernikov 249381d3153dSAlexander V. Chernikov memset(&da->tent, 0, sizeof(da->tent)); 249481d3153dSAlexander V. Chernikov tent = &da->tent; 249581d3153dSAlexander V. Chernikov error = ta->dump_tentry(tc->astate, da->ti, e, tent); 249681d3153dSAlexander V. Chernikov if (error != 0) 249781d3153dSAlexander V. Chernikov return (error); 249881d3153dSAlexander V. Chernikov 249981d3153dSAlexander V. Chernikov /* Convert current format to previous one */ 250081d3153dSAlexander V. Chernikov xent->masklen = tent->masklen; 25010cba2b28SAlexander V. Chernikov pval = get_table_value(da->ch, da->tc, da->tent.v.kidx); 25020cba2b28SAlexander V. Chernikov xent->value = ipfw_export_table_value_legacy(pval); 250381d3153dSAlexander V. Chernikov /* Apply some hacks */ 250474b22066SAlexander V. Chernikov if (tc->no.subtype == IPFW_TABLE_ADDR && tent->subtype == AF_INET) { 250581d3153dSAlexander V. Chernikov xent->k.addr6.s6_addr32[3] = tent->k.addr.s_addr; 250681d3153dSAlexander V. Chernikov xent->flags = IPFW_TCF_INET; 250781d3153dSAlexander V. Chernikov } else 250881d3153dSAlexander V. Chernikov memcpy(&xent->k, &tent->k, sizeof(xent->k)); 250981d3153dSAlexander V. Chernikov 251081d3153dSAlexander V. Chernikov return (0); 25119f7d47b0SAlexander V. Chernikov } 25129f7d47b0SAlexander V. Chernikov 25139f7d47b0SAlexander V. Chernikov /* 25144dff4ae0SAlexander V. Chernikov * Helper function to export table algo data 25154dff4ae0SAlexander V. Chernikov * to tentry format before calling user function. 25164dff4ae0SAlexander V. Chernikov * 25174dff4ae0SAlexander V. Chernikov * Returns 0 on success. 25184dff4ae0SAlexander V. Chernikov */ 25194dff4ae0SAlexander V. Chernikov static int 25204dff4ae0SAlexander V. Chernikov prepare_table_tentry(void *e, void *arg) 25214dff4ae0SAlexander V. Chernikov { 25224dff4ae0SAlexander V. Chernikov struct dump_args *da; 25234dff4ae0SAlexander V. Chernikov struct table_config *tc; 25244dff4ae0SAlexander V. Chernikov struct table_algo *ta; 25254dff4ae0SAlexander V. Chernikov int error; 25264dff4ae0SAlexander V. Chernikov 25274dff4ae0SAlexander V. Chernikov da = (struct dump_args *)arg; 25284dff4ae0SAlexander V. Chernikov 25294dff4ae0SAlexander V. Chernikov tc = da->tc; 25304dff4ae0SAlexander V. Chernikov ta = tc->ta; 25314dff4ae0SAlexander V. Chernikov 25324dff4ae0SAlexander V. Chernikov error = ta->dump_tentry(tc->astate, da->ti, e, &da->tent); 25334dff4ae0SAlexander V. Chernikov if (error != 0) 25344dff4ae0SAlexander V. Chernikov return (error); 25354dff4ae0SAlexander V. Chernikov 25364dff4ae0SAlexander V. Chernikov da->f(&da->tent, da->farg); 25374dff4ae0SAlexander V. Chernikov 25384dff4ae0SAlexander V. Chernikov return (0); 25394dff4ae0SAlexander V. Chernikov } 25404dff4ae0SAlexander V. Chernikov 25414dff4ae0SAlexander V. Chernikov /* 25424dff4ae0SAlexander V. Chernikov * Allow external consumers to read table entries in standard format. 25434dff4ae0SAlexander V. Chernikov */ 25444dff4ae0SAlexander V. Chernikov int 25454dff4ae0SAlexander V. Chernikov ipfw_foreach_table_tentry(struct ip_fw_chain *ch, uint16_t kidx, 25464dff4ae0SAlexander V. Chernikov ta_foreach_f *f, void *arg) 25474dff4ae0SAlexander V. Chernikov { 25484dff4ae0SAlexander V. Chernikov struct namedobj_instance *ni; 25494dff4ae0SAlexander V. Chernikov struct table_config *tc; 25504dff4ae0SAlexander V. Chernikov struct table_algo *ta; 25514dff4ae0SAlexander V. Chernikov struct dump_args da; 25524dff4ae0SAlexander V. Chernikov 25534dff4ae0SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 25544dff4ae0SAlexander V. Chernikov 25554dff4ae0SAlexander V. Chernikov tc = (struct table_config *)ipfw_objhash_lookup_kidx(ni, kidx); 25564dff4ae0SAlexander V. Chernikov if (tc == NULL) 25574dff4ae0SAlexander V. Chernikov return (ESRCH); 25584dff4ae0SAlexander V. Chernikov 25594dff4ae0SAlexander V. Chernikov ta = tc->ta; 25604dff4ae0SAlexander V. Chernikov 25614dff4ae0SAlexander V. Chernikov memset(&da, 0, sizeof(da)); 25620cba2b28SAlexander V. Chernikov da.ch = ch; 25634dff4ae0SAlexander V. Chernikov da.ti = KIDX_TO_TI(ch, tc->no.kidx); 25644dff4ae0SAlexander V. Chernikov da.tc = tc; 25654dff4ae0SAlexander V. Chernikov da.f = f; 25664dff4ae0SAlexander V. Chernikov da.farg = arg; 25674dff4ae0SAlexander V. Chernikov 25684dff4ae0SAlexander V. Chernikov ta->foreach(tc->astate, da.ti, prepare_table_tentry, &da); 25694dff4ae0SAlexander V. Chernikov 25704dff4ae0SAlexander V. Chernikov return (0); 25714dff4ae0SAlexander V. Chernikov } 25724dff4ae0SAlexander V. Chernikov 25734dff4ae0SAlexander V. Chernikov /* 25749f7d47b0SAlexander V. Chernikov * Table algorithms 25759f7d47b0SAlexander V. Chernikov */ 25763b3a8eb9SGleb Smirnoff 25779f7d47b0SAlexander V. Chernikov /* 2578a4641f4eSPedro F. Giffuni * Finds algorithm by index, table type or supplied name. 257935e1bbd0SAlexander V. Chernikov * 258035e1bbd0SAlexander V. Chernikov * Returns pointer to algo or NULL. 25819f7d47b0SAlexander V. Chernikov */ 25829f7d47b0SAlexander V. Chernikov static struct table_algo * 25839490a627SAlexander V. Chernikov find_table_algo(struct tables_config *tcfg, struct tid_info *ti, char *name) 25849f7d47b0SAlexander V. Chernikov { 25859490a627SAlexander V. Chernikov int i, l; 25869490a627SAlexander V. Chernikov struct table_algo *ta; 25879f7d47b0SAlexander V. Chernikov 258857a1cf95SAlexander V. Chernikov if (ti->type > IPFW_TABLE_MAXTYPE) 258957a1cf95SAlexander V. Chernikov return (NULL); 259057a1cf95SAlexander V. Chernikov 25919f7d47b0SAlexander V. Chernikov /* Search by index */ 25929f7d47b0SAlexander V. Chernikov if (ti->atype != 0) { 25939f7d47b0SAlexander V. Chernikov if (ti->atype > tcfg->algo_count) 25949f7d47b0SAlexander V. Chernikov return (NULL); 25959f7d47b0SAlexander V. Chernikov return (tcfg->algo[ti->atype]); 25969f7d47b0SAlexander V. Chernikov } 25979f7d47b0SAlexander V. Chernikov 2598fd0869d5SAlexander V. Chernikov if (name == NULL) { 2599fd0869d5SAlexander V. Chernikov /* Return default algorithm for given type if set */ 2600fd0869d5SAlexander V. Chernikov return (tcfg->def_algo[ti->type]); 2601fd0869d5SAlexander V. Chernikov } 2602fd0869d5SAlexander V. Chernikov 2603fd0869d5SAlexander V. Chernikov /* Search by name */ 26049490a627SAlexander V. Chernikov /* TODO: better search */ 26059490a627SAlexander V. Chernikov for (i = 1; i <= tcfg->algo_count; i++) { 26069490a627SAlexander V. Chernikov ta = tcfg->algo[i]; 26079490a627SAlexander V. Chernikov 26089490a627SAlexander V. Chernikov /* 26099490a627SAlexander V. Chernikov * One can supply additional algorithm 26109490a627SAlexander V. Chernikov * parameters so we compare only the first word 26119490a627SAlexander V. Chernikov * of supplied name: 2612c21034b7SAlexander V. Chernikov * 'addr:chash hsize=32' 26139490a627SAlexander V. Chernikov * '^^^^^^^^^' 26149490a627SAlexander V. Chernikov * 26159490a627SAlexander V. Chernikov */ 26169490a627SAlexander V. Chernikov l = strlen(ta->name); 2617fd0869d5SAlexander V. Chernikov if (strncmp(name, ta->name, l) != 0) 2618fd0869d5SAlexander V. Chernikov continue; 2619fd0869d5SAlexander V. Chernikov if (name[l] != '\0' && name[l] != ' ') 2620fd0869d5SAlexander V. Chernikov continue; 2621fd0869d5SAlexander V. Chernikov /* Check if we're requesting proper table type */ 2622fd0869d5SAlexander V. Chernikov if (ti->type != 0 && ti->type != ta->type) 2623fd0869d5SAlexander V. Chernikov return (NULL); 26249490a627SAlexander V. Chernikov return (ta); 26259490a627SAlexander V. Chernikov } 26269490a627SAlexander V. Chernikov 26279490a627SAlexander V. Chernikov return (NULL); 26289490a627SAlexander V. Chernikov } 26299490a627SAlexander V. Chernikov 2630b6ee846eSAlexander V. Chernikov /* 2631b6ee846eSAlexander V. Chernikov * Register new table algo @ta. 263235e1bbd0SAlexander V. Chernikov * Stores algo id inside @idx. 2633b6ee846eSAlexander V. Chernikov * 2634b6ee846eSAlexander V. Chernikov * Returns 0 on success. 2635b6ee846eSAlexander V. Chernikov */ 26360b565ac0SAlexander V. Chernikov int 26370b565ac0SAlexander V. Chernikov ipfw_add_table_algo(struct ip_fw_chain *ch, struct table_algo *ta, size_t size, 26380b565ac0SAlexander V. Chernikov int *idx) 26393b3a8eb9SGleb Smirnoff { 26409f7d47b0SAlexander V. Chernikov struct tables_config *tcfg; 26410b565ac0SAlexander V. Chernikov struct table_algo *ta_new; 2642b6ee846eSAlexander V. Chernikov size_t sz; 26430b565ac0SAlexander V. Chernikov 26440b565ac0SAlexander V. Chernikov if (size > sizeof(struct table_algo)) 26450b565ac0SAlexander V. Chernikov return (EINVAL); 26460b565ac0SAlexander V. Chernikov 2647b6ee846eSAlexander V. Chernikov /* Check for the required on-stack size for add/del */ 2648b6ee846eSAlexander V. Chernikov sz = roundup2(ta->ta_buf_size, sizeof(void *)); 2649b6ee846eSAlexander V. Chernikov if (sz > TA_BUF_SZ) 2650b6ee846eSAlexander V. Chernikov return (EINVAL); 2651b6ee846eSAlexander V. Chernikov 2652fddbbf75SAlexander V. Chernikov KASSERT(ta->type <= IPFW_TABLE_MAXTYPE,("Increase IPFW_TABLE_MAXTYPE")); 265357a1cf95SAlexander V. Chernikov 265435e1bbd0SAlexander V. Chernikov /* Copy algorithm data to stable storage. */ 26550b565ac0SAlexander V. Chernikov ta_new = malloc(sizeof(struct table_algo), M_IPFW, M_WAITOK | M_ZERO); 26560b565ac0SAlexander V. Chernikov memcpy(ta_new, ta, size); 26573b3a8eb9SGleb Smirnoff 26589f7d47b0SAlexander V. Chernikov tcfg = CHAIN_TO_TCFG(ch); 2659b074b7bbSAlexander V. Chernikov 26609f7d47b0SAlexander V. Chernikov KASSERT(tcfg->algo_count < 255, ("Increase algo array size")); 26619f7d47b0SAlexander V. Chernikov 26620b565ac0SAlexander V. Chernikov tcfg->algo[++tcfg->algo_count] = ta_new; 26630b565ac0SAlexander V. Chernikov ta_new->idx = tcfg->algo_count; 26640b565ac0SAlexander V. Chernikov 266557a1cf95SAlexander V. Chernikov /* Set algorithm as default one for given type */ 266657a1cf95SAlexander V. Chernikov if ((ta_new->flags & TA_FLAG_DEFAULT) != 0 && 266757a1cf95SAlexander V. Chernikov tcfg->def_algo[ta_new->type] == NULL) 266857a1cf95SAlexander V. Chernikov tcfg->def_algo[ta_new->type] = ta_new; 266957a1cf95SAlexander V. Chernikov 26700b565ac0SAlexander V. Chernikov *idx = ta_new->idx; 26710b565ac0SAlexander V. Chernikov 26720b565ac0SAlexander V. Chernikov return (0); 26730b565ac0SAlexander V. Chernikov } 26740b565ac0SAlexander V. Chernikov 2675b6ee846eSAlexander V. Chernikov /* 2676b6ee846eSAlexander V. Chernikov * Unregisters table algo using @idx as id. 2677c8d5d308SAlexander V. Chernikov * XXX: It is NOT safe to call this function in any place 2678c8d5d308SAlexander V. Chernikov * other than ipfw instance destroy handler. 2679b6ee846eSAlexander V. Chernikov */ 26800b565ac0SAlexander V. Chernikov void 26810b565ac0SAlexander V. Chernikov ipfw_del_table_algo(struct ip_fw_chain *ch, int idx) 26820b565ac0SAlexander V. Chernikov { 26830b565ac0SAlexander V. Chernikov struct tables_config *tcfg; 26840b565ac0SAlexander V. Chernikov struct table_algo *ta; 26850b565ac0SAlexander V. Chernikov 26860b565ac0SAlexander V. Chernikov tcfg = CHAIN_TO_TCFG(ch); 26870b565ac0SAlexander V. Chernikov 2688b6ee846eSAlexander V. Chernikov KASSERT(idx <= tcfg->algo_count, ("algo idx %d out of range 1..%d", 2689b6ee846eSAlexander V. Chernikov idx, tcfg->algo_count)); 26900b565ac0SAlexander V. Chernikov 26910b565ac0SAlexander V. Chernikov ta = tcfg->algo[idx]; 26920b565ac0SAlexander V. Chernikov KASSERT(ta != NULL, ("algo idx %d is NULL", idx)); 269357a1cf95SAlexander V. Chernikov 269457a1cf95SAlexander V. Chernikov if (tcfg->def_algo[ta->type] == ta) 269557a1cf95SAlexander V. Chernikov tcfg->def_algo[ta->type] = NULL; 269657a1cf95SAlexander V. Chernikov 26970b565ac0SAlexander V. Chernikov free(ta, M_IPFW); 26983b3a8eb9SGleb Smirnoff } 26993b3a8eb9SGleb Smirnoff 27009d099b4fSAlexander V. Chernikov /* 27019d099b4fSAlexander V. Chernikov * Lists all table algorithms currently available. 27029d099b4fSAlexander V. Chernikov * Data layout (v0)(current): 27039d099b4fSAlexander V. Chernikov * Request: [ ipfw_obj_lheader ], size = ipfw_obj_lheader.size 27049d099b4fSAlexander V. Chernikov * Reply: [ ipfw_obj_lheader ipfw_ta_info x N ] 27059d099b4fSAlexander V. Chernikov * 27069d099b4fSAlexander V. Chernikov * Returns 0 on success 27079d099b4fSAlexander V. Chernikov */ 27086b988f3aSAlexander V. Chernikov static int 27096b988f3aSAlexander V. Chernikov list_table_algo(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 2710e822d936SAlexander V. Chernikov struct sockopt_data *sd) 27119d099b4fSAlexander V. Chernikov { 27129d099b4fSAlexander V. Chernikov struct _ipfw_obj_lheader *olh; 27139d099b4fSAlexander V. Chernikov struct tables_config *tcfg; 27149d099b4fSAlexander V. Chernikov ipfw_ta_info *i; 27159d099b4fSAlexander V. Chernikov struct table_algo *ta; 27169d099b4fSAlexander V. Chernikov uint32_t count, n, size; 27179d099b4fSAlexander V. Chernikov 27189d099b4fSAlexander V. Chernikov olh = (struct _ipfw_obj_lheader *)ipfw_get_sopt_header(sd,sizeof(*olh)); 27199d099b4fSAlexander V. Chernikov if (olh == NULL) 27209d099b4fSAlexander V. Chernikov return (EINVAL); 27219d099b4fSAlexander V. Chernikov if (sd->valsize < olh->size) 27229d099b4fSAlexander V. Chernikov return (EINVAL); 27239d099b4fSAlexander V. Chernikov 27249d099b4fSAlexander V. Chernikov IPFW_UH_RLOCK(ch); 27259d099b4fSAlexander V. Chernikov tcfg = CHAIN_TO_TCFG(ch); 27269d099b4fSAlexander V. Chernikov count = tcfg->algo_count; 27279d099b4fSAlexander V. Chernikov size = count * sizeof(ipfw_ta_info) + sizeof(ipfw_obj_lheader); 27289d099b4fSAlexander V. Chernikov 27299d099b4fSAlexander V. Chernikov /* Fill in header regadless of buffer size */ 27309d099b4fSAlexander V. Chernikov olh->count = count; 27319d099b4fSAlexander V. Chernikov olh->objsize = sizeof(ipfw_ta_info); 27329d099b4fSAlexander V. Chernikov 27339d099b4fSAlexander V. Chernikov if (size > olh->size) { 27349d099b4fSAlexander V. Chernikov olh->size = size; 27359d099b4fSAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 27369d099b4fSAlexander V. Chernikov return (ENOMEM); 27379d099b4fSAlexander V. Chernikov } 27389d099b4fSAlexander V. Chernikov olh->size = size; 27399d099b4fSAlexander V. Chernikov 27409d099b4fSAlexander V. Chernikov for (n = 1; n <= count; n++) { 27419d099b4fSAlexander V. Chernikov i = (ipfw_ta_info *)ipfw_get_sopt_space(sd, sizeof(*i)); 27427a6ab8f1SPedro F. Giffuni KASSERT(i != NULL, ("previously checked buffer is not enough")); 27439d099b4fSAlexander V. Chernikov ta = tcfg->algo[n]; 27449d099b4fSAlexander V. Chernikov strlcpy(i->algoname, ta->name, sizeof(i->algoname)); 27459d099b4fSAlexander V. Chernikov i->type = ta->type; 27469d099b4fSAlexander V. Chernikov i->refcnt = ta->refcnt; 27479d099b4fSAlexander V. Chernikov } 27489d099b4fSAlexander V. Chernikov 27499d099b4fSAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 27509d099b4fSAlexander V. Chernikov 27519d099b4fSAlexander V. Chernikov return (0); 27529d099b4fSAlexander V. Chernikov } 27539d099b4fSAlexander V. Chernikov 2754b074b7bbSAlexander V. Chernikov static int 275574b22066SAlexander V. Chernikov classify_srcdst(ipfw_insn *cmd, uint16_t *puidx, uint8_t *ptype) 2756b074b7bbSAlexander V. Chernikov { 2757b074b7bbSAlexander V. Chernikov /* Basic IPv4/IPv6 or u32 lookups */ 2758b074b7bbSAlexander V. Chernikov *puidx = cmd->arg1; 2759c21034b7SAlexander V. Chernikov /* Assume ADDR by default */ 2760c21034b7SAlexander V. Chernikov *ptype = IPFW_TABLE_ADDR; 276174b22066SAlexander V. Chernikov int v; 2762b074b7bbSAlexander V. Chernikov 2763b074b7bbSAlexander V. Chernikov if (F_LEN(cmd) > F_INSN_SIZE(ipfw_insn_u32)) { 2764b074b7bbSAlexander V. Chernikov /* 2765b074b7bbSAlexander V. Chernikov * generic lookup. The key must be 2766b074b7bbSAlexander V. Chernikov * in 32bit big-endian format. 2767b074b7bbSAlexander V. Chernikov */ 2768b074b7bbSAlexander V. Chernikov v = ((ipfw_insn_u32 *)cmd)->d[1]; 2769b074b7bbSAlexander V. Chernikov switch (v) { 2770b074b7bbSAlexander V. Chernikov case 0: 2771b074b7bbSAlexander V. Chernikov case 1: 2772b074b7bbSAlexander V. Chernikov /* IPv4 src/dst */ 2773b074b7bbSAlexander V. Chernikov break; 2774b074b7bbSAlexander V. Chernikov case 2: 2775b074b7bbSAlexander V. Chernikov case 3: 2776b074b7bbSAlexander V. Chernikov /* src/dst port */ 2777b23d5de9SAlexander V. Chernikov *ptype = IPFW_TABLE_NUMBER; 2778b074b7bbSAlexander V. Chernikov break; 2779b074b7bbSAlexander V. Chernikov case 4: 2780b074b7bbSAlexander V. Chernikov /* uid/gid */ 2781b23d5de9SAlexander V. Chernikov *ptype = IPFW_TABLE_NUMBER; 2782b23d5de9SAlexander V. Chernikov break; 2783b074b7bbSAlexander V. Chernikov case 5: 2784b074b7bbSAlexander V. Chernikov /* jid */ 2785b23d5de9SAlexander V. Chernikov *ptype = IPFW_TABLE_NUMBER; 2786b23d5de9SAlexander V. Chernikov break; 2787b074b7bbSAlexander V. Chernikov case 6: 2788b074b7bbSAlexander V. Chernikov /* dscp */ 2789b23d5de9SAlexander V. Chernikov *ptype = IPFW_TABLE_NUMBER; 2790b074b7bbSAlexander V. Chernikov break; 2791b074b7bbSAlexander V. Chernikov } 2792b074b7bbSAlexander V. Chernikov } 2793b074b7bbSAlexander V. Chernikov 279474b22066SAlexander V. Chernikov return (0); 2795b074b7bbSAlexander V. Chernikov } 2796b074b7bbSAlexander V. Chernikov 279774b22066SAlexander V. Chernikov static int 279874b22066SAlexander V. Chernikov classify_via(ipfw_insn *cmd, uint16_t *puidx, uint8_t *ptype) 2799b074b7bbSAlexander V. Chernikov { 2800b074b7bbSAlexander V. Chernikov ipfw_insn_if *cmdif; 2801b074b7bbSAlexander V. Chernikov 2802b074b7bbSAlexander V. Chernikov /* Interface table, possibly */ 2803b074b7bbSAlexander V. Chernikov cmdif = (ipfw_insn_if *)cmd; 280474b22066SAlexander V. Chernikov if (cmdif->name[0] != '\1') 280574b22066SAlexander V. Chernikov return (1); 280674b22066SAlexander V. Chernikov 280774b22066SAlexander V. Chernikov *ptype = IPFW_TABLE_INTERFACE; 280874b22066SAlexander V. Chernikov *puidx = cmdif->p.kidx; 280974b22066SAlexander V. Chernikov 281074b22066SAlexander V. Chernikov return (0); 281174b22066SAlexander V. Chernikov } 281274b22066SAlexander V. Chernikov 281374b22066SAlexander V. Chernikov static int 281474b22066SAlexander V. Chernikov classify_flow(ipfw_insn *cmd, uint16_t *puidx, uint8_t *ptype) 281574b22066SAlexander V. Chernikov { 281674b22066SAlexander V. Chernikov 281774b22066SAlexander V. Chernikov *puidx = cmd->arg1; 281874b22066SAlexander V. Chernikov *ptype = IPFW_TABLE_FLOW; 281974b22066SAlexander V. Chernikov 282074b22066SAlexander V. Chernikov return (0); 282174b22066SAlexander V. Chernikov } 282274b22066SAlexander V. Chernikov 282374b22066SAlexander V. Chernikov static void 282474b22066SAlexander V. Chernikov update_arg1(ipfw_insn *cmd, uint16_t idx) 282574b22066SAlexander V. Chernikov { 282674b22066SAlexander V. Chernikov 2827914bffb6SAlexander V. Chernikov cmd->arg1 = idx; 2828b074b7bbSAlexander V. Chernikov } 282974b22066SAlexander V. Chernikov 283074b22066SAlexander V. Chernikov static void 283174b22066SAlexander V. Chernikov update_via(ipfw_insn *cmd, uint16_t idx) 283274b22066SAlexander V. Chernikov { 283374b22066SAlexander V. Chernikov ipfw_insn_if *cmdif; 283474b22066SAlexander V. Chernikov 283574b22066SAlexander V. Chernikov cmdif = (ipfw_insn_if *)cmd; 283674b22066SAlexander V. Chernikov cmdif->p.kidx = idx; 2837b074b7bbSAlexander V. Chernikov } 2838b074b7bbSAlexander V. Chernikov 283974b22066SAlexander V. Chernikov static int 284074b22066SAlexander V. Chernikov table_findbyname(struct ip_fw_chain *ch, struct tid_info *ti, 284174b22066SAlexander V. Chernikov struct named_object **pno) 284274b22066SAlexander V. Chernikov { 284374b22066SAlexander V. Chernikov struct table_config *tc; 284474b22066SAlexander V. Chernikov int error; 284574b22066SAlexander V. Chernikov 284674b22066SAlexander V. Chernikov IPFW_UH_WLOCK_ASSERT(ch); 284774b22066SAlexander V. Chernikov 284874b22066SAlexander V. Chernikov error = find_table_err(CHAIN_TO_NI(ch), ti, &tc); 284974b22066SAlexander V. Chernikov if (error != 0) 285074b22066SAlexander V. Chernikov return (error); 285174b22066SAlexander V. Chernikov 285274b22066SAlexander V. Chernikov *pno = &tc->no; 285374b22066SAlexander V. Chernikov return (0); 285474b22066SAlexander V. Chernikov } 285574b22066SAlexander V. Chernikov 285674b22066SAlexander V. Chernikov /* XXX: sets-sets! */ 285774b22066SAlexander V. Chernikov static struct named_object * 285874b22066SAlexander V. Chernikov table_findbykidx(struct ip_fw_chain *ch, uint16_t idx) 285974b22066SAlexander V. Chernikov { 286074b22066SAlexander V. Chernikov struct namedobj_instance *ni; 286174b22066SAlexander V. Chernikov struct table_config *tc; 286274b22066SAlexander V. Chernikov 286374b22066SAlexander V. Chernikov IPFW_UH_WLOCK_ASSERT(ch); 286474b22066SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 286574b22066SAlexander V. Chernikov tc = (struct table_config *)ipfw_objhash_lookup_kidx(ni, idx); 286674b22066SAlexander V. Chernikov KASSERT(tc != NULL, ("Table with index %d not found", idx)); 286774b22066SAlexander V. Chernikov 286874b22066SAlexander V. Chernikov return (&tc->no); 286974b22066SAlexander V. Chernikov } 287074b22066SAlexander V. Chernikov 28712685841bSAndrey V. Elsukov static int 28722685841bSAndrey V. Elsukov table_manage_sets(struct ip_fw_chain *ch, uint16_t set, uint8_t new_set, 28732685841bSAndrey V. Elsukov enum ipfw_sets_cmd cmd) 28742685841bSAndrey V. Elsukov { 28752685841bSAndrey V. Elsukov 28762685841bSAndrey V. Elsukov switch (cmd) { 28772685841bSAndrey V. Elsukov case SWAP_ALL: 28782685841bSAndrey V. Elsukov case TEST_ALL: 28792685841bSAndrey V. Elsukov case MOVE_ALL: 288070c1466dSAndrey V. Elsukov /* 288170c1466dSAndrey V. Elsukov * Always return success, the real action and decision 288270c1466dSAndrey V. Elsukov * should make table_manage_sets_all(). 288370c1466dSAndrey V. Elsukov */ 288470c1466dSAndrey V. Elsukov return (0); 28852685841bSAndrey V. Elsukov case TEST_ONE: 28862685841bSAndrey V. Elsukov case MOVE_ONE: 28872685841bSAndrey V. Elsukov /* 28882685841bSAndrey V. Elsukov * NOTE: we need to use ipfw_objhash_del/ipfw_objhash_add 28892685841bSAndrey V. Elsukov * if set number will be used in hash function. Currently 28902685841bSAndrey V. Elsukov * we can just use generic handler that replaces set value. 28912685841bSAndrey V. Elsukov */ 28922685841bSAndrey V. Elsukov if (V_fw_tables_sets == 0) 28932685841bSAndrey V. Elsukov return (0); 28942685841bSAndrey V. Elsukov break; 28952685841bSAndrey V. Elsukov case COUNT_ONE: 28962685841bSAndrey V. Elsukov /* 28972685841bSAndrey V. Elsukov * Return EOPNOTSUPP for COUNT_ONE when per-set sysctl is 28982685841bSAndrey V. Elsukov * disabled. This allow skip table's opcodes from additional 28992685841bSAndrey V. Elsukov * checks when specific rules moved to another set. 29002685841bSAndrey V. Elsukov */ 29012685841bSAndrey V. Elsukov if (V_fw_tables_sets == 0) 29022685841bSAndrey V. Elsukov return (EOPNOTSUPP); 29032685841bSAndrey V. Elsukov } 29042685841bSAndrey V. Elsukov /* Use generic sets handler when per-set sysctl is enabled. */ 29052685841bSAndrey V. Elsukov return (ipfw_obj_manage_sets(CHAIN_TO_NI(ch), IPFW_TLV_TBL_NAME, 29062685841bSAndrey V. Elsukov set, new_set, cmd)); 29072685841bSAndrey V. Elsukov } 29082685841bSAndrey V. Elsukov 290970c1466dSAndrey V. Elsukov /* 291070c1466dSAndrey V. Elsukov * We register several opcode rewriters for lookup tables. 291170c1466dSAndrey V. Elsukov * All tables opcodes have the same ETLV type, but different subtype. 291270c1466dSAndrey V. Elsukov * To avoid invoking sets handler several times for XXX_ALL commands, 291370c1466dSAndrey V. Elsukov * we use separate manage_sets handler. O_RECV has the lowest value, 291470c1466dSAndrey V. Elsukov * so it should be called first. 291570c1466dSAndrey V. Elsukov */ 291670c1466dSAndrey V. Elsukov static int 291770c1466dSAndrey V. Elsukov table_manage_sets_all(struct ip_fw_chain *ch, uint16_t set, uint8_t new_set, 291870c1466dSAndrey V. Elsukov enum ipfw_sets_cmd cmd) 291970c1466dSAndrey V. Elsukov { 292070c1466dSAndrey V. Elsukov 292170c1466dSAndrey V. Elsukov switch (cmd) { 292270c1466dSAndrey V. Elsukov case SWAP_ALL: 292370c1466dSAndrey V. Elsukov case TEST_ALL: 292470c1466dSAndrey V. Elsukov /* 292570c1466dSAndrey V. Elsukov * Return success for TEST_ALL, since nothing prevents 292670c1466dSAndrey V. Elsukov * move rules from one set to another. All tables are 292770c1466dSAndrey V. Elsukov * accessible from all sets when per-set tables sysctl 292870c1466dSAndrey V. Elsukov * is disabled. 292970c1466dSAndrey V. Elsukov */ 293070c1466dSAndrey V. Elsukov case MOVE_ALL: 293170c1466dSAndrey V. Elsukov if (V_fw_tables_sets == 0) 293270c1466dSAndrey V. Elsukov return (0); 293370c1466dSAndrey V. Elsukov break; 293470c1466dSAndrey V. Elsukov default: 293570c1466dSAndrey V. Elsukov return (table_manage_sets(ch, set, new_set, cmd)); 293670c1466dSAndrey V. Elsukov } 293770c1466dSAndrey V. Elsukov /* Use generic sets handler when per-set sysctl is enabled. */ 293870c1466dSAndrey V. Elsukov return (ipfw_obj_manage_sets(CHAIN_TO_NI(ch), IPFW_TLV_TBL_NAME, 293970c1466dSAndrey V. Elsukov set, new_set, cmd)); 294070c1466dSAndrey V. Elsukov } 294170c1466dSAndrey V. Elsukov 294274b22066SAlexander V. Chernikov static struct opcode_obj_rewrite opcodes[] = { 294374b22066SAlexander V. Chernikov { 29442685841bSAndrey V. Elsukov .opcode = O_IP_SRC_LOOKUP, 29452685841bSAndrey V. Elsukov .etlv = IPFW_TLV_TBL_NAME, 29462685841bSAndrey V. Elsukov .classifier = classify_srcdst, 29472685841bSAndrey V. Elsukov .update = update_arg1, 29482685841bSAndrey V. Elsukov .find_byname = table_findbyname, 29492685841bSAndrey V. Elsukov .find_bykidx = table_findbykidx, 29502685841bSAndrey V. Elsukov .create_object = create_table_compat, 29512685841bSAndrey V. Elsukov .manage_sets = table_manage_sets, 295274b22066SAlexander V. Chernikov }, 295374b22066SAlexander V. Chernikov { 29542685841bSAndrey V. Elsukov .opcode = O_IP_DST_LOOKUP, 29552685841bSAndrey V. Elsukov .etlv = IPFW_TLV_TBL_NAME, 29562685841bSAndrey V. Elsukov .classifier = classify_srcdst, 29572685841bSAndrey V. Elsukov .update = update_arg1, 29582685841bSAndrey V. Elsukov .find_byname = table_findbyname, 29592685841bSAndrey V. Elsukov .find_bykidx = table_findbykidx, 29602685841bSAndrey V. Elsukov .create_object = create_table_compat, 29612685841bSAndrey V. Elsukov .manage_sets = table_manage_sets, 296274b22066SAlexander V. Chernikov }, 296374b22066SAlexander V. Chernikov { 29642685841bSAndrey V. Elsukov .opcode = O_IP_FLOW_LOOKUP, 29652685841bSAndrey V. Elsukov .etlv = IPFW_TLV_TBL_NAME, 29662685841bSAndrey V. Elsukov .classifier = classify_flow, 29672685841bSAndrey V. Elsukov .update = update_arg1, 29682685841bSAndrey V. Elsukov .find_byname = table_findbyname, 29692685841bSAndrey V. Elsukov .find_bykidx = table_findbykidx, 29702685841bSAndrey V. Elsukov .create_object = create_table_compat, 29712685841bSAndrey V. Elsukov .manage_sets = table_manage_sets, 297274b22066SAlexander V. Chernikov }, 297374b22066SAlexander V. Chernikov { 29742685841bSAndrey V. Elsukov .opcode = O_XMIT, 29752685841bSAndrey V. Elsukov .etlv = IPFW_TLV_TBL_NAME, 29762685841bSAndrey V. Elsukov .classifier = classify_via, 29772685841bSAndrey V. Elsukov .update = update_via, 29782685841bSAndrey V. Elsukov .find_byname = table_findbyname, 29792685841bSAndrey V. Elsukov .find_bykidx = table_findbykidx, 29802685841bSAndrey V. Elsukov .create_object = create_table_compat, 29812685841bSAndrey V. Elsukov .manage_sets = table_manage_sets, 298274b22066SAlexander V. Chernikov }, 298374b22066SAlexander V. Chernikov { 29842685841bSAndrey V. Elsukov .opcode = O_RECV, 29852685841bSAndrey V. Elsukov .etlv = IPFW_TLV_TBL_NAME, 29862685841bSAndrey V. Elsukov .classifier = classify_via, 29872685841bSAndrey V. Elsukov .update = update_via, 29882685841bSAndrey V. Elsukov .find_byname = table_findbyname, 29892685841bSAndrey V. Elsukov .find_bykidx = table_findbykidx, 29902685841bSAndrey V. Elsukov .create_object = create_table_compat, 299170c1466dSAndrey V. Elsukov .manage_sets = table_manage_sets_all, 299274b22066SAlexander V. Chernikov }, 299374b22066SAlexander V. Chernikov { 29942685841bSAndrey V. Elsukov .opcode = O_VIA, 29952685841bSAndrey V. Elsukov .etlv = IPFW_TLV_TBL_NAME, 29962685841bSAndrey V. Elsukov .classifier = classify_via, 29972685841bSAndrey V. Elsukov .update = update_via, 29982685841bSAndrey V. Elsukov .find_byname = table_findbyname, 29992685841bSAndrey V. Elsukov .find_bykidx = table_findbykidx, 30002685841bSAndrey V. Elsukov .create_object = create_table_compat, 30012685841bSAndrey V. Elsukov .manage_sets = table_manage_sets, 300274b22066SAlexander V. Chernikov }, 300374b22066SAlexander V. Chernikov }; 300474b22066SAlexander V. Chernikov 30052685841bSAndrey V. Elsukov static int 30062685841bSAndrey V. Elsukov test_sets_cb(struct namedobj_instance *ni __unused, struct named_object *no, 30072685841bSAndrey V. Elsukov void *arg __unused) 30082685841bSAndrey V. Elsukov { 30092685841bSAndrey V. Elsukov 30102685841bSAndrey V. Elsukov /* Check that there aren't any tables in not default set */ 30112685841bSAndrey V. Elsukov if (no->set != 0) 30122685841bSAndrey V. Elsukov return (EBUSY); 30132685841bSAndrey V. Elsukov return (0); 30142685841bSAndrey V. Elsukov } 30152685841bSAndrey V. Elsukov 30162685841bSAndrey V. Elsukov /* 30172685841bSAndrey V. Elsukov * Switch between "set 0" and "rule's set" table binding, 30182685841bSAndrey V. Elsukov * Check all ruleset bindings and permits changing 30192685841bSAndrey V. Elsukov * IFF each binding has both rule AND table in default set (set 0). 30202685841bSAndrey V. Elsukov * 30212685841bSAndrey V. Elsukov * Returns 0 on success. 30222685841bSAndrey V. Elsukov */ 30232685841bSAndrey V. Elsukov int 30242685841bSAndrey V. Elsukov ipfw_switch_tables_namespace(struct ip_fw_chain *ch, unsigned int sets) 30252685841bSAndrey V. Elsukov { 30262685841bSAndrey V. Elsukov struct opcode_obj_rewrite *rw; 30272685841bSAndrey V. Elsukov struct namedobj_instance *ni; 30282685841bSAndrey V. Elsukov struct named_object *no; 30292685841bSAndrey V. Elsukov struct ip_fw *rule; 30302685841bSAndrey V. Elsukov ipfw_insn *cmd; 30312685841bSAndrey V. Elsukov int cmdlen, i, l; 30322685841bSAndrey V. Elsukov uint16_t kidx; 30332685841bSAndrey V. Elsukov uint8_t subtype; 30342685841bSAndrey V. Elsukov 30352685841bSAndrey V. Elsukov IPFW_UH_WLOCK(ch); 30362685841bSAndrey V. Elsukov 30372685841bSAndrey V. Elsukov if (V_fw_tables_sets == sets) { 30382685841bSAndrey V. Elsukov IPFW_UH_WUNLOCK(ch); 30392685841bSAndrey V. Elsukov return (0); 30402685841bSAndrey V. Elsukov } 30412685841bSAndrey V. Elsukov ni = CHAIN_TO_NI(ch); 30422685841bSAndrey V. Elsukov if (sets == 0) { 30432685841bSAndrey V. Elsukov /* 30442685841bSAndrey V. Elsukov * Prevent disabling sets support if we have some tables 30452685841bSAndrey V. Elsukov * in not default sets. 30462685841bSAndrey V. Elsukov */ 30472685841bSAndrey V. Elsukov if (ipfw_objhash_foreach_type(ni, test_sets_cb, 30482685841bSAndrey V. Elsukov NULL, IPFW_TLV_TBL_NAME) != 0) { 30492685841bSAndrey V. Elsukov IPFW_UH_WUNLOCK(ch); 30502685841bSAndrey V. Elsukov return (EBUSY); 30512685841bSAndrey V. Elsukov } 30522685841bSAndrey V. Elsukov } 30532685841bSAndrey V. Elsukov /* 30542685841bSAndrey V. Elsukov * Scan all rules and examine tables opcodes. 30552685841bSAndrey V. Elsukov */ 30562685841bSAndrey V. Elsukov for (i = 0; i < ch->n_rules; i++) { 30572685841bSAndrey V. Elsukov rule = ch->map[i]; 30582685841bSAndrey V. Elsukov 30592685841bSAndrey V. Elsukov l = rule->cmd_len; 30602685841bSAndrey V. Elsukov cmd = rule->cmd; 30612685841bSAndrey V. Elsukov cmdlen = 0; 30622685841bSAndrey V. Elsukov for ( ; l > 0 ; l -= cmdlen, cmd += cmdlen) { 30632685841bSAndrey V. Elsukov cmdlen = F_LEN(cmd); 30642685841bSAndrey V. Elsukov /* Check only tables opcodes */ 30652685841bSAndrey V. Elsukov for (kidx = 0, rw = opcodes; 30662685841bSAndrey V. Elsukov rw < opcodes + nitems(opcodes); rw++) { 30672685841bSAndrey V. Elsukov if (rw->opcode != cmd->opcode) 30682685841bSAndrey V. Elsukov continue; 30692685841bSAndrey V. Elsukov if (rw->classifier(cmd, &kidx, &subtype) == 0) 30702685841bSAndrey V. Elsukov break; 30712685841bSAndrey V. Elsukov } 30722685841bSAndrey V. Elsukov if (kidx == 0) 30732685841bSAndrey V. Elsukov continue; 30742685841bSAndrey V. Elsukov no = ipfw_objhash_lookup_kidx(ni, kidx); 30752685841bSAndrey V. Elsukov /* Check if both table object and rule has the set 0 */ 30762685841bSAndrey V. Elsukov if (no->set != 0 || rule->set != 0) { 30772685841bSAndrey V. Elsukov IPFW_UH_WUNLOCK(ch); 30782685841bSAndrey V. Elsukov return (EBUSY); 30792685841bSAndrey V. Elsukov } 30802685841bSAndrey V. Elsukov 30812685841bSAndrey V. Elsukov } 30822685841bSAndrey V. Elsukov } 30832685841bSAndrey V. Elsukov V_fw_tables_sets = sets; 30842685841bSAndrey V. Elsukov IPFW_UH_WUNLOCK(ch); 30852685841bSAndrey V. Elsukov return (0); 30862685841bSAndrey V. Elsukov } 308774b22066SAlexander V. Chernikov 3088ac35ff17SAlexander V. Chernikov /* 3089ac35ff17SAlexander V. Chernikov * Checks table name for validity. 3090ac35ff17SAlexander V. Chernikov * Enforce basic length checks, the rest 3091ac35ff17SAlexander V. Chernikov * should be done in userland. 3092ac35ff17SAlexander V. Chernikov * 3093ac35ff17SAlexander V. Chernikov * Returns 0 if name is considered valid. 3094ac35ff17SAlexander V. Chernikov */ 3095f81431ccSAndrey V. Elsukov static int 3096f81431ccSAndrey V. Elsukov check_table_name(const char *name) 3097ac35ff17SAlexander V. Chernikov { 3098ac35ff17SAlexander V. Chernikov 3099ac35ff17SAlexander V. Chernikov /* 3100ac35ff17SAlexander V. Chernikov * TODO: do some more complicated checks 3101ac35ff17SAlexander V. Chernikov */ 3102f81431ccSAndrey V. Elsukov return (ipfw_check_object_name_generic(name)); 3103ac35ff17SAlexander V. Chernikov } 3104ac35ff17SAlexander V. Chernikov 3105ac35ff17SAlexander V. Chernikov /* 3106ac35ff17SAlexander V. Chernikov * Finds table config based on either legacy index 3107ac35ff17SAlexander V. Chernikov * or name in ntlv. 3108ac35ff17SAlexander V. Chernikov * Note @ti structure contains unchecked data from userland. 3109ac35ff17SAlexander V. Chernikov * 311074b22066SAlexander V. Chernikov * Returns 0 in success and fills in @tc with found config 3111ac35ff17SAlexander V. Chernikov */ 311274b22066SAlexander V. Chernikov static int 311374b22066SAlexander V. Chernikov find_table_err(struct namedobj_instance *ni, struct tid_info *ti, 311474b22066SAlexander V. Chernikov struct table_config **tc) 3115b074b7bbSAlexander V. Chernikov { 3116b074b7bbSAlexander V. Chernikov char *name, bname[16]; 3117b074b7bbSAlexander V. Chernikov struct named_object *no; 3118ac35ff17SAlexander V. Chernikov ipfw_obj_ntlv *ntlv; 3119ac35ff17SAlexander V. Chernikov uint32_t set; 3120b074b7bbSAlexander V. Chernikov 3121b074b7bbSAlexander V. Chernikov if (ti->tlvs != NULL) { 31222df1a11fSAndrey V. Elsukov ntlv = ipfw_find_name_tlv_type(ti->tlvs, ti->tlen, ti->uidx, 31232df1a11fSAndrey V. Elsukov IPFW_TLV_TBL_NAME); 3124ac35ff17SAlexander V. Chernikov if (ntlv == NULL) 312574b22066SAlexander V. Chernikov return (EINVAL); 3126ac35ff17SAlexander V. Chernikov name = ntlv->name; 312740e5f498SAlexander V. Chernikov 312840e5f498SAlexander V. Chernikov /* 312940e5f498SAlexander V. Chernikov * Use set provided by @ti instead of @ntlv one. 313040e5f498SAlexander V. Chernikov * This is needed due to different sets behavior 313140e5f498SAlexander V. Chernikov * controlled by V_fw_tables_sets. 313240e5f498SAlexander V. Chernikov */ 31332685841bSAndrey V. Elsukov set = (V_fw_tables_sets != 0) ? ti->set : 0; 3134b074b7bbSAlexander V. Chernikov } else { 3135b074b7bbSAlexander V. Chernikov snprintf(bname, sizeof(bname), "%d", ti->uidx); 3136b074b7bbSAlexander V. Chernikov name = bname; 3137ac35ff17SAlexander V. Chernikov set = 0; 3138b074b7bbSAlexander V. Chernikov } 3139b074b7bbSAlexander V. Chernikov 3140ac35ff17SAlexander V. Chernikov no = ipfw_objhash_lookup_name(ni, set, name); 314174b22066SAlexander V. Chernikov *tc = (struct table_config *)no; 3142b074b7bbSAlexander V. Chernikov 314374b22066SAlexander V. Chernikov return (0); 314474b22066SAlexander V. Chernikov } 314574b22066SAlexander V. Chernikov 314674b22066SAlexander V. Chernikov /* 314774b22066SAlexander V. Chernikov * Finds table config based on either legacy index 314874b22066SAlexander V. Chernikov * or name in ntlv. 314974b22066SAlexander V. Chernikov * Note @ti structure contains unchecked data from userland. 315074b22066SAlexander V. Chernikov * 315174b22066SAlexander V. Chernikov * Returns pointer to table_config or NULL. 315274b22066SAlexander V. Chernikov */ 315374b22066SAlexander V. Chernikov static struct table_config * 315474b22066SAlexander V. Chernikov find_table(struct namedobj_instance *ni, struct tid_info *ti) 315574b22066SAlexander V. Chernikov { 315674b22066SAlexander V. Chernikov struct table_config *tc; 315774b22066SAlexander V. Chernikov 315874b22066SAlexander V. Chernikov if (find_table_err(ni, ti, &tc) != 0) 315974b22066SAlexander V. Chernikov return (NULL); 316074b22066SAlexander V. Chernikov 316174b22066SAlexander V. Chernikov return (tc); 3162b074b7bbSAlexander V. Chernikov } 3163b074b7bbSAlexander V. Chernikov 316435e1bbd0SAlexander V. Chernikov /* 316535e1bbd0SAlexander V. Chernikov * Allocate new table config structure using 316635e1bbd0SAlexander V. Chernikov * specified @algo and @aname. 316735e1bbd0SAlexander V. Chernikov * 316835e1bbd0SAlexander V. Chernikov * Returns pointer to config or NULL. 316935e1bbd0SAlexander V. Chernikov */ 3170b074b7bbSAlexander V. Chernikov static struct table_config * 317168394ec8SAlexander V. Chernikov alloc_table_config(struct ip_fw_chain *ch, struct tid_info *ti, 31720cba2b28SAlexander V. Chernikov struct table_algo *ta, char *aname, uint8_t tflags) 3173b074b7bbSAlexander V. Chernikov { 3174b074b7bbSAlexander V. Chernikov char *name, bname[16]; 3175b074b7bbSAlexander V. Chernikov struct table_config *tc; 3176b074b7bbSAlexander V. Chernikov int error; 3177ac35ff17SAlexander V. Chernikov ipfw_obj_ntlv *ntlv; 3178ac35ff17SAlexander V. Chernikov uint32_t set; 3179b074b7bbSAlexander V. Chernikov 3180b074b7bbSAlexander V. Chernikov if (ti->tlvs != NULL) { 31812df1a11fSAndrey V. Elsukov ntlv = ipfw_find_name_tlv_type(ti->tlvs, ti->tlen, ti->uidx, 31822df1a11fSAndrey V. Elsukov IPFW_TLV_TBL_NAME); 3183ac35ff17SAlexander V. Chernikov if (ntlv == NULL) 3184b074b7bbSAlexander V. Chernikov return (NULL); 3185ac35ff17SAlexander V. Chernikov name = ntlv->name; 3186ac35ff17SAlexander V. Chernikov set = ntlv->set; 3187b074b7bbSAlexander V. Chernikov } else { 318874b22066SAlexander V. Chernikov /* Compat part: convert number to string representation */ 3189b074b7bbSAlexander V. Chernikov snprintf(bname, sizeof(bname), "%d", ti->uidx); 3190b074b7bbSAlexander V. Chernikov name = bname; 3191ac35ff17SAlexander V. Chernikov set = 0; 3192b074b7bbSAlexander V. Chernikov } 3193b074b7bbSAlexander V. Chernikov 3194b074b7bbSAlexander V. Chernikov tc = malloc(sizeof(struct table_config), M_IPFW, M_WAITOK | M_ZERO); 3195b074b7bbSAlexander V. Chernikov tc->no.name = tc->tablename; 319674b22066SAlexander V. Chernikov tc->no.subtype = ta->type; 3197ac35ff17SAlexander V. Chernikov tc->no.set = set; 3198914bffb6SAlexander V. Chernikov tc->tflags = tflags; 31999f7d47b0SAlexander V. Chernikov tc->ta = ta; 3200b074b7bbSAlexander V. Chernikov strlcpy(tc->tablename, name, sizeof(tc->tablename)); 32010cba2b28SAlexander V. Chernikov /* Set "shared" value type by default */ 32020cba2b28SAlexander V. Chernikov tc->vshared = 1; 3203b074b7bbSAlexander V. Chernikov 3204b074b7bbSAlexander V. Chernikov /* Preallocate data structures for new tables */ 32054c060d85SAlexander V. Chernikov error = ta->init(ch, &tc->astate, &tc->ti_copy, aname, tflags); 3206b074b7bbSAlexander V. Chernikov if (error != 0) { 3207b074b7bbSAlexander V. Chernikov free(tc, M_IPFW); 3208b074b7bbSAlexander V. Chernikov return (NULL); 3209b074b7bbSAlexander V. Chernikov } 3210b074b7bbSAlexander V. Chernikov 3211b074b7bbSAlexander V. Chernikov return (tc); 3212b074b7bbSAlexander V. Chernikov } 3213b074b7bbSAlexander V. Chernikov 321435e1bbd0SAlexander V. Chernikov /* 321535e1bbd0SAlexander V. Chernikov * Destroys table state and config. 321635e1bbd0SAlexander V. Chernikov */ 3217b074b7bbSAlexander V. Chernikov static void 3218b074b7bbSAlexander V. Chernikov free_table_config(struct namedobj_instance *ni, struct table_config *tc) 3219b074b7bbSAlexander V. Chernikov { 3220b074b7bbSAlexander V. Chernikov 322135e1bbd0SAlexander V. Chernikov KASSERT(tc->linked == 0, ("free() on linked config")); 32220caab009SAlexander V. Chernikov /* UH lock MUST NOT be held */ 3223b074b7bbSAlexander V. Chernikov 32240468c5baSAlexander V. Chernikov /* 32250468c5baSAlexander V. Chernikov * We're using ta without any locking/referencing. 32260468c5baSAlexander V. Chernikov * TODO: fix this if we're going to use unloadable algos. 32270468c5baSAlexander V. Chernikov */ 32284c060d85SAlexander V. Chernikov tc->ta->destroy(tc->astate, &tc->ti_copy); 3229b074b7bbSAlexander V. Chernikov free(tc, M_IPFW); 3230b074b7bbSAlexander V. Chernikov } 3231b074b7bbSAlexander V. Chernikov 3232b074b7bbSAlexander V. Chernikov /* 3233b074b7bbSAlexander V. Chernikov * Links @tc to @chain table named instance. 3234b074b7bbSAlexander V. Chernikov * Sets appropriate type/states in @chain table info. 3235b074b7bbSAlexander V. Chernikov */ 3236b074b7bbSAlexander V. Chernikov static void 32379f7d47b0SAlexander V. Chernikov link_table(struct ip_fw_chain *ch, struct table_config *tc) 3238b074b7bbSAlexander V. Chernikov { 3239b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 32409f7d47b0SAlexander V. Chernikov struct table_info *ti; 3241b074b7bbSAlexander V. Chernikov uint16_t kidx; 3242b074b7bbSAlexander V. Chernikov 32439f7d47b0SAlexander V. Chernikov IPFW_UH_WLOCK_ASSERT(ch); 32449f7d47b0SAlexander V. Chernikov IPFW_WLOCK_ASSERT(ch); 3245b074b7bbSAlexander V. Chernikov 32469f7d47b0SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 3247b074b7bbSAlexander V. Chernikov kidx = tc->no.kidx; 3248b074b7bbSAlexander V. Chernikov 3249b074b7bbSAlexander V. Chernikov ipfw_objhash_add(ni, &tc->no); 32509f7d47b0SAlexander V. Chernikov 32519f7d47b0SAlexander V. Chernikov ti = KIDX_TO_TI(ch, kidx); 32524c060d85SAlexander V. Chernikov *ti = tc->ti_copy; 3253b074b7bbSAlexander V. Chernikov 325468394ec8SAlexander V. Chernikov /* Notify algo on real @ti address */ 325568394ec8SAlexander V. Chernikov if (tc->ta->change_ti != NULL) 325668394ec8SAlexander V. Chernikov tc->ta->change_ti(tc->astate, ti); 325768394ec8SAlexander V. Chernikov 3258b074b7bbSAlexander V. Chernikov tc->linked = 1; 32599d099b4fSAlexander V. Chernikov tc->ta->refcnt++; 3260b074b7bbSAlexander V. Chernikov } 3261b074b7bbSAlexander V. Chernikov 3262b074b7bbSAlexander V. Chernikov /* 3263b074b7bbSAlexander V. Chernikov * Unlinks @tc from @chain table named instance. 3264b074b7bbSAlexander V. Chernikov * Zeroes states in @chain and stores them in @tc. 3265b074b7bbSAlexander V. Chernikov */ 3266b074b7bbSAlexander V. Chernikov static void 32679f7d47b0SAlexander V. Chernikov unlink_table(struct ip_fw_chain *ch, struct table_config *tc) 3268b074b7bbSAlexander V. Chernikov { 3269b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 32709f7d47b0SAlexander V. Chernikov struct table_info *ti; 3271b074b7bbSAlexander V. Chernikov uint16_t kidx; 3272b074b7bbSAlexander V. Chernikov 32739f7d47b0SAlexander V. Chernikov IPFW_UH_WLOCK_ASSERT(ch); 32749f7d47b0SAlexander V. Chernikov IPFW_WLOCK_ASSERT(ch); 3275b074b7bbSAlexander V. Chernikov 32769f7d47b0SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 3277b074b7bbSAlexander V. Chernikov kidx = tc->no.kidx; 3278b074b7bbSAlexander V. Chernikov 32799f7d47b0SAlexander V. Chernikov /* Clear state. @ti copy is already saved inside @tc */ 3280b074b7bbSAlexander V. Chernikov ipfw_objhash_del(ni, &tc->no); 32819f7d47b0SAlexander V. Chernikov ti = KIDX_TO_TI(ch, kidx); 32829f7d47b0SAlexander V. Chernikov memset(ti, 0, sizeof(struct table_info)); 3283b074b7bbSAlexander V. Chernikov tc->linked = 0; 32849d099b4fSAlexander V. Chernikov tc->ta->refcnt--; 328568394ec8SAlexander V. Chernikov 328668394ec8SAlexander V. Chernikov /* Notify algo on real @ti address */ 328768394ec8SAlexander V. Chernikov if (tc->ta->change_ti != NULL) 328868394ec8SAlexander V. Chernikov tc->ta->change_ti(tc->astate, NULL); 3289b074b7bbSAlexander V. Chernikov } 3290b074b7bbSAlexander V. Chernikov 32916b988f3aSAlexander V. Chernikov static struct ipfw_sopt_handler scodes[] = { 32926b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XCREATE, 0, HDIR_SET, create_table }, 32936b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XDESTROY, 0, HDIR_SET, flush_table_v0 }, 32946b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XFLUSH, 0, HDIR_SET, flush_table_v0 }, 32956b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XMODIFY, 0, HDIR_BOTH, modify_table }, 32966b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XINFO, 0, HDIR_GET, describe_table }, 32976b988f3aSAlexander V. Chernikov { IP_FW_TABLES_XLIST, 0, HDIR_GET, list_tables }, 32986b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XLIST, 0, HDIR_GET, dump_table_v0 }, 32996b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XLIST, 1, HDIR_GET, dump_table_v1 }, 33006b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XADD, 0, HDIR_BOTH, manage_table_ent_v0 }, 33016b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XADD, 1, HDIR_BOTH, manage_table_ent_v1 }, 33026b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XDEL, 0, HDIR_BOTH, manage_table_ent_v0 }, 33036b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XDEL, 1, HDIR_BOTH, manage_table_ent_v1 }, 33046b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XFIND, 0, HDIR_GET, find_table_entry }, 33056b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XSWAP, 0, HDIR_SET, swap_table }, 33066b988f3aSAlexander V. Chernikov { IP_FW_TABLES_ALIST, 0, HDIR_GET, list_table_algo }, 33076b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XGETSIZE, 0, HDIR_GET, get_table_size }, 33086b988f3aSAlexander V. Chernikov }; 33096b988f3aSAlexander V. Chernikov 3310b309f085SAndrey V. Elsukov static int 33116b988f3aSAlexander V. Chernikov destroy_table_locked(struct namedobj_instance *ni, struct named_object *no, 33126b988f3aSAlexander V. Chernikov void *arg) 33136b988f3aSAlexander V. Chernikov { 33146b988f3aSAlexander V. Chernikov 33156b988f3aSAlexander V. Chernikov unlink_table((struct ip_fw_chain *)arg, (struct table_config *)no); 33166b988f3aSAlexander V. Chernikov if (ipfw_objhash_free_idx(ni, no->kidx) != 0) 33176b988f3aSAlexander V. Chernikov printf("Error unlinking kidx %d from table %s\n", 33186b988f3aSAlexander V. Chernikov no->kidx, no->name); 33196b988f3aSAlexander V. Chernikov free_table_config(ni, (struct table_config *)no); 3320b309f085SAndrey V. Elsukov return (0); 33216b988f3aSAlexander V. Chernikov } 33226b988f3aSAlexander V. Chernikov 33236b988f3aSAlexander V. Chernikov /* 33246b988f3aSAlexander V. Chernikov * Shuts tables module down. 33256b988f3aSAlexander V. Chernikov */ 33266b988f3aSAlexander V. Chernikov void 33276b988f3aSAlexander V. Chernikov ipfw_destroy_tables(struct ip_fw_chain *ch, int last) 33286b988f3aSAlexander V. Chernikov { 33296b988f3aSAlexander V. Chernikov 33306b988f3aSAlexander V. Chernikov IPFW_DEL_SOPT_HANDLER(last, scodes); 333174b22066SAlexander V. Chernikov IPFW_DEL_OBJ_REWRITER(last, opcodes); 33326b988f3aSAlexander V. Chernikov 33336b988f3aSAlexander V. Chernikov /* Remove all tables from working set */ 33346b988f3aSAlexander V. Chernikov IPFW_UH_WLOCK(ch); 33356b988f3aSAlexander V. Chernikov IPFW_WLOCK(ch); 33366b988f3aSAlexander V. Chernikov ipfw_objhash_foreach(CHAIN_TO_NI(ch), destroy_table_locked, ch); 33376b988f3aSAlexander V. Chernikov IPFW_WUNLOCK(ch); 33386b988f3aSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 33396b988f3aSAlexander V. Chernikov 33406b988f3aSAlexander V. Chernikov /* Free pointers itself */ 33416b988f3aSAlexander V. Chernikov free(ch->tablestate, M_IPFW); 33426b988f3aSAlexander V. Chernikov 33436b988f3aSAlexander V. Chernikov ipfw_table_value_destroy(ch, last); 33446b988f3aSAlexander V. Chernikov ipfw_table_algo_destroy(ch); 33456b988f3aSAlexander V. Chernikov 33466b988f3aSAlexander V. Chernikov ipfw_objhash_destroy(CHAIN_TO_NI(ch)); 33476b988f3aSAlexander V. Chernikov free(CHAIN_TO_TCFG(ch), M_IPFW); 33486b988f3aSAlexander V. Chernikov } 33496b988f3aSAlexander V. Chernikov 33506b988f3aSAlexander V. Chernikov /* 33516b988f3aSAlexander V. Chernikov * Starts tables module. 33526b988f3aSAlexander V. Chernikov */ 33536b988f3aSAlexander V. Chernikov int 33546b988f3aSAlexander V. Chernikov ipfw_init_tables(struct ip_fw_chain *ch, int first) 33556b988f3aSAlexander V. Chernikov { 33566b988f3aSAlexander V. Chernikov struct tables_config *tcfg; 33576b988f3aSAlexander V. Chernikov 33586b988f3aSAlexander V. Chernikov /* Allocate pointers */ 33596b988f3aSAlexander V. Chernikov ch->tablestate = malloc(V_fw_tables_max * sizeof(struct table_info), 33606b988f3aSAlexander V. Chernikov M_IPFW, M_WAITOK | M_ZERO); 33616b988f3aSAlexander V. Chernikov 33626b988f3aSAlexander V. Chernikov tcfg = malloc(sizeof(struct tables_config), M_IPFW, M_WAITOK | M_ZERO); 33636b988f3aSAlexander V. Chernikov tcfg->namehash = ipfw_objhash_create(V_fw_tables_max); 33646b988f3aSAlexander V. Chernikov ch->tblcfg = tcfg; 33656b988f3aSAlexander V. Chernikov 33666b988f3aSAlexander V. Chernikov ipfw_table_value_init(ch, first); 33676b988f3aSAlexander V. Chernikov ipfw_table_algo_init(ch); 33686b988f3aSAlexander V. Chernikov 336974b22066SAlexander V. Chernikov IPFW_ADD_OBJ_REWRITER(first, opcodes); 33706b988f3aSAlexander V. Chernikov IPFW_ADD_SOPT_HANDLER(first, scodes); 33716b988f3aSAlexander V. Chernikov return (0); 33726b988f3aSAlexander V. Chernikov } 33736b988f3aSAlexander V. Chernikov 33746b988f3aSAlexander V. Chernikov 33756b988f3aSAlexander V. Chernikov 3376