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 */ 5688d950a6SAndrey V. Elsukov #include <net/pfil.h> 573b3a8eb9SGleb Smirnoff 583b3a8eb9SGleb Smirnoff #include <netinet/in.h> 593b3a8eb9SGleb Smirnoff #include <netinet/ip_var.h> /* struct ipfw_rule_ref */ 603b3a8eb9SGleb Smirnoff #include <netinet/ip_fw.h> 613b3a8eb9SGleb Smirnoff 623b3a8eb9SGleb Smirnoff #include <netpfil/ipfw/ip_fw_private.h> 63ea761a5dSAlexander V. Chernikov #include <netpfil/ipfw/ip_fw_table.h> 643b3a8eb9SGleb Smirnoff 653b3a8eb9SGleb Smirnoff /* 66b074b7bbSAlexander V. Chernikov * Table has the following `type` concepts: 67b074b7bbSAlexander V. Chernikov * 68c21034b7SAlexander V. Chernikov * `no.type` represents lookup key type (addr, ifp, uid, etc..) 690cba2b28SAlexander V. Chernikov * vmask represents bitmask of table values which are present at the moment. 700cba2b28SAlexander V. Chernikov * Special IPFW_VTYPE_LEGACY ( (uint32_t)-1 ) represents old 710cba2b28SAlexander V. Chernikov * single-value-for-all approach. 72b074b7bbSAlexander V. Chernikov */ 73b074b7bbSAlexander V. Chernikov struct table_config { 74b074b7bbSAlexander V. Chernikov struct named_object no; 75914bffb6SAlexander V. Chernikov uint8_t tflags; /* type flags */ 764f43138aSAlexander V. Chernikov uint8_t locked; /* 1 if locked from changes */ 77adf3b2b9SAlexander V. Chernikov uint8_t linked; /* 1 if already linked */ 78adf3b2b9SAlexander V. Chernikov uint8_t ochanged; /* used by set swapping */ 790cba2b28SAlexander V. Chernikov uint8_t vshared; /* 1 if using shared value array */ 800cba2b28SAlexander V. Chernikov uint8_t spare[3]; 810cba2b28SAlexander V. Chernikov uint32_t count; /* Number of records */ 820cba2b28SAlexander V. Chernikov uint32_t limit; /* Max number of records */ 830cba2b28SAlexander V. Chernikov uint32_t vmask; /* bitmask with supported values */ 84a73d728dSAlexander V. Chernikov uint32_t ocount; /* used by set swapping */ 85a73d728dSAlexander V. Chernikov uint64_t gencnt; /* generation count */ 86b074b7bbSAlexander V. Chernikov char tablename[64]; /* table name */ 879f7d47b0SAlexander V. Chernikov struct table_algo *ta; /* Callbacks for given algo */ 889f7d47b0SAlexander V. Chernikov void *astate; /* algorithm state */ 894c060d85SAlexander V. Chernikov struct table_info ti_copy; /* data to put to table_info */ 900cba2b28SAlexander V. Chernikov struct namedobj_instance *vi; 91b074b7bbSAlexander V. Chernikov }; 92b074b7bbSAlexander V. Chernikov 9374b22066SAlexander V. Chernikov static int find_table_err(struct namedobj_instance *ni, struct tid_info *ti, 9474b22066SAlexander V. Chernikov struct table_config **tc); 95b074b7bbSAlexander V. Chernikov static struct table_config *find_table(struct namedobj_instance *ni, 96b074b7bbSAlexander V. Chernikov struct tid_info *ti); 9768394ec8SAlexander V. Chernikov static struct table_config *alloc_table_config(struct ip_fw_chain *ch, 980cba2b28SAlexander V. Chernikov struct tid_info *ti, struct table_algo *ta, char *adata, uint8_t tflags); 99b074b7bbSAlexander V. Chernikov static void free_table_config(struct namedobj_instance *ni, 100b074b7bbSAlexander V. Chernikov struct table_config *tc); 101db785d31SAlexander V. Chernikov static int create_table_internal(struct ip_fw_chain *ch, struct tid_info *ti, 102867708f7SAlexander V. Chernikov char *aname, ipfw_xtable_info *i, uint16_t *pkidx, int ref); 1030468c5baSAlexander V. Chernikov static void link_table(struct ip_fw_chain *ch, struct table_config *tc); 1040468c5baSAlexander V. Chernikov static void unlink_table(struct ip_fw_chain *ch, struct table_config *tc); 1054dff4ae0SAlexander V. Chernikov static int find_ref_table(struct ip_fw_chain *ch, struct tid_info *ti, 106867708f7SAlexander V. Chernikov struct tentry_info *tei, uint32_t count, int op, struct table_config **ptc); 1074dff4ae0SAlexander V. Chernikov #define OP_ADD 1 1084dff4ae0SAlexander V. Chernikov #define OP_DEL 0 1092d99a349SAlexander V. Chernikov static int export_tables(struct ip_fw_chain *ch, ipfw_obj_lheader *olh, 1102d99a349SAlexander V. Chernikov struct sockopt_data *sd); 111ac35ff17SAlexander V. Chernikov static void export_table_info(struct ip_fw_chain *ch, struct table_config *tc, 112ac35ff17SAlexander V. Chernikov ipfw_xtable_info *i); 11381d3153dSAlexander V. Chernikov static int dump_table_tentry(void *e, void *arg); 114f1220db8SAlexander V. Chernikov static int dump_table_xentry(void *e, void *arg); 115b074b7bbSAlexander V. Chernikov 116a73d728dSAlexander V. Chernikov static int swap_tables(struct ip_fw_chain *ch, struct tid_info *a, 11746d52008SAlexander V. Chernikov struct tid_info *b); 118ac35ff17SAlexander V. Chernikov 119f81431ccSAndrey V. Elsukov static int check_table_name(const char *name); 1200cba2b28SAlexander V. Chernikov static int check_table_space(struct ip_fw_chain *ch, struct tableop_state *ts, 1210cba2b28SAlexander V. Chernikov struct table_config *tc, struct table_info *ti, uint32_t count); 122ac35ff17SAlexander V. Chernikov static int destroy_table(struct ip_fw_chain *ch, struct tid_info *ti); 123d3a4f924SAlexander V. Chernikov 1249f7d47b0SAlexander V. Chernikov static struct table_algo *find_table_algo(struct tables_config *tableconf, 1259490a627SAlexander V. Chernikov struct tid_info *ti, char *name); 126b074b7bbSAlexander V. Chernikov 12746d52008SAlexander V. Chernikov static void objheader_to_ti(struct _ipfw_obj_header *oh, struct tid_info *ti); 12846d52008SAlexander V. Chernikov static void ntlv_to_ti(struct _ipfw_obj_ntlv *ntlv, struct tid_info *ti); 12946d52008SAlexander V. Chernikov 130b074b7bbSAlexander V. Chernikov #define CHAIN_TO_NI(chain) (CHAIN_TO_TCFG(chain)->namehash) 1319f7d47b0SAlexander V. Chernikov #define KIDX_TO_TI(ch, k) (&(((struct table_info *)(ch)->tablestate)[k])) 132b074b7bbSAlexander V. Chernikov 133b6ee846eSAlexander V. Chernikov #define TA_BUF_SZ 128 /* On-stack buffer for add/delete state */ 134b6ee846eSAlexander V. Chernikov 1350cba2b28SAlexander V. Chernikov void 1360cba2b28SAlexander V. Chernikov rollback_toperation_state(struct ip_fw_chain *ch, void *object) 1370cba2b28SAlexander V. Chernikov { 1380cba2b28SAlexander V. Chernikov struct tables_config *tcfg; 1390cba2b28SAlexander V. Chernikov struct op_state *os; 1400cba2b28SAlexander V. Chernikov 1410cba2b28SAlexander V. Chernikov tcfg = CHAIN_TO_TCFG(ch); 1420cba2b28SAlexander V. Chernikov TAILQ_FOREACH(os, &tcfg->state_list, next) 143fb4b37a3SAlexander V. Chernikov os->func(object, os); 1440cba2b28SAlexander V. Chernikov } 1450cba2b28SAlexander V. Chernikov 1460cba2b28SAlexander V. Chernikov void 1470cba2b28SAlexander V. Chernikov add_toperation_state(struct ip_fw_chain *ch, struct tableop_state *ts) 1480cba2b28SAlexander V. Chernikov { 1490cba2b28SAlexander V. Chernikov struct tables_config *tcfg; 1500cba2b28SAlexander V. Chernikov 1510cba2b28SAlexander V. Chernikov tcfg = CHAIN_TO_TCFG(ch); 1520cba2b28SAlexander V. Chernikov TAILQ_INSERT_HEAD(&tcfg->state_list, &ts->opstate, next); 1530cba2b28SAlexander V. Chernikov } 1540cba2b28SAlexander V. Chernikov 1550cba2b28SAlexander V. Chernikov void 1560cba2b28SAlexander V. Chernikov del_toperation_state(struct ip_fw_chain *ch, struct tableop_state *ts) 1570cba2b28SAlexander V. Chernikov { 1580cba2b28SAlexander V. Chernikov struct tables_config *tcfg; 1590cba2b28SAlexander V. Chernikov 1600cba2b28SAlexander V. Chernikov tcfg = CHAIN_TO_TCFG(ch); 1610cba2b28SAlexander V. Chernikov TAILQ_REMOVE(&tcfg->state_list, &ts->opstate, next); 1620cba2b28SAlexander V. Chernikov } 1630cba2b28SAlexander V. Chernikov 1640cba2b28SAlexander V. Chernikov void 1650cba2b28SAlexander V. Chernikov tc_ref(struct table_config *tc) 1660cba2b28SAlexander V. Chernikov { 1670cba2b28SAlexander V. Chernikov 1680cba2b28SAlexander V. Chernikov tc->no.refcnt++; 1690cba2b28SAlexander V. Chernikov } 1700cba2b28SAlexander V. Chernikov 1710cba2b28SAlexander V. Chernikov void 1720cba2b28SAlexander V. Chernikov tc_unref(struct table_config *tc) 1730cba2b28SAlexander V. Chernikov { 1740cba2b28SAlexander V. Chernikov 1750cba2b28SAlexander V. Chernikov tc->no.refcnt--; 1760cba2b28SAlexander V. Chernikov } 1770cba2b28SAlexander V. Chernikov 1780cba2b28SAlexander V. Chernikov static struct table_value * 1790cba2b28SAlexander V. Chernikov get_table_value(struct ip_fw_chain *ch, struct table_config *tc, uint32_t kidx) 1800cba2b28SAlexander V. Chernikov { 1810cba2b28SAlexander V. Chernikov struct table_value *pval; 1820cba2b28SAlexander V. Chernikov 1830cba2b28SAlexander V. Chernikov pval = (struct table_value *)ch->valuestate; 1840cba2b28SAlexander V. Chernikov 1850cba2b28SAlexander V. Chernikov return (&pval[kidx]); 1860cba2b28SAlexander V. Chernikov } 1870cba2b28SAlexander V. Chernikov 1880cba2b28SAlexander V. Chernikov 1893a845e10SAlexander V. Chernikov /* 1903a845e10SAlexander V. Chernikov * Checks if we're able to insert/update entry @tei into table 1913a845e10SAlexander V. Chernikov * w.r.t @tc limits. 1923a845e10SAlexander V. Chernikov * May alter @tei to indicate insertion error / insert 1933a845e10SAlexander V. Chernikov * options. 1943a845e10SAlexander V. Chernikov * 1953a845e10SAlexander V. Chernikov * Returns 0 if operation can be performed/ 1963a845e10SAlexander V. Chernikov */ 1973a845e10SAlexander V. Chernikov static int 1983a845e10SAlexander V. Chernikov check_table_limit(struct table_config *tc, struct tentry_info *tei) 1993a845e10SAlexander V. Chernikov { 200b074b7bbSAlexander V. Chernikov 2013a845e10SAlexander V. Chernikov if (tc->limit == 0 || tc->count < tc->limit) 2023a845e10SAlexander V. Chernikov return (0); 2033a845e10SAlexander V. Chernikov 2043a845e10SAlexander V. Chernikov if ((tei->flags & TEI_FLAGS_UPDATE) == 0) { 2053a845e10SAlexander V. Chernikov /* Notify userland on error cause */ 2063a845e10SAlexander V. Chernikov tei->flags |= TEI_FLAGS_LIMIT; 2073a845e10SAlexander V. Chernikov return (EFBIG); 2083a845e10SAlexander V. Chernikov } 2093a845e10SAlexander V. Chernikov 2103a845e10SAlexander V. Chernikov /* 2113a845e10SAlexander V. Chernikov * We have UPDATE flag set. 2123a845e10SAlexander V. Chernikov * Permit updating record (if found), 2133a845e10SAlexander V. Chernikov * but restrict adding new one since we've 2143a845e10SAlexander V. Chernikov * already hit the limit. 2153a845e10SAlexander V. Chernikov */ 2163a845e10SAlexander V. Chernikov tei->flags |= TEI_FLAGS_DONTADD; 2173a845e10SAlexander V. Chernikov 2183a845e10SAlexander V. Chernikov return (0); 2193a845e10SAlexander V. Chernikov } 2203a845e10SAlexander V. Chernikov 2213a845e10SAlexander V. Chernikov /* 2221bc0d457SAlexander V. Chernikov * Convert algorithm callback return code into 2231bc0d457SAlexander V. Chernikov * one of pre-defined states known by userland. 2243a845e10SAlexander V. Chernikov */ 2251bc0d457SAlexander V. Chernikov static void 226867708f7SAlexander V. Chernikov store_tei_result(struct tentry_info *tei, int op, int error, uint32_t num) 2273b3a8eb9SGleb Smirnoff { 2281bc0d457SAlexander V. Chernikov int flag; 2293b3a8eb9SGleb Smirnoff 2301bc0d457SAlexander V. Chernikov flag = 0; 2311bc0d457SAlexander V. Chernikov 2321bc0d457SAlexander V. Chernikov switch (error) { 2331bc0d457SAlexander V. Chernikov case 0: 234867708f7SAlexander V. Chernikov if (op == OP_ADD && num != 0) 2351bc0d457SAlexander V. Chernikov flag = TEI_FLAGS_ADDED; 236867708f7SAlexander V. Chernikov if (op == OP_DEL) 2371bc0d457SAlexander V. Chernikov flag = TEI_FLAGS_DELETED; 2381bc0d457SAlexander V. Chernikov break; 2391bc0d457SAlexander V. Chernikov case ENOENT: 2401bc0d457SAlexander V. Chernikov flag = TEI_FLAGS_NOTFOUND; 2411bc0d457SAlexander V. Chernikov break; 2421bc0d457SAlexander V. Chernikov case EEXIST: 2431bc0d457SAlexander V. Chernikov flag = TEI_FLAGS_EXISTS; 2441bc0d457SAlexander V. Chernikov break; 2451bc0d457SAlexander V. Chernikov default: 2461bc0d457SAlexander V. Chernikov flag = TEI_FLAGS_ERROR; 2471bc0d457SAlexander V. Chernikov } 2481bc0d457SAlexander V. Chernikov 2491bc0d457SAlexander V. Chernikov tei->flags |= flag; 2501bc0d457SAlexander V. Chernikov } 2519f7d47b0SAlexander V. Chernikov 252f99fbf96SAlexander V. Chernikov /* 253f99fbf96SAlexander V. Chernikov * Creates and references table with default parameters. 254f99fbf96SAlexander V. Chernikov * Saves table config, algo and allocated kidx info @ptc, @pta and 255f99fbf96SAlexander V. Chernikov * @pkidx if non-zero. 256f99fbf96SAlexander V. Chernikov * Used for table auto-creation to support old binaries. 257f99fbf96SAlexander V. Chernikov * 258f99fbf96SAlexander V. Chernikov * Returns 0 on success. 259f99fbf96SAlexander V. Chernikov */ 2600468c5baSAlexander V. Chernikov static int 2610468c5baSAlexander V. Chernikov create_table_compat(struct ip_fw_chain *ch, struct tid_info *ti, 262867708f7SAlexander V. Chernikov uint16_t *pkidx) 2630468c5baSAlexander V. Chernikov { 2640468c5baSAlexander V. Chernikov ipfw_xtable_info xi; 2650468c5baSAlexander V. Chernikov int error; 2660468c5baSAlexander V. Chernikov 2670468c5baSAlexander V. Chernikov memset(&xi, 0, sizeof(xi)); 2680cba2b28SAlexander V. Chernikov /* Set default value mask for legacy clients */ 2690cba2b28SAlexander V. Chernikov xi.vmask = IPFW_VTYPE_LEGACY; 2700468c5baSAlexander V. Chernikov 271867708f7SAlexander V. Chernikov error = create_table_internal(ch, ti, NULL, &xi, pkidx, 1); 2720468c5baSAlexander V. Chernikov if (error != 0) 2730468c5baSAlexander V. Chernikov return (error); 2740468c5baSAlexander V. Chernikov 2750468c5baSAlexander V. Chernikov return (0); 2760468c5baSAlexander V. Chernikov } 2770468c5baSAlexander V. Chernikov 2789f7d47b0SAlexander V. Chernikov /* 2791bc0d457SAlexander V. Chernikov * Find and reference existing table optionally 2801bc0d457SAlexander V. Chernikov * creating new one. 2811bc0d457SAlexander V. Chernikov * 282867708f7SAlexander V. Chernikov * Saves found table config into @ptc. 283867708f7SAlexander V. Chernikov * Note function may drop/acquire UH_WLOCK. 2841bc0d457SAlexander V. Chernikov * Returns 0 if table was found/created and referenced 2851bc0d457SAlexander V. Chernikov * or non-zero return code. 2869f7d47b0SAlexander V. Chernikov */ 2871bc0d457SAlexander V. Chernikov static int 2881bc0d457SAlexander V. Chernikov find_ref_table(struct ip_fw_chain *ch, struct tid_info *ti, 2894dff4ae0SAlexander V. Chernikov struct tentry_info *tei, uint32_t count, int op, 290867708f7SAlexander V. Chernikov struct table_config **ptc) 2911bc0d457SAlexander V. Chernikov { 2921bc0d457SAlexander V. Chernikov struct namedobj_instance *ni; 2931bc0d457SAlexander V. Chernikov struct table_config *tc; 294867708f7SAlexander V. Chernikov uint16_t kidx; 2951bc0d457SAlexander V. Chernikov int error; 2961bc0d457SAlexander V. Chernikov 297867708f7SAlexander V. Chernikov IPFW_UH_WLOCK_ASSERT(ch); 2981bc0d457SAlexander V. Chernikov 2991bc0d457SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 3001bc0d457SAlexander V. Chernikov tc = NULL; 3019f7d47b0SAlexander V. Chernikov if ((tc = find_table(ni, ti)) != NULL) { 3029f7d47b0SAlexander V. Chernikov /* check table type */ 30374b22066SAlexander V. Chernikov if (tc->no.subtype != ti->type) 3043b3a8eb9SGleb Smirnoff return (EINVAL); 3053b3a8eb9SGleb Smirnoff 306867708f7SAlexander V. Chernikov if (tc->locked != 0) 3074f43138aSAlexander V. Chernikov return (EACCES); 3084f43138aSAlexander V. Chernikov 3094c0c07a5SAlexander V. Chernikov /* Try to exit early on limit hit */ 3104dff4ae0SAlexander V. Chernikov if (op == OP_ADD && count == 1 && 311867708f7SAlexander V. Chernikov check_table_limit(tc, tei) != 0) 3124c0c07a5SAlexander V. Chernikov return (EFBIG); 3134c0c07a5SAlexander V. Chernikov 314867708f7SAlexander V. Chernikov /* Reference and return */ 3159f7d47b0SAlexander V. Chernikov tc->no.refcnt++; 316867708f7SAlexander V. Chernikov *ptc = tc; 317867708f7SAlexander V. Chernikov return (0); 3189f7d47b0SAlexander V. Chernikov } 3193b3a8eb9SGleb Smirnoff 3204dff4ae0SAlexander V. Chernikov if (op == OP_DEL) 3211bc0d457SAlexander V. Chernikov return (ESRCH); 3221bc0d457SAlexander V. Chernikov 323a4641f4eSPedro F. Giffuni /* Compatibility mode: create new table for old clients */ 324db785d31SAlexander V. Chernikov if ((tei->flags & TEI_FLAGS_COMPAT) == 0) 325db785d31SAlexander V. Chernikov return (ESRCH); 3263b3a8eb9SGleb Smirnoff 327867708f7SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 328867708f7SAlexander V. Chernikov error = create_table_compat(ch, ti, &kidx); 329867708f7SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 330867708f7SAlexander V. Chernikov 331db785d31SAlexander V. Chernikov if (error != 0) 332db785d31SAlexander V. Chernikov return (error); 333db785d31SAlexander V. Chernikov 334867708f7SAlexander V. Chernikov tc = (struct table_config *)ipfw_objhash_lookup_kidx(ni, kidx); 335867708f7SAlexander V. Chernikov KASSERT(tc != NULL, ("create_table_compat returned bad idx %d", kidx)); 336db785d31SAlexander V. Chernikov 337867708f7SAlexander V. Chernikov /* OK, now we've got referenced table. */ 3381bc0d457SAlexander V. Chernikov *ptc = tc; 3391bc0d457SAlexander V. Chernikov return (0); 3401bc0d457SAlexander V. Chernikov } 3411bc0d457SAlexander V. Chernikov 3421bc0d457SAlexander V. Chernikov /* 343867708f7SAlexander V. Chernikov * Rolls back already @added to @tc entries using state array @ta_buf_m. 3441bc0d457SAlexander V. Chernikov * Assume the following layout: 3451bc0d457SAlexander V. Chernikov * 1) ADD state (ta_buf_m[0] ... t_buf_m[added - 1]) for handling update cases 3461bc0d457SAlexander V. Chernikov * 2) DEL state (ta_buf_m[count[ ... t_buf_m[count + added - 1]) 3471bc0d457SAlexander V. Chernikov * for storing deleted state 3481bc0d457SAlexander V. Chernikov */ 3491bc0d457SAlexander V. Chernikov static void 3501bc0d457SAlexander V. Chernikov rollback_added_entries(struct ip_fw_chain *ch, struct table_config *tc, 3511bc0d457SAlexander V. Chernikov struct table_info *tinfo, struct tentry_info *tei, caddr_t ta_buf_m, 3521bc0d457SAlexander V. Chernikov uint32_t count, uint32_t added) 3531bc0d457SAlexander V. Chernikov { 3541bc0d457SAlexander V. Chernikov struct table_algo *ta; 3551bc0d457SAlexander V. Chernikov struct tentry_info *ptei; 3561bc0d457SAlexander V. Chernikov caddr_t v, vv; 3571bc0d457SAlexander V. Chernikov size_t ta_buf_sz; 3581bc0d457SAlexander V. Chernikov int error, i; 3591bc0d457SAlexander V. Chernikov uint32_t num; 3601bc0d457SAlexander V. Chernikov 3611bc0d457SAlexander V. Chernikov IPFW_UH_WLOCK_ASSERT(ch); 3621bc0d457SAlexander V. Chernikov 3631bc0d457SAlexander V. Chernikov ta = tc->ta; 3643a845e10SAlexander V. Chernikov ta_buf_sz = ta->ta_buf_size; 3651bc0d457SAlexander V. Chernikov v = ta_buf_m; 3661bc0d457SAlexander V. Chernikov vv = v + count * ta_buf_sz; 3671bc0d457SAlexander V. Chernikov for (i = 0; i < added; i++, v += ta_buf_sz, vv += ta_buf_sz) { 3681bc0d457SAlexander V. Chernikov ptei = &tei[i]; 3691bc0d457SAlexander V. Chernikov if ((ptei->flags & TEI_FLAGS_UPDATED) != 0) { 3701bc0d457SAlexander V. Chernikov 3711bc0d457SAlexander V. Chernikov /* 3721bc0d457SAlexander V. Chernikov * We have old value stored by previous 3731bc0d457SAlexander V. Chernikov * call in @ptei->value. Do add once again 3741bc0d457SAlexander V. Chernikov * to restore it. 3751bc0d457SAlexander V. Chernikov */ 3761bc0d457SAlexander V. Chernikov error = ta->add(tc->astate, tinfo, ptei, v, &num); 3771bc0d457SAlexander V. Chernikov KASSERT(error == 0, ("rollback UPDATE fail")); 3781bc0d457SAlexander V. Chernikov KASSERT(num == 0, ("rollback UPDATE fail2")); 3791bc0d457SAlexander V. Chernikov continue; 3801bc0d457SAlexander V. Chernikov } 3811bc0d457SAlexander V. Chernikov 3821bc0d457SAlexander V. Chernikov error = ta->prepare_del(ch, ptei, vv); 3831bc0d457SAlexander V. Chernikov KASSERT(error == 0, ("pre-rollback INSERT failed")); 3841bc0d457SAlexander V. Chernikov error = ta->del(tc->astate, tinfo, ptei, vv, &num); 3851bc0d457SAlexander V. Chernikov KASSERT(error == 0, ("rollback INSERT failed")); 3861bc0d457SAlexander V. Chernikov tc->count -= num; 3871bc0d457SAlexander V. Chernikov } 3881bc0d457SAlexander V. Chernikov } 3891bc0d457SAlexander V. Chernikov 3901bc0d457SAlexander V. Chernikov /* 3911bc0d457SAlexander V. Chernikov * Prepares add/del state for all @count entries in @tei. 3921bc0d457SAlexander V. Chernikov * Uses either stack buffer (@ta_buf) or allocates a new one. 3931bc0d457SAlexander V. Chernikov * Stores pointer to allocated buffer back to @ta_buf. 3941bc0d457SAlexander V. Chernikov * 3951bc0d457SAlexander V. Chernikov * Returns 0 on success. 3961bc0d457SAlexander V. Chernikov */ 3971bc0d457SAlexander V. Chernikov static int 3981bc0d457SAlexander V. Chernikov prepare_batch_buffer(struct ip_fw_chain *ch, struct table_algo *ta, 3994dff4ae0SAlexander V. Chernikov struct tentry_info *tei, uint32_t count, int op, caddr_t *ta_buf) 4001bc0d457SAlexander V. Chernikov { 4011bc0d457SAlexander V. Chernikov caddr_t ta_buf_m, v; 4021bc0d457SAlexander V. Chernikov size_t ta_buf_sz, sz; 4031bc0d457SAlexander V. Chernikov struct tentry_info *ptei; 4041bc0d457SAlexander V. Chernikov int error, i; 4051bc0d457SAlexander V. Chernikov 4061bc0d457SAlexander V. Chernikov error = 0; 4071bc0d457SAlexander V. Chernikov ta_buf_sz = ta->ta_buf_size; 4083a845e10SAlexander V. Chernikov if (count == 1) { 409f621c2cdSMaxim Konovalov /* Single add/delete, use on-stack buffer */ 4101bc0d457SAlexander V. Chernikov memset(*ta_buf, 0, TA_BUF_SZ); 4111bc0d457SAlexander V. Chernikov ta_buf_m = *ta_buf; 4123a845e10SAlexander V. Chernikov } else { 4133a845e10SAlexander V. Chernikov 4143a845e10SAlexander V. Chernikov /* 4151bc0d457SAlexander V. Chernikov * Multiple adds/deletes, allocate larger buffer 4161bc0d457SAlexander V. Chernikov * 4171bc0d457SAlexander V. Chernikov * Note we need 2xcount buffer for add case: 4181bc0d457SAlexander V. Chernikov * we have hold both ADD state 4193a845e10SAlexander V. Chernikov * and DELETE state (this may be needed 4203a845e10SAlexander V. Chernikov * if we need to rollback all changes) 4213a845e10SAlexander V. Chernikov */ 4221bc0d457SAlexander V. Chernikov sz = count * ta_buf_sz; 4234dff4ae0SAlexander V. Chernikov ta_buf_m = malloc((op == OP_ADD) ? sz * 2 : sz, M_TEMP, 4243a845e10SAlexander V. Chernikov M_WAITOK | M_ZERO); 4253a845e10SAlexander V. Chernikov } 4261bc0d457SAlexander V. Chernikov 4273a845e10SAlexander V. Chernikov v = ta_buf_m; 4283a845e10SAlexander V. Chernikov for (i = 0; i < count; i++, v += ta_buf_sz) { 4291bc0d457SAlexander V. Chernikov ptei = &tei[i]; 4304dff4ae0SAlexander V. Chernikov error = (op == OP_ADD) ? 4311bc0d457SAlexander V. Chernikov ta->prepare_add(ch, ptei, v) : ta->prepare_del(ch, ptei, v); 4323a845e10SAlexander V. Chernikov 4333a845e10SAlexander V. Chernikov /* 4343a845e10SAlexander V. Chernikov * Some syntax error (incorrect mask, or address, or 4353a845e10SAlexander V. Chernikov * anything). Return error regardless of atomicity 4363a845e10SAlexander V. Chernikov * settings. 4373a845e10SAlexander V. Chernikov */ 438db785d31SAlexander V. Chernikov if (error != 0) 4391bc0d457SAlexander V. Chernikov break; 4403a845e10SAlexander V. Chernikov } 4413b3a8eb9SGleb Smirnoff 4421bc0d457SAlexander V. Chernikov *ta_buf = ta_buf_m; 4431bc0d457SAlexander V. Chernikov return (error); 4441bc0d457SAlexander V. Chernikov } 4451bc0d457SAlexander V. Chernikov 4461bc0d457SAlexander V. Chernikov /* 4471bc0d457SAlexander V. Chernikov * Flushes allocated state for each @count entries in @tei. 4481bc0d457SAlexander V. Chernikov * Frees @ta_buf_m if differs from stack buffer @ta_buf. 4491bc0d457SAlexander V. Chernikov */ 4501bc0d457SAlexander V. Chernikov static void 4511bc0d457SAlexander V. Chernikov flush_batch_buffer(struct ip_fw_chain *ch, struct table_algo *ta, 452867708f7SAlexander V. Chernikov struct tentry_info *tei, uint32_t count, int rollback, 4531bc0d457SAlexander V. Chernikov caddr_t ta_buf_m, caddr_t ta_buf) 4541bc0d457SAlexander V. Chernikov { 4551bc0d457SAlexander V. Chernikov caddr_t v; 4560cba2b28SAlexander V. Chernikov struct tentry_info *ptei; 4571bc0d457SAlexander V. Chernikov size_t ta_buf_sz; 4581bc0d457SAlexander V. Chernikov int i; 4591bc0d457SAlexander V. Chernikov 4601bc0d457SAlexander V. Chernikov ta_buf_sz = ta->ta_buf_size; 4611bc0d457SAlexander V. Chernikov 4621bc0d457SAlexander V. Chernikov /* Run cleaning callback anyway */ 4631bc0d457SAlexander V. Chernikov v = ta_buf_m; 4640cba2b28SAlexander V. Chernikov for (i = 0; i < count; i++, v += ta_buf_sz) { 4650cba2b28SAlexander V. Chernikov ptei = &tei[i]; 4660cba2b28SAlexander V. Chernikov ta->flush_entry(ch, ptei, v); 4670cba2b28SAlexander V. Chernikov if (ptei->ptv != NULL) { 4680cba2b28SAlexander V. Chernikov free(ptei->ptv, M_IPFW); 4690cba2b28SAlexander V. Chernikov ptei->ptv = NULL; 4700cba2b28SAlexander V. Chernikov } 4710cba2b28SAlexander V. Chernikov } 4721bc0d457SAlexander V. Chernikov 4731bc0d457SAlexander V. Chernikov /* Clean up "deleted" state in case of rollback */ 4741bc0d457SAlexander V. Chernikov if (rollback != 0) { 4751bc0d457SAlexander V. Chernikov v = ta_buf_m + count * ta_buf_sz; 4761bc0d457SAlexander V. Chernikov for (i = 0; i < count; i++, v += ta_buf_sz) 4771bc0d457SAlexander V. Chernikov ta->flush_entry(ch, &tei[i], v); 4781bc0d457SAlexander V. Chernikov } 4791bc0d457SAlexander V. Chernikov 4801bc0d457SAlexander V. Chernikov if (ta_buf_m != ta_buf) 4811bc0d457SAlexander V. Chernikov free(ta_buf_m, M_TEMP); 4821bc0d457SAlexander V. Chernikov } 4831bc0d457SAlexander V. Chernikov 48471af39bfSAlexander V. Chernikov 48571af39bfSAlexander V. Chernikov static void 48671af39bfSAlexander V. Chernikov rollback_add_entry(void *object, struct op_state *_state) 48771af39bfSAlexander V. Chernikov { 48871af39bfSAlexander V. Chernikov struct ip_fw_chain *ch; 48971af39bfSAlexander V. Chernikov struct tableop_state *ts; 49071af39bfSAlexander V. Chernikov 49171af39bfSAlexander V. Chernikov ts = (struct tableop_state *)_state; 49271af39bfSAlexander V. Chernikov 49371af39bfSAlexander V. Chernikov if (ts->tc != object && ts->ch != object) 49471af39bfSAlexander V. Chernikov return; 49571af39bfSAlexander V. Chernikov 49671af39bfSAlexander V. Chernikov ch = ts->ch; 49771af39bfSAlexander V. Chernikov 49871af39bfSAlexander V. Chernikov IPFW_UH_WLOCK_ASSERT(ch); 49971af39bfSAlexander V. Chernikov 50071af39bfSAlexander V. Chernikov /* Call specifid unlockers */ 50171af39bfSAlexander V. Chernikov rollback_table_values(ts); 50271af39bfSAlexander V. Chernikov 50371af39bfSAlexander V. Chernikov /* Indicate we've called */ 50471af39bfSAlexander V. Chernikov ts->modified = 1; 50571af39bfSAlexander V. Chernikov } 50671af39bfSAlexander V. Chernikov 5071bc0d457SAlexander V. Chernikov /* 5081bc0d457SAlexander V. Chernikov * Adds/updates one or more entries in table @ti. 50971af39bfSAlexander V. Chernikov * 51071af39bfSAlexander V. Chernikov * Function may drop/reacquire UH wlock multiple times due to 51171af39bfSAlexander V. Chernikov * items alloc, algorithm callbacks (check_space), value linkage 51271af39bfSAlexander V. Chernikov * (new values, value storage realloc), etc.. 51371af39bfSAlexander V. Chernikov * Other processes like other adds (which may involve storage resize), 51471af39bfSAlexander V. Chernikov * table swaps (which changes table data and may change algo type), 51571af39bfSAlexander V. Chernikov * table modify (which may change value mask) may be executed 51671af39bfSAlexander V. Chernikov * simultaneously so we need to deal with it. 51771af39bfSAlexander V. Chernikov * 51871af39bfSAlexander V. Chernikov * The following approach was implemented: 51971af39bfSAlexander V. Chernikov * we have per-chain linked list, protected with UH lock. 52071af39bfSAlexander V. Chernikov * add_table_entry prepares special on-stack structure wthich is passed 52171af39bfSAlexander V. Chernikov * to its descendants. Users add this structure to this list before unlock. 52271af39bfSAlexander V. Chernikov * After performing needed operations and acquiring UH lock back, each user 52371af39bfSAlexander V. Chernikov * checks if structure has changed. If true, it rolls local state back and 52471af39bfSAlexander V. Chernikov * returns without error to the caller. 52571af39bfSAlexander V. Chernikov * add_table_entry() on its own checks if structure has changed and restarts 52671af39bfSAlexander V. Chernikov * its operation from the beginning (goto restart). 52771af39bfSAlexander V. Chernikov * 52871af39bfSAlexander V. Chernikov * Functions which are modifying fields of interest (currently 52971af39bfSAlexander V. Chernikov * resize_shared_value_storage() and swap_tables() ) 53071af39bfSAlexander V. Chernikov * traverses given list while holding UH lock immediately before 53171af39bfSAlexander V. Chernikov * performing their operations calling function provided be list entry 53271af39bfSAlexander V. Chernikov * ( currently rollback_add_entry ) which performs rollback for all necessary 53371af39bfSAlexander V. Chernikov * state and sets appropriate values in structure indicating rollback 53471af39bfSAlexander V. Chernikov * has happened. 53571af39bfSAlexander V. Chernikov * 53671af39bfSAlexander V. Chernikov * Algo interaction: 5370468c5baSAlexander V. Chernikov * Function references @ti first to ensure table won't 5380468c5baSAlexander V. Chernikov * disappear or change its type. 5390468c5baSAlexander V. Chernikov * After that, prepare_add callback is called for each @tei entry. 5400468c5baSAlexander V. Chernikov * Next, we try to add each entry under UH+WHLOCK 5410468c5baSAlexander V. Chernikov * using add() callback. 5420468c5baSAlexander V. Chernikov * Finally, we free all state by calling flush_entry callback 5430468c5baSAlexander V. Chernikov * for each @tei. 5441bc0d457SAlexander V. Chernikov * 5451bc0d457SAlexander V. Chernikov * Returns 0 on success. 5461bc0d457SAlexander V. Chernikov */ 5471bc0d457SAlexander V. Chernikov int 5481bc0d457SAlexander V. Chernikov add_table_entry(struct ip_fw_chain *ch, struct tid_info *ti, 5491bc0d457SAlexander V. Chernikov struct tentry_info *tei, uint8_t flags, uint32_t count) 5501bc0d457SAlexander V. Chernikov { 5511bc0d457SAlexander V. Chernikov struct table_config *tc; 5521bc0d457SAlexander V. Chernikov struct table_algo *ta; 5531bc0d457SAlexander V. Chernikov uint16_t kidx; 5541bc0d457SAlexander V. Chernikov int error, first_error, i, rollback; 5551bc0d457SAlexander V. Chernikov uint32_t num, numadd; 5561bc0d457SAlexander V. Chernikov struct tentry_info *ptei; 5570cba2b28SAlexander V. Chernikov struct tableop_state ts; 5581bc0d457SAlexander V. Chernikov char ta_buf[TA_BUF_SZ]; 5591bc0d457SAlexander V. Chernikov caddr_t ta_buf_m, v; 5601bc0d457SAlexander V. Chernikov 5610cba2b28SAlexander V. Chernikov memset(&ts, 0, sizeof(ts)); 562d4e1b515SAlexander V. Chernikov ta = NULL; 5630cba2b28SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 5640cba2b28SAlexander V. Chernikov 5651bc0d457SAlexander V. Chernikov /* 5661bc0d457SAlexander V. Chernikov * Find and reference existing table. 5671bc0d457SAlexander V. Chernikov */ 5680cba2b28SAlexander V. Chernikov restart: 5690cba2b28SAlexander V. Chernikov if (ts.modified != 0) { 5708ebca97fSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 5710cba2b28SAlexander V. Chernikov flush_batch_buffer(ch, ta, tei, count, rollback, 5720cba2b28SAlexander V. Chernikov ta_buf_m, ta_buf); 5730cba2b28SAlexander V. Chernikov memset(&ts, 0, sizeof(ts)); 5748ebca97fSAlexander V. Chernikov ta = NULL; 5758ebca97fSAlexander V. Chernikov IPFW_UH_WLOCK(ch); 5760cba2b28SAlexander V. Chernikov } 5778ebca97fSAlexander V. Chernikov 578867708f7SAlexander V. Chernikov error = find_ref_table(ch, ti, tei, count, OP_ADD, &tc); 579867708f7SAlexander V. Chernikov if (error != 0) { 580867708f7SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 5811bc0d457SAlexander V. Chernikov return (error); 582867708f7SAlexander V. Chernikov } 583867708f7SAlexander V. Chernikov ta = tc->ta; 584fb4b37a3SAlexander V. Chernikov 585fb4b37a3SAlexander V. Chernikov /* Fill in tablestate */ 5860cba2b28SAlexander V. Chernikov ts.ch = ch; 58771af39bfSAlexander V. Chernikov ts.opstate.func = rollback_add_entry; 5880cba2b28SAlexander V. Chernikov ts.tc = tc; 5890cba2b28SAlexander V. Chernikov ts.vshared = tc->vshared; 5900cba2b28SAlexander V. Chernikov ts.vmask = tc->vmask; 5910cba2b28SAlexander V. Chernikov ts.ta = ta; 5920cba2b28SAlexander V. Chernikov ts.tei = tei; 5930cba2b28SAlexander V. Chernikov ts.count = count; 5940cba2b28SAlexander V. Chernikov rollback = 0; 5950cba2b28SAlexander V. Chernikov add_toperation_state(ch, &ts); 596867708f7SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 5971bc0d457SAlexander V. Chernikov 5981bc0d457SAlexander V. Chernikov /* Allocate memory and prepare record(s) */ 5991bc0d457SAlexander V. Chernikov /* Pass stack buffer by default */ 6001bc0d457SAlexander V. Chernikov ta_buf_m = ta_buf; 6014dff4ae0SAlexander V. Chernikov error = prepare_batch_buffer(ch, ta, tei, count, OP_ADD, &ta_buf_m); 6021bc0d457SAlexander V. Chernikov 603b074b7bbSAlexander V. Chernikov IPFW_UH_WLOCK(ch); 604b45fa3faSAlexander V. Chernikov del_toperation_state(ch, &ts); 605c8d5d308SAlexander V. Chernikov /* Drop reference we've used in first search */ 606c8d5d308SAlexander V. Chernikov tc->no.refcnt--; 607c8d5d308SAlexander V. Chernikov 608b45fa3faSAlexander V. Chernikov /* Check prepare_batch_buffer() error */ 609b45fa3faSAlexander V. Chernikov if (error != 0) 610b45fa3faSAlexander V. Chernikov goto cleanup; 611b45fa3faSAlexander V. Chernikov 612b6ee846eSAlexander V. Chernikov /* 6130cba2b28SAlexander V. Chernikov * Check if table swap has happened. 6140cba2b28SAlexander V. Chernikov * (so table algo might be changed). 6150cba2b28SAlexander V. Chernikov * Restart operation to achieve consistent behavior. 616b6ee846eSAlexander V. Chernikov */ 6170cba2b28SAlexander V. Chernikov if (ts.modified != 0) 6180cba2b28SAlexander V. Chernikov goto restart; 619b6ee846eSAlexander V. Chernikov 620c8d5d308SAlexander V. Chernikov /* 6210cba2b28SAlexander V. Chernikov * Link all values values to shared/per-table value array. 6220cba2b28SAlexander V. Chernikov * 6230cba2b28SAlexander V. Chernikov * May release/reacquire UH_WLOCK. 624c8d5d308SAlexander V. Chernikov */ 6250cba2b28SAlexander V. Chernikov error = ipfw_link_table_values(ch, &ts); 6260cba2b28SAlexander V. Chernikov if (error != 0) 627c8d5d308SAlexander V. Chernikov goto cleanup; 6280cba2b28SAlexander V. Chernikov if (ts.modified != 0) 6290cba2b28SAlexander V. Chernikov goto restart; 6300cba2b28SAlexander V. Chernikov 6310cba2b28SAlexander V. Chernikov /* 6320cba2b28SAlexander V. Chernikov * Ensure we are able to add all entries without additional 6330cba2b28SAlexander V. Chernikov * memory allocations. May release/reacquire UH_WLOCK. 6340cba2b28SAlexander V. Chernikov */ 6350cba2b28SAlexander V. Chernikov kidx = tc->no.kidx; 6360cba2b28SAlexander V. Chernikov error = check_table_space(ch, &ts, tc, KIDX_TO_TI(ch, kidx), count); 6370cba2b28SAlexander V. Chernikov if (error != 0) 6380cba2b28SAlexander V. Chernikov goto cleanup; 6390cba2b28SAlexander V. Chernikov if (ts.modified != 0) 6400cba2b28SAlexander V. Chernikov goto restart; 641c8d5d308SAlexander V. Chernikov 6423a845e10SAlexander V. Chernikov /* We've got valid table in @tc. Let's try to add data */ 6439f7d47b0SAlexander V. Chernikov kidx = tc->no.kidx; 6449f7d47b0SAlexander V. Chernikov ta = tc->ta; 6453a845e10SAlexander V. Chernikov numadd = 0; 6463a845e10SAlexander V. Chernikov first_error = 0; 6479f7d47b0SAlexander V. Chernikov 648b074b7bbSAlexander V. Chernikov IPFW_WLOCK(ch); 6493a845e10SAlexander V. Chernikov 6503a845e10SAlexander V. Chernikov v = ta_buf_m; 6511bc0d457SAlexander V. Chernikov for (i = 0; i < count; i++, v += ta->ta_buf_size) { 6523a845e10SAlexander V. Chernikov ptei = &tei[i]; 6533a845e10SAlexander V. Chernikov num = 0; 6543a845e10SAlexander V. Chernikov /* check limit before adding */ 6553a845e10SAlexander V. Chernikov if ((error = check_table_limit(tc, ptei)) == 0) { 6563a845e10SAlexander V. Chernikov error = ta->add(tc->astate, KIDX_TO_TI(ch, kidx), 6573a845e10SAlexander V. Chernikov ptei, v, &num); 6583a845e10SAlexander V. Chernikov /* Set status flag to inform userland */ 659867708f7SAlexander V. Chernikov store_tei_result(ptei, OP_ADD, error, num); 6603a845e10SAlexander V. Chernikov } 6613a845e10SAlexander V. Chernikov if (error == 0) { 6623a845e10SAlexander V. Chernikov /* Update number of records to ease limit checking */ 6633a845e10SAlexander V. Chernikov tc->count += num; 6643a845e10SAlexander V. Chernikov numadd += num; 6653a845e10SAlexander V. Chernikov continue; 6663a845e10SAlexander V. Chernikov } 6673a845e10SAlexander V. Chernikov 6683a845e10SAlexander V. Chernikov if (first_error == 0) 6693a845e10SAlexander V. Chernikov first_error = error; 6703a845e10SAlexander V. Chernikov 6713a845e10SAlexander V. Chernikov /* 6723a845e10SAlexander V. Chernikov * Some error have happened. Check our atomicity 6733a845e10SAlexander V. Chernikov * settings: continue if atomicity is not required, 6743a845e10SAlexander V. Chernikov * rollback changes otherwise. 6753a845e10SAlexander V. Chernikov */ 6763a845e10SAlexander V. Chernikov if ((flags & IPFW_CTF_ATOMIC) == 0) 6773a845e10SAlexander V. Chernikov continue; 6783a845e10SAlexander V. Chernikov 6791bc0d457SAlexander V. Chernikov rollback_added_entries(ch, tc, KIDX_TO_TI(ch, kidx), 6801bc0d457SAlexander V. Chernikov tei, ta_buf_m, count, i); 6810cba2b28SAlexander V. Chernikov 6820cba2b28SAlexander V. Chernikov rollback = 1; 6833a845e10SAlexander V. Chernikov break; 6843a845e10SAlexander V. Chernikov } 6853a845e10SAlexander V. Chernikov 6863b3a8eb9SGleb Smirnoff IPFW_WUNLOCK(ch); 6879f7d47b0SAlexander V. Chernikov 68871af39bfSAlexander V. Chernikov ipfw_garbage_table_values(ch, tc, tei, count, rollback); 6890cba2b28SAlexander V. Chernikov 690b6ee846eSAlexander V. Chernikov /* Permit post-add algorithm grow/rehash. */ 6913a845e10SAlexander V. Chernikov if (numadd != 0) 6920cba2b28SAlexander V. Chernikov check_table_space(ch, NULL, tc, KIDX_TO_TI(ch, kidx), 0); 693b074b7bbSAlexander V. Chernikov 6943a845e10SAlexander V. Chernikov /* Return first error to user, if any */ 6953a845e10SAlexander V. Chernikov error = first_error; 6963a845e10SAlexander V. Chernikov 6973a845e10SAlexander V. Chernikov cleanup: 6980cba2b28SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 6990cba2b28SAlexander V. Chernikov 700867708f7SAlexander V. Chernikov flush_batch_buffer(ch, ta, tei, count, rollback, ta_buf_m, ta_buf); 701b074b7bbSAlexander V. Chernikov 7029f7d47b0SAlexander V. Chernikov return (error); 7033b3a8eb9SGleb Smirnoff } 7043b3a8eb9SGleb Smirnoff 7053a845e10SAlexander V. Chernikov /* 7063a845e10SAlexander V. Chernikov * Deletes one or more entries in table @ti. 7073a845e10SAlexander V. Chernikov * 7083a845e10SAlexander V. Chernikov * Returns 0 on success. 7093a845e10SAlexander V. Chernikov */ 7103b3a8eb9SGleb Smirnoff int 7111832a7b3SAlexander V. Chernikov del_table_entry(struct ip_fw_chain *ch, struct tid_info *ti, 7123a845e10SAlexander V. Chernikov struct tentry_info *tei, uint8_t flags, uint32_t count) 7133b3a8eb9SGleb Smirnoff { 714b074b7bbSAlexander V. Chernikov struct table_config *tc; 7159f7d47b0SAlexander V. Chernikov struct table_algo *ta; 7163a845e10SAlexander V. Chernikov struct tentry_info *ptei; 717b074b7bbSAlexander V. Chernikov uint16_t kidx; 7183a845e10SAlexander V. Chernikov int error, first_error, i; 7193a845e10SAlexander V. Chernikov uint32_t num, numdel; 720b6ee846eSAlexander V. Chernikov char ta_buf[TA_BUF_SZ]; 7213a845e10SAlexander V. Chernikov caddr_t ta_buf_m, v; 7223b3a8eb9SGleb Smirnoff 723db785d31SAlexander V. Chernikov /* 7241bc0d457SAlexander V. Chernikov * Find and reference existing table. 725db785d31SAlexander V. Chernikov */ 726867708f7SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 727867708f7SAlexander V. Chernikov error = find_ref_table(ch, ti, tei, count, OP_DEL, &tc); 728867708f7SAlexander V. Chernikov if (error != 0) { 729867708f7SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 730db785d31SAlexander V. Chernikov return (error); 731867708f7SAlexander V. Chernikov } 732867708f7SAlexander V. Chernikov ta = tc->ta; 733867708f7SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 7343a845e10SAlexander V. Chernikov 73535e1bbd0SAlexander V. Chernikov /* Allocate memory and prepare record(s) */ 7361bc0d457SAlexander V. Chernikov /* Pass stack buffer by default */ 7373a845e10SAlexander V. Chernikov ta_buf_m = ta_buf; 7384dff4ae0SAlexander V. Chernikov error = prepare_batch_buffer(ch, ta, tei, count, OP_DEL, &ta_buf_m); 7393a845e10SAlexander V. Chernikov if (error != 0) 7403a845e10SAlexander V. Chernikov goto cleanup; 7419f7d47b0SAlexander V. Chernikov 7423a845e10SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 7433a845e10SAlexander V. Chernikov 7443a845e10SAlexander V. Chernikov /* Drop reference we've used in first search */ 7453a845e10SAlexander V. Chernikov tc->no.refcnt--; 7463a845e10SAlexander V. Chernikov 747c8d5d308SAlexander V. Chernikov /* 748c8d5d308SAlexander V. Chernikov * Check if table algo is still the same. 749c8d5d308SAlexander V. Chernikov * (changed ta may be the result of table swap). 750c8d5d308SAlexander V. Chernikov */ 751c8d5d308SAlexander V. Chernikov if (ta != tc->ta) { 752c8d5d308SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 753c8d5d308SAlexander V. Chernikov error = EINVAL; 754c8d5d308SAlexander V. Chernikov goto cleanup; 755c8d5d308SAlexander V. Chernikov } 756c8d5d308SAlexander V. Chernikov 757b074b7bbSAlexander V. Chernikov kidx = tc->no.kidx; 7583a845e10SAlexander V. Chernikov numdel = 0; 7593a845e10SAlexander V. Chernikov first_error = 0; 760b074b7bbSAlexander V. Chernikov 761b074b7bbSAlexander V. Chernikov IPFW_WLOCK(ch); 7623a845e10SAlexander V. Chernikov v = ta_buf_m; 7631bc0d457SAlexander V. Chernikov for (i = 0; i < count; i++, v += ta->ta_buf_size) { 7643a845e10SAlexander V. Chernikov ptei = &tei[i]; 7653a845e10SAlexander V. Chernikov num = 0; 7663a845e10SAlexander V. Chernikov error = ta->del(tc->astate, KIDX_TO_TI(ch, kidx), ptei, v, 7673a845e10SAlexander V. Chernikov &num); 7683a845e10SAlexander V. Chernikov /* Save state for userland */ 769867708f7SAlexander V. Chernikov store_tei_result(ptei, OP_DEL, error, num); 7703a845e10SAlexander V. Chernikov if (error != 0 && first_error == 0) 7713a845e10SAlexander V. Chernikov first_error = error; 7723a845e10SAlexander V. Chernikov tc->count -= num; 7733a845e10SAlexander V. Chernikov numdel += num; 7743a845e10SAlexander V. Chernikov } 7753b3a8eb9SGleb Smirnoff IPFW_WUNLOCK(ch); 7763b3a8eb9SGleb Smirnoff 7770cba2b28SAlexander V. Chernikov /* Unlink non-used values */ 77871af39bfSAlexander V. Chernikov ipfw_garbage_table_values(ch, tc, tei, count, 0); 7790cba2b28SAlexander V. Chernikov 7803a845e10SAlexander V. Chernikov if (numdel != 0) { 781b6ee846eSAlexander V. Chernikov /* Run post-del hook to permit shrinking */ 7820cba2b28SAlexander V. Chernikov check_table_space(ch, NULL, tc, KIDX_TO_TI(ch, kidx), 0); 783b6ee846eSAlexander V. Chernikov } 784b074b7bbSAlexander V. Chernikov 7859f7d47b0SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 7863b3a8eb9SGleb Smirnoff 7873a845e10SAlexander V. Chernikov /* Return first error to user, if any */ 7883a845e10SAlexander V. Chernikov error = first_error; 7893a845e10SAlexander V. Chernikov 7903a845e10SAlexander V. Chernikov cleanup: 791867708f7SAlexander V. Chernikov flush_batch_buffer(ch, ta, tei, count, 0, ta_buf_m, ta_buf); 792ac35ff17SAlexander V. Chernikov 793ac35ff17SAlexander V. Chernikov return (error); 794ac35ff17SAlexander V. Chernikov } 795ac35ff17SAlexander V. Chernikov 796db785d31SAlexander V. Chernikov /* 797b6ee846eSAlexander V. Chernikov * Ensure that table @tc has enough space to add @count entries without 798b6ee846eSAlexander V. Chernikov * need for reallocation. 799db785d31SAlexander V. Chernikov * 800db785d31SAlexander V. Chernikov * Callbacks order: 801301290bcSAlexander V. Chernikov * 0) need_modify() (UH_WLOCK) - checks if @count items can be added w/o resize. 802b6ee846eSAlexander V. Chernikov * 803db785d31SAlexander V. Chernikov * 1) alloc_modify (no locks, M_WAITOK) - alloc new state based on @pflags. 804db785d31SAlexander V. Chernikov * 2) prepare_modifyt (UH_WLOCK) - copy old data into new storage 805db785d31SAlexander V. Chernikov * 3) modify (UH_WLOCK + WLOCK) - switch pointers 806b6ee846eSAlexander V. Chernikov * 4) flush_modify (UH_WLOCK) - free state, if needed 807b6ee846eSAlexander V. Chernikov * 808b6ee846eSAlexander V. Chernikov * Returns 0 on success. 809db785d31SAlexander V. Chernikov */ 810db785d31SAlexander V. Chernikov static int 8110cba2b28SAlexander V. Chernikov check_table_space(struct ip_fw_chain *ch, struct tableop_state *ts, 8120cba2b28SAlexander V. Chernikov struct table_config *tc, struct table_info *ti, uint32_t count) 813db785d31SAlexander V. Chernikov { 814b6ee846eSAlexander V. Chernikov struct table_algo *ta; 815b6ee846eSAlexander V. Chernikov uint64_t pflags; 816b6ee846eSAlexander V. Chernikov char ta_buf[TA_BUF_SZ]; 817db785d31SAlexander V. Chernikov int error; 818db785d31SAlexander V. Chernikov 819b6ee846eSAlexander V. Chernikov IPFW_UH_WLOCK_ASSERT(ch); 820db785d31SAlexander V. Chernikov 821b6ee846eSAlexander V. Chernikov error = 0; 822b6ee846eSAlexander V. Chernikov ta = tc->ta; 823fd0869d5SAlexander V. Chernikov if (ta->need_modify == NULL) 824fd0869d5SAlexander V. Chernikov return (0); 825fd0869d5SAlexander V. Chernikov 826b6ee846eSAlexander V. Chernikov /* Acquire reference not to loose @tc between locks/unlocks */ 827b6ee846eSAlexander V. Chernikov tc->no.refcnt++; 828db785d31SAlexander V. Chernikov 829db785d31SAlexander V. Chernikov /* 830b6ee846eSAlexander V. Chernikov * TODO: think about avoiding race between large add/large delete 831b6ee846eSAlexander V. Chernikov * operation on algorithm which implements shrinking along with 832b6ee846eSAlexander V. Chernikov * growing. 833db785d31SAlexander V. Chernikov */ 834b6ee846eSAlexander V. Chernikov while (true) { 835b6ee846eSAlexander V. Chernikov pflags = 0; 836301290bcSAlexander V. Chernikov if (ta->need_modify(tc->astate, ti, count, &pflags) == 0) { 83735e1bbd0SAlexander V. Chernikov error = 0; 83835e1bbd0SAlexander V. Chernikov break; 839b6ee846eSAlexander V. Chernikov } 840db785d31SAlexander V. Chernikov 841b6ee846eSAlexander V. Chernikov /* We have to shrink/grow table */ 8420cba2b28SAlexander V. Chernikov if (ts != NULL) 8430cba2b28SAlexander V. Chernikov add_toperation_state(ch, ts); 844b6ee846eSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 845b6ee846eSAlexander V. Chernikov 846301290bcSAlexander V. Chernikov memset(&ta_buf, 0, sizeof(ta_buf)); 8470cba2b28SAlexander V. Chernikov error = ta->prepare_mod(ta_buf, &pflags); 848b6ee846eSAlexander V. Chernikov 849b6ee846eSAlexander V. Chernikov IPFW_UH_WLOCK(ch); 8500cba2b28SAlexander V. Chernikov if (ts != NULL) 8510cba2b28SAlexander V. Chernikov del_toperation_state(ch, ts); 8520cba2b28SAlexander V. Chernikov 8530cba2b28SAlexander V. Chernikov if (error != 0) 8540cba2b28SAlexander V. Chernikov break; 8550cba2b28SAlexander V. Chernikov 8560cba2b28SAlexander V. Chernikov if (ts != NULL && ts->modified != 0) { 8570cba2b28SAlexander V. Chernikov 8580cba2b28SAlexander V. Chernikov /* 8590cba2b28SAlexander V. Chernikov * Swap operation has happened 8600cba2b28SAlexander V. Chernikov * so we're currently operating on other 8610cba2b28SAlexander V. Chernikov * table data. Stop doing this. 8620cba2b28SAlexander V. Chernikov */ 8630cba2b28SAlexander V. Chernikov ta->flush_mod(ta_buf); 8640cba2b28SAlexander V. Chernikov break; 8650cba2b28SAlexander V. Chernikov } 866b6ee846eSAlexander V. Chernikov 867b6ee846eSAlexander V. Chernikov /* Check if we still need to alter table */ 868b6ee846eSAlexander V. Chernikov ti = KIDX_TO_TI(ch, tc->no.kidx); 869301290bcSAlexander V. Chernikov if (ta->need_modify(tc->astate, ti, count, &pflags) == 0) { 870301290bcSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 871b6ee846eSAlexander V. Chernikov 872b6ee846eSAlexander V. Chernikov /* 87335e1bbd0SAlexander V. Chernikov * Other thread has already performed resize. 87435e1bbd0SAlexander V. Chernikov * Flush our state and return. 875b6ee846eSAlexander V. Chernikov */ 876b6ee846eSAlexander V. Chernikov ta->flush_mod(ta_buf); 877b6ee846eSAlexander V. Chernikov break; 878b6ee846eSAlexander V. Chernikov } 879b6ee846eSAlexander V. Chernikov 880b6ee846eSAlexander V. Chernikov error = ta->fill_mod(tc->astate, ti, ta_buf, &pflags); 881b6ee846eSAlexander V. Chernikov if (error == 0) { 882db785d31SAlexander V. Chernikov /* Do actual modification */ 883db785d31SAlexander V. Chernikov IPFW_WLOCK(ch); 88468394ec8SAlexander V. Chernikov ta->modify(tc->astate, ti, ta_buf, pflags); 885db785d31SAlexander V. Chernikov IPFW_WUNLOCK(ch); 886db785d31SAlexander V. Chernikov } 887db785d31SAlexander V. Chernikov 888b6ee846eSAlexander V. Chernikov /* Anyway, flush data and retry */ 889db785d31SAlexander V. Chernikov ta->flush_mod(ta_buf); 890b6ee846eSAlexander V. Chernikov } 891db785d31SAlexander V. Chernikov 892b6ee846eSAlexander V. Chernikov tc->no.refcnt--; 893db785d31SAlexander V. Chernikov return (error); 894db785d31SAlexander V. Chernikov } 895db785d31SAlexander V. Chernikov 8963a845e10SAlexander V. Chernikov /* 897ac35ff17SAlexander V. Chernikov * Adds or deletes record in table. 898ac35ff17SAlexander V. Chernikov * Data layout (v0): 899ac35ff17SAlexander V. Chernikov * Request: [ ip_fw3_opheader ipfw_table_xentry ] 900ac35ff17SAlexander V. Chernikov * 901ac35ff17SAlexander V. Chernikov * Returns 0 on success 902ac35ff17SAlexander V. Chernikov */ 903ac35ff17SAlexander V. Chernikov static int 9046b988f3aSAlexander V. Chernikov manage_table_ent_v0(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 905ac35ff17SAlexander V. Chernikov struct sockopt_data *sd) 906ac35ff17SAlexander V. Chernikov { 907ac35ff17SAlexander V. Chernikov ipfw_table_xentry *xent; 908ac35ff17SAlexander V. Chernikov struct tentry_info tei; 909ac35ff17SAlexander V. Chernikov struct tid_info ti; 9100cba2b28SAlexander V. Chernikov struct table_value v; 911ac35ff17SAlexander V. Chernikov int error, hdrlen, read; 912ac35ff17SAlexander V. Chernikov 913ac35ff17SAlexander V. Chernikov hdrlen = offsetof(ipfw_table_xentry, k); 914ac35ff17SAlexander V. Chernikov 915ac35ff17SAlexander V. Chernikov /* Check minimum header size */ 916ac35ff17SAlexander V. Chernikov if (sd->valsize < (sizeof(*op3) + hdrlen)) 917ac35ff17SAlexander V. Chernikov return (EINVAL); 918ac35ff17SAlexander V. Chernikov 919ac35ff17SAlexander V. Chernikov read = sizeof(ip_fw3_opheader); 920ac35ff17SAlexander V. Chernikov 921ac35ff17SAlexander V. Chernikov /* Check if xentry len field is valid */ 922ac35ff17SAlexander V. Chernikov xent = (ipfw_table_xentry *)(op3 + 1); 923ac35ff17SAlexander V. Chernikov if (xent->len < hdrlen || xent->len + read > sd->valsize) 924ac35ff17SAlexander V. Chernikov return (EINVAL); 925ac35ff17SAlexander V. Chernikov 926ac35ff17SAlexander V. Chernikov memset(&tei, 0, sizeof(tei)); 927ac35ff17SAlexander V. Chernikov tei.paddr = &xent->k; 928ac35ff17SAlexander V. Chernikov tei.masklen = xent->masklen; 9290cba2b28SAlexander V. Chernikov ipfw_import_table_value_legacy(xent->value, &v); 9300cba2b28SAlexander V. Chernikov tei.pvalue = &v; 931a4641f4eSPedro F. Giffuni /* Old requests compatibility */ 932db785d31SAlexander V. Chernikov tei.flags = TEI_FLAGS_COMPAT; 933c21034b7SAlexander V. Chernikov if (xent->type == IPFW_TABLE_ADDR) { 934ac35ff17SAlexander V. Chernikov if (xent->len - hdrlen == sizeof(in_addr_t)) 935ac35ff17SAlexander V. Chernikov tei.subtype = AF_INET; 936ac35ff17SAlexander V. Chernikov else 937ac35ff17SAlexander V. Chernikov tei.subtype = AF_INET6; 938ac35ff17SAlexander V. Chernikov } 939ac35ff17SAlexander V. Chernikov 940ac35ff17SAlexander V. Chernikov memset(&ti, 0, sizeof(ti)); 941ac35ff17SAlexander V. Chernikov ti.uidx = xent->tbl; 942ac35ff17SAlexander V. Chernikov ti.type = xent->type; 943ac35ff17SAlexander V. Chernikov 944ac35ff17SAlexander V. Chernikov error = (op3->opcode == IP_FW_TABLE_XADD) ? 9453a845e10SAlexander V. Chernikov add_table_entry(ch, &ti, &tei, 0, 1) : 9463a845e10SAlexander V. Chernikov del_table_entry(ch, &ti, &tei, 0, 1); 947ac35ff17SAlexander V. Chernikov 948ac35ff17SAlexander V. Chernikov return (error); 949ac35ff17SAlexander V. Chernikov } 950ac35ff17SAlexander V. Chernikov 951ac35ff17SAlexander V. Chernikov /* 952ac35ff17SAlexander V. Chernikov * Adds or deletes record in table. 953ac35ff17SAlexander V. Chernikov * Data layout (v1)(current): 954db785d31SAlexander V. Chernikov * Request: [ ipfw_obj_header 955db785d31SAlexander V. Chernikov * ipfw_obj_ctlv(IPFW_TLV_TBLENT_LIST) [ ipfw_obj_tentry x N ] 956db785d31SAlexander V. Chernikov * ] 957ac35ff17SAlexander V. Chernikov * 958ac35ff17SAlexander V. Chernikov * Returns 0 on success 959ac35ff17SAlexander V. Chernikov */ 960ac35ff17SAlexander V. Chernikov static int 9616b988f3aSAlexander V. Chernikov manage_table_ent_v1(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 962ac35ff17SAlexander V. Chernikov struct sockopt_data *sd) 963ac35ff17SAlexander V. Chernikov { 9643a845e10SAlexander V. Chernikov ipfw_obj_tentry *tent, *ptent; 965db785d31SAlexander V. Chernikov ipfw_obj_ctlv *ctlv; 966ac35ff17SAlexander V. Chernikov ipfw_obj_header *oh; 9673a845e10SAlexander V. Chernikov struct tentry_info *ptei, tei, *tei_buf; 968ac35ff17SAlexander V. Chernikov struct tid_info ti; 9693a845e10SAlexander V. Chernikov int error, i, kidx, read; 970ac35ff17SAlexander V. Chernikov 971ac35ff17SAlexander V. Chernikov /* Check minimum header size */ 972db785d31SAlexander V. Chernikov if (sd->valsize < (sizeof(*oh) + sizeof(*ctlv))) 973ac35ff17SAlexander V. Chernikov return (EINVAL); 974ac35ff17SAlexander V. Chernikov 975ac35ff17SAlexander V. Chernikov /* Check if passed data is too long */ 976ac35ff17SAlexander V. Chernikov if (sd->valsize != sd->kavail) 977ac35ff17SAlexander V. Chernikov return (EINVAL); 978ac35ff17SAlexander V. Chernikov 979ac35ff17SAlexander V. Chernikov oh = (ipfw_obj_header *)sd->kbuf; 980ac35ff17SAlexander V. Chernikov 981ac35ff17SAlexander V. Chernikov /* Basic length checks for TLVs */ 982ac35ff17SAlexander V. Chernikov if (oh->ntlv.head.length != sizeof(oh->ntlv)) 983ac35ff17SAlexander V. Chernikov return (EINVAL); 984ac35ff17SAlexander V. Chernikov 985ac35ff17SAlexander V. Chernikov read = sizeof(*oh); 986ac35ff17SAlexander V. Chernikov 987db785d31SAlexander V. Chernikov ctlv = (ipfw_obj_ctlv *)(oh + 1); 988db785d31SAlexander V. Chernikov if (ctlv->head.length + read != sd->valsize) 989db785d31SAlexander V. Chernikov return (EINVAL); 990db785d31SAlexander V. Chernikov 991db785d31SAlexander V. Chernikov read += sizeof(*ctlv); 992db785d31SAlexander V. Chernikov tent = (ipfw_obj_tentry *)(ctlv + 1); 9933a845e10SAlexander V. Chernikov if (ctlv->count * sizeof(*tent) + read != sd->valsize) 994ac35ff17SAlexander V. Chernikov return (EINVAL); 995ac35ff17SAlexander V. Chernikov 9963a845e10SAlexander V. Chernikov if (ctlv->count == 0) 9973a845e10SAlexander V. Chernikov return (0); 998ac35ff17SAlexander V. Chernikov 9993a845e10SAlexander V. Chernikov /* 10003a845e10SAlexander V. Chernikov * Mark entire buffer as "read". 100135e1bbd0SAlexander V. Chernikov * This instructs sopt api write it back 10023a845e10SAlexander V. Chernikov * after function return. 10033a845e10SAlexander V. Chernikov */ 10043a845e10SAlexander V. Chernikov ipfw_get_sopt_header(sd, sd->valsize); 10053a845e10SAlexander V. Chernikov 10063a845e10SAlexander V. Chernikov /* Perform basic checks for each entry */ 10073a845e10SAlexander V. Chernikov ptent = tent; 10083a845e10SAlexander V. Chernikov kidx = tent->idx; 10093a845e10SAlexander V. Chernikov for (i = 0; i < ctlv->count; i++, ptent++) { 10103a845e10SAlexander V. Chernikov if (ptent->head.length != sizeof(*ptent)) 10113a845e10SAlexander V. Chernikov return (EINVAL); 10123a845e10SAlexander V. Chernikov if (ptent->idx != kidx) 10133a845e10SAlexander V. Chernikov return (ENOTSUP); 10143a845e10SAlexander V. Chernikov } 10153a845e10SAlexander V. Chernikov 10163a845e10SAlexander V. Chernikov /* Convert data into kernel request objects */ 101781d3153dSAlexander V. Chernikov objheader_to_ti(oh, &ti); 1018ac35ff17SAlexander V. Chernikov ti.type = oh->ntlv.type; 10193a845e10SAlexander V. Chernikov ti.uidx = kidx; 10203a845e10SAlexander V. Chernikov 10213a845e10SAlexander V. Chernikov /* Use on-stack buffer for single add/del */ 10223a845e10SAlexander V. Chernikov if (ctlv->count == 1) { 10233a845e10SAlexander V. Chernikov memset(&tei, 0, sizeof(tei)); 10243a845e10SAlexander V. Chernikov tei_buf = &tei; 10253a845e10SAlexander V. Chernikov } else 10263a845e10SAlexander V. Chernikov tei_buf = malloc(ctlv->count * sizeof(tei), M_TEMP, 10273a845e10SAlexander V. Chernikov M_WAITOK | M_ZERO); 10283a845e10SAlexander V. Chernikov 10293a845e10SAlexander V. Chernikov ptei = tei_buf; 10303a845e10SAlexander V. Chernikov ptent = tent; 10313a845e10SAlexander V. Chernikov for (i = 0; i < ctlv->count; i++, ptent++, ptei++) { 10323a845e10SAlexander V. Chernikov ptei->paddr = &ptent->k; 10333a845e10SAlexander V. Chernikov ptei->subtype = ptent->subtype; 10343a845e10SAlexander V. Chernikov ptei->masklen = ptent->masklen; 10353a845e10SAlexander V. Chernikov if (ptent->head.flags & IPFW_TF_UPDATE) 10363a845e10SAlexander V. Chernikov ptei->flags |= TEI_FLAGS_UPDATE; 10370cba2b28SAlexander V. Chernikov 10380cba2b28SAlexander V. Chernikov ipfw_import_table_value_v1(&ptent->v.value); 10390cba2b28SAlexander V. Chernikov ptei->pvalue = (struct table_value *)&ptent->v.value; 10403a845e10SAlexander V. Chernikov } 1041ac35ff17SAlexander V. Chernikov 1042ac35ff17SAlexander V. Chernikov error = (oh->opheader.opcode == IP_FW_TABLE_XADD) ? 10433a845e10SAlexander V. Chernikov add_table_entry(ch, &ti, tei_buf, ctlv->flags, ctlv->count) : 10443a845e10SAlexander V. Chernikov del_table_entry(ch, &ti, tei_buf, ctlv->flags, ctlv->count); 10453a845e10SAlexander V. Chernikov 10463a845e10SAlexander V. Chernikov /* Translate result back to userland */ 10473a845e10SAlexander V. Chernikov ptei = tei_buf; 10483a845e10SAlexander V. Chernikov ptent = tent; 10493a845e10SAlexander V. Chernikov for (i = 0; i < ctlv->count; i++, ptent++, ptei++) { 10503a845e10SAlexander V. Chernikov if (ptei->flags & TEI_FLAGS_ADDED) 10513a845e10SAlexander V. Chernikov ptent->result = IPFW_TR_ADDED; 10523a845e10SAlexander V. Chernikov else if (ptei->flags & TEI_FLAGS_DELETED) 10533a845e10SAlexander V. Chernikov ptent->result = IPFW_TR_DELETED; 10543a845e10SAlexander V. Chernikov else if (ptei->flags & TEI_FLAGS_UPDATED) 10553a845e10SAlexander V. Chernikov ptent->result = IPFW_TR_UPDATED; 10563a845e10SAlexander V. Chernikov else if (ptei->flags & TEI_FLAGS_LIMIT) 10573a845e10SAlexander V. Chernikov ptent->result = IPFW_TR_LIMIT; 10583a845e10SAlexander V. Chernikov else if (ptei->flags & TEI_FLAGS_ERROR) 10593a845e10SAlexander V. Chernikov ptent->result = IPFW_TR_ERROR; 10603a845e10SAlexander V. Chernikov else if (ptei->flags & TEI_FLAGS_NOTFOUND) 10613a845e10SAlexander V. Chernikov ptent->result = IPFW_TR_NOTFOUND; 10623a845e10SAlexander V. Chernikov else if (ptei->flags & TEI_FLAGS_EXISTS) 10633a845e10SAlexander V. Chernikov ptent->result = IPFW_TR_EXISTS; 10640cba2b28SAlexander V. Chernikov ipfw_export_table_value_v1(ptei->pvalue, &ptent->v.value); 10653a845e10SAlexander V. Chernikov } 10663a845e10SAlexander V. Chernikov 10673a845e10SAlexander V. Chernikov if (tei_buf != &tei) 10683a845e10SAlexander V. Chernikov free(tei_buf, M_TEMP); 1069ac35ff17SAlexander V. Chernikov 1070ac35ff17SAlexander V. Chernikov return (error); 1071ac35ff17SAlexander V. Chernikov } 1072ac35ff17SAlexander V. Chernikov 107381d3153dSAlexander V. Chernikov /* 107481d3153dSAlexander V. Chernikov * Looks up an entry in given table. 107581d3153dSAlexander V. Chernikov * Data layout (v0)(current): 107681d3153dSAlexander V. Chernikov * Request: [ ipfw_obj_header ipfw_obj_tentry ] 107781d3153dSAlexander V. Chernikov * Reply: [ ipfw_obj_header ipfw_obj_tentry ] 107881d3153dSAlexander V. Chernikov * 107981d3153dSAlexander V. Chernikov * Returns 0 on success 108081d3153dSAlexander V. Chernikov */ 10816b988f3aSAlexander V. Chernikov static int 10826b988f3aSAlexander V. Chernikov find_table_entry(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 108381d3153dSAlexander V. Chernikov struct sockopt_data *sd) 108481d3153dSAlexander V. Chernikov { 108581d3153dSAlexander V. Chernikov ipfw_obj_tentry *tent; 108681d3153dSAlexander V. Chernikov ipfw_obj_header *oh; 108781d3153dSAlexander V. Chernikov struct tid_info ti; 108881d3153dSAlexander V. Chernikov struct table_config *tc; 108981d3153dSAlexander V. Chernikov struct table_algo *ta; 109081d3153dSAlexander V. Chernikov struct table_info *kti; 1091308f2c6dSAndrey V. Elsukov struct table_value *pval; 109281d3153dSAlexander V. Chernikov struct namedobj_instance *ni; 1093914bffb6SAlexander V. Chernikov int error; 109481d3153dSAlexander V. Chernikov size_t sz; 109581d3153dSAlexander V. Chernikov 109681d3153dSAlexander V. Chernikov /* Check minimum header size */ 109781d3153dSAlexander V. Chernikov sz = sizeof(*oh) + sizeof(*tent); 109881d3153dSAlexander V. Chernikov if (sd->valsize != sz) 109981d3153dSAlexander V. Chernikov return (EINVAL); 110081d3153dSAlexander V. Chernikov 110181d3153dSAlexander V. Chernikov oh = (struct _ipfw_obj_header *)ipfw_get_sopt_header(sd, sz); 110281d3153dSAlexander V. Chernikov tent = (ipfw_obj_tentry *)(oh + 1); 110381d3153dSAlexander V. Chernikov 110481d3153dSAlexander V. Chernikov /* Basic length checks for TLVs */ 110581d3153dSAlexander V. Chernikov if (oh->ntlv.head.length != sizeof(oh->ntlv)) 110681d3153dSAlexander V. Chernikov return (EINVAL); 110781d3153dSAlexander V. Chernikov 110881d3153dSAlexander V. Chernikov objheader_to_ti(oh, &ti); 110981d3153dSAlexander V. Chernikov ti.type = oh->ntlv.type; 111081d3153dSAlexander V. Chernikov ti.uidx = tent->idx; 111181d3153dSAlexander V. Chernikov 111281d3153dSAlexander V. Chernikov IPFW_UH_RLOCK(ch); 111381d3153dSAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 111481d3153dSAlexander V. Chernikov 111581d3153dSAlexander V. Chernikov /* 111681d3153dSAlexander V. Chernikov * Find existing table and check its type . 111781d3153dSAlexander V. Chernikov */ 111881d3153dSAlexander V. Chernikov ta = NULL; 111981d3153dSAlexander V. Chernikov if ((tc = find_table(ni, &ti)) == NULL) { 112081d3153dSAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 112181d3153dSAlexander V. Chernikov return (ESRCH); 112281d3153dSAlexander V. Chernikov } 112381d3153dSAlexander V. Chernikov 112481d3153dSAlexander V. Chernikov /* check table type */ 112574b22066SAlexander V. Chernikov if (tc->no.subtype != ti.type) { 112681d3153dSAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 112781d3153dSAlexander V. Chernikov return (EINVAL); 112881d3153dSAlexander V. Chernikov } 112981d3153dSAlexander V. Chernikov 113081d3153dSAlexander V. Chernikov kti = KIDX_TO_TI(ch, tc->no.kidx); 113181d3153dSAlexander V. Chernikov ta = tc->ta; 113281d3153dSAlexander V. Chernikov 1133914bffb6SAlexander V. Chernikov if (ta->find_tentry == NULL) 1134914bffb6SAlexander V. Chernikov return (ENOTSUP); 1135914bffb6SAlexander V. Chernikov 1136914bffb6SAlexander V. Chernikov error = ta->find_tentry(tc->astate, kti, tent); 1137308f2c6dSAndrey V. Elsukov if (error == 0) { 1138308f2c6dSAndrey V. Elsukov pval = get_table_value(ch, tc, tent->v.kidx); 1139308f2c6dSAndrey V. Elsukov ipfw_export_table_value_v1(pval, &tent->v.value); 1140308f2c6dSAndrey V. Elsukov } 114181d3153dSAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 114281d3153dSAlexander V. Chernikov 114381d3153dSAlexander V. Chernikov return (error); 114481d3153dSAlexander V. Chernikov } 114581d3153dSAlexander V. Chernikov 114646d52008SAlexander V. Chernikov /* 114746d52008SAlexander V. Chernikov * Flushes all entries or destroys given table. 114846d52008SAlexander V. Chernikov * Data layout (v0)(current): 114946d52008SAlexander V. Chernikov * Request: [ ipfw_obj_header ] 115046d52008SAlexander V. Chernikov * 115146d52008SAlexander V. Chernikov * Returns 0 on success 115246d52008SAlexander V. Chernikov */ 11536b988f3aSAlexander V. Chernikov static int 11546b988f3aSAlexander V. Chernikov flush_table_v0(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 1155ac35ff17SAlexander V. Chernikov struct sockopt_data *sd) 1156ac35ff17SAlexander V. Chernikov { 1157ac35ff17SAlexander V. Chernikov int error; 1158ac35ff17SAlexander V. Chernikov struct _ipfw_obj_header *oh; 1159ac35ff17SAlexander V. Chernikov struct tid_info ti; 1160ac35ff17SAlexander V. Chernikov 1161ac35ff17SAlexander V. Chernikov if (sd->valsize != sizeof(*oh)) 1162ac35ff17SAlexander V. Chernikov return (EINVAL); 1163ac35ff17SAlexander V. Chernikov 1164ac35ff17SAlexander V. Chernikov oh = (struct _ipfw_obj_header *)op3; 1165ac35ff17SAlexander V. Chernikov objheader_to_ti(oh, &ti); 1166ac35ff17SAlexander V. Chernikov 11671832a7b3SAlexander V. Chernikov if (op3->opcode == IP_FW_TABLE_XDESTROY) 1168ac35ff17SAlexander V. Chernikov error = destroy_table(ch, &ti); 11691832a7b3SAlexander V. Chernikov else if (op3->opcode == IP_FW_TABLE_XFLUSH) 1170ac35ff17SAlexander V. Chernikov error = flush_table(ch, &ti); 1171ac35ff17SAlexander V. Chernikov else 1172ac35ff17SAlexander V. Chernikov return (ENOTSUP); 1173ac35ff17SAlexander V. Chernikov 1174ac35ff17SAlexander V. Chernikov return (error); 11753b3a8eb9SGleb Smirnoff } 11763b3a8eb9SGleb Smirnoff 1177fb4b37a3SAlexander V. Chernikov static void 1178fb4b37a3SAlexander V. Chernikov restart_flush(void *object, struct op_state *_state) 1179fb4b37a3SAlexander V. Chernikov { 1180fb4b37a3SAlexander V. Chernikov struct tableop_state *ts; 1181fb4b37a3SAlexander V. Chernikov 1182fb4b37a3SAlexander V. Chernikov ts = (struct tableop_state *)_state; 1183fb4b37a3SAlexander V. Chernikov 1184fb4b37a3SAlexander V. Chernikov if (ts->tc != object) 1185fb4b37a3SAlexander V. Chernikov return; 1186fb4b37a3SAlexander V. Chernikov 1187fb4b37a3SAlexander V. Chernikov /* Indicate we've called */ 1188fb4b37a3SAlexander V. Chernikov ts->modified = 1; 1189fb4b37a3SAlexander V. Chernikov } 1190fb4b37a3SAlexander V. Chernikov 119135e1bbd0SAlexander V. Chernikov /* 119235e1bbd0SAlexander V. Chernikov * Flushes given table. 119335e1bbd0SAlexander V. Chernikov * 119435e1bbd0SAlexander V. Chernikov * Function create new table instance with the same 119535e1bbd0SAlexander V. Chernikov * parameters, swaps it with old one and 1196fb4b37a3SAlexander V. Chernikov * flushes state without holding runtime WLOCK. 119735e1bbd0SAlexander V. Chernikov * 119835e1bbd0SAlexander V. Chernikov * Returns 0 on success. 119935e1bbd0SAlexander V. Chernikov */ 12001832a7b3SAlexander V. Chernikov int 1201ac35ff17SAlexander V. Chernikov flush_table(struct ip_fw_chain *ch, struct tid_info *ti) 12023b3a8eb9SGleb Smirnoff { 1203b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 1204b074b7bbSAlexander V. Chernikov struct table_config *tc; 12059f7d47b0SAlexander V. Chernikov struct table_algo *ta; 12069f7d47b0SAlexander V. Chernikov struct table_info ti_old, ti_new, *tablestate; 12079f7d47b0SAlexander V. Chernikov void *astate_old, *astate_new; 1208914bffb6SAlexander V. Chernikov char algostate[64], *pstate; 1209fb4b37a3SAlexander V. Chernikov struct tableop_state ts; 12100caab009SAlexander V. Chernikov int error, need_gc; 1211b074b7bbSAlexander V. Chernikov uint16_t kidx; 1212914bffb6SAlexander V. Chernikov uint8_t tflags; 12133b3a8eb9SGleb Smirnoff 12143b3a8eb9SGleb Smirnoff /* 1215a4641f4eSPedro F. Giffuni * Stage 1: save table algorithm. 1216b074b7bbSAlexander V. Chernikov * Reference found table to ensure it won't disappear. 12173b3a8eb9SGleb Smirnoff */ 1218b074b7bbSAlexander V. Chernikov IPFW_UH_WLOCK(ch); 1219b074b7bbSAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 1220b074b7bbSAlexander V. Chernikov if ((tc = find_table(ni, ti)) == NULL) { 1221b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1222b074b7bbSAlexander V. Chernikov return (ESRCH); 1223b074b7bbSAlexander V. Chernikov } 12240caab009SAlexander V. Chernikov need_gc = 0; 12250caab009SAlexander V. Chernikov astate_new = NULL; 12260caab009SAlexander V. Chernikov memset(&ti_new, 0, sizeof(ti_new)); 1227fb4b37a3SAlexander V. Chernikov restart: 1228fb4b37a3SAlexander V. Chernikov /* Set up swap handler */ 1229fb4b37a3SAlexander V. Chernikov memset(&ts, 0, sizeof(ts)); 1230fb4b37a3SAlexander V. Chernikov ts.opstate.func = restart_flush; 1231fb4b37a3SAlexander V. Chernikov ts.tc = tc; 1232fb4b37a3SAlexander V. Chernikov 12339f7d47b0SAlexander V. Chernikov ta = tc->ta; 1234fd0869d5SAlexander V. Chernikov /* Do not flush readonly tables */ 1235fd0869d5SAlexander V. Chernikov if ((ta->flags & TA_FLAG_READONLY) != 0) { 1236fd0869d5SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1237fd0869d5SAlexander V. Chernikov return (EACCES); 1238fd0869d5SAlexander V. Chernikov } 123935e1bbd0SAlexander V. Chernikov /* Save startup algo parameters */ 1240daabb523SAlexander V. Chernikov if (ta->print_config != NULL) { 1241daabb523SAlexander V. Chernikov ta->print_config(tc->astate, KIDX_TO_TI(ch, tc->no.kidx), 1242daabb523SAlexander V. Chernikov algostate, sizeof(algostate)); 1243daabb523SAlexander V. Chernikov pstate = algostate; 1244daabb523SAlexander V. Chernikov } else 1245daabb523SAlexander V. Chernikov pstate = NULL; 1246914bffb6SAlexander V. Chernikov tflags = tc->tflags; 1247fb4b37a3SAlexander V. Chernikov tc->no.refcnt++; 1248fb4b37a3SAlexander V. Chernikov add_toperation_state(ch, &ts); 1249b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 12503b3a8eb9SGleb Smirnoff 1251b074b7bbSAlexander V. Chernikov /* 12520caab009SAlexander V. Chernikov * Stage 1.5: if this is not the first attempt, destroy previous state 12530caab009SAlexander V. Chernikov */ 12540caab009SAlexander V. Chernikov if (need_gc != 0) { 12550caab009SAlexander V. Chernikov ta->destroy(astate_new, &ti_new); 12560caab009SAlexander V. Chernikov need_gc = 0; 12570caab009SAlexander V. Chernikov } 12580caab009SAlexander V. Chernikov 12590caab009SAlexander V. Chernikov /* 12609f7d47b0SAlexander V. Chernikov * Stage 2: allocate new table instance using same algo. 1261b074b7bbSAlexander V. Chernikov */ 12629f7d47b0SAlexander V. Chernikov memset(&ti_new, 0, sizeof(struct table_info)); 1263fb4b37a3SAlexander V. Chernikov error = ta->init(ch, &astate_new, &ti_new, pstate, tflags); 1264b074b7bbSAlexander V. Chernikov 1265b074b7bbSAlexander V. Chernikov /* 1266b074b7bbSAlexander V. Chernikov * Stage 3: swap old state pointers with newly-allocated ones. 1267b074b7bbSAlexander V. Chernikov * Decrease refcount. 1268b074b7bbSAlexander V. Chernikov */ 1269b074b7bbSAlexander V. Chernikov IPFW_UH_WLOCK(ch); 1270fb4b37a3SAlexander V. Chernikov tc->no.refcnt--; 1271fb4b37a3SAlexander V. Chernikov del_toperation_state(ch, &ts); 1272fb4b37a3SAlexander V. Chernikov 1273fb4b37a3SAlexander V. Chernikov if (error != 0) { 1274fb4b37a3SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1275fb4b37a3SAlexander V. Chernikov return (error); 1276fb4b37a3SAlexander V. Chernikov } 1277fb4b37a3SAlexander V. Chernikov 1278fb4b37a3SAlexander V. Chernikov /* 1279fb4b37a3SAlexander V. Chernikov * Restart operation if table swap has happened: 1280fb4b37a3SAlexander V. Chernikov * even if algo may be the same, algo init parameters 1281fb4b37a3SAlexander V. Chernikov * may change. Restart operation instead of doing 1282fb4b37a3SAlexander V. Chernikov * complex checks. 1283fb4b37a3SAlexander V. Chernikov */ 1284fb4b37a3SAlexander V. Chernikov if (ts.modified != 0) { 12850caab009SAlexander V. Chernikov /* Delay destroying data since we're holding UH lock */ 12860caab009SAlexander V. Chernikov need_gc = 1; 1287fb4b37a3SAlexander V. Chernikov goto restart; 1288fb4b37a3SAlexander V. Chernikov } 1289b074b7bbSAlexander V. Chernikov 1290b074b7bbSAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 1291b074b7bbSAlexander V. Chernikov kidx = tc->no.kidx; 12929f7d47b0SAlexander V. Chernikov tablestate = (struct table_info *)ch->tablestate; 1293b074b7bbSAlexander V. Chernikov 12949f7d47b0SAlexander V. Chernikov IPFW_WLOCK(ch); 12959f7d47b0SAlexander V. Chernikov ti_old = tablestate[kidx]; 12969f7d47b0SAlexander V. Chernikov tablestate[kidx] = ti_new; 12979f7d47b0SAlexander V. Chernikov IPFW_WUNLOCK(ch); 1298b074b7bbSAlexander V. Chernikov 12999f7d47b0SAlexander V. Chernikov astate_old = tc->astate; 13009f7d47b0SAlexander V. Chernikov tc->astate = astate_new; 13014c060d85SAlexander V. Chernikov tc->ti_copy = ti_new; 13029f7d47b0SAlexander V. Chernikov tc->count = 0; 1303b074b7bbSAlexander V. Chernikov 130479e86902SAlexander V. Chernikov /* Notify algo on real @ti address */ 130579e86902SAlexander V. Chernikov if (ta->change_ti != NULL) 130679e86902SAlexander V. Chernikov ta->change_ti(tc->astate, &tablestate[kidx]); 130779e86902SAlexander V. Chernikov 13080cba2b28SAlexander V. Chernikov /* 13090cba2b28SAlexander V. Chernikov * Stage 4: unref values. 13100cba2b28SAlexander V. Chernikov */ 13110cba2b28SAlexander V. Chernikov ipfw_unref_table_values(ch, tc, ta, astate_old, &ti_old); 1312b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 13133b3a8eb9SGleb Smirnoff 1314b074b7bbSAlexander V. Chernikov /* 13150cba2b28SAlexander V. Chernikov * Stage 5: perform real flush/destroy. 1316b074b7bbSAlexander V. Chernikov */ 13179f7d47b0SAlexander V. Chernikov ta->destroy(astate_old, &ti_old); 13183b3a8eb9SGleb Smirnoff 13193b3a8eb9SGleb Smirnoff return (0); 13203b3a8eb9SGleb Smirnoff } 13213b3a8eb9SGleb Smirnoff 1322b074b7bbSAlexander V. Chernikov /* 132346d52008SAlexander V. Chernikov * Swaps two tables. 132446d52008SAlexander V. Chernikov * Data layout (v0)(current): 132546d52008SAlexander V. Chernikov * Request: [ ipfw_obj_header ipfw_obj_ntlv ] 132646d52008SAlexander V. Chernikov * 132746d52008SAlexander V. Chernikov * Returns 0 on success 132846d52008SAlexander V. Chernikov */ 13296b988f3aSAlexander V. Chernikov static int 13306b988f3aSAlexander V. Chernikov swap_table(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 133146d52008SAlexander V. Chernikov struct sockopt_data *sd) 133246d52008SAlexander V. Chernikov { 133346d52008SAlexander V. Chernikov int error; 133446d52008SAlexander V. Chernikov struct _ipfw_obj_header *oh; 133546d52008SAlexander V. Chernikov struct tid_info ti_a, ti_b; 133646d52008SAlexander V. Chernikov 133746d52008SAlexander V. Chernikov if (sd->valsize != sizeof(*oh) + sizeof(ipfw_obj_ntlv)) 133846d52008SAlexander V. Chernikov return (EINVAL); 133946d52008SAlexander V. Chernikov 134046d52008SAlexander V. Chernikov oh = (struct _ipfw_obj_header *)op3; 134146d52008SAlexander V. Chernikov ntlv_to_ti(&oh->ntlv, &ti_a); 134246d52008SAlexander V. Chernikov ntlv_to_ti((ipfw_obj_ntlv *)(oh + 1), &ti_b); 134346d52008SAlexander V. Chernikov 1344a73d728dSAlexander V. Chernikov error = swap_tables(ch, &ti_a, &ti_b); 134546d52008SAlexander V. Chernikov 134646d52008SAlexander V. Chernikov return (error); 134746d52008SAlexander V. Chernikov } 134846d52008SAlexander V. Chernikov 134935e1bbd0SAlexander V. Chernikov /* 135035e1bbd0SAlexander V. Chernikov * Swaps two tables of the same type/valtype. 135135e1bbd0SAlexander V. Chernikov * 135235e1bbd0SAlexander V. Chernikov * Checks if tables are compatible and limits 1353c8d5d308SAlexander V. Chernikov * permits swap, than actually perform swap. 135435e1bbd0SAlexander V. Chernikov * 1355c8d5d308SAlexander V. Chernikov * Each table consists of 2 different parts: 1356c8d5d308SAlexander V. Chernikov * config: 1357c8d5d308SAlexander V. Chernikov * @tc (with name, set, kidx) and rule bindings, which is "stable". 1358c8d5d308SAlexander V. Chernikov * number of items 1359c8d5d308SAlexander V. Chernikov * table algo 1360c8d5d308SAlexander V. Chernikov * runtime: 1361c8d5d308SAlexander V. Chernikov * runtime data @ti (ch->tablestate) 1362c8d5d308SAlexander V. Chernikov * runtime cache in @tc 1363c8d5d308SAlexander V. Chernikov * algo-specific data (@tc->astate) 1364c8d5d308SAlexander V. Chernikov * 1365c8d5d308SAlexander V. Chernikov * So we switch: 1366c8d5d308SAlexander V. Chernikov * all runtime data 1367c8d5d308SAlexander V. Chernikov * number of items 1368c8d5d308SAlexander V. Chernikov * table algo 1369c8d5d308SAlexander V. Chernikov * 1370c8d5d308SAlexander V. Chernikov * After that we call @ti change handler for each table. 1371c8d5d308SAlexander V. Chernikov * 1372c8d5d308SAlexander V. Chernikov * Note that referencing @tc won't protect tc->ta from change. 1373c8d5d308SAlexander V. Chernikov * XXX: Do we need to restrict swap between locked tables? 1374c8d5d308SAlexander V. Chernikov * XXX: Do we need to exchange ftype? 137535e1bbd0SAlexander V. Chernikov * 137635e1bbd0SAlexander V. Chernikov * Returns 0 on success. 137735e1bbd0SAlexander V. Chernikov */ 137846d52008SAlexander V. Chernikov static int 1379a73d728dSAlexander V. Chernikov swap_tables(struct ip_fw_chain *ch, struct tid_info *a, 138046d52008SAlexander V. Chernikov struct tid_info *b) 138146d52008SAlexander V. Chernikov { 138246d52008SAlexander V. Chernikov struct namedobj_instance *ni; 138346d52008SAlexander V. Chernikov struct table_config *tc_a, *tc_b; 138446d52008SAlexander V. Chernikov struct table_algo *ta; 138546d52008SAlexander V. Chernikov struct table_info ti, *tablestate; 138646d52008SAlexander V. Chernikov void *astate; 138746d52008SAlexander V. Chernikov uint32_t count; 138846d52008SAlexander V. Chernikov 138946d52008SAlexander V. Chernikov /* 139046d52008SAlexander V. Chernikov * Stage 1: find both tables and ensure they are of 139135e1bbd0SAlexander V. Chernikov * the same type. 139246d52008SAlexander V. Chernikov */ 139346d52008SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 139446d52008SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 139546d52008SAlexander V. Chernikov if ((tc_a = find_table(ni, a)) == NULL) { 139646d52008SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 139746d52008SAlexander V. Chernikov return (ESRCH); 139846d52008SAlexander V. Chernikov } 139946d52008SAlexander V. Chernikov if ((tc_b = find_table(ni, b)) == NULL) { 140046d52008SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 140146d52008SAlexander V. Chernikov return (ESRCH); 140246d52008SAlexander V. Chernikov } 140346d52008SAlexander V. Chernikov 140446d52008SAlexander V. Chernikov /* It is very easy to swap between the same table */ 140546d52008SAlexander V. Chernikov if (tc_a == tc_b) { 140646d52008SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 140746d52008SAlexander V. Chernikov return (0); 140846d52008SAlexander V. Chernikov } 140946d52008SAlexander V. Chernikov 141046d52008SAlexander V. Chernikov /* Check type and value are the same */ 141174b22066SAlexander V. Chernikov if (tc_a->no.subtype!=tc_b->no.subtype || tc_a->tflags!=tc_b->tflags) { 141246d52008SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 141346d52008SAlexander V. Chernikov return (EINVAL); 141446d52008SAlexander V. Chernikov } 141546d52008SAlexander V. Chernikov 141646d52008SAlexander V. Chernikov /* Check limits before swap */ 141746d52008SAlexander V. Chernikov if ((tc_a->limit != 0 && tc_b->count > tc_a->limit) || 141846d52008SAlexander V. Chernikov (tc_b->limit != 0 && tc_a->count > tc_b->limit)) { 141946d52008SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 142046d52008SAlexander V. Chernikov return (EFBIG); 142146d52008SAlexander V. Chernikov } 142246d52008SAlexander V. Chernikov 1423fd0869d5SAlexander V. Chernikov /* Check if one of the tables is readonly */ 1424fd0869d5SAlexander V. Chernikov if (((tc_a->ta->flags | tc_b->ta->flags) & TA_FLAG_READONLY) != 0) { 1425fd0869d5SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1426fd0869d5SAlexander V. Chernikov return (EACCES); 1427fd0869d5SAlexander V. Chernikov } 1428fd0869d5SAlexander V. Chernikov 14290cba2b28SAlexander V. Chernikov /* Notify we're going to swap */ 14300cba2b28SAlexander V. Chernikov rollback_toperation_state(ch, tc_a); 14310cba2b28SAlexander V. Chernikov rollback_toperation_state(ch, tc_b); 14320cba2b28SAlexander V. Chernikov 143346d52008SAlexander V. Chernikov /* Everything is fine, prepare to swap */ 143446d52008SAlexander V. Chernikov tablestate = (struct table_info *)ch->tablestate; 143546d52008SAlexander V. Chernikov ti = tablestate[tc_a->no.kidx]; 143646d52008SAlexander V. Chernikov ta = tc_a->ta; 143746d52008SAlexander V. Chernikov astate = tc_a->astate; 143846d52008SAlexander V. Chernikov count = tc_a->count; 143946d52008SAlexander V. Chernikov 144046d52008SAlexander V. Chernikov IPFW_WLOCK(ch); 144146d52008SAlexander V. Chernikov /* a <- b */ 144246d52008SAlexander V. Chernikov tablestate[tc_a->no.kidx] = tablestate[tc_b->no.kidx]; 144346d52008SAlexander V. Chernikov tc_a->ta = tc_b->ta; 144446d52008SAlexander V. Chernikov tc_a->astate = tc_b->astate; 144546d52008SAlexander V. Chernikov tc_a->count = tc_b->count; 144646d52008SAlexander V. Chernikov /* b <- a */ 144746d52008SAlexander V. Chernikov tablestate[tc_b->no.kidx] = ti; 144846d52008SAlexander V. Chernikov tc_b->ta = ta; 144946d52008SAlexander V. Chernikov tc_b->astate = astate; 145046d52008SAlexander V. Chernikov tc_b->count = count; 145146d52008SAlexander V. Chernikov IPFW_WUNLOCK(ch); 145246d52008SAlexander V. Chernikov 145346d52008SAlexander V. Chernikov /* Ensure tc.ti copies are in sync */ 14544c060d85SAlexander V. Chernikov tc_a->ti_copy = tablestate[tc_a->no.kidx]; 14554c060d85SAlexander V. Chernikov tc_b->ti_copy = tablestate[tc_b->no.kidx]; 145646d52008SAlexander V. Chernikov 145746d52008SAlexander V. Chernikov /* Notify both tables on @ti change */ 145846d52008SAlexander V. Chernikov if (tc_a->ta->change_ti != NULL) 145946d52008SAlexander V. Chernikov tc_a->ta->change_ti(tc_a->astate, &tablestate[tc_a->no.kidx]); 146046d52008SAlexander V. Chernikov if (tc_b->ta->change_ti != NULL) 146146d52008SAlexander V. Chernikov tc_b->ta->change_ti(tc_b->astate, &tablestate[tc_b->no.kidx]); 146246d52008SAlexander V. Chernikov 146346d52008SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 146446d52008SAlexander V. Chernikov 146546d52008SAlexander V. Chernikov return (0); 146646d52008SAlexander V. Chernikov } 146746d52008SAlexander V. Chernikov 146846d52008SAlexander V. Chernikov /* 14699f7d47b0SAlexander V. Chernikov * Destroys table specified by @ti. 1470ac35ff17SAlexander V. Chernikov * Data layout (v0)(current): 1471ac35ff17SAlexander V. Chernikov * Request: [ ip_fw3_opheader ] 1472ac35ff17SAlexander V. Chernikov * 1473ac35ff17SAlexander V. Chernikov * Returns 0 on success 1474b074b7bbSAlexander V. Chernikov */ 1475ac35ff17SAlexander V. Chernikov static int 1476ac35ff17SAlexander V. Chernikov destroy_table(struct ip_fw_chain *ch, struct tid_info *ti) 1477b074b7bbSAlexander V. Chernikov { 1478b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 1479b074b7bbSAlexander V. Chernikov struct table_config *tc; 1480b074b7bbSAlexander V. Chernikov 1481b074b7bbSAlexander V. Chernikov IPFW_UH_WLOCK(ch); 1482b074b7bbSAlexander V. Chernikov 1483b074b7bbSAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 1484b074b7bbSAlexander V. Chernikov if ((tc = find_table(ni, ti)) == NULL) { 1485b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1486b074b7bbSAlexander V. Chernikov return (ESRCH); 1487b074b7bbSAlexander V. Chernikov } 1488b074b7bbSAlexander V. Chernikov 14899f7d47b0SAlexander V. Chernikov /* Do not permit destroying referenced tables */ 14909f7d47b0SAlexander V. Chernikov if (tc->no.refcnt > 0) { 1491b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1492b074b7bbSAlexander V. Chernikov return (EBUSY); 1493b074b7bbSAlexander V. Chernikov } 1494b074b7bbSAlexander V. Chernikov 1495b074b7bbSAlexander V. Chernikov IPFW_WLOCK(ch); 1496b074b7bbSAlexander V. Chernikov unlink_table(ch, tc); 1497b074b7bbSAlexander V. Chernikov IPFW_WUNLOCK(ch); 1498b074b7bbSAlexander V. Chernikov 1499b074b7bbSAlexander V. Chernikov /* Free obj index */ 1500ac35ff17SAlexander V. Chernikov if (ipfw_objhash_free_idx(ni, tc->no.kidx) != 0) 1501b074b7bbSAlexander V. Chernikov printf("Error unlinking kidx %d from table %s\n", 1502b074b7bbSAlexander V. Chernikov tc->no.kidx, tc->tablename); 1503b074b7bbSAlexander V. Chernikov 15040cba2b28SAlexander V. Chernikov /* Unref values used in tables while holding UH lock */ 15054c060d85SAlexander V. Chernikov ipfw_unref_table_values(ch, tc, tc->ta, tc->astate, &tc->ti_copy); 1506b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1507b074b7bbSAlexander V. Chernikov 1508b074b7bbSAlexander V. Chernikov free_table_config(ni, tc); 1509b074b7bbSAlexander V. Chernikov 1510b074b7bbSAlexander V. Chernikov return (0); 1511b074b7bbSAlexander V. Chernikov } 1512b074b7bbSAlexander V. Chernikov 15134040f4ecSAlexander V. Chernikov static uint32_t 15144040f4ecSAlexander V. Chernikov roundup2p(uint32_t v) 15154040f4ecSAlexander V. Chernikov { 15164040f4ecSAlexander V. Chernikov 15174040f4ecSAlexander V. Chernikov v--; 15184040f4ecSAlexander V. Chernikov v |= v >> 1; 15194040f4ecSAlexander V. Chernikov v |= v >> 2; 15204040f4ecSAlexander V. Chernikov v |= v >> 4; 15214040f4ecSAlexander V. Chernikov v |= v >> 8; 15224040f4ecSAlexander V. Chernikov v |= v >> 16; 15234040f4ecSAlexander V. Chernikov v++; 15244040f4ecSAlexander V. Chernikov 15254040f4ecSAlexander V. Chernikov return (v); 15264040f4ecSAlexander V. Chernikov } 15274040f4ecSAlexander V. Chernikov 152835e1bbd0SAlexander V. Chernikov /* 152935e1bbd0SAlexander V. Chernikov * Grow tables index. 153035e1bbd0SAlexander V. Chernikov * 153135e1bbd0SAlexander V. Chernikov * Returns 0 on success. 153235e1bbd0SAlexander V. Chernikov */ 15333b3a8eb9SGleb Smirnoff int 15343b3a8eb9SGleb Smirnoff ipfw_resize_tables(struct ip_fw_chain *ch, unsigned int ntables) 15353b3a8eb9SGleb Smirnoff { 15363b3a8eb9SGleb Smirnoff unsigned int ntables_old, tbl; 1537b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 15389f7d47b0SAlexander V. Chernikov void *new_idx, *old_tablestate, *tablestate; 153968394ec8SAlexander V. Chernikov struct table_info *ti; 154068394ec8SAlexander V. Chernikov struct table_config *tc; 154168394ec8SAlexander V. Chernikov int i, new_blocks; 15423b3a8eb9SGleb Smirnoff 15433b3a8eb9SGleb Smirnoff /* Check new value for validity */ 15444040f4ecSAlexander V. Chernikov if (ntables == 0) 15454040f4ecSAlexander V. Chernikov return (EINVAL); 15463b3a8eb9SGleb Smirnoff if (ntables > IPFW_TABLES_MAX) 15473b3a8eb9SGleb Smirnoff ntables = IPFW_TABLES_MAX; 15484040f4ecSAlexander V. Chernikov /* Alight to nearest power of 2 */ 15494040f4ecSAlexander V. Chernikov ntables = (unsigned int)roundup2p(ntables); 15503b3a8eb9SGleb Smirnoff 15513b3a8eb9SGleb Smirnoff /* Allocate new pointers */ 15529f7d47b0SAlexander V. Chernikov tablestate = malloc(ntables * sizeof(struct table_info), 15539f7d47b0SAlexander V. Chernikov M_IPFW, M_WAITOK | M_ZERO); 15549f7d47b0SAlexander V. Chernikov 1555b074b7bbSAlexander V. Chernikov ipfw_objhash_bitmap_alloc(ntables, (void *)&new_idx, &new_blocks); 15563b3a8eb9SGleb Smirnoff 15579f7d47b0SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 15583b3a8eb9SGleb Smirnoff 15593b3a8eb9SGleb Smirnoff tbl = (ntables >= V_fw_tables_max) ? V_fw_tables_max : ntables; 1560b074b7bbSAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 1561b074b7bbSAlexander V. Chernikov 15629f7d47b0SAlexander V. Chernikov /* Temporary restrict decreasing max_tables */ 15639f7d47b0SAlexander V. Chernikov if (ntables < V_fw_tables_max) { 15649f7d47b0SAlexander V. Chernikov 15659f7d47b0SAlexander V. Chernikov /* 15669f7d47b0SAlexander V. Chernikov * FIXME: Check if we really can shrink 15679f7d47b0SAlexander V. Chernikov */ 15689f7d47b0SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1569b074b7bbSAlexander V. Chernikov return (EINVAL); 1570b074b7bbSAlexander V. Chernikov } 15713b3a8eb9SGleb Smirnoff 15729f7d47b0SAlexander V. Chernikov /* Copy table info/indices */ 15739f7d47b0SAlexander V. Chernikov memcpy(tablestate, ch->tablestate, sizeof(struct table_info) * tbl); 15749f7d47b0SAlexander V. Chernikov ipfw_objhash_bitmap_merge(ni, &new_idx, &new_blocks); 15753b3a8eb9SGleb Smirnoff 15769f7d47b0SAlexander V. Chernikov IPFW_WLOCK(ch); 15779f7d47b0SAlexander V. Chernikov 15789f7d47b0SAlexander V. Chernikov /* Change pointers */ 15799f7d47b0SAlexander V. Chernikov old_tablestate = ch->tablestate; 15809f7d47b0SAlexander V. Chernikov ch->tablestate = tablestate; 15819f7d47b0SAlexander V. Chernikov ipfw_objhash_bitmap_swap(ni, &new_idx, &new_blocks); 15823b3a8eb9SGleb Smirnoff 15833b3a8eb9SGleb Smirnoff ntables_old = V_fw_tables_max; 15843b3a8eb9SGleb Smirnoff V_fw_tables_max = ntables; 15853b3a8eb9SGleb Smirnoff 15863b3a8eb9SGleb Smirnoff IPFW_WUNLOCK(ch); 158768394ec8SAlexander V. Chernikov 158868394ec8SAlexander V. Chernikov /* Notify all consumers that their @ti pointer has changed */ 158968394ec8SAlexander V. Chernikov ti = (struct table_info *)ch->tablestate; 159068394ec8SAlexander V. Chernikov for (i = 0; i < tbl; i++, ti++) { 159168394ec8SAlexander V. Chernikov if (ti->lookup == NULL) 159268394ec8SAlexander V. Chernikov continue; 159368394ec8SAlexander V. Chernikov tc = (struct table_config *)ipfw_objhash_lookup_kidx(ni, i); 159468394ec8SAlexander V. Chernikov if (tc == NULL || tc->ta->change_ti == NULL) 159568394ec8SAlexander V. Chernikov continue; 159668394ec8SAlexander V. Chernikov 159768394ec8SAlexander V. Chernikov tc->ta->change_ti(tc->astate, ti); 159868394ec8SAlexander V. Chernikov } 159968394ec8SAlexander V. Chernikov 16009f7d47b0SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 16013b3a8eb9SGleb Smirnoff 16023b3a8eb9SGleb Smirnoff /* Free old pointers */ 16039f7d47b0SAlexander V. Chernikov free(old_tablestate, M_IPFW); 1604b074b7bbSAlexander V. Chernikov ipfw_objhash_bitmap_free(new_idx, new_blocks); 16053b3a8eb9SGleb Smirnoff 16063b3a8eb9SGleb Smirnoff return (0); 16073b3a8eb9SGleb Smirnoff } 16083b3a8eb9SGleb Smirnoff 1609a73d728dSAlexander V. Chernikov /* 16106951cecfSAndrey V. Elsukov * Lookup table's named object by its @kidx. 16116951cecfSAndrey V. Elsukov */ 16126951cecfSAndrey V. Elsukov struct named_object * 16136951cecfSAndrey V. Elsukov ipfw_objhash_lookup_table_kidx(struct ip_fw_chain *ch, uint16_t kidx) 16146951cecfSAndrey V. Elsukov { 16156951cecfSAndrey V. Elsukov 16166951cecfSAndrey V. Elsukov return (ipfw_objhash_lookup_kidx(CHAIN_TO_NI(ch), kidx)); 16176951cecfSAndrey V. Elsukov } 16186951cecfSAndrey V. Elsukov 16196951cecfSAndrey V. Elsukov /* 16206951cecfSAndrey V. Elsukov * Take reference to table specified in @ntlv. 16216951cecfSAndrey V. Elsukov * On success return its @kidx. 16226951cecfSAndrey V. Elsukov */ 16236951cecfSAndrey V. Elsukov int 16246951cecfSAndrey V. Elsukov ipfw_ref_table(struct ip_fw_chain *ch, ipfw_obj_ntlv *ntlv, uint16_t *kidx) 16256951cecfSAndrey V. Elsukov { 16266951cecfSAndrey V. Elsukov struct tid_info ti; 16276951cecfSAndrey V. Elsukov struct table_config *tc; 16286951cecfSAndrey V. Elsukov int error; 16296951cecfSAndrey V. Elsukov 16306951cecfSAndrey V. Elsukov IPFW_UH_WLOCK_ASSERT(ch); 16316951cecfSAndrey V. Elsukov 16326951cecfSAndrey V. Elsukov ntlv_to_ti(ntlv, &ti); 16336951cecfSAndrey V. Elsukov error = find_table_err(CHAIN_TO_NI(ch), &ti, &tc); 16346951cecfSAndrey V. Elsukov if (error != 0) 16356951cecfSAndrey V. Elsukov return (error); 16366951cecfSAndrey V. Elsukov 16376951cecfSAndrey V. Elsukov if (tc == NULL) 16386951cecfSAndrey V. Elsukov return (ESRCH); 16396951cecfSAndrey V. Elsukov 16406951cecfSAndrey V. Elsukov tc_ref(tc); 16416951cecfSAndrey V. Elsukov *kidx = tc->no.kidx; 16426951cecfSAndrey V. Elsukov 16436951cecfSAndrey V. Elsukov return (0); 16446951cecfSAndrey V. Elsukov } 16456951cecfSAndrey V. Elsukov 16466951cecfSAndrey V. Elsukov void 16476951cecfSAndrey V. Elsukov ipfw_unref_table(struct ip_fw_chain *ch, uint16_t kidx) 16486951cecfSAndrey V. Elsukov { 16496951cecfSAndrey V. Elsukov 16506951cecfSAndrey V. Elsukov struct namedobj_instance *ni; 16516951cecfSAndrey V. Elsukov struct named_object *no; 16526951cecfSAndrey V. Elsukov 16536951cecfSAndrey V. Elsukov IPFW_UH_WLOCK_ASSERT(ch); 16546951cecfSAndrey V. Elsukov ni = CHAIN_TO_NI(ch); 16556951cecfSAndrey V. Elsukov no = ipfw_objhash_lookup_kidx(ni, kidx); 16566951cecfSAndrey V. Elsukov KASSERT(no != NULL, ("Table with index %d not found", kidx)); 16576951cecfSAndrey V. Elsukov no->refcnt--; 16586951cecfSAndrey V. Elsukov } 16596951cecfSAndrey V. Elsukov 16606951cecfSAndrey V. Elsukov /* 16619ffd0f54SLuiz Otavio O Souza * Lookup an arbitrary key @paddr of length @plen in table @tbl. 1662c8d5d308SAlexander V. Chernikov * Stores found value in @val. 1663c8d5d308SAlexander V. Chernikov * 1664c8d5d308SAlexander V. Chernikov * Returns 1 if key was found. 1665c8d5d308SAlexander V. Chernikov */ 16669f7d47b0SAlexander V. Chernikov int 166754e5669dSAndrey V. Elsukov ipfw_lookup_table(struct ip_fw_chain *ch, uint16_t tbl, uint16_t plen, 16689f7d47b0SAlexander V. Chernikov void *paddr, uint32_t *val) 16699f7d47b0SAlexander V. Chernikov { 16709f7d47b0SAlexander V. Chernikov struct table_info *ti; 16719f7d47b0SAlexander V. Chernikov 1672c8d5d308SAlexander V. Chernikov ti = KIDX_TO_TI(ch, tbl); 16739f7d47b0SAlexander V. Chernikov 16749f7d47b0SAlexander V. Chernikov return (ti->lookup(ti, paddr, plen, val)); 16759f7d47b0SAlexander V. Chernikov } 16769f7d47b0SAlexander V. Chernikov 16779f7d47b0SAlexander V. Chernikov /* 16789f7d47b0SAlexander V. Chernikov * Info/List/dump support for tables. 16799f7d47b0SAlexander V. Chernikov * 16809f7d47b0SAlexander V. Chernikov */ 16819f7d47b0SAlexander V. Chernikov 1682f1220db8SAlexander V. Chernikov /* 1683d3a4f924SAlexander V. Chernikov * High-level 'get' cmds sysctl handlers 1684d3a4f924SAlexander V. Chernikov */ 1685d3a4f924SAlexander V. Chernikov 1686d3a4f924SAlexander V. Chernikov /* 1687d3a4f924SAlexander V. Chernikov * Lists all tables currently available in kernel. 1688ac35ff17SAlexander V. Chernikov * Data layout (v0)(current): 1689d3a4f924SAlexander V. Chernikov * Request: [ ipfw_obj_lheader ], size = ipfw_obj_lheader.size 1690d3a4f924SAlexander V. Chernikov * Reply: [ ipfw_obj_lheader ipfw_xtable_info x N ] 1691d3a4f924SAlexander V. Chernikov * 1692d3a4f924SAlexander V. Chernikov * Returns 0 on success 1693d3a4f924SAlexander V. Chernikov */ 16946b988f3aSAlexander V. Chernikov static int 16956b988f3aSAlexander V. Chernikov list_tables(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 1696e822d936SAlexander V. Chernikov struct sockopt_data *sd) 1697f1220db8SAlexander V. Chernikov { 1698f1220db8SAlexander V. Chernikov struct _ipfw_obj_lheader *olh; 1699f1220db8SAlexander V. Chernikov int error; 1700f1220db8SAlexander V. Chernikov 17012d99a349SAlexander V. Chernikov olh = (struct _ipfw_obj_lheader *)ipfw_get_sopt_header(sd,sizeof(*olh)); 17022d99a349SAlexander V. Chernikov if (olh == NULL) 1703d3a4f924SAlexander V. Chernikov return (EINVAL); 170468394ec8SAlexander V. Chernikov if (sd->valsize < olh->size) 170568394ec8SAlexander V. Chernikov return (EINVAL); 1706d3a4f924SAlexander V. Chernikov 1707f1220db8SAlexander V. Chernikov IPFW_UH_RLOCK(ch); 17082d99a349SAlexander V. Chernikov error = export_tables(ch, olh, sd); 1709f1220db8SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 1710f1220db8SAlexander V. Chernikov 1711f1220db8SAlexander V. Chernikov return (error); 1712f1220db8SAlexander V. Chernikov } 1713f1220db8SAlexander V. Chernikov 1714f1220db8SAlexander V. Chernikov /* 17152d99a349SAlexander V. Chernikov * Store table info to buffer provided by @sd. 1716ac35ff17SAlexander V. Chernikov * Data layout (v0)(current): 1717d3a4f924SAlexander V. Chernikov * Request: [ ipfw_obj_header ipfw_xtable_info(empty)] 1718d3a4f924SAlexander V. Chernikov * Reply: [ ipfw_obj_header ipfw_xtable_info ] 1719d3a4f924SAlexander V. Chernikov * 1720d3a4f924SAlexander V. Chernikov * Returns 0 on success. 1721d3a4f924SAlexander V. Chernikov */ 17226b988f3aSAlexander V. Chernikov static int 17236b988f3aSAlexander V. Chernikov describe_table(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 1724e822d936SAlexander V. Chernikov struct sockopt_data *sd) 1725d3a4f924SAlexander V. Chernikov { 1726d3a4f924SAlexander V. Chernikov struct _ipfw_obj_header *oh; 1727d3a4f924SAlexander V. Chernikov struct table_config *tc; 1728d3a4f924SAlexander V. Chernikov struct tid_info ti; 1729d3a4f924SAlexander V. Chernikov size_t sz; 1730d3a4f924SAlexander V. Chernikov 1731d3a4f924SAlexander V. Chernikov sz = sizeof(*oh) + sizeof(ipfw_xtable_info); 17322d99a349SAlexander V. Chernikov oh = (struct _ipfw_obj_header *)ipfw_get_sopt_header(sd, sz); 17332d99a349SAlexander V. Chernikov if (oh == NULL) 1734d3a4f924SAlexander V. Chernikov return (EINVAL); 1735d3a4f924SAlexander V. Chernikov 1736d3a4f924SAlexander V. Chernikov objheader_to_ti(oh, &ti); 1737d3a4f924SAlexander V. Chernikov 1738d3a4f924SAlexander V. Chernikov IPFW_UH_RLOCK(ch); 1739d3a4f924SAlexander V. Chernikov if ((tc = find_table(CHAIN_TO_NI(ch), &ti)) == NULL) { 1740d3a4f924SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 1741d3a4f924SAlexander V. Chernikov return (ESRCH); 1742d3a4f924SAlexander V. Chernikov } 1743d3a4f924SAlexander V. Chernikov 1744ac35ff17SAlexander V. Chernikov export_table_info(ch, tc, (ipfw_xtable_info *)(oh + 1)); 1745d3a4f924SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 1746d3a4f924SAlexander V. Chernikov 17472d99a349SAlexander V. Chernikov return (0); 1748d3a4f924SAlexander V. Chernikov } 1749d3a4f924SAlexander V. Chernikov 1750d3a4f924SAlexander V. Chernikov /* 1751adf3b2b9SAlexander V. Chernikov * Modifies existing table. 1752adf3b2b9SAlexander V. Chernikov * Data layout (v0)(current): 1753adf3b2b9SAlexander V. Chernikov * Request: [ ipfw_obj_header ipfw_xtable_info ] 1754adf3b2b9SAlexander V. Chernikov * 1755adf3b2b9SAlexander V. Chernikov * Returns 0 on success 1756adf3b2b9SAlexander V. Chernikov */ 17576b988f3aSAlexander V. Chernikov static int 17586b988f3aSAlexander V. Chernikov modify_table(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 1759adf3b2b9SAlexander V. Chernikov struct sockopt_data *sd) 1760adf3b2b9SAlexander V. Chernikov { 1761adf3b2b9SAlexander V. Chernikov struct _ipfw_obj_header *oh; 1762adf3b2b9SAlexander V. Chernikov ipfw_xtable_info *i; 1763adf3b2b9SAlexander V. Chernikov char *tname; 1764adf3b2b9SAlexander V. Chernikov struct tid_info ti; 1765adf3b2b9SAlexander V. Chernikov struct namedobj_instance *ni; 1766adf3b2b9SAlexander V. Chernikov struct table_config *tc; 1767adf3b2b9SAlexander V. Chernikov 1768adf3b2b9SAlexander V. Chernikov if (sd->valsize != sizeof(*oh) + sizeof(ipfw_xtable_info)) 1769adf3b2b9SAlexander V. Chernikov return (EINVAL); 1770adf3b2b9SAlexander V. Chernikov 1771adf3b2b9SAlexander V. Chernikov oh = (struct _ipfw_obj_header *)sd->kbuf; 1772adf3b2b9SAlexander V. Chernikov i = (ipfw_xtable_info *)(oh + 1); 1773adf3b2b9SAlexander V. Chernikov 1774adf3b2b9SAlexander V. Chernikov /* 1775adf3b2b9SAlexander V. Chernikov * Verify user-supplied strings. 1776adf3b2b9SAlexander V. Chernikov * Check for null-terminated/zero-length strings/ 1777adf3b2b9SAlexander V. Chernikov */ 1778adf3b2b9SAlexander V. Chernikov tname = oh->ntlv.name; 1779f81431ccSAndrey V. Elsukov if (check_table_name(tname) != 0) 1780adf3b2b9SAlexander V. Chernikov return (EINVAL); 1781adf3b2b9SAlexander V. Chernikov 1782adf3b2b9SAlexander V. Chernikov objheader_to_ti(oh, &ti); 1783adf3b2b9SAlexander V. Chernikov ti.type = i->type; 1784adf3b2b9SAlexander V. Chernikov 1785adf3b2b9SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 1786adf3b2b9SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 1787adf3b2b9SAlexander V. Chernikov if ((tc = find_table(ni, &ti)) == NULL) { 1788adf3b2b9SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1789adf3b2b9SAlexander V. Chernikov return (ESRCH); 1790adf3b2b9SAlexander V. Chernikov } 1791fd0869d5SAlexander V. Chernikov 1792fd0869d5SAlexander V. Chernikov /* Do not support any modifications for readonly tables */ 1793fd0869d5SAlexander V. Chernikov if ((tc->ta->flags & TA_FLAG_READONLY) != 0) { 1794fd0869d5SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1795fd0869d5SAlexander V. Chernikov return (EACCES); 1796fd0869d5SAlexander V. Chernikov } 1797fd0869d5SAlexander V. Chernikov 1798adf3b2b9SAlexander V. Chernikov if ((i->mflags & IPFW_TMFLAGS_LIMIT) != 0) 1799adf3b2b9SAlexander V. Chernikov tc->limit = i->limit; 18004f43138aSAlexander V. Chernikov if ((i->mflags & IPFW_TMFLAGS_LOCK) != 0) 18014f43138aSAlexander V. Chernikov tc->locked = ((i->flags & IPFW_TGFLAGS_LOCKED) != 0); 1802adf3b2b9SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1803adf3b2b9SAlexander V. Chernikov 1804adf3b2b9SAlexander V. Chernikov return (0); 1805adf3b2b9SAlexander V. Chernikov } 1806adf3b2b9SAlexander V. Chernikov 1807adf3b2b9SAlexander V. Chernikov /* 18089490a627SAlexander V. Chernikov * Creates new table. 1809ac35ff17SAlexander V. Chernikov * Data layout (v0)(current): 18109490a627SAlexander V. Chernikov * Request: [ ipfw_obj_header ipfw_xtable_info ] 18119490a627SAlexander V. Chernikov * 18129490a627SAlexander V. Chernikov * Returns 0 on success 18139490a627SAlexander V. Chernikov */ 18146b988f3aSAlexander V. Chernikov static int 18156b988f3aSAlexander V. Chernikov create_table(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 1816ac35ff17SAlexander V. Chernikov struct sockopt_data *sd) 18179490a627SAlexander V. Chernikov { 18189490a627SAlexander V. Chernikov struct _ipfw_obj_header *oh; 18199490a627SAlexander V. Chernikov ipfw_xtable_info *i; 18209490a627SAlexander V. Chernikov char *tname, *aname; 18219490a627SAlexander V. Chernikov struct tid_info ti; 18229490a627SAlexander V. Chernikov struct namedobj_instance *ni; 18239490a627SAlexander V. Chernikov 1824ac35ff17SAlexander V. Chernikov if (sd->valsize != sizeof(*oh) + sizeof(ipfw_xtable_info)) 18259490a627SAlexander V. Chernikov return (EINVAL); 18269490a627SAlexander V. Chernikov 1827ac35ff17SAlexander V. Chernikov oh = (struct _ipfw_obj_header *)sd->kbuf; 18289490a627SAlexander V. Chernikov i = (ipfw_xtable_info *)(oh + 1); 18299490a627SAlexander V. Chernikov 18309490a627SAlexander V. Chernikov /* 18319490a627SAlexander V. Chernikov * Verify user-supplied strings. 18322d99a349SAlexander V. Chernikov * Check for null-terminated/zero-length strings/ 18339490a627SAlexander V. Chernikov */ 1834ac35ff17SAlexander V. Chernikov tname = oh->ntlv.name; 18359490a627SAlexander V. Chernikov aname = i->algoname; 1836f81431ccSAndrey V. Elsukov if (check_table_name(tname) != 0 || 18379490a627SAlexander V. Chernikov strnlen(aname, sizeof(i->algoname)) == sizeof(i->algoname)) 18389490a627SAlexander V. Chernikov return (EINVAL); 18399490a627SAlexander V. Chernikov 18409490a627SAlexander V. Chernikov if (aname[0] == '\0') { 18419490a627SAlexander V. Chernikov /* Use default algorithm */ 18429490a627SAlexander V. Chernikov aname = NULL; 18439490a627SAlexander V. Chernikov } 18449490a627SAlexander V. Chernikov 18459490a627SAlexander V. Chernikov objheader_to_ti(oh, &ti); 1846ac35ff17SAlexander V. Chernikov ti.type = i->type; 18479490a627SAlexander V. Chernikov 18489490a627SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 18499490a627SAlexander V. Chernikov 18509490a627SAlexander V. Chernikov IPFW_UH_RLOCK(ch); 1851038263c3SAlexander V. Chernikov if (find_table(ni, &ti) != NULL) { 18529490a627SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 18539490a627SAlexander V. Chernikov return (EEXIST); 18549490a627SAlexander V. Chernikov } 18559490a627SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 18569490a627SAlexander V. Chernikov 1857867708f7SAlexander V. Chernikov return (create_table_internal(ch, &ti, aname, i, NULL, 0)); 1858db785d31SAlexander V. Chernikov } 1859db785d31SAlexander V. Chernikov 1860db785d31SAlexander V. Chernikov /* 1861db785d31SAlexander V. Chernikov * Creates new table based on @ti and @aname. 1862db785d31SAlexander V. Chernikov * 1863db785d31SAlexander V. Chernikov * Assume @aname to be checked and valid. 1864867708f7SAlexander V. Chernikov * Stores allocated table kidx inside @pkidx (if non-NULL). 18650468c5baSAlexander V. Chernikov * Reference created table if @compat is non-zero. 1866db785d31SAlexander V. Chernikov * 1867db785d31SAlexander V. Chernikov * Returns 0 on success. 1868db785d31SAlexander V. Chernikov */ 1869db785d31SAlexander V. Chernikov static int 1870db785d31SAlexander V. Chernikov create_table_internal(struct ip_fw_chain *ch, struct tid_info *ti, 1871867708f7SAlexander V. Chernikov char *aname, ipfw_xtable_info *i, uint16_t *pkidx, int compat) 1872db785d31SAlexander V. Chernikov { 1873db785d31SAlexander V. Chernikov struct namedobj_instance *ni; 1874c8d5d308SAlexander V. Chernikov struct table_config *tc, *tc_new, *tmp; 1875db785d31SAlexander V. Chernikov struct table_algo *ta; 1876db785d31SAlexander V. Chernikov uint16_t kidx; 1877db785d31SAlexander V. Chernikov 1878db785d31SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 1879db785d31SAlexander V. Chernikov 1880db785d31SAlexander V. Chernikov ta = find_table_algo(CHAIN_TO_TCFG(ch), ti, aname); 18819490a627SAlexander V. Chernikov if (ta == NULL) 18829490a627SAlexander V. Chernikov return (ENOTSUP); 18839490a627SAlexander V. Chernikov 18840cba2b28SAlexander V. Chernikov tc = alloc_table_config(ch, ti, ta, aname, i->tflags); 18854c0c07a5SAlexander V. Chernikov if (tc == NULL) 18869490a627SAlexander V. Chernikov return (ENOMEM); 18879490a627SAlexander V. Chernikov 18880cba2b28SAlexander V. Chernikov tc->vmask = i->vmask; 18894c0c07a5SAlexander V. Chernikov tc->limit = i->limit; 1890fd0869d5SAlexander V. Chernikov if (ta->flags & TA_FLAG_READONLY) 1891fd0869d5SAlexander V. Chernikov tc->locked = 1; 1892fd0869d5SAlexander V. Chernikov else 18934f43138aSAlexander V. Chernikov tc->locked = (i->flags & IPFW_TGFLAGS_LOCKED) != 0; 18944c0c07a5SAlexander V. Chernikov 18959490a627SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 1896db785d31SAlexander V. Chernikov 1897db785d31SAlexander V. Chernikov /* Check if table has been already created */ 18980468c5baSAlexander V. Chernikov tc_new = find_table(ni, ti); 18990468c5baSAlexander V. Chernikov if (tc_new != NULL) { 19000468c5baSAlexander V. Chernikov 19010468c5baSAlexander V. Chernikov /* 19020468c5baSAlexander V. Chernikov * Compat: do not fail if we're 19030468c5baSAlexander V. Chernikov * requesting to create existing table 19040cba2b28SAlexander V. Chernikov * which has the same type 19050468c5baSAlexander V. Chernikov */ 190674b22066SAlexander V. Chernikov if (compat == 0 || tc_new->no.subtype != tc->no.subtype) { 1907db785d31SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1908db785d31SAlexander V. Chernikov free_table_config(ni, tc); 1909db785d31SAlexander V. Chernikov return (EEXIST); 1910db785d31SAlexander V. Chernikov } 1911db785d31SAlexander V. Chernikov 19120468c5baSAlexander V. Chernikov /* Exchange tc and tc_new for proper refcounting & freeing */ 19130468c5baSAlexander V. Chernikov tmp = tc; 19140468c5baSAlexander V. Chernikov tc = tc_new; 19150468c5baSAlexander V. Chernikov tc_new = tmp; 19160468c5baSAlexander V. Chernikov } else { 19170468c5baSAlexander V. Chernikov /* New table */ 1918ac35ff17SAlexander V. Chernikov if (ipfw_objhash_alloc_idx(ni, &kidx) != 0) { 19199490a627SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1920db785d31SAlexander V. Chernikov printf("Unable to allocate table index." 1921db785d31SAlexander V. Chernikov " Consider increasing net.inet.ip.fw.tables_max"); 19229490a627SAlexander V. Chernikov free_table_config(ni, tc); 19239490a627SAlexander V. Chernikov return (EBUSY); 19249490a627SAlexander V. Chernikov } 19259490a627SAlexander V. Chernikov tc->no.kidx = kidx; 192674b22066SAlexander V. Chernikov tc->no.etlv = IPFW_TLV_TBL_NAME; 19279490a627SAlexander V. Chernikov 19289490a627SAlexander V. Chernikov IPFW_WLOCK(ch); 19299490a627SAlexander V. Chernikov link_table(ch, tc); 19309490a627SAlexander V. Chernikov IPFW_WUNLOCK(ch); 19310468c5baSAlexander V. Chernikov } 19320468c5baSAlexander V. Chernikov 19330468c5baSAlexander V. Chernikov if (compat != 0) 19340468c5baSAlexander V. Chernikov tc->no.refcnt++; 19350468c5baSAlexander V. Chernikov if (pkidx != NULL) 19360468c5baSAlexander V. Chernikov *pkidx = tc->no.kidx; 19379490a627SAlexander V. Chernikov 19389490a627SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 19399490a627SAlexander V. Chernikov 19400468c5baSAlexander V. Chernikov if (tc_new != NULL) 19410468c5baSAlexander V. Chernikov free_table_config(ni, tc_new); 19420468c5baSAlexander V. Chernikov 19439490a627SAlexander V. Chernikov return (0); 19449490a627SAlexander V. Chernikov } 19459490a627SAlexander V. Chernikov 194646d52008SAlexander V. Chernikov static void 194746d52008SAlexander V. Chernikov ntlv_to_ti(ipfw_obj_ntlv *ntlv, struct tid_info *ti) 1948d3a4f924SAlexander V. Chernikov { 1949d3a4f924SAlexander V. Chernikov 1950d3a4f924SAlexander V. Chernikov memset(ti, 0, sizeof(struct tid_info)); 195146d52008SAlexander V. Chernikov ti->set = ntlv->set; 195246d52008SAlexander V. Chernikov ti->uidx = ntlv->idx; 195346d52008SAlexander V. Chernikov ti->tlvs = ntlv; 195446d52008SAlexander V. Chernikov ti->tlen = ntlv->head.length; 195546d52008SAlexander V. Chernikov } 195646d52008SAlexander V. Chernikov 195746d52008SAlexander V. Chernikov static void 195846d52008SAlexander V. Chernikov objheader_to_ti(struct _ipfw_obj_header *oh, struct tid_info *ti) 195946d52008SAlexander V. Chernikov { 196046d52008SAlexander V. Chernikov 196146d52008SAlexander V. Chernikov ntlv_to_ti(&oh->ntlv, ti); 1962d3a4f924SAlexander V. Chernikov } 1963d3a4f924SAlexander V. Chernikov 196474b22066SAlexander V. Chernikov struct namedobj_instance * 196574b22066SAlexander V. Chernikov ipfw_get_table_objhash(struct ip_fw_chain *ch) 196674b22066SAlexander V. Chernikov { 196774b22066SAlexander V. Chernikov 196874b22066SAlexander V. Chernikov return (CHAIN_TO_NI(ch)); 196974b22066SAlexander V. Chernikov } 197074b22066SAlexander V. Chernikov 197135e1bbd0SAlexander V. Chernikov /* 197235e1bbd0SAlexander V. Chernikov * Exports basic table info as name TLV. 197335e1bbd0SAlexander V. Chernikov * Used inside dump_static_rules() to provide info 197435e1bbd0SAlexander V. Chernikov * about all tables referenced by current ruleset. 197535e1bbd0SAlexander V. Chernikov * 197635e1bbd0SAlexander V. Chernikov * Returns 0 on success. 197735e1bbd0SAlexander V. Chernikov */ 1978563b5ab1SAlexander V. Chernikov int 1979563b5ab1SAlexander V. Chernikov ipfw_export_table_ntlv(struct ip_fw_chain *ch, uint16_t kidx, 1980563b5ab1SAlexander V. Chernikov struct sockopt_data *sd) 1981563b5ab1SAlexander V. Chernikov { 1982563b5ab1SAlexander V. Chernikov struct namedobj_instance *ni; 1983563b5ab1SAlexander V. Chernikov struct named_object *no; 1984563b5ab1SAlexander V. Chernikov ipfw_obj_ntlv *ntlv; 1985563b5ab1SAlexander V. Chernikov 1986563b5ab1SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 1987563b5ab1SAlexander V. Chernikov 1988ac35ff17SAlexander V. Chernikov no = ipfw_objhash_lookup_kidx(ni, kidx); 1989563b5ab1SAlexander V. Chernikov KASSERT(no != NULL, ("invalid table kidx passed")); 1990563b5ab1SAlexander V. Chernikov 1991563b5ab1SAlexander V. Chernikov ntlv = (ipfw_obj_ntlv *)ipfw_get_sopt_space(sd, sizeof(*ntlv)); 1992563b5ab1SAlexander V. Chernikov if (ntlv == NULL) 1993563b5ab1SAlexander V. Chernikov return (ENOMEM); 1994563b5ab1SAlexander V. Chernikov 1995563b5ab1SAlexander V. Chernikov ntlv->head.type = IPFW_TLV_TBL_NAME; 1996563b5ab1SAlexander V. Chernikov ntlv->head.length = sizeof(*ntlv); 1997563b5ab1SAlexander V. Chernikov ntlv->idx = no->kidx; 1998563b5ab1SAlexander V. Chernikov strlcpy(ntlv->name, no->name, sizeof(ntlv->name)); 1999563b5ab1SAlexander V. Chernikov 2000563b5ab1SAlexander V. Chernikov return (0); 2001563b5ab1SAlexander V. Chernikov } 2002563b5ab1SAlexander V. Chernikov 2003d3b00c08SAlexander V. Chernikov struct dump_args { 20040cba2b28SAlexander V. Chernikov struct ip_fw_chain *ch; 2005d3b00c08SAlexander V. Chernikov struct table_info *ti; 2006d3b00c08SAlexander V. Chernikov struct table_config *tc; 2007d3b00c08SAlexander V. Chernikov struct sockopt_data *sd; 2008d3b00c08SAlexander V. Chernikov uint32_t cnt; 2009d3b00c08SAlexander V. Chernikov uint16_t uidx; 2010d3b00c08SAlexander V. Chernikov int error; 2011d3b00c08SAlexander V. Chernikov uint32_t size; 20124dff4ae0SAlexander V. Chernikov ipfw_table_entry *ent; 20134dff4ae0SAlexander V. Chernikov ta_foreach_f *f; 20144dff4ae0SAlexander V. Chernikov void *farg; 2015d3b00c08SAlexander V. Chernikov ipfw_obj_tentry tent; 2016d3b00c08SAlexander V. Chernikov }; 2017d3b00c08SAlexander V. Chernikov 2018d3b00c08SAlexander V. Chernikov static int 2019d3b00c08SAlexander V. Chernikov count_ext_entries(void *e, void *arg) 2020d3b00c08SAlexander V. Chernikov { 2021d3b00c08SAlexander V. Chernikov struct dump_args *da; 2022d3b00c08SAlexander V. Chernikov 2023d3b00c08SAlexander V. Chernikov da = (struct dump_args *)arg; 2024d3b00c08SAlexander V. Chernikov da->cnt++; 2025d3b00c08SAlexander V. Chernikov 2026d3b00c08SAlexander V. Chernikov return (0); 2027d3b00c08SAlexander V. Chernikov } 2028d3b00c08SAlexander V. Chernikov 2029d3b00c08SAlexander V. Chernikov /* 2030d3b00c08SAlexander V. Chernikov * Gets number of items from table either using 2031d3b00c08SAlexander V. Chernikov * internal counter or calling algo callback for 2032d3b00c08SAlexander V. Chernikov * externally-managed tables. 2033d3b00c08SAlexander V. Chernikov * 2034d3b00c08SAlexander V. Chernikov * Returns number of records. 2035d3b00c08SAlexander V. Chernikov */ 2036d3b00c08SAlexander V. Chernikov static uint32_t 2037d3b00c08SAlexander V. Chernikov table_get_count(struct ip_fw_chain *ch, struct table_config *tc) 2038d3b00c08SAlexander V. Chernikov { 2039d3b00c08SAlexander V. Chernikov struct table_info *ti; 2040d3b00c08SAlexander V. Chernikov struct table_algo *ta; 2041d3b00c08SAlexander V. Chernikov struct dump_args da; 2042d3b00c08SAlexander V. Chernikov 2043d3b00c08SAlexander V. Chernikov ti = KIDX_TO_TI(ch, tc->no.kidx); 2044d3b00c08SAlexander V. Chernikov ta = tc->ta; 2045d3b00c08SAlexander V. Chernikov 2046d3b00c08SAlexander V. Chernikov /* Use internal counter for self-managed tables */ 2047d3b00c08SAlexander V. Chernikov if ((ta->flags & TA_FLAG_READONLY) == 0) 2048d3b00c08SAlexander V. Chernikov return (tc->count); 2049d3b00c08SAlexander V. Chernikov 2050d3b00c08SAlexander V. Chernikov /* Use callback to quickly get number of items */ 2051d3b00c08SAlexander V. Chernikov if ((ta->flags & TA_FLAG_EXTCOUNTER) != 0) 2052d3b00c08SAlexander V. Chernikov return (ta->get_count(tc->astate, ti)); 2053d3b00c08SAlexander V. Chernikov 2054d3b00c08SAlexander V. Chernikov /* Count number of iterms ourselves */ 2055d3b00c08SAlexander V. Chernikov memset(&da, 0, sizeof(da)); 2056d3b00c08SAlexander V. Chernikov ta->foreach(tc->astate, ti, count_ext_entries, &da); 2057d3b00c08SAlexander V. Chernikov 2058d3b00c08SAlexander V. Chernikov return (da.cnt); 2059d3b00c08SAlexander V. Chernikov } 2060f99fbf96SAlexander V. Chernikov 2061f99fbf96SAlexander V. Chernikov /* 206235e1bbd0SAlexander V. Chernikov * Exports table @tc info into standard ipfw_xtable_info format. 206335e1bbd0SAlexander V. Chernikov */ 20649f7d47b0SAlexander V. Chernikov static void 2065ac35ff17SAlexander V. Chernikov export_table_info(struct ip_fw_chain *ch, struct table_config *tc, 2066ac35ff17SAlexander V. Chernikov ipfw_xtable_info *i) 20679f7d47b0SAlexander V. Chernikov { 2068ac35ff17SAlexander V. Chernikov struct table_info *ti; 20695f379342SAlexander V. Chernikov struct table_algo *ta; 20709f7d47b0SAlexander V. Chernikov 207174b22066SAlexander V. Chernikov i->type = tc->no.subtype; 2072914bffb6SAlexander V. Chernikov i->tflags = tc->tflags; 20730cba2b28SAlexander V. Chernikov i->vmask = tc->vmask; 20749f7d47b0SAlexander V. Chernikov i->set = tc->no.set; 20759f7d47b0SAlexander V. Chernikov i->kidx = tc->no.kidx; 20769f7d47b0SAlexander V. Chernikov i->refcnt = tc->no.refcnt; 2077d3b00c08SAlexander V. Chernikov i->count = table_get_count(ch, tc); 20784c0c07a5SAlexander V. Chernikov i->limit = tc->limit; 20794f43138aSAlexander V. Chernikov i->flags |= (tc->locked != 0) ? IPFW_TGFLAGS_LOCKED : 0; 208036738284SAlexander V. Chernikov i->size = i->count * sizeof(ipfw_obj_tentry); 2081f1220db8SAlexander V. Chernikov i->size += sizeof(ipfw_obj_header) + sizeof(ipfw_xtable_info); 20829f7d47b0SAlexander V. Chernikov strlcpy(i->tablename, tc->tablename, sizeof(i->tablename)); 2083ac35ff17SAlexander V. Chernikov ti = KIDX_TO_TI(ch, tc->no.kidx); 20845f379342SAlexander V. Chernikov ta = tc->ta; 20855f379342SAlexander V. Chernikov if (ta->print_config != NULL) { 20865f379342SAlexander V. Chernikov /* Use algo function to print table config to string */ 20875f379342SAlexander V. Chernikov ta->print_config(tc->astate, ti, i->algoname, 2088ac35ff17SAlexander V. Chernikov sizeof(i->algoname)); 2089ac35ff17SAlexander V. Chernikov } else 20905f379342SAlexander V. Chernikov strlcpy(i->algoname, ta->name, sizeof(i->algoname)); 20915f379342SAlexander V. Chernikov /* Dump algo-specific data, if possible */ 20925f379342SAlexander V. Chernikov if (ta->dump_tinfo != NULL) { 20935f379342SAlexander V. Chernikov ta->dump_tinfo(tc->astate, ti, &i->ta_info); 20945f379342SAlexander V. Chernikov i->ta_info.flags |= IPFW_TATFLAGS_DATA; 20955f379342SAlexander V. Chernikov } 20969f7d47b0SAlexander V. Chernikov } 20979f7d47b0SAlexander V. Chernikov 2098ac35ff17SAlexander V. Chernikov struct dump_table_args { 2099ac35ff17SAlexander V. Chernikov struct ip_fw_chain *ch; 2100ac35ff17SAlexander V. Chernikov struct sockopt_data *sd; 2101ac35ff17SAlexander V. Chernikov }; 2102ac35ff17SAlexander V. Chernikov 2103b309f085SAndrey V. Elsukov static int 21049f7d47b0SAlexander V. Chernikov export_table_internal(struct namedobj_instance *ni, struct named_object *no, 21059f7d47b0SAlexander V. Chernikov void *arg) 21063b3a8eb9SGleb Smirnoff { 21079f7d47b0SAlexander V. Chernikov ipfw_xtable_info *i; 2108ac35ff17SAlexander V. Chernikov struct dump_table_args *dta; 21093b3a8eb9SGleb Smirnoff 2110ac35ff17SAlexander V. Chernikov dta = (struct dump_table_args *)arg; 2111ac35ff17SAlexander V. Chernikov 2112ac35ff17SAlexander V. Chernikov i = (ipfw_xtable_info *)ipfw_get_sopt_space(dta->sd, sizeof(*i)); 21137a6ab8f1SPedro F. Giffuni KASSERT(i != NULL, ("previously checked buffer is not enough")); 21149f7d47b0SAlexander V. Chernikov 2115ac35ff17SAlexander V. Chernikov export_table_info(dta->ch, (struct table_config *)no, i); 2116b309f085SAndrey V. Elsukov return (0); 21179f7d47b0SAlexander V. Chernikov } 21189f7d47b0SAlexander V. Chernikov 2119f1220db8SAlexander V. Chernikov /* 2120f1220db8SAlexander V. Chernikov * Export all tables as ipfw_xtable_info structures to 21212d99a349SAlexander V. Chernikov * storage provided by @sd. 212228ea4fa3SAlexander V. Chernikov * 212328ea4fa3SAlexander V. Chernikov * If supplied buffer is too small, fills in required size 212428ea4fa3SAlexander V. Chernikov * and returns ENOMEM. 2125f1220db8SAlexander V. Chernikov * Returns 0 on success. 2126f1220db8SAlexander V. Chernikov */ 2127f1220db8SAlexander V. Chernikov static int 21282d99a349SAlexander V. Chernikov export_tables(struct ip_fw_chain *ch, ipfw_obj_lheader *olh, 21292d99a349SAlexander V. Chernikov struct sockopt_data *sd) 21309f7d47b0SAlexander V. Chernikov { 21319f7d47b0SAlexander V. Chernikov uint32_t size; 21329f7d47b0SAlexander V. Chernikov uint32_t count; 2133ac35ff17SAlexander V. Chernikov struct dump_table_args dta; 21349f7d47b0SAlexander V. Chernikov 21359f7d47b0SAlexander V. Chernikov count = ipfw_objhash_count(CHAIN_TO_NI(ch)); 21369f7d47b0SAlexander V. Chernikov size = count * sizeof(ipfw_xtable_info) + sizeof(ipfw_obj_lheader); 21372d99a349SAlexander V. Chernikov 21382d99a349SAlexander V. Chernikov /* Fill in header regadless of buffer size */ 2139f1220db8SAlexander V. Chernikov olh->count = count; 2140f1220db8SAlexander V. Chernikov olh->objsize = sizeof(ipfw_xtable_info); 21412d99a349SAlexander V. Chernikov 21422d99a349SAlexander V. Chernikov if (size > olh->size) { 21432d99a349SAlexander V. Chernikov olh->size = size; 21449f7d47b0SAlexander V. Chernikov return (ENOMEM); 2145f1220db8SAlexander V. Chernikov } 214668394ec8SAlexander V. Chernikov 21479f7d47b0SAlexander V. Chernikov olh->size = size; 21482d99a349SAlexander V. Chernikov 2149ac35ff17SAlexander V. Chernikov dta.ch = ch; 2150ac35ff17SAlexander V. Chernikov dta.sd = sd; 2151ac35ff17SAlexander V. Chernikov 2152ac35ff17SAlexander V. Chernikov ipfw_objhash_foreach(CHAIN_TO_NI(ch), export_table_internal, &dta); 21539f7d47b0SAlexander V. Chernikov 21543b3a8eb9SGleb Smirnoff return (0); 21553b3a8eb9SGleb Smirnoff } 21563b3a8eb9SGleb Smirnoff 2157f99fbf96SAlexander V. Chernikov /* 2158f99fbf96SAlexander V. Chernikov * Dumps all table data 2159f99fbf96SAlexander V. Chernikov * Data layout (v1)(current): 2160f99fbf96SAlexander V. Chernikov * Request: [ ipfw_obj_header ], size = ipfw_xtable_info.size 2161f99fbf96SAlexander V. Chernikov * Reply: [ ipfw_obj_header ipfw_xtable_info ipfw_obj_tentry x N ] 2162f99fbf96SAlexander V. Chernikov * 2163f99fbf96SAlexander V. Chernikov * Returns 0 on success 2164f99fbf96SAlexander V. Chernikov */ 2165f99fbf96SAlexander V. Chernikov static int 21666b988f3aSAlexander V. Chernikov dump_table_v1(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 21676b988f3aSAlexander V. Chernikov struct sockopt_data *sd) 2168f99fbf96SAlexander V. Chernikov { 2169f99fbf96SAlexander V. Chernikov struct _ipfw_obj_header *oh; 2170f99fbf96SAlexander V. Chernikov ipfw_xtable_info *i; 2171f99fbf96SAlexander V. Chernikov struct tid_info ti; 2172f99fbf96SAlexander V. Chernikov struct table_config *tc; 2173f99fbf96SAlexander V. Chernikov struct table_algo *ta; 2174f99fbf96SAlexander V. Chernikov struct dump_args da; 2175f99fbf96SAlexander V. Chernikov uint32_t sz; 2176f99fbf96SAlexander V. Chernikov 2177f99fbf96SAlexander V. Chernikov sz = sizeof(ipfw_obj_header) + sizeof(ipfw_xtable_info); 2178f99fbf96SAlexander V. Chernikov oh = (struct _ipfw_obj_header *)ipfw_get_sopt_header(sd, sz); 2179f99fbf96SAlexander V. Chernikov if (oh == NULL) 2180f99fbf96SAlexander V. Chernikov return (EINVAL); 2181f99fbf96SAlexander V. Chernikov 2182f99fbf96SAlexander V. Chernikov i = (ipfw_xtable_info *)(oh + 1); 2183f99fbf96SAlexander V. Chernikov objheader_to_ti(oh, &ti); 2184f99fbf96SAlexander V. Chernikov 2185f99fbf96SAlexander V. Chernikov IPFW_UH_RLOCK(ch); 2186f99fbf96SAlexander V. Chernikov if ((tc = find_table(CHAIN_TO_NI(ch), &ti)) == NULL) { 2187f99fbf96SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 2188f99fbf96SAlexander V. Chernikov return (ESRCH); 2189f99fbf96SAlexander V. Chernikov } 2190f99fbf96SAlexander V. Chernikov export_table_info(ch, tc, i); 2191f99fbf96SAlexander V. Chernikov 2192f99fbf96SAlexander V. Chernikov if (sd->valsize < i->size) { 2193f99fbf96SAlexander V. Chernikov 2194f99fbf96SAlexander V. Chernikov /* 2195f99fbf96SAlexander V. Chernikov * Submitted buffer size is not enough. 2196f99fbf96SAlexander V. Chernikov * WE've already filled in @i structure with 2197f99fbf96SAlexander V. Chernikov * relevant table info including size, so we 2198f99fbf96SAlexander V. Chernikov * can return. Buffer will be flushed automatically. 2199f99fbf96SAlexander V. Chernikov */ 2200f99fbf96SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 2201f99fbf96SAlexander V. Chernikov return (ENOMEM); 2202f99fbf96SAlexander V. Chernikov } 2203f99fbf96SAlexander V. Chernikov 2204f99fbf96SAlexander V. Chernikov /* 2205f99fbf96SAlexander V. Chernikov * Do the actual dump in eXtended format 2206f99fbf96SAlexander V. Chernikov */ 2207f99fbf96SAlexander V. Chernikov memset(&da, 0, sizeof(da)); 22080cba2b28SAlexander V. Chernikov da.ch = ch; 2209f99fbf96SAlexander V. Chernikov da.ti = KIDX_TO_TI(ch, tc->no.kidx); 2210f99fbf96SAlexander V. Chernikov da.tc = tc; 2211f99fbf96SAlexander V. Chernikov da.sd = sd; 2212f99fbf96SAlexander V. Chernikov 2213f99fbf96SAlexander V. Chernikov ta = tc->ta; 2214f99fbf96SAlexander V. Chernikov 2215f99fbf96SAlexander V. Chernikov ta->foreach(tc->astate, da.ti, dump_table_tentry, &da); 2216f99fbf96SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 2217f99fbf96SAlexander V. Chernikov 2218f99fbf96SAlexander V. Chernikov return (da.error); 2219f99fbf96SAlexander V. Chernikov } 2220f99fbf96SAlexander V. Chernikov 2221f99fbf96SAlexander V. Chernikov /* 2222f99fbf96SAlexander V. Chernikov * Dumps all table data 2223f99fbf96SAlexander V. Chernikov * Data layout (version 0)(legacy): 2224f99fbf96SAlexander V. Chernikov * Request: [ ipfw_xtable ], size = IP_FW_TABLE_XGETSIZE() 2225f99fbf96SAlexander V. Chernikov * Reply: [ ipfw_xtable ipfw_table_xentry x N ] 2226f99fbf96SAlexander V. Chernikov * 2227f99fbf96SAlexander V. Chernikov * Returns 0 on success 2228f99fbf96SAlexander V. Chernikov */ 2229f99fbf96SAlexander V. Chernikov static int 22306b988f3aSAlexander V. Chernikov dump_table_v0(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 22316b988f3aSAlexander V. Chernikov struct sockopt_data *sd) 2232f99fbf96SAlexander V. Chernikov { 2233f99fbf96SAlexander V. Chernikov ipfw_xtable *xtbl; 2234f99fbf96SAlexander V. Chernikov struct tid_info ti; 2235f99fbf96SAlexander V. Chernikov struct table_config *tc; 2236f99fbf96SAlexander V. Chernikov struct table_algo *ta; 2237f99fbf96SAlexander V. Chernikov struct dump_args da; 2238d3b00c08SAlexander V. Chernikov size_t sz, count; 2239f99fbf96SAlexander V. Chernikov 2240f99fbf96SAlexander V. Chernikov xtbl = (ipfw_xtable *)ipfw_get_sopt_header(sd, sizeof(ipfw_xtable)); 2241f99fbf96SAlexander V. Chernikov if (xtbl == NULL) 2242f99fbf96SAlexander V. Chernikov return (EINVAL); 2243f99fbf96SAlexander V. Chernikov 2244f99fbf96SAlexander V. Chernikov memset(&ti, 0, sizeof(ti)); 2245f99fbf96SAlexander V. Chernikov ti.uidx = xtbl->tbl; 2246f99fbf96SAlexander V. Chernikov 2247f99fbf96SAlexander V. Chernikov IPFW_UH_RLOCK(ch); 2248f99fbf96SAlexander V. Chernikov if ((tc = find_table(CHAIN_TO_NI(ch), &ti)) == NULL) { 2249f99fbf96SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 2250f99fbf96SAlexander V. Chernikov return (0); 2251f99fbf96SAlexander V. Chernikov } 2252d3b00c08SAlexander V. Chernikov count = table_get_count(ch, tc); 2253d3b00c08SAlexander V. Chernikov sz = count * sizeof(ipfw_table_xentry) + sizeof(ipfw_xtable); 2254f99fbf96SAlexander V. Chernikov 2255d3b00c08SAlexander V. Chernikov xtbl->cnt = count; 2256f99fbf96SAlexander V. Chernikov xtbl->size = sz; 225774b22066SAlexander V. Chernikov xtbl->type = tc->no.subtype; 2258f99fbf96SAlexander V. Chernikov xtbl->tbl = ti.uidx; 2259f99fbf96SAlexander V. Chernikov 2260f99fbf96SAlexander V. Chernikov if (sd->valsize < sz) { 2261f99fbf96SAlexander V. Chernikov 2262f99fbf96SAlexander V. Chernikov /* 2263f99fbf96SAlexander V. Chernikov * Submitted buffer size is not enough. 2264f99fbf96SAlexander V. Chernikov * WE've already filled in @i structure with 2265f99fbf96SAlexander V. Chernikov * relevant table info including size, so we 2266f99fbf96SAlexander V. Chernikov * can return. Buffer will be flushed automatically. 2267f99fbf96SAlexander V. Chernikov */ 2268f99fbf96SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 2269f99fbf96SAlexander V. Chernikov return (ENOMEM); 2270f99fbf96SAlexander V. Chernikov } 2271f99fbf96SAlexander V. Chernikov 2272f99fbf96SAlexander V. Chernikov /* Do the actual dump in eXtended format */ 2273f99fbf96SAlexander V. Chernikov memset(&da, 0, sizeof(da)); 22740cba2b28SAlexander V. Chernikov da.ch = ch; 2275f99fbf96SAlexander V. Chernikov da.ti = KIDX_TO_TI(ch, tc->no.kidx); 2276f99fbf96SAlexander V. Chernikov da.tc = tc; 2277f99fbf96SAlexander V. Chernikov da.sd = sd; 2278f99fbf96SAlexander V. Chernikov 2279f99fbf96SAlexander V. Chernikov ta = tc->ta; 2280f99fbf96SAlexander V. Chernikov 2281f99fbf96SAlexander V. Chernikov ta->foreach(tc->astate, da.ti, dump_table_xentry, &da); 2282f99fbf96SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 2283f99fbf96SAlexander V. Chernikov 2284f99fbf96SAlexander V. Chernikov return (0); 2285f99fbf96SAlexander V. Chernikov } 2286f99fbf96SAlexander V. Chernikov 228781d3153dSAlexander V. Chernikov /* 2288e822d936SAlexander V. Chernikov * Legacy function to retrieve number of items in table. 2289e822d936SAlexander V. Chernikov */ 22906b988f3aSAlexander V. Chernikov static int 22916b988f3aSAlexander V. Chernikov get_table_size(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 2292e822d936SAlexander V. Chernikov struct sockopt_data *sd) 2293e822d936SAlexander V. Chernikov { 2294e822d936SAlexander V. Chernikov uint32_t *tbl; 2295e822d936SAlexander V. Chernikov struct tid_info ti; 2296e822d936SAlexander V. Chernikov size_t sz; 2297e822d936SAlexander V. Chernikov int error; 2298e822d936SAlexander V. Chernikov 2299e822d936SAlexander V. Chernikov sz = sizeof(*op3) + sizeof(uint32_t); 2300e822d936SAlexander V. Chernikov op3 = (ip_fw3_opheader *)ipfw_get_sopt_header(sd, sz); 2301e822d936SAlexander V. Chernikov if (op3 == NULL) 2302e822d936SAlexander V. Chernikov return (EINVAL); 2303e822d936SAlexander V. Chernikov 2304e822d936SAlexander V. Chernikov tbl = (uint32_t *)(op3 + 1); 2305e822d936SAlexander V. Chernikov memset(&ti, 0, sizeof(ti)); 2306e822d936SAlexander V. Chernikov ti.uidx = *tbl; 2307e822d936SAlexander V. Chernikov IPFW_UH_RLOCK(ch); 2308e822d936SAlexander V. Chernikov error = ipfw_count_xtable(ch, &ti, tbl); 2309e822d936SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 2310e822d936SAlexander V. Chernikov return (error); 2311e822d936SAlexander V. Chernikov } 2312e822d936SAlexander V. Chernikov 2313e822d936SAlexander V. Chernikov /* 231481d3153dSAlexander V. Chernikov * Legacy IP_FW_TABLE_GETSIZE handler 231581d3153dSAlexander V. Chernikov */ 23163b3a8eb9SGleb Smirnoff int 2317b074b7bbSAlexander V. Chernikov ipfw_count_table(struct ip_fw_chain *ch, struct tid_info *ti, uint32_t *cnt) 23183b3a8eb9SGleb Smirnoff { 2319b074b7bbSAlexander V. Chernikov struct table_config *tc; 23203b3a8eb9SGleb Smirnoff 2321b074b7bbSAlexander V. Chernikov if ((tc = find_table(CHAIN_TO_NI(ch), ti)) == NULL) 2322b074b7bbSAlexander V. Chernikov return (ESRCH); 2323d3b00c08SAlexander V. Chernikov *cnt = table_get_count(ch, tc); 23243b3a8eb9SGleb Smirnoff return (0); 23253b3a8eb9SGleb Smirnoff } 23263b3a8eb9SGleb Smirnoff 232781d3153dSAlexander V. Chernikov /* 232881d3153dSAlexander V. Chernikov * Legacy IP_FW_TABLE_XGETSIZE handler 232981d3153dSAlexander V. Chernikov */ 23309f7d47b0SAlexander V. Chernikov int 23319f7d47b0SAlexander V. Chernikov ipfw_count_xtable(struct ip_fw_chain *ch, struct tid_info *ti, uint32_t *cnt) 23323b3a8eb9SGleb Smirnoff { 23339f7d47b0SAlexander V. Chernikov struct table_config *tc; 2334d3b00c08SAlexander V. Chernikov uint32_t count; 23359f7d47b0SAlexander V. Chernikov 2336d3a4f924SAlexander V. Chernikov if ((tc = find_table(CHAIN_TO_NI(ch), ti)) == NULL) { 2337d3a4f924SAlexander V. Chernikov *cnt = 0; 23389f7d47b0SAlexander V. Chernikov return (0); /* 'table all list' requires success */ 2339d3a4f924SAlexander V. Chernikov } 2340d3b00c08SAlexander V. Chernikov 2341d3b00c08SAlexander V. Chernikov count = table_get_count(ch, tc); 2342d3b00c08SAlexander V. Chernikov *cnt = count * sizeof(ipfw_table_xentry); 2343d3b00c08SAlexander V. Chernikov if (count > 0) 23449f7d47b0SAlexander V. Chernikov *cnt += sizeof(ipfw_xtable); 23459f7d47b0SAlexander V. Chernikov return (0); 23469f7d47b0SAlexander V. Chernikov } 23479f7d47b0SAlexander V. Chernikov 23489f7d47b0SAlexander V. Chernikov static int 23499f7d47b0SAlexander V. Chernikov dump_table_entry(void *e, void *arg) 23509f7d47b0SAlexander V. Chernikov { 23519f7d47b0SAlexander V. Chernikov struct dump_args *da; 23529f7d47b0SAlexander V. Chernikov struct table_config *tc; 23539f7d47b0SAlexander V. Chernikov struct table_algo *ta; 23543b3a8eb9SGleb Smirnoff ipfw_table_entry *ent; 23550cba2b28SAlexander V. Chernikov struct table_value *pval; 235681d3153dSAlexander V. Chernikov int error; 23573b3a8eb9SGleb Smirnoff 23589f7d47b0SAlexander V. Chernikov da = (struct dump_args *)arg; 23599f7d47b0SAlexander V. Chernikov 23609f7d47b0SAlexander V. Chernikov tc = da->tc; 23619f7d47b0SAlexander V. Chernikov ta = tc->ta; 23629f7d47b0SAlexander V. Chernikov 23639f7d47b0SAlexander V. Chernikov /* Out of memory, returning */ 2364f1220db8SAlexander V. Chernikov if (da->cnt == da->size) 23653b3a8eb9SGleb Smirnoff return (1); 2366f1220db8SAlexander V. Chernikov ent = da->ent++; 2367f1220db8SAlexander V. Chernikov ent->tbl = da->uidx; 2368f1220db8SAlexander V. Chernikov da->cnt++; 23699f7d47b0SAlexander V. Chernikov 237081d3153dSAlexander V. Chernikov error = ta->dump_tentry(tc->astate, da->ti, e, &da->tent); 237181d3153dSAlexander V. Chernikov if (error != 0) 237281d3153dSAlexander V. Chernikov return (error); 237381d3153dSAlexander V. Chernikov 237481d3153dSAlexander V. Chernikov ent->addr = da->tent.k.addr.s_addr; 237581d3153dSAlexander V. Chernikov ent->masklen = da->tent.masklen; 23760cba2b28SAlexander V. Chernikov pval = get_table_value(da->ch, da->tc, da->tent.v.kidx); 23770cba2b28SAlexander V. Chernikov ent->value = ipfw_export_table_value_legacy(pval); 237881d3153dSAlexander V. Chernikov 237981d3153dSAlexander V. Chernikov return (0); 23803b3a8eb9SGleb Smirnoff } 23813b3a8eb9SGleb Smirnoff 2382f1220db8SAlexander V. Chernikov /* 2383f1220db8SAlexander V. Chernikov * Dumps table in pre-8.1 legacy format. 2384f1220db8SAlexander V. Chernikov */ 23853b3a8eb9SGleb Smirnoff int 2386f1220db8SAlexander V. Chernikov ipfw_dump_table_legacy(struct ip_fw_chain *ch, struct tid_info *ti, 2387f1220db8SAlexander V. Chernikov ipfw_table *tbl) 23883b3a8eb9SGleb Smirnoff { 2389b074b7bbSAlexander V. Chernikov struct table_config *tc; 23909f7d47b0SAlexander V. Chernikov struct table_algo *ta; 23919f7d47b0SAlexander V. Chernikov struct dump_args da; 23923b3a8eb9SGleb Smirnoff 23933b3a8eb9SGleb Smirnoff tbl->cnt = 0; 23943b3a8eb9SGleb Smirnoff 2395b074b7bbSAlexander V. Chernikov if ((tc = find_table(CHAIN_TO_NI(ch), ti)) == NULL) 2396b074b7bbSAlexander V. Chernikov return (0); /* XXX: We should return ESRCH */ 23979f7d47b0SAlexander V. Chernikov 23989f7d47b0SAlexander V. Chernikov ta = tc->ta; 23999f7d47b0SAlexander V. Chernikov 240081d3153dSAlexander V. Chernikov /* This dump format supports IPv4 only */ 240174b22066SAlexander V. Chernikov if (tc->no.subtype != IPFW_TABLE_ADDR) 240281d3153dSAlexander V. Chernikov return (0); 24039f7d47b0SAlexander V. Chernikov 2404d3a4f924SAlexander V. Chernikov memset(&da, 0, sizeof(da)); 24050cba2b28SAlexander V. Chernikov da.ch = ch; 24069f7d47b0SAlexander V. Chernikov da.ti = KIDX_TO_TI(ch, tc->no.kidx); 24079f7d47b0SAlexander V. Chernikov da.tc = tc; 2408f1220db8SAlexander V. Chernikov da.ent = &tbl->ent[0]; 2409f1220db8SAlexander V. Chernikov da.size = tbl->size; 24109f7d47b0SAlexander V. Chernikov 24119f7d47b0SAlexander V. Chernikov tbl->cnt = 0; 24129f7d47b0SAlexander V. Chernikov ta->foreach(tc->astate, da.ti, dump_table_entry, &da); 2413f1220db8SAlexander V. Chernikov tbl->cnt = da.cnt; 24149f7d47b0SAlexander V. Chernikov 24153b3a8eb9SGleb Smirnoff return (0); 24163b3a8eb9SGleb Smirnoff } 24173b3a8eb9SGleb Smirnoff 24189490a627SAlexander V. Chernikov /* 241981d3153dSAlexander V. Chernikov * Dumps table entry in eXtended format (v1)(current). 242081d3153dSAlexander V. Chernikov */ 242181d3153dSAlexander V. Chernikov static int 242281d3153dSAlexander V. Chernikov dump_table_tentry(void *e, void *arg) 242381d3153dSAlexander V. Chernikov { 242481d3153dSAlexander V. Chernikov struct dump_args *da; 242581d3153dSAlexander V. Chernikov struct table_config *tc; 242681d3153dSAlexander V. Chernikov struct table_algo *ta; 24270cba2b28SAlexander V. Chernikov struct table_value *pval; 242881d3153dSAlexander V. Chernikov ipfw_obj_tentry *tent; 24290cba2b28SAlexander V. Chernikov int error; 243081d3153dSAlexander V. Chernikov 243181d3153dSAlexander V. Chernikov da = (struct dump_args *)arg; 243281d3153dSAlexander V. Chernikov 243381d3153dSAlexander V. Chernikov tc = da->tc; 243481d3153dSAlexander V. Chernikov ta = tc->ta; 243581d3153dSAlexander V. Chernikov 243681d3153dSAlexander V. Chernikov tent = (ipfw_obj_tentry *)ipfw_get_sopt_space(da->sd, sizeof(*tent)); 243781d3153dSAlexander V. Chernikov /* Out of memory, returning */ 243881d3153dSAlexander V. Chernikov if (tent == NULL) { 243981d3153dSAlexander V. Chernikov da->error = ENOMEM; 244081d3153dSAlexander V. Chernikov return (1); 244181d3153dSAlexander V. Chernikov } 244281d3153dSAlexander V. Chernikov tent->head.length = sizeof(ipfw_obj_tentry); 244381d3153dSAlexander V. Chernikov tent->idx = da->uidx; 244481d3153dSAlexander V. Chernikov 24450cba2b28SAlexander V. Chernikov error = ta->dump_tentry(tc->astate, da->ti, e, tent); 24460cba2b28SAlexander V. Chernikov if (error != 0) 24470cba2b28SAlexander V. Chernikov return (error); 24480cba2b28SAlexander V. Chernikov 24490cba2b28SAlexander V. Chernikov pval = get_table_value(da->ch, da->tc, tent->v.kidx); 24500cba2b28SAlexander V. Chernikov ipfw_export_table_value_v1(pval, &tent->v.value); 24510cba2b28SAlexander V. Chernikov 24520cba2b28SAlexander V. Chernikov return (0); 245381d3153dSAlexander V. Chernikov } 245481d3153dSAlexander V. Chernikov 245581d3153dSAlexander V. Chernikov /* 245681d3153dSAlexander V. Chernikov * Dumps table entry in eXtended format (v0). 24579490a627SAlexander V. Chernikov */ 24583b3a8eb9SGleb Smirnoff static int 24599f7d47b0SAlexander V. Chernikov dump_table_xentry(void *e, void *arg) 24603b3a8eb9SGleb Smirnoff { 24619f7d47b0SAlexander V. Chernikov struct dump_args *da; 24629f7d47b0SAlexander V. Chernikov struct table_config *tc; 24639f7d47b0SAlexander V. Chernikov struct table_algo *ta; 24643b3a8eb9SGleb Smirnoff ipfw_table_xentry *xent; 246581d3153dSAlexander V. Chernikov ipfw_obj_tentry *tent; 24660cba2b28SAlexander V. Chernikov struct table_value *pval; 246781d3153dSAlexander V. Chernikov int error; 24683b3a8eb9SGleb Smirnoff 24699f7d47b0SAlexander V. Chernikov da = (struct dump_args *)arg; 24709f7d47b0SAlexander V. Chernikov 24719f7d47b0SAlexander V. Chernikov tc = da->tc; 24729f7d47b0SAlexander V. Chernikov ta = tc->ta; 24739f7d47b0SAlexander V. Chernikov 24742d99a349SAlexander V. Chernikov xent = (ipfw_table_xentry *)ipfw_get_sopt_space(da->sd, sizeof(*xent)); 24753b3a8eb9SGleb Smirnoff /* Out of memory, returning */ 24762d99a349SAlexander V. Chernikov if (xent == NULL) 24773b3a8eb9SGleb Smirnoff return (1); 24783b3a8eb9SGleb Smirnoff xent->len = sizeof(ipfw_table_xentry); 2479f1220db8SAlexander V. Chernikov xent->tbl = da->uidx; 24809f7d47b0SAlexander V. Chernikov 248181d3153dSAlexander V. Chernikov memset(&da->tent, 0, sizeof(da->tent)); 248281d3153dSAlexander V. Chernikov tent = &da->tent; 248381d3153dSAlexander V. Chernikov error = ta->dump_tentry(tc->astate, da->ti, e, tent); 248481d3153dSAlexander V. Chernikov if (error != 0) 248581d3153dSAlexander V. Chernikov return (error); 248681d3153dSAlexander V. Chernikov 248781d3153dSAlexander V. Chernikov /* Convert current format to previous one */ 248881d3153dSAlexander V. Chernikov xent->masklen = tent->masklen; 24890cba2b28SAlexander V. Chernikov pval = get_table_value(da->ch, da->tc, da->tent.v.kidx); 24900cba2b28SAlexander V. Chernikov xent->value = ipfw_export_table_value_legacy(pval); 249181d3153dSAlexander V. Chernikov /* Apply some hacks */ 249274b22066SAlexander V. Chernikov if (tc->no.subtype == IPFW_TABLE_ADDR && tent->subtype == AF_INET) { 249381d3153dSAlexander V. Chernikov xent->k.addr6.s6_addr32[3] = tent->k.addr.s_addr; 249481d3153dSAlexander V. Chernikov xent->flags = IPFW_TCF_INET; 249581d3153dSAlexander V. Chernikov } else 249681d3153dSAlexander V. Chernikov memcpy(&xent->k, &tent->k, sizeof(xent->k)); 249781d3153dSAlexander V. Chernikov 249881d3153dSAlexander V. Chernikov return (0); 24999f7d47b0SAlexander V. Chernikov } 25009f7d47b0SAlexander V. Chernikov 25019f7d47b0SAlexander V. Chernikov /* 25024dff4ae0SAlexander V. Chernikov * Helper function to export table algo data 25034dff4ae0SAlexander V. Chernikov * to tentry format before calling user function. 25044dff4ae0SAlexander V. Chernikov * 25054dff4ae0SAlexander V. Chernikov * Returns 0 on success. 25064dff4ae0SAlexander V. Chernikov */ 25074dff4ae0SAlexander V. Chernikov static int 25084dff4ae0SAlexander V. Chernikov prepare_table_tentry(void *e, void *arg) 25094dff4ae0SAlexander V. Chernikov { 25104dff4ae0SAlexander V. Chernikov struct dump_args *da; 25114dff4ae0SAlexander V. Chernikov struct table_config *tc; 25124dff4ae0SAlexander V. Chernikov struct table_algo *ta; 25134dff4ae0SAlexander V. Chernikov int error; 25144dff4ae0SAlexander V. Chernikov 25154dff4ae0SAlexander V. Chernikov da = (struct dump_args *)arg; 25164dff4ae0SAlexander V. Chernikov 25174dff4ae0SAlexander V. Chernikov tc = da->tc; 25184dff4ae0SAlexander V. Chernikov ta = tc->ta; 25194dff4ae0SAlexander V. Chernikov 25204dff4ae0SAlexander V. Chernikov error = ta->dump_tentry(tc->astate, da->ti, e, &da->tent); 25214dff4ae0SAlexander V. Chernikov if (error != 0) 25224dff4ae0SAlexander V. Chernikov return (error); 25234dff4ae0SAlexander V. Chernikov 25244dff4ae0SAlexander V. Chernikov da->f(&da->tent, da->farg); 25254dff4ae0SAlexander V. Chernikov 25264dff4ae0SAlexander V. Chernikov return (0); 25274dff4ae0SAlexander V. Chernikov } 25284dff4ae0SAlexander V. Chernikov 25294dff4ae0SAlexander V. Chernikov /* 25304dff4ae0SAlexander V. Chernikov * Allow external consumers to read table entries in standard format. 25314dff4ae0SAlexander V. Chernikov */ 25324dff4ae0SAlexander V. Chernikov int 25334dff4ae0SAlexander V. Chernikov ipfw_foreach_table_tentry(struct ip_fw_chain *ch, uint16_t kidx, 25344dff4ae0SAlexander V. Chernikov ta_foreach_f *f, void *arg) 25354dff4ae0SAlexander V. Chernikov { 25364dff4ae0SAlexander V. Chernikov struct namedobj_instance *ni; 25374dff4ae0SAlexander V. Chernikov struct table_config *tc; 25384dff4ae0SAlexander V. Chernikov struct table_algo *ta; 25394dff4ae0SAlexander V. Chernikov struct dump_args da; 25404dff4ae0SAlexander V. Chernikov 25414dff4ae0SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 25424dff4ae0SAlexander V. Chernikov 25434dff4ae0SAlexander V. Chernikov tc = (struct table_config *)ipfw_objhash_lookup_kidx(ni, kidx); 25444dff4ae0SAlexander V. Chernikov if (tc == NULL) 25454dff4ae0SAlexander V. Chernikov return (ESRCH); 25464dff4ae0SAlexander V. Chernikov 25474dff4ae0SAlexander V. Chernikov ta = tc->ta; 25484dff4ae0SAlexander V. Chernikov 25494dff4ae0SAlexander V. Chernikov memset(&da, 0, sizeof(da)); 25500cba2b28SAlexander V. Chernikov da.ch = ch; 25514dff4ae0SAlexander V. Chernikov da.ti = KIDX_TO_TI(ch, tc->no.kidx); 25524dff4ae0SAlexander V. Chernikov da.tc = tc; 25534dff4ae0SAlexander V. Chernikov da.f = f; 25544dff4ae0SAlexander V. Chernikov da.farg = arg; 25554dff4ae0SAlexander V. Chernikov 25564dff4ae0SAlexander V. Chernikov ta->foreach(tc->astate, da.ti, prepare_table_tentry, &da); 25574dff4ae0SAlexander V. Chernikov 25584dff4ae0SAlexander V. Chernikov return (0); 25594dff4ae0SAlexander V. Chernikov } 25604dff4ae0SAlexander V. Chernikov 25614dff4ae0SAlexander V. Chernikov /* 25629f7d47b0SAlexander V. Chernikov * Table algorithms 25639f7d47b0SAlexander V. Chernikov */ 25643b3a8eb9SGleb Smirnoff 25659f7d47b0SAlexander V. Chernikov /* 2566a4641f4eSPedro F. Giffuni * Finds algorithm by index, table type or supplied name. 256735e1bbd0SAlexander V. Chernikov * 256835e1bbd0SAlexander V. Chernikov * Returns pointer to algo or NULL. 25699f7d47b0SAlexander V. Chernikov */ 25709f7d47b0SAlexander V. Chernikov static struct table_algo * 25719490a627SAlexander V. Chernikov find_table_algo(struct tables_config *tcfg, struct tid_info *ti, char *name) 25729f7d47b0SAlexander V. Chernikov { 25739490a627SAlexander V. Chernikov int i, l; 25749490a627SAlexander V. Chernikov struct table_algo *ta; 25759f7d47b0SAlexander V. Chernikov 257657a1cf95SAlexander V. Chernikov if (ti->type > IPFW_TABLE_MAXTYPE) 257757a1cf95SAlexander V. Chernikov return (NULL); 257857a1cf95SAlexander V. Chernikov 25799f7d47b0SAlexander V. Chernikov /* Search by index */ 25809f7d47b0SAlexander V. Chernikov if (ti->atype != 0) { 25819f7d47b0SAlexander V. Chernikov if (ti->atype > tcfg->algo_count) 25829f7d47b0SAlexander V. Chernikov return (NULL); 25839f7d47b0SAlexander V. Chernikov return (tcfg->algo[ti->atype]); 25849f7d47b0SAlexander V. Chernikov } 25859f7d47b0SAlexander V. Chernikov 2586fd0869d5SAlexander V. Chernikov if (name == NULL) { 2587fd0869d5SAlexander V. Chernikov /* Return default algorithm for given type if set */ 2588fd0869d5SAlexander V. Chernikov return (tcfg->def_algo[ti->type]); 2589fd0869d5SAlexander V. Chernikov } 2590fd0869d5SAlexander V. Chernikov 2591fd0869d5SAlexander V. Chernikov /* Search by name */ 25929490a627SAlexander V. Chernikov /* TODO: better search */ 25939490a627SAlexander V. Chernikov for (i = 1; i <= tcfg->algo_count; i++) { 25949490a627SAlexander V. Chernikov ta = tcfg->algo[i]; 25959490a627SAlexander V. Chernikov 25969490a627SAlexander V. Chernikov /* 25979490a627SAlexander V. Chernikov * One can supply additional algorithm 25989490a627SAlexander V. Chernikov * parameters so we compare only the first word 25999490a627SAlexander V. Chernikov * of supplied name: 2600c21034b7SAlexander V. Chernikov * 'addr:chash hsize=32' 26019490a627SAlexander V. Chernikov * '^^^^^^^^^' 26029490a627SAlexander V. Chernikov * 26039490a627SAlexander V. Chernikov */ 26049490a627SAlexander V. Chernikov l = strlen(ta->name); 2605fd0869d5SAlexander V. Chernikov if (strncmp(name, ta->name, l) != 0) 2606fd0869d5SAlexander V. Chernikov continue; 2607fd0869d5SAlexander V. Chernikov if (name[l] != '\0' && name[l] != ' ') 2608fd0869d5SAlexander V. Chernikov continue; 2609fd0869d5SAlexander V. Chernikov /* Check if we're requesting proper table type */ 2610fd0869d5SAlexander V. Chernikov if (ti->type != 0 && ti->type != ta->type) 2611fd0869d5SAlexander V. Chernikov return (NULL); 26129490a627SAlexander V. Chernikov return (ta); 26139490a627SAlexander V. Chernikov } 26149490a627SAlexander V. Chernikov 26159490a627SAlexander V. Chernikov return (NULL); 26169490a627SAlexander V. Chernikov } 26179490a627SAlexander V. Chernikov 2618b6ee846eSAlexander V. Chernikov /* 2619b6ee846eSAlexander V. Chernikov * Register new table algo @ta. 262035e1bbd0SAlexander V. Chernikov * Stores algo id inside @idx. 2621b6ee846eSAlexander V. Chernikov * 2622b6ee846eSAlexander V. Chernikov * Returns 0 on success. 2623b6ee846eSAlexander V. Chernikov */ 26240b565ac0SAlexander V. Chernikov int 26250b565ac0SAlexander V. Chernikov ipfw_add_table_algo(struct ip_fw_chain *ch, struct table_algo *ta, size_t size, 26260b565ac0SAlexander V. Chernikov int *idx) 26273b3a8eb9SGleb Smirnoff { 26289f7d47b0SAlexander V. Chernikov struct tables_config *tcfg; 26290b565ac0SAlexander V. Chernikov struct table_algo *ta_new; 2630b6ee846eSAlexander V. Chernikov size_t sz; 26310b565ac0SAlexander V. Chernikov 26320b565ac0SAlexander V. Chernikov if (size > sizeof(struct table_algo)) 26330b565ac0SAlexander V. Chernikov return (EINVAL); 26340b565ac0SAlexander V. Chernikov 2635b6ee846eSAlexander V. Chernikov /* Check for the required on-stack size for add/del */ 2636b6ee846eSAlexander V. Chernikov sz = roundup2(ta->ta_buf_size, sizeof(void *)); 2637b6ee846eSAlexander V. Chernikov if (sz > TA_BUF_SZ) 2638b6ee846eSAlexander V. Chernikov return (EINVAL); 2639b6ee846eSAlexander V. Chernikov 2640fddbbf75SAlexander V. Chernikov KASSERT(ta->type <= IPFW_TABLE_MAXTYPE,("Increase IPFW_TABLE_MAXTYPE")); 264157a1cf95SAlexander V. Chernikov 264235e1bbd0SAlexander V. Chernikov /* Copy algorithm data to stable storage. */ 26430b565ac0SAlexander V. Chernikov ta_new = malloc(sizeof(struct table_algo), M_IPFW, M_WAITOK | M_ZERO); 26440b565ac0SAlexander V. Chernikov memcpy(ta_new, ta, size); 26453b3a8eb9SGleb Smirnoff 26469f7d47b0SAlexander V. Chernikov tcfg = CHAIN_TO_TCFG(ch); 2647b074b7bbSAlexander V. Chernikov 26489f7d47b0SAlexander V. Chernikov KASSERT(tcfg->algo_count < 255, ("Increase algo array size")); 26499f7d47b0SAlexander V. Chernikov 26500b565ac0SAlexander V. Chernikov tcfg->algo[++tcfg->algo_count] = ta_new; 26510b565ac0SAlexander V. Chernikov ta_new->idx = tcfg->algo_count; 26520b565ac0SAlexander V. Chernikov 265357a1cf95SAlexander V. Chernikov /* Set algorithm as default one for given type */ 265457a1cf95SAlexander V. Chernikov if ((ta_new->flags & TA_FLAG_DEFAULT) != 0 && 265557a1cf95SAlexander V. Chernikov tcfg->def_algo[ta_new->type] == NULL) 265657a1cf95SAlexander V. Chernikov tcfg->def_algo[ta_new->type] = ta_new; 265757a1cf95SAlexander V. Chernikov 26580b565ac0SAlexander V. Chernikov *idx = ta_new->idx; 26590b565ac0SAlexander V. Chernikov 26600b565ac0SAlexander V. Chernikov return (0); 26610b565ac0SAlexander V. Chernikov } 26620b565ac0SAlexander V. Chernikov 2663b6ee846eSAlexander V. Chernikov /* 2664b6ee846eSAlexander V. Chernikov * Unregisters table algo using @idx as id. 2665c8d5d308SAlexander V. Chernikov * XXX: It is NOT safe to call this function in any place 2666c8d5d308SAlexander V. Chernikov * other than ipfw instance destroy handler. 2667b6ee846eSAlexander V. Chernikov */ 26680b565ac0SAlexander V. Chernikov void 26690b565ac0SAlexander V. Chernikov ipfw_del_table_algo(struct ip_fw_chain *ch, int idx) 26700b565ac0SAlexander V. Chernikov { 26710b565ac0SAlexander V. Chernikov struct tables_config *tcfg; 26720b565ac0SAlexander V. Chernikov struct table_algo *ta; 26730b565ac0SAlexander V. Chernikov 26740b565ac0SAlexander V. Chernikov tcfg = CHAIN_TO_TCFG(ch); 26750b565ac0SAlexander V. Chernikov 2676b6ee846eSAlexander V. Chernikov KASSERT(idx <= tcfg->algo_count, ("algo idx %d out of range 1..%d", 2677b6ee846eSAlexander V. Chernikov idx, tcfg->algo_count)); 26780b565ac0SAlexander V. Chernikov 26790b565ac0SAlexander V. Chernikov ta = tcfg->algo[idx]; 26800b565ac0SAlexander V. Chernikov KASSERT(ta != NULL, ("algo idx %d is NULL", idx)); 268157a1cf95SAlexander V. Chernikov 268257a1cf95SAlexander V. Chernikov if (tcfg->def_algo[ta->type] == ta) 268357a1cf95SAlexander V. Chernikov tcfg->def_algo[ta->type] = NULL; 268457a1cf95SAlexander V. Chernikov 26850b565ac0SAlexander V. Chernikov free(ta, M_IPFW); 26863b3a8eb9SGleb Smirnoff } 26873b3a8eb9SGleb Smirnoff 26889d099b4fSAlexander V. Chernikov /* 26899d099b4fSAlexander V. Chernikov * Lists all table algorithms currently available. 26909d099b4fSAlexander V. Chernikov * Data layout (v0)(current): 26919d099b4fSAlexander V. Chernikov * Request: [ ipfw_obj_lheader ], size = ipfw_obj_lheader.size 26929d099b4fSAlexander V. Chernikov * Reply: [ ipfw_obj_lheader ipfw_ta_info x N ] 26939d099b4fSAlexander V. Chernikov * 26949d099b4fSAlexander V. Chernikov * Returns 0 on success 26959d099b4fSAlexander V. Chernikov */ 26966b988f3aSAlexander V. Chernikov static int 26976b988f3aSAlexander V. Chernikov list_table_algo(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 2698e822d936SAlexander V. Chernikov struct sockopt_data *sd) 26999d099b4fSAlexander V. Chernikov { 27009d099b4fSAlexander V. Chernikov struct _ipfw_obj_lheader *olh; 27019d099b4fSAlexander V. Chernikov struct tables_config *tcfg; 27029d099b4fSAlexander V. Chernikov ipfw_ta_info *i; 27039d099b4fSAlexander V. Chernikov struct table_algo *ta; 27049d099b4fSAlexander V. Chernikov uint32_t count, n, size; 27059d099b4fSAlexander V. Chernikov 27069d099b4fSAlexander V. Chernikov olh = (struct _ipfw_obj_lheader *)ipfw_get_sopt_header(sd,sizeof(*olh)); 27079d099b4fSAlexander V. Chernikov if (olh == NULL) 27089d099b4fSAlexander V. Chernikov return (EINVAL); 27099d099b4fSAlexander V. Chernikov if (sd->valsize < olh->size) 27109d099b4fSAlexander V. Chernikov return (EINVAL); 27119d099b4fSAlexander V. Chernikov 27129d099b4fSAlexander V. Chernikov IPFW_UH_RLOCK(ch); 27139d099b4fSAlexander V. Chernikov tcfg = CHAIN_TO_TCFG(ch); 27149d099b4fSAlexander V. Chernikov count = tcfg->algo_count; 27159d099b4fSAlexander V. Chernikov size = count * sizeof(ipfw_ta_info) + sizeof(ipfw_obj_lheader); 27169d099b4fSAlexander V. Chernikov 27179d099b4fSAlexander V. Chernikov /* Fill in header regadless of buffer size */ 27189d099b4fSAlexander V. Chernikov olh->count = count; 27199d099b4fSAlexander V. Chernikov olh->objsize = sizeof(ipfw_ta_info); 27209d099b4fSAlexander V. Chernikov 27219d099b4fSAlexander V. Chernikov if (size > olh->size) { 27229d099b4fSAlexander V. Chernikov olh->size = size; 27239d099b4fSAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 27249d099b4fSAlexander V. Chernikov return (ENOMEM); 27259d099b4fSAlexander V. Chernikov } 27269d099b4fSAlexander V. Chernikov olh->size = size; 27279d099b4fSAlexander V. Chernikov 27289d099b4fSAlexander V. Chernikov for (n = 1; n <= count; n++) { 27299d099b4fSAlexander V. Chernikov i = (ipfw_ta_info *)ipfw_get_sopt_space(sd, sizeof(*i)); 27307a6ab8f1SPedro F. Giffuni KASSERT(i != NULL, ("previously checked buffer is not enough")); 27319d099b4fSAlexander V. Chernikov ta = tcfg->algo[n]; 27329d099b4fSAlexander V. Chernikov strlcpy(i->algoname, ta->name, sizeof(i->algoname)); 27339d099b4fSAlexander V. Chernikov i->type = ta->type; 27349d099b4fSAlexander V. Chernikov i->refcnt = ta->refcnt; 27359d099b4fSAlexander V. Chernikov } 27369d099b4fSAlexander V. Chernikov 27379d099b4fSAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 27389d099b4fSAlexander V. Chernikov 27399d099b4fSAlexander V. Chernikov return (0); 27409d099b4fSAlexander V. Chernikov } 27419d099b4fSAlexander V. Chernikov 2742b074b7bbSAlexander V. Chernikov static int 274374b22066SAlexander V. Chernikov classify_srcdst(ipfw_insn *cmd, uint16_t *puidx, uint8_t *ptype) 2744b074b7bbSAlexander V. Chernikov { 2745b074b7bbSAlexander V. Chernikov /* Basic IPv4/IPv6 or u32 lookups */ 2746b074b7bbSAlexander V. Chernikov *puidx = cmd->arg1; 2747c21034b7SAlexander V. Chernikov /* Assume ADDR by default */ 2748c21034b7SAlexander V. Chernikov *ptype = IPFW_TABLE_ADDR; 274974b22066SAlexander V. Chernikov int v; 2750b074b7bbSAlexander V. Chernikov 2751b074b7bbSAlexander V. Chernikov if (F_LEN(cmd) > F_INSN_SIZE(ipfw_insn_u32)) { 2752b074b7bbSAlexander V. Chernikov /* 2753b074b7bbSAlexander V. Chernikov * generic lookup. The key must be 2754b074b7bbSAlexander V. Chernikov * in 32bit big-endian format. 2755b074b7bbSAlexander V. Chernikov */ 2756b074b7bbSAlexander V. Chernikov v = ((ipfw_insn_u32 *)cmd)->d[1]; 2757b074b7bbSAlexander V. Chernikov switch (v) { 2758b074b7bbSAlexander V. Chernikov case 0: 2759b074b7bbSAlexander V. Chernikov case 1: 2760b074b7bbSAlexander V. Chernikov /* IPv4 src/dst */ 2761b074b7bbSAlexander V. Chernikov break; 2762b074b7bbSAlexander V. Chernikov case 2: 2763b074b7bbSAlexander V. Chernikov case 3: 2764b074b7bbSAlexander V. Chernikov /* src/dst port */ 2765b23d5de9SAlexander V. Chernikov *ptype = IPFW_TABLE_NUMBER; 2766b074b7bbSAlexander V. Chernikov break; 2767b074b7bbSAlexander V. Chernikov case 4: 2768b074b7bbSAlexander V. Chernikov /* uid/gid */ 2769b23d5de9SAlexander V. Chernikov *ptype = IPFW_TABLE_NUMBER; 2770b23d5de9SAlexander V. Chernikov break; 2771b074b7bbSAlexander V. Chernikov case 5: 2772b074b7bbSAlexander V. Chernikov /* jid */ 2773b23d5de9SAlexander V. Chernikov *ptype = IPFW_TABLE_NUMBER; 2774b23d5de9SAlexander V. Chernikov break; 2775b074b7bbSAlexander V. Chernikov case 6: 2776b074b7bbSAlexander V. Chernikov /* dscp */ 2777b23d5de9SAlexander V. Chernikov *ptype = IPFW_TABLE_NUMBER; 2778b074b7bbSAlexander V. Chernikov break; 2779b074b7bbSAlexander V. Chernikov } 2780b074b7bbSAlexander V. Chernikov } 2781b074b7bbSAlexander V. Chernikov 278274b22066SAlexander V. Chernikov return (0); 2783b074b7bbSAlexander V. Chernikov } 2784b074b7bbSAlexander V. Chernikov 278574b22066SAlexander V. Chernikov static int 278674b22066SAlexander V. Chernikov classify_via(ipfw_insn *cmd, uint16_t *puidx, uint8_t *ptype) 2787b074b7bbSAlexander V. Chernikov { 2788b074b7bbSAlexander V. Chernikov ipfw_insn_if *cmdif; 2789b074b7bbSAlexander V. Chernikov 2790b074b7bbSAlexander V. Chernikov /* Interface table, possibly */ 2791b074b7bbSAlexander V. Chernikov cmdif = (ipfw_insn_if *)cmd; 279274b22066SAlexander V. Chernikov if (cmdif->name[0] != '\1') 279374b22066SAlexander V. Chernikov return (1); 279474b22066SAlexander V. Chernikov 279574b22066SAlexander V. Chernikov *ptype = IPFW_TABLE_INTERFACE; 279674b22066SAlexander V. Chernikov *puidx = cmdif->p.kidx; 279774b22066SAlexander V. Chernikov 279874b22066SAlexander V. Chernikov return (0); 279974b22066SAlexander V. Chernikov } 280074b22066SAlexander V. Chernikov 280174b22066SAlexander V. Chernikov static int 280274b22066SAlexander V. Chernikov classify_flow(ipfw_insn *cmd, uint16_t *puidx, uint8_t *ptype) 280374b22066SAlexander V. Chernikov { 280474b22066SAlexander V. Chernikov 280574b22066SAlexander V. Chernikov *puidx = cmd->arg1; 280674b22066SAlexander V. Chernikov *ptype = IPFW_TABLE_FLOW; 280774b22066SAlexander V. Chernikov 280874b22066SAlexander V. Chernikov return (0); 280974b22066SAlexander V. Chernikov } 281074b22066SAlexander V. Chernikov 281174b22066SAlexander V. Chernikov static void 281274b22066SAlexander V. Chernikov update_arg1(ipfw_insn *cmd, uint16_t idx) 281374b22066SAlexander V. Chernikov { 281474b22066SAlexander V. Chernikov 2815914bffb6SAlexander V. Chernikov cmd->arg1 = idx; 2816b074b7bbSAlexander V. Chernikov } 281774b22066SAlexander V. Chernikov 281874b22066SAlexander V. Chernikov static void 281974b22066SAlexander V. Chernikov update_via(ipfw_insn *cmd, uint16_t idx) 282074b22066SAlexander V. Chernikov { 282174b22066SAlexander V. Chernikov ipfw_insn_if *cmdif; 282274b22066SAlexander V. Chernikov 282374b22066SAlexander V. Chernikov cmdif = (ipfw_insn_if *)cmd; 282474b22066SAlexander V. Chernikov cmdif->p.kidx = idx; 2825b074b7bbSAlexander V. Chernikov } 2826b074b7bbSAlexander V. Chernikov 282774b22066SAlexander V. Chernikov static int 282874b22066SAlexander V. Chernikov table_findbyname(struct ip_fw_chain *ch, struct tid_info *ti, 282974b22066SAlexander V. Chernikov struct named_object **pno) 283074b22066SAlexander V. Chernikov { 283174b22066SAlexander V. Chernikov struct table_config *tc; 283274b22066SAlexander V. Chernikov int error; 283374b22066SAlexander V. Chernikov 283474b22066SAlexander V. Chernikov IPFW_UH_WLOCK_ASSERT(ch); 283574b22066SAlexander V. Chernikov 283674b22066SAlexander V. Chernikov error = find_table_err(CHAIN_TO_NI(ch), ti, &tc); 283774b22066SAlexander V. Chernikov if (error != 0) 283874b22066SAlexander V. Chernikov return (error); 283974b22066SAlexander V. Chernikov 284074b22066SAlexander V. Chernikov *pno = &tc->no; 284174b22066SAlexander V. Chernikov return (0); 284274b22066SAlexander V. Chernikov } 284374b22066SAlexander V. Chernikov 284474b22066SAlexander V. Chernikov /* XXX: sets-sets! */ 284574b22066SAlexander V. Chernikov static struct named_object * 284674b22066SAlexander V. Chernikov table_findbykidx(struct ip_fw_chain *ch, uint16_t idx) 284774b22066SAlexander V. Chernikov { 284874b22066SAlexander V. Chernikov struct namedobj_instance *ni; 284974b22066SAlexander V. Chernikov struct table_config *tc; 285074b22066SAlexander V. Chernikov 285174b22066SAlexander V. Chernikov IPFW_UH_WLOCK_ASSERT(ch); 285274b22066SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 285374b22066SAlexander V. Chernikov tc = (struct table_config *)ipfw_objhash_lookup_kidx(ni, idx); 285474b22066SAlexander V. Chernikov KASSERT(tc != NULL, ("Table with index %d not found", idx)); 285574b22066SAlexander V. Chernikov 285674b22066SAlexander V. Chernikov return (&tc->no); 285774b22066SAlexander V. Chernikov } 285874b22066SAlexander V. Chernikov 28592685841bSAndrey V. Elsukov static int 28602685841bSAndrey V. Elsukov table_manage_sets(struct ip_fw_chain *ch, uint16_t set, uint8_t new_set, 28612685841bSAndrey V. Elsukov enum ipfw_sets_cmd cmd) 28622685841bSAndrey V. Elsukov { 28632685841bSAndrey V. Elsukov 28642685841bSAndrey V. Elsukov switch (cmd) { 28652685841bSAndrey V. Elsukov case SWAP_ALL: 28662685841bSAndrey V. Elsukov case TEST_ALL: 28672685841bSAndrey V. Elsukov case MOVE_ALL: 286870c1466dSAndrey V. Elsukov /* 286970c1466dSAndrey V. Elsukov * Always return success, the real action and decision 287070c1466dSAndrey V. Elsukov * should make table_manage_sets_all(). 287170c1466dSAndrey V. Elsukov */ 287270c1466dSAndrey V. Elsukov return (0); 28732685841bSAndrey V. Elsukov case TEST_ONE: 28742685841bSAndrey V. Elsukov case MOVE_ONE: 28752685841bSAndrey V. Elsukov /* 28762685841bSAndrey V. Elsukov * NOTE: we need to use ipfw_objhash_del/ipfw_objhash_add 28772685841bSAndrey V. Elsukov * if set number will be used in hash function. Currently 28782685841bSAndrey V. Elsukov * we can just use generic handler that replaces set value. 28792685841bSAndrey V. Elsukov */ 28802685841bSAndrey V. Elsukov if (V_fw_tables_sets == 0) 28812685841bSAndrey V. Elsukov return (0); 28822685841bSAndrey V. Elsukov break; 28832685841bSAndrey V. Elsukov case COUNT_ONE: 28842685841bSAndrey V. Elsukov /* 28852685841bSAndrey V. Elsukov * Return EOPNOTSUPP for COUNT_ONE when per-set sysctl is 28862685841bSAndrey V. Elsukov * disabled. This allow skip table's opcodes from additional 28872685841bSAndrey V. Elsukov * checks when specific rules moved to another set. 28882685841bSAndrey V. Elsukov */ 28892685841bSAndrey V. Elsukov if (V_fw_tables_sets == 0) 28902685841bSAndrey V. Elsukov return (EOPNOTSUPP); 28912685841bSAndrey V. Elsukov } 28922685841bSAndrey V. Elsukov /* Use generic sets handler when per-set sysctl is enabled. */ 28932685841bSAndrey V. Elsukov return (ipfw_obj_manage_sets(CHAIN_TO_NI(ch), IPFW_TLV_TBL_NAME, 28942685841bSAndrey V. Elsukov set, new_set, cmd)); 28952685841bSAndrey V. Elsukov } 28962685841bSAndrey V. Elsukov 289770c1466dSAndrey V. Elsukov /* 289870c1466dSAndrey V. Elsukov * We register several opcode rewriters for lookup tables. 289970c1466dSAndrey V. Elsukov * All tables opcodes have the same ETLV type, but different subtype. 290070c1466dSAndrey V. Elsukov * To avoid invoking sets handler several times for XXX_ALL commands, 290170c1466dSAndrey V. Elsukov * we use separate manage_sets handler. O_RECV has the lowest value, 290270c1466dSAndrey V. Elsukov * so it should be called first. 290370c1466dSAndrey V. Elsukov */ 290470c1466dSAndrey V. Elsukov static int 290570c1466dSAndrey V. Elsukov table_manage_sets_all(struct ip_fw_chain *ch, uint16_t set, uint8_t new_set, 290670c1466dSAndrey V. Elsukov enum ipfw_sets_cmd cmd) 290770c1466dSAndrey V. Elsukov { 290870c1466dSAndrey V. Elsukov 290970c1466dSAndrey V. Elsukov switch (cmd) { 291070c1466dSAndrey V. Elsukov case SWAP_ALL: 291170c1466dSAndrey V. Elsukov case TEST_ALL: 291270c1466dSAndrey V. Elsukov /* 291370c1466dSAndrey V. Elsukov * Return success for TEST_ALL, since nothing prevents 291470c1466dSAndrey V. Elsukov * move rules from one set to another. All tables are 291570c1466dSAndrey V. Elsukov * accessible from all sets when per-set tables sysctl 291670c1466dSAndrey V. Elsukov * is disabled. 291770c1466dSAndrey V. Elsukov */ 291870c1466dSAndrey V. Elsukov case MOVE_ALL: 291970c1466dSAndrey V. Elsukov if (V_fw_tables_sets == 0) 292070c1466dSAndrey V. Elsukov return (0); 292170c1466dSAndrey V. Elsukov break; 292270c1466dSAndrey V. Elsukov default: 292370c1466dSAndrey V. Elsukov return (table_manage_sets(ch, set, new_set, cmd)); 292470c1466dSAndrey V. Elsukov } 292570c1466dSAndrey V. Elsukov /* Use generic sets handler when per-set sysctl is enabled. */ 292670c1466dSAndrey V. Elsukov return (ipfw_obj_manage_sets(CHAIN_TO_NI(ch), IPFW_TLV_TBL_NAME, 292770c1466dSAndrey V. Elsukov set, new_set, cmd)); 292870c1466dSAndrey V. Elsukov } 292970c1466dSAndrey V. Elsukov 293074b22066SAlexander V. Chernikov static struct opcode_obj_rewrite opcodes[] = { 293174b22066SAlexander V. Chernikov { 29322685841bSAndrey V. Elsukov .opcode = O_IP_SRC_LOOKUP, 29332685841bSAndrey V. Elsukov .etlv = IPFW_TLV_TBL_NAME, 29342685841bSAndrey V. Elsukov .classifier = classify_srcdst, 29352685841bSAndrey V. Elsukov .update = update_arg1, 29362685841bSAndrey V. Elsukov .find_byname = table_findbyname, 29372685841bSAndrey V. Elsukov .find_bykidx = table_findbykidx, 29382685841bSAndrey V. Elsukov .create_object = create_table_compat, 29392685841bSAndrey V. Elsukov .manage_sets = table_manage_sets, 294074b22066SAlexander V. Chernikov }, 294174b22066SAlexander V. Chernikov { 29422685841bSAndrey V. Elsukov .opcode = O_IP_DST_LOOKUP, 29432685841bSAndrey V. Elsukov .etlv = IPFW_TLV_TBL_NAME, 29442685841bSAndrey V. Elsukov .classifier = classify_srcdst, 29452685841bSAndrey V. Elsukov .update = update_arg1, 29462685841bSAndrey V. Elsukov .find_byname = table_findbyname, 29472685841bSAndrey V. Elsukov .find_bykidx = table_findbykidx, 29482685841bSAndrey V. Elsukov .create_object = create_table_compat, 29492685841bSAndrey V. Elsukov .manage_sets = table_manage_sets, 295074b22066SAlexander V. Chernikov }, 295174b22066SAlexander V. Chernikov { 29522685841bSAndrey V. Elsukov .opcode = O_IP_FLOW_LOOKUP, 29532685841bSAndrey V. Elsukov .etlv = IPFW_TLV_TBL_NAME, 29542685841bSAndrey V. Elsukov .classifier = classify_flow, 29552685841bSAndrey V. Elsukov .update = update_arg1, 29562685841bSAndrey V. Elsukov .find_byname = table_findbyname, 29572685841bSAndrey V. Elsukov .find_bykidx = table_findbykidx, 29582685841bSAndrey V. Elsukov .create_object = create_table_compat, 29592685841bSAndrey V. Elsukov .manage_sets = table_manage_sets, 296074b22066SAlexander V. Chernikov }, 296174b22066SAlexander V. Chernikov { 29622685841bSAndrey V. Elsukov .opcode = O_XMIT, 29632685841bSAndrey V. Elsukov .etlv = IPFW_TLV_TBL_NAME, 29642685841bSAndrey V. Elsukov .classifier = classify_via, 29652685841bSAndrey V. Elsukov .update = update_via, 29662685841bSAndrey V. Elsukov .find_byname = table_findbyname, 29672685841bSAndrey V. Elsukov .find_bykidx = table_findbykidx, 29682685841bSAndrey V. Elsukov .create_object = create_table_compat, 29692685841bSAndrey V. Elsukov .manage_sets = table_manage_sets, 297074b22066SAlexander V. Chernikov }, 297174b22066SAlexander V. Chernikov { 29722685841bSAndrey V. Elsukov .opcode = O_RECV, 29732685841bSAndrey V. Elsukov .etlv = IPFW_TLV_TBL_NAME, 29742685841bSAndrey V. Elsukov .classifier = classify_via, 29752685841bSAndrey V. Elsukov .update = update_via, 29762685841bSAndrey V. Elsukov .find_byname = table_findbyname, 29772685841bSAndrey V. Elsukov .find_bykidx = table_findbykidx, 29782685841bSAndrey V. Elsukov .create_object = create_table_compat, 297970c1466dSAndrey V. Elsukov .manage_sets = table_manage_sets_all, 298074b22066SAlexander V. Chernikov }, 298174b22066SAlexander V. Chernikov { 29822685841bSAndrey V. Elsukov .opcode = O_VIA, 29832685841bSAndrey V. Elsukov .etlv = IPFW_TLV_TBL_NAME, 29842685841bSAndrey V. Elsukov .classifier = classify_via, 29852685841bSAndrey V. Elsukov .update = update_via, 29862685841bSAndrey V. Elsukov .find_byname = table_findbyname, 29872685841bSAndrey V. Elsukov .find_bykidx = table_findbykidx, 29882685841bSAndrey V. Elsukov .create_object = create_table_compat, 29892685841bSAndrey V. Elsukov .manage_sets = table_manage_sets, 299074b22066SAlexander V. Chernikov }, 299174b22066SAlexander V. Chernikov }; 299274b22066SAlexander V. Chernikov 29932685841bSAndrey V. Elsukov static int 29942685841bSAndrey V. Elsukov test_sets_cb(struct namedobj_instance *ni __unused, struct named_object *no, 29952685841bSAndrey V. Elsukov void *arg __unused) 29962685841bSAndrey V. Elsukov { 29972685841bSAndrey V. Elsukov 29982685841bSAndrey V. Elsukov /* Check that there aren't any tables in not default set */ 29992685841bSAndrey V. Elsukov if (no->set != 0) 30002685841bSAndrey V. Elsukov return (EBUSY); 30012685841bSAndrey V. Elsukov return (0); 30022685841bSAndrey V. Elsukov } 30032685841bSAndrey V. Elsukov 30042685841bSAndrey V. Elsukov /* 30052685841bSAndrey V. Elsukov * Switch between "set 0" and "rule's set" table binding, 30062685841bSAndrey V. Elsukov * Check all ruleset bindings and permits changing 30072685841bSAndrey V. Elsukov * IFF each binding has both rule AND table in default set (set 0). 30082685841bSAndrey V. Elsukov * 30092685841bSAndrey V. Elsukov * Returns 0 on success. 30102685841bSAndrey V. Elsukov */ 30112685841bSAndrey V. Elsukov int 30122685841bSAndrey V. Elsukov ipfw_switch_tables_namespace(struct ip_fw_chain *ch, unsigned int sets) 30132685841bSAndrey V. Elsukov { 30142685841bSAndrey V. Elsukov struct opcode_obj_rewrite *rw; 30152685841bSAndrey V. Elsukov struct namedobj_instance *ni; 30162685841bSAndrey V. Elsukov struct named_object *no; 30172685841bSAndrey V. Elsukov struct ip_fw *rule; 30182685841bSAndrey V. Elsukov ipfw_insn *cmd; 30192685841bSAndrey V. Elsukov int cmdlen, i, l; 30202685841bSAndrey V. Elsukov uint16_t kidx; 30212685841bSAndrey V. Elsukov uint8_t subtype; 30222685841bSAndrey V. Elsukov 30232685841bSAndrey V. Elsukov IPFW_UH_WLOCK(ch); 30242685841bSAndrey V. Elsukov 30252685841bSAndrey V. Elsukov if (V_fw_tables_sets == sets) { 30262685841bSAndrey V. Elsukov IPFW_UH_WUNLOCK(ch); 30272685841bSAndrey V. Elsukov return (0); 30282685841bSAndrey V. Elsukov } 30292685841bSAndrey V. Elsukov ni = CHAIN_TO_NI(ch); 30302685841bSAndrey V. Elsukov if (sets == 0) { 30312685841bSAndrey V. Elsukov /* 30322685841bSAndrey V. Elsukov * Prevent disabling sets support if we have some tables 30332685841bSAndrey V. Elsukov * in not default sets. 30342685841bSAndrey V. Elsukov */ 30352685841bSAndrey V. Elsukov if (ipfw_objhash_foreach_type(ni, test_sets_cb, 30362685841bSAndrey V. Elsukov NULL, IPFW_TLV_TBL_NAME) != 0) { 30372685841bSAndrey V. Elsukov IPFW_UH_WUNLOCK(ch); 30382685841bSAndrey V. Elsukov return (EBUSY); 30392685841bSAndrey V. Elsukov } 30402685841bSAndrey V. Elsukov } 30412685841bSAndrey V. Elsukov /* 30422685841bSAndrey V. Elsukov * Scan all rules and examine tables opcodes. 30432685841bSAndrey V. Elsukov */ 30442685841bSAndrey V. Elsukov for (i = 0; i < ch->n_rules; i++) { 30452685841bSAndrey V. Elsukov rule = ch->map[i]; 30462685841bSAndrey V. Elsukov 30472685841bSAndrey V. Elsukov l = rule->cmd_len; 30482685841bSAndrey V. Elsukov cmd = rule->cmd; 30492685841bSAndrey V. Elsukov cmdlen = 0; 30502685841bSAndrey V. Elsukov for ( ; l > 0 ; l -= cmdlen, cmd += cmdlen) { 30512685841bSAndrey V. Elsukov cmdlen = F_LEN(cmd); 30522685841bSAndrey V. Elsukov /* Check only tables opcodes */ 30532685841bSAndrey V. Elsukov for (kidx = 0, rw = opcodes; 30542685841bSAndrey V. Elsukov rw < opcodes + nitems(opcodes); rw++) { 30552685841bSAndrey V. Elsukov if (rw->opcode != cmd->opcode) 30562685841bSAndrey V. Elsukov continue; 30572685841bSAndrey V. Elsukov if (rw->classifier(cmd, &kidx, &subtype) == 0) 30582685841bSAndrey V. Elsukov break; 30592685841bSAndrey V. Elsukov } 30602685841bSAndrey V. Elsukov if (kidx == 0) 30612685841bSAndrey V. Elsukov continue; 30622685841bSAndrey V. Elsukov no = ipfw_objhash_lookup_kidx(ni, kidx); 30632685841bSAndrey V. Elsukov /* Check if both table object and rule has the set 0 */ 30642685841bSAndrey V. Elsukov if (no->set != 0 || rule->set != 0) { 30652685841bSAndrey V. Elsukov IPFW_UH_WUNLOCK(ch); 30662685841bSAndrey V. Elsukov return (EBUSY); 30672685841bSAndrey V. Elsukov } 30682685841bSAndrey V. Elsukov 30692685841bSAndrey V. Elsukov } 30702685841bSAndrey V. Elsukov } 30712685841bSAndrey V. Elsukov V_fw_tables_sets = sets; 30722685841bSAndrey V. Elsukov IPFW_UH_WUNLOCK(ch); 30732685841bSAndrey V. Elsukov return (0); 30742685841bSAndrey V. Elsukov } 307574b22066SAlexander V. Chernikov 3076ac35ff17SAlexander V. Chernikov /* 3077ac35ff17SAlexander V. Chernikov * Checks table name for validity. 3078ac35ff17SAlexander V. Chernikov * Enforce basic length checks, the rest 3079ac35ff17SAlexander V. Chernikov * should be done in userland. 3080ac35ff17SAlexander V. Chernikov * 3081ac35ff17SAlexander V. Chernikov * Returns 0 if name is considered valid. 3082ac35ff17SAlexander V. Chernikov */ 3083f81431ccSAndrey V. Elsukov static int 3084f81431ccSAndrey V. Elsukov check_table_name(const char *name) 3085ac35ff17SAlexander V. Chernikov { 3086ac35ff17SAlexander V. Chernikov 3087ac35ff17SAlexander V. Chernikov /* 3088ac35ff17SAlexander V. Chernikov * TODO: do some more complicated checks 3089ac35ff17SAlexander V. Chernikov */ 3090f81431ccSAndrey V. Elsukov return (ipfw_check_object_name_generic(name)); 3091ac35ff17SAlexander V. Chernikov } 3092ac35ff17SAlexander V. Chernikov 3093ac35ff17SAlexander V. Chernikov /* 3094ac35ff17SAlexander V. Chernikov * Finds table config based on either legacy index 3095ac35ff17SAlexander V. Chernikov * or name in ntlv. 3096ac35ff17SAlexander V. Chernikov * Note @ti structure contains unchecked data from userland. 3097ac35ff17SAlexander V. Chernikov * 309874b22066SAlexander V. Chernikov * Returns 0 in success and fills in @tc with found config 3099ac35ff17SAlexander V. Chernikov */ 310074b22066SAlexander V. Chernikov static int 310174b22066SAlexander V. Chernikov find_table_err(struct namedobj_instance *ni, struct tid_info *ti, 310274b22066SAlexander V. Chernikov struct table_config **tc) 3103b074b7bbSAlexander V. Chernikov { 3104b074b7bbSAlexander V. Chernikov char *name, bname[16]; 3105b074b7bbSAlexander V. Chernikov struct named_object *no; 3106ac35ff17SAlexander V. Chernikov ipfw_obj_ntlv *ntlv; 3107ac35ff17SAlexander V. Chernikov uint32_t set; 3108b074b7bbSAlexander V. Chernikov 3109b074b7bbSAlexander V. Chernikov if (ti->tlvs != NULL) { 31102df1a11fSAndrey V. Elsukov ntlv = ipfw_find_name_tlv_type(ti->tlvs, ti->tlen, ti->uidx, 31112df1a11fSAndrey V. Elsukov IPFW_TLV_TBL_NAME); 3112ac35ff17SAlexander V. Chernikov if (ntlv == NULL) 311374b22066SAlexander V. Chernikov return (EINVAL); 3114ac35ff17SAlexander V. Chernikov name = ntlv->name; 311540e5f498SAlexander V. Chernikov 311640e5f498SAlexander V. Chernikov /* 311740e5f498SAlexander V. Chernikov * Use set provided by @ti instead of @ntlv one. 311840e5f498SAlexander V. Chernikov * This is needed due to different sets behavior 311940e5f498SAlexander V. Chernikov * controlled by V_fw_tables_sets. 312040e5f498SAlexander V. Chernikov */ 31212685841bSAndrey V. Elsukov set = (V_fw_tables_sets != 0) ? ti->set : 0; 3122b074b7bbSAlexander V. Chernikov } else { 3123b074b7bbSAlexander V. Chernikov snprintf(bname, sizeof(bname), "%d", ti->uidx); 3124b074b7bbSAlexander V. Chernikov name = bname; 3125ac35ff17SAlexander V. Chernikov set = 0; 3126b074b7bbSAlexander V. Chernikov } 3127b074b7bbSAlexander V. Chernikov 3128ac35ff17SAlexander V. Chernikov no = ipfw_objhash_lookup_name(ni, set, name); 312974b22066SAlexander V. Chernikov *tc = (struct table_config *)no; 3130b074b7bbSAlexander V. Chernikov 313174b22066SAlexander V. Chernikov return (0); 313274b22066SAlexander V. Chernikov } 313374b22066SAlexander V. Chernikov 313474b22066SAlexander V. Chernikov /* 313574b22066SAlexander V. Chernikov * Finds table config based on either legacy index 313674b22066SAlexander V. Chernikov * or name in ntlv. 313774b22066SAlexander V. Chernikov * Note @ti structure contains unchecked data from userland. 313874b22066SAlexander V. Chernikov * 313974b22066SAlexander V. Chernikov * Returns pointer to table_config or NULL. 314074b22066SAlexander V. Chernikov */ 314174b22066SAlexander V. Chernikov static struct table_config * 314274b22066SAlexander V. Chernikov find_table(struct namedobj_instance *ni, struct tid_info *ti) 314374b22066SAlexander V. Chernikov { 314474b22066SAlexander V. Chernikov struct table_config *tc; 314574b22066SAlexander V. Chernikov 314674b22066SAlexander V. Chernikov if (find_table_err(ni, ti, &tc) != 0) 314774b22066SAlexander V. Chernikov return (NULL); 314874b22066SAlexander V. Chernikov 314974b22066SAlexander V. Chernikov return (tc); 3150b074b7bbSAlexander V. Chernikov } 3151b074b7bbSAlexander V. Chernikov 315235e1bbd0SAlexander V. Chernikov /* 315335e1bbd0SAlexander V. Chernikov * Allocate new table config structure using 315435e1bbd0SAlexander V. Chernikov * specified @algo and @aname. 315535e1bbd0SAlexander V. Chernikov * 315635e1bbd0SAlexander V. Chernikov * Returns pointer to config or NULL. 315735e1bbd0SAlexander V. Chernikov */ 3158b074b7bbSAlexander V. Chernikov static struct table_config * 315968394ec8SAlexander V. Chernikov alloc_table_config(struct ip_fw_chain *ch, struct tid_info *ti, 31600cba2b28SAlexander V. Chernikov struct table_algo *ta, char *aname, uint8_t tflags) 3161b074b7bbSAlexander V. Chernikov { 3162b074b7bbSAlexander V. Chernikov char *name, bname[16]; 3163b074b7bbSAlexander V. Chernikov struct table_config *tc; 3164b074b7bbSAlexander V. Chernikov int error; 3165ac35ff17SAlexander V. Chernikov ipfw_obj_ntlv *ntlv; 3166ac35ff17SAlexander V. Chernikov uint32_t set; 3167b074b7bbSAlexander V. Chernikov 3168b074b7bbSAlexander V. Chernikov if (ti->tlvs != NULL) { 31692df1a11fSAndrey V. Elsukov ntlv = ipfw_find_name_tlv_type(ti->tlvs, ti->tlen, ti->uidx, 31702df1a11fSAndrey V. Elsukov IPFW_TLV_TBL_NAME); 3171ac35ff17SAlexander V. Chernikov if (ntlv == NULL) 3172b074b7bbSAlexander V. Chernikov return (NULL); 3173ac35ff17SAlexander V. Chernikov name = ntlv->name; 3174ac35ff17SAlexander V. Chernikov set = ntlv->set; 3175b074b7bbSAlexander V. Chernikov } else { 317674b22066SAlexander V. Chernikov /* Compat part: convert number to string representation */ 3177b074b7bbSAlexander V. Chernikov snprintf(bname, sizeof(bname), "%d", ti->uidx); 3178b074b7bbSAlexander V. Chernikov name = bname; 3179ac35ff17SAlexander V. Chernikov set = 0; 3180b074b7bbSAlexander V. Chernikov } 3181b074b7bbSAlexander V. Chernikov 3182b074b7bbSAlexander V. Chernikov tc = malloc(sizeof(struct table_config), M_IPFW, M_WAITOK | M_ZERO); 3183b074b7bbSAlexander V. Chernikov tc->no.name = tc->tablename; 318474b22066SAlexander V. Chernikov tc->no.subtype = ta->type; 3185ac35ff17SAlexander V. Chernikov tc->no.set = set; 3186914bffb6SAlexander V. Chernikov tc->tflags = tflags; 31879f7d47b0SAlexander V. Chernikov tc->ta = ta; 3188b074b7bbSAlexander V. Chernikov strlcpy(tc->tablename, name, sizeof(tc->tablename)); 31890cba2b28SAlexander V. Chernikov /* Set "shared" value type by default */ 31900cba2b28SAlexander V. Chernikov tc->vshared = 1; 3191b074b7bbSAlexander V. Chernikov 3192b074b7bbSAlexander V. Chernikov /* Preallocate data structures for new tables */ 31934c060d85SAlexander V. Chernikov error = ta->init(ch, &tc->astate, &tc->ti_copy, aname, tflags); 3194b074b7bbSAlexander V. Chernikov if (error != 0) { 3195b074b7bbSAlexander V. Chernikov free(tc, M_IPFW); 3196b074b7bbSAlexander V. Chernikov return (NULL); 3197b074b7bbSAlexander V. Chernikov } 3198b074b7bbSAlexander V. Chernikov 3199b074b7bbSAlexander V. Chernikov return (tc); 3200b074b7bbSAlexander V. Chernikov } 3201b074b7bbSAlexander V. Chernikov 320235e1bbd0SAlexander V. Chernikov /* 320335e1bbd0SAlexander V. Chernikov * Destroys table state and config. 320435e1bbd0SAlexander V. Chernikov */ 3205b074b7bbSAlexander V. Chernikov static void 3206b074b7bbSAlexander V. Chernikov free_table_config(struct namedobj_instance *ni, struct table_config *tc) 3207b074b7bbSAlexander V. Chernikov { 3208b074b7bbSAlexander V. Chernikov 320935e1bbd0SAlexander V. Chernikov KASSERT(tc->linked == 0, ("free() on linked config")); 32100caab009SAlexander V. Chernikov /* UH lock MUST NOT be held */ 3211b074b7bbSAlexander V. Chernikov 32120468c5baSAlexander V. Chernikov /* 32130468c5baSAlexander V. Chernikov * We're using ta without any locking/referencing. 32140468c5baSAlexander V. Chernikov * TODO: fix this if we're going to use unloadable algos. 32150468c5baSAlexander V. Chernikov */ 32164c060d85SAlexander V. Chernikov tc->ta->destroy(tc->astate, &tc->ti_copy); 3217b074b7bbSAlexander V. Chernikov free(tc, M_IPFW); 3218b074b7bbSAlexander V. Chernikov } 3219b074b7bbSAlexander V. Chernikov 3220b074b7bbSAlexander V. Chernikov /* 3221b074b7bbSAlexander V. Chernikov * Links @tc to @chain table named instance. 3222b074b7bbSAlexander V. Chernikov * Sets appropriate type/states in @chain table info. 3223b074b7bbSAlexander V. Chernikov */ 3224b074b7bbSAlexander V. Chernikov static void 32259f7d47b0SAlexander V. Chernikov link_table(struct ip_fw_chain *ch, struct table_config *tc) 3226b074b7bbSAlexander V. Chernikov { 3227b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 32289f7d47b0SAlexander V. Chernikov struct table_info *ti; 3229b074b7bbSAlexander V. Chernikov uint16_t kidx; 3230b074b7bbSAlexander V. Chernikov 32319f7d47b0SAlexander V. Chernikov IPFW_UH_WLOCK_ASSERT(ch); 32329f7d47b0SAlexander V. Chernikov IPFW_WLOCK_ASSERT(ch); 3233b074b7bbSAlexander V. Chernikov 32349f7d47b0SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 3235b074b7bbSAlexander V. Chernikov kidx = tc->no.kidx; 3236b074b7bbSAlexander V. Chernikov 3237b074b7bbSAlexander V. Chernikov ipfw_objhash_add(ni, &tc->no); 32389f7d47b0SAlexander V. Chernikov 32399f7d47b0SAlexander V. Chernikov ti = KIDX_TO_TI(ch, kidx); 32404c060d85SAlexander V. Chernikov *ti = tc->ti_copy; 3241b074b7bbSAlexander V. Chernikov 324268394ec8SAlexander V. Chernikov /* Notify algo on real @ti address */ 324368394ec8SAlexander V. Chernikov if (tc->ta->change_ti != NULL) 324468394ec8SAlexander V. Chernikov tc->ta->change_ti(tc->astate, ti); 324568394ec8SAlexander V. Chernikov 3246b074b7bbSAlexander V. Chernikov tc->linked = 1; 32479d099b4fSAlexander V. Chernikov tc->ta->refcnt++; 3248b074b7bbSAlexander V. Chernikov } 3249b074b7bbSAlexander V. Chernikov 3250b074b7bbSAlexander V. Chernikov /* 3251b074b7bbSAlexander V. Chernikov * Unlinks @tc from @chain table named instance. 3252b074b7bbSAlexander V. Chernikov * Zeroes states in @chain and stores them in @tc. 3253b074b7bbSAlexander V. Chernikov */ 3254b074b7bbSAlexander V. Chernikov static void 32559f7d47b0SAlexander V. Chernikov unlink_table(struct ip_fw_chain *ch, struct table_config *tc) 3256b074b7bbSAlexander V. Chernikov { 3257b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 32589f7d47b0SAlexander V. Chernikov struct table_info *ti; 3259b074b7bbSAlexander V. Chernikov uint16_t kidx; 3260b074b7bbSAlexander V. Chernikov 32619f7d47b0SAlexander V. Chernikov IPFW_UH_WLOCK_ASSERT(ch); 32629f7d47b0SAlexander V. Chernikov IPFW_WLOCK_ASSERT(ch); 3263b074b7bbSAlexander V. Chernikov 32649f7d47b0SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 3265b074b7bbSAlexander V. Chernikov kidx = tc->no.kidx; 3266b074b7bbSAlexander V. Chernikov 32679f7d47b0SAlexander V. Chernikov /* Clear state. @ti copy is already saved inside @tc */ 3268b074b7bbSAlexander V. Chernikov ipfw_objhash_del(ni, &tc->no); 32699f7d47b0SAlexander V. Chernikov ti = KIDX_TO_TI(ch, kidx); 32709f7d47b0SAlexander V. Chernikov memset(ti, 0, sizeof(struct table_info)); 3271b074b7bbSAlexander V. Chernikov tc->linked = 0; 32729d099b4fSAlexander V. Chernikov tc->ta->refcnt--; 327368394ec8SAlexander V. Chernikov 327468394ec8SAlexander V. Chernikov /* Notify algo on real @ti address */ 327568394ec8SAlexander V. Chernikov if (tc->ta->change_ti != NULL) 327668394ec8SAlexander V. Chernikov tc->ta->change_ti(tc->astate, NULL); 3277b074b7bbSAlexander V. Chernikov } 3278b074b7bbSAlexander V. Chernikov 32796b988f3aSAlexander V. Chernikov static struct ipfw_sopt_handler scodes[] = { 32806b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XCREATE, 0, HDIR_SET, create_table }, 32816b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XDESTROY, 0, HDIR_SET, flush_table_v0 }, 32826b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XFLUSH, 0, HDIR_SET, flush_table_v0 }, 32836b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XMODIFY, 0, HDIR_BOTH, modify_table }, 32846b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XINFO, 0, HDIR_GET, describe_table }, 32856b988f3aSAlexander V. Chernikov { IP_FW_TABLES_XLIST, 0, HDIR_GET, list_tables }, 32866b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XLIST, 0, HDIR_GET, dump_table_v0 }, 32876b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XLIST, 1, HDIR_GET, dump_table_v1 }, 32886b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XADD, 0, HDIR_BOTH, manage_table_ent_v0 }, 32896b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XADD, 1, HDIR_BOTH, manage_table_ent_v1 }, 32906b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XDEL, 0, HDIR_BOTH, manage_table_ent_v0 }, 32916b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XDEL, 1, HDIR_BOTH, manage_table_ent_v1 }, 32926b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XFIND, 0, HDIR_GET, find_table_entry }, 32936b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XSWAP, 0, HDIR_SET, swap_table }, 32946b988f3aSAlexander V. Chernikov { IP_FW_TABLES_ALIST, 0, HDIR_GET, list_table_algo }, 32956b988f3aSAlexander V. Chernikov { IP_FW_TABLE_XGETSIZE, 0, HDIR_GET, get_table_size }, 32966b988f3aSAlexander V. Chernikov }; 32976b988f3aSAlexander V. Chernikov 3298b309f085SAndrey V. Elsukov static int 32996b988f3aSAlexander V. Chernikov destroy_table_locked(struct namedobj_instance *ni, struct named_object *no, 33006b988f3aSAlexander V. Chernikov void *arg) 33016b988f3aSAlexander V. Chernikov { 33026b988f3aSAlexander V. Chernikov 33036b988f3aSAlexander V. Chernikov unlink_table((struct ip_fw_chain *)arg, (struct table_config *)no); 33046b988f3aSAlexander V. Chernikov if (ipfw_objhash_free_idx(ni, no->kidx) != 0) 33056b988f3aSAlexander V. Chernikov printf("Error unlinking kidx %d from table %s\n", 33066b988f3aSAlexander V. Chernikov no->kidx, no->name); 33076b988f3aSAlexander V. Chernikov free_table_config(ni, (struct table_config *)no); 3308b309f085SAndrey V. Elsukov return (0); 33096b988f3aSAlexander V. Chernikov } 33106b988f3aSAlexander V. Chernikov 33116b988f3aSAlexander V. Chernikov /* 33126b988f3aSAlexander V. Chernikov * Shuts tables module down. 33136b988f3aSAlexander V. Chernikov */ 33146b988f3aSAlexander V. Chernikov void 33156b988f3aSAlexander V. Chernikov ipfw_destroy_tables(struct ip_fw_chain *ch, int last) 33166b988f3aSAlexander V. Chernikov { 33176b988f3aSAlexander V. Chernikov 33186b988f3aSAlexander V. Chernikov IPFW_DEL_SOPT_HANDLER(last, scodes); 331974b22066SAlexander V. Chernikov IPFW_DEL_OBJ_REWRITER(last, opcodes); 33206b988f3aSAlexander V. Chernikov 33216b988f3aSAlexander V. Chernikov /* Remove all tables from working set */ 33226b988f3aSAlexander V. Chernikov IPFW_UH_WLOCK(ch); 33236b988f3aSAlexander V. Chernikov IPFW_WLOCK(ch); 33246b988f3aSAlexander V. Chernikov ipfw_objhash_foreach(CHAIN_TO_NI(ch), destroy_table_locked, ch); 33256b988f3aSAlexander V. Chernikov IPFW_WUNLOCK(ch); 33266b988f3aSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 33276b988f3aSAlexander V. Chernikov 33286b988f3aSAlexander V. Chernikov /* Free pointers itself */ 33296b988f3aSAlexander V. Chernikov free(ch->tablestate, M_IPFW); 33306b988f3aSAlexander V. Chernikov 33316b988f3aSAlexander V. Chernikov ipfw_table_value_destroy(ch, last); 33326b988f3aSAlexander V. Chernikov ipfw_table_algo_destroy(ch); 33336b988f3aSAlexander V. Chernikov 33346b988f3aSAlexander V. Chernikov ipfw_objhash_destroy(CHAIN_TO_NI(ch)); 33356b988f3aSAlexander V. Chernikov free(CHAIN_TO_TCFG(ch), M_IPFW); 33366b988f3aSAlexander V. Chernikov } 33376b988f3aSAlexander V. Chernikov 33386b988f3aSAlexander V. Chernikov /* 33396b988f3aSAlexander V. Chernikov * Starts tables module. 33406b988f3aSAlexander V. Chernikov */ 33416b988f3aSAlexander V. Chernikov int 33426b988f3aSAlexander V. Chernikov ipfw_init_tables(struct ip_fw_chain *ch, int first) 33436b988f3aSAlexander V. Chernikov { 33446b988f3aSAlexander V. Chernikov struct tables_config *tcfg; 33456b988f3aSAlexander V. Chernikov 33466b988f3aSAlexander V. Chernikov /* Allocate pointers */ 33476b988f3aSAlexander V. Chernikov ch->tablestate = malloc(V_fw_tables_max * sizeof(struct table_info), 33486b988f3aSAlexander V. Chernikov M_IPFW, M_WAITOK | M_ZERO); 33496b988f3aSAlexander V. Chernikov 33506b988f3aSAlexander V. Chernikov tcfg = malloc(sizeof(struct tables_config), M_IPFW, M_WAITOK | M_ZERO); 33516b988f3aSAlexander V. Chernikov tcfg->namehash = ipfw_objhash_create(V_fw_tables_max); 33526b988f3aSAlexander V. Chernikov ch->tblcfg = tcfg; 33536b988f3aSAlexander V. Chernikov 33546b988f3aSAlexander V. Chernikov ipfw_table_value_init(ch, first); 33556b988f3aSAlexander V. Chernikov ipfw_table_algo_init(ch); 33566b988f3aSAlexander V. Chernikov 335774b22066SAlexander V. Chernikov IPFW_ADD_OBJ_REWRITER(first, opcodes); 33586b988f3aSAlexander V. Chernikov IPFW_ADD_SOPT_HANDLER(first, scodes); 33596b988f3aSAlexander V. Chernikov return (0); 33606b988f3aSAlexander V. Chernikov } 33616b988f3aSAlexander V. Chernikov 33626b988f3aSAlexander V. Chernikov 33636b988f3aSAlexander V. Chernikov 3364