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 */ 809f7d47b0SAlexander V. Chernikov uint16_t spare0; 81b074b7bbSAlexander V. Chernikov uint32_t count; /* Number of records */ 82b074b7bbSAlexander V. Chernikov char tablename[64]; /* table name */ 839f7d47b0SAlexander V. Chernikov struct table_algo *ta; /* Callbacks for given algo */ 849f7d47b0SAlexander V. Chernikov void *astate; /* algorithm state */ 859f7d47b0SAlexander V. Chernikov struct table_info ti; /* data to put to table_info */ 86b074b7bbSAlexander V. Chernikov }; 87b074b7bbSAlexander V. Chernikov #define TABLE_SET(set) ((V_fw_tables_sets != 0) ? set : 0) 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); 97b074b7bbSAlexander V. Chernikov static struct table_config *alloc_table_config(struct namedobj_instance *ni, 989490a627SAlexander V. Chernikov struct tid_info *ti, struct table_algo *ta, char *adata); 99b074b7bbSAlexander V. Chernikov static void free_table_config(struct namedobj_instance *ni, 100b074b7bbSAlexander V. Chernikov struct table_config *tc); 101b074b7bbSAlexander V. Chernikov static void link_table(struct ip_fw_chain *chain, struct table_config *tc); 102b074b7bbSAlexander V. Chernikov static void unlink_table(struct ip_fw_chain *chain, struct table_config *tc); 103b074b7bbSAlexander V. Chernikov static void free_table_state(void **state, void **xstate, uint8_t type); 1042d99a349SAlexander V. Chernikov static int export_tables(struct ip_fw_chain *ch, ipfw_obj_lheader *olh, 1052d99a349SAlexander V. Chernikov struct sockopt_data *sd); 106ac35ff17SAlexander V. Chernikov static void export_table_info(struct ip_fw_chain *ch, struct table_config *tc, 107ac35ff17SAlexander V. Chernikov ipfw_xtable_info *i); 108f1220db8SAlexander V. Chernikov static int dump_table_xentry(void *e, void *arg); 109b074b7bbSAlexander V. Chernikov 1102d99a349SAlexander V. Chernikov static int ipfw_dump_table_v0(struct ip_fw_chain *ch, struct sockopt_data *sd); 1112d99a349SAlexander V. Chernikov static int ipfw_dump_table_v1(struct ip_fw_chain *ch, struct sockopt_data *sd); 112ac35ff17SAlexander V. Chernikov static int ipfw_modify_table_v0(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 113ac35ff17SAlexander V. Chernikov struct sockopt_data *sd); 114ac35ff17SAlexander V. Chernikov static int ipfw_modify_table_v1(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 115ac35ff17SAlexander V. Chernikov struct sockopt_data *sd); 116ac35ff17SAlexander V. Chernikov 117ac35ff17SAlexander V. Chernikov static int destroy_table(struct ip_fw_chain *ch, struct tid_info *ti); 118ac35ff17SAlexander V. Chernikov static int flush_table(struct ip_fw_chain *ch, struct tid_info *ti); 119d3a4f924SAlexander V. Chernikov 1209f7d47b0SAlexander V. Chernikov static struct table_algo *find_table_algo(struct tables_config *tableconf, 1219490a627SAlexander V. Chernikov struct tid_info *ti, char *name); 122b074b7bbSAlexander V. Chernikov 123b074b7bbSAlexander V. Chernikov #define CHAIN_TO_TCFG(chain) ((struct tables_config *)(chain)->tblcfg) 124b074b7bbSAlexander V. Chernikov #define CHAIN_TO_NI(chain) (CHAIN_TO_TCFG(chain)->namehash) 1259f7d47b0SAlexander V. Chernikov #define KIDX_TO_TI(ch, k) (&(((struct table_info *)(ch)->tablestate)[k])) 126b074b7bbSAlexander V. Chernikov 127b074b7bbSAlexander V. Chernikov 1283b3a8eb9SGleb Smirnoff 1293b3a8eb9SGleb Smirnoff int 130b074b7bbSAlexander V. Chernikov ipfw_add_table_entry(struct ip_fw_chain *ch, struct tid_info *ti, 131b074b7bbSAlexander V. Chernikov struct tentry_info *tei) 1323b3a8eb9SGleb Smirnoff { 133b074b7bbSAlexander V. Chernikov struct table_config *tc, *tc_new; 1349f7d47b0SAlexander V. Chernikov struct table_algo *ta; 135b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 136b074b7bbSAlexander V. Chernikov uint16_t kidx; 1379f7d47b0SAlexander V. Chernikov int error; 1389f7d47b0SAlexander V. Chernikov char ta_buf[128]; 1393b3a8eb9SGleb Smirnoff 1409f7d47b0SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 1419f7d47b0SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 1429f7d47b0SAlexander V. Chernikov 1439f7d47b0SAlexander V. Chernikov /* 1449f7d47b0SAlexander V. Chernikov * Find and reference existing table. 1459f7d47b0SAlexander V. Chernikov */ 1469f7d47b0SAlexander V. Chernikov ta = NULL; 1479f7d47b0SAlexander V. Chernikov if ((tc = find_table(ni, ti)) != NULL) { 1489f7d47b0SAlexander V. Chernikov /* check table type */ 1499f7d47b0SAlexander V. Chernikov if (tc->no.type != ti->type) { 1509f7d47b0SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1513b3a8eb9SGleb Smirnoff return (EINVAL); 1523b3a8eb9SGleb Smirnoff } 1533b3a8eb9SGleb Smirnoff 1549f7d47b0SAlexander V. Chernikov /* Reference and unlock */ 1559f7d47b0SAlexander V. Chernikov tc->no.refcnt++; 1569f7d47b0SAlexander V. Chernikov ta = tc->ta; 1579f7d47b0SAlexander V. Chernikov } 1589f7d47b0SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1593b3a8eb9SGleb Smirnoff 1609f7d47b0SAlexander V. Chernikov tc_new = NULL; 161ac35ff17SAlexander V. Chernikov if (tc == NULL) { 1629f7d47b0SAlexander V. Chernikov /* Table not found. We have to create new one */ 1639490a627SAlexander V. Chernikov if ((ta = find_table_algo(CHAIN_TO_TCFG(ch), ti, NULL)) == NULL) 1649f7d47b0SAlexander V. Chernikov return (ENOTSUP); 1653b3a8eb9SGleb Smirnoff 1669490a627SAlexander V. Chernikov tc_new = alloc_table_config(ni, ti, ta, NULL); 1679f7d47b0SAlexander V. Chernikov if (tc_new == NULL) 1689f7d47b0SAlexander V. Chernikov return (ENOMEM); 1699f7d47b0SAlexander V. Chernikov } 1703b3a8eb9SGleb Smirnoff 1719f7d47b0SAlexander V. Chernikov /* Prepare record (allocate memory) */ 1729f7d47b0SAlexander V. Chernikov memset(&ta_buf, 0, sizeof(ta_buf)); 1739f7d47b0SAlexander V. Chernikov error = ta->prepare_add(tei, &ta_buf); 1749f7d47b0SAlexander V. Chernikov if (error != 0) { 1759f7d47b0SAlexander V. Chernikov if (tc_new != NULL) 1769f7d47b0SAlexander V. Chernikov free_table_config(ni, tc_new); 1779f7d47b0SAlexander V. Chernikov return (error); 1783b3a8eb9SGleb Smirnoff } 1793b3a8eb9SGleb Smirnoff 180b074b7bbSAlexander V. Chernikov IPFW_UH_WLOCK(ch); 1813b3a8eb9SGleb Smirnoff 182b074b7bbSAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 1833b3a8eb9SGleb Smirnoff 1849f7d47b0SAlexander V. Chernikov if (tc == NULL) { 185ac35ff17SAlexander V. Chernikov /* Check if another table has been allocated by other thread */ 186b074b7bbSAlexander V. Chernikov if ((tc = find_table(ni, ti)) != NULL) { 1879f7d47b0SAlexander V. Chernikov 1889f7d47b0SAlexander V. Chernikov /* 1899f7d47b0SAlexander V. Chernikov * Check if algoritm is the same since we've 1909f7d47b0SAlexander V. Chernikov * already allocated state using @ta algoritm 1919f7d47b0SAlexander V. Chernikov * callbacks. 1929f7d47b0SAlexander V. Chernikov */ 1939f7d47b0SAlexander V. Chernikov if (tc->ta != ta) { 194b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 195ac35ff17SAlexander V. Chernikov error = EINVAL; 196ac35ff17SAlexander V. Chernikov goto done; 1973b3a8eb9SGleb Smirnoff } 1983b3a8eb9SGleb Smirnoff } else { 199ac35ff17SAlexander V. Chernikov /* Table still does not exists */ 200b074b7bbSAlexander V. Chernikov 201b074b7bbSAlexander V. Chernikov /* Allocate table index. */ 202ac35ff17SAlexander V. Chernikov if (ipfw_objhash_alloc_idx(ni, &kidx) != 0) { 203b074b7bbSAlexander V. Chernikov /* Index full. */ 204b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 205ac35ff17SAlexander V. Chernikov printf("Unable to allocate index for table %s" 206ac35ff17SAlexander V. Chernikov "in set %u. Consider increasing " 207b074b7bbSAlexander V. Chernikov "net.inet.ip.fw.tables_max", 208ac35ff17SAlexander V. Chernikov tc_new->no.name, ti->set); 209ac35ff17SAlexander V. Chernikov error = EBUSY; 210ac35ff17SAlexander V. Chernikov goto done; 2113b3a8eb9SGleb Smirnoff } 212ac35ff17SAlexander V. Chernikov 213ac35ff17SAlexander V. Chernikov /* Set tc_new to zero not to free it afterwards. */ 214ac35ff17SAlexander V. Chernikov tc = tc_new; 215ac35ff17SAlexander V. Chernikov tc_new = NULL; 216b074b7bbSAlexander V. Chernikov /* Save kidx */ 217b074b7bbSAlexander V. Chernikov tc->no.kidx = kidx; 218b074b7bbSAlexander V. Chernikov } 219b074b7bbSAlexander V. Chernikov } else { 2209f7d47b0SAlexander V. Chernikov /* Drop reference we've used in first search */ 2219f7d47b0SAlexander V. Chernikov tc->no.refcnt--; 222b074b7bbSAlexander V. Chernikov } 223b074b7bbSAlexander V. Chernikov 224b074b7bbSAlexander V. Chernikov /* We've got valid table in @tc. Let's add data */ 2259f7d47b0SAlexander V. Chernikov kidx = tc->no.kidx; 2269f7d47b0SAlexander V. Chernikov ta = tc->ta; 2279f7d47b0SAlexander V. Chernikov 228b074b7bbSAlexander V. Chernikov IPFW_WLOCK(ch); 229b074b7bbSAlexander V. Chernikov 230ac35ff17SAlexander V. Chernikov if (tc->linked == 0) 231b074b7bbSAlexander V. Chernikov link_table(ch, tc); 232b074b7bbSAlexander V. Chernikov 2339f7d47b0SAlexander V. Chernikov error = ta->add(tc->astate, KIDX_TO_TI(ch, kidx), tei, &ta_buf); 2343b3a8eb9SGleb Smirnoff 2353b3a8eb9SGleb Smirnoff IPFW_WUNLOCK(ch); 2369f7d47b0SAlexander V. Chernikov 237ac35ff17SAlexander V. Chernikov /* Update number of records. */ 238ac35ff17SAlexander V. Chernikov if (error == 0 && (tei->flags & TEI_FLAGS_UPDATED) == 0) 2399f7d47b0SAlexander V. Chernikov tc->count++; 2409f7d47b0SAlexander V. Chernikov 241b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 242b074b7bbSAlexander V. Chernikov 243ac35ff17SAlexander V. Chernikov done: 244b074b7bbSAlexander V. Chernikov if (tc_new != NULL) 245ac35ff17SAlexander V. Chernikov free_table_config(ni, tc_new); 246ac35ff17SAlexander V. Chernikov /* Run cleaning callback anyway */ 2479f7d47b0SAlexander V. Chernikov ta->flush_entry(tei, &ta_buf); 248b074b7bbSAlexander V. Chernikov 2499f7d47b0SAlexander V. Chernikov return (error); 2503b3a8eb9SGleb Smirnoff } 2513b3a8eb9SGleb Smirnoff 2523b3a8eb9SGleb Smirnoff int 253b074b7bbSAlexander V. Chernikov ipfw_del_table_entry(struct ip_fw_chain *ch, struct tid_info *ti, 254b074b7bbSAlexander V. Chernikov struct tentry_info *tei) 2553b3a8eb9SGleb Smirnoff { 256b074b7bbSAlexander V. Chernikov struct table_config *tc; 2579f7d47b0SAlexander V. Chernikov struct table_algo *ta; 258b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 259b074b7bbSAlexander V. Chernikov uint16_t kidx; 2609f7d47b0SAlexander V. Chernikov int error; 2619f7d47b0SAlexander V. Chernikov char ta_buf[128]; 2623b3a8eb9SGleb Smirnoff 2639f7d47b0SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 264b074b7bbSAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 265b074b7bbSAlexander V. Chernikov if ((tc = find_table(ni, ti)) == NULL) { 2669f7d47b0SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 2673b3a8eb9SGleb Smirnoff return (ESRCH); 2683b3a8eb9SGleb Smirnoff } 2693b3a8eb9SGleb Smirnoff 270b074b7bbSAlexander V. Chernikov if (tc->no.type != ti->type) { 2719f7d47b0SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 2723b3a8eb9SGleb Smirnoff return (EINVAL); 2733b3a8eb9SGleb Smirnoff } 2749f7d47b0SAlexander V. Chernikov 2759f7d47b0SAlexander V. Chernikov ta = tc->ta; 2769f7d47b0SAlexander V. Chernikov 2779f7d47b0SAlexander V. Chernikov memset(&ta_buf, 0, sizeof(ta_buf)); 2789f7d47b0SAlexander V. Chernikov if ((error = ta->prepare_del(tei, &ta_buf)) != 0) { 2799f7d47b0SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 2809f7d47b0SAlexander V. Chernikov return (error); 2819f7d47b0SAlexander V. Chernikov } 2829f7d47b0SAlexander V. Chernikov 283b074b7bbSAlexander V. Chernikov kidx = tc->no.kidx; 284b074b7bbSAlexander V. Chernikov 285b074b7bbSAlexander V. Chernikov IPFW_WLOCK(ch); 2869f7d47b0SAlexander V. Chernikov error = ta->del(tc->astate, KIDX_TO_TI(ch, kidx), tei, &ta_buf); 2873b3a8eb9SGleb Smirnoff IPFW_WUNLOCK(ch); 2883b3a8eb9SGleb Smirnoff 2899f7d47b0SAlexander V. Chernikov if (error == 0) 2909f7d47b0SAlexander V. Chernikov tc->count--; 291b074b7bbSAlexander V. Chernikov 2929f7d47b0SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 2933b3a8eb9SGleb Smirnoff 2949f7d47b0SAlexander V. Chernikov ta->flush_entry(tei, &ta_buf); 295ac35ff17SAlexander V. Chernikov 296ac35ff17SAlexander V. Chernikov return (error); 297ac35ff17SAlexander V. Chernikov } 298ac35ff17SAlexander V. Chernikov 299ac35ff17SAlexander V. Chernikov int 300ac35ff17SAlexander V. Chernikov ipfw_modify_table(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 301ac35ff17SAlexander V. Chernikov struct sockopt_data *sd) 302ac35ff17SAlexander V. Chernikov { 303ac35ff17SAlexander V. Chernikov int error; 304ac35ff17SAlexander V. Chernikov 305ac35ff17SAlexander V. Chernikov switch (op3->version) { 306ac35ff17SAlexander V. Chernikov case 0: 307ac35ff17SAlexander V. Chernikov error = ipfw_modify_table_v0(ch, op3, sd); 308ac35ff17SAlexander V. Chernikov break; 309ac35ff17SAlexander V. Chernikov case 1: 310ac35ff17SAlexander V. Chernikov error = ipfw_modify_table_v1(ch, op3, sd); 311ac35ff17SAlexander V. Chernikov break; 312ac35ff17SAlexander V. Chernikov default: 313ac35ff17SAlexander V. Chernikov error = ENOTSUP; 314ac35ff17SAlexander V. Chernikov } 315ac35ff17SAlexander V. Chernikov 316ac35ff17SAlexander V. Chernikov return (error); 317ac35ff17SAlexander V. Chernikov } 318ac35ff17SAlexander V. Chernikov 319ac35ff17SAlexander V. Chernikov /* 320ac35ff17SAlexander V. Chernikov * Adds or deletes record in table. 321ac35ff17SAlexander V. Chernikov * Data layout (v0): 322ac35ff17SAlexander V. Chernikov * Request: [ ip_fw3_opheader ipfw_table_xentry ] 323ac35ff17SAlexander V. Chernikov * 324ac35ff17SAlexander V. Chernikov * Returns 0 on success 325ac35ff17SAlexander V. Chernikov */ 326ac35ff17SAlexander V. Chernikov static int 327ac35ff17SAlexander V. Chernikov ipfw_modify_table_v0(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 328ac35ff17SAlexander V. Chernikov struct sockopt_data *sd) 329ac35ff17SAlexander V. Chernikov { 330ac35ff17SAlexander V. Chernikov ipfw_table_xentry *xent; 331ac35ff17SAlexander V. Chernikov struct tentry_info tei; 332ac35ff17SAlexander V. Chernikov struct tid_info ti; 333ac35ff17SAlexander V. Chernikov int error, hdrlen, read; 334ac35ff17SAlexander V. Chernikov 335ac35ff17SAlexander V. Chernikov hdrlen = offsetof(ipfw_table_xentry, k); 336ac35ff17SAlexander V. Chernikov 337ac35ff17SAlexander V. Chernikov /* Check minimum header size */ 338ac35ff17SAlexander V. Chernikov if (sd->valsize < (sizeof(*op3) + hdrlen)) 339ac35ff17SAlexander V. Chernikov return (EINVAL); 340ac35ff17SAlexander V. Chernikov 341ac35ff17SAlexander V. Chernikov read = sizeof(ip_fw3_opheader); 342ac35ff17SAlexander V. Chernikov 343ac35ff17SAlexander V. Chernikov /* Check if xentry len field is valid */ 344ac35ff17SAlexander V. Chernikov xent = (ipfw_table_xentry *)(op3 + 1); 345ac35ff17SAlexander V. Chernikov if (xent->len < hdrlen || xent->len + read > sd->valsize) 346ac35ff17SAlexander V. Chernikov return (EINVAL); 347ac35ff17SAlexander V. Chernikov 348ac35ff17SAlexander V. Chernikov memset(&tei, 0, sizeof(tei)); 349ac35ff17SAlexander V. Chernikov tei.paddr = &xent->k; 350ac35ff17SAlexander V. Chernikov tei.masklen = xent->masklen; 351ac35ff17SAlexander V. Chernikov tei.value = xent->value; 352ac35ff17SAlexander V. Chernikov /* Old requests compability */ 353ac35ff17SAlexander V. Chernikov if (xent->type == IPFW_TABLE_CIDR) { 354ac35ff17SAlexander V. Chernikov if (xent->len - hdrlen == sizeof(in_addr_t)) 355ac35ff17SAlexander V. Chernikov tei.subtype = AF_INET; 356ac35ff17SAlexander V. Chernikov else 357ac35ff17SAlexander V. Chernikov tei.subtype = AF_INET6; 358ac35ff17SAlexander V. Chernikov } 359ac35ff17SAlexander V. Chernikov 360ac35ff17SAlexander V. Chernikov memset(&ti, 0, sizeof(ti)); 361ac35ff17SAlexander V. Chernikov ti.uidx = xent->tbl; 362ac35ff17SAlexander V. Chernikov ti.type = xent->type; 363ac35ff17SAlexander V. Chernikov 364ac35ff17SAlexander V. Chernikov error = (op3->opcode == IP_FW_TABLE_XADD) ? 365ac35ff17SAlexander V. Chernikov ipfw_add_table_entry(ch, &ti, &tei) : 366ac35ff17SAlexander V. Chernikov ipfw_del_table_entry(ch, &ti, &tei); 367ac35ff17SAlexander V. Chernikov 368ac35ff17SAlexander V. Chernikov return (error); 369ac35ff17SAlexander V. Chernikov } 370ac35ff17SAlexander V. Chernikov 371ac35ff17SAlexander V. Chernikov /* 372ac35ff17SAlexander V. Chernikov * Adds or deletes record in table. 373ac35ff17SAlexander V. Chernikov * Data layout (v1)(current): 374ac35ff17SAlexander V. Chernikov * Request: [ ipfw_obj_header ipfw_obj_tentry ] 375ac35ff17SAlexander V. Chernikov * 376ac35ff17SAlexander V. Chernikov * Returns 0 on success 377ac35ff17SAlexander V. Chernikov */ 378ac35ff17SAlexander V. Chernikov static int 379ac35ff17SAlexander V. Chernikov ipfw_modify_table_v1(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 380ac35ff17SAlexander V. Chernikov struct sockopt_data *sd) 381ac35ff17SAlexander V. Chernikov { 382ac35ff17SAlexander V. Chernikov ipfw_obj_tentry *tent; 383ac35ff17SAlexander V. Chernikov ipfw_obj_header *oh; 384ac35ff17SAlexander V. Chernikov struct tentry_info tei; 385ac35ff17SAlexander V. Chernikov struct tid_info ti; 386ac35ff17SAlexander V. Chernikov int error, read; 387ac35ff17SAlexander V. Chernikov 388ac35ff17SAlexander V. Chernikov /* Check minimum header size */ 389ac35ff17SAlexander V. Chernikov if (sd->valsize < (sizeof(*oh) + sizeof(*tent))) 390ac35ff17SAlexander V. Chernikov return (EINVAL); 391ac35ff17SAlexander V. Chernikov 392ac35ff17SAlexander V. Chernikov /* Check if passed data is too long */ 393ac35ff17SAlexander V. Chernikov if (sd->valsize != sd->kavail) 394ac35ff17SAlexander V. Chernikov return (EINVAL); 395ac35ff17SAlexander V. Chernikov 396ac35ff17SAlexander V. Chernikov oh = (ipfw_obj_header *)sd->kbuf; 397ac35ff17SAlexander V. Chernikov 398ac35ff17SAlexander V. Chernikov /* Basic length checks for TLVs */ 399ac35ff17SAlexander V. Chernikov if (oh->ntlv.head.length != sizeof(oh->ntlv)) 400ac35ff17SAlexander V. Chernikov return (EINVAL); 401ac35ff17SAlexander V. Chernikov 402ac35ff17SAlexander V. Chernikov read = sizeof(*oh); 403ac35ff17SAlexander V. Chernikov 404ac35ff17SAlexander V. Chernikov /* Assume tentry may grow to support larger keys */ 405ac35ff17SAlexander V. Chernikov tent = (ipfw_obj_tentry *)(oh + 1); 406ac35ff17SAlexander V. Chernikov if (tent->head.length < sizeof(*tent) || 407ac35ff17SAlexander V. Chernikov tent->head.length + read > sd->valsize) 408ac35ff17SAlexander V. Chernikov return (EINVAL); 409ac35ff17SAlexander V. Chernikov 410ac35ff17SAlexander V. Chernikov memset(&tei, 0, sizeof(tei)); 411ac35ff17SAlexander V. Chernikov tei.paddr = &tent->k; 412ac35ff17SAlexander V. Chernikov tei.subtype = tent->subtype; 413ac35ff17SAlexander V. Chernikov tei.masklen = tent->masklen; 414ac35ff17SAlexander V. Chernikov if (tent->flags & IPFW_TF_UPDATE) 415ac35ff17SAlexander V. Chernikov tei.flags |= TEI_FLAGS_UPDATE; 416ac35ff17SAlexander V. Chernikov tei.value = tent->value; 417ac35ff17SAlexander V. Chernikov 418ac35ff17SAlexander V. Chernikov memset(&ti, 0, sizeof(ti)); 419ac35ff17SAlexander V. Chernikov ti.uidx = tent->idx; 420ac35ff17SAlexander V. Chernikov ti.type = oh->ntlv.type; 421ac35ff17SAlexander V. Chernikov ti.tlvs = &oh->ntlv; 422ac35ff17SAlexander V. Chernikov ti.tlen = oh->ntlv.head.length; 423ac35ff17SAlexander V. Chernikov 424ac35ff17SAlexander V. Chernikov error = (oh->opheader.opcode == IP_FW_TABLE_XADD) ? 425ac35ff17SAlexander V. Chernikov ipfw_add_table_entry(ch, &ti, &tei) : 426ac35ff17SAlexander V. Chernikov ipfw_del_table_entry(ch, &ti, &tei); 427ac35ff17SAlexander V. Chernikov 428ac35ff17SAlexander V. Chernikov return (error); 429ac35ff17SAlexander V. Chernikov } 430ac35ff17SAlexander V. Chernikov 431ac35ff17SAlexander V. Chernikov int 432ac35ff17SAlexander V. Chernikov ipfw_flush_table(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 433ac35ff17SAlexander V. Chernikov struct sockopt_data *sd) 434ac35ff17SAlexander V. Chernikov { 435ac35ff17SAlexander V. Chernikov int error; 436ac35ff17SAlexander V. Chernikov struct _ipfw_obj_header *oh; 437ac35ff17SAlexander V. Chernikov struct tid_info ti; 438ac35ff17SAlexander V. Chernikov 439ac35ff17SAlexander V. Chernikov if (sd->valsize != sizeof(*oh)) 440ac35ff17SAlexander V. Chernikov return (EINVAL); 441ac35ff17SAlexander V. Chernikov 442ac35ff17SAlexander V. Chernikov oh = (struct _ipfw_obj_header *)op3; 443ac35ff17SAlexander V. Chernikov objheader_to_ti(oh, &ti); 444ac35ff17SAlexander V. Chernikov 445ac35ff17SAlexander V. Chernikov if (opt == IP_FW_TABLE_XDESTROY) 446ac35ff17SAlexander V. Chernikov error = destroy_table(ch, &ti); 447ac35ff17SAlexander V. Chernikov else if (opt == IP_FW_TABLE_XFLUSH) 448ac35ff17SAlexander V. Chernikov error = flush_table(ch, &ti); 449ac35ff17SAlexander V. Chernikov else 450ac35ff17SAlexander V. Chernikov return (ENOTSUP); 451ac35ff17SAlexander V. Chernikov 452ac35ff17SAlexander V. Chernikov return (error); 4533b3a8eb9SGleb Smirnoff } 4543b3a8eb9SGleb Smirnoff 455b074b7bbSAlexander V. Chernikov /* 4569f7d47b0SAlexander V. Chernikov * Flushes all entries in given table. 457ac35ff17SAlexander V. Chernikov * Data layout (v0)(current): 458ac35ff17SAlexander V. Chernikov * Request: [ ip_fw3_opheader ] 459ac35ff17SAlexander V. Chernikov * 460ac35ff17SAlexander V. Chernikov * Returns 0 on success 461b074b7bbSAlexander V. Chernikov */ 462ac35ff17SAlexander V. Chernikov static int 463ac35ff17SAlexander V. Chernikov flush_table(struct ip_fw_chain *ch, struct tid_info *ti) 4643b3a8eb9SGleb Smirnoff { 465b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 466b074b7bbSAlexander V. Chernikov struct table_config *tc; 4679f7d47b0SAlexander V. Chernikov struct table_algo *ta; 4689f7d47b0SAlexander V. Chernikov struct table_info ti_old, ti_new, *tablestate; 4699f7d47b0SAlexander V. Chernikov void *astate_old, *astate_new; 470b074b7bbSAlexander V. Chernikov int error; 471b074b7bbSAlexander V. Chernikov uint16_t kidx; 4723b3a8eb9SGleb Smirnoff 4733b3a8eb9SGleb Smirnoff /* 4749f7d47b0SAlexander V. Chernikov * Stage 1: save table algoritm. 475b074b7bbSAlexander V. Chernikov * Reference found table to ensure it won't disappear. 4763b3a8eb9SGleb Smirnoff */ 477b074b7bbSAlexander V. Chernikov IPFW_UH_WLOCK(ch); 478b074b7bbSAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 479b074b7bbSAlexander V. Chernikov if ((tc = find_table(ni, ti)) == NULL) { 480b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 481b074b7bbSAlexander V. Chernikov return (ESRCH); 482b074b7bbSAlexander V. Chernikov } 4839f7d47b0SAlexander V. Chernikov ta = tc->ta; 484b074b7bbSAlexander V. Chernikov tc->no.refcnt++; 485b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 4863b3a8eb9SGleb Smirnoff 487b074b7bbSAlexander V. Chernikov /* 4889f7d47b0SAlexander V. Chernikov * Stage 2: allocate new table instance using same algo. 4899490a627SAlexander V. Chernikov * TODO: pass startup parametes somehow. 490b074b7bbSAlexander V. Chernikov */ 4919f7d47b0SAlexander V. Chernikov memset(&ti_new, 0, sizeof(struct table_info)); 4929490a627SAlexander V. Chernikov if ((error = ta->init(&astate_new, &ti_new, NULL)) != 0) { 493b074b7bbSAlexander V. Chernikov IPFW_UH_WLOCK(ch); 494b074b7bbSAlexander V. Chernikov tc->no.refcnt--; 495b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 496b074b7bbSAlexander V. Chernikov return (error); 497b074b7bbSAlexander V. Chernikov } 498b074b7bbSAlexander V. Chernikov 499b074b7bbSAlexander V. Chernikov /* 500b074b7bbSAlexander V. Chernikov * Stage 3: swap old state pointers with newly-allocated ones. 501b074b7bbSAlexander V. Chernikov * Decrease refcount. 502b074b7bbSAlexander V. Chernikov */ 503b074b7bbSAlexander V. Chernikov IPFW_UH_WLOCK(ch); 504b074b7bbSAlexander V. Chernikov 505b074b7bbSAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 506b074b7bbSAlexander V. Chernikov kidx = tc->no.kidx; 5079f7d47b0SAlexander V. Chernikov tablestate = (struct table_info *)ch->tablestate; 508b074b7bbSAlexander V. Chernikov 5099f7d47b0SAlexander V. Chernikov IPFW_WLOCK(ch); 5109f7d47b0SAlexander V. Chernikov ti_old = tablestate[kidx]; 5119f7d47b0SAlexander V. Chernikov tablestate[kidx] = ti_new; 5129f7d47b0SAlexander V. Chernikov IPFW_WUNLOCK(ch); 513b074b7bbSAlexander V. Chernikov 5149f7d47b0SAlexander V. Chernikov astate_old = tc->astate; 5159f7d47b0SAlexander V. Chernikov tc->astate = astate_new; 5169f7d47b0SAlexander V. Chernikov tc->ti = ti_new; 5179f7d47b0SAlexander V. Chernikov tc->count = 0; 518b074b7bbSAlexander V. Chernikov tc->no.refcnt--; 519b074b7bbSAlexander V. Chernikov 520b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 5213b3a8eb9SGleb Smirnoff 522b074b7bbSAlexander V. Chernikov /* 523b074b7bbSAlexander V. Chernikov * Stage 4: perform real flush. 524b074b7bbSAlexander V. Chernikov */ 5259f7d47b0SAlexander V. Chernikov ta->destroy(astate_old, &ti_old); 5263b3a8eb9SGleb Smirnoff 5273b3a8eb9SGleb Smirnoff return (0); 5283b3a8eb9SGleb Smirnoff } 5293b3a8eb9SGleb Smirnoff 530b074b7bbSAlexander V. Chernikov /* 5319f7d47b0SAlexander V. Chernikov * Destroys table specified by @ti. 532ac35ff17SAlexander V. Chernikov * Data layout (v0)(current): 533ac35ff17SAlexander V. Chernikov * Request: [ ip_fw3_opheader ] 534ac35ff17SAlexander V. Chernikov * 535ac35ff17SAlexander V. Chernikov * Returns 0 on success 536b074b7bbSAlexander V. Chernikov */ 537ac35ff17SAlexander V. Chernikov static int 538ac35ff17SAlexander V. Chernikov destroy_table(struct ip_fw_chain *ch, struct tid_info *ti) 539b074b7bbSAlexander V. Chernikov { 540b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 541b074b7bbSAlexander V. Chernikov struct table_config *tc; 542b074b7bbSAlexander V. Chernikov 543b074b7bbSAlexander V. Chernikov IPFW_UH_WLOCK(ch); 544b074b7bbSAlexander V. Chernikov 545b074b7bbSAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 546b074b7bbSAlexander V. Chernikov if ((tc = find_table(ni, ti)) == NULL) { 547b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 548b074b7bbSAlexander V. Chernikov return (ESRCH); 549b074b7bbSAlexander V. Chernikov } 550b074b7bbSAlexander V. Chernikov 5519f7d47b0SAlexander V. Chernikov /* Do not permit destroying referenced tables */ 5529f7d47b0SAlexander V. Chernikov if (tc->no.refcnt > 0) { 553b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 554b074b7bbSAlexander V. Chernikov return (EBUSY); 555b074b7bbSAlexander V. Chernikov } 556b074b7bbSAlexander V. Chernikov 557b074b7bbSAlexander V. Chernikov IPFW_WLOCK(ch); 558b074b7bbSAlexander V. Chernikov unlink_table(ch, tc); 559b074b7bbSAlexander V. Chernikov IPFW_WUNLOCK(ch); 560b074b7bbSAlexander V. Chernikov 561b074b7bbSAlexander V. Chernikov /* Free obj index */ 562ac35ff17SAlexander V. Chernikov if (ipfw_objhash_free_idx(ni, tc->no.kidx) != 0) 563b074b7bbSAlexander V. Chernikov printf("Error unlinking kidx %d from table %s\n", 564b074b7bbSAlexander V. Chernikov tc->no.kidx, tc->tablename); 565b074b7bbSAlexander V. Chernikov 566b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 567b074b7bbSAlexander V. Chernikov 568b074b7bbSAlexander V. Chernikov free_table_config(ni, tc); 569b074b7bbSAlexander V. Chernikov 570b074b7bbSAlexander V. Chernikov return (0); 571b074b7bbSAlexander V. Chernikov } 572b074b7bbSAlexander V. Chernikov 573b074b7bbSAlexander V. Chernikov static void 574b074b7bbSAlexander V. Chernikov destroy_table_locked(struct namedobj_instance *ni, struct named_object *no, 575b074b7bbSAlexander V. Chernikov void *arg) 576b074b7bbSAlexander V. Chernikov { 577b074b7bbSAlexander V. Chernikov 578b074b7bbSAlexander V. Chernikov unlink_table((struct ip_fw_chain *)arg, (struct table_config *)no); 579ac35ff17SAlexander V. Chernikov if (ipfw_objhash_free_idx(ni, no->kidx) != 0) 580b074b7bbSAlexander V. Chernikov printf("Error unlinking kidx %d from table %s\n", 581b074b7bbSAlexander V. Chernikov no->kidx, no->name); 582b074b7bbSAlexander V. Chernikov free_table_config(ni, (struct table_config *)no); 583b074b7bbSAlexander V. Chernikov } 584b074b7bbSAlexander V. Chernikov 5853b3a8eb9SGleb Smirnoff void 5863b3a8eb9SGleb Smirnoff ipfw_destroy_tables(struct ip_fw_chain *ch) 5873b3a8eb9SGleb Smirnoff { 5883b3a8eb9SGleb Smirnoff 589b074b7bbSAlexander V. Chernikov /* Remove all tables from working set */ 590b074b7bbSAlexander V. Chernikov IPFW_UH_WLOCK(ch); 591b074b7bbSAlexander V. Chernikov IPFW_WLOCK(ch); 592b074b7bbSAlexander V. Chernikov ipfw_objhash_foreach(CHAIN_TO_NI(ch), destroy_table_locked, ch); 593b074b7bbSAlexander V. Chernikov IPFW_WUNLOCK(ch); 594b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 5953b3a8eb9SGleb Smirnoff 5963b3a8eb9SGleb Smirnoff /* Free pointers itself */ 5979f7d47b0SAlexander V. Chernikov free(ch->tablestate, M_IPFW); 5989f7d47b0SAlexander V. Chernikov 5999f7d47b0SAlexander V. Chernikov ipfw_table_algo_destroy(ch); 600b074b7bbSAlexander V. Chernikov 601b074b7bbSAlexander V. Chernikov ipfw_objhash_destroy(CHAIN_TO_NI(ch)); 602b074b7bbSAlexander V. Chernikov free(CHAIN_TO_TCFG(ch), M_IPFW); 6033b3a8eb9SGleb Smirnoff } 6043b3a8eb9SGleb Smirnoff 6053b3a8eb9SGleb Smirnoff int 6063b3a8eb9SGleb Smirnoff ipfw_init_tables(struct ip_fw_chain *ch) 6073b3a8eb9SGleb Smirnoff { 608b074b7bbSAlexander V. Chernikov struct tables_config *tcfg; 609b074b7bbSAlexander V. Chernikov 6103b3a8eb9SGleb Smirnoff /* Allocate pointers */ 6119f7d47b0SAlexander V. Chernikov ch->tablestate = malloc(V_fw_tables_max * sizeof(struct table_info), 6129f7d47b0SAlexander V. Chernikov M_IPFW, M_WAITOK | M_ZERO); 613b074b7bbSAlexander V. Chernikov 614b074b7bbSAlexander V. Chernikov tcfg = malloc(sizeof(struct tables_config), M_IPFW, M_WAITOK | M_ZERO); 615b074b7bbSAlexander V. Chernikov tcfg->namehash = ipfw_objhash_create(V_fw_tables_max); 616b074b7bbSAlexander V. Chernikov ch->tblcfg = tcfg; 617b074b7bbSAlexander V. Chernikov 6189f7d47b0SAlexander V. Chernikov ipfw_table_algo_init(ch); 6199f7d47b0SAlexander V. Chernikov 6203b3a8eb9SGleb Smirnoff return (0); 6213b3a8eb9SGleb Smirnoff } 6223b3a8eb9SGleb Smirnoff 6233b3a8eb9SGleb Smirnoff int 6243b3a8eb9SGleb Smirnoff ipfw_resize_tables(struct ip_fw_chain *ch, unsigned int ntables) 6253b3a8eb9SGleb Smirnoff { 6263b3a8eb9SGleb Smirnoff unsigned int ntables_old, tbl; 627b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 6289f7d47b0SAlexander V. Chernikov void *new_idx, *old_tablestate, *tablestate; 629b074b7bbSAlexander V. Chernikov int new_blocks; 6303b3a8eb9SGleb Smirnoff 6313b3a8eb9SGleb Smirnoff /* Check new value for validity */ 6323b3a8eb9SGleb Smirnoff if (ntables > IPFW_TABLES_MAX) 6333b3a8eb9SGleb Smirnoff ntables = IPFW_TABLES_MAX; 6343b3a8eb9SGleb Smirnoff 6353b3a8eb9SGleb Smirnoff /* Allocate new pointers */ 6369f7d47b0SAlexander V. Chernikov tablestate = malloc(ntables * sizeof(struct table_info), 6379f7d47b0SAlexander V. Chernikov M_IPFW, M_WAITOK | M_ZERO); 6389f7d47b0SAlexander V. Chernikov 639b074b7bbSAlexander V. Chernikov ipfw_objhash_bitmap_alloc(ntables, (void *)&new_idx, &new_blocks); 6403b3a8eb9SGleb Smirnoff 6419f7d47b0SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 6423b3a8eb9SGleb Smirnoff 6433b3a8eb9SGleb Smirnoff tbl = (ntables >= V_fw_tables_max) ? V_fw_tables_max : ntables; 644b074b7bbSAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 645b074b7bbSAlexander V. Chernikov 6469f7d47b0SAlexander V. Chernikov /* Temporary restrict decreasing max_tables */ 6479f7d47b0SAlexander V. Chernikov if (ntables < V_fw_tables_max) { 6489f7d47b0SAlexander V. Chernikov 6499f7d47b0SAlexander V. Chernikov /* 6509f7d47b0SAlexander V. Chernikov * FIXME: Check if we really can shrink 6519f7d47b0SAlexander V. Chernikov */ 6529f7d47b0SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 653b074b7bbSAlexander V. Chernikov return (EINVAL); 654b074b7bbSAlexander V. Chernikov } 6553b3a8eb9SGleb Smirnoff 6569f7d47b0SAlexander V. Chernikov /* Copy table info/indices */ 6579f7d47b0SAlexander V. Chernikov memcpy(tablestate, ch->tablestate, sizeof(struct table_info) * tbl); 6589f7d47b0SAlexander V. Chernikov ipfw_objhash_bitmap_merge(ni, &new_idx, &new_blocks); 6593b3a8eb9SGleb Smirnoff 6609f7d47b0SAlexander V. Chernikov IPFW_WLOCK(ch); 6619f7d47b0SAlexander V. Chernikov 6629f7d47b0SAlexander V. Chernikov /* Change pointers */ 6639f7d47b0SAlexander V. Chernikov old_tablestate = ch->tablestate; 6649f7d47b0SAlexander V. Chernikov ch->tablestate = tablestate; 6659f7d47b0SAlexander V. Chernikov ipfw_objhash_bitmap_swap(ni, &new_idx, &new_blocks); 6663b3a8eb9SGleb Smirnoff 6673b3a8eb9SGleb Smirnoff ntables_old = V_fw_tables_max; 6683b3a8eb9SGleb Smirnoff V_fw_tables_max = ntables; 6693b3a8eb9SGleb Smirnoff 6703b3a8eb9SGleb Smirnoff IPFW_WUNLOCK(ch); 6719f7d47b0SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 6723b3a8eb9SGleb Smirnoff 6733b3a8eb9SGleb Smirnoff /* Free old pointers */ 6749f7d47b0SAlexander V. Chernikov free(old_tablestate, M_IPFW); 675b074b7bbSAlexander V. Chernikov ipfw_objhash_bitmap_free(new_idx, new_blocks); 6763b3a8eb9SGleb Smirnoff 6773b3a8eb9SGleb Smirnoff return (0); 6783b3a8eb9SGleb Smirnoff } 6793b3a8eb9SGleb Smirnoff 6803b3a8eb9SGleb Smirnoff int 6813b3a8eb9SGleb Smirnoff ipfw_lookup_table(struct ip_fw_chain *ch, uint16_t tbl, in_addr_t addr, 6823b3a8eb9SGleb Smirnoff uint32_t *val) 6833b3a8eb9SGleb Smirnoff { 6849f7d47b0SAlexander V. Chernikov struct table_info *ti; 6853b3a8eb9SGleb Smirnoff 6869f7d47b0SAlexander V. Chernikov ti = &(((struct table_info *)ch->tablestate)[tbl]); 6879f7d47b0SAlexander V. Chernikov 6889f7d47b0SAlexander V. Chernikov return (ti->lookup(ti, &addr, sizeof(in_addr_t), val)); 6893b3a8eb9SGleb Smirnoff } 6909f7d47b0SAlexander V. Chernikov 6919f7d47b0SAlexander V. Chernikov int 6929f7d47b0SAlexander V. Chernikov ipfw_lookup_table_extended(struct ip_fw_chain *ch, uint16_t tbl, uint16_t plen, 6939f7d47b0SAlexander V. Chernikov void *paddr, uint32_t *val) 6949f7d47b0SAlexander V. Chernikov { 6959f7d47b0SAlexander V. Chernikov struct table_info *ti; 6969f7d47b0SAlexander V. Chernikov 6979f7d47b0SAlexander V. Chernikov ti = &(((struct table_info *)ch->tablestate)[tbl]); 6989f7d47b0SAlexander V. Chernikov 6999f7d47b0SAlexander V. Chernikov return (ti->lookup(ti, paddr, plen, val)); 7009f7d47b0SAlexander V. Chernikov } 7019f7d47b0SAlexander V. Chernikov 7029f7d47b0SAlexander V. Chernikov /* 7039f7d47b0SAlexander V. Chernikov * Info/List/dump support for tables. 7049f7d47b0SAlexander V. Chernikov * 7059f7d47b0SAlexander V. Chernikov */ 7069f7d47b0SAlexander V. Chernikov 707f1220db8SAlexander V. Chernikov /* 708d3a4f924SAlexander V. Chernikov * High-level 'get' cmds sysctl handlers 709d3a4f924SAlexander V. Chernikov */ 710d3a4f924SAlexander V. Chernikov 711d3a4f924SAlexander V. Chernikov /* 712d3a4f924SAlexander V. Chernikov * Get buffer size needed to list info for all tables. 713ac35ff17SAlexander V. Chernikov * Data layout (v0)(current): 714d3a4f924SAlexander V. Chernikov * Request: [ empty ], size = sizeof(ipfw_obj_lheader) 715d3a4f924SAlexander V. Chernikov * Reply: [ ipfw_obj_lheader ] 716d3a4f924SAlexander V. Chernikov * 717d3a4f924SAlexander V. Chernikov * Returns 0 on success 718f1220db8SAlexander V. Chernikov */ 719f1220db8SAlexander V. Chernikov int 7202d99a349SAlexander V. Chernikov ipfw_listsize_tables(struct ip_fw_chain *ch, struct sockopt_data *sd) 721f1220db8SAlexander V. Chernikov { 722f1220db8SAlexander V. Chernikov struct _ipfw_obj_lheader *olh; 723f1220db8SAlexander V. Chernikov 7242d99a349SAlexander V. Chernikov olh = (struct _ipfw_obj_lheader *)ipfw_get_sopt_header(sd,sizeof(*olh)); 7252d99a349SAlexander V. Chernikov if (olh == NULL) 726d3a4f924SAlexander V. Chernikov return (EINVAL); 727d3a4f924SAlexander V. Chernikov 728f1220db8SAlexander V. Chernikov olh->size = sizeof(*olh); /* Make export_table store needed size */ 729f1220db8SAlexander V. Chernikov 730f1220db8SAlexander V. Chernikov IPFW_UH_RLOCK(ch); 7312d99a349SAlexander V. Chernikov export_tables(ch, olh, sd); 732f1220db8SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 733f1220db8SAlexander V. Chernikov 7342d99a349SAlexander V. Chernikov return (0); 735f1220db8SAlexander V. Chernikov } 736f1220db8SAlexander V. Chernikov 737d3a4f924SAlexander V. Chernikov /* 738d3a4f924SAlexander V. Chernikov * Lists all tables currently available in kernel. 739ac35ff17SAlexander V. Chernikov * Data layout (v0)(current): 740d3a4f924SAlexander V. Chernikov * Request: [ ipfw_obj_lheader ], size = ipfw_obj_lheader.size 741d3a4f924SAlexander V. Chernikov * Reply: [ ipfw_obj_lheader ipfw_xtable_info x N ] 742d3a4f924SAlexander V. Chernikov * 743d3a4f924SAlexander V. Chernikov * Returns 0 on success 744d3a4f924SAlexander V. Chernikov */ 745f1220db8SAlexander V. Chernikov int 7462d99a349SAlexander V. Chernikov ipfw_list_tables(struct ip_fw_chain *ch, struct sockopt_data *sd) 747f1220db8SAlexander V. Chernikov { 748f1220db8SAlexander V. Chernikov struct _ipfw_obj_lheader *olh; 749d3a4f924SAlexander V. Chernikov uint32_t sz; 750f1220db8SAlexander V. Chernikov int error; 751f1220db8SAlexander V. Chernikov 7522d99a349SAlexander V. Chernikov olh = (struct _ipfw_obj_lheader *)ipfw_get_sopt_header(sd,sizeof(*olh)); 7532d99a349SAlexander V. Chernikov if (olh == NULL) 754d3a4f924SAlexander V. Chernikov return (EINVAL); 755d3a4f924SAlexander V. Chernikov 756f1220db8SAlexander V. Chernikov IPFW_UH_RLOCK(ch); 757f1220db8SAlexander V. Chernikov sz = ipfw_objhash_count(CHAIN_TO_NI(ch)); 7582d99a349SAlexander V. Chernikov 7592d99a349SAlexander V. Chernikov if (sd->valsize < sz) { 7602d99a349SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 7612d99a349SAlexander V. Chernikov return (ENOMEM); 7622d99a349SAlexander V. Chernikov } 7632d99a349SAlexander V. Chernikov 7642d99a349SAlexander V. Chernikov error = export_tables(ch, olh, sd); 765f1220db8SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 766f1220db8SAlexander V. Chernikov 767f1220db8SAlexander V. Chernikov return (error); 768f1220db8SAlexander V. Chernikov } 769f1220db8SAlexander V. Chernikov 770f1220db8SAlexander V. Chernikov /* 7712d99a349SAlexander V. Chernikov * Store table info to buffer provided by @sd. 772ac35ff17SAlexander V. Chernikov * Data layout (v0)(current): 773d3a4f924SAlexander V. Chernikov * Request: [ ipfw_obj_header ipfw_xtable_info(empty)] 774d3a4f924SAlexander V. Chernikov * Reply: [ ipfw_obj_header ipfw_xtable_info ] 775d3a4f924SAlexander V. Chernikov * 776d3a4f924SAlexander V. Chernikov * Returns 0 on success. 777d3a4f924SAlexander V. Chernikov */ 778d3a4f924SAlexander V. Chernikov int 7792d99a349SAlexander V. Chernikov ipfw_describe_table(struct ip_fw_chain *ch, struct sockopt_data *sd) 780d3a4f924SAlexander V. Chernikov { 781d3a4f924SAlexander V. Chernikov struct _ipfw_obj_header *oh; 782d3a4f924SAlexander V. Chernikov struct table_config *tc; 783d3a4f924SAlexander V. Chernikov struct tid_info ti; 784d3a4f924SAlexander V. Chernikov size_t sz; 785d3a4f924SAlexander V. Chernikov 786d3a4f924SAlexander V. Chernikov sz = sizeof(*oh) + sizeof(ipfw_xtable_info); 7872d99a349SAlexander V. Chernikov oh = (struct _ipfw_obj_header *)ipfw_get_sopt_header(sd, sz); 7882d99a349SAlexander V. Chernikov if (oh == NULL) 789d3a4f924SAlexander V. Chernikov return (EINVAL); 790d3a4f924SAlexander V. Chernikov 791d3a4f924SAlexander V. Chernikov objheader_to_ti(oh, &ti); 792d3a4f924SAlexander V. Chernikov 793d3a4f924SAlexander V. Chernikov IPFW_UH_RLOCK(ch); 794d3a4f924SAlexander V. Chernikov if ((tc = find_table(CHAIN_TO_NI(ch), &ti)) == NULL) { 795d3a4f924SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 796d3a4f924SAlexander V. Chernikov return (ESRCH); 797d3a4f924SAlexander V. Chernikov } 798d3a4f924SAlexander V. Chernikov 799ac35ff17SAlexander V. Chernikov export_table_info(ch, tc, (ipfw_xtable_info *)(oh + 1)); 800d3a4f924SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 801d3a4f924SAlexander V. Chernikov 8022d99a349SAlexander V. Chernikov return (0); 803d3a4f924SAlexander V. Chernikov } 804d3a4f924SAlexander V. Chernikov 805f1220db8SAlexander V. Chernikov struct dump_args { 806f1220db8SAlexander V. Chernikov struct table_info *ti; 807f1220db8SAlexander V. Chernikov struct table_config *tc; 8082d99a349SAlexander V. Chernikov struct sockopt_data *sd; 809f1220db8SAlexander V. Chernikov uint32_t cnt; 810f1220db8SAlexander V. Chernikov uint16_t uidx; 8112d99a349SAlexander V. Chernikov ipfw_table_entry *ent; 8122d99a349SAlexander V. Chernikov uint32_t size; 813f1220db8SAlexander V. Chernikov }; 814f1220db8SAlexander V. Chernikov 815f1220db8SAlexander V. Chernikov int 8162d99a349SAlexander V. Chernikov ipfw_dump_table(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 8172d99a349SAlexander V. Chernikov struct sockopt_data *sd) 818f1220db8SAlexander V. Chernikov { 819d3a4f924SAlexander V. Chernikov int error; 820d3a4f924SAlexander V. Chernikov 821d3a4f924SAlexander V. Chernikov switch (op3->version) { 822d3a4f924SAlexander V. Chernikov case 0: 8232d99a349SAlexander V. Chernikov error = ipfw_dump_table_v0(ch, sd); 824d3a4f924SAlexander V. Chernikov break; 825d3a4f924SAlexander V. Chernikov case 1: 8262d99a349SAlexander V. Chernikov error = ipfw_dump_table_v1(ch, sd); 827d3a4f924SAlexander V. Chernikov break; 828d3a4f924SAlexander V. Chernikov default: 829d3a4f924SAlexander V. Chernikov error = ENOTSUP; 830d3a4f924SAlexander V. Chernikov } 831d3a4f924SAlexander V. Chernikov 832d3a4f924SAlexander V. Chernikov return (error); 833d3a4f924SAlexander V. Chernikov } 834d3a4f924SAlexander V. Chernikov 835d3a4f924SAlexander V. Chernikov /* 836d3a4f924SAlexander V. Chernikov * Dumps all table data 837ac35ff17SAlexander V. Chernikov * Data layout (v1)(current): 8382d99a349SAlexander V. Chernikov * Request: [ ipfw_obj_header ], size = ipfw_xtable_info.size 8392d99a349SAlexander V. Chernikov * Reply: [ ipfw_obj_header ipfw_xtable_info ipfw_table_xentry x N ] 840d3a4f924SAlexander V. Chernikov * 841d3a4f924SAlexander V. Chernikov * Returns 0 on success 842d3a4f924SAlexander V. Chernikov */ 843d3a4f924SAlexander V. Chernikov static int 8442d99a349SAlexander V. Chernikov ipfw_dump_table_v1(struct ip_fw_chain *ch, struct sockopt_data *sd) 845d3a4f924SAlexander V. Chernikov { 846f1220db8SAlexander V. Chernikov struct _ipfw_obj_header *oh; 847f1220db8SAlexander V. Chernikov ipfw_xtable_info *i; 848f1220db8SAlexander V. Chernikov struct tid_info ti; 849f1220db8SAlexander V. Chernikov struct table_config *tc; 850f1220db8SAlexander V. Chernikov struct table_algo *ta; 851f1220db8SAlexander V. Chernikov struct dump_args da; 852d3a4f924SAlexander V. Chernikov uint32_t sz; 853f1220db8SAlexander V. Chernikov 8542d99a349SAlexander V. Chernikov sz = sizeof(ipfw_obj_header) + sizeof(ipfw_xtable_info); 8552d99a349SAlexander V. Chernikov oh = (struct _ipfw_obj_header *)ipfw_get_sopt_header(sd, sz); 8562d99a349SAlexander V. Chernikov if (oh == NULL) 857d3a4f924SAlexander V. Chernikov return (EINVAL); 858d3a4f924SAlexander V. Chernikov 8592d99a349SAlexander V. Chernikov i = (ipfw_xtable_info *)(oh + 1); 860d3a4f924SAlexander V. Chernikov objheader_to_ti(oh, &ti); 861f1220db8SAlexander V. Chernikov 862f1220db8SAlexander V. Chernikov IPFW_UH_RLOCK(ch); 863f1220db8SAlexander V. Chernikov if ((tc = find_table(CHAIN_TO_NI(ch), &ti)) == NULL) { 864f1220db8SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 865f1220db8SAlexander V. Chernikov return (ESRCH); 866f1220db8SAlexander V. Chernikov } 867ac35ff17SAlexander V. Chernikov export_table_info(ch, tc, i); 8682d99a349SAlexander V. Chernikov sz = tc->count; 8692d99a349SAlexander V. Chernikov 8702d99a349SAlexander V. Chernikov if (sd->valsize < sz + tc->count * sizeof(ipfw_table_xentry)) { 8712d99a349SAlexander V. Chernikov 8722d99a349SAlexander V. Chernikov /* 8732d99a349SAlexander V. Chernikov * Submitted buffer size is not enough. 8742d99a349SAlexander V. Chernikov * WE've already filled in @i structure with 8752d99a349SAlexander V. Chernikov * relevant table info including size, so we 8762d99a349SAlexander V. Chernikov * can return. Buffer will be flushed automatically. 8772d99a349SAlexander V. Chernikov */ 878f1220db8SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 8792d99a349SAlexander V. Chernikov return (ENOMEM); 880f1220db8SAlexander V. Chernikov } 881f1220db8SAlexander V. Chernikov 882f1220db8SAlexander V. Chernikov /* 883f1220db8SAlexander V. Chernikov * Do the actual dump in eXtended format 884f1220db8SAlexander V. Chernikov */ 885d3a4f924SAlexander V. Chernikov memset(&da, 0, sizeof(da)); 886f1220db8SAlexander V. Chernikov da.ti = KIDX_TO_TI(ch, tc->no.kidx); 887f1220db8SAlexander V. Chernikov da.tc = tc; 8882d99a349SAlexander V. Chernikov da.sd = sd; 889f1220db8SAlexander V. Chernikov 890f1220db8SAlexander V. Chernikov ta = tc->ta; 891f1220db8SAlexander V. Chernikov 892f1220db8SAlexander V. Chernikov ta->foreach(tc->astate, da.ti, dump_table_xentry, &da); 893f1220db8SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 894f1220db8SAlexander V. Chernikov 895f1220db8SAlexander V. Chernikov return (0); 896f1220db8SAlexander V. Chernikov } 897f1220db8SAlexander V. Chernikov 898d3a4f924SAlexander V. Chernikov /* 899d3a4f924SAlexander V. Chernikov * Dumps all table data 9002d99a349SAlexander V. Chernikov * Data layout (version 0)(legacy): 901d3a4f924SAlexander V. Chernikov * Request: [ ipfw_xtable ], size = IP_FW_TABLE_XGETSIZE() 902d3a4f924SAlexander V. Chernikov * Reply: [ ipfw_xtable ipfw_table_xentry x N ] 903d3a4f924SAlexander V. Chernikov * 904d3a4f924SAlexander V. Chernikov * Returns 0 on success 905d3a4f924SAlexander V. Chernikov */ 906d3a4f924SAlexander V. Chernikov static int 9072d99a349SAlexander V. Chernikov ipfw_dump_table_v0(struct ip_fw_chain *ch, struct sockopt_data *sd) 908d3a4f924SAlexander V. Chernikov { 909d3a4f924SAlexander V. Chernikov ipfw_xtable *xtbl; 910d3a4f924SAlexander V. Chernikov struct tid_info ti; 911d3a4f924SAlexander V. Chernikov struct table_config *tc; 912d3a4f924SAlexander V. Chernikov struct table_algo *ta; 913d3a4f924SAlexander V. Chernikov struct dump_args da; 914d3a4f924SAlexander V. Chernikov size_t sz; 915d3a4f924SAlexander V. Chernikov 9162d99a349SAlexander V. Chernikov xtbl = (ipfw_xtable *)ipfw_get_sopt_header(sd, sizeof(ipfw_xtable)); 9172d99a349SAlexander V. Chernikov if (xtbl == NULL) 918d3a4f924SAlexander V. Chernikov return (EINVAL); 919d3a4f924SAlexander V. Chernikov 920d3a4f924SAlexander V. Chernikov memset(&ti, 0, sizeof(ti)); 921d3a4f924SAlexander V. Chernikov ti.uidx = xtbl->tbl; 922d3a4f924SAlexander V. Chernikov 923d3a4f924SAlexander V. Chernikov IPFW_UH_RLOCK(ch); 924d3a4f924SAlexander V. Chernikov if ((tc = find_table(CHAIN_TO_NI(ch), &ti)) == NULL) { 925d3a4f924SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 926d3a4f924SAlexander V. Chernikov return (0); 927d3a4f924SAlexander V. Chernikov } 928d3a4f924SAlexander V. Chernikov sz = tc->count * sizeof(ipfw_table_xentry) + sizeof(ipfw_xtable); 9292d99a349SAlexander V. Chernikov 9302d99a349SAlexander V. Chernikov xtbl->cnt = tc->count; 9312d99a349SAlexander V. Chernikov xtbl->size = sz; 9322d99a349SAlexander V. Chernikov xtbl->type = tc->no.type; 9332d99a349SAlexander V. Chernikov xtbl->tbl = ti.uidx; 9342d99a349SAlexander V. Chernikov 9352d99a349SAlexander V. Chernikov if (sd->valsize < sz) { 9362d99a349SAlexander V. Chernikov 9372d99a349SAlexander V. Chernikov /* 9382d99a349SAlexander V. Chernikov * Submitted buffer size is not enough. 9392d99a349SAlexander V. Chernikov * WE've already filled in @i structure with 9402d99a349SAlexander V. Chernikov * relevant table info including size, so we 9412d99a349SAlexander V. Chernikov * can return. Buffer will be flushed automatically. 9422d99a349SAlexander V. Chernikov */ 943d3a4f924SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 9442d99a349SAlexander V. Chernikov return (ENOMEM); 945d3a4f924SAlexander V. Chernikov } 946d3a4f924SAlexander V. Chernikov 947d3a4f924SAlexander V. Chernikov /* Do the actual dump in eXtended format */ 948d3a4f924SAlexander V. Chernikov memset(&da, 0, sizeof(da)); 949d3a4f924SAlexander V. Chernikov da.ti = KIDX_TO_TI(ch, tc->no.kidx); 950d3a4f924SAlexander V. Chernikov da.tc = tc; 9512d99a349SAlexander V. Chernikov da.sd = sd; 9522d99a349SAlexander V. Chernikov 953d3a4f924SAlexander V. Chernikov ta = tc->ta; 954d3a4f924SAlexander V. Chernikov 955d3a4f924SAlexander V. Chernikov ta->foreach(tc->astate, da.ti, dump_table_xentry, &da); 956d3a4f924SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 957d3a4f924SAlexander V. Chernikov 9582d99a349SAlexander V. Chernikov return (0); 959d3a4f924SAlexander V. Chernikov } 960d3a4f924SAlexander V. Chernikov 961d3a4f924SAlexander V. Chernikov /* 9629490a627SAlexander V. Chernikov * Creates new table. 963ac35ff17SAlexander V. Chernikov * Data layout (v0)(current): 9649490a627SAlexander V. Chernikov * Request: [ ipfw_obj_header ipfw_xtable_info ] 9659490a627SAlexander V. Chernikov * 9669490a627SAlexander V. Chernikov * Returns 0 on success 9679490a627SAlexander V. Chernikov */ 9689490a627SAlexander V. Chernikov int 969ac35ff17SAlexander V. Chernikov ipfw_create_table(struct ip_fw_chain *ch, ip_fw3_opheader *op3, 970ac35ff17SAlexander V. Chernikov struct sockopt_data *sd) 9719490a627SAlexander V. Chernikov { 9729490a627SAlexander V. Chernikov struct _ipfw_obj_header *oh; 9739490a627SAlexander V. Chernikov ipfw_xtable_info *i; 9749490a627SAlexander V. Chernikov char *tname, *aname; 9759490a627SAlexander V. Chernikov struct tid_info ti; 9769490a627SAlexander V. Chernikov struct namedobj_instance *ni; 9779490a627SAlexander V. Chernikov struct table_config *tc; 9789490a627SAlexander V. Chernikov struct table_algo *ta; 9799490a627SAlexander V. Chernikov uint16_t kidx; 9809490a627SAlexander V. Chernikov 981ac35ff17SAlexander V. Chernikov if (sd->valsize != sizeof(*oh) + sizeof(ipfw_xtable_info)) 9829490a627SAlexander V. Chernikov return (EINVAL); 9839490a627SAlexander V. Chernikov 984ac35ff17SAlexander V. Chernikov oh = (struct _ipfw_obj_header *)sd->kbuf; 9859490a627SAlexander V. Chernikov i = (ipfw_xtable_info *)(oh + 1); 9869490a627SAlexander V. Chernikov 9879490a627SAlexander V. Chernikov /* 9889490a627SAlexander V. Chernikov * Verify user-supplied strings. 9892d99a349SAlexander V. Chernikov * Check for null-terminated/zero-length strings/ 9909490a627SAlexander V. Chernikov */ 991ac35ff17SAlexander V. Chernikov tname = oh->ntlv.name; 9929490a627SAlexander V. Chernikov aname = i->algoname; 993ac35ff17SAlexander V. Chernikov if (ipfw_check_table_name(tname) != 0 || 9949490a627SAlexander V. Chernikov strnlen(aname, sizeof(i->algoname)) == sizeof(i->algoname)) 9959490a627SAlexander V. Chernikov return (EINVAL); 9969490a627SAlexander V. Chernikov 9979490a627SAlexander V. Chernikov if (aname[0] == '\0') { 9989490a627SAlexander V. Chernikov /* Use default algorithm */ 9999490a627SAlexander V. Chernikov aname = NULL; 10009490a627SAlexander V. Chernikov } 10019490a627SAlexander V. Chernikov 10029490a627SAlexander V. Chernikov objheader_to_ti(oh, &ti); 1003ac35ff17SAlexander V. Chernikov /* Create table in set 0 by default */ 1004ac35ff17SAlexander V. Chernikov ti->set = TABLE_SET(ti->set); 1005ac35ff17SAlexander V. Chernikov ti.type = i->type; 10069490a627SAlexander V. Chernikov 10079490a627SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 10089490a627SAlexander V. Chernikov 10099490a627SAlexander V. Chernikov IPFW_UH_RLOCK(ch); 10109490a627SAlexander V. Chernikov if ((tc = find_table(ni, &ti)) != NULL) { 10119490a627SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 10129490a627SAlexander V. Chernikov return (EEXIST); 10139490a627SAlexander V. Chernikov } 10149490a627SAlexander V. Chernikov ta = find_table_algo(CHAIN_TO_TCFG(ch), &ti, aname); 10159490a627SAlexander V. Chernikov IPFW_UH_RUNLOCK(ch); 10169490a627SAlexander V. Chernikov 10179490a627SAlexander V. Chernikov if (ta == NULL) 10189490a627SAlexander V. Chernikov return (ENOTSUP); 10199490a627SAlexander V. Chernikov 10209490a627SAlexander V. Chernikov if ((tc = alloc_table_config(ni, &ti, ta, aname)) == NULL) 10219490a627SAlexander V. Chernikov return (ENOMEM); 1022ac35ff17SAlexander V. Chernikov /* TODO: move inside alloc_table_config() */ 1023ac35ff17SAlexander V. Chernikov tc->vtype = i->vtype; 10249490a627SAlexander V. Chernikov 10259490a627SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 1026ac35ff17SAlexander V. Chernikov if (ipfw_objhash_alloc_idx(ni, &kidx) != 0) { 10279490a627SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 10289490a627SAlexander V. Chernikov printf("Unable to allocate table index for table %s in set %u." 10299490a627SAlexander V. Chernikov " Consider increasing net.inet.ip.fw.tables_max", 10309490a627SAlexander V. Chernikov tname, ti.set); 10319490a627SAlexander V. Chernikov free_table_config(ni, tc); 10329490a627SAlexander V. Chernikov return (EBUSY); 10339490a627SAlexander V. Chernikov } 10349490a627SAlexander V. Chernikov 10359490a627SAlexander V. Chernikov tc->no.kidx = kidx; 10369490a627SAlexander V. Chernikov 10379490a627SAlexander V. Chernikov IPFW_WLOCK(ch); 10389490a627SAlexander V. Chernikov link_table(ch, tc); 10399490a627SAlexander V. Chernikov IPFW_WUNLOCK(ch); 10409490a627SAlexander V. Chernikov 10419490a627SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 10429490a627SAlexander V. Chernikov 10439490a627SAlexander V. Chernikov return (0); 10449490a627SAlexander V. Chernikov } 10459490a627SAlexander V. Chernikov 1046d3a4f924SAlexander V. Chernikov void 1047d3a4f924SAlexander V. Chernikov objheader_to_ti(struct _ipfw_obj_header *oh, struct tid_info *ti) 1048d3a4f924SAlexander V. Chernikov { 1049d3a4f924SAlexander V. Chernikov 1050d3a4f924SAlexander V. Chernikov memset(ti, 0, sizeof(struct tid_info)); 1051d3a4f924SAlexander V. Chernikov ti->set = oh->set; 1052d3a4f924SAlexander V. Chernikov ti->uidx = oh->idx; 1053d3a4f924SAlexander V. Chernikov ti->tlvs = &oh->ntlv; 1054d3a4f924SAlexander V. Chernikov ti->tlen = oh->ntlv.head.length; 1055d3a4f924SAlexander V. Chernikov } 1056d3a4f924SAlexander V. Chernikov 1057563b5ab1SAlexander V. Chernikov int 1058563b5ab1SAlexander V. Chernikov ipfw_export_table_ntlv(struct ip_fw_chain *ch, uint16_t kidx, 1059563b5ab1SAlexander V. Chernikov struct sockopt_data *sd) 1060563b5ab1SAlexander V. Chernikov { 1061563b5ab1SAlexander V. Chernikov struct namedobj_instance *ni; 1062563b5ab1SAlexander V. Chernikov struct named_object *no; 1063563b5ab1SAlexander V. Chernikov ipfw_obj_ntlv *ntlv; 1064563b5ab1SAlexander V. Chernikov 1065563b5ab1SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 1066563b5ab1SAlexander V. Chernikov 1067ac35ff17SAlexander V. Chernikov no = ipfw_objhash_lookup_kidx(ni, kidx); 1068563b5ab1SAlexander V. Chernikov KASSERT(no != NULL, ("invalid table kidx passed")); 1069563b5ab1SAlexander V. Chernikov 1070563b5ab1SAlexander V. Chernikov ntlv = (ipfw_obj_ntlv *)ipfw_get_sopt_space(sd, sizeof(*ntlv)); 1071563b5ab1SAlexander V. Chernikov if (ntlv == NULL) 1072563b5ab1SAlexander V. Chernikov return (ENOMEM); 1073563b5ab1SAlexander V. Chernikov 1074563b5ab1SAlexander V. Chernikov ntlv->head.type = IPFW_TLV_TBL_NAME; 1075563b5ab1SAlexander V. Chernikov ntlv->head.length = sizeof(*ntlv); 1076563b5ab1SAlexander V. Chernikov ntlv->idx = no->kidx; 1077563b5ab1SAlexander V. Chernikov strlcpy(ntlv->name, no->name, sizeof(ntlv->name)); 1078563b5ab1SAlexander V. Chernikov 1079563b5ab1SAlexander V. Chernikov return (0); 1080563b5ab1SAlexander V. Chernikov } 1081563b5ab1SAlexander V. Chernikov 10829f7d47b0SAlexander V. Chernikov static void 1083ac35ff17SAlexander V. Chernikov export_table_info(struct ip_fw_chain *ch, struct table_config *tc, 1084ac35ff17SAlexander V. Chernikov ipfw_xtable_info *i) 10859f7d47b0SAlexander V. Chernikov { 1086ac35ff17SAlexander V. Chernikov struct table_info *ti; 10879f7d47b0SAlexander V. Chernikov 10889f7d47b0SAlexander V. Chernikov i->type = tc->no.type; 1089ac35ff17SAlexander V. Chernikov i->vtype = tc->vtype; 10909f7d47b0SAlexander V. Chernikov i->set = tc->no.set; 10919f7d47b0SAlexander V. Chernikov i->kidx = tc->no.kidx; 10929f7d47b0SAlexander V. Chernikov i->refcnt = tc->no.refcnt; 10939f7d47b0SAlexander V. Chernikov i->count = tc->count; 10949f7d47b0SAlexander V. Chernikov i->size = tc->count * sizeof(ipfw_table_xentry); 1095f1220db8SAlexander V. Chernikov i->size += sizeof(ipfw_obj_header) + sizeof(ipfw_xtable_info); 10969f7d47b0SAlexander V. Chernikov strlcpy(i->tablename, tc->tablename, sizeof(i->tablename)); 1097ac35ff17SAlexander V. Chernikov if (tc->ta->print_config != NULL) { 1098ac35ff17SAlexander V. Chernikov /* Use algo function to print table config to string */ 1099ac35ff17SAlexander V. Chernikov ti = KIDX_TO_TI(ch, tc->no.kidx); 1100ac35ff17SAlexander V. Chernikov tc->ta->print_config(tc->astate, ti, i->algoname, 1101ac35ff17SAlexander V. Chernikov sizeof(i->algoname)); 1102ac35ff17SAlexander V. Chernikov } else 1103ac35ff17SAlexander V. Chernikov strlcpy(i->algoname, tc->ta->name, sizeof(i->algoname)); 11049f7d47b0SAlexander V. Chernikov } 11059f7d47b0SAlexander V. Chernikov 1106ac35ff17SAlexander V. Chernikov struct dump_table_args { 1107ac35ff17SAlexander V. Chernikov struct ip_fw_chain *ch; 1108ac35ff17SAlexander V. Chernikov struct sockopt_data *sd; 1109ac35ff17SAlexander V. Chernikov }; 1110ac35ff17SAlexander V. Chernikov 11119f7d47b0SAlexander V. Chernikov static void 11129f7d47b0SAlexander V. Chernikov export_table_internal(struct namedobj_instance *ni, struct named_object *no, 11139f7d47b0SAlexander V. Chernikov void *arg) 11143b3a8eb9SGleb Smirnoff { 11159f7d47b0SAlexander V. Chernikov ipfw_xtable_info *i; 1116ac35ff17SAlexander V. Chernikov struct dump_table_args *dta; 11173b3a8eb9SGleb Smirnoff 1118ac35ff17SAlexander V. Chernikov dta = (struct dump_table_args *)arg; 1119ac35ff17SAlexander V. Chernikov 1120ac35ff17SAlexander V. Chernikov i = (ipfw_xtable_info *)ipfw_get_sopt_space(dta->sd, sizeof(*i)); 11212d99a349SAlexander V. Chernikov KASSERT(i == 0, ("previously checked buffer is not enough")); 11229f7d47b0SAlexander V. Chernikov 1123ac35ff17SAlexander V. Chernikov export_table_info(dta->ch, (struct table_config *)no, i); 11249f7d47b0SAlexander V. Chernikov } 11259f7d47b0SAlexander V. Chernikov 1126f1220db8SAlexander V. Chernikov /* 1127f1220db8SAlexander V. Chernikov * Export all tables as ipfw_xtable_info structures to 11282d99a349SAlexander V. Chernikov * storage provided by @sd. 1129f1220db8SAlexander V. Chernikov * Returns 0 on success. 1130f1220db8SAlexander V. Chernikov */ 1131f1220db8SAlexander V. Chernikov static int 11322d99a349SAlexander V. Chernikov export_tables(struct ip_fw_chain *ch, ipfw_obj_lheader *olh, 11332d99a349SAlexander V. Chernikov struct sockopt_data *sd) 11349f7d47b0SAlexander V. Chernikov { 11359f7d47b0SAlexander V. Chernikov uint32_t size; 11369f7d47b0SAlexander V. Chernikov uint32_t count; 1137ac35ff17SAlexander V. Chernikov struct dump_table_args dta; 11389f7d47b0SAlexander V. Chernikov 11399f7d47b0SAlexander V. Chernikov count = ipfw_objhash_count(CHAIN_TO_NI(ch)); 11409f7d47b0SAlexander V. Chernikov size = count * sizeof(ipfw_xtable_info) + sizeof(ipfw_obj_lheader); 11412d99a349SAlexander V. Chernikov 11422d99a349SAlexander V. Chernikov /* Fill in header regadless of buffer size */ 1143f1220db8SAlexander V. Chernikov olh->count = count; 1144f1220db8SAlexander V. Chernikov olh->objsize = sizeof(ipfw_xtable_info); 11452d99a349SAlexander V. Chernikov 11462d99a349SAlexander V. Chernikov if (size > olh->size) { 11472d99a349SAlexander V. Chernikov /* Store necessary size */ 11482d99a349SAlexander V. Chernikov olh->size = size; 11499f7d47b0SAlexander V. Chernikov return (ENOMEM); 1150f1220db8SAlexander V. Chernikov } 11519f7d47b0SAlexander V. Chernikov olh->size = size; 11522d99a349SAlexander V. Chernikov 1153ac35ff17SAlexander V. Chernikov dta.ch = ch; 1154ac35ff17SAlexander V. Chernikov dta.sd = sd; 1155ac35ff17SAlexander V. Chernikov 1156ac35ff17SAlexander V. Chernikov ipfw_objhash_foreach(CHAIN_TO_NI(ch), export_table_internal, &dta); 11579f7d47b0SAlexander V. Chernikov 11583b3a8eb9SGleb Smirnoff return (0); 11593b3a8eb9SGleb Smirnoff } 11603b3a8eb9SGleb Smirnoff 11613b3a8eb9SGleb Smirnoff int 1162b074b7bbSAlexander V. Chernikov ipfw_count_table(struct ip_fw_chain *ch, struct tid_info *ti, uint32_t *cnt) 11633b3a8eb9SGleb Smirnoff { 1164b074b7bbSAlexander V. Chernikov struct table_config *tc; 11653b3a8eb9SGleb Smirnoff 1166b074b7bbSAlexander V. Chernikov if ((tc = find_table(CHAIN_TO_NI(ch), ti)) == NULL) 1167b074b7bbSAlexander V. Chernikov return (ESRCH); 11689f7d47b0SAlexander V. Chernikov *cnt = tc->count; 11693b3a8eb9SGleb Smirnoff return (0); 11703b3a8eb9SGleb Smirnoff } 11713b3a8eb9SGleb Smirnoff 11729f7d47b0SAlexander V. Chernikov 11739f7d47b0SAlexander V. Chernikov int 11749f7d47b0SAlexander V. Chernikov ipfw_count_xtable(struct ip_fw_chain *ch, struct tid_info *ti, uint32_t *cnt) 11753b3a8eb9SGleb Smirnoff { 11769f7d47b0SAlexander V. Chernikov struct table_config *tc; 11779f7d47b0SAlexander V. Chernikov 1178d3a4f924SAlexander V. Chernikov if ((tc = find_table(CHAIN_TO_NI(ch), ti)) == NULL) { 1179d3a4f924SAlexander V. Chernikov *cnt = 0; 11809f7d47b0SAlexander V. Chernikov return (0); /* 'table all list' requires success */ 1181d3a4f924SAlexander V. Chernikov } 11829f7d47b0SAlexander V. Chernikov *cnt = tc->count * sizeof(ipfw_table_xentry); 11839f7d47b0SAlexander V. Chernikov if (tc->count > 0) 11849f7d47b0SAlexander V. Chernikov *cnt += sizeof(ipfw_xtable); 11859f7d47b0SAlexander V. Chernikov return (0); 11869f7d47b0SAlexander V. Chernikov } 11879f7d47b0SAlexander V. Chernikov 11889f7d47b0SAlexander V. Chernikov static int 11899f7d47b0SAlexander V. Chernikov dump_table_entry(void *e, void *arg) 11909f7d47b0SAlexander V. Chernikov { 11919f7d47b0SAlexander V. Chernikov struct dump_args *da; 11929f7d47b0SAlexander V. Chernikov struct table_config *tc; 11939f7d47b0SAlexander V. Chernikov struct table_algo *ta; 11943b3a8eb9SGleb Smirnoff ipfw_table_entry *ent; 11953b3a8eb9SGleb Smirnoff 11969f7d47b0SAlexander V. Chernikov da = (struct dump_args *)arg; 11979f7d47b0SAlexander V. Chernikov 11989f7d47b0SAlexander V. Chernikov tc = da->tc; 11999f7d47b0SAlexander V. Chernikov ta = tc->ta; 12009f7d47b0SAlexander V. Chernikov 12019f7d47b0SAlexander V. Chernikov /* Out of memory, returning */ 1202f1220db8SAlexander V. Chernikov if (da->cnt == da->size) 12033b3a8eb9SGleb Smirnoff return (1); 1204f1220db8SAlexander V. Chernikov ent = da->ent++; 1205f1220db8SAlexander V. Chernikov ent->tbl = da->uidx; 1206f1220db8SAlexander V. Chernikov da->cnt++; 12079f7d47b0SAlexander V. Chernikov 12089f7d47b0SAlexander V. Chernikov return (ta->dump_entry(tc->astate, da->ti, e, ent)); 12093b3a8eb9SGleb Smirnoff } 12103b3a8eb9SGleb Smirnoff 1211f1220db8SAlexander V. Chernikov /* 1212f1220db8SAlexander V. Chernikov * Dumps table in pre-8.1 legacy format. 1213f1220db8SAlexander V. Chernikov */ 12143b3a8eb9SGleb Smirnoff int 1215f1220db8SAlexander V. Chernikov ipfw_dump_table_legacy(struct ip_fw_chain *ch, struct tid_info *ti, 1216f1220db8SAlexander V. Chernikov ipfw_table *tbl) 12173b3a8eb9SGleb Smirnoff { 1218b074b7bbSAlexander V. Chernikov struct table_config *tc; 12199f7d47b0SAlexander V. Chernikov struct table_algo *ta; 12209f7d47b0SAlexander V. Chernikov struct dump_args da; 12213b3a8eb9SGleb Smirnoff 12223b3a8eb9SGleb Smirnoff tbl->cnt = 0; 12233b3a8eb9SGleb Smirnoff 1224b074b7bbSAlexander V. Chernikov if ((tc = find_table(CHAIN_TO_NI(ch), ti)) == NULL) 1225b074b7bbSAlexander V. Chernikov return (0); /* XXX: We should return ESRCH */ 12269f7d47b0SAlexander V. Chernikov 12279f7d47b0SAlexander V. Chernikov ta = tc->ta; 12289f7d47b0SAlexander V. Chernikov 12299f7d47b0SAlexander V. Chernikov if (ta->dump_entry == NULL) 12309f7d47b0SAlexander V. Chernikov return (0); /* Legacy dump support is not necessary */ 12319f7d47b0SAlexander V. Chernikov 1232d3a4f924SAlexander V. Chernikov memset(&da, 0, sizeof(da)); 12339f7d47b0SAlexander V. Chernikov da.ti = KIDX_TO_TI(ch, tc->no.kidx); 12349f7d47b0SAlexander V. Chernikov da.tc = tc; 1235f1220db8SAlexander V. Chernikov da.ent = &tbl->ent[0]; 1236f1220db8SAlexander V. Chernikov da.size = tbl->size; 12379f7d47b0SAlexander V. Chernikov 12389f7d47b0SAlexander V. Chernikov tbl->cnt = 0; 12399f7d47b0SAlexander V. Chernikov ta->foreach(tc->astate, da.ti, dump_table_entry, &da); 1240f1220db8SAlexander V. Chernikov tbl->cnt = da.cnt; 12419f7d47b0SAlexander V. Chernikov 12423b3a8eb9SGleb Smirnoff return (0); 12433b3a8eb9SGleb Smirnoff } 12443b3a8eb9SGleb Smirnoff 12459490a627SAlexander V. Chernikov /* 12469490a627SAlexander V. Chernikov * Dumps table entry in eXtended format (current). 12479490a627SAlexander V. Chernikov */ 12483b3a8eb9SGleb Smirnoff static int 12499f7d47b0SAlexander V. Chernikov dump_table_xentry(void *e, void *arg) 12503b3a8eb9SGleb Smirnoff { 12519f7d47b0SAlexander V. Chernikov struct dump_args *da; 12529f7d47b0SAlexander V. Chernikov struct table_config *tc; 12539f7d47b0SAlexander V. Chernikov struct table_algo *ta; 12543b3a8eb9SGleb Smirnoff ipfw_table_xentry *xent; 12553b3a8eb9SGleb Smirnoff 12569f7d47b0SAlexander V. Chernikov da = (struct dump_args *)arg; 12579f7d47b0SAlexander V. Chernikov 12589f7d47b0SAlexander V. Chernikov tc = da->tc; 12599f7d47b0SAlexander V. Chernikov ta = tc->ta; 12609f7d47b0SAlexander V. Chernikov 12612d99a349SAlexander V. Chernikov xent = (ipfw_table_xentry *)ipfw_get_sopt_space(da->sd, sizeof(*xent)); 12623b3a8eb9SGleb Smirnoff /* Out of memory, returning */ 12632d99a349SAlexander V. Chernikov if (xent == NULL) 12643b3a8eb9SGleb Smirnoff return (1); 12653b3a8eb9SGleb Smirnoff xent->len = sizeof(ipfw_table_xentry); 1266f1220db8SAlexander V. Chernikov xent->tbl = da->uidx; 12679f7d47b0SAlexander V. Chernikov 12689f7d47b0SAlexander V. Chernikov return (ta->dump_xentry(tc->astate, da->ti, e, xent)); 12699f7d47b0SAlexander V. Chernikov } 12709f7d47b0SAlexander V. Chernikov 12719f7d47b0SAlexander V. Chernikov /* 12729f7d47b0SAlexander V. Chernikov * Table algorithms 12739f7d47b0SAlexander V. Chernikov */ 12743b3a8eb9SGleb Smirnoff 12759f7d47b0SAlexander V. Chernikov /* 12769490a627SAlexander V. Chernikov * Finds algoritm by index, table type or supplied name 12779f7d47b0SAlexander V. Chernikov */ 12789f7d47b0SAlexander V. Chernikov static struct table_algo * 12799490a627SAlexander V. Chernikov find_table_algo(struct tables_config *tcfg, struct tid_info *ti, char *name) 12809f7d47b0SAlexander V. Chernikov { 12819490a627SAlexander V. Chernikov int i, l; 12829490a627SAlexander V. Chernikov struct table_algo *ta; 12839f7d47b0SAlexander V. Chernikov 12849f7d47b0SAlexander V. Chernikov /* Search by index */ 12859f7d47b0SAlexander V. Chernikov if (ti->atype != 0) { 12869f7d47b0SAlexander V. Chernikov if (ti->atype > tcfg->algo_count) 12879f7d47b0SAlexander V. Chernikov return (NULL); 12889f7d47b0SAlexander V. Chernikov return (tcfg->algo[ti->atype]); 12899f7d47b0SAlexander V. Chernikov } 12909f7d47b0SAlexander V. Chernikov 12919490a627SAlexander V. Chernikov /* Search by name if supplied */ 12929490a627SAlexander V. Chernikov if (name != NULL) { 12939490a627SAlexander V. Chernikov /* TODO: better search */ 12949490a627SAlexander V. Chernikov for (i = 1; i <= tcfg->algo_count; i++) { 12959490a627SAlexander V. Chernikov ta = tcfg->algo[i]; 12969490a627SAlexander V. Chernikov 12979490a627SAlexander V. Chernikov /* 12989490a627SAlexander V. Chernikov * One can supply additional algorithm 12999490a627SAlexander V. Chernikov * parameters so we compare only the first word 13009490a627SAlexander V. Chernikov * of supplied name: 13019490a627SAlexander V. Chernikov * 'hash_cidr hsize=32' 13029490a627SAlexander V. Chernikov * '^^^^^^^^^' 13039490a627SAlexander V. Chernikov * 13049490a627SAlexander V. Chernikov */ 13059490a627SAlexander V. Chernikov l = strlen(ta->name); 13069490a627SAlexander V. Chernikov if (strncmp(name, ta->name, l) == 0) { 13079490a627SAlexander V. Chernikov if (name[l] == '\0' || name[l] == ' ') 13089490a627SAlexander V. Chernikov return (ta); 13099490a627SAlexander V. Chernikov } 13109490a627SAlexander V. Chernikov } 13119490a627SAlexander V. Chernikov 13129490a627SAlexander V. Chernikov return (NULL); 13139490a627SAlexander V. Chernikov } 13149490a627SAlexander V. Chernikov 13159f7d47b0SAlexander V. Chernikov /* Search by type */ 13169f7d47b0SAlexander V. Chernikov switch (ti->type) { 13173b3a8eb9SGleb Smirnoff case IPFW_TABLE_CIDR: 13189f7d47b0SAlexander V. Chernikov return (&radix_cidr); 13193b3a8eb9SGleb Smirnoff case IPFW_TABLE_INTERFACE: 13209f7d47b0SAlexander V. Chernikov return (&radix_iface); 13213b3a8eb9SGleb Smirnoff } 13223b3a8eb9SGleb Smirnoff 13239f7d47b0SAlexander V. Chernikov return (NULL); 13243b3a8eb9SGleb Smirnoff } 13253b3a8eb9SGleb Smirnoff 13269f7d47b0SAlexander V. Chernikov void 13279f7d47b0SAlexander V. Chernikov ipfw_add_table_algo(struct ip_fw_chain *ch, struct table_algo *ta) 13283b3a8eb9SGleb Smirnoff { 13299f7d47b0SAlexander V. Chernikov struct tables_config *tcfg; 13303b3a8eb9SGleb Smirnoff 13319f7d47b0SAlexander V. Chernikov tcfg = CHAIN_TO_TCFG(ch); 1332b074b7bbSAlexander V. Chernikov 13339f7d47b0SAlexander V. Chernikov KASSERT(tcfg->algo_count < 255, ("Increase algo array size")); 13349f7d47b0SAlexander V. Chernikov 13359f7d47b0SAlexander V. Chernikov tcfg->algo[++tcfg->algo_count] = ta; 13369f7d47b0SAlexander V. Chernikov ta->idx = tcfg->algo_count; 13373b3a8eb9SGleb Smirnoff } 13383b3a8eb9SGleb Smirnoff 13399f7d47b0SAlexander V. Chernikov 1340b074b7bbSAlexander V. Chernikov /* 1341b074b7bbSAlexander V. Chernikov * Tables rewriting code 1342b074b7bbSAlexander V. Chernikov * 1343b074b7bbSAlexander V. Chernikov */ 1344b074b7bbSAlexander V. Chernikov 1345b074b7bbSAlexander V. Chernikov /* 1346b074b7bbSAlexander V. Chernikov * Determine table number and lookup type for @cmd. 1347b074b7bbSAlexander V. Chernikov * Fill @tbl and @type with appropriate values. 1348b074b7bbSAlexander V. Chernikov * Returns 0 for relevant opcodes, 1 otherwise. 1349b074b7bbSAlexander V. Chernikov */ 1350b074b7bbSAlexander V. Chernikov static int 1351b074b7bbSAlexander V. Chernikov classify_table_opcode(ipfw_insn *cmd, uint16_t *puidx, uint8_t *ptype) 1352b074b7bbSAlexander V. Chernikov { 1353b074b7bbSAlexander V. Chernikov ipfw_insn_if *cmdif; 1354b074b7bbSAlexander V. Chernikov int skip; 1355b074b7bbSAlexander V. Chernikov uint16_t v; 1356b074b7bbSAlexander V. Chernikov 1357b074b7bbSAlexander V. Chernikov skip = 1; 1358b074b7bbSAlexander V. Chernikov 1359b074b7bbSAlexander V. Chernikov switch (cmd->opcode) { 1360b074b7bbSAlexander V. Chernikov case O_IP_SRC_LOOKUP: 1361b074b7bbSAlexander V. Chernikov case O_IP_DST_LOOKUP: 1362b074b7bbSAlexander V. Chernikov /* Basic IPv4/IPv6 or u32 lookups */ 1363b074b7bbSAlexander V. Chernikov *puidx = cmd->arg1; 1364b074b7bbSAlexander V. Chernikov /* Assume CIDR by default */ 1365b074b7bbSAlexander V. Chernikov *ptype = IPFW_TABLE_CIDR; 1366b074b7bbSAlexander V. Chernikov skip = 0; 1367b074b7bbSAlexander V. Chernikov 1368b074b7bbSAlexander V. Chernikov if (F_LEN(cmd) > F_INSN_SIZE(ipfw_insn_u32)) { 1369b074b7bbSAlexander V. Chernikov /* 1370b074b7bbSAlexander V. Chernikov * generic lookup. The key must be 1371b074b7bbSAlexander V. Chernikov * in 32bit big-endian format. 1372b074b7bbSAlexander V. Chernikov */ 1373b074b7bbSAlexander V. Chernikov v = ((ipfw_insn_u32 *)cmd)->d[1]; 1374b074b7bbSAlexander V. Chernikov switch (v) { 1375b074b7bbSAlexander V. Chernikov case 0: 1376b074b7bbSAlexander V. Chernikov case 1: 1377b074b7bbSAlexander V. Chernikov /* IPv4 src/dst */ 1378b074b7bbSAlexander V. Chernikov break; 1379b074b7bbSAlexander V. Chernikov case 2: 1380b074b7bbSAlexander V. Chernikov case 3: 1381b074b7bbSAlexander V. Chernikov /* src/dst port */ 1382b074b7bbSAlexander V. Chernikov //type = IPFW_TABLE_U16; 1383b074b7bbSAlexander V. Chernikov break; 1384b074b7bbSAlexander V. Chernikov case 4: 1385b074b7bbSAlexander V. Chernikov /* uid/gid */ 1386b074b7bbSAlexander V. Chernikov //type = IPFW_TABLE_U32; 1387b074b7bbSAlexander V. Chernikov case 5: 1388b074b7bbSAlexander V. Chernikov //type = IPFW_TABLE_U32; 1389b074b7bbSAlexander V. Chernikov /* jid */ 1390b074b7bbSAlexander V. Chernikov case 6: 1391b074b7bbSAlexander V. Chernikov //type = IPFW_TABLE_U16; 1392b074b7bbSAlexander V. Chernikov /* dscp */ 1393b074b7bbSAlexander V. Chernikov break; 1394b074b7bbSAlexander V. Chernikov } 1395b074b7bbSAlexander V. Chernikov } 1396b074b7bbSAlexander V. Chernikov break; 1397b074b7bbSAlexander V. Chernikov case O_XMIT: 1398b074b7bbSAlexander V. Chernikov case O_RECV: 1399b074b7bbSAlexander V. Chernikov case O_VIA: 1400b074b7bbSAlexander V. Chernikov /* Interface table, possibly */ 1401b074b7bbSAlexander V. Chernikov cmdif = (ipfw_insn_if *)cmd; 1402b074b7bbSAlexander V. Chernikov if (cmdif->name[0] != '\1') 1403b074b7bbSAlexander V. Chernikov break; 1404b074b7bbSAlexander V. Chernikov 1405b074b7bbSAlexander V. Chernikov *ptype = IPFW_TABLE_INTERFACE; 1406b074b7bbSAlexander V. Chernikov *puidx = cmdif->p.glob; 1407b074b7bbSAlexander V. Chernikov skip = 0; 1408b074b7bbSAlexander V. Chernikov break; 1409b074b7bbSAlexander V. Chernikov } 1410b074b7bbSAlexander V. Chernikov 1411b074b7bbSAlexander V. Chernikov return (skip); 1412b074b7bbSAlexander V. Chernikov } 1413b074b7bbSAlexander V. Chernikov 1414b074b7bbSAlexander V. Chernikov /* 1415b074b7bbSAlexander V. Chernikov * Sets new table value for given opcode. 1416b074b7bbSAlexander V. Chernikov * Assume the same opcodes as classify_table_opcode() 1417b074b7bbSAlexander V. Chernikov */ 1418b074b7bbSAlexander V. Chernikov static void 1419b074b7bbSAlexander V. Chernikov update_table_opcode(ipfw_insn *cmd, uint16_t idx) 1420b074b7bbSAlexander V. Chernikov { 1421b074b7bbSAlexander V. Chernikov ipfw_insn_if *cmdif; 1422b074b7bbSAlexander V. Chernikov 1423b074b7bbSAlexander V. Chernikov switch (cmd->opcode) { 1424b074b7bbSAlexander V. Chernikov case O_IP_SRC_LOOKUP: 1425b074b7bbSAlexander V. Chernikov case O_IP_DST_LOOKUP: 1426b074b7bbSAlexander V. Chernikov /* Basic IPv4/IPv6 or u32 lookups */ 1427b074b7bbSAlexander V. Chernikov cmd->arg1 = idx; 1428b074b7bbSAlexander V. Chernikov break; 1429b074b7bbSAlexander V. Chernikov case O_XMIT: 1430b074b7bbSAlexander V. Chernikov case O_RECV: 1431b074b7bbSAlexander V. Chernikov case O_VIA: 1432b074b7bbSAlexander V. Chernikov /* Interface table, possibly */ 1433b074b7bbSAlexander V. Chernikov cmdif = (ipfw_insn_if *)cmd; 1434b074b7bbSAlexander V. Chernikov cmdif->p.glob = idx; 1435b074b7bbSAlexander V. Chernikov break; 1436b074b7bbSAlexander V. Chernikov } 1437b074b7bbSAlexander V. Chernikov } 1438b074b7bbSAlexander V. Chernikov 1439ac35ff17SAlexander V. Chernikov /* 1440ac35ff17SAlexander V. Chernikov * Checks table name for validity. 1441ac35ff17SAlexander V. Chernikov * Enforce basic length checks, the rest 1442ac35ff17SAlexander V. Chernikov * should be done in userland. 1443ac35ff17SAlexander V. Chernikov * 1444ac35ff17SAlexander V. Chernikov * Returns 0 if name is considered valid. 1445ac35ff17SAlexander V. Chernikov */ 1446ac35ff17SAlexander V. Chernikov int 1447ac35ff17SAlexander V. Chernikov ipfw_check_table_name(char *name) 1448ac35ff17SAlexander V. Chernikov { 1449ac35ff17SAlexander V. Chernikov int nsize; 1450ac35ff17SAlexander V. Chernikov ipfw_obj_ntlv *ntlv = NULL; 1451ac35ff17SAlexander V. Chernikov 1452ac35ff17SAlexander V. Chernikov nsize = sizeof(ntlv->name); 1453ac35ff17SAlexander V. Chernikov 1454ac35ff17SAlexander V. Chernikov if (strnlen(name, nsize) == nsize) 1455ac35ff17SAlexander V. Chernikov return (EINVAL); 1456ac35ff17SAlexander V. Chernikov 1457ac35ff17SAlexander V. Chernikov if (name[0] == '\0') 1458ac35ff17SAlexander V. Chernikov return (EINVAL); 1459ac35ff17SAlexander V. Chernikov 1460ac35ff17SAlexander V. Chernikov /* 1461ac35ff17SAlexander V. Chernikov * TODO: do some more complicated checks 1462ac35ff17SAlexander V. Chernikov */ 1463ac35ff17SAlexander V. Chernikov 1464ac35ff17SAlexander V. Chernikov return (0); 1465ac35ff17SAlexander V. Chernikov } 1466ac35ff17SAlexander V. Chernikov 1467ac35ff17SAlexander V. Chernikov /* 1468ac35ff17SAlexander V. Chernikov * Find tablename TLV by @uid. 1469ac35ff17SAlexander V. Chernikov * Check @tlvs for valid data inside. 1470ac35ff17SAlexander V. Chernikov * 1471ac35ff17SAlexander V. Chernikov * Returns pointer to found TLV or NULL. 1472ac35ff17SAlexander V. Chernikov */ 1473ac35ff17SAlexander V. Chernikov static ipfw_obj_ntlv * 1474b074b7bbSAlexander V. Chernikov find_name_tlv(void *tlvs, int len, uint16_t uidx) 1475b074b7bbSAlexander V. Chernikov { 14769f7d47b0SAlexander V. Chernikov ipfw_obj_ntlv *ntlv; 1477b074b7bbSAlexander V. Chernikov uintptr_t pa, pe; 1478b074b7bbSAlexander V. Chernikov int l; 1479b074b7bbSAlexander V. Chernikov 1480b074b7bbSAlexander V. Chernikov pa = (uintptr_t)tlvs; 1481b074b7bbSAlexander V. Chernikov pe = pa + len; 1482b074b7bbSAlexander V. Chernikov l = 0; 1483b074b7bbSAlexander V. Chernikov for (; pa < pe; pa += l) { 14849f7d47b0SAlexander V. Chernikov ntlv = (ipfw_obj_ntlv *)pa; 1485b074b7bbSAlexander V. Chernikov l = ntlv->head.length; 1486ac35ff17SAlexander V. Chernikov 1487ac35ff17SAlexander V. Chernikov if (l != sizeof(*ntlv)) 1488ac35ff17SAlexander V. Chernikov return (NULL); 1489ac35ff17SAlexander V. Chernikov 1490563b5ab1SAlexander V. Chernikov if (ntlv->head.type != IPFW_TLV_TBL_NAME) 1491b074b7bbSAlexander V. Chernikov continue; 1492ac35ff17SAlexander V. Chernikov 1493b074b7bbSAlexander V. Chernikov if (ntlv->idx != uidx) 1494b074b7bbSAlexander V. Chernikov continue; 1495b074b7bbSAlexander V. Chernikov 1496ac35ff17SAlexander V. Chernikov if (ipfw_check_table_name(ntlv->name) != 0) 1497ac35ff17SAlexander V. Chernikov return (NULL); 1498ac35ff17SAlexander V. Chernikov 1499ac35ff17SAlexander V. Chernikov return (ntlv); 1500b074b7bbSAlexander V. Chernikov } 1501b074b7bbSAlexander V. Chernikov 1502b074b7bbSAlexander V. Chernikov return (NULL); 1503b074b7bbSAlexander V. Chernikov } 1504b074b7bbSAlexander V. Chernikov 1505ac35ff17SAlexander V. Chernikov /* 1506ac35ff17SAlexander V. Chernikov * Finds table config based on either legacy index 1507ac35ff17SAlexander V. Chernikov * or name in ntlv. 1508ac35ff17SAlexander V. Chernikov * Note @ti structure contains unchecked data from userland. 1509ac35ff17SAlexander V. Chernikov * 1510ac35ff17SAlexander V. Chernikov * Returns pointer to table_config or NULL. 1511ac35ff17SAlexander V. Chernikov */ 1512b074b7bbSAlexander V. Chernikov static struct table_config * 1513b074b7bbSAlexander V. Chernikov find_table(struct namedobj_instance *ni, struct tid_info *ti) 1514b074b7bbSAlexander V. Chernikov { 1515b074b7bbSAlexander V. Chernikov char *name, bname[16]; 1516b074b7bbSAlexander V. Chernikov struct named_object *no; 1517ac35ff17SAlexander V. Chernikov ipfw_obj_ntlv *ntlv; 1518ac35ff17SAlexander V. Chernikov uint32_t set; 1519b074b7bbSAlexander V. Chernikov 1520b074b7bbSAlexander V. Chernikov if (ti->tlvs != NULL) { 1521ac35ff17SAlexander V. Chernikov ntlv = find_name_tlv(ti->tlvs, ti->tlen, ti->uidx); 1522ac35ff17SAlexander V. Chernikov if (ntlv == NULL) 1523b074b7bbSAlexander V. Chernikov return (NULL); 1524ac35ff17SAlexander V. Chernikov name = ntlv->name; 1525ac35ff17SAlexander V. Chernikov set = ntlv->set; 1526b074b7bbSAlexander V. Chernikov } else { 1527b074b7bbSAlexander V. Chernikov snprintf(bname, sizeof(bname), "%d", ti->uidx); 1528b074b7bbSAlexander V. Chernikov name = bname; 1529ac35ff17SAlexander V. Chernikov set = 0; 1530b074b7bbSAlexander V. Chernikov } 1531b074b7bbSAlexander V. Chernikov 1532ac35ff17SAlexander V. Chernikov no = ipfw_objhash_lookup_name(ni, set, name); 1533b074b7bbSAlexander V. Chernikov 1534b074b7bbSAlexander V. Chernikov return ((struct table_config *)no); 1535b074b7bbSAlexander V. Chernikov } 1536b074b7bbSAlexander V. Chernikov 1537b074b7bbSAlexander V. Chernikov static struct table_config * 15389f7d47b0SAlexander V. Chernikov alloc_table_config(struct namedobj_instance *ni, struct tid_info *ti, 15399490a627SAlexander V. Chernikov struct table_algo *ta, char *aname) 1540b074b7bbSAlexander V. Chernikov { 1541b074b7bbSAlexander V. Chernikov char *name, bname[16]; 1542b074b7bbSAlexander V. Chernikov struct table_config *tc; 1543b074b7bbSAlexander V. Chernikov int error; 1544ac35ff17SAlexander V. Chernikov ipfw_obj_ntlv *ntlv; 1545ac35ff17SAlexander V. Chernikov uint32_t set; 1546b074b7bbSAlexander V. Chernikov 1547b074b7bbSAlexander V. Chernikov if (ti->tlvs != NULL) { 1548ac35ff17SAlexander V. Chernikov ntlv = find_name_tlv(ti->tlvs, ti->tlen, ti->uidx); 1549ac35ff17SAlexander V. Chernikov if (ntlv == NULL) 1550b074b7bbSAlexander V. Chernikov return (NULL); 1551ac35ff17SAlexander V. Chernikov name = ntlv->name; 1552ac35ff17SAlexander V. Chernikov set = ntlv->set; 1553b074b7bbSAlexander V. Chernikov } else { 1554b074b7bbSAlexander V. Chernikov snprintf(bname, sizeof(bname), "%d", ti->uidx); 1555b074b7bbSAlexander V. Chernikov name = bname; 1556ac35ff17SAlexander V. Chernikov set = 0; 1557b074b7bbSAlexander V. Chernikov } 1558b074b7bbSAlexander V. Chernikov 1559b074b7bbSAlexander V. Chernikov tc = malloc(sizeof(struct table_config), M_IPFW, M_WAITOK | M_ZERO); 1560b074b7bbSAlexander V. Chernikov tc->no.name = tc->tablename; 1561b074b7bbSAlexander V. Chernikov tc->no.type = ti->type; 1562ac35ff17SAlexander V. Chernikov tc->no.set = set; 15639f7d47b0SAlexander V. Chernikov tc->ta = ta; 1564b074b7bbSAlexander V. Chernikov strlcpy(tc->tablename, name, sizeof(tc->tablename)); 1565ac35ff17SAlexander V. Chernikov /* Set default value type to u32 for compability reasons */ 1566ac35ff17SAlexander V. Chernikov tc->vtype = IPFW_VTYPE_U32; 1567b074b7bbSAlexander V. Chernikov 1568b074b7bbSAlexander V. Chernikov if (ti->tlvs == NULL) { 1569b074b7bbSAlexander V. Chernikov tc->no.compat = 1; 1570b074b7bbSAlexander V. Chernikov tc->no.uidx = ti->uidx; 1571b074b7bbSAlexander V. Chernikov } 1572b074b7bbSAlexander V. Chernikov 1573b074b7bbSAlexander V. Chernikov /* Preallocate data structures for new tables */ 15749490a627SAlexander V. Chernikov error = ta->init(&tc->astate, &tc->ti, aname); 1575b074b7bbSAlexander V. Chernikov if (error != 0) { 1576b074b7bbSAlexander V. Chernikov free(tc, M_IPFW); 1577b074b7bbSAlexander V. Chernikov return (NULL); 1578b074b7bbSAlexander V. Chernikov } 1579b074b7bbSAlexander V. Chernikov 1580b074b7bbSAlexander V. Chernikov return (tc); 1581b074b7bbSAlexander V. Chernikov } 1582b074b7bbSAlexander V. Chernikov 1583b074b7bbSAlexander V. Chernikov static void 1584b074b7bbSAlexander V. Chernikov free_table_config(struct namedobj_instance *ni, struct table_config *tc) 1585b074b7bbSAlexander V. Chernikov { 1586b074b7bbSAlexander V. Chernikov 1587b074b7bbSAlexander V. Chernikov if (tc->linked == 0) 15889f7d47b0SAlexander V. Chernikov tc->ta->destroy(&tc->astate, &tc->ti); 1589b074b7bbSAlexander V. Chernikov 1590b074b7bbSAlexander V. Chernikov free(tc, M_IPFW); 1591b074b7bbSAlexander V. Chernikov } 1592b074b7bbSAlexander V. Chernikov 1593b074b7bbSAlexander V. Chernikov /* 1594b074b7bbSAlexander V. Chernikov * Links @tc to @chain table named instance. 1595b074b7bbSAlexander V. Chernikov * Sets appropriate type/states in @chain table info. 1596b074b7bbSAlexander V. Chernikov */ 1597b074b7bbSAlexander V. Chernikov static void 15989f7d47b0SAlexander V. Chernikov link_table(struct ip_fw_chain *ch, struct table_config *tc) 1599b074b7bbSAlexander V. Chernikov { 1600b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 16019f7d47b0SAlexander V. Chernikov struct table_info *ti; 1602b074b7bbSAlexander V. Chernikov uint16_t kidx; 1603b074b7bbSAlexander V. Chernikov 16049f7d47b0SAlexander V. Chernikov IPFW_UH_WLOCK_ASSERT(ch); 16059f7d47b0SAlexander V. Chernikov IPFW_WLOCK_ASSERT(ch); 1606b074b7bbSAlexander V. Chernikov 16079f7d47b0SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 1608b074b7bbSAlexander V. Chernikov kidx = tc->no.kidx; 1609b074b7bbSAlexander V. Chernikov 1610b074b7bbSAlexander V. Chernikov ipfw_objhash_add(ni, &tc->no); 16119f7d47b0SAlexander V. Chernikov 16129f7d47b0SAlexander V. Chernikov ti = KIDX_TO_TI(ch, kidx); 16139f7d47b0SAlexander V. Chernikov *ti = tc->ti; 1614b074b7bbSAlexander V. Chernikov 1615b074b7bbSAlexander V. Chernikov tc->linked = 1; 1616b074b7bbSAlexander V. Chernikov } 1617b074b7bbSAlexander V. Chernikov 1618b074b7bbSAlexander V. Chernikov /* 1619b074b7bbSAlexander V. Chernikov * Unlinks @tc from @chain table named instance. 1620b074b7bbSAlexander V. Chernikov * Zeroes states in @chain and stores them in @tc. 1621b074b7bbSAlexander V. Chernikov */ 1622b074b7bbSAlexander V. Chernikov static void 16239f7d47b0SAlexander V. Chernikov unlink_table(struct ip_fw_chain *ch, struct table_config *tc) 1624b074b7bbSAlexander V. Chernikov { 1625b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 16269f7d47b0SAlexander V. Chernikov struct table_info *ti; 1627b074b7bbSAlexander V. Chernikov uint16_t kidx; 1628b074b7bbSAlexander V. Chernikov 16299f7d47b0SAlexander V. Chernikov IPFW_UH_WLOCK_ASSERT(ch); 16309f7d47b0SAlexander V. Chernikov IPFW_WLOCK_ASSERT(ch); 1631b074b7bbSAlexander V. Chernikov 16329f7d47b0SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 1633b074b7bbSAlexander V. Chernikov kidx = tc->no.kidx; 1634b074b7bbSAlexander V. Chernikov 16359f7d47b0SAlexander V. Chernikov /* Clear state. @ti copy is already saved inside @tc */ 1636b074b7bbSAlexander V. Chernikov ipfw_objhash_del(ni, &tc->no); 16379f7d47b0SAlexander V. Chernikov ti = KIDX_TO_TI(ch, kidx); 16389f7d47b0SAlexander V. Chernikov memset(ti, 0, sizeof(struct table_info)); 1639b074b7bbSAlexander V. Chernikov tc->linked = 0; 1640b074b7bbSAlexander V. Chernikov } 1641b074b7bbSAlexander V. Chernikov 1642b074b7bbSAlexander V. Chernikov /* 1643b074b7bbSAlexander V. Chernikov * Finds named object by @uidx number. 1644b074b7bbSAlexander V. Chernikov * Refs found object, allocate new index for non-existing object. 16459490a627SAlexander V. Chernikov * Fills in @oib with userland/kernel indexes. 16469490a627SAlexander V. Chernikov * First free oidx pointer is saved back in @oib. 1647b074b7bbSAlexander V. Chernikov * 1648b074b7bbSAlexander V. Chernikov * Returns 0 on success. 1649b074b7bbSAlexander V. Chernikov */ 1650b074b7bbSAlexander V. Chernikov static int 16519490a627SAlexander V. Chernikov bind_table_rule(struct ip_fw_chain *ch, struct ip_fw *rule, 16529490a627SAlexander V. Chernikov struct rule_check_info *ci, struct obj_idx **oib, struct tid_info *ti) 1653b074b7bbSAlexander V. Chernikov { 1654b074b7bbSAlexander V. Chernikov struct table_config *tc; 16559490a627SAlexander V. Chernikov struct namedobj_instance *ni; 16569490a627SAlexander V. Chernikov struct named_object *no; 16579490a627SAlexander V. Chernikov int error, l, cmdlen; 16589490a627SAlexander V. Chernikov ipfw_insn *cmd; 16599490a627SAlexander V. Chernikov struct obj_idx *pidx, *p; 16609490a627SAlexander V. Chernikov 16619490a627SAlexander V. Chernikov pidx = *oib; 16629490a627SAlexander V. Chernikov l = rule->cmd_len; 16639490a627SAlexander V. Chernikov cmd = rule->cmd; 16649490a627SAlexander V. Chernikov cmdlen = 0; 16659490a627SAlexander V. Chernikov error = 0; 16669490a627SAlexander V. Chernikov 16679490a627SAlexander V. Chernikov IPFW_UH_WLOCK(ch); 16689490a627SAlexander V. Chernikov ni = CHAIN_TO_NI(ch); 16699490a627SAlexander V. Chernikov 16709490a627SAlexander V. Chernikov for ( ; l > 0 ; l -= cmdlen, cmd += cmdlen) { 16719490a627SAlexander V. Chernikov cmdlen = F_LEN(cmd); 16729490a627SAlexander V. Chernikov 16739490a627SAlexander V. Chernikov if (classify_table_opcode(cmd, &ti->uidx, &ti->type) != 0) 16749490a627SAlexander V. Chernikov continue; 1675b074b7bbSAlexander V. Chernikov 1676b074b7bbSAlexander V. Chernikov pidx->uidx = ti->uidx; 1677b074b7bbSAlexander V. Chernikov pidx->type = ti->type; 1678b074b7bbSAlexander V. Chernikov 16799490a627SAlexander V. Chernikov if ((tc = find_table(ni, ti)) != NULL) { 16809490a627SAlexander V. Chernikov if (tc->no.type != ti->type) { 16819490a627SAlexander V. Chernikov /* Incompatible types */ 16829490a627SAlexander V. Chernikov error = EINVAL; 16839490a627SAlexander V. Chernikov break; 16849490a627SAlexander V. Chernikov } 16859f7d47b0SAlexander V. Chernikov 16869490a627SAlexander V. Chernikov /* Reference found table and save kidx */ 16879490a627SAlexander V. Chernikov tc->no.refcnt++; 16889490a627SAlexander V. Chernikov pidx->kidx = tc->no.kidx; 16899490a627SAlexander V. Chernikov pidx++; 16909490a627SAlexander V. Chernikov continue; 16919490a627SAlexander V. Chernikov } 16929490a627SAlexander V. Chernikov 16939490a627SAlexander V. Chernikov /* Table not found. Allocate new index and save for later */ 1694ac35ff17SAlexander V. Chernikov if (ipfw_objhash_alloc_idx(ni, &pidx->kidx) != 0) { 1695ac35ff17SAlexander V. Chernikov printf("Unable to allocate table %s index in set %u." 1696b074b7bbSAlexander V. Chernikov " Consider increasing net.inet.ip.fw.tables_max", 1697ac35ff17SAlexander V. Chernikov "", ti->set); 16989490a627SAlexander V. Chernikov error = EBUSY; 16999490a627SAlexander V. Chernikov break; 1700b074b7bbSAlexander V. Chernikov } 1701b074b7bbSAlexander V. Chernikov 1702b074b7bbSAlexander V. Chernikov ci->new_tables++; 17039490a627SAlexander V. Chernikov pidx->new = 1; 17049490a627SAlexander V. Chernikov pidx++; 1705b074b7bbSAlexander V. Chernikov } 1706b074b7bbSAlexander V. Chernikov 17079490a627SAlexander V. Chernikov if (error != 0) { 17089490a627SAlexander V. Chernikov /* Unref everything we have already done */ 17099490a627SAlexander V. Chernikov for (p = *oib; p < pidx; p++) { 17109490a627SAlexander V. Chernikov if (p->new != 0) { 1711ac35ff17SAlexander V. Chernikov ipfw_objhash_free_idx(ni, p->kidx); 17129490a627SAlexander V. Chernikov continue; 17139490a627SAlexander V. Chernikov } 1714b074b7bbSAlexander V. Chernikov 17159490a627SAlexander V. Chernikov /* Find & unref by existing idx */ 1716ac35ff17SAlexander V. Chernikov no = ipfw_objhash_lookup_kidx(ni, p->kidx); 17179490a627SAlexander V. Chernikov KASSERT(no != NULL, ("Ref'd table %d disappeared", 17189490a627SAlexander V. Chernikov p->kidx)); 1719b074b7bbSAlexander V. Chernikov 17209490a627SAlexander V. Chernikov no->refcnt--; 17219490a627SAlexander V. Chernikov } 17229490a627SAlexander V. Chernikov } 17239490a627SAlexander V. Chernikov IPFW_UH_WUNLOCK(ch); 1724b074b7bbSAlexander V. Chernikov 17259490a627SAlexander V. Chernikov *oib = pidx; 17269490a627SAlexander V. Chernikov 17279490a627SAlexander V. Chernikov return (error); 1728b074b7bbSAlexander V. Chernikov } 1729b074b7bbSAlexander V. Chernikov 1730b074b7bbSAlexander V. Chernikov /* 1731b074b7bbSAlexander V. Chernikov * Compatibility function for old ipfw(8) binaries. 1732b074b7bbSAlexander V. Chernikov * Rewrites table kernel indices with userland ones. 1733b074b7bbSAlexander V. Chernikov * Works for \d+ talbes only (e.g. for tables, converted 1734b074b7bbSAlexander V. Chernikov * from old numbered system calls). 1735b074b7bbSAlexander V. Chernikov * 1736b074b7bbSAlexander V. Chernikov * Returns 0 on success. 1737b074b7bbSAlexander V. Chernikov * Raises error on any other tables. 1738b074b7bbSAlexander V. Chernikov */ 1739b074b7bbSAlexander V. Chernikov int 1740b074b7bbSAlexander V. Chernikov ipfw_rewrite_table_kidx(struct ip_fw_chain *chain, struct ip_fw *rule) 1741b074b7bbSAlexander V. Chernikov { 1742b074b7bbSAlexander V. Chernikov int cmdlen, l; 1743b074b7bbSAlexander V. Chernikov ipfw_insn *cmd; 1744b074b7bbSAlexander V. Chernikov uint32_t set; 1745b074b7bbSAlexander V. Chernikov uint16_t kidx; 1746b074b7bbSAlexander V. Chernikov uint8_t type; 1747b074b7bbSAlexander V. Chernikov struct named_object *no; 1748b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 1749b074b7bbSAlexander V. Chernikov 1750b074b7bbSAlexander V. Chernikov ni = CHAIN_TO_NI(chain); 1751b074b7bbSAlexander V. Chernikov 1752b074b7bbSAlexander V. Chernikov set = TABLE_SET(rule->set); 1753b074b7bbSAlexander V. Chernikov 1754b074b7bbSAlexander V. Chernikov l = rule->cmd_len; 1755b074b7bbSAlexander V. Chernikov cmd = rule->cmd; 1756b074b7bbSAlexander V. Chernikov cmdlen = 0; 1757b074b7bbSAlexander V. Chernikov for ( ; l > 0 ; l -= cmdlen, cmd += cmdlen) { 1758b074b7bbSAlexander V. Chernikov cmdlen = F_LEN(cmd); 1759b074b7bbSAlexander V. Chernikov 1760b074b7bbSAlexander V. Chernikov if (classify_table_opcode(cmd, &kidx, &type) != 0) 1761b074b7bbSAlexander V. Chernikov continue; 1762b074b7bbSAlexander V. Chernikov 1763ac35ff17SAlexander V. Chernikov if ((no = ipfw_objhash_lookup_kidx(ni, kidx)) == NULL) 1764b074b7bbSAlexander V. Chernikov return (1); 1765b074b7bbSAlexander V. Chernikov 1766b074b7bbSAlexander V. Chernikov if (no->compat == 0) 1767b074b7bbSAlexander V. Chernikov return (2); 1768b074b7bbSAlexander V. Chernikov 1769b074b7bbSAlexander V. Chernikov update_table_opcode(cmd, no->uidx); 1770b074b7bbSAlexander V. Chernikov } 1771b074b7bbSAlexander V. Chernikov 1772b074b7bbSAlexander V. Chernikov return (0); 1773b074b7bbSAlexander V. Chernikov } 1774b074b7bbSAlexander V. Chernikov 1775563b5ab1SAlexander V. Chernikov /* 1776563b5ab1SAlexander V. Chernikov * Sets every table kidx in @bmask which is used in rule @rule. 1777563b5ab1SAlexander V. Chernikov * 1778563b5ab1SAlexander V. Chernikov * Returns number of newly-referenced tables. 1779563b5ab1SAlexander V. Chernikov */ 1780563b5ab1SAlexander V. Chernikov int 1781563b5ab1SAlexander V. Chernikov ipfw_mark_table_kidx(struct ip_fw_chain *chain, struct ip_fw *rule, 1782563b5ab1SAlexander V. Chernikov uint32_t *bmask) 1783563b5ab1SAlexander V. Chernikov { 1784563b5ab1SAlexander V. Chernikov int cmdlen, l, count; 1785563b5ab1SAlexander V. Chernikov ipfw_insn *cmd; 1786563b5ab1SAlexander V. Chernikov uint16_t kidx; 1787563b5ab1SAlexander V. Chernikov uint8_t type; 1788563b5ab1SAlexander V. Chernikov 1789563b5ab1SAlexander V. Chernikov l = rule->cmd_len; 1790563b5ab1SAlexander V. Chernikov cmd = rule->cmd; 1791563b5ab1SAlexander V. Chernikov cmdlen = 0; 1792563b5ab1SAlexander V. Chernikov count = 0; 1793563b5ab1SAlexander V. Chernikov for ( ; l > 0 ; l -= cmdlen, cmd += cmdlen) { 1794563b5ab1SAlexander V. Chernikov cmdlen = F_LEN(cmd); 1795563b5ab1SAlexander V. Chernikov 1796563b5ab1SAlexander V. Chernikov if (classify_table_opcode(cmd, &kidx, &type) != 0) 1797563b5ab1SAlexander V. Chernikov continue; 1798563b5ab1SAlexander V. Chernikov 1799563b5ab1SAlexander V. Chernikov if ((bmask[kidx / 32] & (1 << (kidx % 32))) == 0) 1800563b5ab1SAlexander V. Chernikov count++; 1801563b5ab1SAlexander V. Chernikov 1802563b5ab1SAlexander V. Chernikov bmask[kidx / 32] |= 1 << (kidx % 32); 1803563b5ab1SAlexander V. Chernikov } 1804563b5ab1SAlexander V. Chernikov 1805563b5ab1SAlexander V. Chernikov return (count); 1806563b5ab1SAlexander V. Chernikov } 1807563b5ab1SAlexander V. Chernikov 1808563b5ab1SAlexander V. Chernikov 1809b074b7bbSAlexander V. Chernikov 1810b074b7bbSAlexander V. Chernikov /* 1811b074b7bbSAlexander V. Chernikov * Checks is opcode is referencing table of appropriate type. 1812b074b7bbSAlexander V. Chernikov * Adds reference count for found table if true. 1813b074b7bbSAlexander V. Chernikov * Rewrites user-supplied opcode values with kernel ones. 1814b074b7bbSAlexander V. Chernikov * 1815b074b7bbSAlexander V. Chernikov * Returns 0 on success and appropriate error code otherwise. 1816b074b7bbSAlexander V. Chernikov */ 1817b074b7bbSAlexander V. Chernikov int 1818b074b7bbSAlexander V. Chernikov ipfw_rewrite_table_uidx(struct ip_fw_chain *chain, 1819b074b7bbSAlexander V. Chernikov struct rule_check_info *ci) 1820b074b7bbSAlexander V. Chernikov { 1821b074b7bbSAlexander V. Chernikov int cmdlen, error, ftype, l; 1822b074b7bbSAlexander V. Chernikov ipfw_insn *cmd; 1823b074b7bbSAlexander V. Chernikov uint16_t uidx; 1824b074b7bbSAlexander V. Chernikov uint8_t type; 1825b074b7bbSAlexander V. Chernikov struct table_config *tc; 18269f7d47b0SAlexander V. Chernikov struct table_algo *ta; 1827b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 1828b074b7bbSAlexander V. Chernikov struct named_object *no, *no_n, *no_tmp; 18299490a627SAlexander V. Chernikov struct obj_idx *p, *pidx_first, *pidx_last; 1830b074b7bbSAlexander V. Chernikov struct namedobjects_head nh; 1831b074b7bbSAlexander V. Chernikov struct tid_info ti; 1832b074b7bbSAlexander V. Chernikov 1833b074b7bbSAlexander V. Chernikov ni = CHAIN_TO_NI(chain); 1834b074b7bbSAlexander V. Chernikov 18359490a627SAlexander V. Chernikov /* Prepare queue to store configs */ 18369490a627SAlexander V. Chernikov TAILQ_INIT(&nh); 18379490a627SAlexander V. Chernikov 1838b074b7bbSAlexander V. Chernikov /* 1839b074b7bbSAlexander V. Chernikov * Prepare an array for storing opcode indices. 1840b074b7bbSAlexander V. Chernikov * Use stack allocation by default. 1841b074b7bbSAlexander V. Chernikov */ 1842b074b7bbSAlexander V. Chernikov if (ci->table_opcodes <= (sizeof(ci->obuf)/sizeof(ci->obuf[0]))) { 1843b074b7bbSAlexander V. Chernikov /* Stack */ 18449490a627SAlexander V. Chernikov pidx_first = ci->obuf; 1845b074b7bbSAlexander V. Chernikov } else 18469490a627SAlexander V. Chernikov pidx_first = malloc(ci->table_opcodes * sizeof(struct obj_idx), 1847b074b7bbSAlexander V. Chernikov M_IPFW, M_WAITOK | M_ZERO); 1848b074b7bbSAlexander V. Chernikov 18499490a627SAlexander V. Chernikov pidx_last = pidx_first; 1850b074b7bbSAlexander V. Chernikov error = 0; 1851b074b7bbSAlexander V. Chernikov 1852b074b7bbSAlexander V. Chernikov type = 0; 1853b074b7bbSAlexander V. Chernikov ftype = 0; 1854b074b7bbSAlexander V. Chernikov 1855b074b7bbSAlexander V. Chernikov memset(&ti, 0, sizeof(ti)); 1856ac35ff17SAlexander V. Chernikov ti.set = TABLE_SET(ci->krule->set); 18576c2997ffSAlexander V. Chernikov if (ci->ctlv != NULL) { 18586c2997ffSAlexander V. Chernikov ti.tlvs = (void *)(ci->ctlv + 1); 18596c2997ffSAlexander V. Chernikov ti.tlen = ci->ctlv->head.length - sizeof(ipfw_obj_ctlv); 18606c2997ffSAlexander V. Chernikov } 1861b074b7bbSAlexander V. Chernikov 1862b074b7bbSAlexander V. Chernikov /* 18639490a627SAlexander V. Chernikov * Stage 1: reference existing tables, determine number 18649490a627SAlexander V. Chernikov * of tables we need to allocate and allocate indexes for each. 1865b074b7bbSAlexander V. Chernikov */ 18669490a627SAlexander V. Chernikov error = bind_table_rule(chain, ci->krule, ci, &pidx_last, &ti); 1867b074b7bbSAlexander V. Chernikov 1868b074b7bbSAlexander V. Chernikov if (error != 0) { 18699490a627SAlexander V. Chernikov if (pidx_first != ci->obuf) 18709490a627SAlexander V. Chernikov free(pidx_first, M_IPFW); 1871b074b7bbSAlexander V. Chernikov 1872b074b7bbSAlexander V. Chernikov return (error); 1873b074b7bbSAlexander V. Chernikov } 1874b074b7bbSAlexander V. Chernikov 1875b074b7bbSAlexander V. Chernikov /* 1876b074b7bbSAlexander V. Chernikov * Stage 2: allocate table configs for every non-existent table 1877b074b7bbSAlexander V. Chernikov */ 1878b074b7bbSAlexander V. Chernikov 18799f7d47b0SAlexander V. Chernikov if (ci->new_tables > 0) { 18809490a627SAlexander V. Chernikov for (p = pidx_first; p < pidx_last; p++) { 1881b074b7bbSAlexander V. Chernikov if (p->new == 0) 1882b074b7bbSAlexander V. Chernikov continue; 1883b074b7bbSAlexander V. Chernikov 1884b074b7bbSAlexander V. Chernikov ti.uidx = p->uidx; 1885b074b7bbSAlexander V. Chernikov ti.type = p->type; 18869f7d47b0SAlexander V. Chernikov ti.atype = 0; 1887b074b7bbSAlexander V. Chernikov 18889490a627SAlexander V. Chernikov ta = find_table_algo(CHAIN_TO_TCFG(chain), &ti, NULL); 18899f7d47b0SAlexander V. Chernikov if (ta == NULL) { 18909f7d47b0SAlexander V. Chernikov error = ENOTSUP; 18919f7d47b0SAlexander V. Chernikov goto free; 18929f7d47b0SAlexander V. Chernikov } 18939490a627SAlexander V. Chernikov tc = alloc_table_config(ni, &ti, ta, NULL); 1894b074b7bbSAlexander V. Chernikov 1895b074b7bbSAlexander V. Chernikov if (tc == NULL) { 1896b074b7bbSAlexander V. Chernikov error = ENOMEM; 1897b074b7bbSAlexander V. Chernikov goto free; 1898b074b7bbSAlexander V. Chernikov } 1899b074b7bbSAlexander V. Chernikov 1900b074b7bbSAlexander V. Chernikov tc->no.kidx = p->kidx; 1901b074b7bbSAlexander V. Chernikov tc->no.refcnt = 1; 1902b074b7bbSAlexander V. Chernikov 1903b074b7bbSAlexander V. Chernikov /* Add to list */ 1904b074b7bbSAlexander V. Chernikov TAILQ_INSERT_TAIL(&nh, &tc->no, nn_next); 1905b074b7bbSAlexander V. Chernikov } 1906b074b7bbSAlexander V. Chernikov 1907b074b7bbSAlexander V. Chernikov /* 1908b074b7bbSAlexander V. Chernikov * Stage 2.1: Check if we're going to create 2 tables 1909b074b7bbSAlexander V. Chernikov * with the same name, but different table types. 1910b074b7bbSAlexander V. Chernikov */ 1911b074b7bbSAlexander V. Chernikov TAILQ_FOREACH(no, &nh, nn_next) { 1912b074b7bbSAlexander V. Chernikov TAILQ_FOREACH(no_tmp, &nh, nn_next) { 19139490a627SAlexander V. Chernikov if (ipfw_objhash_same_name(ni, no, no_tmp) == 0) 1914b074b7bbSAlexander V. Chernikov continue; 1915b074b7bbSAlexander V. Chernikov if (no->type != no_tmp->type) { 1916b074b7bbSAlexander V. Chernikov error = EINVAL; 1917b074b7bbSAlexander V. Chernikov goto free; 1918b074b7bbSAlexander V. Chernikov } 1919b074b7bbSAlexander V. Chernikov } 1920b074b7bbSAlexander V. Chernikov } 19219f7d47b0SAlexander V. Chernikov } 1922b074b7bbSAlexander V. Chernikov 19239f7d47b0SAlexander V. Chernikov IPFW_UH_WLOCK(chain); 19249f7d47b0SAlexander V. Chernikov 19259f7d47b0SAlexander V. Chernikov if (ci->new_tables > 0) { 1926b074b7bbSAlexander V. Chernikov /* 1927b074b7bbSAlexander V. Chernikov * Stage 3: link & reference new table configs 1928b074b7bbSAlexander V. Chernikov */ 1929b074b7bbSAlexander V. Chernikov 1930b074b7bbSAlexander V. Chernikov 1931b074b7bbSAlexander V. Chernikov /* 1932b074b7bbSAlexander V. Chernikov * Step 3.1: Check if some tables we need to create have been 1933b074b7bbSAlexander V. Chernikov * already created with different table type. 1934b074b7bbSAlexander V. Chernikov */ 1935b074b7bbSAlexander V. Chernikov 1936b074b7bbSAlexander V. Chernikov error = 0; 1937b074b7bbSAlexander V. Chernikov TAILQ_FOREACH_SAFE(no, &nh, nn_next, no_tmp) { 1938b074b7bbSAlexander V. Chernikov no_n = ipfw_objhash_lookup_name(ni, no->set, no->name); 1939b074b7bbSAlexander V. Chernikov if (no_n == NULL) 1940b074b7bbSAlexander V. Chernikov continue; 1941b074b7bbSAlexander V. Chernikov 1942b074b7bbSAlexander V. Chernikov if (no_n->type != no->type) { 1943b074b7bbSAlexander V. Chernikov error = EINVAL; 1944b074b7bbSAlexander V. Chernikov break; 1945b074b7bbSAlexander V. Chernikov } 1946b074b7bbSAlexander V. Chernikov 1947b074b7bbSAlexander V. Chernikov } 1948b074b7bbSAlexander V. Chernikov 1949b074b7bbSAlexander V. Chernikov if (error != 0) { 1950b074b7bbSAlexander V. Chernikov /* 1951b074b7bbSAlexander V. Chernikov * Someone has allocated table with different table type. 1952b074b7bbSAlexander V. Chernikov * We have to rollback everything. 1953b074b7bbSAlexander V. Chernikov */ 1954b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(chain); 1955b074b7bbSAlexander V. Chernikov goto free; 1956b074b7bbSAlexander V. Chernikov } 1957b074b7bbSAlexander V. Chernikov 1958b074b7bbSAlexander V. Chernikov /* 19599f7d47b0SAlexander V. Chernikov * Attach new tables. 19609f7d47b0SAlexander V. Chernikov * We need to set table pointers for each new table, 1961b074b7bbSAlexander V. Chernikov * so we have to acquire main WLOCK. 1962b074b7bbSAlexander V. Chernikov */ 1963b074b7bbSAlexander V. Chernikov IPFW_WLOCK(chain); 1964b074b7bbSAlexander V. Chernikov TAILQ_FOREACH_SAFE(no, &nh, nn_next, no_tmp) { 1965b074b7bbSAlexander V. Chernikov no_n = ipfw_objhash_lookup_name(ni, no->set, no->name); 1966b074b7bbSAlexander V. Chernikov 19679490a627SAlexander V. Chernikov if (no_n == NULL) { 19689490a627SAlexander V. Chernikov /* New table. Attach to runtime hash */ 19699490a627SAlexander V. Chernikov TAILQ_REMOVE(&nh, no, nn_next); 19709490a627SAlexander V. Chernikov link_table(chain, (struct table_config *)no); 1971b074b7bbSAlexander V. Chernikov continue; 1972b074b7bbSAlexander V. Chernikov } 1973b074b7bbSAlexander V. Chernikov 19749490a627SAlexander V. Chernikov /* 19759490a627SAlexander V. Chernikov * Newly-allocated table with the same type. 19769490a627SAlexander V. Chernikov * Reference it and update out @pidx array 19779490a627SAlexander V. Chernikov * rewrite info. 19789490a627SAlexander V. Chernikov */ 19799490a627SAlexander V. Chernikov no_n->refcnt++; 19809490a627SAlexander V. Chernikov /* Keep oib array in sync: update kidx */ 19819490a627SAlexander V. Chernikov for (p = pidx_first; p < pidx_last; p++) { 19829490a627SAlexander V. Chernikov if (p->kidx != no->kidx) 19839490a627SAlexander V. Chernikov continue; 19849490a627SAlexander V. Chernikov /* Update kidx */ 19859490a627SAlexander V. Chernikov p->kidx = no_n->kidx; 19869490a627SAlexander V. Chernikov break; 19879490a627SAlexander V. Chernikov } 1988b074b7bbSAlexander V. Chernikov } 1989b074b7bbSAlexander V. Chernikov IPFW_WUNLOCK(chain); 19909f7d47b0SAlexander V. Chernikov } 1991b074b7bbSAlexander V. Chernikov 1992b074b7bbSAlexander V. Chernikov /* Perform rule rewrite */ 1993b074b7bbSAlexander V. Chernikov l = ci->krule->cmd_len; 1994b074b7bbSAlexander V. Chernikov cmd = ci->krule->cmd; 1995b074b7bbSAlexander V. Chernikov cmdlen = 0; 19969490a627SAlexander V. Chernikov p = pidx_first; 1997b074b7bbSAlexander V. Chernikov for ( ; l > 0 ; l -= cmdlen, cmd += cmdlen) { 1998b074b7bbSAlexander V. Chernikov cmdlen = F_LEN(cmd); 1999b074b7bbSAlexander V. Chernikov 2000b074b7bbSAlexander V. Chernikov if (classify_table_opcode(cmd, &uidx, &type) != 0) 2001b074b7bbSAlexander V. Chernikov continue; 20029490a627SAlexander V. Chernikov update_table_opcode(cmd, p->kidx); 20039490a627SAlexander V. Chernikov p++; 2004b074b7bbSAlexander V. Chernikov } 2005b074b7bbSAlexander V. Chernikov 2006b074b7bbSAlexander V. Chernikov IPFW_UH_WUNLOCK(chain); 2007b074b7bbSAlexander V. Chernikov 2008b074b7bbSAlexander V. Chernikov error = 0; 2009b074b7bbSAlexander V. Chernikov 2010b074b7bbSAlexander V. Chernikov /* 2011b074b7bbSAlexander V. Chernikov * Stage 4: free resources 2012b074b7bbSAlexander V. Chernikov */ 2013b074b7bbSAlexander V. Chernikov free: 20149490a627SAlexander V. Chernikov if (!TAILQ_EMPTY(&nh)) { 20159490a627SAlexander V. Chernikov /* Free indexes first */ 20169490a627SAlexander V. Chernikov IPFW_UH_WLOCK(chain); 20179490a627SAlexander V. Chernikov TAILQ_FOREACH_SAFE(no, &nh, nn_next, no_tmp) { 2018ac35ff17SAlexander V. Chernikov ipfw_objhash_free_idx(ni, no->kidx); 20199490a627SAlexander V. Chernikov } 20209490a627SAlexander V. Chernikov IPFW_UH_WUNLOCK(chain); 20219490a627SAlexander V. Chernikov /* Free configs */ 2022b074b7bbSAlexander V. Chernikov TAILQ_FOREACH_SAFE(no, &nh, nn_next, no_tmp) 2023b074b7bbSAlexander V. Chernikov free_table_config(ni, tc); 20249490a627SAlexander V. Chernikov } 2025b074b7bbSAlexander V. Chernikov 20269490a627SAlexander V. Chernikov if (pidx_first != ci->obuf) 20279490a627SAlexander V. Chernikov free(pidx_first, M_IPFW); 2028b074b7bbSAlexander V. Chernikov 2029b074b7bbSAlexander V. Chernikov return (error); 2030b074b7bbSAlexander V. Chernikov } 2031b074b7bbSAlexander V. Chernikov 2032b074b7bbSAlexander V. Chernikov /* 2033b074b7bbSAlexander V. Chernikov * Remove references from every table used in @rule. 2034b074b7bbSAlexander V. Chernikov */ 2035b074b7bbSAlexander V. Chernikov void 2036b074b7bbSAlexander V. Chernikov ipfw_unbind_table_rule(struct ip_fw_chain *chain, struct ip_fw *rule) 2037b074b7bbSAlexander V. Chernikov { 2038b074b7bbSAlexander V. Chernikov int cmdlen, l; 2039b074b7bbSAlexander V. Chernikov ipfw_insn *cmd; 2040b074b7bbSAlexander V. Chernikov struct namedobj_instance *ni; 2041b074b7bbSAlexander V. Chernikov struct named_object *no; 2042b074b7bbSAlexander V. Chernikov uint32_t set; 2043b074b7bbSAlexander V. Chernikov uint16_t kidx; 2044b074b7bbSAlexander V. Chernikov uint8_t type; 2045b074b7bbSAlexander V. Chernikov 2046b074b7bbSAlexander V. Chernikov ni = CHAIN_TO_NI(chain); 2047b074b7bbSAlexander V. Chernikov 2048b074b7bbSAlexander V. Chernikov set = TABLE_SET(rule->set); 2049b074b7bbSAlexander V. Chernikov 2050b074b7bbSAlexander V. Chernikov l = rule->cmd_len; 2051b074b7bbSAlexander V. Chernikov cmd = rule->cmd; 2052b074b7bbSAlexander V. Chernikov cmdlen = 0; 2053b074b7bbSAlexander V. Chernikov for ( ; l > 0 ; l -= cmdlen, cmd += cmdlen) { 2054b074b7bbSAlexander V. Chernikov cmdlen = F_LEN(cmd); 2055b074b7bbSAlexander V. Chernikov 2056b074b7bbSAlexander V. Chernikov if (classify_table_opcode(cmd, &kidx, &type) != 0) 2057b074b7bbSAlexander V. Chernikov continue; 2058b074b7bbSAlexander V. Chernikov 2059ac35ff17SAlexander V. Chernikov no = ipfw_objhash_lookup_kidx(ni, kidx); 2060b074b7bbSAlexander V. Chernikov 2061b074b7bbSAlexander V. Chernikov KASSERT(no != NULL, ("table id %d not found", kidx)); 2062b074b7bbSAlexander V. Chernikov KASSERT(no->type == type, ("wrong type %d (%d) for table id %d", 2063b074b7bbSAlexander V. Chernikov no->type, type, kidx)); 2064b074b7bbSAlexander V. Chernikov KASSERT(no->refcnt > 0, ("refcount for table %d is %d", 2065b074b7bbSAlexander V. Chernikov kidx, no->refcnt)); 2066b074b7bbSAlexander V. Chernikov 2067b074b7bbSAlexander V. Chernikov no->refcnt--; 2068b074b7bbSAlexander V. Chernikov } 2069b074b7bbSAlexander V. Chernikov } 2070b074b7bbSAlexander V. Chernikov 2071b074b7bbSAlexander V. Chernikov 2072b074b7bbSAlexander V. Chernikov /* 2073b074b7bbSAlexander V. Chernikov * Removes table bindings for every rule in rule chain @head. 2074b074b7bbSAlexander V. Chernikov */ 2075b074b7bbSAlexander V. Chernikov void 2076b074b7bbSAlexander V. Chernikov ipfw_unbind_table_list(struct ip_fw_chain *chain, struct ip_fw *head) 2077b074b7bbSAlexander V. Chernikov { 2078b074b7bbSAlexander V. Chernikov struct ip_fw *rule; 2079b074b7bbSAlexander V. Chernikov 2080b074b7bbSAlexander V. Chernikov while ((rule = head) != NULL) { 2081b074b7bbSAlexander V. Chernikov head = head->x_next; 2082b074b7bbSAlexander V. Chernikov ipfw_unbind_table_rule(chain, rule); 2083b074b7bbSAlexander V. Chernikov } 2084b074b7bbSAlexander V. Chernikov } 2085b074b7bbSAlexander V. Chernikov 2086b074b7bbSAlexander V. Chernikov 20873b3a8eb9SGleb Smirnoff /* end of file */ 2088