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; 142db785d31SAlexander V. Chernikov uint64_t aflags; 1439f7d47b0SAlexander V. Chernikov char ta_buf[128]; 1443b3a8eb9SGleb Smirnoff 1459f7d47b0SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 1469f7d47b0SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 1479f7d47b0SAlexander V. Chernikov 1489f7d47b0SAlexander V. Chernikov /* 1499f7d47b0SAlexander V. Chernikov * Find and reference existing table. 1509f7d47b0SAlexander V. Chernikov */ 1519f7d47b0SAlexander V. Chernikov ta = NULL; 1529f7d47b0SAlexander V. Chernikov if ((tc = find_table(ni, ti)) != NULL) { 1539f7d47b0SAlexander V. Chernikov /* check table type */ 1549f7d47b0SAlexander V. Chernikov if (tc->no.type != ti->type) { 1559f7d47b0SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1563b3a8eb9SGleb Smirnoff return (EINVAL); 1573b3a8eb9SGleb Smirnoff } 1583b3a8eb9SGleb Smirnoff 1599f7d47b0SAlexander V. Chernikov /* Reference and unlock */ 1609f7d47b0SAlexander V. Chernikov tc->no.refcnt++; 1619f7d47b0SAlexander V. Chernikov ta = tc->ta; 162db785d31SAlexander V. Chernikov aflags = tc->flags; 1639f7d47b0SAlexander V. Chernikov } 1649f7d47b0SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1653b3a8eb9SGleb Smirnoff 166ac35ff17SAlexander V. Chernikov if (tc == NULL) { 167db785d31SAlexander V. Chernikov /* Compability mode: create new table for old clients */ 168db785d31SAlexander V. Chernikov if ((tei->flags & TEI_FLAGS_COMPAT) == 0) 169db785d31SAlexander V. Chernikov return (ESRCH); 1703b3a8eb9SGleb Smirnoff 171db785d31SAlexander V. Chernikov error = create_table_internal(ch, ti, NULL, IPFW_VTYPE_U32); 172db785d31SAlexander V. Chernikov 173db785d31SAlexander V. Chernikov if (error != 0) 174db785d31SAlexander V. Chernikov return (error); 175db785d31SAlexander V. Chernikov 176db785d31SAlexander V. Chernikov /* Let's try to find & reference another time */ 177db785d31SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 178db785d31SAlexander V. Chernikov if ((tc = find_table(ni, ti)) == NULL) { 179db785d31SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 180db785d31SAlexander V. Chernikov return (EINVAL); 181db785d31SAlexander V. Chernikov } 182db785d31SAlexander V. Chernikov 183db785d31SAlexander V. Chernikov if (tc->no.type != ti->type) { 184db785d31SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 185db785d31SAlexander V. Chernikov return (EINVAL); 186db785d31SAlexander V. Chernikov } 187db785d31SAlexander V. Chernikov 188db785d31SAlexander V. Chernikov /* Reference and unlock */ 189db785d31SAlexander V. Chernikov tc->no.refcnt++; 190db785d31SAlexander V. Chernikov ta = tc->ta; 191db785d31SAlexander V. Chernikov aflags = tc->flags; 192db785d31SAlexander V. Chernikov 193db785d31SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 194db785d31SAlexander V. Chernikov } 195db785d31SAlexander V. Chernikov 196db785d31SAlexander V. Chernikov if (aflags != 0) { 197db785d31SAlexander V. Chernikov 198db785d31SAlexander V. Chernikov /* 199db785d31SAlexander V. Chernikov * Previous add/delete call returned non-zero state. 200db785d31SAlexander V. Chernikov * Run appropriate handler. 201db785d31SAlexander V. Chernikov */ 202db785d31SAlexander V. Chernikov error = modify_table(ch, tc, ta, &ta_buf, aflags); 203db785d31SAlexander V. Chernikov if (error != 0) 204db785d31SAlexander V. Chernikov return (error); 2059f7d47b0SAlexander V. Chernikov } 2063b3a8eb9SGleb Smirnoff 2079f7d47b0SAlexander V. Chernikov /* Prepare record (allocate memory) */ 2089f7d47b0SAlexander V. Chernikov memset(&ta_buf, 0, sizeof(ta_buf)); 20968394ec8SAlexander V. Chernikov error = ta->prepare_add(ch, tei, &ta_buf); 210db785d31SAlexander V. Chernikov if (error != 0) 2119f7d47b0SAlexander V. Chernikov return (error); 2123b3a8eb9SGleb Smirnoff 213b074b7bbSAlexander V. Chernikov IPFW_UH_WLOCK(ch); 2143b3a8eb9SGleb Smirnoff 215b074b7bbSAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 2163b3a8eb9SGleb Smirnoff 2179f7d47b0SAlexander V. Chernikov /* Drop reference we've used in first search */ 2189f7d47b0SAlexander V. Chernikov tc->no.refcnt--; 219db785d31SAlexander V. Chernikov /* Update aflags since it can be changed after previous read */ 220db785d31SAlexander V. Chernikov aflags = tc->flags; 221b074b7bbSAlexander V. Chernikov 222b074b7bbSAlexander V. Chernikov /* We've got valid table in @tc. Let's add data */ 2239f7d47b0SAlexander V. Chernikov kidx = tc->no.kidx; 2249f7d47b0SAlexander V. Chernikov ta = tc->ta; 2259f7d47b0SAlexander V. Chernikov 226b074b7bbSAlexander V. Chernikov IPFW_WLOCK(ch); 227b074b7bbSAlexander V. Chernikov 228db785d31SAlexander V. Chernikov error = ta->add(tc->astate, KIDX_TO_TI(ch, kidx), tei, &ta_buf, &aflags); 2293b3a8eb9SGleb Smirnoff 2303b3a8eb9SGleb Smirnoff IPFW_WUNLOCK(ch); 2319f7d47b0SAlexander V. Chernikov 232ac35ff17SAlexander V. Chernikov /* Update number of records. */ 233ac35ff17SAlexander V. Chernikov if (error == 0 && (tei->flags & TEI_FLAGS_UPDATED) == 0) 2349f7d47b0SAlexander V. Chernikov tc->count++; 2359f7d47b0SAlexander V. Chernikov 236db785d31SAlexander V. Chernikov tc->flags = aflags; 237db785d31SAlexander V. Chernikov 238b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 239b074b7bbSAlexander V. Chernikov 240ac35ff17SAlexander V. Chernikov /* Run cleaning callback anyway */ 24168394ec8SAlexander V. Chernikov ta->flush_entry(ch, tei, &ta_buf); 242b074b7bbSAlexander V. Chernikov 2439f7d47b0SAlexander V. Chernikov return (error); 2443b3a8eb9SGleb Smirnoff } 2453b3a8eb9SGleb Smirnoff 2463b3a8eb9SGleb Smirnoff int 2471832a7b3SAlexander V. Chernikov del_table_entry(struct ip_fw_chain *ch, struct tid_info *ti, 248b074b7bbSAlexander V. Chernikov struct tentry_info *tei) 2493b3a8eb9SGleb Smirnoff { 250b074b7bbSAlexander V. Chernikov struct table_config *tc; 2519f7d47b0SAlexander V. Chernikov struct table_algo *ta; 252b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 253b074b7bbSAlexander V. Chernikov uint16_t kidx; 2549f7d47b0SAlexander V. Chernikov int error; 255db785d31SAlexander V. Chernikov uint64_t aflags; 2569f7d47b0SAlexander V. Chernikov char ta_buf[128]; 2573b3a8eb9SGleb Smirnoff 2589f7d47b0SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 259b074b7bbSAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 260b074b7bbSAlexander V. Chernikov if ((tc = find_table(ni, ti)) == NULL) { 2619f7d47b0SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 2623b3a8eb9SGleb Smirnoff return (ESRCH); 2633b3a8eb9SGleb Smirnoff } 2643b3a8eb9SGleb Smirnoff 265b074b7bbSAlexander V. Chernikov if (tc->no.type != ti->type) { 2669f7d47b0SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 2673b3a8eb9SGleb Smirnoff return (EINVAL); 2683b3a8eb9SGleb Smirnoff } 2699f7d47b0SAlexander V. Chernikov 270db785d31SAlexander V. Chernikov aflags = tc->flags; 2719f7d47b0SAlexander V. Chernikov ta = tc->ta; 2729f7d47b0SAlexander V. Chernikov 273db785d31SAlexander V. Chernikov if (aflags != 0) { 274db785d31SAlexander V. Chernikov 275db785d31SAlexander V. Chernikov /* 276db785d31SAlexander V. Chernikov * Give the chance to algo to shrink its state. 277db785d31SAlexander V. Chernikov */ 278db785d31SAlexander V. Chernikov tc->no.refcnt++; 279db785d31SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 280db785d31SAlexander V. Chernikov memset(&ta_buf, 0, sizeof(ta_buf)); 281db785d31SAlexander V. Chernikov 282db785d31SAlexander V. Chernikov error = modify_table(ch, tc, ta, &ta_buf, aflags); 283db785d31SAlexander V. Chernikov 284db785d31SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 285db785d31SAlexander V. Chernikov tc->no.refcnt--; 286db785d31SAlexander V. Chernikov aflags = tc->flags; 287db785d31SAlexander V. Chernikov 288db785d31SAlexander V. Chernikov if (error != 0) { 289db785d31SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 290db785d31SAlexander V. Chernikov return (error); 291db785d31SAlexander V. Chernikov } 292db785d31SAlexander V. Chernikov } 293db785d31SAlexander V. Chernikov 294db785d31SAlexander V. Chernikov /* 295db785d31SAlexander V. Chernikov * We assume ta_buf size is enough for storing 296db785d31SAlexander V. Chernikov * prepare_del() key, so we're running under UH_LOCK here. 297db785d31SAlexander V. Chernikov */ 2989f7d47b0SAlexander V. Chernikov memset(&ta_buf, 0, sizeof(ta_buf)); 29968394ec8SAlexander V. Chernikov if ((error = ta->prepare_del(ch, tei, &ta_buf)) != 0) { 3009f7d47b0SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 3019f7d47b0SAlexander V. Chernikov return (error); 3029f7d47b0SAlexander V. Chernikov } 3039f7d47b0SAlexander V. Chernikov 304b074b7bbSAlexander V. Chernikov kidx = tc->no.kidx; 305b074b7bbSAlexander V. Chernikov 306b074b7bbSAlexander V. Chernikov IPFW_WLOCK(ch); 307db785d31SAlexander V. Chernikov error = ta->del(tc->astate, KIDX_TO_TI(ch, kidx), tei, &ta_buf,&aflags); 3083b3a8eb9SGleb Smirnoff IPFW_WUNLOCK(ch); 3093b3a8eb9SGleb Smirnoff 3109f7d47b0SAlexander V. Chernikov if (error == 0) 3119f7d47b0SAlexander V. Chernikov tc->count--; 312db785d31SAlexander V. Chernikov tc->flags = aflags; 313b074b7bbSAlexander V. Chernikov 3149f7d47b0SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 3153b3a8eb9SGleb Smirnoff 31668394ec8SAlexander V. Chernikov ta->flush_entry(ch, tei, &ta_buf); 317ac35ff17SAlexander V. Chernikov 318ac35ff17SAlexander V. Chernikov return (error); 319ac35ff17SAlexander V. Chernikov } 320ac35ff17SAlexander V. Chernikov 321db785d31SAlexander V. Chernikov /* 322db785d31SAlexander V. Chernikov * Runs callbacks to modify algo state (typically, table resize). 323db785d31SAlexander V. Chernikov * 324db785d31SAlexander V. Chernikov * Callbacks order: 325db785d31SAlexander V. Chernikov * 1) alloc_modify (no locks, M_WAITOK) - alloc new state based on @pflags. 326db785d31SAlexander V. Chernikov * 2) prepare_modifyt (UH_WLOCK) - copy old data into new storage 327db785d31SAlexander V. Chernikov * 3) modify (UH_WLOCK + WLOCK) - switch pointers 328db785d31SAlexander V. Chernikov * 4) flush_modify (no locks) - free state, if needed 329db785d31SAlexander V. Chernikov */ 330db785d31SAlexander V. Chernikov static int 331db785d31SAlexander V. Chernikov modify_table(struct ip_fw_chain *ch, struct table_config *tc, 332db785d31SAlexander V. Chernikov struct table_algo *ta, void *ta_buf, uint64_t pflags) 333db785d31SAlexander V. Chernikov { 334db785d31SAlexander V. Chernikov struct table_info *ti; 335db785d31SAlexander V. Chernikov int error; 336db785d31SAlexander V. Chernikov 337db785d31SAlexander V. Chernikov error = ta->prepare_mod(ta_buf, &pflags); 338db785d31SAlexander V. Chernikov if (error != 0) 339db785d31SAlexander V. Chernikov return (error); 340db785d31SAlexander V. Chernikov 341db785d31SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 342db785d31SAlexander V. Chernikov ti = KIDX_TO_TI(ch, tc->no.kidx); 343db785d31SAlexander V. Chernikov 34468394ec8SAlexander V. Chernikov error = ta->fill_mod(tc->astate, ti, ta_buf, &pflags); 345db785d31SAlexander V. Chernikov 346db785d31SAlexander V. Chernikov /* 347db785d31SAlexander V. Chernikov * prepare_mofify may return zero in @pflags to 348db785d31SAlexander V. Chernikov * indicate that modifications are not unnesessary. 349db785d31SAlexander V. Chernikov */ 350db785d31SAlexander V. Chernikov 351db785d31SAlexander V. Chernikov if (error == 0 && pflags != 0) { 352db785d31SAlexander V. Chernikov /* Do actual modification */ 353db785d31SAlexander V. Chernikov IPFW_WLOCK(ch); 35468394ec8SAlexander V. Chernikov ta->modify(tc->astate, ti, ta_buf, pflags); 355db785d31SAlexander V. Chernikov IPFW_WUNLOCK(ch); 356db785d31SAlexander V. Chernikov } 357db785d31SAlexander V. Chernikov 358db785d31SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 359db785d31SAlexander V. Chernikov 360db785d31SAlexander V. Chernikov ta->flush_mod(ta_buf); 361db785d31SAlexander V. Chernikov 362db785d31SAlexander V. Chernikov return (error); 363db785d31SAlexander V. Chernikov } 364db785d31SAlexander V. Chernikov 365ac35ff17SAlexander V. Chernikov int 366db785d31SAlexander V. Chernikov ipfw_manage_table_ent(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 367ac35ff17SAlexander V. Chernikov struct sockopt_data *sd) 368ac35ff17SAlexander V. Chernikov { 369ac35ff17SAlexander V. Chernikov int error; 370ac35ff17SAlexander V. Chernikov 371ac35ff17SAlexander V. Chernikov switch (op3->version) { 372ac35ff17SAlexander V. Chernikov case 0: 373db785d31SAlexander V. Chernikov error = ipfw_manage_table_ent_v0(ch, op3, sd); 374ac35ff17SAlexander V. Chernikov break; 375ac35ff17SAlexander V. Chernikov case 1: 376db785d31SAlexander V. Chernikov error = ipfw_manage_table_ent_v1(ch, op3, sd); 377ac35ff17SAlexander V. Chernikov break; 378ac35ff17SAlexander V. Chernikov default: 379ac35ff17SAlexander V. Chernikov error = ENOTSUP; 380ac35ff17SAlexander V. Chernikov } 381ac35ff17SAlexander V. Chernikov 382ac35ff17SAlexander V. Chernikov return (error); 383ac35ff17SAlexander V. Chernikov } 384ac35ff17SAlexander V. Chernikov 385ac35ff17SAlexander V. Chernikov /* 386ac35ff17SAlexander V. Chernikov * Adds or deletes record in table. 387ac35ff17SAlexander V. Chernikov * Data layout (v0): 388ac35ff17SAlexander V. Chernikov * Request: [ ip_fw3_opheader ipfw_table_xentry ] 389ac35ff17SAlexander V. Chernikov * 390ac35ff17SAlexander V. Chernikov * Returns 0 on success 391ac35ff17SAlexander V. Chernikov */ 392ac35ff17SAlexander V. Chernikov static int 393db785d31SAlexander V. Chernikov ipfw_manage_table_ent_v0(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 394ac35ff17SAlexander V. Chernikov struct sockopt_data *sd) 395ac35ff17SAlexander V. Chernikov { 396ac35ff17SAlexander V. Chernikov ipfw_table_xentry *xent; 397ac35ff17SAlexander V. Chernikov struct tentry_info tei; 398ac35ff17SAlexander V. Chernikov struct tid_info ti; 399ac35ff17SAlexander V. Chernikov int error, hdrlen, read; 400ac35ff17SAlexander V. Chernikov 401ac35ff17SAlexander V. Chernikov hdrlen = offsetof(ipfw_table_xentry, k); 402ac35ff17SAlexander V. Chernikov 403ac35ff17SAlexander V. Chernikov /* Check minimum header size */ 404ac35ff17SAlexander V. Chernikov if (sd->valsize < (sizeof(*op3) + hdrlen)) 405ac35ff17SAlexander V. Chernikov return (EINVAL); 406ac35ff17SAlexander V. Chernikov 407ac35ff17SAlexander V. Chernikov read = sizeof(ip_fw3_opheader); 408ac35ff17SAlexander V. Chernikov 409ac35ff17SAlexander V. Chernikov /* Check if xentry len field is valid */ 410ac35ff17SAlexander V. Chernikov xent = (ipfw_table_xentry *)(op3 + 1); 411ac35ff17SAlexander V. Chernikov if (xent->len < hdrlen || xent->len + read > sd->valsize) 412ac35ff17SAlexander V. Chernikov return (EINVAL); 413ac35ff17SAlexander V. Chernikov 414ac35ff17SAlexander V. Chernikov memset(&tei, 0, sizeof(tei)); 415ac35ff17SAlexander V. Chernikov tei.paddr = &xent->k; 416ac35ff17SAlexander V. Chernikov tei.masklen = xent->masklen; 417ac35ff17SAlexander V. Chernikov tei.value = xent->value; 418ac35ff17SAlexander V. Chernikov /* Old requests compability */ 419db785d31SAlexander V. Chernikov tei.flags = TEI_FLAGS_COMPAT; 420ac35ff17SAlexander V. Chernikov if (xent->type == IPFW_TABLE_CIDR) { 421ac35ff17SAlexander V. Chernikov if (xent->len - hdrlen == sizeof(in_addr_t)) 422ac35ff17SAlexander V. Chernikov tei.subtype = AF_INET; 423ac35ff17SAlexander V. Chernikov else 424ac35ff17SAlexander V. Chernikov tei.subtype = AF_INET6; 425ac35ff17SAlexander V. Chernikov } 426ac35ff17SAlexander V. Chernikov 427ac35ff17SAlexander V. Chernikov memset(&ti, 0, sizeof(ti)); 428ac35ff17SAlexander V. Chernikov ti.uidx = xent->tbl; 429ac35ff17SAlexander V. Chernikov ti.type = xent->type; 430ac35ff17SAlexander V. Chernikov 431ac35ff17SAlexander V. Chernikov error = (op3->opcode == IP_FW_TABLE_XADD) ? 4321832a7b3SAlexander V. Chernikov add_table_entry(ch, &ti, &tei) : 4331832a7b3SAlexander V. Chernikov del_table_entry(ch, &ti, &tei); 434ac35ff17SAlexander V. Chernikov 435ac35ff17SAlexander V. Chernikov return (error); 436ac35ff17SAlexander V. Chernikov } 437ac35ff17SAlexander V. Chernikov 438ac35ff17SAlexander V. Chernikov /* 439ac35ff17SAlexander V. Chernikov * Adds or deletes record in table. 440ac35ff17SAlexander V. Chernikov * Data layout (v1)(current): 441db785d31SAlexander V. Chernikov * Request: [ ipfw_obj_header 442db785d31SAlexander V. Chernikov * ipfw_obj_ctlv(IPFW_TLV_TBLENT_LIST) [ ipfw_obj_tentry x N ] 443db785d31SAlexander V. Chernikov * ] 444ac35ff17SAlexander V. Chernikov * 445ac35ff17SAlexander V. Chernikov * Returns 0 on success 446ac35ff17SAlexander V. Chernikov */ 447ac35ff17SAlexander V. Chernikov static int 448db785d31SAlexander V. Chernikov ipfw_manage_table_ent_v1(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 449ac35ff17SAlexander V. Chernikov struct sockopt_data *sd) 450ac35ff17SAlexander V. Chernikov { 451ac35ff17SAlexander V. Chernikov ipfw_obj_tentry *tent; 452db785d31SAlexander V. Chernikov ipfw_obj_ctlv *ctlv; 453ac35ff17SAlexander V. Chernikov ipfw_obj_header *oh; 454ac35ff17SAlexander V. Chernikov struct tentry_info tei; 455ac35ff17SAlexander V. Chernikov struct tid_info ti; 456ac35ff17SAlexander V. Chernikov int error, read; 457ac35ff17SAlexander V. Chernikov 458ac35ff17SAlexander V. Chernikov /* Check minimum header size */ 459db785d31SAlexander V. Chernikov if (sd->valsize < (sizeof(*oh) + sizeof(*ctlv))) 460ac35ff17SAlexander V. Chernikov return (EINVAL); 461ac35ff17SAlexander V. Chernikov 462ac35ff17SAlexander V. Chernikov /* Check if passed data is too long */ 463ac35ff17SAlexander V. Chernikov if (sd->valsize != sd->kavail) 464ac35ff17SAlexander V. Chernikov return (EINVAL); 465ac35ff17SAlexander V. Chernikov 466ac35ff17SAlexander V. Chernikov oh = (ipfw_obj_header *)sd->kbuf; 467ac35ff17SAlexander V. Chernikov 468ac35ff17SAlexander V. Chernikov /* Basic length checks for TLVs */ 469ac35ff17SAlexander V. Chernikov if (oh->ntlv.head.length != sizeof(oh->ntlv)) 470ac35ff17SAlexander V. Chernikov return (EINVAL); 471ac35ff17SAlexander V. Chernikov 472ac35ff17SAlexander V. Chernikov read = sizeof(*oh); 473ac35ff17SAlexander V. Chernikov 474db785d31SAlexander V. Chernikov ctlv = (ipfw_obj_ctlv *)(oh + 1); 475db785d31SAlexander V. Chernikov if (ctlv->head.length + read != sd->valsize) 476db785d31SAlexander V. Chernikov return (EINVAL); 477db785d31SAlexander V. Chernikov 478db785d31SAlexander V. Chernikov /* 479db785d31SAlexander V. Chernikov * TODO: permit adding multiple entries for given table 480db785d31SAlexander V. Chernikov * at once 481db785d31SAlexander V. Chernikov */ 482db785d31SAlexander V. Chernikov if (ctlv->count != 1) 483db785d31SAlexander V. Chernikov return (EOPNOTSUPP); 484db785d31SAlexander V. Chernikov 485db785d31SAlexander V. Chernikov read += sizeof(*ctlv); 486db785d31SAlexander V. Chernikov 487ac35ff17SAlexander V. Chernikov /* Assume tentry may grow to support larger keys */ 488db785d31SAlexander V. Chernikov tent = (ipfw_obj_tentry *)(ctlv + 1); 489ac35ff17SAlexander V. Chernikov if (tent->head.length < sizeof(*tent) || 490ac35ff17SAlexander V. Chernikov tent->head.length + read > sd->valsize) 491ac35ff17SAlexander V. Chernikov return (EINVAL); 492ac35ff17SAlexander V. Chernikov 49381d3153dSAlexander V. Chernikov /* Convert data into kernel request objects */ 494ac35ff17SAlexander V. Chernikov memset(&tei, 0, sizeof(tei)); 495ac35ff17SAlexander V. Chernikov tei.paddr = &tent->k; 496ac35ff17SAlexander V. Chernikov tei.subtype = tent->subtype; 497ac35ff17SAlexander V. Chernikov tei.masklen = tent->masklen; 49881d3153dSAlexander V. Chernikov if (tent->head.flags & IPFW_TF_UPDATE) 499ac35ff17SAlexander V. Chernikov tei.flags |= TEI_FLAGS_UPDATE; 500ac35ff17SAlexander V. Chernikov tei.value = tent->value; 501ac35ff17SAlexander V. Chernikov 50281d3153dSAlexander V. Chernikov objheader_to_ti(oh, &ti); 503ac35ff17SAlexander V. Chernikov ti.type = oh->ntlv.type; 50481d3153dSAlexander V. Chernikov ti.uidx = tent->idx; 505ac35ff17SAlexander V. Chernikov 506ac35ff17SAlexander V. Chernikov error = (oh->opheader.opcode == IP_FW_TABLE_XADD) ? 5071832a7b3SAlexander V. Chernikov add_table_entry(ch, &ti, &tei) : 5081832a7b3SAlexander V. Chernikov del_table_entry(ch, &ti, &tei); 509ac35ff17SAlexander V. Chernikov 510ac35ff17SAlexander V. Chernikov return (error); 511ac35ff17SAlexander V. Chernikov } 512ac35ff17SAlexander V. Chernikov 51381d3153dSAlexander V. Chernikov /* 51481d3153dSAlexander V. Chernikov * Looks up an entry in given table. 51581d3153dSAlexander V. Chernikov * Data layout (v0)(current): 51681d3153dSAlexander V. Chernikov * Request: [ ipfw_obj_header ipfw_obj_tentry ] 51781d3153dSAlexander V. Chernikov * Reply: [ ipfw_obj_header ipfw_obj_tentry ] 51881d3153dSAlexander V. Chernikov * 51981d3153dSAlexander V. Chernikov * Returns 0 on success 52081d3153dSAlexander V. Chernikov */ 52181d3153dSAlexander V. Chernikov int 52281d3153dSAlexander V. Chernikov ipfw_find_table_entry(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 52381d3153dSAlexander V. Chernikov struct sockopt_data *sd) 52481d3153dSAlexander V. Chernikov { 52581d3153dSAlexander V. Chernikov ipfw_obj_tentry *tent; 52681d3153dSAlexander V. Chernikov ipfw_obj_header *oh; 52781d3153dSAlexander V. Chernikov struct tid_info ti; 52881d3153dSAlexander V. Chernikov struct table_config *tc; 52981d3153dSAlexander V. Chernikov struct table_algo *ta; 53081d3153dSAlexander V. Chernikov struct table_info *kti; 53181d3153dSAlexander V. Chernikov struct namedobj_instance *ni; 53281d3153dSAlexander V. Chernikov int error, plen; 53381d3153dSAlexander V. Chernikov void *paddr; 53481d3153dSAlexander V. Chernikov size_t sz; 53581d3153dSAlexander V. Chernikov 53681d3153dSAlexander V. Chernikov /* Check minimum header size */ 53781d3153dSAlexander V. Chernikov sz = sizeof(*oh) + sizeof(*tent); 53881d3153dSAlexander V. Chernikov if (sd->valsize != sz) 53981d3153dSAlexander V. Chernikov return (EINVAL); 54081d3153dSAlexander V. Chernikov 54181d3153dSAlexander V. Chernikov oh = (struct _ipfw_obj_header *)ipfw_get_sopt_header(sd, sz); 54281d3153dSAlexander V. Chernikov tent = (ipfw_obj_tentry *)(oh + 1); 54381d3153dSAlexander V. Chernikov 54481d3153dSAlexander V. Chernikov /* Basic length checks for TLVs */ 54581d3153dSAlexander V. Chernikov if (oh->ntlv.head.length != sizeof(oh->ntlv)) 54681d3153dSAlexander V. Chernikov return (EINVAL); 54781d3153dSAlexander V. Chernikov 54881d3153dSAlexander V. Chernikov objheader_to_ti(oh, &ti); 54981d3153dSAlexander V. Chernikov ti.type = oh->ntlv.type; 55081d3153dSAlexander V. Chernikov ti.uidx = tent->idx; 55181d3153dSAlexander V. Chernikov 55281d3153dSAlexander V. Chernikov IPFW_UH_RLOCK(ch); 55381d3153dSAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 55481d3153dSAlexander V. Chernikov 55581d3153dSAlexander V. Chernikov /* 55681d3153dSAlexander V. Chernikov * Find existing table and check its type . 55781d3153dSAlexander V. Chernikov */ 55881d3153dSAlexander V. Chernikov ta = NULL; 55981d3153dSAlexander V. Chernikov if ((tc = find_table(ni, &ti)) == NULL) { 56081d3153dSAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 56181d3153dSAlexander V. Chernikov return (ESRCH); 56281d3153dSAlexander V. Chernikov } 56381d3153dSAlexander V. Chernikov 56481d3153dSAlexander V. Chernikov /* check table type */ 56581d3153dSAlexander V. Chernikov if (tc->no.type != ti.type) { 56681d3153dSAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 56781d3153dSAlexander V. Chernikov return (EINVAL); 56881d3153dSAlexander V. Chernikov } 56981d3153dSAlexander V. Chernikov 57081d3153dSAlexander V. Chernikov /* Check lookup key for validness */ 57181d3153dSAlexander V. Chernikov plen = 0; 57281d3153dSAlexander V. Chernikov paddr = &tent->k; 57381d3153dSAlexander V. Chernikov switch (ti.type) 57481d3153dSAlexander V. Chernikov { 57581d3153dSAlexander V. Chernikov case IPFW_TABLE_CIDR: 57681d3153dSAlexander V. Chernikov if (tent->subtype == AF_INET) 57781d3153dSAlexander V. Chernikov plen = sizeof(struct in_addr); 57881d3153dSAlexander V. Chernikov else if (tent->subtype == AF_INET6) 57981d3153dSAlexander V. Chernikov plen = sizeof(struct in6_addr); 58081d3153dSAlexander V. Chernikov else { 58181d3153dSAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 58281d3153dSAlexander V. Chernikov return (EINVAL); 58381d3153dSAlexander V. Chernikov } 58481d3153dSAlexander V. Chernikov break; 58581d3153dSAlexander V. Chernikov case IPFW_TABLE_INTERFACE: 58681d3153dSAlexander V. Chernikov /* Check key first */ 58781d3153dSAlexander V. Chernikov plen = sizeof(tent->k.iface); 58881d3153dSAlexander V. Chernikov if (strnlen(tent->k.iface, plen) == plen) { 58981d3153dSAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 59081d3153dSAlexander V. Chernikov return (EINVAL); 59181d3153dSAlexander V. Chernikov } 59281d3153dSAlexander V. Chernikov 59381d3153dSAlexander V. Chernikov break; 59481d3153dSAlexander V. Chernikov default: 59581d3153dSAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 59681d3153dSAlexander V. Chernikov return (ENOTSUP); 59781d3153dSAlexander V. Chernikov } 59881d3153dSAlexander V. Chernikov kti = KIDX_TO_TI(ch, tc->no.kidx); 59981d3153dSAlexander V. Chernikov ta = tc->ta; 60081d3153dSAlexander V. Chernikov 60181d3153dSAlexander V. Chernikov error = ta->find_tentry(tc->astate, kti, paddr, plen, tent); 60281d3153dSAlexander V. Chernikov 60381d3153dSAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 60481d3153dSAlexander V. Chernikov 60581d3153dSAlexander V. Chernikov return (error); 60681d3153dSAlexander V. Chernikov } 60781d3153dSAlexander V. Chernikov 608ac35ff17SAlexander V. Chernikov int 609ac35ff17SAlexander V. Chernikov ipfw_flush_table(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 610ac35ff17SAlexander V. Chernikov struct sockopt_data *sd) 611ac35ff17SAlexander V. Chernikov { 612ac35ff17SAlexander V. Chernikov int error; 613ac35ff17SAlexander V. Chernikov struct _ipfw_obj_header *oh; 614ac35ff17SAlexander V. Chernikov struct tid_info ti; 615ac35ff17SAlexander V. Chernikov 616ac35ff17SAlexander V. Chernikov if (sd->valsize != sizeof(*oh)) 617ac35ff17SAlexander V. Chernikov return (EINVAL); 618ac35ff17SAlexander V. Chernikov 619ac35ff17SAlexander V. Chernikov oh = (struct _ipfw_obj_header *)op3; 620ac35ff17SAlexander V. Chernikov objheader_to_ti(oh, &ti); 621ac35ff17SAlexander V. Chernikov 6221832a7b3SAlexander V. Chernikov if (op3->opcode == IP_FW_TABLE_XDESTROY) 623ac35ff17SAlexander V. Chernikov error = destroy_table(ch, &ti); 6241832a7b3SAlexander V. Chernikov else if (op3->opcode == IP_FW_TABLE_XFLUSH) 625ac35ff17SAlexander V. Chernikov error = flush_table(ch, &ti); 626ac35ff17SAlexander V. Chernikov else 627ac35ff17SAlexander V. Chernikov return (ENOTSUP); 628ac35ff17SAlexander V. Chernikov 629ac35ff17SAlexander V. Chernikov return (error); 6303b3a8eb9SGleb Smirnoff } 6313b3a8eb9SGleb Smirnoff 632b074b7bbSAlexander V. Chernikov /* 6339f7d47b0SAlexander V. Chernikov * Flushes all entries in given table. 634ac35ff17SAlexander V. Chernikov * Data layout (v0)(current): 635ac35ff17SAlexander V. Chernikov * Request: [ ip_fw3_opheader ] 636ac35ff17SAlexander V. Chernikov * 637ac35ff17SAlexander V. Chernikov * Returns 0 on success 638b074b7bbSAlexander V. Chernikov */ 6391832a7b3SAlexander V. Chernikov int 640ac35ff17SAlexander V. Chernikov flush_table(struct ip_fw_chain *ch, struct tid_info *ti) 6413b3a8eb9SGleb Smirnoff { 642b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 643b074b7bbSAlexander V. Chernikov struct table_config *tc; 6449f7d47b0SAlexander V. Chernikov struct table_algo *ta; 6459f7d47b0SAlexander V. Chernikov struct table_info ti_old, ti_new, *tablestate; 6469f7d47b0SAlexander V. Chernikov void *astate_old, *astate_new; 647b074b7bbSAlexander V. Chernikov int error; 648b074b7bbSAlexander V. Chernikov uint16_t kidx; 6493b3a8eb9SGleb Smirnoff 6503b3a8eb9SGleb Smirnoff /* 6519f7d47b0SAlexander V. Chernikov * Stage 1: save table algoritm. 652b074b7bbSAlexander V. Chernikov * Reference found table to ensure it won't disappear. 6533b3a8eb9SGleb Smirnoff */ 654b074b7bbSAlexander V. Chernikov IPFW_UH_WLOCK(ch); 655b074b7bbSAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 656b074b7bbSAlexander V. Chernikov if ((tc = find_table(ni, ti)) == NULL) { 657b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 658b074b7bbSAlexander V. Chernikov return (ESRCH); 659b074b7bbSAlexander V. Chernikov } 6609f7d47b0SAlexander V. Chernikov ta = tc->ta; 661b074b7bbSAlexander V. Chernikov tc->no.refcnt++; 662b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 6633b3a8eb9SGleb Smirnoff 664b074b7bbSAlexander V. Chernikov /* 6659f7d47b0SAlexander V. Chernikov * Stage 2: allocate new table instance using same algo. 6669490a627SAlexander V. Chernikov * TODO: pass startup parametes somehow. 667b074b7bbSAlexander V. Chernikov */ 6689f7d47b0SAlexander V. Chernikov memset(&ti_new, 0, sizeof(struct table_info)); 66968394ec8SAlexander V. Chernikov if ((error = ta->init(ch, &astate_new, &ti_new, NULL)) != 0) { 670b074b7bbSAlexander V. Chernikov IPFW_UH_WLOCK(ch); 671b074b7bbSAlexander V. Chernikov tc->no.refcnt--; 672b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 673b074b7bbSAlexander V. Chernikov return (error); 674b074b7bbSAlexander V. Chernikov } 675b074b7bbSAlexander V. Chernikov 676b074b7bbSAlexander V. Chernikov /* 677b074b7bbSAlexander V. Chernikov * Stage 3: swap old state pointers with newly-allocated ones. 678b074b7bbSAlexander V. Chernikov * Decrease refcount. 679b074b7bbSAlexander V. Chernikov */ 680b074b7bbSAlexander V. Chernikov IPFW_UH_WLOCK(ch); 681b074b7bbSAlexander V. Chernikov 682b074b7bbSAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 683b074b7bbSAlexander V. Chernikov kidx = tc->no.kidx; 6849f7d47b0SAlexander V. Chernikov tablestate = (struct table_info *)ch->tablestate; 685b074b7bbSAlexander V. Chernikov 6869f7d47b0SAlexander V. Chernikov IPFW_WLOCK(ch); 6879f7d47b0SAlexander V. Chernikov ti_old = tablestate[kidx]; 6889f7d47b0SAlexander V. Chernikov tablestate[kidx] = ti_new; 6899f7d47b0SAlexander V. Chernikov IPFW_WUNLOCK(ch); 690b074b7bbSAlexander V. Chernikov 6919f7d47b0SAlexander V. Chernikov astate_old = tc->astate; 6929f7d47b0SAlexander V. Chernikov tc->astate = astate_new; 6939f7d47b0SAlexander V. Chernikov tc->ti = ti_new; 6949f7d47b0SAlexander V. Chernikov tc->count = 0; 695b074b7bbSAlexander V. Chernikov tc->no.refcnt--; 696b074b7bbSAlexander V. Chernikov 697b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 6983b3a8eb9SGleb Smirnoff 699b074b7bbSAlexander V. Chernikov /* 700b074b7bbSAlexander V. Chernikov * Stage 4: perform real flush. 701b074b7bbSAlexander V. Chernikov */ 7029f7d47b0SAlexander V. Chernikov ta->destroy(astate_old, &ti_old); 7033b3a8eb9SGleb Smirnoff 7043b3a8eb9SGleb Smirnoff return (0); 7053b3a8eb9SGleb Smirnoff } 7063b3a8eb9SGleb Smirnoff 707b074b7bbSAlexander V. Chernikov /* 7089f7d47b0SAlexander V. Chernikov * Destroys table specified by @ti. 709ac35ff17SAlexander V. Chernikov * Data layout (v0)(current): 710ac35ff17SAlexander V. Chernikov * Request: [ ip_fw3_opheader ] 711ac35ff17SAlexander V. Chernikov * 712ac35ff17SAlexander V. Chernikov * Returns 0 on success 713b074b7bbSAlexander V. Chernikov */ 714ac35ff17SAlexander V. Chernikov static int 715ac35ff17SAlexander V. Chernikov destroy_table(struct ip_fw_chain *ch, struct tid_info *ti) 716b074b7bbSAlexander V. Chernikov { 717b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 718b074b7bbSAlexander V. Chernikov struct table_config *tc; 719b074b7bbSAlexander V. Chernikov 720b074b7bbSAlexander V. Chernikov IPFW_UH_WLOCK(ch); 721b074b7bbSAlexander V. Chernikov 722b074b7bbSAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 723b074b7bbSAlexander V. Chernikov if ((tc = find_table(ni, ti)) == NULL) { 724b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 725b074b7bbSAlexander V. Chernikov return (ESRCH); 726b074b7bbSAlexander V. Chernikov } 727b074b7bbSAlexander V. Chernikov 7289f7d47b0SAlexander V. Chernikov /* Do not permit destroying referenced tables */ 7299f7d47b0SAlexander V. Chernikov if (tc->no.refcnt > 0) { 730b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 731b074b7bbSAlexander V. Chernikov return (EBUSY); 732b074b7bbSAlexander V. Chernikov } 733b074b7bbSAlexander V. Chernikov 734b074b7bbSAlexander V. Chernikov IPFW_WLOCK(ch); 735b074b7bbSAlexander V. Chernikov unlink_table(ch, tc); 736b074b7bbSAlexander V. Chernikov IPFW_WUNLOCK(ch); 737b074b7bbSAlexander V. Chernikov 738b074b7bbSAlexander V. Chernikov /* Free obj index */ 739ac35ff17SAlexander V. Chernikov if (ipfw_objhash_free_idx(ni, tc->no.kidx) != 0) 740b074b7bbSAlexander V. Chernikov printf("Error unlinking kidx %d from table %s\n", 741b074b7bbSAlexander V. Chernikov tc->no.kidx, tc->tablename); 742b074b7bbSAlexander V. Chernikov 743b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 744b074b7bbSAlexander V. Chernikov 745b074b7bbSAlexander V. Chernikov free_table_config(ni, tc); 746b074b7bbSAlexander V. Chernikov 747b074b7bbSAlexander V. Chernikov return (0); 748b074b7bbSAlexander V. Chernikov } 749b074b7bbSAlexander V. Chernikov 750b074b7bbSAlexander V. Chernikov static void 751b074b7bbSAlexander V. Chernikov destroy_table_locked(struct namedobj_instance *ni, struct named_object *no, 752b074b7bbSAlexander V. Chernikov void *arg) 753b074b7bbSAlexander V. Chernikov { 754b074b7bbSAlexander V. Chernikov 755b074b7bbSAlexander V. Chernikov unlink_table((struct ip_fw_chain *)arg, (struct table_config *)no); 756ac35ff17SAlexander V. Chernikov if (ipfw_objhash_free_idx(ni, no->kidx) != 0) 757b074b7bbSAlexander V. Chernikov printf("Error unlinking kidx %d from table %s\n", 758b074b7bbSAlexander V. Chernikov no->kidx, no->name); 759b074b7bbSAlexander V. Chernikov free_table_config(ni, (struct table_config *)no); 760b074b7bbSAlexander V. Chernikov } 761b074b7bbSAlexander V. Chernikov 7623b3a8eb9SGleb Smirnoff void 7633b3a8eb9SGleb Smirnoff ipfw_destroy_tables(struct ip_fw_chain *ch) 7643b3a8eb9SGleb Smirnoff { 7653b3a8eb9SGleb Smirnoff 766b074b7bbSAlexander V. Chernikov /* Remove all tables from working set */ 767b074b7bbSAlexander V. Chernikov IPFW_UH_WLOCK(ch); 768b074b7bbSAlexander V. Chernikov IPFW_WLOCK(ch); 769b074b7bbSAlexander V. Chernikov ipfw_objhash_foreach(CHAIN_TO_NI(ch), destroy_table_locked, ch); 770b074b7bbSAlexander V. Chernikov IPFW_WUNLOCK(ch); 771b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 7723b3a8eb9SGleb Smirnoff 7733b3a8eb9SGleb Smirnoff /* Free pointers itself */ 7749f7d47b0SAlexander V. Chernikov free(ch->tablestate, M_IPFW); 7759f7d47b0SAlexander V. Chernikov 7769f7d47b0SAlexander V. Chernikov ipfw_table_algo_destroy(ch); 777b074b7bbSAlexander V. Chernikov 778b074b7bbSAlexander V. Chernikov ipfw_objhash_destroy(CHAIN_TO_NI(ch)); 779b074b7bbSAlexander V. Chernikov free(CHAIN_TO_TCFG(ch), M_IPFW); 7803b3a8eb9SGleb Smirnoff } 7813b3a8eb9SGleb Smirnoff 7823b3a8eb9SGleb Smirnoff int 7833b3a8eb9SGleb Smirnoff ipfw_init_tables(struct ip_fw_chain *ch) 7843b3a8eb9SGleb Smirnoff { 785b074b7bbSAlexander V. Chernikov struct tables_config *tcfg; 786b074b7bbSAlexander V. Chernikov 7873b3a8eb9SGleb Smirnoff /* Allocate pointers */ 7889f7d47b0SAlexander V. Chernikov ch->tablestate = malloc(V_fw_tables_max * sizeof(struct table_info), 7899f7d47b0SAlexander V. Chernikov M_IPFW, M_WAITOK | M_ZERO); 790b074b7bbSAlexander V. Chernikov 791b074b7bbSAlexander V. Chernikov tcfg = malloc(sizeof(struct tables_config), M_IPFW, M_WAITOK | M_ZERO); 792b074b7bbSAlexander V. Chernikov tcfg->namehash = ipfw_objhash_create(V_fw_tables_max); 793b074b7bbSAlexander V. Chernikov ch->tblcfg = tcfg; 794b074b7bbSAlexander V. Chernikov 7959f7d47b0SAlexander V. Chernikov ipfw_table_algo_init(ch); 7969f7d47b0SAlexander V. Chernikov 7973b3a8eb9SGleb Smirnoff return (0); 7983b3a8eb9SGleb Smirnoff } 7993b3a8eb9SGleb Smirnoff 8003b3a8eb9SGleb Smirnoff int 8013b3a8eb9SGleb Smirnoff ipfw_resize_tables(struct ip_fw_chain *ch, unsigned int ntables) 8023b3a8eb9SGleb Smirnoff { 8033b3a8eb9SGleb Smirnoff unsigned int ntables_old, tbl; 804b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 8059f7d47b0SAlexander V. Chernikov void *new_idx, *old_tablestate, *tablestate; 80668394ec8SAlexander V. Chernikov struct table_info *ti; 80768394ec8SAlexander V. Chernikov struct table_config *tc; 80868394ec8SAlexander V. Chernikov int i, new_blocks; 8093b3a8eb9SGleb Smirnoff 8103b3a8eb9SGleb Smirnoff /* Check new value for validity */ 8113b3a8eb9SGleb Smirnoff if (ntables > IPFW_TABLES_MAX) 8123b3a8eb9SGleb Smirnoff ntables = IPFW_TABLES_MAX; 8133b3a8eb9SGleb Smirnoff 8143b3a8eb9SGleb Smirnoff /* Allocate new pointers */ 8159f7d47b0SAlexander V. Chernikov tablestate = malloc(ntables * sizeof(struct table_info), 8169f7d47b0SAlexander V. Chernikov M_IPFW, M_WAITOK | M_ZERO); 8179f7d47b0SAlexander V. Chernikov 818b074b7bbSAlexander V. Chernikov ipfw_objhash_bitmap_alloc(ntables, (void *)&new_idx, &new_blocks); 8193b3a8eb9SGleb Smirnoff 8209f7d47b0SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 8213b3a8eb9SGleb Smirnoff 8223b3a8eb9SGleb Smirnoff tbl = (ntables >= V_fw_tables_max) ? V_fw_tables_max : ntables; 823b074b7bbSAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 824b074b7bbSAlexander V. Chernikov 8259f7d47b0SAlexander V. Chernikov /* Temporary restrict decreasing max_tables */ 8269f7d47b0SAlexander V. Chernikov if (ntables < V_fw_tables_max) { 8279f7d47b0SAlexander V. Chernikov 8289f7d47b0SAlexander V. Chernikov /* 8299f7d47b0SAlexander V. Chernikov * FIXME: Check if we really can shrink 8309f7d47b0SAlexander V. Chernikov */ 8319f7d47b0SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 832b074b7bbSAlexander V. Chernikov return (EINVAL); 833b074b7bbSAlexander V. Chernikov } 8343b3a8eb9SGleb Smirnoff 8359f7d47b0SAlexander V. Chernikov /* Copy table info/indices */ 8369f7d47b0SAlexander V. Chernikov memcpy(tablestate, ch->tablestate, sizeof(struct table_info) * tbl); 8379f7d47b0SAlexander V. Chernikov ipfw_objhash_bitmap_merge(ni, &new_idx, &new_blocks); 8383b3a8eb9SGleb Smirnoff 8399f7d47b0SAlexander V. Chernikov IPFW_WLOCK(ch); 8409f7d47b0SAlexander V. Chernikov 8419f7d47b0SAlexander V. Chernikov /* Change pointers */ 8429f7d47b0SAlexander V. Chernikov old_tablestate = ch->tablestate; 8439f7d47b0SAlexander V. Chernikov ch->tablestate = tablestate; 8449f7d47b0SAlexander V. Chernikov ipfw_objhash_bitmap_swap(ni, &new_idx, &new_blocks); 8453b3a8eb9SGleb Smirnoff 8463b3a8eb9SGleb Smirnoff ntables_old = V_fw_tables_max; 8473b3a8eb9SGleb Smirnoff V_fw_tables_max = ntables; 8483b3a8eb9SGleb Smirnoff 8493b3a8eb9SGleb Smirnoff IPFW_WUNLOCK(ch); 85068394ec8SAlexander V. Chernikov 85168394ec8SAlexander V. Chernikov /* Notify all consumers that their @ti pointer has changed */ 85268394ec8SAlexander V. Chernikov ti = (struct table_info *)ch->tablestate; 85368394ec8SAlexander V. Chernikov for (i = 0; i < tbl; i++, ti++) { 85468394ec8SAlexander V. Chernikov if (ti->lookup == NULL) 85568394ec8SAlexander V. Chernikov continue; 85668394ec8SAlexander V. Chernikov tc = (struct table_config *)ipfw_objhash_lookup_kidx(ni, i); 85768394ec8SAlexander V. Chernikov if (tc == NULL || tc->ta->change_ti == NULL) 85868394ec8SAlexander V. Chernikov continue; 85968394ec8SAlexander V. Chernikov 86068394ec8SAlexander V. Chernikov tc->ta->change_ti(tc->astate, ti); 86168394ec8SAlexander V. Chernikov } 86268394ec8SAlexander V. Chernikov 8639f7d47b0SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 8643b3a8eb9SGleb Smirnoff 8653b3a8eb9SGleb Smirnoff /* Free old pointers */ 8669f7d47b0SAlexander V. Chernikov free(old_tablestate, M_IPFW); 867b074b7bbSAlexander V. Chernikov ipfw_objhash_bitmap_free(new_idx, new_blocks); 8683b3a8eb9SGleb Smirnoff 8693b3a8eb9SGleb Smirnoff return (0); 8703b3a8eb9SGleb Smirnoff } 8713b3a8eb9SGleb Smirnoff 8723b3a8eb9SGleb Smirnoff int 8733b3a8eb9SGleb Smirnoff ipfw_lookup_table(struct ip_fw_chain *ch, uint16_t tbl, in_addr_t addr, 8743b3a8eb9SGleb Smirnoff uint32_t *val) 8753b3a8eb9SGleb Smirnoff { 8769f7d47b0SAlexander V. Chernikov struct table_info *ti; 8773b3a8eb9SGleb Smirnoff 8789f7d47b0SAlexander V. Chernikov ti = &(((struct table_info *)ch->tablestate)[tbl]); 8799f7d47b0SAlexander V. Chernikov 8809f7d47b0SAlexander V. Chernikov return (ti->lookup(ti, &addr, sizeof(in_addr_t), val)); 8813b3a8eb9SGleb Smirnoff } 8829f7d47b0SAlexander V. Chernikov 8839f7d47b0SAlexander V. Chernikov int 8849f7d47b0SAlexander V. Chernikov ipfw_lookup_table_extended(struct ip_fw_chain *ch, uint16_t tbl, uint16_t plen, 8859f7d47b0SAlexander V. Chernikov void *paddr, uint32_t *val) 8869f7d47b0SAlexander V. Chernikov { 8879f7d47b0SAlexander V. Chernikov struct table_info *ti; 8889f7d47b0SAlexander V. Chernikov 8899f7d47b0SAlexander V. Chernikov ti = &(((struct table_info *)ch->tablestate)[tbl]); 8909f7d47b0SAlexander V. Chernikov 8919f7d47b0SAlexander V. Chernikov return (ti->lookup(ti, paddr, plen, val)); 8929f7d47b0SAlexander V. Chernikov } 8939f7d47b0SAlexander V. Chernikov 8949f7d47b0SAlexander V. Chernikov /* 8959f7d47b0SAlexander V. Chernikov * Info/List/dump support for tables. 8969f7d47b0SAlexander V. Chernikov * 8979f7d47b0SAlexander V. Chernikov */ 8989f7d47b0SAlexander V. Chernikov 899f1220db8SAlexander V. Chernikov /* 900d3a4f924SAlexander V. Chernikov * High-level 'get' cmds sysctl handlers 901d3a4f924SAlexander V. Chernikov */ 902d3a4f924SAlexander V. Chernikov 903d3a4f924SAlexander V. Chernikov /* 904d3a4f924SAlexander V. Chernikov * Get buffer size needed to list info for all tables. 905ac35ff17SAlexander V. Chernikov * Data layout (v0)(current): 906d3a4f924SAlexander V. Chernikov * Request: [ empty ], size = sizeof(ipfw_obj_lheader) 907d3a4f924SAlexander V. Chernikov * Reply: [ ipfw_obj_lheader ] 908d3a4f924SAlexander V. Chernikov * 909d3a4f924SAlexander V. Chernikov * Returns 0 on success 910f1220db8SAlexander V. Chernikov */ 911f1220db8SAlexander V. Chernikov int 9122d99a349SAlexander V. Chernikov ipfw_listsize_tables(struct ip_fw_chain *ch, struct sockopt_data *sd) 913f1220db8SAlexander V. Chernikov { 914f1220db8SAlexander V. Chernikov struct _ipfw_obj_lheader *olh; 915f1220db8SAlexander V. Chernikov 9162d99a349SAlexander V. Chernikov olh = (struct _ipfw_obj_lheader *)ipfw_get_sopt_header(sd,sizeof(*olh)); 9172d99a349SAlexander V. Chernikov if (olh == NULL) 918d3a4f924SAlexander V. Chernikov return (EINVAL); 919d3a4f924SAlexander V. Chernikov 920f1220db8SAlexander V. Chernikov olh->size = sizeof(*olh); /* Make export_table store needed size */ 921f1220db8SAlexander V. Chernikov 922f1220db8SAlexander V. Chernikov IPFW_UH_RLOCK(ch); 9232d99a349SAlexander V. Chernikov export_tables(ch, olh, sd); 924f1220db8SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 925f1220db8SAlexander V. Chernikov 9262d99a349SAlexander V. Chernikov return (0); 927f1220db8SAlexander V. Chernikov } 928f1220db8SAlexander V. Chernikov 929d3a4f924SAlexander V. Chernikov /* 930d3a4f924SAlexander V. Chernikov * Lists all tables currently available in kernel. 931ac35ff17SAlexander V. Chernikov * Data layout (v0)(current): 932d3a4f924SAlexander V. Chernikov * Request: [ ipfw_obj_lheader ], size = ipfw_obj_lheader.size 933d3a4f924SAlexander V. Chernikov * Reply: [ ipfw_obj_lheader ipfw_xtable_info x N ] 934d3a4f924SAlexander V. Chernikov * 935d3a4f924SAlexander V. Chernikov * Returns 0 on success 936d3a4f924SAlexander V. Chernikov */ 937f1220db8SAlexander V. Chernikov int 9382d99a349SAlexander V. Chernikov ipfw_list_tables(struct ip_fw_chain *ch, struct sockopt_data *sd) 939f1220db8SAlexander V. Chernikov { 940f1220db8SAlexander V. Chernikov struct _ipfw_obj_lheader *olh; 941f1220db8SAlexander V. Chernikov int error; 942f1220db8SAlexander V. Chernikov 9432d99a349SAlexander V. Chernikov olh = (struct _ipfw_obj_lheader *)ipfw_get_sopt_header(sd,sizeof(*olh)); 9442d99a349SAlexander V. Chernikov if (olh == NULL) 945d3a4f924SAlexander V. Chernikov return (EINVAL); 94668394ec8SAlexander V. Chernikov if (sd->valsize < olh->size) 94768394ec8SAlexander V. Chernikov return (EINVAL); 948d3a4f924SAlexander V. Chernikov 949f1220db8SAlexander V. Chernikov IPFW_UH_RLOCK(ch); 9502d99a349SAlexander V. Chernikov error = export_tables(ch, olh, sd); 951f1220db8SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 952f1220db8SAlexander V. Chernikov 953f1220db8SAlexander V. Chernikov return (error); 954f1220db8SAlexander V. Chernikov } 955f1220db8SAlexander V. Chernikov 956f1220db8SAlexander V. Chernikov /* 9572d99a349SAlexander V. Chernikov * Store table info to buffer provided by @sd. 958ac35ff17SAlexander V. Chernikov * Data layout (v0)(current): 959d3a4f924SAlexander V. Chernikov * Request: [ ipfw_obj_header ipfw_xtable_info(empty)] 960d3a4f924SAlexander V. Chernikov * Reply: [ ipfw_obj_header ipfw_xtable_info ] 961d3a4f924SAlexander V. Chernikov * 962d3a4f924SAlexander V. Chernikov * Returns 0 on success. 963d3a4f924SAlexander V. Chernikov */ 964d3a4f924SAlexander V. Chernikov int 9652d99a349SAlexander V. Chernikov ipfw_describe_table(struct ip_fw_chain *ch, struct sockopt_data *sd) 966d3a4f924SAlexander V. Chernikov { 967d3a4f924SAlexander V. Chernikov struct _ipfw_obj_header *oh; 968d3a4f924SAlexander V. Chernikov struct table_config *tc; 969d3a4f924SAlexander V. Chernikov struct tid_info ti; 970d3a4f924SAlexander V. Chernikov size_t sz; 971d3a4f924SAlexander V. Chernikov 972d3a4f924SAlexander V. Chernikov sz = sizeof(*oh) + sizeof(ipfw_xtable_info); 9732d99a349SAlexander V. Chernikov oh = (struct _ipfw_obj_header *)ipfw_get_sopt_header(sd, sz); 9742d99a349SAlexander V. Chernikov if (oh == NULL) 975d3a4f924SAlexander V. Chernikov return (EINVAL); 976d3a4f924SAlexander V. Chernikov 977d3a4f924SAlexander V. Chernikov objheader_to_ti(oh, &ti); 978d3a4f924SAlexander V. Chernikov 979d3a4f924SAlexander V. Chernikov IPFW_UH_RLOCK(ch); 980d3a4f924SAlexander V. Chernikov if ((tc = find_table(CHAIN_TO_NI(ch), &ti)) == NULL) { 981d3a4f924SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 982d3a4f924SAlexander V. Chernikov return (ESRCH); 983d3a4f924SAlexander V. Chernikov } 984d3a4f924SAlexander V. Chernikov 985ac35ff17SAlexander V. Chernikov export_table_info(ch, tc, (ipfw_xtable_info *)(oh + 1)); 986d3a4f924SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 987d3a4f924SAlexander V. Chernikov 9882d99a349SAlexander V. Chernikov return (0); 989d3a4f924SAlexander V. Chernikov } 990d3a4f924SAlexander V. Chernikov 991f1220db8SAlexander V. Chernikov struct dump_args { 992f1220db8SAlexander V. Chernikov struct table_info *ti; 993f1220db8SAlexander V. Chernikov struct table_config *tc; 9942d99a349SAlexander V. Chernikov struct sockopt_data *sd; 995f1220db8SAlexander V. Chernikov uint32_t cnt; 996f1220db8SAlexander V. Chernikov uint16_t uidx; 99781d3153dSAlexander V. Chernikov int error; 9982d99a349SAlexander V. Chernikov ipfw_table_entry *ent; 9992d99a349SAlexander V. Chernikov uint32_t size; 100081d3153dSAlexander V. Chernikov ipfw_obj_tentry tent; 1001f1220db8SAlexander V. Chernikov }; 1002f1220db8SAlexander V. Chernikov 1003f1220db8SAlexander V. Chernikov int 10042d99a349SAlexander V. Chernikov ipfw_dump_table(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 10052d99a349SAlexander V. Chernikov struct sockopt_data *sd) 1006f1220db8SAlexander V. Chernikov { 1007d3a4f924SAlexander V. Chernikov int error; 1008d3a4f924SAlexander V. Chernikov 1009d3a4f924SAlexander V. Chernikov switch (op3->version) { 1010d3a4f924SAlexander V. Chernikov case 0: 10112d99a349SAlexander V. Chernikov error = ipfw_dump_table_v0(ch, sd); 1012d3a4f924SAlexander V. Chernikov break; 1013d3a4f924SAlexander V. Chernikov case 1: 10142d99a349SAlexander V. Chernikov error = ipfw_dump_table_v1(ch, sd); 1015d3a4f924SAlexander V. Chernikov break; 1016d3a4f924SAlexander V. Chernikov default: 1017d3a4f924SAlexander V. Chernikov error = ENOTSUP; 1018d3a4f924SAlexander V. Chernikov } 1019d3a4f924SAlexander V. Chernikov 1020d3a4f924SAlexander V. Chernikov return (error); 1021d3a4f924SAlexander V. Chernikov } 1022d3a4f924SAlexander V. Chernikov 1023d3a4f924SAlexander V. Chernikov /* 1024d3a4f924SAlexander V. Chernikov * Dumps all table data 1025ac35ff17SAlexander V. Chernikov * Data layout (v1)(current): 10262d99a349SAlexander V. Chernikov * Request: [ ipfw_obj_header ], size = ipfw_xtable_info.size 102781d3153dSAlexander V. Chernikov * Reply: [ ipfw_obj_header ipfw_xtable_info ipfw_obj_tentry x N ] 1028d3a4f924SAlexander V. Chernikov * 1029d3a4f924SAlexander V. Chernikov * Returns 0 on success 1030d3a4f924SAlexander V. Chernikov */ 1031d3a4f924SAlexander V. Chernikov static int 10322d99a349SAlexander V. Chernikov ipfw_dump_table_v1(struct ip_fw_chain *ch, struct sockopt_data *sd) 1033d3a4f924SAlexander V. Chernikov { 1034f1220db8SAlexander V. Chernikov struct _ipfw_obj_header *oh; 1035f1220db8SAlexander V. Chernikov ipfw_xtable_info *i; 1036f1220db8SAlexander V. Chernikov struct tid_info ti; 1037f1220db8SAlexander V. Chernikov struct table_config *tc; 1038f1220db8SAlexander V. Chernikov struct table_algo *ta; 1039f1220db8SAlexander V. Chernikov struct dump_args da; 1040d3a4f924SAlexander V. Chernikov uint32_t sz; 1041f1220db8SAlexander V. Chernikov 10422d99a349SAlexander V. Chernikov sz = sizeof(ipfw_obj_header) + sizeof(ipfw_xtable_info); 10432d99a349SAlexander V. Chernikov oh = (struct _ipfw_obj_header *)ipfw_get_sopt_header(sd, sz); 10442d99a349SAlexander V. Chernikov if (oh == NULL) 1045d3a4f924SAlexander V. Chernikov return (EINVAL); 1046d3a4f924SAlexander V. Chernikov 10472d99a349SAlexander V. Chernikov i = (ipfw_xtable_info *)(oh + 1); 1048d3a4f924SAlexander V. Chernikov objheader_to_ti(oh, &ti); 1049f1220db8SAlexander V. Chernikov 1050f1220db8SAlexander V. Chernikov IPFW_UH_RLOCK(ch); 1051f1220db8SAlexander V. Chernikov if ((tc = find_table(CHAIN_TO_NI(ch), &ti)) == NULL) { 1052f1220db8SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 1053f1220db8SAlexander V. Chernikov return (ESRCH); 1054f1220db8SAlexander V. Chernikov } 1055ac35ff17SAlexander V. Chernikov export_table_info(ch, tc, i); 10562d99a349SAlexander V. Chernikov sz = tc->count; 10572d99a349SAlexander V. Chernikov 105881d3153dSAlexander V. Chernikov if (sd->valsize < sz + tc->count * sizeof(ipfw_obj_tentry)) { 10592d99a349SAlexander V. Chernikov 10602d99a349SAlexander V. Chernikov /* 10612d99a349SAlexander V. Chernikov * Submitted buffer size is not enough. 10622d99a349SAlexander V. Chernikov * WE've already filled in @i structure with 10632d99a349SAlexander V. Chernikov * relevant table info including size, so we 10642d99a349SAlexander V. Chernikov * can return. Buffer will be flushed automatically. 10652d99a349SAlexander V. Chernikov */ 1066f1220db8SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 10672d99a349SAlexander V. Chernikov return (ENOMEM); 1068f1220db8SAlexander V. Chernikov } 1069f1220db8SAlexander V. Chernikov 1070f1220db8SAlexander V. Chernikov /* 1071f1220db8SAlexander V. Chernikov * Do the actual dump in eXtended format 1072f1220db8SAlexander V. Chernikov */ 1073d3a4f924SAlexander V. Chernikov memset(&da, 0, sizeof(da)); 1074f1220db8SAlexander V. Chernikov da.ti = KIDX_TO_TI(ch, tc->no.kidx); 1075f1220db8SAlexander V. Chernikov da.tc = tc; 10762d99a349SAlexander V. Chernikov da.sd = sd; 1077f1220db8SAlexander V. Chernikov 1078f1220db8SAlexander V. Chernikov ta = tc->ta; 1079f1220db8SAlexander V. Chernikov 108081d3153dSAlexander V. Chernikov ta->foreach(tc->astate, da.ti, dump_table_tentry, &da); 1081f1220db8SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 1082f1220db8SAlexander V. Chernikov 108381d3153dSAlexander V. Chernikov return (da.error); 1084f1220db8SAlexander V. Chernikov } 1085f1220db8SAlexander V. Chernikov 1086d3a4f924SAlexander V. Chernikov /* 1087d3a4f924SAlexander V. Chernikov * Dumps all table data 10882d99a349SAlexander V. Chernikov * Data layout (version 0)(legacy): 1089d3a4f924SAlexander V. Chernikov * Request: [ ipfw_xtable ], size = IP_FW_TABLE_XGETSIZE() 1090d3a4f924SAlexander V. Chernikov * Reply: [ ipfw_xtable ipfw_table_xentry x N ] 1091d3a4f924SAlexander V. Chernikov * 1092d3a4f924SAlexander V. Chernikov * Returns 0 on success 1093d3a4f924SAlexander V. Chernikov */ 1094d3a4f924SAlexander V. Chernikov static int 10952d99a349SAlexander V. Chernikov ipfw_dump_table_v0(struct ip_fw_chain *ch, struct sockopt_data *sd) 1096d3a4f924SAlexander V. Chernikov { 1097d3a4f924SAlexander V. Chernikov ipfw_xtable *xtbl; 1098d3a4f924SAlexander V. Chernikov struct tid_info ti; 1099d3a4f924SAlexander V. Chernikov struct table_config *tc; 1100d3a4f924SAlexander V. Chernikov struct table_algo *ta; 1101d3a4f924SAlexander V. Chernikov struct dump_args da; 1102d3a4f924SAlexander V. Chernikov size_t sz; 1103d3a4f924SAlexander V. Chernikov 11042d99a349SAlexander V. Chernikov xtbl = (ipfw_xtable *)ipfw_get_sopt_header(sd, sizeof(ipfw_xtable)); 11052d99a349SAlexander V. Chernikov if (xtbl == NULL) 1106d3a4f924SAlexander V. Chernikov return (EINVAL); 1107d3a4f924SAlexander V. Chernikov 1108d3a4f924SAlexander V. Chernikov memset(&ti, 0, sizeof(ti)); 1109d3a4f924SAlexander V. Chernikov ti.uidx = xtbl->tbl; 1110d3a4f924SAlexander V. Chernikov 1111d3a4f924SAlexander V. Chernikov IPFW_UH_RLOCK(ch); 1112d3a4f924SAlexander V. Chernikov if ((tc = find_table(CHAIN_TO_NI(ch), &ti)) == NULL) { 1113d3a4f924SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 1114d3a4f924SAlexander V. Chernikov return (0); 1115d3a4f924SAlexander V. Chernikov } 1116d3a4f924SAlexander V. Chernikov sz = tc->count * sizeof(ipfw_table_xentry) + sizeof(ipfw_xtable); 11172d99a349SAlexander V. Chernikov 11182d99a349SAlexander V. Chernikov xtbl->cnt = tc->count; 11192d99a349SAlexander V. Chernikov xtbl->size = sz; 11202d99a349SAlexander V. Chernikov xtbl->type = tc->no.type; 11212d99a349SAlexander V. Chernikov xtbl->tbl = ti.uidx; 11222d99a349SAlexander V. Chernikov 11232d99a349SAlexander V. Chernikov if (sd->valsize < sz) { 11242d99a349SAlexander V. Chernikov 11252d99a349SAlexander V. Chernikov /* 11262d99a349SAlexander V. Chernikov * Submitted buffer size is not enough. 11272d99a349SAlexander V. Chernikov * WE've already filled in @i structure with 11282d99a349SAlexander V. Chernikov * relevant table info including size, so we 11292d99a349SAlexander V. Chernikov * can return. Buffer will be flushed automatically. 11302d99a349SAlexander V. Chernikov */ 1131d3a4f924SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 11322d99a349SAlexander V. Chernikov return (ENOMEM); 1133d3a4f924SAlexander V. Chernikov } 1134d3a4f924SAlexander V. Chernikov 1135d3a4f924SAlexander V. Chernikov /* Do the actual dump in eXtended format */ 1136d3a4f924SAlexander V. Chernikov memset(&da, 0, sizeof(da)); 1137d3a4f924SAlexander V. Chernikov da.ti = KIDX_TO_TI(ch, tc->no.kidx); 1138d3a4f924SAlexander V. Chernikov da.tc = tc; 11392d99a349SAlexander V. Chernikov da.sd = sd; 11402d99a349SAlexander V. Chernikov 1141d3a4f924SAlexander V. Chernikov ta = tc->ta; 1142d3a4f924SAlexander V. Chernikov 1143d3a4f924SAlexander V. Chernikov ta->foreach(tc->astate, da.ti, dump_table_xentry, &da); 1144d3a4f924SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 1145d3a4f924SAlexander V. Chernikov 11462d99a349SAlexander V. Chernikov return (0); 1147d3a4f924SAlexander V. Chernikov } 1148d3a4f924SAlexander V. Chernikov 1149d3a4f924SAlexander V. Chernikov /* 11509490a627SAlexander V. Chernikov * Creates new table. 1151ac35ff17SAlexander V. Chernikov * Data layout (v0)(current): 11529490a627SAlexander V. Chernikov * Request: [ ipfw_obj_header ipfw_xtable_info ] 11539490a627SAlexander V. Chernikov * 11549490a627SAlexander V. Chernikov * Returns 0 on success 11559490a627SAlexander V. Chernikov */ 11569490a627SAlexander V. Chernikov int 1157ac35ff17SAlexander V. Chernikov ipfw_create_table(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 1158ac35ff17SAlexander V. Chernikov struct sockopt_data *sd) 11599490a627SAlexander V. Chernikov { 11609490a627SAlexander V. Chernikov struct _ipfw_obj_header *oh; 11619490a627SAlexander V. Chernikov ipfw_xtable_info *i; 11629490a627SAlexander V. Chernikov char *tname, *aname; 11639490a627SAlexander V. Chernikov struct tid_info ti; 11649490a627SAlexander V. Chernikov struct namedobj_instance *ni; 11659490a627SAlexander V. Chernikov struct table_config *tc; 11669490a627SAlexander V. Chernikov 1167ac35ff17SAlexander V. Chernikov if (sd->valsize != sizeof(*oh) + sizeof(ipfw_xtable_info)) 11689490a627SAlexander V. Chernikov return (EINVAL); 11699490a627SAlexander V. Chernikov 1170ac35ff17SAlexander V. Chernikov oh = (struct _ipfw_obj_header *)sd->kbuf; 11719490a627SAlexander V. Chernikov i = (ipfw_xtable_info *)(oh + 1); 11729490a627SAlexander V. Chernikov 11739490a627SAlexander V. Chernikov /* 11749490a627SAlexander V. Chernikov * Verify user-supplied strings. 11752d99a349SAlexander V. Chernikov * Check for null-terminated/zero-length strings/ 11769490a627SAlexander V. Chernikov */ 1177ac35ff17SAlexander V. Chernikov tname = oh->ntlv.name; 11789490a627SAlexander V. Chernikov aname = i->algoname; 1179ac35ff17SAlexander V. Chernikov if (ipfw_check_table_name(tname) != 0 || 11809490a627SAlexander V. Chernikov strnlen(aname, sizeof(i->algoname)) == sizeof(i->algoname)) 11819490a627SAlexander V. Chernikov return (EINVAL); 11829490a627SAlexander V. Chernikov 11839490a627SAlexander V. Chernikov if (aname[0] == '\0') { 11849490a627SAlexander V. Chernikov /* Use default algorithm */ 11859490a627SAlexander V. Chernikov aname = NULL; 11869490a627SAlexander V. Chernikov } 11879490a627SAlexander V. Chernikov 11889490a627SAlexander V. Chernikov objheader_to_ti(oh, &ti); 1189ac35ff17SAlexander V. Chernikov ti.type = i->type; 11909490a627SAlexander V. Chernikov 11919490a627SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 11929490a627SAlexander V. Chernikov 11939490a627SAlexander V. Chernikov IPFW_UH_RLOCK(ch); 11949490a627SAlexander V. Chernikov if ((tc = find_table(ni, &ti)) != NULL) { 11959490a627SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 11969490a627SAlexander V. Chernikov return (EEXIST); 11979490a627SAlexander V. Chernikov } 11989490a627SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 11999490a627SAlexander V. Chernikov 1200db785d31SAlexander V. Chernikov return (create_table_internal(ch, &ti, aname, i->vtype)); 1201db785d31SAlexander V. Chernikov } 1202db785d31SAlexander V. Chernikov 1203db785d31SAlexander V. Chernikov /* 1204db785d31SAlexander V. Chernikov * Creates new table based on @ti and @aname. 1205db785d31SAlexander V. Chernikov * 1206db785d31SAlexander V. Chernikov * Relies on table name checking inside find_name_tlv() 1207db785d31SAlexander V. Chernikov * Assume @aname to be checked and valid. 1208db785d31SAlexander V. Chernikov * 1209db785d31SAlexander V. Chernikov * Returns 0 on success. 1210db785d31SAlexander V. Chernikov */ 1211db785d31SAlexander V. Chernikov static int 1212db785d31SAlexander V. Chernikov create_table_internal(struct ip_fw_chain *ch, struct tid_info *ti, 1213db785d31SAlexander V. Chernikov char *aname, uint8_t vtype) 1214db785d31SAlexander V. Chernikov { 1215db785d31SAlexander V. Chernikov struct namedobj_instance *ni; 1216db785d31SAlexander V. Chernikov struct table_config *tc; 1217db785d31SAlexander V. Chernikov struct table_algo *ta; 1218db785d31SAlexander V. Chernikov uint16_t kidx; 1219db785d31SAlexander V. Chernikov 1220db785d31SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 1221db785d31SAlexander V. Chernikov 1222db785d31SAlexander V. Chernikov ta = find_table_algo(CHAIN_TO_TCFG(ch), ti, aname); 12239490a627SAlexander V. Chernikov if (ta == NULL) 12249490a627SAlexander V. Chernikov return (ENOTSUP); 12259490a627SAlexander V. Chernikov 122668394ec8SAlexander V. Chernikov if ((tc = alloc_table_config(ch, ti, ta, aname, vtype)) == NULL) 12279490a627SAlexander V. Chernikov return (ENOMEM); 12289490a627SAlexander V. Chernikov 12299490a627SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 1230db785d31SAlexander V. Chernikov 1231db785d31SAlexander V. Chernikov /* Check if table has been already created */ 1232db785d31SAlexander V. Chernikov if (find_table(ni, ti) != NULL) { 1233db785d31SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1234db785d31SAlexander V. Chernikov free_table_config(ni, tc); 1235db785d31SAlexander V. Chernikov return (EEXIST); 1236db785d31SAlexander V. Chernikov } 1237db785d31SAlexander V. Chernikov 1238ac35ff17SAlexander V. Chernikov if (ipfw_objhash_alloc_idx(ni, &kidx) != 0) { 12399490a627SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1240db785d31SAlexander V. Chernikov printf("Unable to allocate table index." 1241db785d31SAlexander V. Chernikov " Consider increasing net.inet.ip.fw.tables_max"); 12429490a627SAlexander V. Chernikov free_table_config(ni, tc); 12439490a627SAlexander V. Chernikov return (EBUSY); 12449490a627SAlexander V. Chernikov } 12459490a627SAlexander V. Chernikov 12469490a627SAlexander V. Chernikov tc->no.kidx = kidx; 12479490a627SAlexander V. Chernikov 12489490a627SAlexander V. Chernikov IPFW_WLOCK(ch); 12499490a627SAlexander V. Chernikov link_table(ch, tc); 12509490a627SAlexander V. Chernikov IPFW_WUNLOCK(ch); 12519490a627SAlexander V. Chernikov 12529490a627SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 12539490a627SAlexander V. Chernikov 12549490a627SAlexander V. Chernikov return (0); 12559490a627SAlexander V. Chernikov } 12569490a627SAlexander V. Chernikov 1257d3a4f924SAlexander V. Chernikov void 1258d3a4f924SAlexander V. Chernikov objheader_to_ti(struct _ipfw_obj_header *oh, struct tid_info *ti) 1259d3a4f924SAlexander V. Chernikov { 1260d3a4f924SAlexander V. Chernikov 1261d3a4f924SAlexander V. Chernikov memset(ti, 0, sizeof(struct tid_info)); 126281d3153dSAlexander V. Chernikov ti->set = oh->ntlv.set; 1263d3a4f924SAlexander V. Chernikov ti->uidx = oh->idx; 1264d3a4f924SAlexander V. Chernikov ti->tlvs = &oh->ntlv; 1265d3a4f924SAlexander V. Chernikov ti->tlen = oh->ntlv.head.length; 1266d3a4f924SAlexander V. Chernikov } 1267d3a4f924SAlexander V. Chernikov 1268563b5ab1SAlexander V. Chernikov int 1269563b5ab1SAlexander V. Chernikov ipfw_export_table_ntlv(struct ip_fw_chain *ch, uint16_t kidx, 1270563b5ab1SAlexander V. Chernikov struct sockopt_data *sd) 1271563b5ab1SAlexander V. Chernikov { 1272563b5ab1SAlexander V. Chernikov struct namedobj_instance *ni; 1273563b5ab1SAlexander V. Chernikov struct named_object *no; 1274563b5ab1SAlexander V. Chernikov ipfw_obj_ntlv *ntlv; 1275563b5ab1SAlexander V. Chernikov 1276563b5ab1SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 1277563b5ab1SAlexander V. Chernikov 1278ac35ff17SAlexander V. Chernikov no = ipfw_objhash_lookup_kidx(ni, kidx); 1279563b5ab1SAlexander V. Chernikov KASSERT(no != NULL, ("invalid table kidx passed")); 1280563b5ab1SAlexander V. Chernikov 1281563b5ab1SAlexander V. Chernikov ntlv = (ipfw_obj_ntlv *)ipfw_get_sopt_space(sd, sizeof(*ntlv)); 1282563b5ab1SAlexander V. Chernikov if (ntlv == NULL) 1283563b5ab1SAlexander V. Chernikov return (ENOMEM); 1284563b5ab1SAlexander V. Chernikov 1285563b5ab1SAlexander V. Chernikov ntlv->head.type = IPFW_TLV_TBL_NAME; 1286563b5ab1SAlexander V. Chernikov ntlv->head.length = sizeof(*ntlv); 1287563b5ab1SAlexander V. Chernikov ntlv->idx = no->kidx; 1288563b5ab1SAlexander V. Chernikov strlcpy(ntlv->name, no->name, sizeof(ntlv->name)); 1289563b5ab1SAlexander V. Chernikov 1290563b5ab1SAlexander V. Chernikov return (0); 1291563b5ab1SAlexander V. Chernikov } 1292563b5ab1SAlexander V. Chernikov 12939f7d47b0SAlexander V. Chernikov static void 1294ac35ff17SAlexander V. Chernikov export_table_info(struct ip_fw_chain *ch, struct table_config *tc, 1295ac35ff17SAlexander V. Chernikov ipfw_xtable_info *i) 12969f7d47b0SAlexander V. Chernikov { 1297ac35ff17SAlexander V. Chernikov struct table_info *ti; 12989f7d47b0SAlexander V. Chernikov 12999f7d47b0SAlexander V. Chernikov i->type = tc->no.type; 1300ac35ff17SAlexander V. Chernikov i->vtype = tc->vtype; 13019f7d47b0SAlexander V. Chernikov i->set = tc->no.set; 13029f7d47b0SAlexander V. Chernikov i->kidx = tc->no.kidx; 13039f7d47b0SAlexander V. Chernikov i->refcnt = tc->no.refcnt; 13049f7d47b0SAlexander V. Chernikov i->count = tc->count; 130581d3153dSAlexander V. Chernikov i->size = tc->count * sizeof(ipfw_obj_tentry); 1306f1220db8SAlexander V. Chernikov i->size += sizeof(ipfw_obj_header) + sizeof(ipfw_xtable_info); 13079f7d47b0SAlexander V. Chernikov strlcpy(i->tablename, tc->tablename, sizeof(i->tablename)); 1308ac35ff17SAlexander V. Chernikov if (tc->ta->print_config != NULL) { 1309ac35ff17SAlexander V. Chernikov /* Use algo function to print table config to string */ 1310ac35ff17SAlexander V. Chernikov ti = KIDX_TO_TI(ch, tc->no.kidx); 1311ac35ff17SAlexander V. Chernikov tc->ta->print_config(tc->astate, ti, i->algoname, 1312ac35ff17SAlexander V. Chernikov sizeof(i->algoname)); 1313ac35ff17SAlexander V. Chernikov } else 1314ac35ff17SAlexander V. Chernikov strlcpy(i->algoname, tc->ta->name, sizeof(i->algoname)); 13159f7d47b0SAlexander V. Chernikov } 13169f7d47b0SAlexander V. Chernikov 1317ac35ff17SAlexander V. Chernikov struct dump_table_args { 1318ac35ff17SAlexander V. Chernikov struct ip_fw_chain *ch; 1319ac35ff17SAlexander V. Chernikov struct sockopt_data *sd; 1320ac35ff17SAlexander V. Chernikov }; 1321ac35ff17SAlexander V. Chernikov 13229f7d47b0SAlexander V. Chernikov static void 13239f7d47b0SAlexander V. Chernikov export_table_internal(struct namedobj_instance *ni, struct named_object *no, 13249f7d47b0SAlexander V. Chernikov void *arg) 13253b3a8eb9SGleb Smirnoff { 13269f7d47b0SAlexander V. Chernikov ipfw_xtable_info *i; 1327ac35ff17SAlexander V. Chernikov struct dump_table_args *dta; 13283b3a8eb9SGleb Smirnoff 1329ac35ff17SAlexander V. Chernikov dta = (struct dump_table_args *)arg; 1330ac35ff17SAlexander V. Chernikov 1331ac35ff17SAlexander V. Chernikov i = (ipfw_xtable_info *)ipfw_get_sopt_space(dta->sd, sizeof(*i)); 133268394ec8SAlexander V. Chernikov KASSERT(i != 0, ("previously checked buffer is not enough")); 13339f7d47b0SAlexander V. Chernikov 1334ac35ff17SAlexander V. Chernikov export_table_info(dta->ch, (struct table_config *)no, i); 13359f7d47b0SAlexander V. Chernikov } 13369f7d47b0SAlexander V. Chernikov 1337f1220db8SAlexander V. Chernikov /* 1338f1220db8SAlexander V. Chernikov * Export all tables as ipfw_xtable_info structures to 13392d99a349SAlexander V. Chernikov * storage provided by @sd. 1340f1220db8SAlexander V. Chernikov * Returns 0 on success. 1341f1220db8SAlexander V. Chernikov */ 1342f1220db8SAlexander V. Chernikov static int 13432d99a349SAlexander V. Chernikov export_tables(struct ip_fw_chain *ch, ipfw_obj_lheader *olh, 13442d99a349SAlexander V. Chernikov struct sockopt_data *sd) 13459f7d47b0SAlexander V. Chernikov { 13469f7d47b0SAlexander V. Chernikov uint32_t size; 13479f7d47b0SAlexander V. Chernikov uint32_t count; 1348ac35ff17SAlexander V. Chernikov struct dump_table_args dta; 13499f7d47b0SAlexander V. Chernikov 13509f7d47b0SAlexander V. Chernikov count = ipfw_objhash_count(CHAIN_TO_NI(ch)); 13519f7d47b0SAlexander V. Chernikov size = count * sizeof(ipfw_xtable_info) + sizeof(ipfw_obj_lheader); 13522d99a349SAlexander V. Chernikov 13532d99a349SAlexander V. Chernikov /* Fill in header regadless of buffer size */ 1354f1220db8SAlexander V. Chernikov olh->count = count; 1355f1220db8SAlexander V. Chernikov olh->objsize = sizeof(ipfw_xtable_info); 13562d99a349SAlexander V. Chernikov 13572d99a349SAlexander V. Chernikov if (size > olh->size) { 13582d99a349SAlexander V. Chernikov olh->size = size; 13599f7d47b0SAlexander V. Chernikov return (ENOMEM); 1360f1220db8SAlexander V. Chernikov } 136168394ec8SAlexander V. Chernikov 13629f7d47b0SAlexander V. Chernikov olh->size = size; 13632d99a349SAlexander V. Chernikov 1364ac35ff17SAlexander V. Chernikov dta.ch = ch; 1365ac35ff17SAlexander V. Chernikov dta.sd = sd; 1366ac35ff17SAlexander V. Chernikov 1367ac35ff17SAlexander V. Chernikov ipfw_objhash_foreach(CHAIN_TO_NI(ch), export_table_internal, &dta); 13689f7d47b0SAlexander V. Chernikov 13693b3a8eb9SGleb Smirnoff return (0); 13703b3a8eb9SGleb Smirnoff } 13713b3a8eb9SGleb Smirnoff 137281d3153dSAlexander V. Chernikov /* 137381d3153dSAlexander V. Chernikov * Legacy IP_FW_TABLE_GETSIZE handler 137481d3153dSAlexander V. Chernikov */ 13753b3a8eb9SGleb Smirnoff int 1376b074b7bbSAlexander V. Chernikov ipfw_count_table(struct ip_fw_chain *ch, struct tid_info *ti, uint32_t *cnt) 13773b3a8eb9SGleb Smirnoff { 1378b074b7bbSAlexander V. Chernikov struct table_config *tc; 13793b3a8eb9SGleb Smirnoff 1380b074b7bbSAlexander V. Chernikov if ((tc = find_table(CHAIN_TO_NI(ch), ti)) == NULL) 1381b074b7bbSAlexander V. Chernikov return (ESRCH); 13829f7d47b0SAlexander V. Chernikov *cnt = tc->count; 13833b3a8eb9SGleb Smirnoff return (0); 13843b3a8eb9SGleb Smirnoff } 13853b3a8eb9SGleb Smirnoff 13869f7d47b0SAlexander V. Chernikov 138781d3153dSAlexander V. Chernikov /* 138881d3153dSAlexander V. Chernikov * Legacy IP_FW_TABLE_XGETSIZE handler 138981d3153dSAlexander V. Chernikov */ 13909f7d47b0SAlexander V. Chernikov int 13919f7d47b0SAlexander V. Chernikov ipfw_count_xtable(struct ip_fw_chain *ch, struct tid_info *ti, uint32_t *cnt) 13923b3a8eb9SGleb Smirnoff { 13939f7d47b0SAlexander V. Chernikov struct table_config *tc; 13949f7d47b0SAlexander V. Chernikov 1395d3a4f924SAlexander V. Chernikov if ((tc = find_table(CHAIN_TO_NI(ch), ti)) == NULL) { 1396d3a4f924SAlexander V. Chernikov *cnt = 0; 13979f7d47b0SAlexander V. Chernikov return (0); /* 'table all list' requires success */ 1398d3a4f924SAlexander V. Chernikov } 13999f7d47b0SAlexander V. Chernikov *cnt = tc->count * sizeof(ipfw_table_xentry); 14009f7d47b0SAlexander V. Chernikov if (tc->count > 0) 14019f7d47b0SAlexander V. Chernikov *cnt += sizeof(ipfw_xtable); 14029f7d47b0SAlexander V. Chernikov return (0); 14039f7d47b0SAlexander V. Chernikov } 14049f7d47b0SAlexander V. Chernikov 14059f7d47b0SAlexander V. Chernikov static int 14069f7d47b0SAlexander V. Chernikov dump_table_entry(void *e, void *arg) 14079f7d47b0SAlexander V. Chernikov { 14089f7d47b0SAlexander V. Chernikov struct dump_args *da; 14099f7d47b0SAlexander V. Chernikov struct table_config *tc; 14109f7d47b0SAlexander V. Chernikov struct table_algo *ta; 14113b3a8eb9SGleb Smirnoff ipfw_table_entry *ent; 141281d3153dSAlexander V. Chernikov int error; 14133b3a8eb9SGleb Smirnoff 14149f7d47b0SAlexander V. Chernikov da = (struct dump_args *)arg; 14159f7d47b0SAlexander V. Chernikov 14169f7d47b0SAlexander V. Chernikov tc = da->tc; 14179f7d47b0SAlexander V. Chernikov ta = tc->ta; 14189f7d47b0SAlexander V. Chernikov 14199f7d47b0SAlexander V. Chernikov /* Out of memory, returning */ 1420f1220db8SAlexander V. Chernikov if (da->cnt == da->size) 14213b3a8eb9SGleb Smirnoff return (1); 1422f1220db8SAlexander V. Chernikov ent = da->ent++; 1423f1220db8SAlexander V. Chernikov ent->tbl = da->uidx; 1424f1220db8SAlexander V. Chernikov da->cnt++; 14259f7d47b0SAlexander V. Chernikov 142681d3153dSAlexander V. Chernikov error = ta->dump_tentry(tc->astate, da->ti, e, &da->tent); 142781d3153dSAlexander V. Chernikov if (error != 0) 142881d3153dSAlexander V. Chernikov return (error); 142981d3153dSAlexander V. Chernikov 143081d3153dSAlexander V. Chernikov ent->addr = da->tent.k.addr.s_addr; 143181d3153dSAlexander V. Chernikov ent->masklen = da->tent.masklen; 143281d3153dSAlexander V. Chernikov ent->value = da->tent.value; 143381d3153dSAlexander V. Chernikov 143481d3153dSAlexander V. Chernikov return (0); 14353b3a8eb9SGleb Smirnoff } 14363b3a8eb9SGleb Smirnoff 1437f1220db8SAlexander V. Chernikov /* 1438f1220db8SAlexander V. Chernikov * Dumps table in pre-8.1 legacy format. 1439f1220db8SAlexander V. Chernikov */ 14403b3a8eb9SGleb Smirnoff int 1441f1220db8SAlexander V. Chernikov ipfw_dump_table_legacy(struct ip_fw_chain *ch, struct tid_info *ti, 1442f1220db8SAlexander V. Chernikov ipfw_table *tbl) 14433b3a8eb9SGleb Smirnoff { 1444b074b7bbSAlexander V. Chernikov struct table_config *tc; 14459f7d47b0SAlexander V. Chernikov struct table_algo *ta; 14469f7d47b0SAlexander V. Chernikov struct dump_args da; 14473b3a8eb9SGleb Smirnoff 14483b3a8eb9SGleb Smirnoff tbl->cnt = 0; 14493b3a8eb9SGleb Smirnoff 1450b074b7bbSAlexander V. Chernikov if ((tc = find_table(CHAIN_TO_NI(ch), ti)) == NULL) 1451b074b7bbSAlexander V. Chernikov return (0); /* XXX: We should return ESRCH */ 14529f7d47b0SAlexander V. Chernikov 14539f7d47b0SAlexander V. Chernikov ta = tc->ta; 14549f7d47b0SAlexander V. Chernikov 145581d3153dSAlexander V. Chernikov /* This dump format supports IPv4 only */ 145681d3153dSAlexander V. Chernikov if (tc->no.type != IPFW_TABLE_CIDR) 145781d3153dSAlexander V. Chernikov return (0); 14589f7d47b0SAlexander V. Chernikov 1459d3a4f924SAlexander V. Chernikov memset(&da, 0, sizeof(da)); 14609f7d47b0SAlexander V. Chernikov da.ti = KIDX_TO_TI(ch, tc->no.kidx); 14619f7d47b0SAlexander V. Chernikov da.tc = tc; 1462f1220db8SAlexander V. Chernikov da.ent = &tbl->ent[0]; 1463f1220db8SAlexander V. Chernikov da.size = tbl->size; 14649f7d47b0SAlexander V. Chernikov 14659f7d47b0SAlexander V. Chernikov tbl->cnt = 0; 14669f7d47b0SAlexander V. Chernikov ta->foreach(tc->astate, da.ti, dump_table_entry, &da); 1467f1220db8SAlexander V. Chernikov tbl->cnt = da.cnt; 14689f7d47b0SAlexander V. Chernikov 14693b3a8eb9SGleb Smirnoff return (0); 14703b3a8eb9SGleb Smirnoff } 14713b3a8eb9SGleb Smirnoff 14729490a627SAlexander V. Chernikov /* 147381d3153dSAlexander V. Chernikov * Dumps table entry in eXtended format (v1)(current). 147481d3153dSAlexander V. Chernikov */ 147581d3153dSAlexander V. Chernikov static int 147681d3153dSAlexander V. Chernikov dump_table_tentry(void *e, void *arg) 147781d3153dSAlexander V. Chernikov { 147881d3153dSAlexander V. Chernikov struct dump_args *da; 147981d3153dSAlexander V. Chernikov struct table_config *tc; 148081d3153dSAlexander V. Chernikov struct table_algo *ta; 148181d3153dSAlexander V. Chernikov ipfw_obj_tentry *tent; 148281d3153dSAlexander V. Chernikov 148381d3153dSAlexander V. Chernikov da = (struct dump_args *)arg; 148481d3153dSAlexander V. Chernikov 148581d3153dSAlexander V. Chernikov tc = da->tc; 148681d3153dSAlexander V. Chernikov ta = tc->ta; 148781d3153dSAlexander V. Chernikov 148881d3153dSAlexander V. Chernikov tent = (ipfw_obj_tentry *)ipfw_get_sopt_space(da->sd, sizeof(*tent)); 148981d3153dSAlexander V. Chernikov /* Out of memory, returning */ 149081d3153dSAlexander V. Chernikov if (tent == NULL) { 149181d3153dSAlexander V. Chernikov da->error = ENOMEM; 149281d3153dSAlexander V. Chernikov return (1); 149381d3153dSAlexander V. Chernikov } 149481d3153dSAlexander V. Chernikov tent->head.length = sizeof(ipfw_obj_tentry); 149581d3153dSAlexander V. Chernikov tent->idx = da->uidx; 149681d3153dSAlexander V. Chernikov 149781d3153dSAlexander V. Chernikov return (ta->dump_tentry(tc->astate, da->ti, e, tent)); 149881d3153dSAlexander V. Chernikov } 149981d3153dSAlexander V. Chernikov 150081d3153dSAlexander V. Chernikov /* 150181d3153dSAlexander V. Chernikov * Dumps table entry in eXtended format (v0). 15029490a627SAlexander V. Chernikov */ 15033b3a8eb9SGleb Smirnoff static int 15049f7d47b0SAlexander V. Chernikov dump_table_xentry(void *e, void *arg) 15053b3a8eb9SGleb Smirnoff { 15069f7d47b0SAlexander V. Chernikov struct dump_args *da; 15079f7d47b0SAlexander V. Chernikov struct table_config *tc; 15089f7d47b0SAlexander V. Chernikov struct table_algo *ta; 15093b3a8eb9SGleb Smirnoff ipfw_table_xentry *xent; 151081d3153dSAlexander V. Chernikov ipfw_obj_tentry *tent; 151181d3153dSAlexander V. Chernikov int error; 15123b3a8eb9SGleb Smirnoff 15139f7d47b0SAlexander V. Chernikov da = (struct dump_args *)arg; 15149f7d47b0SAlexander V. Chernikov 15159f7d47b0SAlexander V. Chernikov tc = da->tc; 15169f7d47b0SAlexander V. Chernikov ta = tc->ta; 15179f7d47b0SAlexander V. Chernikov 15182d99a349SAlexander V. Chernikov xent = (ipfw_table_xentry *)ipfw_get_sopt_space(da->sd, sizeof(*xent)); 15193b3a8eb9SGleb Smirnoff /* Out of memory, returning */ 15202d99a349SAlexander V. Chernikov if (xent == NULL) 15213b3a8eb9SGleb Smirnoff return (1); 15223b3a8eb9SGleb Smirnoff xent->len = sizeof(ipfw_table_xentry); 1523f1220db8SAlexander V. Chernikov xent->tbl = da->uidx; 15249f7d47b0SAlexander V. Chernikov 152581d3153dSAlexander V. Chernikov memset(&da->tent, 0, sizeof(da->tent)); 152681d3153dSAlexander V. Chernikov tent = &da->tent; 152781d3153dSAlexander V. Chernikov error = ta->dump_tentry(tc->astate, da->ti, e, tent); 152881d3153dSAlexander V. Chernikov if (error != 0) 152981d3153dSAlexander V. Chernikov return (error); 153081d3153dSAlexander V. Chernikov 153181d3153dSAlexander V. Chernikov /* Convert current format to previous one */ 153281d3153dSAlexander V. Chernikov xent->masklen = tent->masklen; 153381d3153dSAlexander V. Chernikov xent->value = tent->value; 153481d3153dSAlexander V. Chernikov /* Apply some hacks */ 153581d3153dSAlexander V. Chernikov if (tc->no.type == IPFW_TABLE_CIDR && tent->subtype == AF_INET) { 153681d3153dSAlexander V. Chernikov xent->k.addr6.s6_addr32[3] = tent->k.addr.s_addr; 153781d3153dSAlexander V. Chernikov xent->flags = IPFW_TCF_INET; 153881d3153dSAlexander V. Chernikov } else 153981d3153dSAlexander V. Chernikov memcpy(&xent->k, &tent->k, sizeof(xent->k)); 154081d3153dSAlexander V. Chernikov 154181d3153dSAlexander V. Chernikov return (0); 15429f7d47b0SAlexander V. Chernikov } 15439f7d47b0SAlexander V. Chernikov 15449f7d47b0SAlexander V. Chernikov /* 15459f7d47b0SAlexander V. Chernikov * Table algorithms 15469f7d47b0SAlexander V. Chernikov */ 15473b3a8eb9SGleb Smirnoff 15489f7d47b0SAlexander V. Chernikov /* 15499490a627SAlexander V. Chernikov * Finds algoritm by index, table type or supplied name 15509f7d47b0SAlexander V. Chernikov */ 15519f7d47b0SAlexander V. Chernikov static struct table_algo * 15529490a627SAlexander V. Chernikov find_table_algo(struct tables_config *tcfg, struct tid_info *ti, char *name) 15539f7d47b0SAlexander V. Chernikov { 15549490a627SAlexander V. Chernikov int i, l; 15559490a627SAlexander V. Chernikov struct table_algo *ta; 15569f7d47b0SAlexander V. Chernikov 15579f7d47b0SAlexander V. Chernikov /* Search by index */ 15589f7d47b0SAlexander V. Chernikov if (ti->atype != 0) { 15599f7d47b0SAlexander V. Chernikov if (ti->atype > tcfg->algo_count) 15609f7d47b0SAlexander V. Chernikov return (NULL); 15619f7d47b0SAlexander V. Chernikov return (tcfg->algo[ti->atype]); 15629f7d47b0SAlexander V. Chernikov } 15639f7d47b0SAlexander V. Chernikov 15649490a627SAlexander V. Chernikov /* Search by name if supplied */ 15659490a627SAlexander V. Chernikov if (name != NULL) { 15669490a627SAlexander V. Chernikov /* TODO: better search */ 15679490a627SAlexander V. Chernikov for (i = 1; i <= tcfg->algo_count; i++) { 15689490a627SAlexander V. Chernikov ta = tcfg->algo[i]; 15699490a627SAlexander V. Chernikov 15709490a627SAlexander V. Chernikov /* 15719490a627SAlexander V. Chernikov * One can supply additional algorithm 15729490a627SAlexander V. Chernikov * parameters so we compare only the first word 15739490a627SAlexander V. Chernikov * of supplied name: 15749490a627SAlexander V. Chernikov * 'hash_cidr hsize=32' 15759490a627SAlexander V. Chernikov * '^^^^^^^^^' 15769490a627SAlexander V. Chernikov * 15779490a627SAlexander V. Chernikov */ 15789490a627SAlexander V. Chernikov l = strlen(ta->name); 15799490a627SAlexander V. Chernikov if (strncmp(name, ta->name, l) == 0) { 15809490a627SAlexander V. Chernikov if (name[l] == '\0' || name[l] == ' ') 15819490a627SAlexander V. Chernikov return (ta); 15829490a627SAlexander V. Chernikov } 15839490a627SAlexander V. Chernikov } 15849490a627SAlexander V. Chernikov 15859490a627SAlexander V. Chernikov return (NULL); 15869490a627SAlexander V. Chernikov } 15879490a627SAlexander V. Chernikov 15889f7d47b0SAlexander V. Chernikov /* Search by type */ 15899f7d47b0SAlexander V. Chernikov switch (ti->type) { 15903b3a8eb9SGleb Smirnoff case IPFW_TABLE_CIDR: 15919f7d47b0SAlexander V. Chernikov return (&radix_cidr); 15923b3a8eb9SGleb Smirnoff case IPFW_TABLE_INTERFACE: 159368394ec8SAlexander V. Chernikov return (&idx_iface); 159468394ec8SAlexander V. Chernikov //return (&radix_iface); 15953b3a8eb9SGleb Smirnoff } 15963b3a8eb9SGleb Smirnoff 15979f7d47b0SAlexander V. Chernikov return (NULL); 15983b3a8eb9SGleb Smirnoff } 15993b3a8eb9SGleb Smirnoff 16009f7d47b0SAlexander V. Chernikov void 16019f7d47b0SAlexander V. Chernikov ipfw_add_table_algo(struct ip_fw_chain *ch, struct table_algo *ta) 16023b3a8eb9SGleb Smirnoff { 16039f7d47b0SAlexander V. Chernikov struct tables_config *tcfg; 16043b3a8eb9SGleb Smirnoff 16059f7d47b0SAlexander V. Chernikov tcfg = CHAIN_TO_TCFG(ch); 1606b074b7bbSAlexander V. Chernikov 16079f7d47b0SAlexander V. Chernikov KASSERT(tcfg->algo_count < 255, ("Increase algo array size")); 16089f7d47b0SAlexander V. Chernikov 16099f7d47b0SAlexander V. Chernikov tcfg->algo[++tcfg->algo_count] = ta; 16109f7d47b0SAlexander V. Chernikov ta->idx = tcfg->algo_count; 16113b3a8eb9SGleb Smirnoff } 16123b3a8eb9SGleb Smirnoff 16139f7d47b0SAlexander V. Chernikov 1614b074b7bbSAlexander V. Chernikov /* 1615b074b7bbSAlexander V. Chernikov * Tables rewriting code 1616b074b7bbSAlexander V. Chernikov * 1617b074b7bbSAlexander V. Chernikov */ 1618b074b7bbSAlexander V. Chernikov 1619b074b7bbSAlexander V. Chernikov /* 1620b074b7bbSAlexander V. Chernikov * Determine table number and lookup type for @cmd. 1621b074b7bbSAlexander V. Chernikov * Fill @tbl and @type with appropriate values. 1622b074b7bbSAlexander V. Chernikov * Returns 0 for relevant opcodes, 1 otherwise. 1623b074b7bbSAlexander V. Chernikov */ 1624b074b7bbSAlexander V. Chernikov static int 1625b074b7bbSAlexander V. Chernikov classify_table_opcode(ipfw_insn *cmd, uint16_t *puidx, uint8_t *ptype) 1626b074b7bbSAlexander V. Chernikov { 1627b074b7bbSAlexander V. Chernikov ipfw_insn_if *cmdif; 1628b074b7bbSAlexander V. Chernikov int skip; 1629b074b7bbSAlexander V. Chernikov uint16_t v; 1630b074b7bbSAlexander V. Chernikov 1631b074b7bbSAlexander V. Chernikov skip = 1; 1632b074b7bbSAlexander V. Chernikov 1633b074b7bbSAlexander V. Chernikov switch (cmd->opcode) { 1634b074b7bbSAlexander V. Chernikov case O_IP_SRC_LOOKUP: 1635b074b7bbSAlexander V. Chernikov case O_IP_DST_LOOKUP: 1636b074b7bbSAlexander V. Chernikov /* Basic IPv4/IPv6 or u32 lookups */ 1637b074b7bbSAlexander V. Chernikov *puidx = cmd->arg1; 1638b074b7bbSAlexander V. Chernikov /* Assume CIDR by default */ 1639b074b7bbSAlexander V. Chernikov *ptype = IPFW_TABLE_CIDR; 1640b074b7bbSAlexander V. Chernikov skip = 0; 1641b074b7bbSAlexander V. Chernikov 1642b074b7bbSAlexander V. Chernikov if (F_LEN(cmd) > F_INSN_SIZE(ipfw_insn_u32)) { 1643b074b7bbSAlexander V. Chernikov /* 1644b074b7bbSAlexander V. Chernikov * generic lookup. The key must be 1645b074b7bbSAlexander V. Chernikov * in 32bit big-endian format. 1646b074b7bbSAlexander V. Chernikov */ 1647b074b7bbSAlexander V. Chernikov v = ((ipfw_insn_u32 *)cmd)->d[1]; 1648b074b7bbSAlexander V. Chernikov switch (v) { 1649b074b7bbSAlexander V. Chernikov case 0: 1650b074b7bbSAlexander V. Chernikov case 1: 1651b074b7bbSAlexander V. Chernikov /* IPv4 src/dst */ 1652b074b7bbSAlexander V. Chernikov break; 1653b074b7bbSAlexander V. Chernikov case 2: 1654b074b7bbSAlexander V. Chernikov case 3: 1655b074b7bbSAlexander V. Chernikov /* src/dst port */ 1656b074b7bbSAlexander V. Chernikov //type = IPFW_TABLE_U16; 1657b074b7bbSAlexander V. Chernikov break; 1658b074b7bbSAlexander V. Chernikov case 4: 1659b074b7bbSAlexander V. Chernikov /* uid/gid */ 1660b074b7bbSAlexander V. Chernikov //type = IPFW_TABLE_U32; 1661b074b7bbSAlexander V. Chernikov case 5: 1662b074b7bbSAlexander V. Chernikov //type = IPFW_TABLE_U32; 1663b074b7bbSAlexander V. Chernikov /* jid */ 1664b074b7bbSAlexander V. Chernikov case 6: 1665b074b7bbSAlexander V. Chernikov //type = IPFW_TABLE_U16; 1666b074b7bbSAlexander V. Chernikov /* dscp */ 1667b074b7bbSAlexander V. Chernikov break; 1668b074b7bbSAlexander V. Chernikov } 1669b074b7bbSAlexander V. Chernikov } 1670b074b7bbSAlexander V. Chernikov break; 1671b074b7bbSAlexander V. Chernikov case O_XMIT: 1672b074b7bbSAlexander V. Chernikov case O_RECV: 1673b074b7bbSAlexander V. Chernikov case O_VIA: 1674b074b7bbSAlexander V. Chernikov /* Interface table, possibly */ 1675b074b7bbSAlexander V. Chernikov cmdif = (ipfw_insn_if *)cmd; 1676b074b7bbSAlexander V. Chernikov if (cmdif->name[0] != '\1') 1677b074b7bbSAlexander V. Chernikov break; 1678b074b7bbSAlexander V. Chernikov 1679b074b7bbSAlexander V. Chernikov *ptype = IPFW_TABLE_INTERFACE; 1680b074b7bbSAlexander V. Chernikov *puidx = cmdif->p.glob; 1681b074b7bbSAlexander V. Chernikov skip = 0; 1682b074b7bbSAlexander V. Chernikov break; 1683b074b7bbSAlexander V. Chernikov } 1684b074b7bbSAlexander V. Chernikov 1685b074b7bbSAlexander V. Chernikov return (skip); 1686b074b7bbSAlexander V. Chernikov } 1687b074b7bbSAlexander V. Chernikov 1688b074b7bbSAlexander V. Chernikov /* 1689b074b7bbSAlexander V. Chernikov * Sets new table value for given opcode. 1690b074b7bbSAlexander V. Chernikov * Assume the same opcodes as classify_table_opcode() 1691b074b7bbSAlexander V. Chernikov */ 1692b074b7bbSAlexander V. Chernikov static void 1693b074b7bbSAlexander V. Chernikov update_table_opcode(ipfw_insn *cmd, uint16_t idx) 1694b074b7bbSAlexander V. Chernikov { 1695b074b7bbSAlexander V. Chernikov ipfw_insn_if *cmdif; 1696b074b7bbSAlexander V. Chernikov 1697b074b7bbSAlexander V. Chernikov switch (cmd->opcode) { 1698b074b7bbSAlexander V. Chernikov case O_IP_SRC_LOOKUP: 1699b074b7bbSAlexander V. Chernikov case O_IP_DST_LOOKUP: 1700b074b7bbSAlexander V. Chernikov /* Basic IPv4/IPv6 or u32 lookups */ 1701b074b7bbSAlexander V. Chernikov cmd->arg1 = idx; 1702b074b7bbSAlexander V. Chernikov break; 1703b074b7bbSAlexander V. Chernikov case O_XMIT: 1704b074b7bbSAlexander V. Chernikov case O_RECV: 1705b074b7bbSAlexander V. Chernikov case O_VIA: 1706b074b7bbSAlexander V. Chernikov /* Interface table, possibly */ 1707b074b7bbSAlexander V. Chernikov cmdif = (ipfw_insn_if *)cmd; 1708b074b7bbSAlexander V. Chernikov cmdif->p.glob = idx; 1709b074b7bbSAlexander V. Chernikov break; 1710b074b7bbSAlexander V. Chernikov } 1711b074b7bbSAlexander V. Chernikov } 1712b074b7bbSAlexander V. Chernikov 1713ac35ff17SAlexander V. Chernikov /* 1714ac35ff17SAlexander V. Chernikov * Checks table name for validity. 1715ac35ff17SAlexander V. Chernikov * Enforce basic length checks, the rest 1716ac35ff17SAlexander V. Chernikov * should be done in userland. 1717ac35ff17SAlexander V. Chernikov * 1718ac35ff17SAlexander V. Chernikov * Returns 0 if name is considered valid. 1719ac35ff17SAlexander V. Chernikov */ 1720ac35ff17SAlexander V. Chernikov int 1721ac35ff17SAlexander V. Chernikov ipfw_check_table_name(char *name) 1722ac35ff17SAlexander V. Chernikov { 1723ac35ff17SAlexander V. Chernikov int nsize; 1724ac35ff17SAlexander V. Chernikov ipfw_obj_ntlv *ntlv = NULL; 1725ac35ff17SAlexander V. Chernikov 1726ac35ff17SAlexander V. Chernikov nsize = sizeof(ntlv->name); 1727ac35ff17SAlexander V. Chernikov 1728ac35ff17SAlexander V. Chernikov if (strnlen(name, nsize) == nsize) 1729ac35ff17SAlexander V. Chernikov return (EINVAL); 1730ac35ff17SAlexander V. Chernikov 1731ac35ff17SAlexander V. Chernikov if (name[0] == '\0') 1732ac35ff17SAlexander V. Chernikov return (EINVAL); 1733ac35ff17SAlexander V. Chernikov 1734ac35ff17SAlexander V. Chernikov /* 1735ac35ff17SAlexander V. Chernikov * TODO: do some more complicated checks 1736ac35ff17SAlexander V. Chernikov */ 1737ac35ff17SAlexander V. Chernikov 1738ac35ff17SAlexander V. Chernikov return (0); 1739ac35ff17SAlexander V. Chernikov } 1740ac35ff17SAlexander V. Chernikov 1741ac35ff17SAlexander V. Chernikov /* 1742ac35ff17SAlexander V. Chernikov * Find tablename TLV by @uid. 1743ac35ff17SAlexander V. Chernikov * Check @tlvs for valid data inside. 1744ac35ff17SAlexander V. Chernikov * 1745ac35ff17SAlexander V. Chernikov * Returns pointer to found TLV or NULL. 1746ac35ff17SAlexander V. Chernikov */ 1747ac35ff17SAlexander V. Chernikov static ipfw_obj_ntlv * 1748b074b7bbSAlexander V. Chernikov find_name_tlv(void *tlvs, int len, uint16_t uidx) 1749b074b7bbSAlexander V. Chernikov { 17509f7d47b0SAlexander V. Chernikov ipfw_obj_ntlv *ntlv; 1751b074b7bbSAlexander V. Chernikov uintptr_t pa, pe; 1752b074b7bbSAlexander V. Chernikov int l; 1753b074b7bbSAlexander V. Chernikov 1754b074b7bbSAlexander V. Chernikov pa = (uintptr_t)tlvs; 1755b074b7bbSAlexander V. Chernikov pe = pa + len; 1756b074b7bbSAlexander V. Chernikov l = 0; 1757b074b7bbSAlexander V. Chernikov for (; pa < pe; pa += l) { 17589f7d47b0SAlexander V. Chernikov ntlv = (ipfw_obj_ntlv *)pa; 1759b074b7bbSAlexander V. Chernikov l = ntlv->head.length; 1760ac35ff17SAlexander V. Chernikov 1761ac35ff17SAlexander V. Chernikov if (l != sizeof(*ntlv)) 1762ac35ff17SAlexander V. Chernikov return (NULL); 1763ac35ff17SAlexander V. Chernikov 1764563b5ab1SAlexander V. Chernikov if (ntlv->head.type != IPFW_TLV_TBL_NAME) 1765b074b7bbSAlexander V. Chernikov continue; 1766ac35ff17SAlexander V. Chernikov 1767b074b7bbSAlexander V. Chernikov if (ntlv->idx != uidx) 1768b074b7bbSAlexander V. Chernikov continue; 1769b074b7bbSAlexander V. Chernikov 1770ac35ff17SAlexander V. Chernikov if (ipfw_check_table_name(ntlv->name) != 0) 1771ac35ff17SAlexander V. Chernikov return (NULL); 1772ac35ff17SAlexander V. Chernikov 1773ac35ff17SAlexander V. Chernikov return (ntlv); 1774b074b7bbSAlexander V. Chernikov } 1775b074b7bbSAlexander V. Chernikov 1776b074b7bbSAlexander V. Chernikov return (NULL); 1777b074b7bbSAlexander V. Chernikov } 1778b074b7bbSAlexander V. Chernikov 1779ac35ff17SAlexander V. Chernikov /* 1780ac35ff17SAlexander V. Chernikov * Finds table config based on either legacy index 1781ac35ff17SAlexander V. Chernikov * or name in ntlv. 1782ac35ff17SAlexander V. Chernikov * Note @ti structure contains unchecked data from userland. 1783ac35ff17SAlexander V. Chernikov * 1784ac35ff17SAlexander V. Chernikov * Returns pointer to table_config or NULL. 1785ac35ff17SAlexander V. Chernikov */ 1786b074b7bbSAlexander V. Chernikov static struct table_config * 1787b074b7bbSAlexander V. Chernikov find_table(struct namedobj_instance *ni, struct tid_info *ti) 1788b074b7bbSAlexander V. Chernikov { 1789b074b7bbSAlexander V. Chernikov char *name, bname[16]; 1790b074b7bbSAlexander V. Chernikov struct named_object *no; 1791ac35ff17SAlexander V. Chernikov ipfw_obj_ntlv *ntlv; 1792ac35ff17SAlexander V. Chernikov uint32_t set; 1793b074b7bbSAlexander V. Chernikov 1794b074b7bbSAlexander V. Chernikov if (ti->tlvs != NULL) { 1795ac35ff17SAlexander V. Chernikov ntlv = find_name_tlv(ti->tlvs, ti->tlen, ti->uidx); 1796ac35ff17SAlexander V. Chernikov if (ntlv == NULL) 1797b074b7bbSAlexander V. Chernikov return (NULL); 1798ac35ff17SAlexander V. Chernikov name = ntlv->name; 1799ac35ff17SAlexander V. Chernikov set = ntlv->set; 1800b074b7bbSAlexander V. Chernikov } else { 1801b074b7bbSAlexander V. Chernikov snprintf(bname, sizeof(bname), "%d", ti->uidx); 1802b074b7bbSAlexander V. Chernikov name = bname; 1803ac35ff17SAlexander V. Chernikov set = 0; 1804b074b7bbSAlexander V. Chernikov } 1805b074b7bbSAlexander V. Chernikov 1806ac35ff17SAlexander V. Chernikov no = ipfw_objhash_lookup_name(ni, set, name); 1807b074b7bbSAlexander V. Chernikov 1808b074b7bbSAlexander V. Chernikov return ((struct table_config *)no); 1809b074b7bbSAlexander V. Chernikov } 1810b074b7bbSAlexander V. Chernikov 1811b074b7bbSAlexander V. Chernikov static struct table_config * 181268394ec8SAlexander V. Chernikov alloc_table_config(struct ip_fw_chain *ch, struct tid_info *ti, 1813db785d31SAlexander V. Chernikov struct table_algo *ta, char *aname, uint8_t vtype) 1814b074b7bbSAlexander V. Chernikov { 1815b074b7bbSAlexander V. Chernikov char *name, bname[16]; 1816b074b7bbSAlexander V. Chernikov struct table_config *tc; 1817b074b7bbSAlexander V. Chernikov int error; 1818ac35ff17SAlexander V. Chernikov ipfw_obj_ntlv *ntlv; 1819ac35ff17SAlexander V. Chernikov uint32_t set; 1820b074b7bbSAlexander V. Chernikov 1821b074b7bbSAlexander V. Chernikov if (ti->tlvs != NULL) { 1822ac35ff17SAlexander V. Chernikov ntlv = find_name_tlv(ti->tlvs, ti->tlen, ti->uidx); 1823ac35ff17SAlexander V. Chernikov if (ntlv == NULL) 1824b074b7bbSAlexander V. Chernikov return (NULL); 1825ac35ff17SAlexander V. Chernikov name = ntlv->name; 1826ac35ff17SAlexander V. Chernikov set = ntlv->set; 1827b074b7bbSAlexander V. Chernikov } else { 1828b074b7bbSAlexander V. Chernikov snprintf(bname, sizeof(bname), "%d", ti->uidx); 1829b074b7bbSAlexander V. Chernikov name = bname; 1830ac35ff17SAlexander V. Chernikov set = 0; 1831b074b7bbSAlexander V. Chernikov } 1832b074b7bbSAlexander V. Chernikov 1833b074b7bbSAlexander V. Chernikov tc = malloc(sizeof(struct table_config), M_IPFW, M_WAITOK | M_ZERO); 1834b074b7bbSAlexander V. Chernikov tc->no.name = tc->tablename; 1835b074b7bbSAlexander V. Chernikov tc->no.type = ti->type; 1836ac35ff17SAlexander V. Chernikov tc->no.set = set; 18379f7d47b0SAlexander V. Chernikov tc->ta = ta; 1838b074b7bbSAlexander V. Chernikov strlcpy(tc->tablename, name, sizeof(tc->tablename)); 1839ac35ff17SAlexander V. Chernikov /* Set default value type to u32 for compability reasons */ 1840db785d31SAlexander V. Chernikov if (vtype == 0) 1841ac35ff17SAlexander V. Chernikov tc->vtype = IPFW_VTYPE_U32; 1842db785d31SAlexander V. Chernikov else 1843db785d31SAlexander V. Chernikov tc->vtype = vtype; 1844b074b7bbSAlexander V. Chernikov 1845b074b7bbSAlexander V. Chernikov if (ti->tlvs == NULL) { 1846b074b7bbSAlexander V. Chernikov tc->no.compat = 1; 1847b074b7bbSAlexander V. Chernikov tc->no.uidx = ti->uidx; 1848b074b7bbSAlexander V. Chernikov } 1849b074b7bbSAlexander V. Chernikov 1850b074b7bbSAlexander V. Chernikov /* Preallocate data structures for new tables */ 185168394ec8SAlexander V. Chernikov error = ta->init(ch, &tc->astate, &tc->ti, aname); 1852b074b7bbSAlexander V. Chernikov if (error != 0) { 1853b074b7bbSAlexander V. Chernikov free(tc, M_IPFW); 1854b074b7bbSAlexander V. Chernikov return (NULL); 1855b074b7bbSAlexander V. Chernikov } 1856b074b7bbSAlexander V. Chernikov 1857b074b7bbSAlexander V. Chernikov return (tc); 1858b074b7bbSAlexander V. Chernikov } 1859b074b7bbSAlexander V. Chernikov 1860b074b7bbSAlexander V. Chernikov static void 1861b074b7bbSAlexander V. Chernikov free_table_config(struct namedobj_instance *ni, struct table_config *tc) 1862b074b7bbSAlexander V. Chernikov { 1863b074b7bbSAlexander V. Chernikov 1864b074b7bbSAlexander V. Chernikov if (tc->linked == 0) 186568394ec8SAlexander V. Chernikov tc->ta->destroy(tc->astate, &tc->ti); 1866b074b7bbSAlexander V. Chernikov 1867b074b7bbSAlexander V. Chernikov free(tc, M_IPFW); 1868b074b7bbSAlexander V. Chernikov } 1869b074b7bbSAlexander V. Chernikov 1870b074b7bbSAlexander V. Chernikov /* 1871b074b7bbSAlexander V. Chernikov * Links @tc to @chain table named instance. 1872b074b7bbSAlexander V. Chernikov * Sets appropriate type/states in @chain table info. 1873b074b7bbSAlexander V. Chernikov */ 1874b074b7bbSAlexander V. Chernikov static void 18759f7d47b0SAlexander V. Chernikov link_table(struct ip_fw_chain *ch, struct table_config *tc) 1876b074b7bbSAlexander V. Chernikov { 1877b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 18789f7d47b0SAlexander V. Chernikov struct table_info *ti; 1879b074b7bbSAlexander V. Chernikov uint16_t kidx; 1880b074b7bbSAlexander V. Chernikov 18819f7d47b0SAlexander V. Chernikov IPFW_UH_WLOCK_ASSERT(ch); 18829f7d47b0SAlexander V. Chernikov IPFW_WLOCK_ASSERT(ch); 1883b074b7bbSAlexander V. Chernikov 18849f7d47b0SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 1885b074b7bbSAlexander V. Chernikov kidx = tc->no.kidx; 1886b074b7bbSAlexander V. Chernikov 1887b074b7bbSAlexander V. Chernikov ipfw_objhash_add(ni, &tc->no); 18889f7d47b0SAlexander V. Chernikov 18899f7d47b0SAlexander V. Chernikov ti = KIDX_TO_TI(ch, kidx); 18909f7d47b0SAlexander V. Chernikov *ti = tc->ti; 1891b074b7bbSAlexander V. Chernikov 189268394ec8SAlexander V. Chernikov /* Notify algo on real @ti address */ 189368394ec8SAlexander V. Chernikov if (tc->ta->change_ti != NULL) 189468394ec8SAlexander V. Chernikov tc->ta->change_ti(tc->astate, ti); 189568394ec8SAlexander V. Chernikov 1896b074b7bbSAlexander V. Chernikov tc->linked = 1; 1897b074b7bbSAlexander V. Chernikov } 1898b074b7bbSAlexander V. Chernikov 1899b074b7bbSAlexander V. Chernikov /* 1900b074b7bbSAlexander V. Chernikov * Unlinks @tc from @chain table named instance. 1901b074b7bbSAlexander V. Chernikov * Zeroes states in @chain and stores them in @tc. 1902b074b7bbSAlexander V. Chernikov */ 1903b074b7bbSAlexander V. Chernikov static void 19049f7d47b0SAlexander V. Chernikov unlink_table(struct ip_fw_chain *ch, struct table_config *tc) 1905b074b7bbSAlexander V. Chernikov { 1906b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 19079f7d47b0SAlexander V. Chernikov struct table_info *ti; 1908b074b7bbSAlexander V. Chernikov uint16_t kidx; 1909b074b7bbSAlexander V. Chernikov 19109f7d47b0SAlexander V. Chernikov IPFW_UH_WLOCK_ASSERT(ch); 19119f7d47b0SAlexander V. Chernikov IPFW_WLOCK_ASSERT(ch); 1912b074b7bbSAlexander V. Chernikov 19139f7d47b0SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 1914b074b7bbSAlexander V. Chernikov kidx = tc->no.kidx; 1915b074b7bbSAlexander V. Chernikov 19169f7d47b0SAlexander V. Chernikov /* Clear state. @ti copy is already saved inside @tc */ 1917b074b7bbSAlexander V. Chernikov ipfw_objhash_del(ni, &tc->no); 19189f7d47b0SAlexander V. Chernikov ti = KIDX_TO_TI(ch, kidx); 19199f7d47b0SAlexander V. Chernikov memset(ti, 0, sizeof(struct table_info)); 1920b074b7bbSAlexander V. Chernikov tc->linked = 0; 192168394ec8SAlexander V. Chernikov 192268394ec8SAlexander V. Chernikov /* Notify algo on real @ti address */ 192368394ec8SAlexander V. Chernikov if (tc->ta->change_ti != NULL) 192468394ec8SAlexander V. Chernikov tc->ta->change_ti(tc->astate, NULL); 1925b074b7bbSAlexander V. Chernikov } 1926b074b7bbSAlexander V. Chernikov 1927b074b7bbSAlexander V. Chernikov /* 1928b074b7bbSAlexander V. Chernikov * Finds named object by @uidx number. 1929b074b7bbSAlexander V. Chernikov * Refs found object, allocate new index for non-existing object. 19309490a627SAlexander V. Chernikov * Fills in @oib with userland/kernel indexes. 19319490a627SAlexander V. Chernikov * First free oidx pointer is saved back in @oib. 1932b074b7bbSAlexander V. Chernikov * 1933b074b7bbSAlexander V. Chernikov * Returns 0 on success. 1934b074b7bbSAlexander V. Chernikov */ 1935b074b7bbSAlexander V. Chernikov static int 19369490a627SAlexander V. Chernikov bind_table_rule(struct ip_fw_chain *ch, struct ip_fw *rule, 19379490a627SAlexander V. Chernikov struct rule_check_info *ci, struct obj_idx **oib, struct tid_info *ti) 1938b074b7bbSAlexander V. Chernikov { 1939b074b7bbSAlexander V. Chernikov struct table_config *tc; 19409490a627SAlexander V. Chernikov struct namedobj_instance *ni; 19419490a627SAlexander V. Chernikov struct named_object *no; 19429490a627SAlexander V. Chernikov int error, l, cmdlen; 19439490a627SAlexander V. Chernikov ipfw_insn *cmd; 19449490a627SAlexander V. Chernikov struct obj_idx *pidx, *p; 19459490a627SAlexander V. Chernikov 19469490a627SAlexander V. Chernikov pidx = *oib; 19479490a627SAlexander V. Chernikov l = rule->cmd_len; 19489490a627SAlexander V. Chernikov cmd = rule->cmd; 19499490a627SAlexander V. Chernikov cmdlen = 0; 19509490a627SAlexander V. Chernikov error = 0; 19519490a627SAlexander V. Chernikov 19529490a627SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 19539490a627SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 19549490a627SAlexander V. Chernikov 19559490a627SAlexander V. Chernikov for ( ; l > 0 ; l -= cmdlen, cmd += cmdlen) { 19569490a627SAlexander V. Chernikov cmdlen = F_LEN(cmd); 19579490a627SAlexander V. Chernikov 19589490a627SAlexander V. Chernikov if (classify_table_opcode(cmd, &ti->uidx, &ti->type) != 0) 19599490a627SAlexander V. Chernikov continue; 1960b074b7bbSAlexander V. Chernikov 1961b074b7bbSAlexander V. Chernikov pidx->uidx = ti->uidx; 1962b074b7bbSAlexander V. Chernikov pidx->type = ti->type; 1963b074b7bbSAlexander V. Chernikov 19649490a627SAlexander V. Chernikov if ((tc = find_table(ni, ti)) != NULL) { 19659490a627SAlexander V. Chernikov if (tc->no.type != ti->type) { 19669490a627SAlexander V. Chernikov /* Incompatible types */ 19679490a627SAlexander V. Chernikov error = EINVAL; 19689490a627SAlexander V. Chernikov break; 19699490a627SAlexander V. Chernikov } 19709f7d47b0SAlexander V. Chernikov 19719490a627SAlexander V. Chernikov /* Reference found table and save kidx */ 19729490a627SAlexander V. Chernikov tc->no.refcnt++; 19739490a627SAlexander V. Chernikov pidx->kidx = tc->no.kidx; 19749490a627SAlexander V. Chernikov pidx++; 19759490a627SAlexander V. Chernikov continue; 19769490a627SAlexander V. Chernikov } 19779490a627SAlexander V. Chernikov 19789490a627SAlexander V. Chernikov /* Table not found. Allocate new index and save for later */ 1979ac35ff17SAlexander V. Chernikov if (ipfw_objhash_alloc_idx(ni, &pidx->kidx) != 0) { 1980ac35ff17SAlexander V. Chernikov printf("Unable to allocate table %s index in set %u." 1981b074b7bbSAlexander V. Chernikov " Consider increasing net.inet.ip.fw.tables_max", 1982ac35ff17SAlexander V. Chernikov "", ti->set); 19839490a627SAlexander V. Chernikov error = EBUSY; 19849490a627SAlexander V. Chernikov break; 1985b074b7bbSAlexander V. Chernikov } 1986b074b7bbSAlexander V. Chernikov 1987b074b7bbSAlexander V. Chernikov ci->new_tables++; 19889490a627SAlexander V. Chernikov pidx->new = 1; 19899490a627SAlexander V. Chernikov pidx++; 1990b074b7bbSAlexander V. Chernikov } 1991b074b7bbSAlexander V. Chernikov 19929490a627SAlexander V. Chernikov if (error != 0) { 19939490a627SAlexander V. Chernikov /* Unref everything we have already done */ 19949490a627SAlexander V. Chernikov for (p = *oib; p < pidx; p++) { 19959490a627SAlexander V. Chernikov if (p->new != 0) { 1996ac35ff17SAlexander V. Chernikov ipfw_objhash_free_idx(ni, p->kidx); 19979490a627SAlexander V. Chernikov continue; 19989490a627SAlexander V. Chernikov } 1999b074b7bbSAlexander V. Chernikov 20009490a627SAlexander V. Chernikov /* Find & unref by existing idx */ 2001ac35ff17SAlexander V. Chernikov no = ipfw_objhash_lookup_kidx(ni, p->kidx); 20029490a627SAlexander V. Chernikov KASSERT(no != NULL, ("Ref'd table %d disappeared", 20039490a627SAlexander V. Chernikov p->kidx)); 2004b074b7bbSAlexander V. Chernikov 20059490a627SAlexander V. Chernikov no->refcnt--; 20069490a627SAlexander V. Chernikov } 20079490a627SAlexander V. Chernikov } 20089490a627SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 2009b074b7bbSAlexander V. Chernikov 20109490a627SAlexander V. Chernikov *oib = pidx; 20119490a627SAlexander V. Chernikov 20129490a627SAlexander V. Chernikov return (error); 2013b074b7bbSAlexander V. Chernikov } 2014b074b7bbSAlexander V. Chernikov 2015b074b7bbSAlexander V. Chernikov /* 2016b074b7bbSAlexander V. Chernikov * Compatibility function for old ipfw(8) binaries. 2017b074b7bbSAlexander V. Chernikov * Rewrites table kernel indices with userland ones. 2018b074b7bbSAlexander V. Chernikov * Works for \d+ talbes only (e.g. for tables, converted 2019b074b7bbSAlexander V. Chernikov * from old numbered system calls). 2020b074b7bbSAlexander V. Chernikov * 2021b074b7bbSAlexander V. Chernikov * Returns 0 on success. 2022b074b7bbSAlexander V. Chernikov * Raises error on any other tables. 2023b074b7bbSAlexander V. Chernikov */ 2024b074b7bbSAlexander V. Chernikov int 20257e767c79SAlexander V. Chernikov ipfw_rewrite_table_kidx(struct ip_fw_chain *chain, struct ip_fw_rule0 *rule) 2026b074b7bbSAlexander V. Chernikov { 20271832a7b3SAlexander V. Chernikov int cmdlen, error, l; 2028b074b7bbSAlexander V. Chernikov ipfw_insn *cmd; 20291832a7b3SAlexander V. Chernikov uint16_t kidx, uidx; 2030b074b7bbSAlexander V. Chernikov uint8_t type; 2031b074b7bbSAlexander V. Chernikov struct named_object *no; 2032b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 2033b074b7bbSAlexander V. Chernikov 2034b074b7bbSAlexander V. Chernikov ni = CHAIN_TO_NI(chain); 20351832a7b3SAlexander V. Chernikov error = 0; 2036b074b7bbSAlexander V. Chernikov 2037b074b7bbSAlexander V. Chernikov l = rule->cmd_len; 2038b074b7bbSAlexander V. Chernikov cmd = rule->cmd; 2039b074b7bbSAlexander V. Chernikov cmdlen = 0; 2040b074b7bbSAlexander V. Chernikov for ( ; l > 0 ; l -= cmdlen, cmd += cmdlen) { 2041b074b7bbSAlexander V. Chernikov cmdlen = F_LEN(cmd); 2042b074b7bbSAlexander V. Chernikov 2043b074b7bbSAlexander V. Chernikov if (classify_table_opcode(cmd, &kidx, &type) != 0) 2044b074b7bbSAlexander V. Chernikov continue; 2045b074b7bbSAlexander V. Chernikov 2046ac35ff17SAlexander V. Chernikov if ((no = ipfw_objhash_lookup_kidx(ni, kidx)) == NULL) 2047b074b7bbSAlexander V. Chernikov return (1); 2048b074b7bbSAlexander V. Chernikov 20491832a7b3SAlexander V. Chernikov uidx = no->uidx; 20501832a7b3SAlexander V. Chernikov if (no->compat == 0) { 2051b074b7bbSAlexander V. Chernikov 20521832a7b3SAlexander V. Chernikov /* 20531832a7b3SAlexander V. Chernikov * We are called via legacy opcode. 20541832a7b3SAlexander V. Chernikov * Save error and show table as fake number 20551832a7b3SAlexander V. Chernikov * not to make ipfw(8) hang. 20561832a7b3SAlexander V. Chernikov */ 20571832a7b3SAlexander V. Chernikov uidx = 65535; 20581832a7b3SAlexander V. Chernikov error = 2; 2059b074b7bbSAlexander V. Chernikov } 2060b074b7bbSAlexander V. Chernikov 20611832a7b3SAlexander V. Chernikov update_table_opcode(cmd, uidx); 20621832a7b3SAlexander V. Chernikov } 20631832a7b3SAlexander V. Chernikov 20641832a7b3SAlexander V. Chernikov return (error); 2065b074b7bbSAlexander V. Chernikov } 2066b074b7bbSAlexander V. Chernikov 2067563b5ab1SAlexander V. Chernikov /* 2068563b5ab1SAlexander V. Chernikov * Sets every table kidx in @bmask which is used in rule @rule. 2069563b5ab1SAlexander V. Chernikov * 2070563b5ab1SAlexander V. Chernikov * Returns number of newly-referenced tables. 2071563b5ab1SAlexander V. Chernikov */ 2072563b5ab1SAlexander V. Chernikov int 2073563b5ab1SAlexander V. Chernikov ipfw_mark_table_kidx(struct ip_fw_chain *chain, struct ip_fw *rule, 2074563b5ab1SAlexander V. Chernikov uint32_t *bmask) 2075563b5ab1SAlexander V. Chernikov { 2076563b5ab1SAlexander V. Chernikov int cmdlen, l, count; 2077563b5ab1SAlexander V. Chernikov ipfw_insn *cmd; 2078563b5ab1SAlexander V. Chernikov uint16_t kidx; 2079563b5ab1SAlexander V. Chernikov uint8_t type; 2080563b5ab1SAlexander V. Chernikov 2081563b5ab1SAlexander V. Chernikov l = rule->cmd_len; 2082563b5ab1SAlexander V. Chernikov cmd = rule->cmd; 2083563b5ab1SAlexander V. Chernikov cmdlen = 0; 2084563b5ab1SAlexander V. Chernikov count = 0; 2085563b5ab1SAlexander V. Chernikov for ( ; l > 0 ; l -= cmdlen, cmd += cmdlen) { 2086563b5ab1SAlexander V. Chernikov cmdlen = F_LEN(cmd); 2087563b5ab1SAlexander V. Chernikov 2088563b5ab1SAlexander V. Chernikov if (classify_table_opcode(cmd, &kidx, &type) != 0) 2089563b5ab1SAlexander V. Chernikov continue; 2090563b5ab1SAlexander V. Chernikov 2091563b5ab1SAlexander V. Chernikov if ((bmask[kidx / 32] & (1 << (kidx % 32))) == 0) 2092563b5ab1SAlexander V. Chernikov count++; 2093563b5ab1SAlexander V. Chernikov 2094563b5ab1SAlexander V. Chernikov bmask[kidx / 32] |= 1 << (kidx % 32); 2095563b5ab1SAlexander V. Chernikov } 2096563b5ab1SAlexander V. Chernikov 2097563b5ab1SAlexander V. Chernikov return (count); 2098563b5ab1SAlexander V. Chernikov } 2099563b5ab1SAlexander V. Chernikov 2100563b5ab1SAlexander V. Chernikov 2101b074b7bbSAlexander V. Chernikov 2102b074b7bbSAlexander V. Chernikov /* 2103b074b7bbSAlexander V. Chernikov * Checks is opcode is referencing table of appropriate type. 2104b074b7bbSAlexander V. Chernikov * Adds reference count for found table if true. 2105b074b7bbSAlexander V. Chernikov * Rewrites user-supplied opcode values with kernel ones. 2106b074b7bbSAlexander V. Chernikov * 2107b074b7bbSAlexander V. Chernikov * Returns 0 on success and appropriate error code otherwise. 2108b074b7bbSAlexander V. Chernikov */ 2109b074b7bbSAlexander V. Chernikov int 2110b074b7bbSAlexander V. Chernikov ipfw_rewrite_table_uidx(struct ip_fw_chain *chain, 2111b074b7bbSAlexander V. Chernikov struct rule_check_info *ci) 2112b074b7bbSAlexander V. Chernikov { 2113b074b7bbSAlexander V. Chernikov int cmdlen, error, ftype, l; 2114b074b7bbSAlexander V. Chernikov ipfw_insn *cmd; 2115b074b7bbSAlexander V. Chernikov uint16_t uidx; 2116b074b7bbSAlexander V. Chernikov uint8_t type; 2117b074b7bbSAlexander V. Chernikov struct table_config *tc; 21189f7d47b0SAlexander V. Chernikov struct table_algo *ta; 2119b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 2120b074b7bbSAlexander V. Chernikov struct named_object *no, *no_n, *no_tmp; 21219490a627SAlexander V. Chernikov struct obj_idx *p, *pidx_first, *pidx_last; 2122b074b7bbSAlexander V. Chernikov struct namedobjects_head nh; 2123b074b7bbSAlexander V. Chernikov struct tid_info ti; 2124b074b7bbSAlexander V. Chernikov 2125b074b7bbSAlexander V. Chernikov ni = CHAIN_TO_NI(chain); 2126b074b7bbSAlexander V. Chernikov 21279490a627SAlexander V. Chernikov /* Prepare queue to store configs */ 21289490a627SAlexander V. Chernikov TAILQ_INIT(&nh); 21299490a627SAlexander V. Chernikov 2130b074b7bbSAlexander V. Chernikov /* 2131b074b7bbSAlexander V. Chernikov * Prepare an array for storing opcode indices. 2132b074b7bbSAlexander V. Chernikov * Use stack allocation by default. 2133b074b7bbSAlexander V. Chernikov */ 2134b074b7bbSAlexander V. Chernikov if (ci->table_opcodes <= (sizeof(ci->obuf)/sizeof(ci->obuf[0]))) { 2135b074b7bbSAlexander V. Chernikov /* Stack */ 21369490a627SAlexander V. Chernikov pidx_first = ci->obuf; 2137b074b7bbSAlexander V. Chernikov } else 21389490a627SAlexander V. Chernikov pidx_first = malloc(ci->table_opcodes * sizeof(struct obj_idx), 2139b074b7bbSAlexander V. Chernikov M_IPFW, M_WAITOK | M_ZERO); 2140b074b7bbSAlexander V. Chernikov 21419490a627SAlexander V. Chernikov pidx_last = pidx_first; 2142b074b7bbSAlexander V. Chernikov error = 0; 2143b074b7bbSAlexander V. Chernikov 2144b074b7bbSAlexander V. Chernikov type = 0; 2145b074b7bbSAlexander V. Chernikov ftype = 0; 2146b074b7bbSAlexander V. Chernikov 2147b074b7bbSAlexander V. Chernikov memset(&ti, 0, sizeof(ti)); 21481832a7b3SAlexander V. Chernikov 21491832a7b3SAlexander V. Chernikov /* 21501832a7b3SAlexander V. Chernikov * Use default set for looking up tables (old way) or 21511832a7b3SAlexander V. Chernikov * use set rule is assigned to (new way). 21521832a7b3SAlexander V. Chernikov */ 21531832a7b3SAlexander V. Chernikov ti.set = (V_fw_tables_sets != 0) ? ci->krule->set : 0; 21546c2997ffSAlexander V. Chernikov if (ci->ctlv != NULL) { 21556c2997ffSAlexander V. Chernikov ti.tlvs = (void *)(ci->ctlv + 1); 21566c2997ffSAlexander V. Chernikov ti.tlen = ci->ctlv->head.length - sizeof(ipfw_obj_ctlv); 21576c2997ffSAlexander V. Chernikov } 2158b074b7bbSAlexander V. Chernikov 2159b074b7bbSAlexander V. Chernikov /* 21609490a627SAlexander V. Chernikov * Stage 1: reference existing tables, determine number 21619490a627SAlexander V. Chernikov * of tables we need to allocate and allocate indexes for each. 2162b074b7bbSAlexander V. Chernikov */ 21639490a627SAlexander V. Chernikov error = bind_table_rule(chain, ci->krule, ci, &pidx_last, &ti); 2164b074b7bbSAlexander V. Chernikov 2165b074b7bbSAlexander V. Chernikov if (error != 0) { 21669490a627SAlexander V. Chernikov if (pidx_first != ci->obuf) 21679490a627SAlexander V. Chernikov free(pidx_first, M_IPFW); 2168b074b7bbSAlexander V. Chernikov 2169b074b7bbSAlexander V. Chernikov return (error); 2170b074b7bbSAlexander V. Chernikov } 2171b074b7bbSAlexander V. Chernikov 2172b074b7bbSAlexander V. Chernikov /* 2173b074b7bbSAlexander V. Chernikov * Stage 2: allocate table configs for every non-existent table 2174b074b7bbSAlexander V. Chernikov */ 2175b074b7bbSAlexander V. Chernikov 21769f7d47b0SAlexander V. Chernikov if (ci->new_tables > 0) { 21779490a627SAlexander V. Chernikov for (p = pidx_first; p < pidx_last; p++) { 2178b074b7bbSAlexander V. Chernikov if (p->new == 0) 2179b074b7bbSAlexander V. Chernikov continue; 2180b074b7bbSAlexander V. Chernikov 2181b074b7bbSAlexander V. Chernikov ti.uidx = p->uidx; 2182b074b7bbSAlexander V. Chernikov ti.type = p->type; 21839f7d47b0SAlexander V. Chernikov ti.atype = 0; 2184b074b7bbSAlexander V. Chernikov 21859490a627SAlexander V. Chernikov ta = find_table_algo(CHAIN_TO_TCFG(chain), &ti, NULL); 21869f7d47b0SAlexander V. Chernikov if (ta == NULL) { 21879f7d47b0SAlexander V. Chernikov error = ENOTSUP; 21889f7d47b0SAlexander V. Chernikov goto free; 21899f7d47b0SAlexander V. Chernikov } 219068394ec8SAlexander V. Chernikov tc = alloc_table_config(chain, &ti, ta, NULL, 219168394ec8SAlexander V. Chernikov IPFW_VTYPE_U32); 2192b074b7bbSAlexander V. Chernikov 2193b074b7bbSAlexander V. Chernikov if (tc == NULL) { 2194b074b7bbSAlexander V. Chernikov error = ENOMEM; 2195b074b7bbSAlexander V. Chernikov goto free; 2196b074b7bbSAlexander V. Chernikov } 2197b074b7bbSAlexander V. Chernikov 2198b074b7bbSAlexander V. Chernikov tc->no.kidx = p->kidx; 2199b074b7bbSAlexander V. Chernikov tc->no.refcnt = 1; 2200b074b7bbSAlexander V. Chernikov 2201b074b7bbSAlexander V. Chernikov /* Add to list */ 2202b074b7bbSAlexander V. Chernikov TAILQ_INSERT_TAIL(&nh, &tc->no, nn_next); 2203b074b7bbSAlexander V. Chernikov } 2204b074b7bbSAlexander V. Chernikov 2205b074b7bbSAlexander V. Chernikov /* 2206b074b7bbSAlexander V. Chernikov * Stage 2.1: Check if we're going to create 2 tables 2207b074b7bbSAlexander V. Chernikov * with the same name, but different table types. 2208b074b7bbSAlexander V. Chernikov */ 2209b074b7bbSAlexander V. Chernikov TAILQ_FOREACH(no, &nh, nn_next) { 2210b074b7bbSAlexander V. Chernikov TAILQ_FOREACH(no_tmp, &nh, nn_next) { 22119490a627SAlexander V. Chernikov if (ipfw_objhash_same_name(ni, no, no_tmp) == 0) 2212b074b7bbSAlexander V. Chernikov continue; 2213b074b7bbSAlexander V. Chernikov if (no->type != no_tmp->type) { 2214b074b7bbSAlexander V. Chernikov error = EINVAL; 2215b074b7bbSAlexander V. Chernikov goto free; 2216b074b7bbSAlexander V. Chernikov } 2217b074b7bbSAlexander V. Chernikov } 2218b074b7bbSAlexander V. Chernikov } 22199f7d47b0SAlexander V. Chernikov } 2220b074b7bbSAlexander V. Chernikov 22219f7d47b0SAlexander V. Chernikov IPFW_UH_WLOCK(chain); 22229f7d47b0SAlexander V. Chernikov 22239f7d47b0SAlexander V. Chernikov if (ci->new_tables > 0) { 2224b074b7bbSAlexander V. Chernikov /* 2225b074b7bbSAlexander V. Chernikov * Stage 3: link & reference new table configs 2226b074b7bbSAlexander V. Chernikov */ 2227b074b7bbSAlexander V. Chernikov 2228b074b7bbSAlexander V. Chernikov 2229b074b7bbSAlexander V. Chernikov /* 2230b074b7bbSAlexander V. Chernikov * Step 3.1: Check if some tables we need to create have been 2231b074b7bbSAlexander V. Chernikov * already created with different table type. 2232b074b7bbSAlexander V. Chernikov */ 2233b074b7bbSAlexander V. Chernikov 2234b074b7bbSAlexander V. Chernikov error = 0; 2235b074b7bbSAlexander V. Chernikov TAILQ_FOREACH_SAFE(no, &nh, nn_next, no_tmp) { 2236b074b7bbSAlexander V. Chernikov no_n = ipfw_objhash_lookup_name(ni, no->set, no->name); 2237b074b7bbSAlexander V. Chernikov if (no_n == NULL) 2238b074b7bbSAlexander V. Chernikov continue; 2239b074b7bbSAlexander V. Chernikov 2240b074b7bbSAlexander V. Chernikov if (no_n->type != no->type) { 2241b074b7bbSAlexander V. Chernikov error = EINVAL; 2242b074b7bbSAlexander V. Chernikov break; 2243b074b7bbSAlexander V. Chernikov } 2244b074b7bbSAlexander V. Chernikov 2245b074b7bbSAlexander V. Chernikov } 2246b074b7bbSAlexander V. Chernikov 2247b074b7bbSAlexander V. Chernikov if (error != 0) { 2248b074b7bbSAlexander V. Chernikov /* 2249b074b7bbSAlexander V. Chernikov * Someone has allocated table with different table type. 2250b074b7bbSAlexander V. Chernikov * We have to rollback everything. 2251b074b7bbSAlexander V. Chernikov */ 2252b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(chain); 2253b074b7bbSAlexander V. Chernikov goto free; 2254b074b7bbSAlexander V. Chernikov } 2255b074b7bbSAlexander V. Chernikov 2256b074b7bbSAlexander V. Chernikov /* 22579f7d47b0SAlexander V. Chernikov * Attach new tables. 22589f7d47b0SAlexander V. Chernikov * We need to set table pointers for each new table, 2259b074b7bbSAlexander V. Chernikov * so we have to acquire main WLOCK. 2260b074b7bbSAlexander V. Chernikov */ 2261b074b7bbSAlexander V. Chernikov IPFW_WLOCK(chain); 2262b074b7bbSAlexander V. Chernikov TAILQ_FOREACH_SAFE(no, &nh, nn_next, no_tmp) { 2263b074b7bbSAlexander V. Chernikov no_n = ipfw_objhash_lookup_name(ni, no->set, no->name); 2264b074b7bbSAlexander V. Chernikov 22659490a627SAlexander V. Chernikov if (no_n == NULL) { 22669490a627SAlexander V. Chernikov /* New table. Attach to runtime hash */ 22679490a627SAlexander V. Chernikov TAILQ_REMOVE(&nh, no, nn_next); 22689490a627SAlexander V. Chernikov link_table(chain, (struct table_config *)no); 2269b074b7bbSAlexander V. Chernikov continue; 2270b074b7bbSAlexander V. Chernikov } 2271b074b7bbSAlexander V. Chernikov 22729490a627SAlexander V. Chernikov /* 22739490a627SAlexander V. Chernikov * Newly-allocated table with the same type. 22749490a627SAlexander V. Chernikov * Reference it and update out @pidx array 22759490a627SAlexander V. Chernikov * rewrite info. 22769490a627SAlexander V. Chernikov */ 22779490a627SAlexander V. Chernikov no_n->refcnt++; 22789490a627SAlexander V. Chernikov /* Keep oib array in sync: update kidx */ 22799490a627SAlexander V. Chernikov for (p = pidx_first; p < pidx_last; p++) { 22809490a627SAlexander V. Chernikov if (p->kidx != no->kidx) 22819490a627SAlexander V. Chernikov continue; 22829490a627SAlexander V. Chernikov /* Update kidx */ 22839490a627SAlexander V. Chernikov p->kidx = no_n->kidx; 22849490a627SAlexander V. Chernikov break; 22859490a627SAlexander V. Chernikov } 2286b074b7bbSAlexander V. Chernikov } 2287b074b7bbSAlexander V. Chernikov IPFW_WUNLOCK(chain); 22889f7d47b0SAlexander V. Chernikov } 2289b074b7bbSAlexander V. Chernikov 2290b074b7bbSAlexander V. Chernikov /* Perform rule rewrite */ 2291b074b7bbSAlexander V. Chernikov l = ci->krule->cmd_len; 2292b074b7bbSAlexander V. Chernikov cmd = ci->krule->cmd; 2293b074b7bbSAlexander V. Chernikov cmdlen = 0; 22949490a627SAlexander V. Chernikov p = pidx_first; 2295b074b7bbSAlexander V. Chernikov for ( ; l > 0 ; l -= cmdlen, cmd += cmdlen) { 2296b074b7bbSAlexander V. Chernikov cmdlen = F_LEN(cmd); 2297b074b7bbSAlexander V. Chernikov 2298b074b7bbSAlexander V. Chernikov if (classify_table_opcode(cmd, &uidx, &type) != 0) 2299b074b7bbSAlexander V. Chernikov continue; 23009490a627SAlexander V. Chernikov update_table_opcode(cmd, p->kidx); 23019490a627SAlexander V. Chernikov p++; 2302b074b7bbSAlexander V. Chernikov } 2303b074b7bbSAlexander V. Chernikov 2304b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(chain); 2305b074b7bbSAlexander V. Chernikov 2306b074b7bbSAlexander V. Chernikov error = 0; 2307b074b7bbSAlexander V. Chernikov 2308b074b7bbSAlexander V. Chernikov /* 2309b074b7bbSAlexander V. Chernikov * Stage 4: free resources 2310b074b7bbSAlexander V. Chernikov */ 2311b074b7bbSAlexander V. Chernikov free: 23129490a627SAlexander V. Chernikov if (!TAILQ_EMPTY(&nh)) { 23139490a627SAlexander V. Chernikov /* Free indexes first */ 23149490a627SAlexander V. Chernikov IPFW_UH_WLOCK(chain); 23159490a627SAlexander V. Chernikov TAILQ_FOREACH_SAFE(no, &nh, nn_next, no_tmp) { 2316ac35ff17SAlexander V. Chernikov ipfw_objhash_free_idx(ni, no->kidx); 23179490a627SAlexander V. Chernikov } 23189490a627SAlexander V. Chernikov IPFW_UH_WUNLOCK(chain); 23199490a627SAlexander V. Chernikov /* Free configs */ 2320b074b7bbSAlexander V. Chernikov TAILQ_FOREACH_SAFE(no, &nh, nn_next, no_tmp) 2321b074b7bbSAlexander V. Chernikov free_table_config(ni, tc); 23229490a627SAlexander V. Chernikov } 2323b074b7bbSAlexander V. Chernikov 23249490a627SAlexander V. Chernikov if (pidx_first != ci->obuf) 23259490a627SAlexander V. Chernikov free(pidx_first, M_IPFW); 2326b074b7bbSAlexander V. Chernikov 2327b074b7bbSAlexander V. Chernikov return (error); 2328b074b7bbSAlexander V. Chernikov } 2329b074b7bbSAlexander V. Chernikov 2330b074b7bbSAlexander V. Chernikov /* 2331b074b7bbSAlexander V. Chernikov * Remove references from every table used in @rule. 2332b074b7bbSAlexander V. Chernikov */ 2333b074b7bbSAlexander V. Chernikov void 2334b074b7bbSAlexander V. Chernikov ipfw_unbind_table_rule(struct ip_fw_chain *chain, struct ip_fw *rule) 2335b074b7bbSAlexander V. Chernikov { 2336b074b7bbSAlexander V. Chernikov int cmdlen, l; 2337b074b7bbSAlexander V. Chernikov ipfw_insn *cmd; 2338b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 2339b074b7bbSAlexander V. Chernikov struct named_object *no; 2340b074b7bbSAlexander V. Chernikov uint16_t kidx; 2341b074b7bbSAlexander V. Chernikov uint8_t type; 2342b074b7bbSAlexander V. Chernikov 2343b074b7bbSAlexander V. Chernikov ni = CHAIN_TO_NI(chain); 2344b074b7bbSAlexander V. Chernikov 2345b074b7bbSAlexander V. Chernikov l = rule->cmd_len; 2346b074b7bbSAlexander V. Chernikov cmd = rule->cmd; 2347b074b7bbSAlexander V. Chernikov cmdlen = 0; 2348b074b7bbSAlexander V. Chernikov for ( ; l > 0 ; l -= cmdlen, cmd += cmdlen) { 2349b074b7bbSAlexander V. Chernikov cmdlen = F_LEN(cmd); 2350b074b7bbSAlexander V. Chernikov 2351b074b7bbSAlexander V. Chernikov if (classify_table_opcode(cmd, &kidx, &type) != 0) 2352b074b7bbSAlexander V. Chernikov continue; 2353b074b7bbSAlexander V. Chernikov 2354ac35ff17SAlexander V. Chernikov no = ipfw_objhash_lookup_kidx(ni, kidx); 2355b074b7bbSAlexander V. Chernikov 2356b074b7bbSAlexander V. Chernikov KASSERT(no != NULL, ("table id %d not found", kidx)); 2357b074b7bbSAlexander V. Chernikov KASSERT(no->type == type, ("wrong type %d (%d) for table id %d", 2358b074b7bbSAlexander V. Chernikov no->type, type, kidx)); 2359b074b7bbSAlexander V. Chernikov KASSERT(no->refcnt > 0, ("refcount for table %d is %d", 2360b074b7bbSAlexander V. Chernikov kidx, no->refcnt)); 2361b074b7bbSAlexander V. Chernikov 2362b074b7bbSAlexander V. Chernikov no->refcnt--; 2363b074b7bbSAlexander V. Chernikov } 2364b074b7bbSAlexander V. Chernikov } 2365b074b7bbSAlexander V. Chernikov 2366b074b7bbSAlexander V. Chernikov 2367b074b7bbSAlexander V. Chernikov /* 2368b074b7bbSAlexander V. Chernikov * Removes table bindings for every rule in rule chain @head. 2369b074b7bbSAlexander V. Chernikov */ 2370b074b7bbSAlexander V. Chernikov void 2371b074b7bbSAlexander V. Chernikov ipfw_unbind_table_list(struct ip_fw_chain *chain, struct ip_fw *head) 2372b074b7bbSAlexander V. Chernikov { 2373b074b7bbSAlexander V. Chernikov struct ip_fw *rule; 2374b074b7bbSAlexander V. Chernikov 2375b074b7bbSAlexander V. Chernikov while ((rule = head) != NULL) { 2376b074b7bbSAlexander V. Chernikov head = head->x_next; 2377b074b7bbSAlexander V. Chernikov ipfw_unbind_table_rule(chain, rule); 2378b074b7bbSAlexander V. Chernikov } 2379b074b7bbSAlexander V. Chernikov } 2380b074b7bbSAlexander V. Chernikov 2381b074b7bbSAlexander V. Chernikov 23823b3a8eb9SGleb Smirnoff /* end of file */ 2383