13b3a8eb9SGleb Smirnoff /*- 23b3a8eb9SGleb Smirnoff * Copyright (c) 2004 Ruslan Ermilov and Vsevolod Lobko. 33b3a8eb9SGleb Smirnoff * 43b3a8eb9SGleb Smirnoff * Redistribution and use in source and binary forms, with or without 53b3a8eb9SGleb Smirnoff * modification, are permitted provided that the following conditions 63b3a8eb9SGleb Smirnoff * are met: 73b3a8eb9SGleb Smirnoff * 1. Redistributions of source code must retain the above copyright 83b3a8eb9SGleb Smirnoff * notice, this list of conditions and the following disclaimer. 93b3a8eb9SGleb Smirnoff * 2. Redistributions in binary form must reproduce the above copyright 103b3a8eb9SGleb Smirnoff * notice, this list of conditions and the following disclaimer in the 113b3a8eb9SGleb Smirnoff * documentation and/or other materials provided with the distribution. 123b3a8eb9SGleb Smirnoff * 133b3a8eb9SGleb Smirnoff * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 143b3a8eb9SGleb Smirnoff * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 153b3a8eb9SGleb Smirnoff * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 163b3a8eb9SGleb Smirnoff * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 173b3a8eb9SGleb Smirnoff * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 183b3a8eb9SGleb Smirnoff * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 193b3a8eb9SGleb Smirnoff * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 203b3a8eb9SGleb Smirnoff * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 213b3a8eb9SGleb Smirnoff * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 223b3a8eb9SGleb Smirnoff * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 233b3a8eb9SGleb Smirnoff * SUCH DAMAGE. 243b3a8eb9SGleb Smirnoff */ 253b3a8eb9SGleb Smirnoff 263b3a8eb9SGleb Smirnoff #include <sys/cdefs.h> 273b3a8eb9SGleb Smirnoff __FBSDID("$FreeBSD$"); 283b3a8eb9SGleb Smirnoff 293b3a8eb9SGleb Smirnoff /* 30563b5ab1SAlexander V. Chernikov * Lookup table support for ipfw. 313b3a8eb9SGleb Smirnoff * 32ac35ff17SAlexander V. Chernikov * This file contains handlers for all generic tables' operations: 33563b5ab1SAlexander V. Chernikov * add/del/flush entries, list/dump tables etc.. 343b3a8eb9SGleb Smirnoff * 35563b5ab1SAlexander V. Chernikov * Table data modification is protected by both UH and runtimg lock 36563b5ab1SAlexander V. Chernikov * while reading configuration/data is protected by UH lock. 37563b5ab1SAlexander V. Chernikov * 38563b5ab1SAlexander V. Chernikov * Lookup algorithms for all table types are located in ip_fw_table_algo.c 393b3a8eb9SGleb Smirnoff */ 403b3a8eb9SGleb Smirnoff 413b3a8eb9SGleb Smirnoff #include "opt_ipfw.h" 423b3a8eb9SGleb Smirnoff 433b3a8eb9SGleb Smirnoff #include <sys/param.h> 443b3a8eb9SGleb Smirnoff #include <sys/systm.h> 453b3a8eb9SGleb Smirnoff #include <sys/malloc.h> 463b3a8eb9SGleb Smirnoff #include <sys/kernel.h> 473b3a8eb9SGleb Smirnoff #include <sys/lock.h> 483b3a8eb9SGleb Smirnoff #include <sys/rwlock.h> 493b3a8eb9SGleb Smirnoff #include <sys/socket.h> 50f1220db8SAlexander V. Chernikov #include <sys/socketvar.h> 513b3a8eb9SGleb Smirnoff #include <sys/queue.h> 523b3a8eb9SGleb Smirnoff #include <net/if.h> /* ip_fw.h requires IFNAMSIZ */ 533b3a8eb9SGleb Smirnoff #include <net/route.h> 543b3a8eb9SGleb Smirnoff #include <net/vnet.h> 553b3a8eb9SGleb Smirnoff 563b3a8eb9SGleb Smirnoff #include <netinet/in.h> 573b3a8eb9SGleb Smirnoff #include <netinet/ip_var.h> /* struct ipfw_rule_ref */ 583b3a8eb9SGleb Smirnoff #include <netinet/ip_fw.h> 593b3a8eb9SGleb Smirnoff 603b3a8eb9SGleb Smirnoff #include <netpfil/ipfw/ip_fw_private.h> 61ea761a5dSAlexander V. Chernikov #include <netpfil/ipfw/ip_fw_table.h> 623b3a8eb9SGleb Smirnoff 633b3a8eb9SGleb Smirnoff 643b3a8eb9SGleb Smirnoff /* 65b074b7bbSAlexander V. Chernikov * Table has the following `type` concepts: 66b074b7bbSAlexander V. Chernikov * 679f7d47b0SAlexander V. Chernikov * `no.type` represents lookup key type (cidr, ifp, uid, etc..) 689f7d47b0SAlexander V. Chernikov * `ta->atype` represents exact lookup algorithm. 69b074b7bbSAlexander V. Chernikov * For example, we can use more efficient search schemes if we plan 70b074b7bbSAlexander V. Chernikov * to use some specific table for storing host-routes only. 719490a627SAlexander V. Chernikov * `ftype` (at the moment )is pure userland field helping to properly 729490a627SAlexander V. Chernikov * format value data e.g. "value is IPv4 nexthop" or "value is DSCP" 739490a627SAlexander V. Chernikov * or "value is port". 74b074b7bbSAlexander V. Chernikov * 75b074b7bbSAlexander V. Chernikov */ 76b074b7bbSAlexander V. Chernikov struct table_config { 77b074b7bbSAlexander V. Chernikov struct named_object no; 78ac35ff17SAlexander V. Chernikov uint8_t vtype; /* format table type */ 79b074b7bbSAlexander V. Chernikov uint8_t linked; /* 1 if already linked */ 80db785d31SAlexander V. Chernikov uint16_t spare; 81b074b7bbSAlexander V. Chernikov uint32_t count; /* Number of records */ 82db785d31SAlexander V. Chernikov uint64_t flags; /* state flags */ 83b074b7bbSAlexander V. Chernikov char tablename[64]; /* table name */ 849f7d47b0SAlexander V. Chernikov struct table_algo *ta; /* Callbacks for given algo */ 859f7d47b0SAlexander V. Chernikov void *astate; /* algorithm state */ 869f7d47b0SAlexander V. Chernikov struct table_info ti; /* data to put to table_info */ 87b074b7bbSAlexander V. Chernikov }; 88b074b7bbSAlexander V. Chernikov 89b074b7bbSAlexander V. Chernikov struct tables_config { 90b074b7bbSAlexander V. Chernikov struct namedobj_instance *namehash; 919f7d47b0SAlexander V. Chernikov int algo_count; 929f7d47b0SAlexander V. Chernikov struct table_algo *algo[256]; 93b074b7bbSAlexander V. Chernikov }; 94b074b7bbSAlexander V. Chernikov 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, 98db785d31SAlexander V. Chernikov struct tid_info *ti, struct table_algo *ta, char *adata, uint8_t vtype); 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, 102db785d31SAlexander V. Chernikov char *aname, uint8_t vtype); 103b074b7bbSAlexander V. Chernikov static void link_table(struct ip_fw_chain *chain, struct table_config *tc); 104b074b7bbSAlexander V. Chernikov static void unlink_table(struct ip_fw_chain *chain, struct table_config *tc); 105b074b7bbSAlexander V. Chernikov static void free_table_state(void **state, void **xstate, uint8_t type); 1062d99a349SAlexander V. Chernikov static int export_tables(struct ip_fw_chain *ch, ipfw_obj_lheader *olh, 1072d99a349SAlexander V. Chernikov struct sockopt_data *sd); 108ac35ff17SAlexander V. Chernikov static void export_table_info(struct ip_fw_chain *ch, struct table_config *tc, 109ac35ff17SAlexander V. Chernikov ipfw_xtable_info *i); 11081d3153dSAlexander V. Chernikov static int dump_table_tentry(void *e, void *arg); 111f1220db8SAlexander V. Chernikov static int dump_table_xentry(void *e, void *arg); 112b074b7bbSAlexander V. Chernikov 1132d99a349SAlexander V. Chernikov static int ipfw_dump_table_v0(struct ip_fw_chain *ch, struct sockopt_data *sd); 1142d99a349SAlexander V. Chernikov static int ipfw_dump_table_v1(struct ip_fw_chain *ch, struct sockopt_data *sd); 115db785d31SAlexander V. Chernikov static int ipfw_manage_table_ent_v0(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 116ac35ff17SAlexander V. Chernikov struct sockopt_data *sd); 117db785d31SAlexander V. Chernikov static int ipfw_manage_table_ent_v1(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 118ac35ff17SAlexander V. Chernikov struct sockopt_data *sd); 119ac35ff17SAlexander V. Chernikov 120db785d31SAlexander V. Chernikov static int modify_table(struct ip_fw_chain *ch, struct table_config *tc, 121db785d31SAlexander V. Chernikov struct table_algo *ta, void *ta_buf, uint64_t pflags); 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 127b074b7bbSAlexander V. Chernikov #define CHAIN_TO_TCFG(chain) ((struct tables_config *)(chain)->tblcfg) 128b074b7bbSAlexander V. Chernikov #define CHAIN_TO_NI(chain) (CHAIN_TO_TCFG(chain)->namehash) 1299f7d47b0SAlexander V. Chernikov #define KIDX_TO_TI(ch, k) (&(((struct table_info *)(ch)->tablestate)[k])) 130b074b7bbSAlexander V. Chernikov 131b074b7bbSAlexander V. Chernikov 1323b3a8eb9SGleb Smirnoff 1333b3a8eb9SGleb Smirnoff int 1341832a7b3SAlexander V. Chernikov add_table_entry(struct ip_fw_chain *ch, struct tid_info *ti, 135b074b7bbSAlexander V. Chernikov struct tentry_info *tei) 1363b3a8eb9SGleb Smirnoff { 137db785d31SAlexander V. Chernikov struct table_config *tc; 1389f7d47b0SAlexander V. Chernikov struct table_algo *ta; 139b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 140b074b7bbSAlexander V. Chernikov uint16_t kidx; 1419f7d47b0SAlexander V. Chernikov int error; 142adea6201SAlexander V. Chernikov uint32_t num; 143db785d31SAlexander V. Chernikov uint64_t aflags; 1449f7d47b0SAlexander V. Chernikov char ta_buf[128]; 1453b3a8eb9SGleb Smirnoff 1469f7d47b0SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 1479f7d47b0SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 1489f7d47b0SAlexander V. Chernikov 1499f7d47b0SAlexander V. Chernikov /* 1509f7d47b0SAlexander V. Chernikov * Find and reference existing table. 1519f7d47b0SAlexander V. Chernikov */ 1529f7d47b0SAlexander V. Chernikov ta = NULL; 1539f7d47b0SAlexander V. Chernikov if ((tc = find_table(ni, ti)) != NULL) { 1549f7d47b0SAlexander V. Chernikov /* check table type */ 1559f7d47b0SAlexander V. Chernikov if (tc->no.type != ti->type) { 1569f7d47b0SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1573b3a8eb9SGleb Smirnoff return (EINVAL); 1583b3a8eb9SGleb Smirnoff } 1593b3a8eb9SGleb Smirnoff 1609f7d47b0SAlexander V. Chernikov /* Reference and unlock */ 1619f7d47b0SAlexander V. Chernikov tc->no.refcnt++; 1629f7d47b0SAlexander V. Chernikov ta = tc->ta; 163db785d31SAlexander V. Chernikov aflags = tc->flags; 1649f7d47b0SAlexander V. Chernikov } 1659f7d47b0SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1663b3a8eb9SGleb Smirnoff 167ac35ff17SAlexander V. Chernikov if (tc == NULL) { 168db785d31SAlexander V. Chernikov /* Compability mode: create new table for old clients */ 169db785d31SAlexander V. Chernikov if ((tei->flags & TEI_FLAGS_COMPAT) == 0) 170db785d31SAlexander V. Chernikov return (ESRCH); 1713b3a8eb9SGleb Smirnoff 172db785d31SAlexander V. Chernikov error = create_table_internal(ch, ti, NULL, IPFW_VTYPE_U32); 173db785d31SAlexander V. Chernikov 174db785d31SAlexander V. Chernikov if (error != 0) 175db785d31SAlexander V. Chernikov return (error); 176db785d31SAlexander V. Chernikov 177db785d31SAlexander V. Chernikov /* Let's try to find & reference another time */ 178db785d31SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 179db785d31SAlexander V. Chernikov if ((tc = find_table(ni, ti)) == NULL) { 180db785d31SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 181db785d31SAlexander V. Chernikov return (EINVAL); 182db785d31SAlexander V. Chernikov } 183db785d31SAlexander V. Chernikov 184db785d31SAlexander V. Chernikov if (tc->no.type != ti->type) { 185db785d31SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 186db785d31SAlexander V. Chernikov return (EINVAL); 187db785d31SAlexander V. Chernikov } 188db785d31SAlexander V. Chernikov 189db785d31SAlexander V. Chernikov /* Reference and unlock */ 190db785d31SAlexander V. Chernikov tc->no.refcnt++; 191db785d31SAlexander V. Chernikov ta = tc->ta; 192db785d31SAlexander V. Chernikov aflags = tc->flags; 193db785d31SAlexander V. Chernikov 194db785d31SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 195db785d31SAlexander V. Chernikov } 196db785d31SAlexander V. Chernikov 197db785d31SAlexander V. Chernikov if (aflags != 0) { 198db785d31SAlexander V. Chernikov 199db785d31SAlexander V. Chernikov /* 200db785d31SAlexander V. Chernikov * Previous add/delete call returned non-zero state. 201db785d31SAlexander V. Chernikov * Run appropriate handler. 202db785d31SAlexander V. Chernikov */ 203db785d31SAlexander V. Chernikov error = modify_table(ch, tc, ta, &ta_buf, aflags); 204db785d31SAlexander V. Chernikov if (error != 0) 205db785d31SAlexander V. Chernikov return (error); 2069f7d47b0SAlexander V. Chernikov } 2073b3a8eb9SGleb Smirnoff 2089f7d47b0SAlexander V. Chernikov /* Prepare record (allocate memory) */ 2099f7d47b0SAlexander V. Chernikov memset(&ta_buf, 0, sizeof(ta_buf)); 21068394ec8SAlexander V. Chernikov error = ta->prepare_add(ch, tei, &ta_buf); 211db785d31SAlexander V. Chernikov if (error != 0) 2129f7d47b0SAlexander V. Chernikov return (error); 2133b3a8eb9SGleb Smirnoff 214b074b7bbSAlexander V. Chernikov IPFW_UH_WLOCK(ch); 2153b3a8eb9SGleb Smirnoff 216b074b7bbSAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 2173b3a8eb9SGleb Smirnoff 2189f7d47b0SAlexander V. Chernikov /* Drop reference we've used in first search */ 2199f7d47b0SAlexander V. Chernikov tc->no.refcnt--; 220db785d31SAlexander V. Chernikov /* Update aflags since it can be changed after previous read */ 221db785d31SAlexander V. Chernikov aflags = tc->flags; 222b074b7bbSAlexander V. Chernikov 223b074b7bbSAlexander V. Chernikov /* We've got valid table in @tc. Let's add data */ 2249f7d47b0SAlexander V. Chernikov kidx = tc->no.kidx; 2259f7d47b0SAlexander V. Chernikov ta = tc->ta; 226adea6201SAlexander V. Chernikov num = 0; 2279f7d47b0SAlexander V. Chernikov 228b074b7bbSAlexander V. Chernikov IPFW_WLOCK(ch); 229adea6201SAlexander V. Chernikov error = ta->add(tc->astate, KIDX_TO_TI(ch, kidx), tei, &ta_buf, 230adea6201SAlexander V. Chernikov &aflags, &num); 2313b3a8eb9SGleb Smirnoff IPFW_WUNLOCK(ch); 2329f7d47b0SAlexander V. Chernikov 233ac35ff17SAlexander V. Chernikov /* Update number of records. */ 234adea6201SAlexander V. Chernikov if (error == 0) 235adea6201SAlexander V. Chernikov tc->count += num; 2369f7d47b0SAlexander V. Chernikov 237db785d31SAlexander V. Chernikov tc->flags = aflags; 238db785d31SAlexander V. Chernikov 239b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 240b074b7bbSAlexander V. Chernikov 241ac35ff17SAlexander V. Chernikov /* Run cleaning callback anyway */ 24268394ec8SAlexander V. Chernikov ta->flush_entry(ch, tei, &ta_buf); 243b074b7bbSAlexander V. Chernikov 2449f7d47b0SAlexander V. Chernikov return (error); 2453b3a8eb9SGleb Smirnoff } 2463b3a8eb9SGleb Smirnoff 2473b3a8eb9SGleb Smirnoff int 2481832a7b3SAlexander V. Chernikov del_table_entry(struct ip_fw_chain *ch, struct tid_info *ti, 249b074b7bbSAlexander V. Chernikov struct tentry_info *tei) 2503b3a8eb9SGleb Smirnoff { 251b074b7bbSAlexander V. Chernikov struct table_config *tc; 2529f7d47b0SAlexander V. Chernikov struct table_algo *ta; 253b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 254b074b7bbSAlexander V. Chernikov uint16_t kidx; 2559f7d47b0SAlexander V. Chernikov int error; 256adea6201SAlexander V. Chernikov uint32_t num; 257db785d31SAlexander V. Chernikov uint64_t aflags; 2589f7d47b0SAlexander V. Chernikov char ta_buf[128]; 2593b3a8eb9SGleb Smirnoff 2609f7d47b0SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 261b074b7bbSAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 262b074b7bbSAlexander V. Chernikov if ((tc = find_table(ni, ti)) == NULL) { 2639f7d47b0SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 2643b3a8eb9SGleb Smirnoff return (ESRCH); 2653b3a8eb9SGleb Smirnoff } 2663b3a8eb9SGleb Smirnoff 267b074b7bbSAlexander V. Chernikov if (tc->no.type != ti->type) { 2689f7d47b0SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 2693b3a8eb9SGleb Smirnoff return (EINVAL); 2703b3a8eb9SGleb Smirnoff } 2719f7d47b0SAlexander V. Chernikov 272db785d31SAlexander V. Chernikov aflags = tc->flags; 2739f7d47b0SAlexander V. Chernikov ta = tc->ta; 2749f7d47b0SAlexander V. Chernikov 275db785d31SAlexander V. Chernikov if (aflags != 0) { 276db785d31SAlexander V. Chernikov 277db785d31SAlexander V. Chernikov /* 278db785d31SAlexander V. Chernikov * Give the chance to algo to shrink its state. 279db785d31SAlexander V. Chernikov */ 280db785d31SAlexander V. Chernikov tc->no.refcnt++; 281db785d31SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 282db785d31SAlexander V. Chernikov memset(&ta_buf, 0, sizeof(ta_buf)); 283db785d31SAlexander V. Chernikov 284db785d31SAlexander V. Chernikov error = modify_table(ch, tc, ta, &ta_buf, aflags); 285db785d31SAlexander V. Chernikov 286db785d31SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 287db785d31SAlexander V. Chernikov tc->no.refcnt--; 288db785d31SAlexander V. Chernikov aflags = tc->flags; 289db785d31SAlexander V. Chernikov 290db785d31SAlexander V. Chernikov if (error != 0) { 291db785d31SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 292db785d31SAlexander V. Chernikov return (error); 293db785d31SAlexander V. Chernikov } 294db785d31SAlexander V. Chernikov } 295db785d31SAlexander V. Chernikov 296db785d31SAlexander V. Chernikov /* 297db785d31SAlexander V. Chernikov * We assume ta_buf size is enough for storing 298db785d31SAlexander V. Chernikov * prepare_del() key, so we're running under UH_LOCK here. 299db785d31SAlexander V. Chernikov */ 3009f7d47b0SAlexander V. Chernikov memset(&ta_buf, 0, sizeof(ta_buf)); 30168394ec8SAlexander V. Chernikov if ((error = ta->prepare_del(ch, tei, &ta_buf)) != 0) { 3029f7d47b0SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 3039f7d47b0SAlexander V. Chernikov return (error); 3049f7d47b0SAlexander V. Chernikov } 3059f7d47b0SAlexander V. Chernikov 306b074b7bbSAlexander V. Chernikov kidx = tc->no.kidx; 307adea6201SAlexander V. Chernikov num = 0; 308b074b7bbSAlexander V. Chernikov 309b074b7bbSAlexander V. Chernikov IPFW_WLOCK(ch); 310adea6201SAlexander V. Chernikov error = ta->del(tc->astate, KIDX_TO_TI(ch, kidx), tei, &ta_buf, 311adea6201SAlexander V. Chernikov &aflags, &num); 3123b3a8eb9SGleb Smirnoff IPFW_WUNLOCK(ch); 3133b3a8eb9SGleb Smirnoff 3149f7d47b0SAlexander V. Chernikov if (error == 0) 315adea6201SAlexander V. Chernikov tc->count -= num; 316db785d31SAlexander V. Chernikov tc->flags = aflags; 317b074b7bbSAlexander V. Chernikov 3189f7d47b0SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 3193b3a8eb9SGleb Smirnoff 32068394ec8SAlexander V. Chernikov ta->flush_entry(ch, tei, &ta_buf); 321ac35ff17SAlexander V. Chernikov 322ac35ff17SAlexander V. Chernikov return (error); 323ac35ff17SAlexander V. Chernikov } 324ac35ff17SAlexander V. Chernikov 325db785d31SAlexander V. Chernikov /* 326db785d31SAlexander V. Chernikov * Runs callbacks to modify algo state (typically, table resize). 327db785d31SAlexander V. Chernikov * 328db785d31SAlexander V. Chernikov * Callbacks order: 329db785d31SAlexander V. Chernikov * 1) alloc_modify (no locks, M_WAITOK) - alloc new state based on @pflags. 330db785d31SAlexander V. Chernikov * 2) prepare_modifyt (UH_WLOCK) - copy old data into new storage 331db785d31SAlexander V. Chernikov * 3) modify (UH_WLOCK + WLOCK) - switch pointers 332db785d31SAlexander V. Chernikov * 4) flush_modify (no locks) - free state, if needed 333db785d31SAlexander V. Chernikov */ 334db785d31SAlexander V. Chernikov static int 335db785d31SAlexander V. Chernikov modify_table(struct ip_fw_chain *ch, struct table_config *tc, 336db785d31SAlexander V. Chernikov struct table_algo *ta, void *ta_buf, uint64_t pflags) 337db785d31SAlexander V. Chernikov { 338db785d31SAlexander V. Chernikov struct table_info *ti; 339db785d31SAlexander V. Chernikov int error; 340db785d31SAlexander V. Chernikov 341db785d31SAlexander V. Chernikov error = ta->prepare_mod(ta_buf, &pflags); 342db785d31SAlexander V. Chernikov if (error != 0) 343db785d31SAlexander V. Chernikov return (error); 344db785d31SAlexander V. Chernikov 345db785d31SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 346db785d31SAlexander V. Chernikov ti = KIDX_TO_TI(ch, tc->no.kidx); 347db785d31SAlexander V. Chernikov 34868394ec8SAlexander V. Chernikov error = ta->fill_mod(tc->astate, ti, ta_buf, &pflags); 349db785d31SAlexander V. Chernikov 350db785d31SAlexander V. Chernikov /* 351db785d31SAlexander V. Chernikov * prepare_mofify may return zero in @pflags to 352db785d31SAlexander V. Chernikov * indicate that modifications are not unnesessary. 353db785d31SAlexander V. Chernikov */ 354db785d31SAlexander V. Chernikov 355db785d31SAlexander V. Chernikov if (error == 0 && pflags != 0) { 356db785d31SAlexander V. Chernikov /* Do actual modification */ 357db785d31SAlexander V. Chernikov IPFW_WLOCK(ch); 35868394ec8SAlexander V. Chernikov ta->modify(tc->astate, ti, ta_buf, pflags); 359db785d31SAlexander V. Chernikov IPFW_WUNLOCK(ch); 360db785d31SAlexander V. Chernikov } 361db785d31SAlexander V. Chernikov 362db785d31SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 363db785d31SAlexander V. Chernikov 364db785d31SAlexander V. Chernikov ta->flush_mod(ta_buf); 365db785d31SAlexander V. Chernikov 366db785d31SAlexander V. Chernikov return (error); 367db785d31SAlexander V. Chernikov } 368db785d31SAlexander V. Chernikov 369ac35ff17SAlexander V. Chernikov int 370db785d31SAlexander V. Chernikov ipfw_manage_table_ent(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 371ac35ff17SAlexander V. Chernikov struct sockopt_data *sd) 372ac35ff17SAlexander V. Chernikov { 373ac35ff17SAlexander V. Chernikov int error; 374ac35ff17SAlexander V. Chernikov 375ac35ff17SAlexander V. Chernikov switch (op3->version) { 376ac35ff17SAlexander V. Chernikov case 0: 377db785d31SAlexander V. Chernikov error = ipfw_manage_table_ent_v0(ch, op3, sd); 378ac35ff17SAlexander V. Chernikov break; 379ac35ff17SAlexander V. Chernikov case 1: 380db785d31SAlexander V. Chernikov error = ipfw_manage_table_ent_v1(ch, op3, sd); 381ac35ff17SAlexander V. Chernikov break; 382ac35ff17SAlexander V. Chernikov default: 383ac35ff17SAlexander V. Chernikov error = ENOTSUP; 384ac35ff17SAlexander V. Chernikov } 385ac35ff17SAlexander V. Chernikov 386ac35ff17SAlexander V. Chernikov return (error); 387ac35ff17SAlexander V. Chernikov } 388ac35ff17SAlexander V. Chernikov 389ac35ff17SAlexander V. Chernikov /* 390ac35ff17SAlexander V. Chernikov * Adds or deletes record in table. 391ac35ff17SAlexander V. Chernikov * Data layout (v0): 392ac35ff17SAlexander V. Chernikov * Request: [ ip_fw3_opheader ipfw_table_xentry ] 393ac35ff17SAlexander V. Chernikov * 394ac35ff17SAlexander V. Chernikov * Returns 0 on success 395ac35ff17SAlexander V. Chernikov */ 396ac35ff17SAlexander V. Chernikov static int 397db785d31SAlexander V. Chernikov ipfw_manage_table_ent_v0(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 398ac35ff17SAlexander V. Chernikov struct sockopt_data *sd) 399ac35ff17SAlexander V. Chernikov { 400ac35ff17SAlexander V. Chernikov ipfw_table_xentry *xent; 401ac35ff17SAlexander V. Chernikov struct tentry_info tei; 402ac35ff17SAlexander V. Chernikov struct tid_info ti; 403ac35ff17SAlexander V. Chernikov int error, hdrlen, read; 404ac35ff17SAlexander V. Chernikov 405ac35ff17SAlexander V. Chernikov hdrlen = offsetof(ipfw_table_xentry, k); 406ac35ff17SAlexander V. Chernikov 407ac35ff17SAlexander V. Chernikov /* Check minimum header size */ 408ac35ff17SAlexander V. Chernikov if (sd->valsize < (sizeof(*op3) + hdrlen)) 409ac35ff17SAlexander V. Chernikov return (EINVAL); 410ac35ff17SAlexander V. Chernikov 411ac35ff17SAlexander V. Chernikov read = sizeof(ip_fw3_opheader); 412ac35ff17SAlexander V. Chernikov 413ac35ff17SAlexander V. Chernikov /* Check if xentry len field is valid */ 414ac35ff17SAlexander V. Chernikov xent = (ipfw_table_xentry *)(op3 + 1); 415ac35ff17SAlexander V. Chernikov if (xent->len < hdrlen || xent->len + read > sd->valsize) 416ac35ff17SAlexander V. Chernikov return (EINVAL); 417ac35ff17SAlexander V. Chernikov 418ac35ff17SAlexander V. Chernikov memset(&tei, 0, sizeof(tei)); 419ac35ff17SAlexander V. Chernikov tei.paddr = &xent->k; 420ac35ff17SAlexander V. Chernikov tei.masklen = xent->masklen; 421ac35ff17SAlexander V. Chernikov tei.value = xent->value; 422ac35ff17SAlexander V. Chernikov /* Old requests compability */ 423db785d31SAlexander V. Chernikov tei.flags = TEI_FLAGS_COMPAT; 424ac35ff17SAlexander V. Chernikov if (xent->type == IPFW_TABLE_CIDR) { 425ac35ff17SAlexander V. Chernikov if (xent->len - hdrlen == sizeof(in_addr_t)) 426ac35ff17SAlexander V. Chernikov tei.subtype = AF_INET; 427ac35ff17SAlexander V. Chernikov else 428ac35ff17SAlexander V. Chernikov tei.subtype = AF_INET6; 429ac35ff17SAlexander V. Chernikov } 430ac35ff17SAlexander V. Chernikov 431ac35ff17SAlexander V. Chernikov memset(&ti, 0, sizeof(ti)); 432ac35ff17SAlexander V. Chernikov ti.uidx = xent->tbl; 433ac35ff17SAlexander V. Chernikov ti.type = xent->type; 434ac35ff17SAlexander V. Chernikov 435ac35ff17SAlexander V. Chernikov error = (op3->opcode == IP_FW_TABLE_XADD) ? 4361832a7b3SAlexander V. Chernikov add_table_entry(ch, &ti, &tei) : 4371832a7b3SAlexander V. Chernikov del_table_entry(ch, &ti, &tei); 438ac35ff17SAlexander V. Chernikov 439ac35ff17SAlexander V. Chernikov return (error); 440ac35ff17SAlexander V. Chernikov } 441ac35ff17SAlexander V. Chernikov 442ac35ff17SAlexander V. Chernikov /* 443ac35ff17SAlexander V. Chernikov * Adds or deletes record in table. 444ac35ff17SAlexander V. Chernikov * Data layout (v1)(current): 445db785d31SAlexander V. Chernikov * Request: [ ipfw_obj_header 446db785d31SAlexander V. Chernikov * ipfw_obj_ctlv(IPFW_TLV_TBLENT_LIST) [ ipfw_obj_tentry x N ] 447db785d31SAlexander V. Chernikov * ] 448ac35ff17SAlexander V. Chernikov * 449ac35ff17SAlexander V. Chernikov * Returns 0 on success 450ac35ff17SAlexander V. Chernikov */ 451ac35ff17SAlexander V. Chernikov static int 452db785d31SAlexander V. Chernikov ipfw_manage_table_ent_v1(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 453ac35ff17SAlexander V. Chernikov struct sockopt_data *sd) 454ac35ff17SAlexander V. Chernikov { 455ac35ff17SAlexander V. Chernikov ipfw_obj_tentry *tent; 456db785d31SAlexander V. Chernikov ipfw_obj_ctlv *ctlv; 457ac35ff17SAlexander V. Chernikov ipfw_obj_header *oh; 458ac35ff17SAlexander V. Chernikov struct tentry_info tei; 459ac35ff17SAlexander V. Chernikov struct tid_info ti; 460ac35ff17SAlexander V. Chernikov int error, read; 461ac35ff17SAlexander V. Chernikov 462ac35ff17SAlexander V. Chernikov /* Check minimum header size */ 463db785d31SAlexander V. Chernikov if (sd->valsize < (sizeof(*oh) + sizeof(*ctlv))) 464ac35ff17SAlexander V. Chernikov return (EINVAL); 465ac35ff17SAlexander V. Chernikov 466ac35ff17SAlexander V. Chernikov /* Check if passed data is too long */ 467ac35ff17SAlexander V. Chernikov if (sd->valsize != sd->kavail) 468ac35ff17SAlexander V. Chernikov return (EINVAL); 469ac35ff17SAlexander V. Chernikov 470ac35ff17SAlexander V. Chernikov oh = (ipfw_obj_header *)sd->kbuf; 471ac35ff17SAlexander V. Chernikov 472ac35ff17SAlexander V. Chernikov /* Basic length checks for TLVs */ 473ac35ff17SAlexander V. Chernikov if (oh->ntlv.head.length != sizeof(oh->ntlv)) 474ac35ff17SAlexander V. Chernikov return (EINVAL); 475ac35ff17SAlexander V. Chernikov 476ac35ff17SAlexander V. Chernikov read = sizeof(*oh); 477ac35ff17SAlexander V. Chernikov 478db785d31SAlexander V. Chernikov ctlv = (ipfw_obj_ctlv *)(oh + 1); 479db785d31SAlexander V. Chernikov if (ctlv->head.length + read != sd->valsize) 480db785d31SAlexander V. Chernikov return (EINVAL); 481db785d31SAlexander V. Chernikov 482db785d31SAlexander V. Chernikov /* 483db785d31SAlexander V. Chernikov * TODO: permit adding multiple entries for given table 484db785d31SAlexander V. Chernikov * at once 485db785d31SAlexander V. Chernikov */ 486db785d31SAlexander V. Chernikov if (ctlv->count != 1) 487db785d31SAlexander V. Chernikov return (EOPNOTSUPP); 488db785d31SAlexander V. Chernikov 489db785d31SAlexander V. Chernikov read += sizeof(*ctlv); 490db785d31SAlexander V. Chernikov 491ac35ff17SAlexander V. Chernikov /* Assume tentry may grow to support larger keys */ 492db785d31SAlexander V. Chernikov tent = (ipfw_obj_tentry *)(ctlv + 1); 493ac35ff17SAlexander V. Chernikov if (tent->head.length < sizeof(*tent) || 494ac35ff17SAlexander V. Chernikov tent->head.length + read > sd->valsize) 495ac35ff17SAlexander V. Chernikov return (EINVAL); 496ac35ff17SAlexander V. Chernikov 49781d3153dSAlexander V. Chernikov /* Convert data into kernel request objects */ 498ac35ff17SAlexander V. Chernikov memset(&tei, 0, sizeof(tei)); 499ac35ff17SAlexander V. Chernikov tei.paddr = &tent->k; 500ac35ff17SAlexander V. Chernikov tei.subtype = tent->subtype; 501ac35ff17SAlexander V. Chernikov tei.masklen = tent->masklen; 50281d3153dSAlexander V. Chernikov if (tent->head.flags & IPFW_TF_UPDATE) 503ac35ff17SAlexander V. Chernikov tei.flags |= TEI_FLAGS_UPDATE; 504ac35ff17SAlexander V. Chernikov tei.value = tent->value; 505ac35ff17SAlexander V. Chernikov 50681d3153dSAlexander V. Chernikov objheader_to_ti(oh, &ti); 507ac35ff17SAlexander V. Chernikov ti.type = oh->ntlv.type; 50881d3153dSAlexander V. Chernikov ti.uidx = tent->idx; 509ac35ff17SAlexander V. Chernikov 510ac35ff17SAlexander V. Chernikov error = (oh->opheader.opcode == IP_FW_TABLE_XADD) ? 5111832a7b3SAlexander V. Chernikov add_table_entry(ch, &ti, &tei) : 5121832a7b3SAlexander V. Chernikov del_table_entry(ch, &ti, &tei); 513ac35ff17SAlexander V. Chernikov 514ac35ff17SAlexander V. Chernikov return (error); 515ac35ff17SAlexander V. Chernikov } 516ac35ff17SAlexander V. Chernikov 51781d3153dSAlexander V. Chernikov /* 51881d3153dSAlexander V. Chernikov * Looks up an entry in given table. 51981d3153dSAlexander V. Chernikov * Data layout (v0)(current): 52081d3153dSAlexander V. Chernikov * Request: [ ipfw_obj_header ipfw_obj_tentry ] 52181d3153dSAlexander V. Chernikov * Reply: [ ipfw_obj_header ipfw_obj_tentry ] 52281d3153dSAlexander V. Chernikov * 52381d3153dSAlexander V. Chernikov * Returns 0 on success 52481d3153dSAlexander V. Chernikov */ 52581d3153dSAlexander V. Chernikov int 52681d3153dSAlexander V. Chernikov ipfw_find_table_entry(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 52781d3153dSAlexander V. Chernikov struct sockopt_data *sd) 52881d3153dSAlexander V. Chernikov { 52981d3153dSAlexander V. Chernikov ipfw_obj_tentry *tent; 53081d3153dSAlexander V. Chernikov ipfw_obj_header *oh; 53181d3153dSAlexander V. Chernikov struct tid_info ti; 53281d3153dSAlexander V. Chernikov struct table_config *tc; 53381d3153dSAlexander V. Chernikov struct table_algo *ta; 53481d3153dSAlexander V. Chernikov struct table_info *kti; 53581d3153dSAlexander V. Chernikov struct namedobj_instance *ni; 53681d3153dSAlexander V. Chernikov int error, plen; 53781d3153dSAlexander V. Chernikov void *paddr; 53881d3153dSAlexander V. Chernikov size_t sz; 53981d3153dSAlexander V. Chernikov 54081d3153dSAlexander V. Chernikov /* Check minimum header size */ 54181d3153dSAlexander V. Chernikov sz = sizeof(*oh) + sizeof(*tent); 54281d3153dSAlexander V. Chernikov if (sd->valsize != sz) 54381d3153dSAlexander V. Chernikov return (EINVAL); 54481d3153dSAlexander V. Chernikov 54581d3153dSAlexander V. Chernikov oh = (struct _ipfw_obj_header *)ipfw_get_sopt_header(sd, sz); 54681d3153dSAlexander V. Chernikov tent = (ipfw_obj_tentry *)(oh + 1); 54781d3153dSAlexander V. Chernikov 54881d3153dSAlexander V. Chernikov /* Basic length checks for TLVs */ 54981d3153dSAlexander V. Chernikov if (oh->ntlv.head.length != sizeof(oh->ntlv)) 55081d3153dSAlexander V. Chernikov return (EINVAL); 55181d3153dSAlexander V. Chernikov 55281d3153dSAlexander V. Chernikov objheader_to_ti(oh, &ti); 55381d3153dSAlexander V. Chernikov ti.type = oh->ntlv.type; 55481d3153dSAlexander V. Chernikov ti.uidx = tent->idx; 55581d3153dSAlexander V. Chernikov 55681d3153dSAlexander V. Chernikov IPFW_UH_RLOCK(ch); 55781d3153dSAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 55881d3153dSAlexander V. Chernikov 55981d3153dSAlexander V. Chernikov /* 56081d3153dSAlexander V. Chernikov * Find existing table and check its type . 56181d3153dSAlexander V. Chernikov */ 56281d3153dSAlexander V. Chernikov ta = NULL; 56381d3153dSAlexander V. Chernikov if ((tc = find_table(ni, &ti)) == NULL) { 56481d3153dSAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 56581d3153dSAlexander V. Chernikov return (ESRCH); 56681d3153dSAlexander V. Chernikov } 56781d3153dSAlexander V. Chernikov 56881d3153dSAlexander V. Chernikov /* check table type */ 56981d3153dSAlexander V. Chernikov if (tc->no.type != ti.type) { 57081d3153dSAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 57181d3153dSAlexander V. Chernikov return (EINVAL); 57281d3153dSAlexander V. Chernikov } 57381d3153dSAlexander V. Chernikov 57481d3153dSAlexander V. Chernikov /* Check lookup key for validness */ 57581d3153dSAlexander V. Chernikov plen = 0; 57681d3153dSAlexander V. Chernikov paddr = &tent->k; 57781d3153dSAlexander V. Chernikov switch (ti.type) 57881d3153dSAlexander V. Chernikov { 57981d3153dSAlexander V. Chernikov case IPFW_TABLE_CIDR: 58081d3153dSAlexander V. Chernikov if (tent->subtype == AF_INET) 58181d3153dSAlexander V. Chernikov plen = sizeof(struct in_addr); 58281d3153dSAlexander V. Chernikov else if (tent->subtype == AF_INET6) 58381d3153dSAlexander V. Chernikov plen = sizeof(struct in6_addr); 58481d3153dSAlexander V. Chernikov else { 58581d3153dSAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 58681d3153dSAlexander V. Chernikov return (EINVAL); 58781d3153dSAlexander V. Chernikov } 58881d3153dSAlexander V. Chernikov break; 58981d3153dSAlexander V. Chernikov case IPFW_TABLE_INTERFACE: 59081d3153dSAlexander V. Chernikov /* Check key first */ 59181d3153dSAlexander V. Chernikov plen = sizeof(tent->k.iface); 59281d3153dSAlexander V. Chernikov if (strnlen(tent->k.iface, plen) == plen) { 59381d3153dSAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 59481d3153dSAlexander V. Chernikov return (EINVAL); 59581d3153dSAlexander V. Chernikov } 59681d3153dSAlexander V. Chernikov 59781d3153dSAlexander V. Chernikov break; 59881d3153dSAlexander V. Chernikov default: 59981d3153dSAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 60081d3153dSAlexander V. Chernikov return (ENOTSUP); 60181d3153dSAlexander V. Chernikov } 60281d3153dSAlexander V. Chernikov kti = KIDX_TO_TI(ch, tc->no.kidx); 60381d3153dSAlexander V. Chernikov ta = tc->ta; 60481d3153dSAlexander V. Chernikov 60581d3153dSAlexander V. Chernikov error = ta->find_tentry(tc->astate, kti, paddr, plen, tent); 60681d3153dSAlexander V. Chernikov 60781d3153dSAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 60881d3153dSAlexander V. Chernikov 60981d3153dSAlexander V. Chernikov return (error); 61081d3153dSAlexander V. Chernikov } 61181d3153dSAlexander V. Chernikov 612ac35ff17SAlexander V. Chernikov int 613ac35ff17SAlexander V. Chernikov ipfw_flush_table(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 614ac35ff17SAlexander V. Chernikov struct sockopt_data *sd) 615ac35ff17SAlexander V. Chernikov { 616ac35ff17SAlexander V. Chernikov int error; 617ac35ff17SAlexander V. Chernikov struct _ipfw_obj_header *oh; 618ac35ff17SAlexander V. Chernikov struct tid_info ti; 619ac35ff17SAlexander V. Chernikov 620ac35ff17SAlexander V. Chernikov if (sd->valsize != sizeof(*oh)) 621ac35ff17SAlexander V. Chernikov return (EINVAL); 622ac35ff17SAlexander V. Chernikov 623ac35ff17SAlexander V. Chernikov oh = (struct _ipfw_obj_header *)op3; 624ac35ff17SAlexander V. Chernikov objheader_to_ti(oh, &ti); 625ac35ff17SAlexander V. Chernikov 6261832a7b3SAlexander V. Chernikov if (op3->opcode == IP_FW_TABLE_XDESTROY) 627ac35ff17SAlexander V. Chernikov error = destroy_table(ch, &ti); 6281832a7b3SAlexander V. Chernikov else if (op3->opcode == IP_FW_TABLE_XFLUSH) 629ac35ff17SAlexander V. Chernikov error = flush_table(ch, &ti); 630ac35ff17SAlexander V. Chernikov else 631ac35ff17SAlexander V. Chernikov return (ENOTSUP); 632ac35ff17SAlexander V. Chernikov 633ac35ff17SAlexander V. Chernikov return (error); 6343b3a8eb9SGleb Smirnoff } 6353b3a8eb9SGleb Smirnoff 636b074b7bbSAlexander V. Chernikov /* 6379f7d47b0SAlexander V. Chernikov * Flushes all entries in given table. 638ac35ff17SAlexander V. Chernikov * Data layout (v0)(current): 639ac35ff17SAlexander V. Chernikov * Request: [ ip_fw3_opheader ] 640ac35ff17SAlexander V. Chernikov * 641ac35ff17SAlexander V. Chernikov * Returns 0 on success 642b074b7bbSAlexander V. Chernikov */ 6431832a7b3SAlexander V. Chernikov int 644ac35ff17SAlexander V. Chernikov flush_table(struct ip_fw_chain *ch, struct tid_info *ti) 6453b3a8eb9SGleb Smirnoff { 646b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 647b074b7bbSAlexander V. Chernikov struct table_config *tc; 6489f7d47b0SAlexander V. Chernikov struct table_algo *ta; 6499f7d47b0SAlexander V. Chernikov struct table_info ti_old, ti_new, *tablestate; 6509f7d47b0SAlexander V. Chernikov void *astate_old, *astate_new; 651daabb523SAlexander V. Chernikov char algostate[32], *pstate; 652b074b7bbSAlexander V. Chernikov int error; 653b074b7bbSAlexander V. Chernikov uint16_t kidx; 6543b3a8eb9SGleb Smirnoff 6553b3a8eb9SGleb Smirnoff /* 6569f7d47b0SAlexander V. Chernikov * Stage 1: save table algoritm. 657b074b7bbSAlexander V. Chernikov * Reference found table to ensure it won't disappear. 6583b3a8eb9SGleb Smirnoff */ 659b074b7bbSAlexander V. Chernikov IPFW_UH_WLOCK(ch); 660b074b7bbSAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 661b074b7bbSAlexander V. Chernikov if ((tc = find_table(ni, ti)) == NULL) { 662b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 663b074b7bbSAlexander V. Chernikov return (ESRCH); 664b074b7bbSAlexander V. Chernikov } 6659f7d47b0SAlexander V. Chernikov ta = tc->ta; 666b074b7bbSAlexander V. Chernikov tc->no.refcnt++; 667daabb523SAlexander V. Chernikov /* Save statup algo parameters */ 668daabb523SAlexander V. Chernikov if (ta->print_config != NULL) { 669daabb523SAlexander V. Chernikov ta->print_config(tc->astate, KIDX_TO_TI(ch, tc->no.kidx), 670daabb523SAlexander V. Chernikov algostate, sizeof(algostate)); 671daabb523SAlexander V. Chernikov pstate = algostate; 672daabb523SAlexander V. Chernikov } else 673daabb523SAlexander V. Chernikov pstate = NULL; 674b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 6753b3a8eb9SGleb Smirnoff 676b074b7bbSAlexander V. Chernikov /* 6779f7d47b0SAlexander V. Chernikov * Stage 2: allocate new table instance using same algo. 678b074b7bbSAlexander V. Chernikov */ 6799f7d47b0SAlexander V. Chernikov memset(&ti_new, 0, sizeof(struct table_info)); 680daabb523SAlexander V. Chernikov if ((error = ta->init(ch, &astate_new, &ti_new, pstate)) != 0) { 681b074b7bbSAlexander V. Chernikov IPFW_UH_WLOCK(ch); 682b074b7bbSAlexander V. Chernikov tc->no.refcnt--; 683b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 684b074b7bbSAlexander V. Chernikov return (error); 685b074b7bbSAlexander V. Chernikov } 686b074b7bbSAlexander V. Chernikov 687b074b7bbSAlexander V. Chernikov /* 688b074b7bbSAlexander V. Chernikov * Stage 3: swap old state pointers with newly-allocated ones. 689b074b7bbSAlexander V. Chernikov * Decrease refcount. 690b074b7bbSAlexander V. Chernikov */ 691b074b7bbSAlexander V. Chernikov IPFW_UH_WLOCK(ch); 692b074b7bbSAlexander V. Chernikov 693b074b7bbSAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 694b074b7bbSAlexander V. Chernikov kidx = tc->no.kidx; 6959f7d47b0SAlexander V. Chernikov tablestate = (struct table_info *)ch->tablestate; 696b074b7bbSAlexander V. Chernikov 6979f7d47b0SAlexander V. Chernikov IPFW_WLOCK(ch); 6989f7d47b0SAlexander V. Chernikov ti_old = tablestate[kidx]; 6999f7d47b0SAlexander V. Chernikov tablestate[kidx] = ti_new; 7009f7d47b0SAlexander V. Chernikov IPFW_WUNLOCK(ch); 701b074b7bbSAlexander V. Chernikov 7029f7d47b0SAlexander V. Chernikov astate_old = tc->astate; 7039f7d47b0SAlexander V. Chernikov tc->astate = astate_new; 7049f7d47b0SAlexander V. Chernikov tc->ti = ti_new; 7059f7d47b0SAlexander V. Chernikov tc->count = 0; 706b074b7bbSAlexander V. Chernikov tc->no.refcnt--; 707b074b7bbSAlexander V. Chernikov 708b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 7093b3a8eb9SGleb Smirnoff 710b074b7bbSAlexander V. Chernikov /* 711b074b7bbSAlexander V. Chernikov * Stage 4: perform real flush. 712b074b7bbSAlexander V. Chernikov */ 7139f7d47b0SAlexander V. Chernikov ta->destroy(astate_old, &ti_old); 7143b3a8eb9SGleb Smirnoff 7153b3a8eb9SGleb Smirnoff return (0); 7163b3a8eb9SGleb Smirnoff } 7173b3a8eb9SGleb Smirnoff 718b074b7bbSAlexander V. Chernikov /* 7199f7d47b0SAlexander V. Chernikov * Destroys table specified by @ti. 720ac35ff17SAlexander V. Chernikov * Data layout (v0)(current): 721ac35ff17SAlexander V. Chernikov * Request: [ ip_fw3_opheader ] 722ac35ff17SAlexander V. Chernikov * 723ac35ff17SAlexander V. Chernikov * Returns 0 on success 724b074b7bbSAlexander V. Chernikov */ 725ac35ff17SAlexander V. Chernikov static int 726ac35ff17SAlexander V. Chernikov destroy_table(struct ip_fw_chain *ch, struct tid_info *ti) 727b074b7bbSAlexander V. Chernikov { 728b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 729b074b7bbSAlexander V. Chernikov struct table_config *tc; 730b074b7bbSAlexander V. Chernikov 731b074b7bbSAlexander V. Chernikov IPFW_UH_WLOCK(ch); 732b074b7bbSAlexander V. Chernikov 733b074b7bbSAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 734b074b7bbSAlexander V. Chernikov if ((tc = find_table(ni, ti)) == NULL) { 735b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 736b074b7bbSAlexander V. Chernikov return (ESRCH); 737b074b7bbSAlexander V. Chernikov } 738b074b7bbSAlexander V. Chernikov 7399f7d47b0SAlexander V. Chernikov /* Do not permit destroying referenced tables */ 7409f7d47b0SAlexander V. Chernikov if (tc->no.refcnt > 0) { 741b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 742b074b7bbSAlexander V. Chernikov return (EBUSY); 743b074b7bbSAlexander V. Chernikov } 744b074b7bbSAlexander V. Chernikov 745b074b7bbSAlexander V. Chernikov IPFW_WLOCK(ch); 746b074b7bbSAlexander V. Chernikov unlink_table(ch, tc); 747b074b7bbSAlexander V. Chernikov IPFW_WUNLOCK(ch); 748b074b7bbSAlexander V. Chernikov 749b074b7bbSAlexander V. Chernikov /* Free obj index */ 750ac35ff17SAlexander V. Chernikov if (ipfw_objhash_free_idx(ni, tc->no.kidx) != 0) 751b074b7bbSAlexander V. Chernikov printf("Error unlinking kidx %d from table %s\n", 752b074b7bbSAlexander V. Chernikov tc->no.kidx, tc->tablename); 753b074b7bbSAlexander V. Chernikov 754b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 755b074b7bbSAlexander V. Chernikov 756b074b7bbSAlexander V. Chernikov free_table_config(ni, tc); 757b074b7bbSAlexander V. Chernikov 758b074b7bbSAlexander V. Chernikov return (0); 759b074b7bbSAlexander V. Chernikov } 760b074b7bbSAlexander V. Chernikov 761b074b7bbSAlexander V. Chernikov static void 762b074b7bbSAlexander V. Chernikov destroy_table_locked(struct namedobj_instance *ni, struct named_object *no, 763b074b7bbSAlexander V. Chernikov void *arg) 764b074b7bbSAlexander V. Chernikov { 765b074b7bbSAlexander V. Chernikov 766b074b7bbSAlexander V. Chernikov unlink_table((struct ip_fw_chain *)arg, (struct table_config *)no); 767ac35ff17SAlexander V. Chernikov if (ipfw_objhash_free_idx(ni, no->kidx) != 0) 768b074b7bbSAlexander V. Chernikov printf("Error unlinking kidx %d from table %s\n", 769b074b7bbSAlexander V. Chernikov no->kidx, no->name); 770b074b7bbSAlexander V. Chernikov free_table_config(ni, (struct table_config *)no); 771b074b7bbSAlexander V. Chernikov } 772b074b7bbSAlexander V. Chernikov 7733b3a8eb9SGleb Smirnoff void 7743b3a8eb9SGleb Smirnoff ipfw_destroy_tables(struct ip_fw_chain *ch) 7753b3a8eb9SGleb Smirnoff { 7763b3a8eb9SGleb Smirnoff 777b074b7bbSAlexander V. Chernikov /* Remove all tables from working set */ 778b074b7bbSAlexander V. Chernikov IPFW_UH_WLOCK(ch); 779b074b7bbSAlexander V. Chernikov IPFW_WLOCK(ch); 780b074b7bbSAlexander V. Chernikov ipfw_objhash_foreach(CHAIN_TO_NI(ch), destroy_table_locked, ch); 781b074b7bbSAlexander V. Chernikov IPFW_WUNLOCK(ch); 782b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 7833b3a8eb9SGleb Smirnoff 7843b3a8eb9SGleb Smirnoff /* Free pointers itself */ 7859f7d47b0SAlexander V. Chernikov free(ch->tablestate, M_IPFW); 7869f7d47b0SAlexander V. Chernikov 7879f7d47b0SAlexander V. Chernikov ipfw_table_algo_destroy(ch); 788b074b7bbSAlexander V. Chernikov 789b074b7bbSAlexander V. Chernikov ipfw_objhash_destroy(CHAIN_TO_NI(ch)); 790b074b7bbSAlexander V. Chernikov free(CHAIN_TO_TCFG(ch), M_IPFW); 7913b3a8eb9SGleb Smirnoff } 7923b3a8eb9SGleb Smirnoff 7933b3a8eb9SGleb Smirnoff int 7943b3a8eb9SGleb Smirnoff ipfw_init_tables(struct ip_fw_chain *ch) 7953b3a8eb9SGleb Smirnoff { 796b074b7bbSAlexander V. Chernikov struct tables_config *tcfg; 797b074b7bbSAlexander V. Chernikov 7983b3a8eb9SGleb Smirnoff /* Allocate pointers */ 7999f7d47b0SAlexander V. Chernikov ch->tablestate = malloc(V_fw_tables_max * sizeof(struct table_info), 8009f7d47b0SAlexander V. Chernikov M_IPFW, M_WAITOK | M_ZERO); 801b074b7bbSAlexander V. Chernikov 802b074b7bbSAlexander V. Chernikov tcfg = malloc(sizeof(struct tables_config), M_IPFW, M_WAITOK | M_ZERO); 803b074b7bbSAlexander V. Chernikov tcfg->namehash = ipfw_objhash_create(V_fw_tables_max); 804b074b7bbSAlexander V. Chernikov ch->tblcfg = tcfg; 805b074b7bbSAlexander V. Chernikov 8069f7d47b0SAlexander V. Chernikov ipfw_table_algo_init(ch); 8079f7d47b0SAlexander V. Chernikov 8083b3a8eb9SGleb Smirnoff return (0); 8093b3a8eb9SGleb Smirnoff } 8103b3a8eb9SGleb Smirnoff 8113b3a8eb9SGleb Smirnoff int 8123b3a8eb9SGleb Smirnoff ipfw_resize_tables(struct ip_fw_chain *ch, unsigned int ntables) 8133b3a8eb9SGleb Smirnoff { 8143b3a8eb9SGleb Smirnoff unsigned int ntables_old, tbl; 815b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 8169f7d47b0SAlexander V. Chernikov void *new_idx, *old_tablestate, *tablestate; 81768394ec8SAlexander V. Chernikov struct table_info *ti; 81868394ec8SAlexander V. Chernikov struct table_config *tc; 81968394ec8SAlexander V. Chernikov int i, new_blocks; 8203b3a8eb9SGleb Smirnoff 8213b3a8eb9SGleb Smirnoff /* Check new value for validity */ 8223b3a8eb9SGleb Smirnoff if (ntables > IPFW_TABLES_MAX) 8233b3a8eb9SGleb Smirnoff ntables = IPFW_TABLES_MAX; 8243b3a8eb9SGleb Smirnoff 8253b3a8eb9SGleb Smirnoff /* Allocate new pointers */ 8269f7d47b0SAlexander V. Chernikov tablestate = malloc(ntables * sizeof(struct table_info), 8279f7d47b0SAlexander V. Chernikov M_IPFW, M_WAITOK | M_ZERO); 8289f7d47b0SAlexander V. Chernikov 829b074b7bbSAlexander V. Chernikov ipfw_objhash_bitmap_alloc(ntables, (void *)&new_idx, &new_blocks); 8303b3a8eb9SGleb Smirnoff 8319f7d47b0SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 8323b3a8eb9SGleb Smirnoff 8333b3a8eb9SGleb Smirnoff tbl = (ntables >= V_fw_tables_max) ? V_fw_tables_max : ntables; 834b074b7bbSAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 835b074b7bbSAlexander V. Chernikov 8369f7d47b0SAlexander V. Chernikov /* Temporary restrict decreasing max_tables */ 8379f7d47b0SAlexander V. Chernikov if (ntables < V_fw_tables_max) { 8389f7d47b0SAlexander V. Chernikov 8399f7d47b0SAlexander V. Chernikov /* 8409f7d47b0SAlexander V. Chernikov * FIXME: Check if we really can shrink 8419f7d47b0SAlexander V. Chernikov */ 8429f7d47b0SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 843b074b7bbSAlexander V. Chernikov return (EINVAL); 844b074b7bbSAlexander V. Chernikov } 8453b3a8eb9SGleb Smirnoff 8469f7d47b0SAlexander V. Chernikov /* Copy table info/indices */ 8479f7d47b0SAlexander V. Chernikov memcpy(tablestate, ch->tablestate, sizeof(struct table_info) * tbl); 8489f7d47b0SAlexander V. Chernikov ipfw_objhash_bitmap_merge(ni, &new_idx, &new_blocks); 8493b3a8eb9SGleb Smirnoff 8509f7d47b0SAlexander V. Chernikov IPFW_WLOCK(ch); 8519f7d47b0SAlexander V. Chernikov 8529f7d47b0SAlexander V. Chernikov /* Change pointers */ 8539f7d47b0SAlexander V. Chernikov old_tablestate = ch->tablestate; 8549f7d47b0SAlexander V. Chernikov ch->tablestate = tablestate; 8559f7d47b0SAlexander V. Chernikov ipfw_objhash_bitmap_swap(ni, &new_idx, &new_blocks); 8563b3a8eb9SGleb Smirnoff 8573b3a8eb9SGleb Smirnoff ntables_old = V_fw_tables_max; 8583b3a8eb9SGleb Smirnoff V_fw_tables_max = ntables; 8593b3a8eb9SGleb Smirnoff 8603b3a8eb9SGleb Smirnoff IPFW_WUNLOCK(ch); 86168394ec8SAlexander V. Chernikov 86268394ec8SAlexander V. Chernikov /* Notify all consumers that their @ti pointer has changed */ 86368394ec8SAlexander V. Chernikov ti = (struct table_info *)ch->tablestate; 86468394ec8SAlexander V. Chernikov for (i = 0; i < tbl; i++, ti++) { 86568394ec8SAlexander V. Chernikov if (ti->lookup == NULL) 86668394ec8SAlexander V. Chernikov continue; 86768394ec8SAlexander V. Chernikov tc = (struct table_config *)ipfw_objhash_lookup_kidx(ni, i); 86868394ec8SAlexander V. Chernikov if (tc == NULL || tc->ta->change_ti == NULL) 86968394ec8SAlexander V. Chernikov continue; 87068394ec8SAlexander V. Chernikov 87168394ec8SAlexander V. Chernikov tc->ta->change_ti(tc->astate, ti); 87268394ec8SAlexander V. Chernikov } 87368394ec8SAlexander V. Chernikov 8749f7d47b0SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 8753b3a8eb9SGleb Smirnoff 8763b3a8eb9SGleb Smirnoff /* Free old pointers */ 8779f7d47b0SAlexander V. Chernikov free(old_tablestate, M_IPFW); 878b074b7bbSAlexander V. Chernikov ipfw_objhash_bitmap_free(new_idx, new_blocks); 8793b3a8eb9SGleb Smirnoff 8803b3a8eb9SGleb Smirnoff return (0); 8813b3a8eb9SGleb Smirnoff } 8823b3a8eb9SGleb Smirnoff 8833b3a8eb9SGleb Smirnoff int 8843b3a8eb9SGleb Smirnoff ipfw_lookup_table(struct ip_fw_chain *ch, uint16_t tbl, in_addr_t addr, 8853b3a8eb9SGleb Smirnoff uint32_t *val) 8863b3a8eb9SGleb Smirnoff { 8879f7d47b0SAlexander V. Chernikov struct table_info *ti; 8883b3a8eb9SGleb Smirnoff 8899f7d47b0SAlexander V. Chernikov ti = &(((struct table_info *)ch->tablestate)[tbl]); 8909f7d47b0SAlexander V. Chernikov 8919f7d47b0SAlexander V. Chernikov return (ti->lookup(ti, &addr, sizeof(in_addr_t), val)); 8923b3a8eb9SGleb Smirnoff } 8939f7d47b0SAlexander V. Chernikov 8949f7d47b0SAlexander V. Chernikov int 8959f7d47b0SAlexander V. Chernikov ipfw_lookup_table_extended(struct ip_fw_chain *ch, uint16_t tbl, uint16_t plen, 8969f7d47b0SAlexander V. Chernikov void *paddr, uint32_t *val) 8979f7d47b0SAlexander V. Chernikov { 8989f7d47b0SAlexander V. Chernikov struct table_info *ti; 8999f7d47b0SAlexander V. Chernikov 9009f7d47b0SAlexander V. Chernikov ti = &(((struct table_info *)ch->tablestate)[tbl]); 9019f7d47b0SAlexander V. Chernikov 9029f7d47b0SAlexander V. Chernikov return (ti->lookup(ti, paddr, plen, val)); 9039f7d47b0SAlexander V. Chernikov } 9049f7d47b0SAlexander V. Chernikov 9059f7d47b0SAlexander V. Chernikov /* 9069f7d47b0SAlexander V. Chernikov * Info/List/dump support for tables. 9079f7d47b0SAlexander V. Chernikov * 9089f7d47b0SAlexander V. Chernikov */ 9099f7d47b0SAlexander V. Chernikov 910f1220db8SAlexander V. Chernikov /* 911d3a4f924SAlexander V. Chernikov * High-level 'get' cmds sysctl handlers 912d3a4f924SAlexander V. Chernikov */ 913d3a4f924SAlexander V. Chernikov 914d3a4f924SAlexander V. Chernikov /* 915d3a4f924SAlexander V. Chernikov * Get buffer size needed to list info for all tables. 916ac35ff17SAlexander V. Chernikov * Data layout (v0)(current): 917d3a4f924SAlexander V. Chernikov * Request: [ empty ], size = sizeof(ipfw_obj_lheader) 918d3a4f924SAlexander V. Chernikov * Reply: [ ipfw_obj_lheader ] 919d3a4f924SAlexander V. Chernikov * 920d3a4f924SAlexander V. Chernikov * Returns 0 on success 921f1220db8SAlexander V. Chernikov */ 922f1220db8SAlexander V. Chernikov int 9232d99a349SAlexander V. Chernikov ipfw_listsize_tables(struct ip_fw_chain *ch, struct sockopt_data *sd) 924f1220db8SAlexander V. Chernikov { 925f1220db8SAlexander V. Chernikov struct _ipfw_obj_lheader *olh; 926f1220db8SAlexander V. Chernikov 9272d99a349SAlexander V. Chernikov olh = (struct _ipfw_obj_lheader *)ipfw_get_sopt_header(sd,sizeof(*olh)); 9282d99a349SAlexander V. Chernikov if (olh == NULL) 929d3a4f924SAlexander V. Chernikov return (EINVAL); 930d3a4f924SAlexander V. Chernikov 931f1220db8SAlexander V. Chernikov olh->size = sizeof(*olh); /* Make export_table store needed size */ 932f1220db8SAlexander V. Chernikov 933f1220db8SAlexander V. Chernikov IPFW_UH_RLOCK(ch); 9342d99a349SAlexander V. Chernikov export_tables(ch, olh, sd); 935f1220db8SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 936f1220db8SAlexander V. Chernikov 9372d99a349SAlexander V. Chernikov return (0); 938f1220db8SAlexander V. Chernikov } 939f1220db8SAlexander V. Chernikov 940d3a4f924SAlexander V. Chernikov /* 941d3a4f924SAlexander V. Chernikov * Lists all tables currently available in kernel. 942ac35ff17SAlexander V. Chernikov * Data layout (v0)(current): 943d3a4f924SAlexander V. Chernikov * Request: [ ipfw_obj_lheader ], size = ipfw_obj_lheader.size 944d3a4f924SAlexander V. Chernikov * Reply: [ ipfw_obj_lheader ipfw_xtable_info x N ] 945d3a4f924SAlexander V. Chernikov * 946d3a4f924SAlexander V. Chernikov * Returns 0 on success 947d3a4f924SAlexander V. Chernikov */ 948f1220db8SAlexander V. Chernikov int 9492d99a349SAlexander V. Chernikov ipfw_list_tables(struct ip_fw_chain *ch, struct sockopt_data *sd) 950f1220db8SAlexander V. Chernikov { 951f1220db8SAlexander V. Chernikov struct _ipfw_obj_lheader *olh; 952f1220db8SAlexander V. Chernikov int error; 953f1220db8SAlexander V. Chernikov 9542d99a349SAlexander V. Chernikov olh = (struct _ipfw_obj_lheader *)ipfw_get_sopt_header(sd,sizeof(*olh)); 9552d99a349SAlexander V. Chernikov if (olh == NULL) 956d3a4f924SAlexander V. Chernikov return (EINVAL); 95768394ec8SAlexander V. Chernikov if (sd->valsize < olh->size) 95868394ec8SAlexander V. Chernikov return (EINVAL); 959d3a4f924SAlexander V. Chernikov 960f1220db8SAlexander V. Chernikov IPFW_UH_RLOCK(ch); 9612d99a349SAlexander V. Chernikov error = export_tables(ch, olh, sd); 962f1220db8SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 963f1220db8SAlexander V. Chernikov 964f1220db8SAlexander V. Chernikov return (error); 965f1220db8SAlexander V. Chernikov } 966f1220db8SAlexander V. Chernikov 967f1220db8SAlexander V. Chernikov /* 9682d99a349SAlexander V. Chernikov * Store table info to buffer provided by @sd. 969ac35ff17SAlexander V. Chernikov * Data layout (v0)(current): 970d3a4f924SAlexander V. Chernikov * Request: [ ipfw_obj_header ipfw_xtable_info(empty)] 971d3a4f924SAlexander V. Chernikov * Reply: [ ipfw_obj_header ipfw_xtable_info ] 972d3a4f924SAlexander V. Chernikov * 973d3a4f924SAlexander V. Chernikov * Returns 0 on success. 974d3a4f924SAlexander V. Chernikov */ 975d3a4f924SAlexander V. Chernikov int 9762d99a349SAlexander V. Chernikov ipfw_describe_table(struct ip_fw_chain *ch, struct sockopt_data *sd) 977d3a4f924SAlexander V. Chernikov { 978d3a4f924SAlexander V. Chernikov struct _ipfw_obj_header *oh; 979d3a4f924SAlexander V. Chernikov struct table_config *tc; 980d3a4f924SAlexander V. Chernikov struct tid_info ti; 981d3a4f924SAlexander V. Chernikov size_t sz; 982d3a4f924SAlexander V. Chernikov 983d3a4f924SAlexander V. Chernikov sz = sizeof(*oh) + sizeof(ipfw_xtable_info); 9842d99a349SAlexander V. Chernikov oh = (struct _ipfw_obj_header *)ipfw_get_sopt_header(sd, sz); 9852d99a349SAlexander V. Chernikov if (oh == NULL) 986d3a4f924SAlexander V. Chernikov return (EINVAL); 987d3a4f924SAlexander V. Chernikov 988d3a4f924SAlexander V. Chernikov objheader_to_ti(oh, &ti); 989d3a4f924SAlexander V. Chernikov 990d3a4f924SAlexander V. Chernikov IPFW_UH_RLOCK(ch); 991d3a4f924SAlexander V. Chernikov if ((tc = find_table(CHAIN_TO_NI(ch), &ti)) == NULL) { 992d3a4f924SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 993d3a4f924SAlexander V. Chernikov return (ESRCH); 994d3a4f924SAlexander V. Chernikov } 995d3a4f924SAlexander V. Chernikov 996ac35ff17SAlexander V. Chernikov export_table_info(ch, tc, (ipfw_xtable_info *)(oh + 1)); 997d3a4f924SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 998d3a4f924SAlexander V. Chernikov 9992d99a349SAlexander V. Chernikov return (0); 1000d3a4f924SAlexander V. Chernikov } 1001d3a4f924SAlexander V. Chernikov 1002f1220db8SAlexander V. Chernikov struct dump_args { 1003f1220db8SAlexander V. Chernikov struct table_info *ti; 1004f1220db8SAlexander V. Chernikov struct table_config *tc; 10052d99a349SAlexander V. Chernikov struct sockopt_data *sd; 1006f1220db8SAlexander V. Chernikov uint32_t cnt; 1007f1220db8SAlexander V. Chernikov uint16_t uidx; 100881d3153dSAlexander V. Chernikov int error; 10092d99a349SAlexander V. Chernikov ipfw_table_entry *ent; 10102d99a349SAlexander V. Chernikov uint32_t size; 101181d3153dSAlexander V. Chernikov ipfw_obj_tentry tent; 1012f1220db8SAlexander V. Chernikov }; 1013f1220db8SAlexander V. Chernikov 1014f1220db8SAlexander V. Chernikov int 10152d99a349SAlexander V. Chernikov ipfw_dump_table(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 10162d99a349SAlexander V. Chernikov struct sockopt_data *sd) 1017f1220db8SAlexander V. Chernikov { 1018d3a4f924SAlexander V. Chernikov int error; 1019d3a4f924SAlexander V. Chernikov 1020d3a4f924SAlexander V. Chernikov switch (op3->version) { 1021d3a4f924SAlexander V. Chernikov case 0: 10222d99a349SAlexander V. Chernikov error = ipfw_dump_table_v0(ch, sd); 1023d3a4f924SAlexander V. Chernikov break; 1024d3a4f924SAlexander V. Chernikov case 1: 10252d99a349SAlexander V. Chernikov error = ipfw_dump_table_v1(ch, sd); 1026d3a4f924SAlexander V. Chernikov break; 1027d3a4f924SAlexander V. Chernikov default: 1028d3a4f924SAlexander V. Chernikov error = ENOTSUP; 1029d3a4f924SAlexander V. Chernikov } 1030d3a4f924SAlexander V. Chernikov 1031d3a4f924SAlexander V. Chernikov return (error); 1032d3a4f924SAlexander V. Chernikov } 1033d3a4f924SAlexander V. Chernikov 1034d3a4f924SAlexander V. Chernikov /* 1035d3a4f924SAlexander V. Chernikov * Dumps all table data 1036ac35ff17SAlexander V. Chernikov * Data layout (v1)(current): 10372d99a349SAlexander V. Chernikov * Request: [ ipfw_obj_header ], size = ipfw_xtable_info.size 103881d3153dSAlexander V. Chernikov * Reply: [ ipfw_obj_header ipfw_xtable_info ipfw_obj_tentry x N ] 1039d3a4f924SAlexander V. Chernikov * 1040d3a4f924SAlexander V. Chernikov * Returns 0 on success 1041d3a4f924SAlexander V. Chernikov */ 1042d3a4f924SAlexander V. Chernikov static int 10432d99a349SAlexander V. Chernikov ipfw_dump_table_v1(struct ip_fw_chain *ch, struct sockopt_data *sd) 1044d3a4f924SAlexander V. Chernikov { 1045f1220db8SAlexander V. Chernikov struct _ipfw_obj_header *oh; 1046f1220db8SAlexander V. Chernikov ipfw_xtable_info *i; 1047f1220db8SAlexander V. Chernikov struct tid_info ti; 1048f1220db8SAlexander V. Chernikov struct table_config *tc; 1049f1220db8SAlexander V. Chernikov struct table_algo *ta; 1050f1220db8SAlexander V. Chernikov struct dump_args da; 1051d3a4f924SAlexander V. Chernikov uint32_t sz; 1052f1220db8SAlexander V. Chernikov 10532d99a349SAlexander V. Chernikov sz = sizeof(ipfw_obj_header) + sizeof(ipfw_xtable_info); 10542d99a349SAlexander V. Chernikov oh = (struct _ipfw_obj_header *)ipfw_get_sopt_header(sd, sz); 10552d99a349SAlexander V. Chernikov if (oh == NULL) 1056d3a4f924SAlexander V. Chernikov return (EINVAL); 1057d3a4f924SAlexander V. Chernikov 10582d99a349SAlexander V. Chernikov i = (ipfw_xtable_info *)(oh + 1); 1059d3a4f924SAlexander V. Chernikov objheader_to_ti(oh, &ti); 1060f1220db8SAlexander V. Chernikov 1061f1220db8SAlexander V. Chernikov IPFW_UH_RLOCK(ch); 1062f1220db8SAlexander V. Chernikov if ((tc = find_table(CHAIN_TO_NI(ch), &ti)) == NULL) { 1063f1220db8SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 1064f1220db8SAlexander V. Chernikov return (ESRCH); 1065f1220db8SAlexander V. Chernikov } 1066ac35ff17SAlexander V. Chernikov export_table_info(ch, tc, i); 10672d99a349SAlexander V. Chernikov sz = tc->count; 10682d99a349SAlexander V. Chernikov 106981d3153dSAlexander V. Chernikov if (sd->valsize < sz + tc->count * sizeof(ipfw_obj_tentry)) { 10702d99a349SAlexander V. Chernikov 10712d99a349SAlexander V. Chernikov /* 10722d99a349SAlexander V. Chernikov * Submitted buffer size is not enough. 10732d99a349SAlexander V. Chernikov * WE've already filled in @i structure with 10742d99a349SAlexander V. Chernikov * relevant table info including size, so we 10752d99a349SAlexander V. Chernikov * can return. Buffer will be flushed automatically. 10762d99a349SAlexander V. Chernikov */ 1077f1220db8SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 10782d99a349SAlexander V. Chernikov return (ENOMEM); 1079f1220db8SAlexander V. Chernikov } 1080f1220db8SAlexander V. Chernikov 1081f1220db8SAlexander V. Chernikov /* 1082f1220db8SAlexander V. Chernikov * Do the actual dump in eXtended format 1083f1220db8SAlexander V. Chernikov */ 1084d3a4f924SAlexander V. Chernikov memset(&da, 0, sizeof(da)); 1085f1220db8SAlexander V. Chernikov da.ti = KIDX_TO_TI(ch, tc->no.kidx); 1086f1220db8SAlexander V. Chernikov da.tc = tc; 10872d99a349SAlexander V. Chernikov da.sd = sd; 1088f1220db8SAlexander V. Chernikov 1089f1220db8SAlexander V. Chernikov ta = tc->ta; 1090f1220db8SAlexander V. Chernikov 109181d3153dSAlexander V. Chernikov ta->foreach(tc->astate, da.ti, dump_table_tentry, &da); 1092f1220db8SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 1093f1220db8SAlexander V. Chernikov 109481d3153dSAlexander V. Chernikov return (da.error); 1095f1220db8SAlexander V. Chernikov } 1096f1220db8SAlexander V. Chernikov 1097d3a4f924SAlexander V. Chernikov /* 1098d3a4f924SAlexander V. Chernikov * Dumps all table data 10992d99a349SAlexander V. Chernikov * Data layout (version 0)(legacy): 1100d3a4f924SAlexander V. Chernikov * Request: [ ipfw_xtable ], size = IP_FW_TABLE_XGETSIZE() 1101d3a4f924SAlexander V. Chernikov * Reply: [ ipfw_xtable ipfw_table_xentry x N ] 1102d3a4f924SAlexander V. Chernikov * 1103d3a4f924SAlexander V. Chernikov * Returns 0 on success 1104d3a4f924SAlexander V. Chernikov */ 1105d3a4f924SAlexander V. Chernikov static int 11062d99a349SAlexander V. Chernikov ipfw_dump_table_v0(struct ip_fw_chain *ch, struct sockopt_data *sd) 1107d3a4f924SAlexander V. Chernikov { 1108d3a4f924SAlexander V. Chernikov ipfw_xtable *xtbl; 1109d3a4f924SAlexander V. Chernikov struct tid_info ti; 1110d3a4f924SAlexander V. Chernikov struct table_config *tc; 1111d3a4f924SAlexander V. Chernikov struct table_algo *ta; 1112d3a4f924SAlexander V. Chernikov struct dump_args da; 1113d3a4f924SAlexander V. Chernikov size_t sz; 1114d3a4f924SAlexander V. Chernikov 11152d99a349SAlexander V. Chernikov xtbl = (ipfw_xtable *)ipfw_get_sopt_header(sd, sizeof(ipfw_xtable)); 11162d99a349SAlexander V. Chernikov if (xtbl == NULL) 1117d3a4f924SAlexander V. Chernikov return (EINVAL); 1118d3a4f924SAlexander V. Chernikov 1119d3a4f924SAlexander V. Chernikov memset(&ti, 0, sizeof(ti)); 1120d3a4f924SAlexander V. Chernikov ti.uidx = xtbl->tbl; 1121d3a4f924SAlexander V. Chernikov 1122d3a4f924SAlexander V. Chernikov IPFW_UH_RLOCK(ch); 1123d3a4f924SAlexander V. Chernikov if ((tc = find_table(CHAIN_TO_NI(ch), &ti)) == NULL) { 1124d3a4f924SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 1125d3a4f924SAlexander V. Chernikov return (0); 1126d3a4f924SAlexander V. Chernikov } 1127d3a4f924SAlexander V. Chernikov sz = tc->count * sizeof(ipfw_table_xentry) + sizeof(ipfw_xtable); 11282d99a349SAlexander V. Chernikov 11292d99a349SAlexander V. Chernikov xtbl->cnt = tc->count; 11302d99a349SAlexander V. Chernikov xtbl->size = sz; 11312d99a349SAlexander V. Chernikov xtbl->type = tc->no.type; 11322d99a349SAlexander V. Chernikov xtbl->tbl = ti.uidx; 11332d99a349SAlexander V. Chernikov 11342d99a349SAlexander V. Chernikov if (sd->valsize < sz) { 11352d99a349SAlexander V. Chernikov 11362d99a349SAlexander V. Chernikov /* 11372d99a349SAlexander V. Chernikov * Submitted buffer size is not enough. 11382d99a349SAlexander V. Chernikov * WE've already filled in @i structure with 11392d99a349SAlexander V. Chernikov * relevant table info including size, so we 11402d99a349SAlexander V. Chernikov * can return. Buffer will be flushed automatically. 11412d99a349SAlexander V. Chernikov */ 1142d3a4f924SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 11432d99a349SAlexander V. Chernikov return (ENOMEM); 1144d3a4f924SAlexander V. Chernikov } 1145d3a4f924SAlexander V. Chernikov 1146d3a4f924SAlexander V. Chernikov /* Do the actual dump in eXtended format */ 1147d3a4f924SAlexander V. Chernikov memset(&da, 0, sizeof(da)); 1148d3a4f924SAlexander V. Chernikov da.ti = KIDX_TO_TI(ch, tc->no.kidx); 1149d3a4f924SAlexander V. Chernikov da.tc = tc; 11502d99a349SAlexander V. Chernikov da.sd = sd; 11512d99a349SAlexander V. Chernikov 1152d3a4f924SAlexander V. Chernikov ta = tc->ta; 1153d3a4f924SAlexander V. Chernikov 1154d3a4f924SAlexander V. Chernikov ta->foreach(tc->astate, da.ti, dump_table_xentry, &da); 1155d3a4f924SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 1156d3a4f924SAlexander V. Chernikov 11572d99a349SAlexander V. Chernikov return (0); 1158d3a4f924SAlexander V. Chernikov } 1159d3a4f924SAlexander V. Chernikov 1160d3a4f924SAlexander V. Chernikov /* 11619490a627SAlexander V. Chernikov * Creates new table. 1162ac35ff17SAlexander V. Chernikov * Data layout (v0)(current): 11639490a627SAlexander V. Chernikov * Request: [ ipfw_obj_header ipfw_xtable_info ] 11649490a627SAlexander V. Chernikov * 11659490a627SAlexander V. Chernikov * Returns 0 on success 11669490a627SAlexander V. Chernikov */ 11679490a627SAlexander V. Chernikov int 1168ac35ff17SAlexander V. Chernikov ipfw_create_table(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 1169ac35ff17SAlexander V. Chernikov struct sockopt_data *sd) 11709490a627SAlexander V. Chernikov { 11719490a627SAlexander V. Chernikov struct _ipfw_obj_header *oh; 11729490a627SAlexander V. Chernikov ipfw_xtable_info *i; 11739490a627SAlexander V. Chernikov char *tname, *aname; 11749490a627SAlexander V. Chernikov struct tid_info ti; 11759490a627SAlexander V. Chernikov struct namedobj_instance *ni; 11769490a627SAlexander V. Chernikov struct table_config *tc; 11779490a627SAlexander V. Chernikov 1178ac35ff17SAlexander V. Chernikov if (sd->valsize != sizeof(*oh) + sizeof(ipfw_xtable_info)) 11799490a627SAlexander V. Chernikov return (EINVAL); 11809490a627SAlexander V. Chernikov 1181ac35ff17SAlexander V. Chernikov oh = (struct _ipfw_obj_header *)sd->kbuf; 11829490a627SAlexander V. Chernikov i = (ipfw_xtable_info *)(oh + 1); 11839490a627SAlexander V. Chernikov 11849490a627SAlexander V. Chernikov /* 11859490a627SAlexander V. Chernikov * Verify user-supplied strings. 11862d99a349SAlexander V. Chernikov * Check for null-terminated/zero-length strings/ 11879490a627SAlexander V. Chernikov */ 1188ac35ff17SAlexander V. Chernikov tname = oh->ntlv.name; 11899490a627SAlexander V. Chernikov aname = i->algoname; 1190ac35ff17SAlexander V. Chernikov if (ipfw_check_table_name(tname) != 0 || 11919490a627SAlexander V. Chernikov strnlen(aname, sizeof(i->algoname)) == sizeof(i->algoname)) 11929490a627SAlexander V. Chernikov return (EINVAL); 11939490a627SAlexander V. Chernikov 11949490a627SAlexander V. Chernikov if (aname[0] == '\0') { 11959490a627SAlexander V. Chernikov /* Use default algorithm */ 11969490a627SAlexander V. Chernikov aname = NULL; 11979490a627SAlexander V. Chernikov } 11989490a627SAlexander V. Chernikov 11999490a627SAlexander V. Chernikov objheader_to_ti(oh, &ti); 1200ac35ff17SAlexander V. Chernikov ti.type = i->type; 12019490a627SAlexander V. Chernikov 12029490a627SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 12039490a627SAlexander V. Chernikov 12049490a627SAlexander V. Chernikov IPFW_UH_RLOCK(ch); 12059490a627SAlexander V. Chernikov if ((tc = find_table(ni, &ti)) != NULL) { 12069490a627SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 12079490a627SAlexander V. Chernikov return (EEXIST); 12089490a627SAlexander V. Chernikov } 12099490a627SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 12109490a627SAlexander V. Chernikov 1211db785d31SAlexander V. Chernikov return (create_table_internal(ch, &ti, aname, i->vtype)); 1212db785d31SAlexander V. Chernikov } 1213db785d31SAlexander V. Chernikov 1214db785d31SAlexander V. Chernikov /* 1215db785d31SAlexander V. Chernikov * Creates new table based on @ti and @aname. 1216db785d31SAlexander V. Chernikov * 1217db785d31SAlexander V. Chernikov * Relies on table name checking inside find_name_tlv() 1218db785d31SAlexander V. Chernikov * Assume @aname to be checked and valid. 1219db785d31SAlexander V. Chernikov * 1220db785d31SAlexander V. Chernikov * Returns 0 on success. 1221db785d31SAlexander V. Chernikov */ 1222db785d31SAlexander V. Chernikov static int 1223db785d31SAlexander V. Chernikov create_table_internal(struct ip_fw_chain *ch, struct tid_info *ti, 1224db785d31SAlexander V. Chernikov char *aname, uint8_t vtype) 1225db785d31SAlexander V. Chernikov { 1226db785d31SAlexander V. Chernikov struct namedobj_instance *ni; 1227db785d31SAlexander V. Chernikov struct table_config *tc; 1228db785d31SAlexander V. Chernikov struct table_algo *ta; 1229db785d31SAlexander V. Chernikov uint16_t kidx; 1230db785d31SAlexander V. Chernikov 1231db785d31SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 1232db785d31SAlexander V. Chernikov 1233db785d31SAlexander V. Chernikov ta = find_table_algo(CHAIN_TO_TCFG(ch), ti, aname); 12349490a627SAlexander V. Chernikov if (ta == NULL) 12359490a627SAlexander V. Chernikov return (ENOTSUP); 12369490a627SAlexander V. Chernikov 123768394ec8SAlexander V. Chernikov if ((tc = alloc_table_config(ch, ti, ta, aname, vtype)) == NULL) 12389490a627SAlexander V. Chernikov return (ENOMEM); 12399490a627SAlexander V. Chernikov 12409490a627SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 1241db785d31SAlexander V. Chernikov 1242db785d31SAlexander V. Chernikov /* Check if table has been already created */ 1243db785d31SAlexander V. Chernikov if (find_table(ni, ti) != NULL) { 1244db785d31SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1245db785d31SAlexander V. Chernikov free_table_config(ni, tc); 1246db785d31SAlexander V. Chernikov return (EEXIST); 1247db785d31SAlexander V. Chernikov } 1248db785d31SAlexander V. Chernikov 1249ac35ff17SAlexander V. Chernikov if (ipfw_objhash_alloc_idx(ni, &kidx) != 0) { 12509490a627SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1251db785d31SAlexander V. Chernikov printf("Unable to allocate table index." 1252db785d31SAlexander V. Chernikov " Consider increasing net.inet.ip.fw.tables_max"); 12539490a627SAlexander V. Chernikov free_table_config(ni, tc); 12549490a627SAlexander V. Chernikov return (EBUSY); 12559490a627SAlexander V. Chernikov } 12569490a627SAlexander V. Chernikov 12579490a627SAlexander V. Chernikov tc->no.kidx = kidx; 12589490a627SAlexander V. Chernikov 12599490a627SAlexander V. Chernikov IPFW_WLOCK(ch); 12609490a627SAlexander V. Chernikov link_table(ch, tc); 12619490a627SAlexander V. Chernikov IPFW_WUNLOCK(ch); 12629490a627SAlexander V. Chernikov 12639490a627SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 12649490a627SAlexander V. Chernikov 12659490a627SAlexander V. Chernikov return (0); 12669490a627SAlexander V. Chernikov } 12679490a627SAlexander V. Chernikov 1268d3a4f924SAlexander V. Chernikov void 1269d3a4f924SAlexander V. Chernikov objheader_to_ti(struct _ipfw_obj_header *oh, struct tid_info *ti) 1270d3a4f924SAlexander V. Chernikov { 1271d3a4f924SAlexander V. Chernikov 1272d3a4f924SAlexander V. Chernikov memset(ti, 0, sizeof(struct tid_info)); 127381d3153dSAlexander V. Chernikov ti->set = oh->ntlv.set; 1274d3a4f924SAlexander V. Chernikov ti->uidx = oh->idx; 1275d3a4f924SAlexander V. Chernikov ti->tlvs = &oh->ntlv; 1276d3a4f924SAlexander V. Chernikov ti->tlen = oh->ntlv.head.length; 1277d3a4f924SAlexander V. Chernikov } 1278d3a4f924SAlexander V. Chernikov 1279563b5ab1SAlexander V. Chernikov int 1280563b5ab1SAlexander V. Chernikov ipfw_export_table_ntlv(struct ip_fw_chain *ch, uint16_t kidx, 1281563b5ab1SAlexander V. Chernikov struct sockopt_data *sd) 1282563b5ab1SAlexander V. Chernikov { 1283563b5ab1SAlexander V. Chernikov struct namedobj_instance *ni; 1284563b5ab1SAlexander V. Chernikov struct named_object *no; 1285563b5ab1SAlexander V. Chernikov ipfw_obj_ntlv *ntlv; 1286563b5ab1SAlexander V. Chernikov 1287563b5ab1SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 1288563b5ab1SAlexander V. Chernikov 1289ac35ff17SAlexander V. Chernikov no = ipfw_objhash_lookup_kidx(ni, kidx); 1290563b5ab1SAlexander V. Chernikov KASSERT(no != NULL, ("invalid table kidx passed")); 1291563b5ab1SAlexander V. Chernikov 1292563b5ab1SAlexander V. Chernikov ntlv = (ipfw_obj_ntlv *)ipfw_get_sopt_space(sd, sizeof(*ntlv)); 1293563b5ab1SAlexander V. Chernikov if (ntlv == NULL) 1294563b5ab1SAlexander V. Chernikov return (ENOMEM); 1295563b5ab1SAlexander V. Chernikov 1296563b5ab1SAlexander V. Chernikov ntlv->head.type = IPFW_TLV_TBL_NAME; 1297563b5ab1SAlexander V. Chernikov ntlv->head.length = sizeof(*ntlv); 1298563b5ab1SAlexander V. Chernikov ntlv->idx = no->kidx; 1299563b5ab1SAlexander V. Chernikov strlcpy(ntlv->name, no->name, sizeof(ntlv->name)); 1300563b5ab1SAlexander V. Chernikov 1301563b5ab1SAlexander V. Chernikov return (0); 1302563b5ab1SAlexander V. Chernikov } 1303563b5ab1SAlexander V. Chernikov 13049f7d47b0SAlexander V. Chernikov static void 1305ac35ff17SAlexander V. Chernikov export_table_info(struct ip_fw_chain *ch, struct table_config *tc, 1306ac35ff17SAlexander V. Chernikov ipfw_xtable_info *i) 13079f7d47b0SAlexander V. Chernikov { 1308ac35ff17SAlexander V. Chernikov struct table_info *ti; 13099f7d47b0SAlexander V. Chernikov 13109f7d47b0SAlexander V. Chernikov i->type = tc->no.type; 1311ac35ff17SAlexander V. Chernikov i->vtype = tc->vtype; 13129f7d47b0SAlexander V. Chernikov i->set = tc->no.set; 13139f7d47b0SAlexander V. Chernikov i->kidx = tc->no.kidx; 13149f7d47b0SAlexander V. Chernikov i->refcnt = tc->no.refcnt; 13159f7d47b0SAlexander V. Chernikov i->count = tc->count; 131681d3153dSAlexander V. Chernikov i->size = tc->count * sizeof(ipfw_obj_tentry); 1317f1220db8SAlexander V. Chernikov i->size += sizeof(ipfw_obj_header) + sizeof(ipfw_xtable_info); 13189f7d47b0SAlexander V. Chernikov strlcpy(i->tablename, tc->tablename, sizeof(i->tablename)); 1319ac35ff17SAlexander V. Chernikov if (tc->ta->print_config != NULL) { 1320ac35ff17SAlexander V. Chernikov /* Use algo function to print table config to string */ 1321ac35ff17SAlexander V. Chernikov ti = KIDX_TO_TI(ch, tc->no.kidx); 1322ac35ff17SAlexander V. Chernikov tc->ta->print_config(tc->astate, ti, i->algoname, 1323ac35ff17SAlexander V. Chernikov sizeof(i->algoname)); 1324ac35ff17SAlexander V. Chernikov } else 1325ac35ff17SAlexander V. Chernikov strlcpy(i->algoname, tc->ta->name, sizeof(i->algoname)); 13269f7d47b0SAlexander V. Chernikov } 13279f7d47b0SAlexander V. Chernikov 1328ac35ff17SAlexander V. Chernikov struct dump_table_args { 1329ac35ff17SAlexander V. Chernikov struct ip_fw_chain *ch; 1330ac35ff17SAlexander V. Chernikov struct sockopt_data *sd; 1331ac35ff17SAlexander V. Chernikov }; 1332ac35ff17SAlexander V. Chernikov 13339f7d47b0SAlexander V. Chernikov static void 13349f7d47b0SAlexander V. Chernikov export_table_internal(struct namedobj_instance *ni, struct named_object *no, 13359f7d47b0SAlexander V. Chernikov void *arg) 13363b3a8eb9SGleb Smirnoff { 13379f7d47b0SAlexander V. Chernikov ipfw_xtable_info *i; 1338ac35ff17SAlexander V. Chernikov struct dump_table_args *dta; 13393b3a8eb9SGleb Smirnoff 1340ac35ff17SAlexander V. Chernikov dta = (struct dump_table_args *)arg; 1341ac35ff17SAlexander V. Chernikov 1342ac35ff17SAlexander V. Chernikov i = (ipfw_xtable_info *)ipfw_get_sopt_space(dta->sd, sizeof(*i)); 134368394ec8SAlexander V. Chernikov KASSERT(i != 0, ("previously checked buffer is not enough")); 13449f7d47b0SAlexander V. Chernikov 1345ac35ff17SAlexander V. Chernikov export_table_info(dta->ch, (struct table_config *)no, i); 13469f7d47b0SAlexander V. Chernikov } 13479f7d47b0SAlexander V. Chernikov 1348f1220db8SAlexander V. Chernikov /* 1349f1220db8SAlexander V. Chernikov * Export all tables as ipfw_xtable_info structures to 13502d99a349SAlexander V. Chernikov * storage provided by @sd. 1351f1220db8SAlexander V. Chernikov * Returns 0 on success. 1352f1220db8SAlexander V. Chernikov */ 1353f1220db8SAlexander V. Chernikov static int 13542d99a349SAlexander V. Chernikov export_tables(struct ip_fw_chain *ch, ipfw_obj_lheader *olh, 13552d99a349SAlexander V. Chernikov struct sockopt_data *sd) 13569f7d47b0SAlexander V. Chernikov { 13579f7d47b0SAlexander V. Chernikov uint32_t size; 13589f7d47b0SAlexander V. Chernikov uint32_t count; 1359ac35ff17SAlexander V. Chernikov struct dump_table_args dta; 13609f7d47b0SAlexander V. Chernikov 13619f7d47b0SAlexander V. Chernikov count = ipfw_objhash_count(CHAIN_TO_NI(ch)); 13629f7d47b0SAlexander V. Chernikov size = count * sizeof(ipfw_xtable_info) + sizeof(ipfw_obj_lheader); 13632d99a349SAlexander V. Chernikov 13642d99a349SAlexander V. Chernikov /* Fill in header regadless of buffer size */ 1365f1220db8SAlexander V. Chernikov olh->count = count; 1366f1220db8SAlexander V. Chernikov olh->objsize = sizeof(ipfw_xtable_info); 13672d99a349SAlexander V. Chernikov 13682d99a349SAlexander V. Chernikov if (size > olh->size) { 13692d99a349SAlexander V. Chernikov olh->size = size; 13709f7d47b0SAlexander V. Chernikov return (ENOMEM); 1371f1220db8SAlexander V. Chernikov } 137268394ec8SAlexander V. Chernikov 13739f7d47b0SAlexander V. Chernikov olh->size = size; 13742d99a349SAlexander V. Chernikov 1375ac35ff17SAlexander V. Chernikov dta.ch = ch; 1376ac35ff17SAlexander V. Chernikov dta.sd = sd; 1377ac35ff17SAlexander V. Chernikov 1378ac35ff17SAlexander V. Chernikov ipfw_objhash_foreach(CHAIN_TO_NI(ch), export_table_internal, &dta); 13799f7d47b0SAlexander V. Chernikov 13803b3a8eb9SGleb Smirnoff return (0); 13813b3a8eb9SGleb Smirnoff } 13823b3a8eb9SGleb Smirnoff 138381d3153dSAlexander V. Chernikov /* 138481d3153dSAlexander V. Chernikov * Legacy IP_FW_TABLE_GETSIZE handler 138581d3153dSAlexander V. Chernikov */ 13863b3a8eb9SGleb Smirnoff int 1387b074b7bbSAlexander V. Chernikov ipfw_count_table(struct ip_fw_chain *ch, struct tid_info *ti, uint32_t *cnt) 13883b3a8eb9SGleb Smirnoff { 1389b074b7bbSAlexander V. Chernikov struct table_config *tc; 13903b3a8eb9SGleb Smirnoff 1391b074b7bbSAlexander V. Chernikov if ((tc = find_table(CHAIN_TO_NI(ch), ti)) == NULL) 1392b074b7bbSAlexander V. Chernikov return (ESRCH); 13939f7d47b0SAlexander V. Chernikov *cnt = tc->count; 13943b3a8eb9SGleb Smirnoff return (0); 13953b3a8eb9SGleb Smirnoff } 13963b3a8eb9SGleb Smirnoff 13979f7d47b0SAlexander V. Chernikov 139881d3153dSAlexander V. Chernikov /* 139981d3153dSAlexander V. Chernikov * Legacy IP_FW_TABLE_XGETSIZE handler 140081d3153dSAlexander V. Chernikov */ 14019f7d47b0SAlexander V. Chernikov int 14029f7d47b0SAlexander V. Chernikov ipfw_count_xtable(struct ip_fw_chain *ch, struct tid_info *ti, uint32_t *cnt) 14033b3a8eb9SGleb Smirnoff { 14049f7d47b0SAlexander V. Chernikov struct table_config *tc; 14059f7d47b0SAlexander V. Chernikov 1406d3a4f924SAlexander V. Chernikov if ((tc = find_table(CHAIN_TO_NI(ch), ti)) == NULL) { 1407d3a4f924SAlexander V. Chernikov *cnt = 0; 14089f7d47b0SAlexander V. Chernikov return (0); /* 'table all list' requires success */ 1409d3a4f924SAlexander V. Chernikov } 14109f7d47b0SAlexander V. Chernikov *cnt = tc->count * sizeof(ipfw_table_xentry); 14119f7d47b0SAlexander V. Chernikov if (tc->count > 0) 14129f7d47b0SAlexander V. Chernikov *cnt += sizeof(ipfw_xtable); 14139f7d47b0SAlexander V. Chernikov return (0); 14149f7d47b0SAlexander V. Chernikov } 14159f7d47b0SAlexander V. Chernikov 14169f7d47b0SAlexander V. Chernikov static int 14179f7d47b0SAlexander V. Chernikov dump_table_entry(void *e, void *arg) 14189f7d47b0SAlexander V. Chernikov { 14199f7d47b0SAlexander V. Chernikov struct dump_args *da; 14209f7d47b0SAlexander V. Chernikov struct table_config *tc; 14219f7d47b0SAlexander V. Chernikov struct table_algo *ta; 14223b3a8eb9SGleb Smirnoff ipfw_table_entry *ent; 142381d3153dSAlexander V. Chernikov int error; 14243b3a8eb9SGleb Smirnoff 14259f7d47b0SAlexander V. Chernikov da = (struct dump_args *)arg; 14269f7d47b0SAlexander V. Chernikov 14279f7d47b0SAlexander V. Chernikov tc = da->tc; 14289f7d47b0SAlexander V. Chernikov ta = tc->ta; 14299f7d47b0SAlexander V. Chernikov 14309f7d47b0SAlexander V. Chernikov /* Out of memory, returning */ 1431f1220db8SAlexander V. Chernikov if (da->cnt == da->size) 14323b3a8eb9SGleb Smirnoff return (1); 1433f1220db8SAlexander V. Chernikov ent = da->ent++; 1434f1220db8SAlexander V. Chernikov ent->tbl = da->uidx; 1435f1220db8SAlexander V. Chernikov da->cnt++; 14369f7d47b0SAlexander V. Chernikov 143781d3153dSAlexander V. Chernikov error = ta->dump_tentry(tc->astate, da->ti, e, &da->tent); 143881d3153dSAlexander V. Chernikov if (error != 0) 143981d3153dSAlexander V. Chernikov return (error); 144081d3153dSAlexander V. Chernikov 144181d3153dSAlexander V. Chernikov ent->addr = da->tent.k.addr.s_addr; 144281d3153dSAlexander V. Chernikov ent->masklen = da->tent.masklen; 144381d3153dSAlexander V. Chernikov ent->value = da->tent.value; 144481d3153dSAlexander V. Chernikov 144581d3153dSAlexander V. Chernikov return (0); 14463b3a8eb9SGleb Smirnoff } 14473b3a8eb9SGleb Smirnoff 1448f1220db8SAlexander V. Chernikov /* 1449f1220db8SAlexander V. Chernikov * Dumps table in pre-8.1 legacy format. 1450f1220db8SAlexander V. Chernikov */ 14513b3a8eb9SGleb Smirnoff int 1452f1220db8SAlexander V. Chernikov ipfw_dump_table_legacy(struct ip_fw_chain *ch, struct tid_info *ti, 1453f1220db8SAlexander V. Chernikov ipfw_table *tbl) 14543b3a8eb9SGleb Smirnoff { 1455b074b7bbSAlexander V. Chernikov struct table_config *tc; 14569f7d47b0SAlexander V. Chernikov struct table_algo *ta; 14579f7d47b0SAlexander V. Chernikov struct dump_args da; 14583b3a8eb9SGleb Smirnoff 14593b3a8eb9SGleb Smirnoff tbl->cnt = 0; 14603b3a8eb9SGleb Smirnoff 1461b074b7bbSAlexander V. Chernikov if ((tc = find_table(CHAIN_TO_NI(ch), ti)) == NULL) 1462b074b7bbSAlexander V. Chernikov return (0); /* XXX: We should return ESRCH */ 14639f7d47b0SAlexander V. Chernikov 14649f7d47b0SAlexander V. Chernikov ta = tc->ta; 14659f7d47b0SAlexander V. Chernikov 146681d3153dSAlexander V. Chernikov /* This dump format supports IPv4 only */ 146781d3153dSAlexander V. Chernikov if (tc->no.type != IPFW_TABLE_CIDR) 146881d3153dSAlexander V. Chernikov return (0); 14699f7d47b0SAlexander V. Chernikov 1470d3a4f924SAlexander V. Chernikov memset(&da, 0, sizeof(da)); 14719f7d47b0SAlexander V. Chernikov da.ti = KIDX_TO_TI(ch, tc->no.kidx); 14729f7d47b0SAlexander V. Chernikov da.tc = tc; 1473f1220db8SAlexander V. Chernikov da.ent = &tbl->ent[0]; 1474f1220db8SAlexander V. Chernikov da.size = tbl->size; 14759f7d47b0SAlexander V. Chernikov 14769f7d47b0SAlexander V. Chernikov tbl->cnt = 0; 14779f7d47b0SAlexander V. Chernikov ta->foreach(tc->astate, da.ti, dump_table_entry, &da); 1478f1220db8SAlexander V. Chernikov tbl->cnt = da.cnt; 14799f7d47b0SAlexander V. Chernikov 14803b3a8eb9SGleb Smirnoff return (0); 14813b3a8eb9SGleb Smirnoff } 14823b3a8eb9SGleb Smirnoff 14839490a627SAlexander V. Chernikov /* 148481d3153dSAlexander V. Chernikov * Dumps table entry in eXtended format (v1)(current). 148581d3153dSAlexander V. Chernikov */ 148681d3153dSAlexander V. Chernikov static int 148781d3153dSAlexander V. Chernikov dump_table_tentry(void *e, void *arg) 148881d3153dSAlexander V. Chernikov { 148981d3153dSAlexander V. Chernikov struct dump_args *da; 149081d3153dSAlexander V. Chernikov struct table_config *tc; 149181d3153dSAlexander V. Chernikov struct table_algo *ta; 149281d3153dSAlexander V. Chernikov ipfw_obj_tentry *tent; 149381d3153dSAlexander V. Chernikov 149481d3153dSAlexander V. Chernikov da = (struct dump_args *)arg; 149581d3153dSAlexander V. Chernikov 149681d3153dSAlexander V. Chernikov tc = da->tc; 149781d3153dSAlexander V. Chernikov ta = tc->ta; 149881d3153dSAlexander V. Chernikov 149981d3153dSAlexander V. Chernikov tent = (ipfw_obj_tentry *)ipfw_get_sopt_space(da->sd, sizeof(*tent)); 150081d3153dSAlexander V. Chernikov /* Out of memory, returning */ 150181d3153dSAlexander V. Chernikov if (tent == NULL) { 150281d3153dSAlexander V. Chernikov da->error = ENOMEM; 150381d3153dSAlexander V. Chernikov return (1); 150481d3153dSAlexander V. Chernikov } 150581d3153dSAlexander V. Chernikov tent->head.length = sizeof(ipfw_obj_tentry); 150681d3153dSAlexander V. Chernikov tent->idx = da->uidx; 150781d3153dSAlexander V. Chernikov 150881d3153dSAlexander V. Chernikov return (ta->dump_tentry(tc->astate, da->ti, e, tent)); 150981d3153dSAlexander V. Chernikov } 151081d3153dSAlexander V. Chernikov 151181d3153dSAlexander V. Chernikov /* 151281d3153dSAlexander V. Chernikov * Dumps table entry in eXtended format (v0). 15139490a627SAlexander V. Chernikov */ 15143b3a8eb9SGleb Smirnoff static int 15159f7d47b0SAlexander V. Chernikov dump_table_xentry(void *e, void *arg) 15163b3a8eb9SGleb Smirnoff { 15179f7d47b0SAlexander V. Chernikov struct dump_args *da; 15189f7d47b0SAlexander V. Chernikov struct table_config *tc; 15199f7d47b0SAlexander V. Chernikov struct table_algo *ta; 15203b3a8eb9SGleb Smirnoff ipfw_table_xentry *xent; 152181d3153dSAlexander V. Chernikov ipfw_obj_tentry *tent; 152281d3153dSAlexander V. Chernikov int error; 15233b3a8eb9SGleb Smirnoff 15249f7d47b0SAlexander V. Chernikov da = (struct dump_args *)arg; 15259f7d47b0SAlexander V. Chernikov 15269f7d47b0SAlexander V. Chernikov tc = da->tc; 15279f7d47b0SAlexander V. Chernikov ta = tc->ta; 15289f7d47b0SAlexander V. Chernikov 15292d99a349SAlexander V. Chernikov xent = (ipfw_table_xentry *)ipfw_get_sopt_space(da->sd, sizeof(*xent)); 15303b3a8eb9SGleb Smirnoff /* Out of memory, returning */ 15312d99a349SAlexander V. Chernikov if (xent == NULL) 15323b3a8eb9SGleb Smirnoff return (1); 15333b3a8eb9SGleb Smirnoff xent->len = sizeof(ipfw_table_xentry); 1534f1220db8SAlexander V. Chernikov xent->tbl = da->uidx; 15359f7d47b0SAlexander V. Chernikov 153681d3153dSAlexander V. Chernikov memset(&da->tent, 0, sizeof(da->tent)); 153781d3153dSAlexander V. Chernikov tent = &da->tent; 153881d3153dSAlexander V. Chernikov error = ta->dump_tentry(tc->astate, da->ti, e, tent); 153981d3153dSAlexander V. Chernikov if (error != 0) 154081d3153dSAlexander V. Chernikov return (error); 154181d3153dSAlexander V. Chernikov 154281d3153dSAlexander V. Chernikov /* Convert current format to previous one */ 154381d3153dSAlexander V. Chernikov xent->masklen = tent->masklen; 154481d3153dSAlexander V. Chernikov xent->value = tent->value; 154581d3153dSAlexander V. Chernikov /* Apply some hacks */ 154681d3153dSAlexander V. Chernikov if (tc->no.type == IPFW_TABLE_CIDR && tent->subtype == AF_INET) { 154781d3153dSAlexander V. Chernikov xent->k.addr6.s6_addr32[3] = tent->k.addr.s_addr; 154881d3153dSAlexander V. Chernikov xent->flags = IPFW_TCF_INET; 154981d3153dSAlexander V. Chernikov } else 155081d3153dSAlexander V. Chernikov memcpy(&xent->k, &tent->k, sizeof(xent->k)); 155181d3153dSAlexander V. Chernikov 155281d3153dSAlexander V. Chernikov return (0); 15539f7d47b0SAlexander V. Chernikov } 15549f7d47b0SAlexander V. Chernikov 15559f7d47b0SAlexander V. Chernikov /* 15569f7d47b0SAlexander V. Chernikov * Table algorithms 15579f7d47b0SAlexander V. Chernikov */ 15583b3a8eb9SGleb Smirnoff 15599f7d47b0SAlexander V. Chernikov /* 15609490a627SAlexander V. Chernikov * Finds algoritm by index, table type or supplied name 15619f7d47b0SAlexander V. Chernikov */ 15629f7d47b0SAlexander V. Chernikov static struct table_algo * 15639490a627SAlexander V. Chernikov find_table_algo(struct tables_config *tcfg, struct tid_info *ti, char *name) 15649f7d47b0SAlexander V. Chernikov { 15659490a627SAlexander V. Chernikov int i, l; 15669490a627SAlexander V. Chernikov struct table_algo *ta; 15679f7d47b0SAlexander V. Chernikov 15689f7d47b0SAlexander V. Chernikov /* Search by index */ 15699f7d47b0SAlexander V. Chernikov if (ti->atype != 0) { 15709f7d47b0SAlexander V. Chernikov if (ti->atype > tcfg->algo_count) 15719f7d47b0SAlexander V. Chernikov return (NULL); 15729f7d47b0SAlexander V. Chernikov return (tcfg->algo[ti->atype]); 15739f7d47b0SAlexander V. Chernikov } 15749f7d47b0SAlexander V. Chernikov 15759490a627SAlexander V. Chernikov /* Search by name if supplied */ 15769490a627SAlexander V. Chernikov if (name != NULL) { 15779490a627SAlexander V. Chernikov /* TODO: better search */ 15789490a627SAlexander V. Chernikov for (i = 1; i <= tcfg->algo_count; i++) { 15799490a627SAlexander V. Chernikov ta = tcfg->algo[i]; 15809490a627SAlexander V. Chernikov 15819490a627SAlexander V. Chernikov /* 15829490a627SAlexander V. Chernikov * One can supply additional algorithm 15839490a627SAlexander V. Chernikov * parameters so we compare only the first word 15849490a627SAlexander V. Chernikov * of supplied name: 15859490a627SAlexander V. Chernikov * 'hash_cidr hsize=32' 15869490a627SAlexander V. Chernikov * '^^^^^^^^^' 15879490a627SAlexander V. Chernikov * 15889490a627SAlexander V. Chernikov */ 15899490a627SAlexander V. Chernikov l = strlen(ta->name); 15909490a627SAlexander V. Chernikov if (strncmp(name, ta->name, l) == 0) { 15919490a627SAlexander V. Chernikov if (name[l] == '\0' || name[l] == ' ') 15929490a627SAlexander V. Chernikov return (ta); 15939490a627SAlexander V. Chernikov } 15949490a627SAlexander V. Chernikov } 15959490a627SAlexander V. Chernikov 15969490a627SAlexander V. Chernikov return (NULL); 15979490a627SAlexander V. Chernikov } 15989490a627SAlexander V. Chernikov 15999f7d47b0SAlexander V. Chernikov /* Search by type */ 16009f7d47b0SAlexander V. Chernikov switch (ti->type) { 16013b3a8eb9SGleb Smirnoff case IPFW_TABLE_CIDR: 160274b941f0SAlexander V. Chernikov return (&cidr_radix); 16033b3a8eb9SGleb Smirnoff case IPFW_TABLE_INTERFACE: 160474b941f0SAlexander V. Chernikov return (&iface_idx); 16053b3a8eb9SGleb Smirnoff } 16063b3a8eb9SGleb Smirnoff 16079f7d47b0SAlexander V. Chernikov return (NULL); 16083b3a8eb9SGleb Smirnoff } 16093b3a8eb9SGleb Smirnoff 16100b565ac0SAlexander V. Chernikov int 16110b565ac0SAlexander V. Chernikov ipfw_add_table_algo(struct ip_fw_chain *ch, struct table_algo *ta, size_t size, 16120b565ac0SAlexander V. Chernikov int *idx) 16133b3a8eb9SGleb Smirnoff { 16149f7d47b0SAlexander V. Chernikov struct tables_config *tcfg; 16150b565ac0SAlexander V. Chernikov struct table_algo *ta_new; 16160b565ac0SAlexander V. Chernikov 16170b565ac0SAlexander V. Chernikov if (size > sizeof(struct table_algo)) 16180b565ac0SAlexander V. Chernikov return (EINVAL); 16190b565ac0SAlexander V. Chernikov 16200b565ac0SAlexander V. Chernikov ta_new = malloc(sizeof(struct table_algo), M_IPFW, M_WAITOK | M_ZERO); 16210b565ac0SAlexander V. Chernikov memcpy(ta_new, ta, size); 16223b3a8eb9SGleb Smirnoff 16239f7d47b0SAlexander V. Chernikov tcfg = CHAIN_TO_TCFG(ch); 1624b074b7bbSAlexander V. Chernikov 16259f7d47b0SAlexander V. Chernikov KASSERT(tcfg->algo_count < 255, ("Increase algo array size")); 16269f7d47b0SAlexander V. Chernikov 16270b565ac0SAlexander V. Chernikov tcfg->algo[++tcfg->algo_count] = ta_new; 16280b565ac0SAlexander V. Chernikov ta_new->idx = tcfg->algo_count; 16290b565ac0SAlexander V. Chernikov 16300b565ac0SAlexander V. Chernikov *idx = ta_new->idx; 16310b565ac0SAlexander V. Chernikov 16320b565ac0SAlexander V. Chernikov return (0); 16330b565ac0SAlexander V. Chernikov } 16340b565ac0SAlexander V. Chernikov 16350b565ac0SAlexander V. Chernikov void 16360b565ac0SAlexander V. Chernikov ipfw_del_table_algo(struct ip_fw_chain *ch, int idx) 16370b565ac0SAlexander V. Chernikov { 16380b565ac0SAlexander V. Chernikov struct tables_config *tcfg; 16390b565ac0SAlexander V. Chernikov struct table_algo *ta; 16400b565ac0SAlexander V. Chernikov 16410b565ac0SAlexander V. Chernikov tcfg = CHAIN_TO_TCFG(ch); 16420b565ac0SAlexander V. Chernikov 16430b565ac0SAlexander V. Chernikov KASSERT(idx <= tcfg->algo_count, ("algo idx %d out of rage 1..%d", idx, 16440b565ac0SAlexander V. Chernikov tcfg->algo_count)); 16450b565ac0SAlexander V. Chernikov 16460b565ac0SAlexander V. Chernikov ta = tcfg->algo[idx]; 16470b565ac0SAlexander V. Chernikov KASSERT(ta != NULL, ("algo idx %d is NULL", idx)); 16480b565ac0SAlexander V. Chernikov free(ta, M_IPFW); 16493b3a8eb9SGleb Smirnoff } 16503b3a8eb9SGleb Smirnoff 16519d099b4fSAlexander V. Chernikov /* 16529d099b4fSAlexander V. Chernikov * Lists all table algorithms currently available. 16539d099b4fSAlexander V. Chernikov * Data layout (v0)(current): 16549d099b4fSAlexander V. Chernikov * Request: [ ipfw_obj_lheader ], size = ipfw_obj_lheader.size 16559d099b4fSAlexander V. Chernikov * Reply: [ ipfw_obj_lheader ipfw_ta_info x N ] 16569d099b4fSAlexander V. Chernikov * 16579d099b4fSAlexander V. Chernikov * Returns 0 on success 16589d099b4fSAlexander V. Chernikov */ 16599d099b4fSAlexander V. Chernikov int 16609d099b4fSAlexander V. Chernikov ipfw_list_table_algo(struct ip_fw_chain *ch, struct sockopt_data *sd) 16619d099b4fSAlexander V. Chernikov { 16629d099b4fSAlexander V. Chernikov struct _ipfw_obj_lheader *olh; 16639d099b4fSAlexander V. Chernikov struct tables_config *tcfg; 16649d099b4fSAlexander V. Chernikov ipfw_ta_info *i; 16659d099b4fSAlexander V. Chernikov struct table_algo *ta; 16669d099b4fSAlexander V. Chernikov uint32_t count, n, size; 16679d099b4fSAlexander V. Chernikov 16689d099b4fSAlexander V. Chernikov olh = (struct _ipfw_obj_lheader *)ipfw_get_sopt_header(sd,sizeof(*olh)); 16699d099b4fSAlexander V. Chernikov if (olh == NULL) 16709d099b4fSAlexander V. Chernikov return (EINVAL); 16719d099b4fSAlexander V. Chernikov if (sd->valsize < olh->size) 16729d099b4fSAlexander V. Chernikov return (EINVAL); 16739d099b4fSAlexander V. Chernikov 16749d099b4fSAlexander V. Chernikov IPFW_UH_RLOCK(ch); 16759d099b4fSAlexander V. Chernikov tcfg = CHAIN_TO_TCFG(ch); 16769d099b4fSAlexander V. Chernikov count = tcfg->algo_count; 16779d099b4fSAlexander V. Chernikov size = count * sizeof(ipfw_ta_info) + sizeof(ipfw_obj_lheader); 16789d099b4fSAlexander V. Chernikov 16799d099b4fSAlexander V. Chernikov /* Fill in header regadless of buffer size */ 16809d099b4fSAlexander V. Chernikov olh->count = count; 16819d099b4fSAlexander V. Chernikov olh->objsize = sizeof(ipfw_ta_info); 16829d099b4fSAlexander V. Chernikov 16839d099b4fSAlexander V. Chernikov if (size > olh->size) { 16849d099b4fSAlexander V. Chernikov olh->size = size; 16859d099b4fSAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 16869d099b4fSAlexander V. Chernikov return (ENOMEM); 16879d099b4fSAlexander V. Chernikov } 16889d099b4fSAlexander V. Chernikov olh->size = size; 16899d099b4fSAlexander V. Chernikov 16909d099b4fSAlexander V. Chernikov for (n = 1; n <= count; n++) { 16919d099b4fSAlexander V. Chernikov i = (ipfw_ta_info *)ipfw_get_sopt_space(sd, sizeof(*i)); 16929d099b4fSAlexander V. Chernikov KASSERT(i != 0, ("previously checked buffer is not enough")); 16939d099b4fSAlexander V. Chernikov ta = tcfg->algo[n]; 16949d099b4fSAlexander V. Chernikov strlcpy(i->algoname, ta->name, sizeof(i->algoname)); 16959d099b4fSAlexander V. Chernikov i->type = ta->type; 16969d099b4fSAlexander V. Chernikov i->refcnt = ta->refcnt; 16979d099b4fSAlexander V. Chernikov } 16989d099b4fSAlexander V. Chernikov 16999d099b4fSAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 17009d099b4fSAlexander V. Chernikov 17019d099b4fSAlexander V. Chernikov return (0); 17029d099b4fSAlexander V. Chernikov } 17039d099b4fSAlexander V. Chernikov 17049f7d47b0SAlexander V. Chernikov 1705b074b7bbSAlexander V. Chernikov /* 1706b074b7bbSAlexander V. Chernikov * Tables rewriting code 1707b074b7bbSAlexander V. Chernikov * 1708b074b7bbSAlexander V. Chernikov */ 1709b074b7bbSAlexander V. Chernikov 1710b074b7bbSAlexander V. Chernikov /* 1711b074b7bbSAlexander V. Chernikov * Determine table number and lookup type for @cmd. 1712b074b7bbSAlexander V. Chernikov * Fill @tbl and @type with appropriate values. 1713b074b7bbSAlexander V. Chernikov * Returns 0 for relevant opcodes, 1 otherwise. 1714b074b7bbSAlexander V. Chernikov */ 1715b074b7bbSAlexander V. Chernikov static int 1716b074b7bbSAlexander V. Chernikov classify_table_opcode(ipfw_insn *cmd, uint16_t *puidx, uint8_t *ptype) 1717b074b7bbSAlexander V. Chernikov { 1718b074b7bbSAlexander V. Chernikov ipfw_insn_if *cmdif; 1719b074b7bbSAlexander V. Chernikov int skip; 1720b074b7bbSAlexander V. Chernikov uint16_t v; 1721b074b7bbSAlexander V. Chernikov 1722b074b7bbSAlexander V. Chernikov skip = 1; 1723b074b7bbSAlexander V. Chernikov 1724b074b7bbSAlexander V. Chernikov switch (cmd->opcode) { 1725b074b7bbSAlexander V. Chernikov case O_IP_SRC_LOOKUP: 1726b074b7bbSAlexander V. Chernikov case O_IP_DST_LOOKUP: 1727b074b7bbSAlexander V. Chernikov /* Basic IPv4/IPv6 or u32 lookups */ 1728b074b7bbSAlexander V. Chernikov *puidx = cmd->arg1; 1729b074b7bbSAlexander V. Chernikov /* Assume CIDR by default */ 1730b074b7bbSAlexander V. Chernikov *ptype = IPFW_TABLE_CIDR; 1731b074b7bbSAlexander V. Chernikov skip = 0; 1732b074b7bbSAlexander V. Chernikov 1733b074b7bbSAlexander V. Chernikov if (F_LEN(cmd) > F_INSN_SIZE(ipfw_insn_u32)) { 1734b074b7bbSAlexander V. Chernikov /* 1735b074b7bbSAlexander V. Chernikov * generic lookup. The key must be 1736b074b7bbSAlexander V. Chernikov * in 32bit big-endian format. 1737b074b7bbSAlexander V. Chernikov */ 1738b074b7bbSAlexander V. Chernikov v = ((ipfw_insn_u32 *)cmd)->d[1]; 1739b074b7bbSAlexander V. Chernikov switch (v) { 1740b074b7bbSAlexander V. Chernikov case 0: 1741b074b7bbSAlexander V. Chernikov case 1: 1742b074b7bbSAlexander V. Chernikov /* IPv4 src/dst */ 1743b074b7bbSAlexander V. Chernikov break; 1744b074b7bbSAlexander V. Chernikov case 2: 1745b074b7bbSAlexander V. Chernikov case 3: 1746b074b7bbSAlexander V. Chernikov /* src/dst port */ 1747b074b7bbSAlexander V. Chernikov //type = IPFW_TABLE_U16; 1748b074b7bbSAlexander V. Chernikov break; 1749b074b7bbSAlexander V. Chernikov case 4: 1750b074b7bbSAlexander V. Chernikov /* uid/gid */ 1751b074b7bbSAlexander V. Chernikov //type = IPFW_TABLE_U32; 1752b074b7bbSAlexander V. Chernikov case 5: 1753b074b7bbSAlexander V. Chernikov //type = IPFW_TABLE_U32; 1754b074b7bbSAlexander V. Chernikov /* jid */ 1755b074b7bbSAlexander V. Chernikov case 6: 1756b074b7bbSAlexander V. Chernikov //type = IPFW_TABLE_U16; 1757b074b7bbSAlexander V. Chernikov /* dscp */ 1758b074b7bbSAlexander V. Chernikov break; 1759b074b7bbSAlexander V. Chernikov } 1760b074b7bbSAlexander V. Chernikov } 1761b074b7bbSAlexander V. Chernikov break; 1762b074b7bbSAlexander V. Chernikov case O_XMIT: 1763b074b7bbSAlexander V. Chernikov case O_RECV: 1764b074b7bbSAlexander V. Chernikov case O_VIA: 1765b074b7bbSAlexander V. Chernikov /* Interface table, possibly */ 1766b074b7bbSAlexander V. Chernikov cmdif = (ipfw_insn_if *)cmd; 1767b074b7bbSAlexander V. Chernikov if (cmdif->name[0] != '\1') 1768b074b7bbSAlexander V. Chernikov break; 1769b074b7bbSAlexander V. Chernikov 1770b074b7bbSAlexander V. Chernikov *ptype = IPFW_TABLE_INTERFACE; 1771b074b7bbSAlexander V. Chernikov *puidx = cmdif->p.glob; 1772b074b7bbSAlexander V. Chernikov skip = 0; 1773b074b7bbSAlexander V. Chernikov break; 1774b074b7bbSAlexander V. Chernikov } 1775b074b7bbSAlexander V. Chernikov 1776b074b7bbSAlexander V. Chernikov return (skip); 1777b074b7bbSAlexander V. Chernikov } 1778b074b7bbSAlexander V. Chernikov 1779b074b7bbSAlexander V. Chernikov /* 1780b074b7bbSAlexander V. Chernikov * Sets new table value for given opcode. 1781b074b7bbSAlexander V. Chernikov * Assume the same opcodes as classify_table_opcode() 1782b074b7bbSAlexander V. Chernikov */ 1783b074b7bbSAlexander V. Chernikov static void 1784b074b7bbSAlexander V. Chernikov update_table_opcode(ipfw_insn *cmd, uint16_t idx) 1785b074b7bbSAlexander V. Chernikov { 1786b074b7bbSAlexander V. Chernikov ipfw_insn_if *cmdif; 1787b074b7bbSAlexander V. Chernikov 1788b074b7bbSAlexander V. Chernikov switch (cmd->opcode) { 1789b074b7bbSAlexander V. Chernikov case O_IP_SRC_LOOKUP: 1790b074b7bbSAlexander V. Chernikov case O_IP_DST_LOOKUP: 1791b074b7bbSAlexander V. Chernikov /* Basic IPv4/IPv6 or u32 lookups */ 1792b074b7bbSAlexander V. Chernikov cmd->arg1 = idx; 1793b074b7bbSAlexander V. Chernikov break; 1794b074b7bbSAlexander V. Chernikov case O_XMIT: 1795b074b7bbSAlexander V. Chernikov case O_RECV: 1796b074b7bbSAlexander V. Chernikov case O_VIA: 1797b074b7bbSAlexander V. Chernikov /* Interface table, possibly */ 1798b074b7bbSAlexander V. Chernikov cmdif = (ipfw_insn_if *)cmd; 1799b074b7bbSAlexander V. Chernikov cmdif->p.glob = idx; 1800b074b7bbSAlexander V. Chernikov break; 1801b074b7bbSAlexander V. Chernikov } 1802b074b7bbSAlexander V. Chernikov } 1803b074b7bbSAlexander V. Chernikov 1804ac35ff17SAlexander V. Chernikov /* 1805ac35ff17SAlexander V. Chernikov * Checks table name for validity. 1806ac35ff17SAlexander V. Chernikov * Enforce basic length checks, the rest 1807ac35ff17SAlexander V. Chernikov * should be done in userland. 1808ac35ff17SAlexander V. Chernikov * 1809ac35ff17SAlexander V. Chernikov * Returns 0 if name is considered valid. 1810ac35ff17SAlexander V. Chernikov */ 1811ac35ff17SAlexander V. Chernikov int 1812ac35ff17SAlexander V. Chernikov ipfw_check_table_name(char *name) 1813ac35ff17SAlexander V. Chernikov { 1814ac35ff17SAlexander V. Chernikov int nsize; 1815ac35ff17SAlexander V. Chernikov ipfw_obj_ntlv *ntlv = NULL; 1816ac35ff17SAlexander V. Chernikov 1817ac35ff17SAlexander V. Chernikov nsize = sizeof(ntlv->name); 1818ac35ff17SAlexander V. Chernikov 1819ac35ff17SAlexander V. Chernikov if (strnlen(name, nsize) == nsize) 1820ac35ff17SAlexander V. Chernikov return (EINVAL); 1821ac35ff17SAlexander V. Chernikov 1822ac35ff17SAlexander V. Chernikov if (name[0] == '\0') 1823ac35ff17SAlexander V. Chernikov return (EINVAL); 1824ac35ff17SAlexander V. Chernikov 1825ac35ff17SAlexander V. Chernikov /* 1826ac35ff17SAlexander V. Chernikov * TODO: do some more complicated checks 1827ac35ff17SAlexander V. Chernikov */ 1828ac35ff17SAlexander V. Chernikov 1829ac35ff17SAlexander V. Chernikov return (0); 1830ac35ff17SAlexander V. Chernikov } 1831ac35ff17SAlexander V. Chernikov 1832ac35ff17SAlexander V. Chernikov /* 1833ac35ff17SAlexander V. Chernikov * Find tablename TLV by @uid. 1834ac35ff17SAlexander V. Chernikov * Check @tlvs for valid data inside. 1835ac35ff17SAlexander V. Chernikov * 1836ac35ff17SAlexander V. Chernikov * Returns pointer to found TLV or NULL. 1837ac35ff17SAlexander V. Chernikov */ 1838ac35ff17SAlexander V. Chernikov static ipfw_obj_ntlv * 1839b074b7bbSAlexander V. Chernikov find_name_tlv(void *tlvs, int len, uint16_t uidx) 1840b074b7bbSAlexander V. Chernikov { 18419f7d47b0SAlexander V. Chernikov ipfw_obj_ntlv *ntlv; 1842b074b7bbSAlexander V. Chernikov uintptr_t pa, pe; 1843b074b7bbSAlexander V. Chernikov int l; 1844b074b7bbSAlexander V. Chernikov 1845b074b7bbSAlexander V. Chernikov pa = (uintptr_t)tlvs; 1846b074b7bbSAlexander V. Chernikov pe = pa + len; 1847b074b7bbSAlexander V. Chernikov l = 0; 1848b074b7bbSAlexander V. Chernikov for (; pa < pe; pa += l) { 18499f7d47b0SAlexander V. Chernikov ntlv = (ipfw_obj_ntlv *)pa; 1850b074b7bbSAlexander V. Chernikov l = ntlv->head.length; 1851ac35ff17SAlexander V. Chernikov 1852ac35ff17SAlexander V. Chernikov if (l != sizeof(*ntlv)) 1853ac35ff17SAlexander V. Chernikov return (NULL); 1854ac35ff17SAlexander V. Chernikov 1855563b5ab1SAlexander V. Chernikov if (ntlv->head.type != IPFW_TLV_TBL_NAME) 1856b074b7bbSAlexander V. Chernikov continue; 1857ac35ff17SAlexander V. Chernikov 1858b074b7bbSAlexander V. Chernikov if (ntlv->idx != uidx) 1859b074b7bbSAlexander V. Chernikov continue; 1860b074b7bbSAlexander V. Chernikov 1861ac35ff17SAlexander V. Chernikov if (ipfw_check_table_name(ntlv->name) != 0) 1862ac35ff17SAlexander V. Chernikov return (NULL); 1863ac35ff17SAlexander V. Chernikov 1864ac35ff17SAlexander V. Chernikov return (ntlv); 1865b074b7bbSAlexander V. Chernikov } 1866b074b7bbSAlexander V. Chernikov 1867b074b7bbSAlexander V. Chernikov return (NULL); 1868b074b7bbSAlexander V. Chernikov } 1869b074b7bbSAlexander V. Chernikov 1870ac35ff17SAlexander V. Chernikov /* 1871ac35ff17SAlexander V. Chernikov * Finds table config based on either legacy index 1872ac35ff17SAlexander V. Chernikov * or name in ntlv. 1873ac35ff17SAlexander V. Chernikov * Note @ti structure contains unchecked data from userland. 1874ac35ff17SAlexander V. Chernikov * 1875ac35ff17SAlexander V. Chernikov * Returns pointer to table_config or NULL. 1876ac35ff17SAlexander V. Chernikov */ 1877b074b7bbSAlexander V. Chernikov static struct table_config * 1878b074b7bbSAlexander V. Chernikov find_table(struct namedobj_instance *ni, struct tid_info *ti) 1879b074b7bbSAlexander V. Chernikov { 1880b074b7bbSAlexander V. Chernikov char *name, bname[16]; 1881b074b7bbSAlexander V. Chernikov struct named_object *no; 1882ac35ff17SAlexander V. Chernikov ipfw_obj_ntlv *ntlv; 1883ac35ff17SAlexander V. Chernikov uint32_t set; 1884b074b7bbSAlexander V. Chernikov 1885b074b7bbSAlexander V. Chernikov if (ti->tlvs != NULL) { 1886ac35ff17SAlexander V. Chernikov ntlv = find_name_tlv(ti->tlvs, ti->tlen, ti->uidx); 1887ac35ff17SAlexander V. Chernikov if (ntlv == NULL) 1888b074b7bbSAlexander V. Chernikov return (NULL); 1889ac35ff17SAlexander V. Chernikov name = ntlv->name; 1890ac35ff17SAlexander V. Chernikov set = ntlv->set; 1891b074b7bbSAlexander V. Chernikov } else { 1892b074b7bbSAlexander V. Chernikov snprintf(bname, sizeof(bname), "%d", ti->uidx); 1893b074b7bbSAlexander V. Chernikov name = bname; 1894ac35ff17SAlexander V. Chernikov set = 0; 1895b074b7bbSAlexander V. Chernikov } 1896b074b7bbSAlexander V. Chernikov 1897ac35ff17SAlexander V. Chernikov no = ipfw_objhash_lookup_name(ni, set, name); 1898b074b7bbSAlexander V. Chernikov 1899b074b7bbSAlexander V. Chernikov return ((struct table_config *)no); 1900b074b7bbSAlexander V. Chernikov } 1901b074b7bbSAlexander V. Chernikov 1902b074b7bbSAlexander V. Chernikov static struct table_config * 190368394ec8SAlexander V. Chernikov alloc_table_config(struct ip_fw_chain *ch, struct tid_info *ti, 1904db785d31SAlexander V. Chernikov struct table_algo *ta, char *aname, uint8_t vtype) 1905b074b7bbSAlexander V. Chernikov { 1906b074b7bbSAlexander V. Chernikov char *name, bname[16]; 1907b074b7bbSAlexander V. Chernikov struct table_config *tc; 1908b074b7bbSAlexander V. Chernikov int error; 1909ac35ff17SAlexander V. Chernikov ipfw_obj_ntlv *ntlv; 1910ac35ff17SAlexander V. Chernikov uint32_t set; 1911b074b7bbSAlexander V. Chernikov 1912b074b7bbSAlexander V. Chernikov if (ti->tlvs != NULL) { 1913ac35ff17SAlexander V. Chernikov ntlv = find_name_tlv(ti->tlvs, ti->tlen, ti->uidx); 1914ac35ff17SAlexander V. Chernikov if (ntlv == NULL) 1915b074b7bbSAlexander V. Chernikov return (NULL); 1916ac35ff17SAlexander V. Chernikov name = ntlv->name; 1917ac35ff17SAlexander V. Chernikov set = ntlv->set; 1918b074b7bbSAlexander V. Chernikov } else { 1919b074b7bbSAlexander V. Chernikov snprintf(bname, sizeof(bname), "%d", ti->uidx); 1920b074b7bbSAlexander V. Chernikov name = bname; 1921ac35ff17SAlexander V. Chernikov set = 0; 1922b074b7bbSAlexander V. Chernikov } 1923b074b7bbSAlexander V. Chernikov 1924b074b7bbSAlexander V. Chernikov tc = malloc(sizeof(struct table_config), M_IPFW, M_WAITOK | M_ZERO); 1925b074b7bbSAlexander V. Chernikov tc->no.name = tc->tablename; 1926b074b7bbSAlexander V. Chernikov tc->no.type = ti->type; 1927ac35ff17SAlexander V. Chernikov tc->no.set = set; 19289f7d47b0SAlexander V. Chernikov tc->ta = ta; 1929b074b7bbSAlexander V. Chernikov strlcpy(tc->tablename, name, sizeof(tc->tablename)); 1930ac35ff17SAlexander V. Chernikov /* Set default value type to u32 for compability reasons */ 1931db785d31SAlexander V. Chernikov if (vtype == 0) 1932ac35ff17SAlexander V. Chernikov tc->vtype = IPFW_VTYPE_U32; 1933db785d31SAlexander V. Chernikov else 1934db785d31SAlexander V. Chernikov tc->vtype = vtype; 1935b074b7bbSAlexander V. Chernikov 1936b074b7bbSAlexander V. Chernikov if (ti->tlvs == NULL) { 1937b074b7bbSAlexander V. Chernikov tc->no.compat = 1; 1938b074b7bbSAlexander V. Chernikov tc->no.uidx = ti->uidx; 1939b074b7bbSAlexander V. Chernikov } 1940b074b7bbSAlexander V. Chernikov 1941b074b7bbSAlexander V. Chernikov /* Preallocate data structures for new tables */ 194268394ec8SAlexander V. Chernikov error = ta->init(ch, &tc->astate, &tc->ti, aname); 1943b074b7bbSAlexander V. Chernikov if (error != 0) { 1944b074b7bbSAlexander V. Chernikov free(tc, M_IPFW); 1945b074b7bbSAlexander V. Chernikov return (NULL); 1946b074b7bbSAlexander V. Chernikov } 1947b074b7bbSAlexander V. Chernikov 1948b074b7bbSAlexander V. Chernikov return (tc); 1949b074b7bbSAlexander V. Chernikov } 1950b074b7bbSAlexander V. Chernikov 1951b074b7bbSAlexander V. Chernikov static void 1952b074b7bbSAlexander V. Chernikov free_table_config(struct namedobj_instance *ni, struct table_config *tc) 1953b074b7bbSAlexander V. Chernikov { 1954b074b7bbSAlexander V. Chernikov 1955b074b7bbSAlexander V. Chernikov if (tc->linked == 0) 195668394ec8SAlexander V. Chernikov tc->ta->destroy(tc->astate, &tc->ti); 1957b074b7bbSAlexander V. Chernikov 1958b074b7bbSAlexander V. Chernikov free(tc, M_IPFW); 1959b074b7bbSAlexander V. Chernikov } 1960b074b7bbSAlexander V. Chernikov 1961b074b7bbSAlexander V. Chernikov /* 1962b074b7bbSAlexander V. Chernikov * Links @tc to @chain table named instance. 1963b074b7bbSAlexander V. Chernikov * Sets appropriate type/states in @chain table info. 1964b074b7bbSAlexander V. Chernikov */ 1965b074b7bbSAlexander V. Chernikov static void 19669f7d47b0SAlexander V. Chernikov link_table(struct ip_fw_chain *ch, struct table_config *tc) 1967b074b7bbSAlexander V. Chernikov { 1968b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 19699f7d47b0SAlexander V. Chernikov struct table_info *ti; 1970b074b7bbSAlexander V. Chernikov uint16_t kidx; 1971b074b7bbSAlexander V. Chernikov 19729f7d47b0SAlexander V. Chernikov IPFW_UH_WLOCK_ASSERT(ch); 19739f7d47b0SAlexander V. Chernikov IPFW_WLOCK_ASSERT(ch); 1974b074b7bbSAlexander V. Chernikov 19759f7d47b0SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 1976b074b7bbSAlexander V. Chernikov kidx = tc->no.kidx; 1977b074b7bbSAlexander V. Chernikov 1978b074b7bbSAlexander V. Chernikov ipfw_objhash_add(ni, &tc->no); 19799f7d47b0SAlexander V. Chernikov 19809f7d47b0SAlexander V. Chernikov ti = KIDX_TO_TI(ch, kidx); 19819f7d47b0SAlexander V. Chernikov *ti = tc->ti; 1982b074b7bbSAlexander V. Chernikov 198368394ec8SAlexander V. Chernikov /* Notify algo on real @ti address */ 198468394ec8SAlexander V. Chernikov if (tc->ta->change_ti != NULL) 198568394ec8SAlexander V. Chernikov tc->ta->change_ti(tc->astate, ti); 198668394ec8SAlexander V. Chernikov 1987b074b7bbSAlexander V. Chernikov tc->linked = 1; 19889d099b4fSAlexander V. Chernikov tc->ta->refcnt++; 1989b074b7bbSAlexander V. Chernikov } 1990b074b7bbSAlexander V. Chernikov 1991b074b7bbSAlexander V. Chernikov /* 1992b074b7bbSAlexander V. Chernikov * Unlinks @tc from @chain table named instance. 1993b074b7bbSAlexander V. Chernikov * Zeroes states in @chain and stores them in @tc. 1994b074b7bbSAlexander V. Chernikov */ 1995b074b7bbSAlexander V. Chernikov static void 19969f7d47b0SAlexander V. Chernikov unlink_table(struct ip_fw_chain *ch, struct table_config *tc) 1997b074b7bbSAlexander V. Chernikov { 1998b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 19999f7d47b0SAlexander V. Chernikov struct table_info *ti; 2000b074b7bbSAlexander V. Chernikov uint16_t kidx; 2001b074b7bbSAlexander V. Chernikov 20029f7d47b0SAlexander V. Chernikov IPFW_UH_WLOCK_ASSERT(ch); 20039f7d47b0SAlexander V. Chernikov IPFW_WLOCK_ASSERT(ch); 2004b074b7bbSAlexander V. Chernikov 20059f7d47b0SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 2006b074b7bbSAlexander V. Chernikov kidx = tc->no.kidx; 2007b074b7bbSAlexander V. Chernikov 20089f7d47b0SAlexander V. Chernikov /* Clear state. @ti copy is already saved inside @tc */ 2009b074b7bbSAlexander V. Chernikov ipfw_objhash_del(ni, &tc->no); 20109f7d47b0SAlexander V. Chernikov ti = KIDX_TO_TI(ch, kidx); 20119f7d47b0SAlexander V. Chernikov memset(ti, 0, sizeof(struct table_info)); 2012b074b7bbSAlexander V. Chernikov tc->linked = 0; 20139d099b4fSAlexander V. Chernikov tc->ta->refcnt--; 201468394ec8SAlexander V. Chernikov 201568394ec8SAlexander V. Chernikov /* Notify algo on real @ti address */ 201668394ec8SAlexander V. Chernikov if (tc->ta->change_ti != NULL) 201768394ec8SAlexander V. Chernikov tc->ta->change_ti(tc->astate, NULL); 2018b074b7bbSAlexander V. Chernikov } 2019b074b7bbSAlexander V. Chernikov 2020b074b7bbSAlexander V. Chernikov /* 2021b074b7bbSAlexander V. Chernikov * Finds named object by @uidx number. 2022b074b7bbSAlexander V. Chernikov * Refs found object, allocate new index for non-existing object. 20239490a627SAlexander V. Chernikov * Fills in @oib with userland/kernel indexes. 20249490a627SAlexander V. Chernikov * First free oidx pointer is saved back in @oib. 2025b074b7bbSAlexander V. Chernikov * 2026b074b7bbSAlexander V. Chernikov * Returns 0 on success. 2027b074b7bbSAlexander V. Chernikov */ 2028b074b7bbSAlexander V. Chernikov static int 20299490a627SAlexander V. Chernikov bind_table_rule(struct ip_fw_chain *ch, struct ip_fw *rule, 20309490a627SAlexander V. Chernikov struct rule_check_info *ci, struct obj_idx **oib, struct tid_info *ti) 2031b074b7bbSAlexander V. Chernikov { 2032b074b7bbSAlexander V. Chernikov struct table_config *tc; 20339490a627SAlexander V. Chernikov struct namedobj_instance *ni; 20349490a627SAlexander V. Chernikov struct named_object *no; 20359490a627SAlexander V. Chernikov int error, l, cmdlen; 20369490a627SAlexander V. Chernikov ipfw_insn *cmd; 20379490a627SAlexander V. Chernikov struct obj_idx *pidx, *p; 20389490a627SAlexander V. Chernikov 20399490a627SAlexander V. Chernikov pidx = *oib; 20409490a627SAlexander V. Chernikov l = rule->cmd_len; 20419490a627SAlexander V. Chernikov cmd = rule->cmd; 20429490a627SAlexander V. Chernikov cmdlen = 0; 20439490a627SAlexander V. Chernikov error = 0; 20449490a627SAlexander V. Chernikov 20459490a627SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 20469490a627SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 20479490a627SAlexander V. Chernikov 20489490a627SAlexander V. Chernikov for ( ; l > 0 ; l -= cmdlen, cmd += cmdlen) { 20499490a627SAlexander V. Chernikov cmdlen = F_LEN(cmd); 20509490a627SAlexander V. Chernikov 20519490a627SAlexander V. Chernikov if (classify_table_opcode(cmd, &ti->uidx, &ti->type) != 0) 20529490a627SAlexander V. Chernikov continue; 2053b074b7bbSAlexander V. Chernikov 2054b074b7bbSAlexander V. Chernikov pidx->uidx = ti->uidx; 2055b074b7bbSAlexander V. Chernikov pidx->type = ti->type; 2056b074b7bbSAlexander V. Chernikov 20579490a627SAlexander V. Chernikov if ((tc = find_table(ni, ti)) != NULL) { 20589490a627SAlexander V. Chernikov if (tc->no.type != ti->type) { 20599490a627SAlexander V. Chernikov /* Incompatible types */ 20609490a627SAlexander V. Chernikov error = EINVAL; 20619490a627SAlexander V. Chernikov break; 20629490a627SAlexander V. Chernikov } 20639f7d47b0SAlexander V. Chernikov 20649490a627SAlexander V. Chernikov /* Reference found table and save kidx */ 20659490a627SAlexander V. Chernikov tc->no.refcnt++; 20669490a627SAlexander V. Chernikov pidx->kidx = tc->no.kidx; 20679490a627SAlexander V. Chernikov pidx++; 20689490a627SAlexander V. Chernikov continue; 20699490a627SAlexander V. Chernikov } 20709490a627SAlexander V. Chernikov 20719490a627SAlexander V. Chernikov /* Table not found. Allocate new index and save for later */ 2072ac35ff17SAlexander V. Chernikov if (ipfw_objhash_alloc_idx(ni, &pidx->kidx) != 0) { 2073ac35ff17SAlexander V. Chernikov printf("Unable to allocate table %s index in set %u." 2074b074b7bbSAlexander V. Chernikov " Consider increasing net.inet.ip.fw.tables_max", 2075ac35ff17SAlexander V. Chernikov "", ti->set); 20769490a627SAlexander V. Chernikov error = EBUSY; 20779490a627SAlexander V. Chernikov break; 2078b074b7bbSAlexander V. Chernikov } 2079b074b7bbSAlexander V. Chernikov 2080b074b7bbSAlexander V. Chernikov ci->new_tables++; 20819490a627SAlexander V. Chernikov pidx->new = 1; 20829490a627SAlexander V. Chernikov pidx++; 2083b074b7bbSAlexander V. Chernikov } 2084b074b7bbSAlexander V. Chernikov 20859490a627SAlexander V. Chernikov if (error != 0) { 20869490a627SAlexander V. Chernikov /* Unref everything we have already done */ 20879490a627SAlexander V. Chernikov for (p = *oib; p < pidx; p++) { 20889490a627SAlexander V. Chernikov if (p->new != 0) { 2089ac35ff17SAlexander V. Chernikov ipfw_objhash_free_idx(ni, p->kidx); 20909490a627SAlexander V. Chernikov continue; 20919490a627SAlexander V. Chernikov } 2092b074b7bbSAlexander V. Chernikov 20939490a627SAlexander V. Chernikov /* Find & unref by existing idx */ 2094ac35ff17SAlexander V. Chernikov no = ipfw_objhash_lookup_kidx(ni, p->kidx); 20959490a627SAlexander V. Chernikov KASSERT(no != NULL, ("Ref'd table %d disappeared", 20969490a627SAlexander V. Chernikov p->kidx)); 2097b074b7bbSAlexander V. Chernikov 20989490a627SAlexander V. Chernikov no->refcnt--; 20999490a627SAlexander V. Chernikov } 21009490a627SAlexander V. Chernikov } 21019490a627SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 2102b074b7bbSAlexander V. Chernikov 21039490a627SAlexander V. Chernikov *oib = pidx; 21049490a627SAlexander V. Chernikov 21059490a627SAlexander V. Chernikov return (error); 2106b074b7bbSAlexander V. Chernikov } 2107b074b7bbSAlexander V. Chernikov 2108b074b7bbSAlexander V. Chernikov /* 2109b074b7bbSAlexander V. Chernikov * Compatibility function for old ipfw(8) binaries. 2110b074b7bbSAlexander V. Chernikov * Rewrites table kernel indices with userland ones. 2111b074b7bbSAlexander V. Chernikov * Works for \d+ talbes only (e.g. for tables, converted 2112b074b7bbSAlexander V. Chernikov * from old numbered system calls). 2113b074b7bbSAlexander V. Chernikov * 2114b074b7bbSAlexander V. Chernikov * Returns 0 on success. 2115b074b7bbSAlexander V. Chernikov * Raises error on any other tables. 2116b074b7bbSAlexander V. Chernikov */ 2117b074b7bbSAlexander V. Chernikov int 21187e767c79SAlexander V. Chernikov ipfw_rewrite_table_kidx(struct ip_fw_chain *chain, struct ip_fw_rule0 *rule) 2119b074b7bbSAlexander V. Chernikov { 21201832a7b3SAlexander V. Chernikov int cmdlen, error, l; 2121b074b7bbSAlexander V. Chernikov ipfw_insn *cmd; 21221832a7b3SAlexander V. Chernikov uint16_t kidx, uidx; 2123b074b7bbSAlexander V. Chernikov uint8_t type; 2124b074b7bbSAlexander V. Chernikov struct named_object *no; 2125b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 2126b074b7bbSAlexander V. Chernikov 2127b074b7bbSAlexander V. Chernikov ni = CHAIN_TO_NI(chain); 21281832a7b3SAlexander V. Chernikov error = 0; 2129b074b7bbSAlexander V. Chernikov 2130b074b7bbSAlexander V. Chernikov l = rule->cmd_len; 2131b074b7bbSAlexander V. Chernikov cmd = rule->cmd; 2132b074b7bbSAlexander V. Chernikov cmdlen = 0; 2133b074b7bbSAlexander V. Chernikov for ( ; l > 0 ; l -= cmdlen, cmd += cmdlen) { 2134b074b7bbSAlexander V. Chernikov cmdlen = F_LEN(cmd); 2135b074b7bbSAlexander V. Chernikov 2136b074b7bbSAlexander V. Chernikov if (classify_table_opcode(cmd, &kidx, &type) != 0) 2137b074b7bbSAlexander V. Chernikov continue; 2138b074b7bbSAlexander V. Chernikov 2139ac35ff17SAlexander V. Chernikov if ((no = ipfw_objhash_lookup_kidx(ni, kidx)) == NULL) 2140b074b7bbSAlexander V. Chernikov return (1); 2141b074b7bbSAlexander V. Chernikov 21421832a7b3SAlexander V. Chernikov uidx = no->uidx; 21431832a7b3SAlexander V. Chernikov if (no->compat == 0) { 2144b074b7bbSAlexander V. Chernikov 21451832a7b3SAlexander V. Chernikov /* 21461832a7b3SAlexander V. Chernikov * We are called via legacy opcode. 21471832a7b3SAlexander V. Chernikov * Save error and show table as fake number 21481832a7b3SAlexander V. Chernikov * not to make ipfw(8) hang. 21491832a7b3SAlexander V. Chernikov */ 21501832a7b3SAlexander V. Chernikov uidx = 65535; 21511832a7b3SAlexander V. Chernikov error = 2; 2152b074b7bbSAlexander V. Chernikov } 2153b074b7bbSAlexander V. Chernikov 21541832a7b3SAlexander V. Chernikov update_table_opcode(cmd, uidx); 21551832a7b3SAlexander V. Chernikov } 21561832a7b3SAlexander V. Chernikov 21571832a7b3SAlexander V. Chernikov return (error); 2158b074b7bbSAlexander V. Chernikov } 2159b074b7bbSAlexander V. Chernikov 2160563b5ab1SAlexander V. Chernikov /* 2161563b5ab1SAlexander V. Chernikov * Sets every table kidx in @bmask which is used in rule @rule. 2162563b5ab1SAlexander V. Chernikov * 2163563b5ab1SAlexander V. Chernikov * Returns number of newly-referenced tables. 2164563b5ab1SAlexander V. Chernikov */ 2165563b5ab1SAlexander V. Chernikov int 2166563b5ab1SAlexander V. Chernikov ipfw_mark_table_kidx(struct ip_fw_chain *chain, struct ip_fw *rule, 2167563b5ab1SAlexander V. Chernikov uint32_t *bmask) 2168563b5ab1SAlexander V. Chernikov { 2169563b5ab1SAlexander V. Chernikov int cmdlen, l, count; 2170563b5ab1SAlexander V. Chernikov ipfw_insn *cmd; 2171563b5ab1SAlexander V. Chernikov uint16_t kidx; 2172563b5ab1SAlexander V. Chernikov uint8_t type; 2173563b5ab1SAlexander V. Chernikov 2174563b5ab1SAlexander V. Chernikov l = rule->cmd_len; 2175563b5ab1SAlexander V. Chernikov cmd = rule->cmd; 2176563b5ab1SAlexander V. Chernikov cmdlen = 0; 2177563b5ab1SAlexander V. Chernikov count = 0; 2178563b5ab1SAlexander V. Chernikov for ( ; l > 0 ; l -= cmdlen, cmd += cmdlen) { 2179563b5ab1SAlexander V. Chernikov cmdlen = F_LEN(cmd); 2180563b5ab1SAlexander V. Chernikov 2181563b5ab1SAlexander V. Chernikov if (classify_table_opcode(cmd, &kidx, &type) != 0) 2182563b5ab1SAlexander V. Chernikov continue; 2183563b5ab1SAlexander V. Chernikov 2184563b5ab1SAlexander V. Chernikov if ((bmask[kidx / 32] & (1 << (kidx % 32))) == 0) 2185563b5ab1SAlexander V. Chernikov count++; 2186563b5ab1SAlexander V. Chernikov 2187563b5ab1SAlexander V. Chernikov bmask[kidx / 32] |= 1 << (kidx % 32); 2188563b5ab1SAlexander V. Chernikov } 2189563b5ab1SAlexander V. Chernikov 2190563b5ab1SAlexander V. Chernikov return (count); 2191563b5ab1SAlexander V. Chernikov } 2192563b5ab1SAlexander V. Chernikov 2193563b5ab1SAlexander V. Chernikov 2194b074b7bbSAlexander V. Chernikov 2195b074b7bbSAlexander V. Chernikov /* 2196b074b7bbSAlexander V. Chernikov * Checks is opcode is referencing table of appropriate type. 2197b074b7bbSAlexander V. Chernikov * Adds reference count for found table if true. 2198b074b7bbSAlexander V. Chernikov * Rewrites user-supplied opcode values with kernel ones. 2199b074b7bbSAlexander V. Chernikov * 2200b074b7bbSAlexander V. Chernikov * Returns 0 on success and appropriate error code otherwise. 2201b074b7bbSAlexander V. Chernikov */ 2202b074b7bbSAlexander V. Chernikov int 2203b074b7bbSAlexander V. Chernikov ipfw_rewrite_table_uidx(struct ip_fw_chain *chain, 2204b074b7bbSAlexander V. Chernikov struct rule_check_info *ci) 2205b074b7bbSAlexander V. Chernikov { 2206b074b7bbSAlexander V. Chernikov int cmdlen, error, ftype, l; 2207b074b7bbSAlexander V. Chernikov ipfw_insn *cmd; 2208b074b7bbSAlexander V. Chernikov uint16_t uidx; 2209b074b7bbSAlexander V. Chernikov uint8_t type; 2210b074b7bbSAlexander V. Chernikov struct table_config *tc; 22119f7d47b0SAlexander V. Chernikov struct table_algo *ta; 2212b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 2213b074b7bbSAlexander V. Chernikov struct named_object *no, *no_n, *no_tmp; 22149490a627SAlexander V. Chernikov struct obj_idx *p, *pidx_first, *pidx_last; 2215b074b7bbSAlexander V. Chernikov struct namedobjects_head nh; 2216b074b7bbSAlexander V. Chernikov struct tid_info ti; 2217b074b7bbSAlexander V. Chernikov 2218b074b7bbSAlexander V. Chernikov ni = CHAIN_TO_NI(chain); 2219b074b7bbSAlexander V. Chernikov 22209490a627SAlexander V. Chernikov /* Prepare queue to store configs */ 22219490a627SAlexander V. Chernikov TAILQ_INIT(&nh); 22229490a627SAlexander V. Chernikov 2223b074b7bbSAlexander V. Chernikov /* 2224b074b7bbSAlexander V. Chernikov * Prepare an array for storing opcode indices. 2225b074b7bbSAlexander V. Chernikov * Use stack allocation by default. 2226b074b7bbSAlexander V. Chernikov */ 2227b074b7bbSAlexander V. Chernikov if (ci->table_opcodes <= (sizeof(ci->obuf)/sizeof(ci->obuf[0]))) { 2228b074b7bbSAlexander V. Chernikov /* Stack */ 22299490a627SAlexander V. Chernikov pidx_first = ci->obuf; 2230b074b7bbSAlexander V. Chernikov } else 22319490a627SAlexander V. Chernikov pidx_first = malloc(ci->table_opcodes * sizeof(struct obj_idx), 2232b074b7bbSAlexander V. Chernikov M_IPFW, M_WAITOK | M_ZERO); 2233b074b7bbSAlexander V. Chernikov 22349490a627SAlexander V. Chernikov pidx_last = pidx_first; 2235b074b7bbSAlexander V. Chernikov error = 0; 2236b074b7bbSAlexander V. Chernikov 2237b074b7bbSAlexander V. Chernikov type = 0; 2238b074b7bbSAlexander V. Chernikov ftype = 0; 2239b074b7bbSAlexander V. Chernikov 2240b074b7bbSAlexander V. Chernikov memset(&ti, 0, sizeof(ti)); 22411832a7b3SAlexander V. Chernikov 22421832a7b3SAlexander V. Chernikov /* 22431832a7b3SAlexander V. Chernikov * Use default set for looking up tables (old way) or 22441832a7b3SAlexander V. Chernikov * use set rule is assigned to (new way). 22451832a7b3SAlexander V. Chernikov */ 22461832a7b3SAlexander V. Chernikov ti.set = (V_fw_tables_sets != 0) ? ci->krule->set : 0; 22476c2997ffSAlexander V. Chernikov if (ci->ctlv != NULL) { 22486c2997ffSAlexander V. Chernikov ti.tlvs = (void *)(ci->ctlv + 1); 22496c2997ffSAlexander V. Chernikov ti.tlen = ci->ctlv->head.length - sizeof(ipfw_obj_ctlv); 22506c2997ffSAlexander V. Chernikov } 2251b074b7bbSAlexander V. Chernikov 2252b074b7bbSAlexander V. Chernikov /* 22539490a627SAlexander V. Chernikov * Stage 1: reference existing tables, determine number 22549490a627SAlexander V. Chernikov * of tables we need to allocate and allocate indexes for each. 2255b074b7bbSAlexander V. Chernikov */ 22569490a627SAlexander V. Chernikov error = bind_table_rule(chain, ci->krule, ci, &pidx_last, &ti); 2257b074b7bbSAlexander V. Chernikov 2258b074b7bbSAlexander V. Chernikov if (error != 0) { 22599490a627SAlexander V. Chernikov if (pidx_first != ci->obuf) 22609490a627SAlexander V. Chernikov free(pidx_first, M_IPFW); 2261b074b7bbSAlexander V. Chernikov 2262b074b7bbSAlexander V. Chernikov return (error); 2263b074b7bbSAlexander V. Chernikov } 2264b074b7bbSAlexander V. Chernikov 2265b074b7bbSAlexander V. Chernikov /* 2266b074b7bbSAlexander V. Chernikov * Stage 2: allocate table configs for every non-existent table 2267b074b7bbSAlexander V. Chernikov */ 2268b074b7bbSAlexander V. Chernikov 22699f7d47b0SAlexander V. Chernikov if (ci->new_tables > 0) { 22709490a627SAlexander V. Chernikov for (p = pidx_first; p < pidx_last; p++) { 2271b074b7bbSAlexander V. Chernikov if (p->new == 0) 2272b074b7bbSAlexander V. Chernikov continue; 2273b074b7bbSAlexander V. Chernikov 2274b074b7bbSAlexander V. Chernikov ti.uidx = p->uidx; 2275b074b7bbSAlexander V. Chernikov ti.type = p->type; 22769f7d47b0SAlexander V. Chernikov ti.atype = 0; 2277b074b7bbSAlexander V. Chernikov 22789490a627SAlexander V. Chernikov ta = find_table_algo(CHAIN_TO_TCFG(chain), &ti, NULL); 22799f7d47b0SAlexander V. Chernikov if (ta == NULL) { 22809f7d47b0SAlexander V. Chernikov error = ENOTSUP; 22819f7d47b0SAlexander V. Chernikov goto free; 22829f7d47b0SAlexander V. Chernikov } 228368394ec8SAlexander V. Chernikov tc = alloc_table_config(chain, &ti, ta, NULL, 228468394ec8SAlexander V. Chernikov IPFW_VTYPE_U32); 2285b074b7bbSAlexander V. Chernikov 2286b074b7bbSAlexander V. Chernikov if (tc == NULL) { 2287b074b7bbSAlexander V. Chernikov error = ENOMEM; 2288b074b7bbSAlexander V. Chernikov goto free; 2289b074b7bbSAlexander V. Chernikov } 2290b074b7bbSAlexander V. Chernikov 2291b074b7bbSAlexander V. Chernikov tc->no.kidx = p->kidx; 2292b074b7bbSAlexander V. Chernikov tc->no.refcnt = 1; 2293b074b7bbSAlexander V. Chernikov 2294b074b7bbSAlexander V. Chernikov /* Add to list */ 2295b074b7bbSAlexander V. Chernikov TAILQ_INSERT_TAIL(&nh, &tc->no, nn_next); 2296b074b7bbSAlexander V. Chernikov } 2297b074b7bbSAlexander V. Chernikov 2298b074b7bbSAlexander V. Chernikov /* 2299b074b7bbSAlexander V. Chernikov * Stage 2.1: Check if we're going to create 2 tables 2300b074b7bbSAlexander V. Chernikov * with the same name, but different table types. 2301b074b7bbSAlexander V. Chernikov */ 2302b074b7bbSAlexander V. Chernikov TAILQ_FOREACH(no, &nh, nn_next) { 2303b074b7bbSAlexander V. Chernikov TAILQ_FOREACH(no_tmp, &nh, nn_next) { 23049490a627SAlexander V. Chernikov if (ipfw_objhash_same_name(ni, no, no_tmp) == 0) 2305b074b7bbSAlexander V. Chernikov continue; 2306b074b7bbSAlexander V. Chernikov if (no->type != no_tmp->type) { 2307b074b7bbSAlexander V. Chernikov error = EINVAL; 2308b074b7bbSAlexander V. Chernikov goto free; 2309b074b7bbSAlexander V. Chernikov } 2310b074b7bbSAlexander V. Chernikov } 2311b074b7bbSAlexander V. Chernikov } 23129f7d47b0SAlexander V. Chernikov } 2313b074b7bbSAlexander V. Chernikov 23149f7d47b0SAlexander V. Chernikov IPFW_UH_WLOCK(chain); 23159f7d47b0SAlexander V. Chernikov 23169f7d47b0SAlexander V. Chernikov if (ci->new_tables > 0) { 2317b074b7bbSAlexander V. Chernikov /* 2318b074b7bbSAlexander V. Chernikov * Stage 3: link & reference new table configs 2319b074b7bbSAlexander V. Chernikov */ 2320b074b7bbSAlexander V. Chernikov 2321b074b7bbSAlexander V. Chernikov 2322b074b7bbSAlexander V. Chernikov /* 2323b074b7bbSAlexander V. Chernikov * Step 3.1: Check if some tables we need to create have been 2324b074b7bbSAlexander V. Chernikov * already created with different table type. 2325b074b7bbSAlexander V. Chernikov */ 2326b074b7bbSAlexander V. Chernikov 2327b074b7bbSAlexander V. Chernikov error = 0; 2328b074b7bbSAlexander V. Chernikov TAILQ_FOREACH_SAFE(no, &nh, nn_next, no_tmp) { 2329b074b7bbSAlexander V. Chernikov no_n = ipfw_objhash_lookup_name(ni, no->set, no->name); 2330b074b7bbSAlexander V. Chernikov if (no_n == NULL) 2331b074b7bbSAlexander V. Chernikov continue; 2332b074b7bbSAlexander V. Chernikov 2333b074b7bbSAlexander V. Chernikov if (no_n->type != no->type) { 2334b074b7bbSAlexander V. Chernikov error = EINVAL; 2335b074b7bbSAlexander V. Chernikov break; 2336b074b7bbSAlexander V. Chernikov } 2337b074b7bbSAlexander V. Chernikov 2338b074b7bbSAlexander V. Chernikov } 2339b074b7bbSAlexander V. Chernikov 2340b074b7bbSAlexander V. Chernikov if (error != 0) { 2341b074b7bbSAlexander V. Chernikov /* 2342b074b7bbSAlexander V. Chernikov * Someone has allocated table with different table type. 2343b074b7bbSAlexander V. Chernikov * We have to rollback everything. 2344b074b7bbSAlexander V. Chernikov */ 2345b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(chain); 2346b074b7bbSAlexander V. Chernikov goto free; 2347b074b7bbSAlexander V. Chernikov } 2348b074b7bbSAlexander V. Chernikov 2349b074b7bbSAlexander V. Chernikov /* 23509f7d47b0SAlexander V. Chernikov * Attach new tables. 23519f7d47b0SAlexander V. Chernikov * We need to set table pointers for each new table, 2352b074b7bbSAlexander V. Chernikov * so we have to acquire main WLOCK. 2353b074b7bbSAlexander V. Chernikov */ 2354b074b7bbSAlexander V. Chernikov IPFW_WLOCK(chain); 2355b074b7bbSAlexander V. Chernikov TAILQ_FOREACH_SAFE(no, &nh, nn_next, no_tmp) { 2356b074b7bbSAlexander V. Chernikov no_n = ipfw_objhash_lookup_name(ni, no->set, no->name); 2357b074b7bbSAlexander V. Chernikov 23589490a627SAlexander V. Chernikov if (no_n == NULL) { 23599490a627SAlexander V. Chernikov /* New table. Attach to runtime hash */ 23609490a627SAlexander V. Chernikov TAILQ_REMOVE(&nh, no, nn_next); 23619490a627SAlexander V. Chernikov link_table(chain, (struct table_config *)no); 2362b074b7bbSAlexander V. Chernikov continue; 2363b074b7bbSAlexander V. Chernikov } 2364b074b7bbSAlexander V. Chernikov 23659490a627SAlexander V. Chernikov /* 23669490a627SAlexander V. Chernikov * Newly-allocated table with the same type. 23679490a627SAlexander V. Chernikov * Reference it and update out @pidx array 23689490a627SAlexander V. Chernikov * rewrite info. 23699490a627SAlexander V. Chernikov */ 23709490a627SAlexander V. Chernikov no_n->refcnt++; 23719490a627SAlexander V. Chernikov /* Keep oib array in sync: update kidx */ 23729490a627SAlexander V. Chernikov for (p = pidx_first; p < pidx_last; p++) { 23739490a627SAlexander V. Chernikov if (p->kidx != no->kidx) 23749490a627SAlexander V. Chernikov continue; 23759490a627SAlexander V. Chernikov /* Update kidx */ 23769490a627SAlexander V. Chernikov p->kidx = no_n->kidx; 23779490a627SAlexander V. Chernikov break; 23789490a627SAlexander V. Chernikov } 2379b074b7bbSAlexander V. Chernikov } 2380b074b7bbSAlexander V. Chernikov IPFW_WUNLOCK(chain); 23819f7d47b0SAlexander V. Chernikov } 2382b074b7bbSAlexander V. Chernikov 2383b074b7bbSAlexander V. Chernikov /* Perform rule rewrite */ 2384b074b7bbSAlexander V. Chernikov l = ci->krule->cmd_len; 2385b074b7bbSAlexander V. Chernikov cmd = ci->krule->cmd; 2386b074b7bbSAlexander V. Chernikov cmdlen = 0; 23879490a627SAlexander V. Chernikov p = pidx_first; 2388b074b7bbSAlexander V. Chernikov for ( ; l > 0 ; l -= cmdlen, cmd += cmdlen) { 2389b074b7bbSAlexander V. Chernikov cmdlen = F_LEN(cmd); 2390b074b7bbSAlexander V. Chernikov 2391b074b7bbSAlexander V. Chernikov if (classify_table_opcode(cmd, &uidx, &type) != 0) 2392b074b7bbSAlexander V. Chernikov continue; 23939490a627SAlexander V. Chernikov update_table_opcode(cmd, p->kidx); 23949490a627SAlexander V. Chernikov p++; 2395b074b7bbSAlexander V. Chernikov } 2396b074b7bbSAlexander V. Chernikov 2397b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(chain); 2398b074b7bbSAlexander V. Chernikov 2399b074b7bbSAlexander V. Chernikov error = 0; 2400b074b7bbSAlexander V. Chernikov 2401b074b7bbSAlexander V. Chernikov /* 2402b074b7bbSAlexander V. Chernikov * Stage 4: free resources 2403b074b7bbSAlexander V. Chernikov */ 2404b074b7bbSAlexander V. Chernikov free: 24059490a627SAlexander V. Chernikov if (!TAILQ_EMPTY(&nh)) { 24069490a627SAlexander V. Chernikov /* Free indexes first */ 24079490a627SAlexander V. Chernikov IPFW_UH_WLOCK(chain); 24089490a627SAlexander V. Chernikov TAILQ_FOREACH_SAFE(no, &nh, nn_next, no_tmp) { 2409ac35ff17SAlexander V. Chernikov ipfw_objhash_free_idx(ni, no->kidx); 24109490a627SAlexander V. Chernikov } 24119490a627SAlexander V. Chernikov IPFW_UH_WUNLOCK(chain); 24129490a627SAlexander V. Chernikov /* Free configs */ 2413b074b7bbSAlexander V. Chernikov TAILQ_FOREACH_SAFE(no, &nh, nn_next, no_tmp) 2414b074b7bbSAlexander V. Chernikov free_table_config(ni, tc); 24159490a627SAlexander V. Chernikov } 2416b074b7bbSAlexander V. Chernikov 24179490a627SAlexander V. Chernikov if (pidx_first != ci->obuf) 24189490a627SAlexander V. Chernikov free(pidx_first, M_IPFW); 2419b074b7bbSAlexander V. Chernikov 2420b074b7bbSAlexander V. Chernikov return (error); 2421b074b7bbSAlexander V. Chernikov } 2422b074b7bbSAlexander V. Chernikov 2423b074b7bbSAlexander V. Chernikov /* 2424b074b7bbSAlexander V. Chernikov * Remove references from every table used in @rule. 2425b074b7bbSAlexander V. Chernikov */ 2426b074b7bbSAlexander V. Chernikov void 2427b074b7bbSAlexander V. Chernikov ipfw_unbind_table_rule(struct ip_fw_chain *chain, struct ip_fw *rule) 2428b074b7bbSAlexander V. Chernikov { 2429b074b7bbSAlexander V. Chernikov int cmdlen, l; 2430b074b7bbSAlexander V. Chernikov ipfw_insn *cmd; 2431b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 2432b074b7bbSAlexander V. Chernikov struct named_object *no; 2433b074b7bbSAlexander V. Chernikov uint16_t kidx; 2434b074b7bbSAlexander V. Chernikov uint8_t type; 2435b074b7bbSAlexander V. Chernikov 2436b074b7bbSAlexander V. Chernikov ni = CHAIN_TO_NI(chain); 2437b074b7bbSAlexander V. Chernikov 2438b074b7bbSAlexander V. Chernikov l = rule->cmd_len; 2439b074b7bbSAlexander V. Chernikov cmd = rule->cmd; 2440b074b7bbSAlexander V. Chernikov cmdlen = 0; 2441b074b7bbSAlexander V. Chernikov for ( ; l > 0 ; l -= cmdlen, cmd += cmdlen) { 2442b074b7bbSAlexander V. Chernikov cmdlen = F_LEN(cmd); 2443b074b7bbSAlexander V. Chernikov 2444b074b7bbSAlexander V. Chernikov if (classify_table_opcode(cmd, &kidx, &type) != 0) 2445b074b7bbSAlexander V. Chernikov continue; 2446b074b7bbSAlexander V. Chernikov 2447ac35ff17SAlexander V. Chernikov no = ipfw_objhash_lookup_kidx(ni, kidx); 2448b074b7bbSAlexander V. Chernikov 2449b074b7bbSAlexander V. Chernikov KASSERT(no != NULL, ("table id %d not found", kidx)); 2450b074b7bbSAlexander V. Chernikov KASSERT(no->type == type, ("wrong type %d (%d) for table id %d", 2451b074b7bbSAlexander V. Chernikov no->type, type, kidx)); 2452b074b7bbSAlexander V. Chernikov KASSERT(no->refcnt > 0, ("refcount for table %d is %d", 2453b074b7bbSAlexander V. Chernikov kidx, no->refcnt)); 2454b074b7bbSAlexander V. Chernikov 2455b074b7bbSAlexander V. Chernikov no->refcnt--; 2456b074b7bbSAlexander V. Chernikov } 2457b074b7bbSAlexander V. Chernikov } 2458b074b7bbSAlexander V. Chernikov 2459b074b7bbSAlexander V. Chernikov 2460b074b7bbSAlexander V. Chernikov /* 2461b074b7bbSAlexander V. Chernikov * Removes table bindings for every rule in rule chain @head. 2462b074b7bbSAlexander V. Chernikov */ 2463b074b7bbSAlexander V. Chernikov void 2464b074b7bbSAlexander V. Chernikov ipfw_unbind_table_list(struct ip_fw_chain *chain, struct ip_fw *head) 2465b074b7bbSAlexander V. Chernikov { 2466b074b7bbSAlexander V. Chernikov struct ip_fw *rule; 2467b074b7bbSAlexander V. Chernikov 2468b074b7bbSAlexander V. Chernikov while ((rule = head) != NULL) { 2469b074b7bbSAlexander V. Chernikov head = head->x_next; 2470b074b7bbSAlexander V. Chernikov ipfw_unbind_table_rule(chain, rule); 2471b074b7bbSAlexander V. Chernikov } 2472b074b7bbSAlexander V. Chernikov } 2473b074b7bbSAlexander V. Chernikov 2474b074b7bbSAlexander V. Chernikov 24753b3a8eb9SGleb Smirnoff /* end of file */ 2476