17c478bd9Sstevel@tonic-gate /* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 545916cd2Sjpk * Common Development and Distribution License (the "License"). 645916cd2Sjpk * You may not use this file except in compliance with the License. 77c478bd9Sstevel@tonic-gate * 87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 117c478bd9Sstevel@tonic-gate * and limitations under the License. 127c478bd9Sstevel@tonic-gate * 137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 187c478bd9Sstevel@tonic-gate * 197c478bd9Sstevel@tonic-gate * CDDL HEADER END 207c478bd9Sstevel@tonic-gate */ 217c478bd9Sstevel@tonic-gate /* 22107875b0Ssangeeta * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 237c478bd9Sstevel@tonic-gate * Use is subject to license terms. 247c478bd9Sstevel@tonic-gate */ 257c478bd9Sstevel@tonic-gate /* Copyright (c) 1990 Mentat Inc. */ 267c478bd9Sstevel@tonic-gate 277c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 287c478bd9Sstevel@tonic-gate 297c478bd9Sstevel@tonic-gate 307c478bd9Sstevel@tonic-gate /* 317c478bd9Sstevel@tonic-gate * This file contains routines that manipulate Internet Routing Entries (IREs). 327c478bd9Sstevel@tonic-gate */ 337c478bd9Sstevel@tonic-gate 347c478bd9Sstevel@tonic-gate #include <sys/types.h> 357c478bd9Sstevel@tonic-gate #include <sys/stream.h> 367c478bd9Sstevel@tonic-gate #include <sys/stropts.h> 3745916cd2Sjpk #include <sys/strsun.h> 387c478bd9Sstevel@tonic-gate #include <sys/ddi.h> 397c478bd9Sstevel@tonic-gate #include <sys/cmn_err.h> 407c478bd9Sstevel@tonic-gate #include <sys/policy.h> 417c478bd9Sstevel@tonic-gate 427c478bd9Sstevel@tonic-gate #include <sys/systm.h> 437c478bd9Sstevel@tonic-gate #include <sys/kmem.h> 447c478bd9Sstevel@tonic-gate #include <sys/param.h> 457c478bd9Sstevel@tonic-gate #include <sys/socket.h> 467c478bd9Sstevel@tonic-gate #include <net/if.h> 477c478bd9Sstevel@tonic-gate #include <net/route.h> 487c478bd9Sstevel@tonic-gate #include <netinet/in.h> 497c478bd9Sstevel@tonic-gate #include <net/if_dl.h> 507c478bd9Sstevel@tonic-gate #include <netinet/ip6.h> 517c478bd9Sstevel@tonic-gate #include <netinet/icmp6.h> 527c478bd9Sstevel@tonic-gate 537c478bd9Sstevel@tonic-gate #include <inet/common.h> 547c478bd9Sstevel@tonic-gate #include <inet/mi.h> 557c478bd9Sstevel@tonic-gate #include <inet/ip.h> 567c478bd9Sstevel@tonic-gate #include <inet/ip6.h> 577c478bd9Sstevel@tonic-gate #include <inet/ip_ndp.h> 58c793af95Ssangeeta #include <inet/arp.h> 597c478bd9Sstevel@tonic-gate #include <inet/ip_if.h> 607c478bd9Sstevel@tonic-gate #include <inet/ip_ire.h> 61c793af95Ssangeeta #include <inet/ip_ftable.h> 627c478bd9Sstevel@tonic-gate #include <inet/ip_rts.h> 637c478bd9Sstevel@tonic-gate #include <inet/nd.h> 647c478bd9Sstevel@tonic-gate 657c478bd9Sstevel@tonic-gate #include <net/pfkeyv2.h> 667c478bd9Sstevel@tonic-gate #include <inet/ipsec_info.h> 677c478bd9Sstevel@tonic-gate #include <inet/sadb.h> 687c478bd9Sstevel@tonic-gate #include <sys/kmem.h> 697c478bd9Sstevel@tonic-gate #include <inet/tcp.h> 707c478bd9Sstevel@tonic-gate #include <inet/ipclassifier.h> 717c478bd9Sstevel@tonic-gate #include <sys/zone.h> 72f4b3ec61Sdh155122 #include <sys/cpuvar.h> 73f4b3ec61Sdh155122 7445916cd2Sjpk #include <sys/tsol/label.h> 7545916cd2Sjpk #include <sys/tsol/tnet.h> 76c0861880Ssangeeta #include <sys/dlpi.h> 7745916cd2Sjpk 78c793af95Ssangeeta struct kmem_cache *rt_entry_cache; 79c793af95Ssangeeta 807c478bd9Sstevel@tonic-gate /* 817c478bd9Sstevel@tonic-gate * Synchronization notes: 827c478bd9Sstevel@tonic-gate * 837c478bd9Sstevel@tonic-gate * The fields of the ire_t struct are protected in the following way : 847c478bd9Sstevel@tonic-gate * 857c478bd9Sstevel@tonic-gate * ire_next/ire_ptpn 867c478bd9Sstevel@tonic-gate * 877c478bd9Sstevel@tonic-gate * - bucket lock of the respective tables (cache or forwarding tables). 887c478bd9Sstevel@tonic-gate * 897c478bd9Sstevel@tonic-gate * ire_mp, ire_rfq, ire_stq, ire_u *except* ire_gateway_addr[v6], ire_mask, 907c478bd9Sstevel@tonic-gate * ire_type, ire_create_time, ire_masklen, ire_ipversion, ire_flags, ire_ipif, 917c478bd9Sstevel@tonic-gate * ire_ihandle, ire_phandle, ire_nce, ire_bucket, ire_in_ill, ire_in_src_addr 927c478bd9Sstevel@tonic-gate * 937c478bd9Sstevel@tonic-gate * - Set in ire_create_v4/v6 and never changes after that. Thus, 947c478bd9Sstevel@tonic-gate * we don't need a lock whenever these fields are accessed. 957c478bd9Sstevel@tonic-gate * 967c478bd9Sstevel@tonic-gate * - ire_bucket and ire_masklen (also set in ire_create) is set in 977c478bd9Sstevel@tonic-gate * ire_add_v4/ire_add_v6 before inserting in the bucket and never 987c478bd9Sstevel@tonic-gate * changes after that. Thus we don't need a lock whenever these 997c478bd9Sstevel@tonic-gate * fields are accessed. 1007c478bd9Sstevel@tonic-gate * 1017c478bd9Sstevel@tonic-gate * ire_gateway_addr_v4[v6] 1027c478bd9Sstevel@tonic-gate * 1037c478bd9Sstevel@tonic-gate * - ire_gateway_addr_v4[v6] is set during ire_create and later modified 1047c478bd9Sstevel@tonic-gate * by rts_setgwr[v6]. As ire_gateway_addr is a uint32_t, updates to 1057c478bd9Sstevel@tonic-gate * it assumed to be atomic and hence the other parts of the code 1067c478bd9Sstevel@tonic-gate * does not use any locks. ire_gateway_addr_v6 updates are not atomic 1077c478bd9Sstevel@tonic-gate * and hence any access to it uses ire_lock to get/set the right value. 1087c478bd9Sstevel@tonic-gate * 1097c478bd9Sstevel@tonic-gate * ire_ident, ire_refcnt 1107c478bd9Sstevel@tonic-gate * 1117c478bd9Sstevel@tonic-gate * - Updated atomically using atomic_add_32 1127c478bd9Sstevel@tonic-gate * 1137c478bd9Sstevel@tonic-gate * ire_ssthresh, ire_rtt_sd, ire_rtt, ire_ib_pkt_count, ire_ob_pkt_count 1147c478bd9Sstevel@tonic-gate * 1157c478bd9Sstevel@tonic-gate * - Assumes that 32 bit writes are atomic. No locks. ire_lock is 1167c478bd9Sstevel@tonic-gate * used to serialize updates to ire_ssthresh, ire_rtt_sd, ire_rtt. 1177c478bd9Sstevel@tonic-gate * 1187c478bd9Sstevel@tonic-gate * ire_max_frag, ire_frag_flag 1197c478bd9Sstevel@tonic-gate * 1207c478bd9Sstevel@tonic-gate * - ire_lock is used to set/read both of them together. 1217c478bd9Sstevel@tonic-gate * 1227c478bd9Sstevel@tonic-gate * ire_tire_mark 1237c478bd9Sstevel@tonic-gate * 1247c478bd9Sstevel@tonic-gate * - Set in ire_create and updated in ire_expire, which is called 1257c478bd9Sstevel@tonic-gate * by only one function namely ip_trash_timer_expire. Thus only 1267c478bd9Sstevel@tonic-gate * one function updates and examines the value. 1277c478bd9Sstevel@tonic-gate * 1287c478bd9Sstevel@tonic-gate * ire_marks 1297c478bd9Sstevel@tonic-gate * - bucket lock protects this. 1307c478bd9Sstevel@tonic-gate * 1317c478bd9Sstevel@tonic-gate * ire_ipsec_overhead/ire_ll_hdr_length 1327c478bd9Sstevel@tonic-gate * 1337c478bd9Sstevel@tonic-gate * - Place holder for returning the information to the upper layers 1347c478bd9Sstevel@tonic-gate * when IRE_DB_REQ comes down. 1357c478bd9Sstevel@tonic-gate * 1367c478bd9Sstevel@tonic-gate * 1377c478bd9Sstevel@tonic-gate * ipv6_ire_default_count is protected by the bucket lock of 1387c478bd9Sstevel@tonic-gate * ip_forwarding_table_v6[0][0]. 1397c478bd9Sstevel@tonic-gate * 140c793af95Ssangeeta * ipv6_ire_default_index is not protected as it is just a hint 141c793af95Ssangeeta * at which default gateway to use. There is nothing 1427c478bd9Sstevel@tonic-gate * wrong in using the same gateway for two different connections. 1437c478bd9Sstevel@tonic-gate * 1447c478bd9Sstevel@tonic-gate * As we always hold the bucket locks in all the places while accessing 1457c478bd9Sstevel@tonic-gate * the above values, it is natural to use them for protecting them. 1467c478bd9Sstevel@tonic-gate * 1477c478bd9Sstevel@tonic-gate * We have a separate cache table and forwarding table for IPv4 and IPv6. 1487c478bd9Sstevel@tonic-gate * Cache table (ip_cache_table/ip_cache_table_v6) is a pointer to an 1497c478bd9Sstevel@tonic-gate * array of irb_t structure and forwarding table (ip_forwarding_table/ 1507c478bd9Sstevel@tonic-gate * ip_forwarding_table_v6) is an array of pointers to array of irb_t 151f4b3ec61Sdh155122 * structure. ip_forwarding_table_v6 is allocated dynamically in 152f4b3ec61Sdh155122 * ire_add_v6. ire_ft_init_lock is used to serialize multiple threads 1537c478bd9Sstevel@tonic-gate * initializing the same bucket. Once a bucket is initialized, it is never 154f4b3ec61Sdh155122 * de-alloacted. This assumption enables us to access 155f4b3ec61Sdh155122 * ip_forwarding_table_v6[i] without any locks. 1567c478bd9Sstevel@tonic-gate * 1577c478bd9Sstevel@tonic-gate * Each irb_t - ire bucket structure has a lock to protect 1587c478bd9Sstevel@tonic-gate * a bucket and the ires residing in the bucket have a back pointer to 1597c478bd9Sstevel@tonic-gate * the bucket structure. It also has a reference count for the number 1607c478bd9Sstevel@tonic-gate * of threads walking the bucket - irb_refcnt which is bumped up 1617c478bd9Sstevel@tonic-gate * using the macro IRB_REFHOLD macro. The flags irb_flags can be 1627c478bd9Sstevel@tonic-gate * set to IRE_MARK_CONDEMNED indicating that there are some ires 1637c478bd9Sstevel@tonic-gate * in this bucket that are marked with IRE_MARK_CONDEMNED and the 1647c478bd9Sstevel@tonic-gate * last thread to leave the bucket should delete the ires. Usually 1657c478bd9Sstevel@tonic-gate * this is done by the IRB_REFRELE macro which is used to decrement 1667c478bd9Sstevel@tonic-gate * the reference count on a bucket. 1677c478bd9Sstevel@tonic-gate * 1687c478bd9Sstevel@tonic-gate * IRE_REFHOLD/IRE_REFRELE macros operate on the ire which increments/ 1697c478bd9Sstevel@tonic-gate * decrements the reference count, ire_refcnt, atomically on the ire. 1707c478bd9Sstevel@tonic-gate * ire_refcnt is modified only using this macro. Operations on the IRE 1717c478bd9Sstevel@tonic-gate * could be described as follows : 1727c478bd9Sstevel@tonic-gate * 1737c478bd9Sstevel@tonic-gate * CREATE an ire with reference count initialized to 1. 1747c478bd9Sstevel@tonic-gate * 1757c478bd9Sstevel@tonic-gate * ADDITION of an ire holds the bucket lock, checks for duplicates 1767c478bd9Sstevel@tonic-gate * and then adds the ire. ire_add_v4/ire_add_v6 returns the ire after 1777c478bd9Sstevel@tonic-gate * bumping up once more i.e the reference count is 2. This is to avoid 1787c478bd9Sstevel@tonic-gate * an extra lookup in the functions calling ire_add which wants to 1797c478bd9Sstevel@tonic-gate * work with the ire after adding. 1807c478bd9Sstevel@tonic-gate * 1817c478bd9Sstevel@tonic-gate * LOOKUP of an ire bumps up the reference count using IRE_REFHOLD 1827c478bd9Sstevel@tonic-gate * macro. It is valid to bump up the referece count of the IRE, 1837c478bd9Sstevel@tonic-gate * after the lookup has returned an ire. Following are the lookup 1847c478bd9Sstevel@tonic-gate * functions that return an HELD ire : 1857c478bd9Sstevel@tonic-gate * 1867c478bd9Sstevel@tonic-gate * ire_lookup_local[_v6], ire_ctable_lookup[_v6], ire_ftable_lookup[_v6], 1877c478bd9Sstevel@tonic-gate * ire_cache_lookup[_v6], ire_lookup_multi[_v6], ire_route_lookup[_v6], 1887c478bd9Sstevel@tonic-gate * ipif_to_ire[_v6], ire_mrtun_lookup, ire_srcif_table_lookup. 1897c478bd9Sstevel@tonic-gate * 1907c478bd9Sstevel@tonic-gate * DELETION of an ire holds the bucket lock, removes it from the list 1917c478bd9Sstevel@tonic-gate * and then decrements the reference count for having removed from the list 1927c478bd9Sstevel@tonic-gate * by using the IRE_REFRELE macro. If some other thread has looked up 1937c478bd9Sstevel@tonic-gate * the ire, the reference count would have been bumped up and hence 1947c478bd9Sstevel@tonic-gate * this ire will not be freed once deleted. It will be freed once the 1957c478bd9Sstevel@tonic-gate * reference count drops to zero. 1967c478bd9Sstevel@tonic-gate * 1977c478bd9Sstevel@tonic-gate * Add and Delete acquires the bucket lock as RW_WRITER, while all the 1987c478bd9Sstevel@tonic-gate * lookups acquire the bucket lock as RW_READER. 1997c478bd9Sstevel@tonic-gate * 2007c478bd9Sstevel@tonic-gate * NOTE : The only functions that does the IRE_REFRELE when an ire is 2017c478bd9Sstevel@tonic-gate * passed as an argument are : 2027c478bd9Sstevel@tonic-gate * 2037c478bd9Sstevel@tonic-gate * 1) ip_wput_ire : This is because it IRE_REFHOLD/RELEs the 2047c478bd9Sstevel@tonic-gate * broadcast ires it looks up internally within 2057c478bd9Sstevel@tonic-gate * the function. Currently, for simplicity it does 2067c478bd9Sstevel@tonic-gate * not differentiate the one that is passed in and 2077c478bd9Sstevel@tonic-gate * the ones it looks up internally. It always 2087c478bd9Sstevel@tonic-gate * IRE_REFRELEs. 2097c478bd9Sstevel@tonic-gate * 2) ire_send 2107c478bd9Sstevel@tonic-gate * ire_send_v6 : As ire_send calls ip_wput_ire and other functions 2117c478bd9Sstevel@tonic-gate * that take ire as an argument, it has to selectively 2127c478bd9Sstevel@tonic-gate * IRE_REFRELE the ire. To maintain symmetry, 2137c478bd9Sstevel@tonic-gate * ire_send_v6 does the same. 2147c478bd9Sstevel@tonic-gate * 2157c478bd9Sstevel@tonic-gate * Otherwise, the general rule is to do the IRE_REFRELE in the function 2167c478bd9Sstevel@tonic-gate * that is passing the ire as an argument. 2177c478bd9Sstevel@tonic-gate * 2187c478bd9Sstevel@tonic-gate * In trying to locate ires the following points are to be noted. 2197c478bd9Sstevel@tonic-gate * 2207c478bd9Sstevel@tonic-gate * IRE_MARK_CONDEMNED signifies that the ire has been logically deleted and is 2217c478bd9Sstevel@tonic-gate * to be ignored when walking the ires using ire_next. 2227c478bd9Sstevel@tonic-gate * 2237c478bd9Sstevel@tonic-gate * IRE_MARK_HIDDEN signifies that the ire is a special ire typically for the 2247c478bd9Sstevel@tonic-gate * benefit of in.mpathd which needs to probe interfaces for failures. Normal 2257c478bd9Sstevel@tonic-gate * applications should not be seeing this ire and hence this ire is ignored 2267c478bd9Sstevel@tonic-gate * in most cases in the search using ire_next. 2277c478bd9Sstevel@tonic-gate * 2287c478bd9Sstevel@tonic-gate * Zones note: 2297c478bd9Sstevel@tonic-gate * Walking IREs within a given zone also walks certain ires in other 2307c478bd9Sstevel@tonic-gate * zones. This is done intentionally. IRE walks with a specified 2317c478bd9Sstevel@tonic-gate * zoneid are used only when doing informational reports, and 2327c478bd9Sstevel@tonic-gate * zone users want to see things that they can access. See block 2337c478bd9Sstevel@tonic-gate * comment in ire_walk_ill_match(). 2347c478bd9Sstevel@tonic-gate */ 2357c478bd9Sstevel@tonic-gate 2367c478bd9Sstevel@tonic-gate /* 2377c478bd9Sstevel@tonic-gate * A per-interface routing table is created ( if not present) 2387c478bd9Sstevel@tonic-gate * when the first entry is added to this special routing table. 2397c478bd9Sstevel@tonic-gate * This special routing table is accessed through the ill data structure. 2407c478bd9Sstevel@tonic-gate * The routing table looks like cache table. For example, currently it 2417c478bd9Sstevel@tonic-gate * is used by mobile-ip foreign agent to forward data that only comes from 2427c478bd9Sstevel@tonic-gate * the home agent tunnel for a mobile node. Thus if the outgoing interface 2437c478bd9Sstevel@tonic-gate * is a RESOLVER interface, IP may need to resolve the hardware address for 2447c478bd9Sstevel@tonic-gate * the outgoing interface. The routing entries in this table are not updated 2457c478bd9Sstevel@tonic-gate * in IRE_CACHE. When MCTL msg comes back from ARP, the incoming ill informa- 2467c478bd9Sstevel@tonic-gate * tion is lost as the write queue is passed to ip_wput. 2477c478bd9Sstevel@tonic-gate * But, before sending the packet out, the hardware information must be updated 2487c478bd9Sstevel@tonic-gate * in the special forwarding table. ire_srcif_table_count keeps track of total 2497c478bd9Sstevel@tonic-gate * number of ires that are in interface based tables. Each interface based 2507c478bd9Sstevel@tonic-gate * table hangs off of the incoming ill and each ill_t also keeps a refcnt 2517c478bd9Sstevel@tonic-gate * of ires in that table. 2527c478bd9Sstevel@tonic-gate */ 2537c478bd9Sstevel@tonic-gate 2547c478bd9Sstevel@tonic-gate /* 2557c478bd9Sstevel@tonic-gate * The minimum size of IRE cache table. It will be recalcuated in 2567c478bd9Sstevel@tonic-gate * ip_ire_init(). 257f4b3ec61Sdh155122 * Setable in /etc/system 2587c478bd9Sstevel@tonic-gate */ 2597c478bd9Sstevel@tonic-gate uint32_t ip_cache_table_size = IP_CACHE_TABLE_SIZE; 2607c478bd9Sstevel@tonic-gate uint32_t ip6_cache_table_size = IP6_CACHE_TABLE_SIZE; 2617c478bd9Sstevel@tonic-gate 2627c478bd9Sstevel@tonic-gate /* 2637c478bd9Sstevel@tonic-gate * The size of the forwarding table. We will make sure that it is a 2647c478bd9Sstevel@tonic-gate * power of 2 in ip_ire_init(). 265f4b3ec61Sdh155122 * Setable in /etc/system 2667c478bd9Sstevel@tonic-gate */ 2677c478bd9Sstevel@tonic-gate uint32_t ip6_ftable_hash_size = IP6_FTABLE_HASH_SIZE; 2687c478bd9Sstevel@tonic-gate 2697c478bd9Sstevel@tonic-gate struct kmem_cache *ire_cache; 2707c478bd9Sstevel@tonic-gate static ire_t ire_null; 2717c478bd9Sstevel@tonic-gate 2727c478bd9Sstevel@tonic-gate /* 2737c478bd9Sstevel@tonic-gate * The threshold number of IRE in a bucket when the IREs are 2747c478bd9Sstevel@tonic-gate * cleaned up. This threshold is calculated later in ip_open() 2757c478bd9Sstevel@tonic-gate * based on the speed of CPU and available memory. This default 2767c478bd9Sstevel@tonic-gate * value is the maximum. 2777c478bd9Sstevel@tonic-gate * 2787c478bd9Sstevel@tonic-gate * We have two kinds of cached IRE, temporary and 2797c478bd9Sstevel@tonic-gate * non-temporary. Temporary IREs are marked with 2807c478bd9Sstevel@tonic-gate * IRE_MARK_TEMPORARY. They are IREs created for non 2817c478bd9Sstevel@tonic-gate * TCP traffic and for forwarding purposes. All others 2827c478bd9Sstevel@tonic-gate * are non-temporary IREs. We don't mark IRE created for 2837c478bd9Sstevel@tonic-gate * TCP as temporary because TCP is stateful and there are 2847c478bd9Sstevel@tonic-gate * info stored in the IRE which can be shared by other TCP 2857c478bd9Sstevel@tonic-gate * connections to the same destination. For connected 2867c478bd9Sstevel@tonic-gate * endpoint, we also don't want to mark the IRE used as 2877c478bd9Sstevel@tonic-gate * temporary because the same IRE will be used frequently, 2887c478bd9Sstevel@tonic-gate * otherwise, the app should not do a connect(). We change 2897c478bd9Sstevel@tonic-gate * the marking at ip_bind_connected_*() if necessary. 2907c478bd9Sstevel@tonic-gate * 2917c478bd9Sstevel@tonic-gate * We want to keep the cache IRE hash bucket length reasonably 2927c478bd9Sstevel@tonic-gate * short, otherwise IRE lookup functions will take "forever." 2937c478bd9Sstevel@tonic-gate * We use the "crude" function that the IRE bucket 2947c478bd9Sstevel@tonic-gate * length should be based on the CPU speed, which is 1 entry 2957c478bd9Sstevel@tonic-gate * per x MHz, depending on the shift factor ip_ire_cpu_ratio 2967c478bd9Sstevel@tonic-gate * (n). This means that with a 750MHz CPU, the max bucket 2977c478bd9Sstevel@tonic-gate * length can be (750 >> n) entries. 2987c478bd9Sstevel@tonic-gate * 2997c478bd9Sstevel@tonic-gate * Note that this threshold is separate for temp and non-temp 3007c478bd9Sstevel@tonic-gate * IREs. This means that the actual bucket length can be 3017c478bd9Sstevel@tonic-gate * twice as that. And while we try to keep temporary IRE 3027c478bd9Sstevel@tonic-gate * length at most at the threshold value, we do not attempt to 3037c478bd9Sstevel@tonic-gate * make the length for non-temporary IREs fixed, for the 3047c478bd9Sstevel@tonic-gate * reason stated above. Instead, we start trying to find 3057c478bd9Sstevel@tonic-gate * "unused" non-temporary IREs when the bucket length reaches 3067c478bd9Sstevel@tonic-gate * this threshold and clean them up. 3077c478bd9Sstevel@tonic-gate * 3087c478bd9Sstevel@tonic-gate * We also want to limit the amount of memory used by 3097c478bd9Sstevel@tonic-gate * IREs. So if we are allowed to use ~3% of memory (M) 3107c478bd9Sstevel@tonic-gate * for those IREs, each bucket should not have more than 3117c478bd9Sstevel@tonic-gate * 3127c478bd9Sstevel@tonic-gate * M / num of cache bucket / sizeof (ire_t) 3137c478bd9Sstevel@tonic-gate * 3147c478bd9Sstevel@tonic-gate * Again the above memory uses are separate for temp and 3157c478bd9Sstevel@tonic-gate * non-temp cached IREs. 3167c478bd9Sstevel@tonic-gate * 3177c478bd9Sstevel@tonic-gate * We may also want the limit to be a function of the number 3187c478bd9Sstevel@tonic-gate * of interfaces and number of CPUs. Doing the initialization 3197c478bd9Sstevel@tonic-gate * in ip_open() means that every time an interface is plumbed, 3207c478bd9Sstevel@tonic-gate * the max is re-calculated. Right now, we don't do anything 3217c478bd9Sstevel@tonic-gate * different. In future, when we have more experience, we 3227c478bd9Sstevel@tonic-gate * may want to change this behavior. 3237c478bd9Sstevel@tonic-gate */ 324f4b3ec61Sdh155122 uint32_t ip_ire_max_bucket_cnt = 10; /* Setable in /etc/system */ 3257c478bd9Sstevel@tonic-gate uint32_t ip6_ire_max_bucket_cnt = 10; 3267c478bd9Sstevel@tonic-gate 3277c478bd9Sstevel@tonic-gate /* 3287c478bd9Sstevel@tonic-gate * The minimum of the temporary IRE bucket count. We do not want 3297c478bd9Sstevel@tonic-gate * the length of each bucket to be too short. This may hurt 3307c478bd9Sstevel@tonic-gate * performance of some apps as the temporary IREs are removed too 3317c478bd9Sstevel@tonic-gate * often. 3327c478bd9Sstevel@tonic-gate */ 333f4b3ec61Sdh155122 uint32_t ip_ire_min_bucket_cnt = 3; /* /etc/system - not used */ 3347c478bd9Sstevel@tonic-gate uint32_t ip6_ire_min_bucket_cnt = 3; 3357c478bd9Sstevel@tonic-gate 3367c478bd9Sstevel@tonic-gate /* 3377c478bd9Sstevel@tonic-gate * The ratio of memory consumed by IRE used for temporary to available 3387c478bd9Sstevel@tonic-gate * memory. This is a shift factor, so 6 means the ratio 1 to 64. This 3397c478bd9Sstevel@tonic-gate * value can be changed in /etc/system. 6 is a reasonable number. 3407c478bd9Sstevel@tonic-gate */ 341f4b3ec61Sdh155122 uint32_t ip_ire_mem_ratio = 6; /* /etc/system */ 3427c478bd9Sstevel@tonic-gate /* The shift factor for CPU speed to calculate the max IRE bucket length. */ 343f4b3ec61Sdh155122 uint32_t ip_ire_cpu_ratio = 7; /* /etc/system */ 3447c478bd9Sstevel@tonic-gate 345c793af95Ssangeeta typedef struct nce_clookup_s { 346c793af95Ssangeeta ipaddr_t ncecl_addr; 347c793af95Ssangeeta boolean_t ncecl_found; 348c793af95Ssangeeta } nce_clookup_t; 349c793af95Ssangeeta 3507c478bd9Sstevel@tonic-gate /* 3517c478bd9Sstevel@tonic-gate * The maximum number of buckets in IRE cache table. In future, we may 3527c478bd9Sstevel@tonic-gate * want to make it a dynamic hash table. For the moment, we fix the 3537c478bd9Sstevel@tonic-gate * size and allocate the table in ip_ire_init() when IP is first loaded. 3547c478bd9Sstevel@tonic-gate * We take into account the amount of memory a system has. 3557c478bd9Sstevel@tonic-gate */ 3567c478bd9Sstevel@tonic-gate #define IP_MAX_CACHE_TABLE_SIZE 4096 3577c478bd9Sstevel@tonic-gate 358f4b3ec61Sdh155122 /* Setable in /etc/system */ 3597c478bd9Sstevel@tonic-gate static uint32_t ip_max_cache_table_size = IP_MAX_CACHE_TABLE_SIZE; 3607c478bd9Sstevel@tonic-gate static uint32_t ip6_max_cache_table_size = IP_MAX_CACHE_TABLE_SIZE; 3617c478bd9Sstevel@tonic-gate 3627c478bd9Sstevel@tonic-gate #define NUM_ILLS 3 /* To build the ILL list to unlock */ 3637c478bd9Sstevel@tonic-gate 3647c478bd9Sstevel@tonic-gate /* Zero iulp_t for initialization. */ 3657c478bd9Sstevel@tonic-gate const iulp_t ire_uinfo_null = { 0 }; 3667c478bd9Sstevel@tonic-gate 3677c478bd9Sstevel@tonic-gate static int ire_add_v4(ire_t **ire_p, queue_t *q, mblk_t *mp, 368c793af95Ssangeeta ipsq_func_t func, boolean_t); 3697c478bd9Sstevel@tonic-gate static int ire_add_srcif_v4(ire_t **ire_p, queue_t *q, mblk_t *mp, 3707c478bd9Sstevel@tonic-gate ipsq_func_t func); 3717c478bd9Sstevel@tonic-gate static ire_t *ire_update_srcif_v4(ire_t *ire); 3727c478bd9Sstevel@tonic-gate static void ire_delete_v4(ire_t *ire); 3737c478bd9Sstevel@tonic-gate static void ire_report_ctable(ire_t *ire, char *mp); 3747c478bd9Sstevel@tonic-gate static void ire_report_mrtun_table(ire_t *ire, char *mp); 375f4b3ec61Sdh155122 static void ire_report_srcif_table(ire_t *ire, char *mp, ip_stack_t *ipst); 37645916cd2Sjpk static void ire_walk_ipvers(pfv_t func, void *arg, uchar_t vers, 377f4b3ec61Sdh155122 zoneid_t zoneid, ip_stack_t *); 3787c478bd9Sstevel@tonic-gate static void ire_walk_ill_ipvers(uint_t match_flags, uint_t ire_type, 37945916cd2Sjpk pfv_t func, void *arg, uchar_t vers, ill_t *ill); 3807c478bd9Sstevel@tonic-gate static void ire_cache_cleanup(irb_t *irb, uint32_t threshold, int cnt); 3817c478bd9Sstevel@tonic-gate extern void ill_unlock_ills(ill_t **list, int cnt); 382c793af95Ssangeeta static void ip_nce_clookup_and_delete(nce_t *nce, void *arg); 3837c478bd9Sstevel@tonic-gate extern void th_trace_rrecord(th_trace_t *); 3847c478bd9Sstevel@tonic-gate #ifdef IRE_DEBUG 3857c478bd9Sstevel@tonic-gate static void ire_trace_inactive(ire_t *); 3867c478bd9Sstevel@tonic-gate #endif 3877c478bd9Sstevel@tonic-gate 3887c478bd9Sstevel@tonic-gate /* 3897c478bd9Sstevel@tonic-gate * To avoid bloating the code, we call this function instead of 3907c478bd9Sstevel@tonic-gate * using the macro IRE_REFRELE. Use macro only in performance 3917c478bd9Sstevel@tonic-gate * critical paths. 3927c478bd9Sstevel@tonic-gate * 3937c478bd9Sstevel@tonic-gate * Must not be called while holding any locks. Otherwise if this is 3947c478bd9Sstevel@tonic-gate * the last reference to be released there is a chance of recursive mutex 3957c478bd9Sstevel@tonic-gate * panic due to ire_refrele -> ipif_ill_refrele_tail -> qwriter_ip trying 3967c478bd9Sstevel@tonic-gate * to restart an ioctl. The one exception is when the caller is sure that 3977c478bd9Sstevel@tonic-gate * this is not the last reference to be released. Eg. if the caller is 3987c478bd9Sstevel@tonic-gate * sure that the ire has not been deleted and won't be deleted. 3997c478bd9Sstevel@tonic-gate */ 4007c478bd9Sstevel@tonic-gate void 4017c478bd9Sstevel@tonic-gate ire_refrele(ire_t *ire) 4027c478bd9Sstevel@tonic-gate { 4037c478bd9Sstevel@tonic-gate IRE_REFRELE(ire); 4047c478bd9Sstevel@tonic-gate } 4057c478bd9Sstevel@tonic-gate 4067c478bd9Sstevel@tonic-gate void 4077c478bd9Sstevel@tonic-gate ire_refrele_notr(ire_t *ire) 4087c478bd9Sstevel@tonic-gate { 4097c478bd9Sstevel@tonic-gate IRE_REFRELE_NOTR(ire); 4107c478bd9Sstevel@tonic-gate } 4117c478bd9Sstevel@tonic-gate 4127c478bd9Sstevel@tonic-gate /* 4137c478bd9Sstevel@tonic-gate * kmem_cache_alloc constructor for IRE in kma space. 4147c478bd9Sstevel@tonic-gate * Note that when ire_mp is set the IRE is stored in that mblk and 4157c478bd9Sstevel@tonic-gate * not in this cache. 4167c478bd9Sstevel@tonic-gate */ 4177c478bd9Sstevel@tonic-gate /* ARGSUSED */ 4187c478bd9Sstevel@tonic-gate static int 4197c478bd9Sstevel@tonic-gate ip_ire_constructor(void *buf, void *cdrarg, int kmflags) 4207c478bd9Sstevel@tonic-gate { 4217c478bd9Sstevel@tonic-gate ire_t *ire = buf; 4227c478bd9Sstevel@tonic-gate 423c793af95Ssangeeta ire->ire_nce = NULL; 4247c478bd9Sstevel@tonic-gate 4257c478bd9Sstevel@tonic-gate return (0); 4267c478bd9Sstevel@tonic-gate } 4277c478bd9Sstevel@tonic-gate 4287c478bd9Sstevel@tonic-gate /* ARGSUSED1 */ 4297c478bd9Sstevel@tonic-gate static void 4307c478bd9Sstevel@tonic-gate ip_ire_destructor(void *buf, void *cdrarg) 4317c478bd9Sstevel@tonic-gate { 4327c478bd9Sstevel@tonic-gate ire_t *ire = buf; 4337c478bd9Sstevel@tonic-gate 434c793af95Ssangeeta ASSERT(ire->ire_nce == NULL); 4357c478bd9Sstevel@tonic-gate } 4367c478bd9Sstevel@tonic-gate 4377c478bd9Sstevel@tonic-gate /* 4387c478bd9Sstevel@tonic-gate * This function is associated with the IP_IOC_IRE_ADVISE_NO_REPLY 4397c478bd9Sstevel@tonic-gate * IOCTL. It is used by TCP (or other ULPs) to supply revised information 4407c478bd9Sstevel@tonic-gate * for an existing CACHED IRE. 4417c478bd9Sstevel@tonic-gate */ 4427c478bd9Sstevel@tonic-gate /* ARGSUSED */ 4437c478bd9Sstevel@tonic-gate int 4447c478bd9Sstevel@tonic-gate ip_ire_advise(queue_t *q, mblk_t *mp, cred_t *ioc_cr) 4457c478bd9Sstevel@tonic-gate { 4467c478bd9Sstevel@tonic-gate uchar_t *addr_ucp; 4477c478bd9Sstevel@tonic-gate ipic_t *ipic; 4487c478bd9Sstevel@tonic-gate ire_t *ire; 4497c478bd9Sstevel@tonic-gate ipaddr_t addr; 4507c478bd9Sstevel@tonic-gate in6_addr_t v6addr; 4517c478bd9Sstevel@tonic-gate irb_t *irb; 4527c478bd9Sstevel@tonic-gate zoneid_t zoneid; 453f4b3ec61Sdh155122 ip_stack_t *ipst = CONNQ_TO_IPST(q); 4547c478bd9Sstevel@tonic-gate 4557c478bd9Sstevel@tonic-gate ASSERT(q->q_next == NULL); 4567c478bd9Sstevel@tonic-gate zoneid = Q_TO_CONN(q)->conn_zoneid; 4577c478bd9Sstevel@tonic-gate 4587c478bd9Sstevel@tonic-gate /* 4597c478bd9Sstevel@tonic-gate * Check privilege using the ioctl credential; if it is NULL 4607c478bd9Sstevel@tonic-gate * then this is a kernel message and therefor privileged. 4617c478bd9Sstevel@tonic-gate */ 462f4b3ec61Sdh155122 if (ioc_cr != NULL && secpolicy_ip_config(ioc_cr, B_FALSE) != 0) 4637c478bd9Sstevel@tonic-gate return (EPERM); 4647c478bd9Sstevel@tonic-gate 4657c478bd9Sstevel@tonic-gate ipic = (ipic_t *)mp->b_rptr; 4667c478bd9Sstevel@tonic-gate if (!(addr_ucp = mi_offset_param(mp, ipic->ipic_addr_offset, 4677c478bd9Sstevel@tonic-gate ipic->ipic_addr_length))) { 4687c478bd9Sstevel@tonic-gate return (EINVAL); 4697c478bd9Sstevel@tonic-gate } 4707c478bd9Sstevel@tonic-gate if (!OK_32PTR(addr_ucp)) 4717c478bd9Sstevel@tonic-gate return (EINVAL); 4727c478bd9Sstevel@tonic-gate switch (ipic->ipic_addr_length) { 4737c478bd9Sstevel@tonic-gate case IP_ADDR_LEN: { 4747c478bd9Sstevel@tonic-gate /* Extract the destination address. */ 4757c478bd9Sstevel@tonic-gate addr = *(ipaddr_t *)addr_ucp; 4767c478bd9Sstevel@tonic-gate /* Find the corresponding IRE. */ 477f4b3ec61Sdh155122 ire = ire_cache_lookup(addr, zoneid, NULL, ipst); 4787c478bd9Sstevel@tonic-gate break; 4797c478bd9Sstevel@tonic-gate } 4807c478bd9Sstevel@tonic-gate case IPV6_ADDR_LEN: { 4817c478bd9Sstevel@tonic-gate /* Extract the destination address. */ 4827c478bd9Sstevel@tonic-gate v6addr = *(in6_addr_t *)addr_ucp; 4837c478bd9Sstevel@tonic-gate /* Find the corresponding IRE. */ 484f4b3ec61Sdh155122 ire = ire_cache_lookup_v6(&v6addr, zoneid, NULL, ipst); 4857c478bd9Sstevel@tonic-gate break; 4867c478bd9Sstevel@tonic-gate } 4877c478bd9Sstevel@tonic-gate default: 4887c478bd9Sstevel@tonic-gate return (EINVAL); 4897c478bd9Sstevel@tonic-gate } 4907c478bd9Sstevel@tonic-gate 4917c478bd9Sstevel@tonic-gate if (ire == NULL) 4927c478bd9Sstevel@tonic-gate return (ENOENT); 4937c478bd9Sstevel@tonic-gate /* 4947c478bd9Sstevel@tonic-gate * Update the round trip time estimate and/or the max frag size 4957c478bd9Sstevel@tonic-gate * and/or the slow start threshold. 4967c478bd9Sstevel@tonic-gate * 4977c478bd9Sstevel@tonic-gate * We serialize multiple advises using ire_lock. 4987c478bd9Sstevel@tonic-gate */ 4997c478bd9Sstevel@tonic-gate mutex_enter(&ire->ire_lock); 5007c478bd9Sstevel@tonic-gate if (ipic->ipic_rtt) { 5017c478bd9Sstevel@tonic-gate /* 5027c478bd9Sstevel@tonic-gate * If there is no old cached values, initialize them 5037c478bd9Sstevel@tonic-gate * conservatively. Set them to be (1.5 * new value). 5047c478bd9Sstevel@tonic-gate */ 5057c478bd9Sstevel@tonic-gate if (ire->ire_uinfo.iulp_rtt != 0) { 5067c478bd9Sstevel@tonic-gate ire->ire_uinfo.iulp_rtt = (ire->ire_uinfo.iulp_rtt + 5077c478bd9Sstevel@tonic-gate ipic->ipic_rtt) >> 1; 5087c478bd9Sstevel@tonic-gate } else { 5097c478bd9Sstevel@tonic-gate ire->ire_uinfo.iulp_rtt = ipic->ipic_rtt + 5107c478bd9Sstevel@tonic-gate (ipic->ipic_rtt >> 1); 5117c478bd9Sstevel@tonic-gate } 5127c478bd9Sstevel@tonic-gate if (ire->ire_uinfo.iulp_rtt_sd != 0) { 5137c478bd9Sstevel@tonic-gate ire->ire_uinfo.iulp_rtt_sd = 5147c478bd9Sstevel@tonic-gate (ire->ire_uinfo.iulp_rtt_sd + 5157c478bd9Sstevel@tonic-gate ipic->ipic_rtt_sd) >> 1; 5167c478bd9Sstevel@tonic-gate } else { 5177c478bd9Sstevel@tonic-gate ire->ire_uinfo.iulp_rtt_sd = ipic->ipic_rtt_sd + 5187c478bd9Sstevel@tonic-gate (ipic->ipic_rtt_sd >> 1); 5197c478bd9Sstevel@tonic-gate } 5207c478bd9Sstevel@tonic-gate } 5217c478bd9Sstevel@tonic-gate if (ipic->ipic_max_frag) 5227c478bd9Sstevel@tonic-gate ire->ire_max_frag = MIN(ipic->ipic_max_frag, IP_MAXPACKET); 5237c478bd9Sstevel@tonic-gate if (ipic->ipic_ssthresh != 0) { 5247c478bd9Sstevel@tonic-gate if (ire->ire_uinfo.iulp_ssthresh != 0) 5257c478bd9Sstevel@tonic-gate ire->ire_uinfo.iulp_ssthresh = 5267c478bd9Sstevel@tonic-gate (ipic->ipic_ssthresh + 5277c478bd9Sstevel@tonic-gate ire->ire_uinfo.iulp_ssthresh) >> 1; 5287c478bd9Sstevel@tonic-gate else 5297c478bd9Sstevel@tonic-gate ire->ire_uinfo.iulp_ssthresh = ipic->ipic_ssthresh; 5307c478bd9Sstevel@tonic-gate } 5317c478bd9Sstevel@tonic-gate /* 5327c478bd9Sstevel@tonic-gate * Don't need the ire_lock below this. ire_type does not change 5337c478bd9Sstevel@tonic-gate * after initialization. ire_marks is protected by irb_lock. 5347c478bd9Sstevel@tonic-gate */ 5357c478bd9Sstevel@tonic-gate mutex_exit(&ire->ire_lock); 5367c478bd9Sstevel@tonic-gate 5377c478bd9Sstevel@tonic-gate if (ipic->ipic_ire_marks != 0 && ire->ire_type == IRE_CACHE) { 5387c478bd9Sstevel@tonic-gate /* 5397c478bd9Sstevel@tonic-gate * Only increment the temporary IRE count if the original 5407c478bd9Sstevel@tonic-gate * IRE is not already marked temporary. 5417c478bd9Sstevel@tonic-gate */ 5427c478bd9Sstevel@tonic-gate irb = ire->ire_bucket; 5437c478bd9Sstevel@tonic-gate rw_enter(&irb->irb_lock, RW_WRITER); 5447c478bd9Sstevel@tonic-gate if ((ipic->ipic_ire_marks & IRE_MARK_TEMPORARY) && 5457c478bd9Sstevel@tonic-gate !(ire->ire_marks & IRE_MARK_TEMPORARY)) { 5467c478bd9Sstevel@tonic-gate irb->irb_tmp_ire_cnt++; 5477c478bd9Sstevel@tonic-gate } 5487c478bd9Sstevel@tonic-gate ire->ire_marks |= ipic->ipic_ire_marks; 5497c478bd9Sstevel@tonic-gate rw_exit(&irb->irb_lock); 5507c478bd9Sstevel@tonic-gate } 5517c478bd9Sstevel@tonic-gate 5527c478bd9Sstevel@tonic-gate ire_refrele(ire); 5537c478bd9Sstevel@tonic-gate return (0); 5547c478bd9Sstevel@tonic-gate } 5557c478bd9Sstevel@tonic-gate 5567c478bd9Sstevel@tonic-gate /* 5577c478bd9Sstevel@tonic-gate * This function is associated with the IP_IOC_IRE_DELETE[_NO_REPLY] 5587c478bd9Sstevel@tonic-gate * IOCTL[s]. The NO_REPLY form is used by TCP to delete a route IRE 5597c478bd9Sstevel@tonic-gate * for a host that is not responding. This will force an attempt to 560dc041e83Scarlsonj * establish a new route, if available, and flush out the ARP entry so 561dc041e83Scarlsonj * it will re-resolve. Management processes may want to use the 562dc041e83Scarlsonj * version that generates a reply. 5637c478bd9Sstevel@tonic-gate * 5647c478bd9Sstevel@tonic-gate * This function does not support IPv6 since Neighbor Unreachability Detection 5657c478bd9Sstevel@tonic-gate * means that negative advise like this is useless. 5667c478bd9Sstevel@tonic-gate */ 5677c478bd9Sstevel@tonic-gate /* ARGSUSED */ 5687c478bd9Sstevel@tonic-gate int 5697c478bd9Sstevel@tonic-gate ip_ire_delete(queue_t *q, mblk_t *mp, cred_t *ioc_cr) 5707c478bd9Sstevel@tonic-gate { 5717c478bd9Sstevel@tonic-gate uchar_t *addr_ucp; 5727c478bd9Sstevel@tonic-gate ipaddr_t addr; 5737c478bd9Sstevel@tonic-gate ire_t *ire; 5747c478bd9Sstevel@tonic-gate ipid_t *ipid; 5757c478bd9Sstevel@tonic-gate boolean_t routing_sock_info = B_FALSE; /* Sent info? */ 5767c478bd9Sstevel@tonic-gate zoneid_t zoneid; 577c793af95Ssangeeta ire_t *gire = NULL; 578dc041e83Scarlsonj ill_t *ill; 579dc041e83Scarlsonj mblk_t *arp_mp; 580f4b3ec61Sdh155122 ip_stack_t *ipst; 5817c478bd9Sstevel@tonic-gate 5827c478bd9Sstevel@tonic-gate ASSERT(q->q_next == NULL); 5837c478bd9Sstevel@tonic-gate zoneid = Q_TO_CONN(q)->conn_zoneid; 584f4b3ec61Sdh155122 ipst = CONNQ_TO_IPST(q); 5857c478bd9Sstevel@tonic-gate 5867c478bd9Sstevel@tonic-gate /* 5877c478bd9Sstevel@tonic-gate * Check privilege using the ioctl credential; if it is NULL 5887c478bd9Sstevel@tonic-gate * then this is a kernel message and therefor privileged. 5897c478bd9Sstevel@tonic-gate */ 590f4b3ec61Sdh155122 if (ioc_cr != NULL && secpolicy_ip_config(ioc_cr, B_FALSE) != 0) 5917c478bd9Sstevel@tonic-gate return (EPERM); 5927c478bd9Sstevel@tonic-gate 5937c478bd9Sstevel@tonic-gate ipid = (ipid_t *)mp->b_rptr; 5947c478bd9Sstevel@tonic-gate 5957c478bd9Sstevel@tonic-gate /* Only actions on IRE_CACHEs are acceptable at present. */ 5967c478bd9Sstevel@tonic-gate if (ipid->ipid_ire_type != IRE_CACHE) 5977c478bd9Sstevel@tonic-gate return (EINVAL); 5987c478bd9Sstevel@tonic-gate 5997c478bd9Sstevel@tonic-gate addr_ucp = mi_offset_param(mp, ipid->ipid_addr_offset, 6007c478bd9Sstevel@tonic-gate ipid->ipid_addr_length); 6017c478bd9Sstevel@tonic-gate if (addr_ucp == NULL || !OK_32PTR(addr_ucp)) 6027c478bd9Sstevel@tonic-gate return (EINVAL); 6037c478bd9Sstevel@tonic-gate switch (ipid->ipid_addr_length) { 6047c478bd9Sstevel@tonic-gate case IP_ADDR_LEN: 6057c478bd9Sstevel@tonic-gate /* addr_ucp points at IP addr */ 6067c478bd9Sstevel@tonic-gate break; 6077c478bd9Sstevel@tonic-gate case sizeof (sin_t): { 6087c478bd9Sstevel@tonic-gate sin_t *sin; 6097c478bd9Sstevel@tonic-gate /* 6107c478bd9Sstevel@tonic-gate * got complete (sockaddr) address - increment addr_ucp to point 6117c478bd9Sstevel@tonic-gate * at the ip_addr field. 6127c478bd9Sstevel@tonic-gate */ 6137c478bd9Sstevel@tonic-gate sin = (sin_t *)addr_ucp; 6147c478bd9Sstevel@tonic-gate addr_ucp = (uchar_t *)&sin->sin_addr.s_addr; 6157c478bd9Sstevel@tonic-gate break; 6167c478bd9Sstevel@tonic-gate } 6177c478bd9Sstevel@tonic-gate default: 6187c478bd9Sstevel@tonic-gate return (EINVAL); 6197c478bd9Sstevel@tonic-gate } 6207c478bd9Sstevel@tonic-gate /* Extract the destination address. */ 6217c478bd9Sstevel@tonic-gate bcopy(addr_ucp, &addr, IP_ADDR_LEN); 6227c478bd9Sstevel@tonic-gate 6237c478bd9Sstevel@tonic-gate /* Try to find the CACHED IRE. */ 624f4b3ec61Sdh155122 ire = ire_cache_lookup(addr, zoneid, NULL, ipst); 6257c478bd9Sstevel@tonic-gate 6267c478bd9Sstevel@tonic-gate /* Nail it. */ 6277c478bd9Sstevel@tonic-gate if (ire) { 6287c478bd9Sstevel@tonic-gate /* Allow delete only on CACHE entries */ 6297c478bd9Sstevel@tonic-gate if (ire->ire_type != IRE_CACHE) { 6307c478bd9Sstevel@tonic-gate ire_refrele(ire); 6317c478bd9Sstevel@tonic-gate return (EINVAL); 6327c478bd9Sstevel@tonic-gate } 6337c478bd9Sstevel@tonic-gate 6347c478bd9Sstevel@tonic-gate /* 6357c478bd9Sstevel@tonic-gate * Verify that the IRE has been around for a while. 6367c478bd9Sstevel@tonic-gate * This is to protect against transport protocols 6377c478bd9Sstevel@tonic-gate * that are too eager in sending delete messages. 6387c478bd9Sstevel@tonic-gate */ 6397c478bd9Sstevel@tonic-gate if (gethrestime_sec() < 640f4b3ec61Sdh155122 ire->ire_create_time + ipst->ips_ip_ignore_delete_time) { 6417c478bd9Sstevel@tonic-gate ire_refrele(ire); 6427c478bd9Sstevel@tonic-gate return (EINVAL); 6437c478bd9Sstevel@tonic-gate } 6447c478bd9Sstevel@tonic-gate /* 6457c478bd9Sstevel@tonic-gate * Now we have a potentially dead cache entry. We need 6467c478bd9Sstevel@tonic-gate * to remove it. 647c793af95Ssangeeta * If this cache entry is generated from a 648c793af95Ssangeeta * default route (i.e., ire_cmask == 0), 6497c478bd9Sstevel@tonic-gate * search the default list and mark it dead and some 6507c478bd9Sstevel@tonic-gate * background process will try to activate it. 6517c478bd9Sstevel@tonic-gate */ 6527c478bd9Sstevel@tonic-gate if ((ire->ire_gateway_addr != 0) && (ire->ire_cmask == 0)) { 6537c478bd9Sstevel@tonic-gate /* 6547c478bd9Sstevel@tonic-gate * Make sure that we pick a different 6557c478bd9Sstevel@tonic-gate * IRE_DEFAULT next time. 6567c478bd9Sstevel@tonic-gate */ 6577c478bd9Sstevel@tonic-gate ire_t *gw_ire; 658c793af95Ssangeeta irb_t *irb = NULL; 659c793af95Ssangeeta uint_t match_flags; 6607c478bd9Sstevel@tonic-gate 661c793af95Ssangeeta match_flags = (MATCH_IRE_DEFAULT | MATCH_IRE_RJ_BHOLE); 662c793af95Ssangeeta 663c793af95Ssangeeta gire = ire_ftable_lookup(ire->ire_addr, 664c793af95Ssangeeta ire->ire_cmask, 0, 0, 665f4b3ec61Sdh155122 ire->ire_ipif, NULL, zoneid, 0, NULL, match_flags, 666f4b3ec61Sdh155122 ipst); 667c793af95Ssangeeta 668c793af95Ssangeeta ip3dbg(("ire_ftable_lookup() returned gire %p\n", 669c793af95Ssangeeta (void *)gire)); 670c793af95Ssangeeta 671c793af95Ssangeeta if (gire != NULL) { 672c793af95Ssangeeta irb = gire->ire_bucket; 6737c478bd9Sstevel@tonic-gate 6747c478bd9Sstevel@tonic-gate /* 6757c478bd9Sstevel@tonic-gate * We grab it as writer just to serialize 6767c478bd9Sstevel@tonic-gate * multiple threads trying to bump up 677c793af95Ssangeeta * irb_rr_origin 6787c478bd9Sstevel@tonic-gate */ 6797c478bd9Sstevel@tonic-gate rw_enter(&irb->irb_lock, RW_WRITER); 680c793af95Ssangeeta if ((gw_ire = irb->irb_rr_origin) == NULL) { 6817c478bd9Sstevel@tonic-gate rw_exit(&irb->irb_lock); 6827c478bd9Sstevel@tonic-gate goto done; 6837c478bd9Sstevel@tonic-gate } 684c793af95Ssangeeta 6850ad1ccddSsowmini DTRACE_PROBE1(ip__ire__del__origin, 6860ad1ccddSsowmini (ire_t *), gw_ire); 6877c478bd9Sstevel@tonic-gate 6887c478bd9Sstevel@tonic-gate /* Skip past the potentially bad gateway */ 6897c478bd9Sstevel@tonic-gate if (ire->ire_gateway_addr == 6900ad1ccddSsowmini gw_ire->ire_gateway_addr) { 6910ad1ccddSsowmini ire_t *next = gw_ire->ire_next; 6927c478bd9Sstevel@tonic-gate 6930ad1ccddSsowmini DTRACE_PROBE2(ip__ire__del, 6940ad1ccddSsowmini (ire_t *), gw_ire, (irb_t *), irb); 6950ad1ccddSsowmini IRE_FIND_NEXT_ORIGIN(next); 6960ad1ccddSsowmini irb->irb_rr_origin = next; 6970ad1ccddSsowmini } 6987c478bd9Sstevel@tonic-gate rw_exit(&irb->irb_lock); 6997c478bd9Sstevel@tonic-gate } 7007c478bd9Sstevel@tonic-gate } 7017c478bd9Sstevel@tonic-gate done: 702c793af95Ssangeeta if (gire != NULL) 703c793af95Ssangeeta IRE_REFRELE(gire); 7047c478bd9Sstevel@tonic-gate /* report the bad route to routing sockets */ 7057c478bd9Sstevel@tonic-gate ip_rts_change(RTM_LOSING, ire->ire_addr, ire->ire_gateway_addr, 7067c478bd9Sstevel@tonic-gate ire->ire_mask, ire->ire_src_addr, 0, 0, 0, 707f4b3ec61Sdh155122 (RTA_DST | RTA_GATEWAY | RTA_NETMASK | RTA_IFA), ipst); 7087c478bd9Sstevel@tonic-gate routing_sock_info = B_TRUE; 709dc041e83Scarlsonj 710dc041e83Scarlsonj /* 711dc041e83Scarlsonj * TCP is really telling us to start over completely, and it 712dc041e83Scarlsonj * expects that we'll resend the ARP query. Tell ARP to 713dc041e83Scarlsonj * discard the entry, if this is a local destination. 714dc041e83Scarlsonj */ 715dc041e83Scarlsonj ill = ire->ire_stq->q_ptr; 716dc041e83Scarlsonj if (ire->ire_gateway_addr == 0 && 717dc041e83Scarlsonj (arp_mp = ill_ared_alloc(ill, addr)) != NULL) { 718dc041e83Scarlsonj putnext(ill->ill_rq, arp_mp); 719dc041e83Scarlsonj } 720dc041e83Scarlsonj 7217c478bd9Sstevel@tonic-gate ire_delete(ire); 7227c478bd9Sstevel@tonic-gate ire_refrele(ire); 7237c478bd9Sstevel@tonic-gate } 7246bdb8e66Sdd193516 /* 7256bdb8e66Sdd193516 * Also look for an IRE_HOST type redirect ire and 7266bdb8e66Sdd193516 * remove it if present. 7276bdb8e66Sdd193516 */ 7286bdb8e66Sdd193516 ire = ire_route_lookup(addr, 0, 0, IRE_HOST, NULL, NULL, 729f4b3ec61Sdh155122 ALL_ZONES, NULL, MATCH_IRE_TYPE, ipst); 7307c478bd9Sstevel@tonic-gate 7317c478bd9Sstevel@tonic-gate /* Nail it. */ 7326bdb8e66Sdd193516 if (ire != NULL) { 7336bdb8e66Sdd193516 if (ire->ire_flags & RTF_DYNAMIC) { 7347c478bd9Sstevel@tonic-gate if (!routing_sock_info) { 7357c478bd9Sstevel@tonic-gate ip_rts_change(RTM_LOSING, ire->ire_addr, 7367c478bd9Sstevel@tonic-gate ire->ire_gateway_addr, ire->ire_mask, 7377c478bd9Sstevel@tonic-gate ire->ire_src_addr, 0, 0, 0, 738*54da8755Ssowmini (RTA_DST | RTA_GATEWAY | 739*54da8755Ssowmini RTA_NETMASK | RTA_IFA), 740f4b3ec61Sdh155122 ipst); 7417c478bd9Sstevel@tonic-gate } 7427c478bd9Sstevel@tonic-gate ire_delete(ire); 7436bdb8e66Sdd193516 } 7447c478bd9Sstevel@tonic-gate ire_refrele(ire); 7457c478bd9Sstevel@tonic-gate } 7467c478bd9Sstevel@tonic-gate return (0); 7477c478bd9Sstevel@tonic-gate } 7487c478bd9Sstevel@tonic-gate 7497c478bd9Sstevel@tonic-gate /* 7507c478bd9Sstevel@tonic-gate * Named Dispatch routine to produce a formatted report on all IREs. 7517c478bd9Sstevel@tonic-gate * This report is accessed by using the ndd utility to "get" ND variable 7527c478bd9Sstevel@tonic-gate * "ipv4_ire_status". 7537c478bd9Sstevel@tonic-gate */ 7547c478bd9Sstevel@tonic-gate /* ARGSUSED */ 7557c478bd9Sstevel@tonic-gate int 7567c478bd9Sstevel@tonic-gate ip_ire_report(queue_t *q, mblk_t *mp, caddr_t arg, cred_t *ioc_cr) 7577c478bd9Sstevel@tonic-gate { 7587c478bd9Sstevel@tonic-gate zoneid_t zoneid; 759f4b3ec61Sdh155122 ip_stack_t *ipst; 760f4b3ec61Sdh155122 761f4b3ec61Sdh155122 if (CONN_Q(q)) 762f4b3ec61Sdh155122 ipst = CONNQ_TO_IPST(q); 763f4b3ec61Sdh155122 else 764f4b3ec61Sdh155122 ipst = ILLQ_TO_IPST(q); 7657c478bd9Sstevel@tonic-gate 7667c478bd9Sstevel@tonic-gate (void) mi_mpprintf(mp, 7677c478bd9Sstevel@tonic-gate "IRE " MI_COL_HDRPAD_STR 7687c478bd9Sstevel@tonic-gate /* 01234567[89ABCDEF] */ 7697c478bd9Sstevel@tonic-gate "rfq " MI_COL_HDRPAD_STR 7707c478bd9Sstevel@tonic-gate /* 01234567[89ABCDEF] */ 7717c478bd9Sstevel@tonic-gate "stq " MI_COL_HDRPAD_STR 7727c478bd9Sstevel@tonic-gate /* 01234567[89ABCDEF] */ 7737c478bd9Sstevel@tonic-gate " zone " 7747c478bd9Sstevel@tonic-gate /* 12345 */ 7757c478bd9Sstevel@tonic-gate "addr mask " 7767c478bd9Sstevel@tonic-gate /* 123.123.123.123 123.123.123.123 */ 7777c478bd9Sstevel@tonic-gate "src gateway mxfrg rtt rtt_sd ssthresh ref " 7787c478bd9Sstevel@tonic-gate /* 123.123.123.123 123.123.123.123 12345 12345 123456 12345678 123 */ 7797c478bd9Sstevel@tonic-gate "rtomax tstamp_ok wscale_ok ecn_ok pmtud_ok sack sendpipe " 7807c478bd9Sstevel@tonic-gate /* 123456 123456789 123456789 123456 12345678 1234 12345678 */ 7817c478bd9Sstevel@tonic-gate "recvpipe in/out/forward type"); 7827c478bd9Sstevel@tonic-gate /* 12345678 in/out/forward xxxxxxxxxx */ 7837c478bd9Sstevel@tonic-gate 7847c478bd9Sstevel@tonic-gate /* 7857c478bd9Sstevel@tonic-gate * Because of the ndd constraint, at most we can have 64K buffer 7867c478bd9Sstevel@tonic-gate * to put in all IRE info. So to be more efficient, just 7877c478bd9Sstevel@tonic-gate * allocate a 64K buffer here, assuming we need that large buffer. 7887c478bd9Sstevel@tonic-gate * This should be OK as only root can do ndd /dev/ip. 7897c478bd9Sstevel@tonic-gate */ 7907c478bd9Sstevel@tonic-gate if ((mp->b_cont = allocb(ND_MAX_BUF_LEN, BPRI_HI)) == NULL) { 7917c478bd9Sstevel@tonic-gate /* The following may work even if we cannot get a large buf. */ 7927c478bd9Sstevel@tonic-gate (void) mi_mpprintf(mp, "<< Out of buffer >>\n"); 7937c478bd9Sstevel@tonic-gate return (0); 7947c478bd9Sstevel@tonic-gate } 7957c478bd9Sstevel@tonic-gate 7967c478bd9Sstevel@tonic-gate zoneid = Q_TO_CONN(q)->conn_zoneid; 7977c478bd9Sstevel@tonic-gate if (zoneid == GLOBAL_ZONEID) 7987c478bd9Sstevel@tonic-gate zoneid = ALL_ZONES; 7997c478bd9Sstevel@tonic-gate 800f4b3ec61Sdh155122 ire_walk_v4(ire_report_ftable, mp->b_cont, zoneid, ipst); 801f4b3ec61Sdh155122 ire_walk_v4(ire_report_ctable, mp->b_cont, zoneid, ipst); 8027c478bd9Sstevel@tonic-gate 8037c478bd9Sstevel@tonic-gate return (0); 8047c478bd9Sstevel@tonic-gate } 8057c478bd9Sstevel@tonic-gate 8067c478bd9Sstevel@tonic-gate 8077c478bd9Sstevel@tonic-gate /* ire_walk routine invoked for ip_ire_report for each cached IRE. */ 8087c478bd9Sstevel@tonic-gate static void 8097c478bd9Sstevel@tonic-gate ire_report_ctable(ire_t *ire, char *mp) 8107c478bd9Sstevel@tonic-gate { 8117c478bd9Sstevel@tonic-gate char buf1[16]; 8127c478bd9Sstevel@tonic-gate char buf2[16]; 8137c478bd9Sstevel@tonic-gate char buf3[16]; 8147c478bd9Sstevel@tonic-gate char buf4[16]; 8157c478bd9Sstevel@tonic-gate uint_t fo_pkt_count; 8167c478bd9Sstevel@tonic-gate uint_t ib_pkt_count; 8177c478bd9Sstevel@tonic-gate int ref; 8187c478bd9Sstevel@tonic-gate uint_t print_len, buf_len; 8197c478bd9Sstevel@tonic-gate 8207c478bd9Sstevel@tonic-gate if ((ire->ire_type & IRE_CACHETABLE) == 0) 8217c478bd9Sstevel@tonic-gate return; 8227c478bd9Sstevel@tonic-gate buf_len = ((mblk_t *)mp)->b_datap->db_lim - ((mblk_t *)mp)->b_wptr; 8237c478bd9Sstevel@tonic-gate if (buf_len <= 0) 8247c478bd9Sstevel@tonic-gate return; 8257c478bd9Sstevel@tonic-gate 8267c478bd9Sstevel@tonic-gate /* Number of active references of this ire */ 8277c478bd9Sstevel@tonic-gate ref = ire->ire_refcnt; 8287c478bd9Sstevel@tonic-gate /* "inbound" to a non local address is a forward */ 8297c478bd9Sstevel@tonic-gate ib_pkt_count = ire->ire_ib_pkt_count; 8307c478bd9Sstevel@tonic-gate fo_pkt_count = 0; 8317c478bd9Sstevel@tonic-gate if (!(ire->ire_type & (IRE_LOCAL|IRE_BROADCAST))) { 8327c478bd9Sstevel@tonic-gate fo_pkt_count = ib_pkt_count; 8337c478bd9Sstevel@tonic-gate ib_pkt_count = 0; 8347c478bd9Sstevel@tonic-gate } 8357c478bd9Sstevel@tonic-gate print_len = snprintf((char *)((mblk_t *)mp)->b_wptr, buf_len, 8367c478bd9Sstevel@tonic-gate MI_COL_PTRFMT_STR MI_COL_PTRFMT_STR MI_COL_PTRFMT_STR "%5d " 8377c478bd9Sstevel@tonic-gate "%s %s %s %s %05d %05ld %06ld %08d %03d %06d %09d %09d %06d %08d " 8387c478bd9Sstevel@tonic-gate "%04d %08d %08d %d/%d/%d %s\n", 8397c478bd9Sstevel@tonic-gate (void *)ire, (void *)ire->ire_rfq, (void *)ire->ire_stq, 8407c478bd9Sstevel@tonic-gate (int)ire->ire_zoneid, 8417c478bd9Sstevel@tonic-gate ip_dot_addr(ire->ire_addr, buf1), ip_dot_addr(ire->ire_mask, buf2), 8427c478bd9Sstevel@tonic-gate ip_dot_addr(ire->ire_src_addr, buf3), 8437c478bd9Sstevel@tonic-gate ip_dot_addr(ire->ire_gateway_addr, buf4), 8447c478bd9Sstevel@tonic-gate ire->ire_max_frag, ire->ire_uinfo.iulp_rtt, 8457c478bd9Sstevel@tonic-gate ire->ire_uinfo.iulp_rtt_sd, ire->ire_uinfo.iulp_ssthresh, ref, 8467c478bd9Sstevel@tonic-gate ire->ire_uinfo.iulp_rtomax, 8477c478bd9Sstevel@tonic-gate (ire->ire_uinfo.iulp_tstamp_ok ? 1: 0), 8487c478bd9Sstevel@tonic-gate (ire->ire_uinfo.iulp_wscale_ok ? 1: 0), 8497c478bd9Sstevel@tonic-gate (ire->ire_uinfo.iulp_ecn_ok ? 1: 0), 8507c478bd9Sstevel@tonic-gate (ire->ire_uinfo.iulp_pmtud_ok ? 1: 0), 8517c478bd9Sstevel@tonic-gate ire->ire_uinfo.iulp_sack, 8527c478bd9Sstevel@tonic-gate ire->ire_uinfo.iulp_spipe, ire->ire_uinfo.iulp_rpipe, 8537c478bd9Sstevel@tonic-gate ib_pkt_count, ire->ire_ob_pkt_count, fo_pkt_count, 8547c478bd9Sstevel@tonic-gate ip_nv_lookup(ire_nv_tbl, (int)ire->ire_type)); 8557c478bd9Sstevel@tonic-gate if (print_len < buf_len) { 8567c478bd9Sstevel@tonic-gate ((mblk_t *)mp)->b_wptr += print_len; 8577c478bd9Sstevel@tonic-gate } else { 8587c478bd9Sstevel@tonic-gate ((mblk_t *)mp)->b_wptr += buf_len; 8597c478bd9Sstevel@tonic-gate } 8607c478bd9Sstevel@tonic-gate } 8617c478bd9Sstevel@tonic-gate 8627c478bd9Sstevel@tonic-gate /* ARGSUSED */ 8637c478bd9Sstevel@tonic-gate int 8647c478bd9Sstevel@tonic-gate ip_ire_report_mrtun(queue_t *q, mblk_t *mp, caddr_t arg, cred_t *ioc_cr) 8657c478bd9Sstevel@tonic-gate { 866f4b3ec61Sdh155122 ip_stack_t *ipst; 867f4b3ec61Sdh155122 868f4b3ec61Sdh155122 if (CONN_Q(q)) 869f4b3ec61Sdh155122 ipst = CONNQ_TO_IPST(q); 870f4b3ec61Sdh155122 else 871f4b3ec61Sdh155122 ipst = ILLQ_TO_IPST(q); 872f4b3ec61Sdh155122 8737c478bd9Sstevel@tonic-gate (void) mi_mpprintf(mp, 8747c478bd9Sstevel@tonic-gate "IRE " MI_COL_HDRPAD_STR 8757c478bd9Sstevel@tonic-gate /* 01234567[89ABCDEF] */ 8767c478bd9Sstevel@tonic-gate "stq " MI_COL_HDRPAD_STR 8777c478bd9Sstevel@tonic-gate /* 01234567[89ABCDEF] */ 8787c478bd9Sstevel@tonic-gate "in_ill " MI_COL_HDRPAD_STR 8797c478bd9Sstevel@tonic-gate /* 01234567[89ABCDEF] */ 8807c478bd9Sstevel@tonic-gate "in_src_addr " 8817c478bd9Sstevel@tonic-gate /* 123.123.123.123 */ 8827c478bd9Sstevel@tonic-gate "max_frag " 8837c478bd9Sstevel@tonic-gate /* 12345 */ 8847c478bd9Sstevel@tonic-gate "ref "); 8857c478bd9Sstevel@tonic-gate /* 123 */ 8867c478bd9Sstevel@tonic-gate 887f4b3ec61Sdh155122 ire_walk_ill_mrtun(0, 0, ire_report_mrtun_table, mp, NULL, 888f4b3ec61Sdh155122 ipst); 8897c478bd9Sstevel@tonic-gate return (0); 8907c478bd9Sstevel@tonic-gate } 8917c478bd9Sstevel@tonic-gate 8927c478bd9Sstevel@tonic-gate /* mrtun report table - supports ipv4_mrtun_ire_status ndd variable */ 8937c478bd9Sstevel@tonic-gate 8947c478bd9Sstevel@tonic-gate static void 8957c478bd9Sstevel@tonic-gate ire_report_mrtun_table(ire_t *ire, char *mp) 8967c478bd9Sstevel@tonic-gate { 8977c478bd9Sstevel@tonic-gate char buf1[INET_ADDRSTRLEN]; 8987c478bd9Sstevel@tonic-gate int ref; 8997c478bd9Sstevel@tonic-gate 9007c478bd9Sstevel@tonic-gate /* Number of active references of this ire */ 9017c478bd9Sstevel@tonic-gate ref = ire->ire_refcnt; 9027c478bd9Sstevel@tonic-gate ASSERT(ire->ire_type == IRE_MIPRTUN); 9037c478bd9Sstevel@tonic-gate (void) mi_mpprintf((mblk_t *)mp, 9047c478bd9Sstevel@tonic-gate MI_COL_PTRFMT_STR MI_COL_PTRFMT_STR MI_COL_PTRFMT_STR 9057c478bd9Sstevel@tonic-gate "%s %05d %03d", 9067c478bd9Sstevel@tonic-gate (void *)ire, (void *)ire->ire_stq, 9077c478bd9Sstevel@tonic-gate (void *)ire->ire_in_ill, 9087c478bd9Sstevel@tonic-gate ip_dot_addr(ire->ire_in_src_addr, buf1), 9097c478bd9Sstevel@tonic-gate ire->ire_max_frag, ref); 9107c478bd9Sstevel@tonic-gate } 9117c478bd9Sstevel@tonic-gate 9127c478bd9Sstevel@tonic-gate /* 9137c478bd9Sstevel@tonic-gate * Dispatch routine to format ires in interface based routine 9147c478bd9Sstevel@tonic-gate */ 9157c478bd9Sstevel@tonic-gate /* ARGSUSED */ 9167c478bd9Sstevel@tonic-gate int 9177c478bd9Sstevel@tonic-gate ip_ire_report_srcif(queue_t *q, mblk_t *mp, caddr_t arg, cred_t *ioc_cr) 9187c478bd9Sstevel@tonic-gate { 919f4b3ec61Sdh155122 ip_stack_t *ipst; 920f4b3ec61Sdh155122 921f4b3ec61Sdh155122 if (CONN_Q(q)) 922f4b3ec61Sdh155122 ipst = CONNQ_TO_IPST(q); 923f4b3ec61Sdh155122 else 924f4b3ec61Sdh155122 ipst = ILLQ_TO_IPST(q); 9257c478bd9Sstevel@tonic-gate 9267c478bd9Sstevel@tonic-gate /* Report all interface based ires */ 9277c478bd9Sstevel@tonic-gate 9287c478bd9Sstevel@tonic-gate (void) mi_mpprintf(mp, 9297c478bd9Sstevel@tonic-gate "IRE " MI_COL_HDRPAD_STR 9307c478bd9Sstevel@tonic-gate /* 01234567[89ABCDEF] */ 9317c478bd9Sstevel@tonic-gate "stq " MI_COL_HDRPAD_STR 9327c478bd9Sstevel@tonic-gate /* 01234567[89ABCDEF] */ 9337c478bd9Sstevel@tonic-gate "in_ill " MI_COL_HDRPAD_STR 9347c478bd9Sstevel@tonic-gate /* 01234567[89ABCDEF] */ 9357c478bd9Sstevel@tonic-gate "addr " 9367c478bd9Sstevel@tonic-gate /* 123.123.123.123 */ 9377c478bd9Sstevel@tonic-gate "gateway " 9387c478bd9Sstevel@tonic-gate /* 123.123.123.123 */ 9397c478bd9Sstevel@tonic-gate "max_frag " 9407c478bd9Sstevel@tonic-gate /* 12345 */ 9417c478bd9Sstevel@tonic-gate "ref " 9427c478bd9Sstevel@tonic-gate /* 123 */ 9437c478bd9Sstevel@tonic-gate "type " 9447c478bd9Sstevel@tonic-gate /* ABCDEFGH */ 9457c478bd9Sstevel@tonic-gate "in/out/forward"); 946f4b3ec61Sdh155122 ire_walk_srcif_table_v4(ire_report_srcif_table, mp, ipst); 9477c478bd9Sstevel@tonic-gate return (0); 9487c478bd9Sstevel@tonic-gate } 9497c478bd9Sstevel@tonic-gate 9507c478bd9Sstevel@tonic-gate /* Reports the interface table ires */ 951f4b3ec61Sdh155122 /* ARGSUSED2 */ 9527c478bd9Sstevel@tonic-gate static void 953f4b3ec61Sdh155122 ire_report_srcif_table(ire_t *ire, char *mp, ip_stack_t *ipst) 9547c478bd9Sstevel@tonic-gate { 9557c478bd9Sstevel@tonic-gate char buf1[INET_ADDRSTRLEN]; 9567c478bd9Sstevel@tonic-gate char buf2[INET_ADDRSTRLEN]; 9577c478bd9Sstevel@tonic-gate int ref; 9587c478bd9Sstevel@tonic-gate 9597c478bd9Sstevel@tonic-gate ref = ire->ire_refcnt; 9607c478bd9Sstevel@tonic-gate (void) mi_mpprintf((mblk_t *)mp, 9617c478bd9Sstevel@tonic-gate MI_COL_PTRFMT_STR MI_COL_PTRFMT_STR MI_COL_PTRFMT_STR 9627c478bd9Sstevel@tonic-gate "%s %s %05d %03d %s %d", 9637c478bd9Sstevel@tonic-gate (void *)ire, (void *)ire->ire_stq, 9647c478bd9Sstevel@tonic-gate (void *)ire->ire_in_ill, 9657c478bd9Sstevel@tonic-gate ip_dot_addr(ire->ire_addr, buf1), 9667c478bd9Sstevel@tonic-gate ip_dot_addr(ire->ire_gateway_addr, buf2), 9677c478bd9Sstevel@tonic-gate ire->ire_max_frag, ref, 9687c478bd9Sstevel@tonic-gate ip_nv_lookup(ire_nv_tbl, (int)ire->ire_type), 9697c478bd9Sstevel@tonic-gate ire->ire_ib_pkt_count); 9707c478bd9Sstevel@tonic-gate 9717c478bd9Sstevel@tonic-gate } 9727c478bd9Sstevel@tonic-gate /* 9737c478bd9Sstevel@tonic-gate * ip_ire_req is called by ip_wput when an IRE_DB_REQ_TYPE message is handed 9747c478bd9Sstevel@tonic-gate * down from the Upper Level Protocol to request a copy of the IRE (to check 9757c478bd9Sstevel@tonic-gate * its type or to extract information like round-trip time estimates or the 9767c478bd9Sstevel@tonic-gate * MTU.) 9777c478bd9Sstevel@tonic-gate * The address is assumed to be in the ire_addr field. If no IRE is found 9787c478bd9Sstevel@tonic-gate * an IRE is returned with ire_type being zero. 9797c478bd9Sstevel@tonic-gate * Note that the upper lavel protocol has to check for broadcast 9807c478bd9Sstevel@tonic-gate * (IRE_BROADCAST) and multicast (CLASSD(addr)). 9817c478bd9Sstevel@tonic-gate * If there is a b_cont the resulting IRE_DB_TYPE mblk is placed at the 9827c478bd9Sstevel@tonic-gate * end of the returned message. 9837c478bd9Sstevel@tonic-gate * 9847c478bd9Sstevel@tonic-gate * TCP sends down a message of this type with a connection request packet 9857c478bd9Sstevel@tonic-gate * chained on. UDP and ICMP send it down to verify that a route exists for 9867c478bd9Sstevel@tonic-gate * the destination address when they get connected. 9877c478bd9Sstevel@tonic-gate */ 9887c478bd9Sstevel@tonic-gate void 9897c478bd9Sstevel@tonic-gate ip_ire_req(queue_t *q, mblk_t *mp) 9907c478bd9Sstevel@tonic-gate { 9917c478bd9Sstevel@tonic-gate ire_t *inire; 9927c478bd9Sstevel@tonic-gate ire_t *ire; 9937c478bd9Sstevel@tonic-gate mblk_t *mp1; 9947c478bd9Sstevel@tonic-gate ire_t *sire = NULL; 9957c478bd9Sstevel@tonic-gate zoneid_t zoneid = Q_TO_CONN(q)->conn_zoneid; 996f4b3ec61Sdh155122 ip_stack_t *ipst = CONNQ_TO_IPST(q); 997f4b3ec61Sdh155122 998f4b3ec61Sdh155122 ASSERT(q->q_next == NULL); 9997c478bd9Sstevel@tonic-gate 10007c478bd9Sstevel@tonic-gate if ((mp->b_wptr - mp->b_rptr) < sizeof (ire_t) || 10017c478bd9Sstevel@tonic-gate !OK_32PTR(mp->b_rptr)) { 10027c478bd9Sstevel@tonic-gate freemsg(mp); 10037c478bd9Sstevel@tonic-gate return; 10047c478bd9Sstevel@tonic-gate } 10057c478bd9Sstevel@tonic-gate inire = (ire_t *)mp->b_rptr; 10067c478bd9Sstevel@tonic-gate /* 10077c478bd9Sstevel@tonic-gate * Got it, now take our best shot at an IRE. 10087c478bd9Sstevel@tonic-gate */ 10097c478bd9Sstevel@tonic-gate if (inire->ire_ipversion == IPV6_VERSION) { 10107c478bd9Sstevel@tonic-gate ire = ire_route_lookup_v6(&inire->ire_addr_v6, 0, 0, 0, 101145916cd2Sjpk NULL, &sire, zoneid, NULL, 1012f4b3ec61Sdh155122 (MATCH_IRE_RECURSIVE | MATCH_IRE_DEFAULT), ipst); 10137c478bd9Sstevel@tonic-gate } else { 10147c478bd9Sstevel@tonic-gate ASSERT(inire->ire_ipversion == IPV4_VERSION); 10157c478bd9Sstevel@tonic-gate ire = ire_route_lookup(inire->ire_addr, 0, 0, 0, 101645916cd2Sjpk NULL, &sire, zoneid, NULL, 1017f4b3ec61Sdh155122 (MATCH_IRE_RECURSIVE | MATCH_IRE_DEFAULT), ipst); 10187c478bd9Sstevel@tonic-gate } 10197c478bd9Sstevel@tonic-gate 10207c478bd9Sstevel@tonic-gate /* 10217c478bd9Sstevel@tonic-gate * We prevent returning IRES with source address INADDR_ANY 10227c478bd9Sstevel@tonic-gate * as these were temporarily created for sending packets 10237c478bd9Sstevel@tonic-gate * from endpoints that have conn_unspec_src set. 10247c478bd9Sstevel@tonic-gate */ 10257c478bd9Sstevel@tonic-gate if (ire == NULL || 10267c478bd9Sstevel@tonic-gate (ire->ire_ipversion == IPV4_VERSION && 10277c478bd9Sstevel@tonic-gate ire->ire_src_addr == INADDR_ANY) || 10287c478bd9Sstevel@tonic-gate (ire->ire_ipversion == IPV6_VERSION && 10297c478bd9Sstevel@tonic-gate IN6_IS_ADDR_UNSPECIFIED(&ire->ire_src_addr_v6))) { 10307c478bd9Sstevel@tonic-gate inire->ire_type = 0; 10317c478bd9Sstevel@tonic-gate } else { 10327c478bd9Sstevel@tonic-gate bcopy(ire, inire, sizeof (ire_t)); 10337c478bd9Sstevel@tonic-gate /* Copy the route metrics from the parent. */ 10347c478bd9Sstevel@tonic-gate if (sire != NULL) { 10357c478bd9Sstevel@tonic-gate bcopy(&(sire->ire_uinfo), &(inire->ire_uinfo), 10367c478bd9Sstevel@tonic-gate sizeof (iulp_t)); 10377c478bd9Sstevel@tonic-gate } 10387c478bd9Sstevel@tonic-gate 10397c478bd9Sstevel@tonic-gate /* 10407c478bd9Sstevel@tonic-gate * As we don't lookup global policy here, we may not 10417c478bd9Sstevel@tonic-gate * pass the right size if per-socket policy is not 10427c478bd9Sstevel@tonic-gate * present. For these cases, path mtu discovery will 10437c478bd9Sstevel@tonic-gate * do the right thing. 10447c478bd9Sstevel@tonic-gate */ 10457c478bd9Sstevel@tonic-gate inire->ire_ipsec_overhead = conn_ipsec_length(Q_TO_CONN(q)); 10467c478bd9Sstevel@tonic-gate 10477c478bd9Sstevel@tonic-gate /* Pass the latest setting of the ip_path_mtu_discovery */ 1048f4b3ec61Sdh155122 inire->ire_frag_flag |= 1049f4b3ec61Sdh155122 (ipst->ips_ip_path_mtu_discovery) ? IPH_DF : 0; 10507c478bd9Sstevel@tonic-gate } 10517c478bd9Sstevel@tonic-gate if (ire != NULL) 10527c478bd9Sstevel@tonic-gate ire_refrele(ire); 10537c478bd9Sstevel@tonic-gate if (sire != NULL) 10547c478bd9Sstevel@tonic-gate ire_refrele(sire); 10557c478bd9Sstevel@tonic-gate mp->b_wptr = &mp->b_rptr[sizeof (ire_t)]; 10567c478bd9Sstevel@tonic-gate mp->b_datap->db_type = IRE_DB_TYPE; 10577c478bd9Sstevel@tonic-gate 10587c478bd9Sstevel@tonic-gate /* Put the IRE_DB_TYPE mblk last in the chain */ 10597c478bd9Sstevel@tonic-gate mp1 = mp->b_cont; 10607c478bd9Sstevel@tonic-gate if (mp1 != NULL) { 10617c478bd9Sstevel@tonic-gate mp->b_cont = NULL; 10627c478bd9Sstevel@tonic-gate linkb(mp1, mp); 10637c478bd9Sstevel@tonic-gate mp = mp1; 10647c478bd9Sstevel@tonic-gate } 10657c478bd9Sstevel@tonic-gate qreply(q, mp); 10667c478bd9Sstevel@tonic-gate } 10677c478bd9Sstevel@tonic-gate 10687c478bd9Sstevel@tonic-gate /* 10697c478bd9Sstevel@tonic-gate * Send a packet using the specified IRE. 10707c478bd9Sstevel@tonic-gate * If ire_src_addr_v6 is all zero then discard the IRE after 10717c478bd9Sstevel@tonic-gate * the packet has been sent. 10727c478bd9Sstevel@tonic-gate */ 10737c478bd9Sstevel@tonic-gate static void 10747c478bd9Sstevel@tonic-gate ire_send(queue_t *q, mblk_t *pkt, ire_t *ire) 10757c478bd9Sstevel@tonic-gate { 10767c478bd9Sstevel@tonic-gate mblk_t *ipsec_mp; 10777c478bd9Sstevel@tonic-gate boolean_t is_secure; 10787c478bd9Sstevel@tonic-gate uint_t ifindex; 10797c478bd9Sstevel@tonic-gate ill_t *ill; 10805597b60aSnordmark zoneid_t zoneid = ire->ire_zoneid; 1081f4b3ec61Sdh155122 ip_stack_t *ipst = ire->ire_ipst; 10827c478bd9Sstevel@tonic-gate 10837c478bd9Sstevel@tonic-gate ASSERT(ire->ire_ipversion == IPV4_VERSION); 10845597b60aSnordmark ASSERT(!(ire->ire_type & IRE_LOCAL)); /* Has different ire_zoneid */ 10857c478bd9Sstevel@tonic-gate ipsec_mp = pkt; 10867c478bd9Sstevel@tonic-gate is_secure = (pkt->b_datap->db_type == M_CTL); 10875597b60aSnordmark if (is_secure) { 10885597b60aSnordmark ipsec_out_t *io; 10895597b60aSnordmark 10907c478bd9Sstevel@tonic-gate pkt = pkt->b_cont; 10915597b60aSnordmark io = (ipsec_out_t *)ipsec_mp->b_rptr; 10925597b60aSnordmark if (io->ipsec_out_type == IPSEC_OUT) 10935597b60aSnordmark zoneid = io->ipsec_out_zoneid; 10945597b60aSnordmark } 10957c478bd9Sstevel@tonic-gate 10967c478bd9Sstevel@tonic-gate /* If the packet originated externally then */ 10977c478bd9Sstevel@tonic-gate if (pkt->b_prev) { 10987c478bd9Sstevel@tonic-gate ire_refrele(ire); 10997c478bd9Sstevel@tonic-gate /* 11007c478bd9Sstevel@tonic-gate * Extract the ifindex from b_prev (set in ip_rput_noire). 11017c478bd9Sstevel@tonic-gate * Look up interface to see if it still exists (it could have 11027c478bd9Sstevel@tonic-gate * been unplumbed by the time the reply came back from ARP) 11037c478bd9Sstevel@tonic-gate */ 11047c478bd9Sstevel@tonic-gate ifindex = (uint_t)(uintptr_t)pkt->b_prev; 11057c478bd9Sstevel@tonic-gate ill = ill_lookup_on_ifindex(ifindex, B_FALSE, 1106f4b3ec61Sdh155122 NULL, NULL, NULL, NULL, ipst); 11077c478bd9Sstevel@tonic-gate if (ill == NULL) { 11087c478bd9Sstevel@tonic-gate pkt->b_prev = NULL; 11097c478bd9Sstevel@tonic-gate pkt->b_next = NULL; 11107c478bd9Sstevel@tonic-gate freemsg(ipsec_mp); 11117c478bd9Sstevel@tonic-gate return; 11127c478bd9Sstevel@tonic-gate } 11137c478bd9Sstevel@tonic-gate q = ill->ill_rq; 11147c478bd9Sstevel@tonic-gate pkt->b_prev = NULL; 11157c478bd9Sstevel@tonic-gate /* 11167c478bd9Sstevel@tonic-gate * This packet has not gone through IPSEC processing 11177c478bd9Sstevel@tonic-gate * and hence we should not have any IPSEC message 11187c478bd9Sstevel@tonic-gate * prepended. 11197c478bd9Sstevel@tonic-gate */ 11207c478bd9Sstevel@tonic-gate ASSERT(ipsec_mp == pkt); 1121c793af95Ssangeeta put(q, pkt); 11227c478bd9Sstevel@tonic-gate ill_refrele(ill); 11237c478bd9Sstevel@tonic-gate } else if (pkt->b_next) { 11247c478bd9Sstevel@tonic-gate /* Packets from multicast router */ 11257c478bd9Sstevel@tonic-gate pkt->b_next = NULL; 11267c478bd9Sstevel@tonic-gate /* 11277c478bd9Sstevel@tonic-gate * We never get the IPSEC_OUT while forwarding the 11287c478bd9Sstevel@tonic-gate * packet for multicast router. 11297c478bd9Sstevel@tonic-gate */ 11307c478bd9Sstevel@tonic-gate ASSERT(ipsec_mp == pkt); 11317c478bd9Sstevel@tonic-gate ip_rput_forward(ire, (ipha_t *)pkt->b_rptr, ipsec_mp, NULL); 11327c478bd9Sstevel@tonic-gate ire_refrele(ire); 11337c478bd9Sstevel@tonic-gate } else { 11347c478bd9Sstevel@tonic-gate /* Locally originated packets */ 11357c478bd9Sstevel@tonic-gate boolean_t is_inaddr_any; 11367c478bd9Sstevel@tonic-gate ipha_t *ipha = (ipha_t *)pkt->b_rptr; 11377c478bd9Sstevel@tonic-gate 11387c478bd9Sstevel@tonic-gate /* 11397c478bd9Sstevel@tonic-gate * We need to do an ire_delete below for which 11407c478bd9Sstevel@tonic-gate * we need to make sure that the IRE will be 11417c478bd9Sstevel@tonic-gate * around even after calling ip_wput_ire - 11427c478bd9Sstevel@tonic-gate * which does ire_refrele. Otherwise somebody 11437c478bd9Sstevel@tonic-gate * could potentially delete this ire and hence 11447c478bd9Sstevel@tonic-gate * free this ire and we will be calling ire_delete 11457c478bd9Sstevel@tonic-gate * on a freed ire below. 11467c478bd9Sstevel@tonic-gate */ 11477c478bd9Sstevel@tonic-gate is_inaddr_any = (ire->ire_src_addr == INADDR_ANY); 11487c478bd9Sstevel@tonic-gate if (is_inaddr_any) { 11497c478bd9Sstevel@tonic-gate IRE_REFHOLD(ire); 11507c478bd9Sstevel@tonic-gate } 11517c478bd9Sstevel@tonic-gate /* 11527c478bd9Sstevel@tonic-gate * If we were resolving a router we can not use the 11537c478bd9Sstevel@tonic-gate * routers IRE for sending the packet (since it would 11547c478bd9Sstevel@tonic-gate * violate the uniqness of the IP idents) thus we 11557c478bd9Sstevel@tonic-gate * make another pass through ip_wput to create the IRE_CACHE 11567c478bd9Sstevel@tonic-gate * for the destination. 11577c478bd9Sstevel@tonic-gate * When IRE_MARK_NOADD is set, ire_add() is not called. 11587c478bd9Sstevel@tonic-gate * Thus ip_wput() will never find a ire and result in an 11597c478bd9Sstevel@tonic-gate * infinite loop. Thus we check whether IRE_MARK_NOADD is 11607c478bd9Sstevel@tonic-gate * is set. This also implies that IRE_MARK_NOADD can only be 11617c478bd9Sstevel@tonic-gate * used to send packets to directly connected hosts. 11627c478bd9Sstevel@tonic-gate */ 11637c478bd9Sstevel@tonic-gate if (ipha->ipha_dst != ire->ire_addr && 11647c478bd9Sstevel@tonic-gate !(ire->ire_marks & IRE_MARK_NOADD)) { 11657c478bd9Sstevel@tonic-gate ire_refrele(ire); /* Held in ire_add */ 11665597b60aSnordmark if (CONN_Q(q)) { 11675597b60aSnordmark (void) ip_output(Q_TO_CONN(q), ipsec_mp, q, 11685597b60aSnordmark IRE_SEND); 11695597b60aSnordmark } else { 11705597b60aSnordmark (void) ip_output((void *)(uintptr_t)zoneid, 11715597b60aSnordmark ipsec_mp, q, IRE_SEND); 11725597b60aSnordmark } 11737c478bd9Sstevel@tonic-gate } else { 11747c478bd9Sstevel@tonic-gate if (is_secure) { 11757c478bd9Sstevel@tonic-gate ipsec_out_t *oi; 11767c478bd9Sstevel@tonic-gate ipha_t *ipha; 11777c478bd9Sstevel@tonic-gate 11787c478bd9Sstevel@tonic-gate oi = (ipsec_out_t *)ipsec_mp->b_rptr; 11797c478bd9Sstevel@tonic-gate ipha = (ipha_t *)ipsec_mp->b_cont->b_rptr; 11807c478bd9Sstevel@tonic-gate if (oi->ipsec_out_proc_begin) { 11817c478bd9Sstevel@tonic-gate /* 11827c478bd9Sstevel@tonic-gate * This is the case where 11837c478bd9Sstevel@tonic-gate * ip_wput_ipsec_out could not find 11847c478bd9Sstevel@tonic-gate * the IRE and recreated a new one. 11857c478bd9Sstevel@tonic-gate * As ip_wput_ipsec_out does ire 11867c478bd9Sstevel@tonic-gate * lookups, ire_refrele for the extra 11877c478bd9Sstevel@tonic-gate * bump in ire_add. 11887c478bd9Sstevel@tonic-gate */ 11897c478bd9Sstevel@tonic-gate ire_refrele(ire); 11907c478bd9Sstevel@tonic-gate ip_wput_ipsec_out(q, ipsec_mp, ipha, 11917c478bd9Sstevel@tonic-gate NULL, NULL); 11927c478bd9Sstevel@tonic-gate } else { 11937c478bd9Sstevel@tonic-gate /* 11947c478bd9Sstevel@tonic-gate * IRE_REFRELE will be done in 11957c478bd9Sstevel@tonic-gate * ip_wput_ire. 11967c478bd9Sstevel@tonic-gate */ 11977c478bd9Sstevel@tonic-gate ip_wput_ire(q, ipsec_mp, ire, NULL, 11985597b60aSnordmark IRE_SEND, zoneid); 11997c478bd9Sstevel@tonic-gate } 12007c478bd9Sstevel@tonic-gate } else { 12017c478bd9Sstevel@tonic-gate /* 12027c478bd9Sstevel@tonic-gate * IRE_REFRELE will be done in ip_wput_ire. 12037c478bd9Sstevel@tonic-gate */ 12047c478bd9Sstevel@tonic-gate ip_wput_ire(q, ipsec_mp, ire, NULL, 12055597b60aSnordmark IRE_SEND, zoneid); 12067c478bd9Sstevel@tonic-gate } 12077c478bd9Sstevel@tonic-gate } 12087c478bd9Sstevel@tonic-gate /* 12097c478bd9Sstevel@tonic-gate * Special code to support sending a single packet with 12107c478bd9Sstevel@tonic-gate * conn_unspec_src using an IRE which has no source address. 12117c478bd9Sstevel@tonic-gate * The IRE is deleted here after sending the packet to avoid 12127c478bd9Sstevel@tonic-gate * having other code trip on it. But before we delete the 12137c478bd9Sstevel@tonic-gate * ire, somebody could have looked up this ire. 12147c478bd9Sstevel@tonic-gate * We prevent returning/using this IRE by the upper layers 12157c478bd9Sstevel@tonic-gate * by making checks to NULL source address in other places 12167c478bd9Sstevel@tonic-gate * like e.g ip_ire_append, ip_ire_req and ip_bind_connected. 12177c478bd9Sstevel@tonic-gate * Though, this does not completely prevent other threads 12187c478bd9Sstevel@tonic-gate * from using this ire, this should not cause any problems. 12197c478bd9Sstevel@tonic-gate * 12207c478bd9Sstevel@tonic-gate * NOTE : We use is_inaddr_any instead of using ire_src_addr 12217c478bd9Sstevel@tonic-gate * because for the normal case i.e !is_inaddr_any, ire_refrele 12227c478bd9Sstevel@tonic-gate * above could have potentially freed the ire. 12237c478bd9Sstevel@tonic-gate */ 12247c478bd9Sstevel@tonic-gate if (is_inaddr_any) { 12257c478bd9Sstevel@tonic-gate /* 12267c478bd9Sstevel@tonic-gate * If this IRE has been deleted by another thread, then 12277c478bd9Sstevel@tonic-gate * ire_bucket won't be NULL, but ire_ptpn will be NULL. 12287c478bd9Sstevel@tonic-gate * Thus, ire_delete will do nothing. This check 12297c478bd9Sstevel@tonic-gate * guards against calling ire_delete when the IRE was 12307c478bd9Sstevel@tonic-gate * never inserted in the table, which is handled by 12317c478bd9Sstevel@tonic-gate * ire_delete as dropping another reference. 12327c478bd9Sstevel@tonic-gate */ 12337c478bd9Sstevel@tonic-gate if (ire->ire_bucket != NULL) { 12347c478bd9Sstevel@tonic-gate ip1dbg(("ire_send: delete IRE\n")); 12357c478bd9Sstevel@tonic-gate ire_delete(ire); 12367c478bd9Sstevel@tonic-gate } 12377c478bd9Sstevel@tonic-gate ire_refrele(ire); /* Held above */ 12387c478bd9Sstevel@tonic-gate } 12397c478bd9Sstevel@tonic-gate } 12407c478bd9Sstevel@tonic-gate } 12417c478bd9Sstevel@tonic-gate 12427c478bd9Sstevel@tonic-gate /* 12437c478bd9Sstevel@tonic-gate * Send a packet using the specified IRE. 12447c478bd9Sstevel@tonic-gate * If ire_src_addr_v6 is all zero then discard the IRE after 12457c478bd9Sstevel@tonic-gate * the packet has been sent. 12467c478bd9Sstevel@tonic-gate */ 12477c478bd9Sstevel@tonic-gate static void 12487c478bd9Sstevel@tonic-gate ire_send_v6(queue_t *q, mblk_t *pkt, ire_t *ire) 12497c478bd9Sstevel@tonic-gate { 12507c478bd9Sstevel@tonic-gate mblk_t *ipsec_mp; 12517c478bd9Sstevel@tonic-gate boolean_t secure; 12527c478bd9Sstevel@tonic-gate uint_t ifindex; 12535597b60aSnordmark zoneid_t zoneid = ire->ire_zoneid; 1254f4b3ec61Sdh155122 ip_stack_t *ipst = ire->ire_ipst; 12557c478bd9Sstevel@tonic-gate 12567c478bd9Sstevel@tonic-gate ASSERT(ire->ire_ipversion == IPV6_VERSION); 12575597b60aSnordmark ASSERT(!(ire->ire_type & IRE_LOCAL)); /* Has different ire_zoneid */ 12587c478bd9Sstevel@tonic-gate if (pkt->b_datap->db_type == M_CTL) { 12595597b60aSnordmark ipsec_out_t *io; 12605597b60aSnordmark 12617c478bd9Sstevel@tonic-gate ipsec_mp = pkt; 12627c478bd9Sstevel@tonic-gate pkt = pkt->b_cont; 12637c478bd9Sstevel@tonic-gate secure = B_TRUE; 12645597b60aSnordmark io = (ipsec_out_t *)ipsec_mp->b_rptr; 12655597b60aSnordmark if (io->ipsec_out_type == IPSEC_OUT) 12665597b60aSnordmark zoneid = io->ipsec_out_zoneid; 12677c478bd9Sstevel@tonic-gate } else { 12687c478bd9Sstevel@tonic-gate ipsec_mp = pkt; 12697c478bd9Sstevel@tonic-gate secure = B_FALSE; 12707c478bd9Sstevel@tonic-gate } 12717c478bd9Sstevel@tonic-gate 12727c478bd9Sstevel@tonic-gate /* If the packet originated externally then */ 12737c478bd9Sstevel@tonic-gate if (pkt->b_prev) { 12747c478bd9Sstevel@tonic-gate ill_t *ill; 12757c478bd9Sstevel@tonic-gate /* 12767c478bd9Sstevel@tonic-gate * Extract the ifindex from b_prev (set in ip_rput_data_v6). 12777c478bd9Sstevel@tonic-gate * Look up interface to see if it still exists (it could have 12787c478bd9Sstevel@tonic-gate * been unplumbed by the time the reply came back from the 1279c793af95Ssangeeta * resolver). 12807c478bd9Sstevel@tonic-gate */ 12817c478bd9Sstevel@tonic-gate ifindex = (uint_t)(uintptr_t)pkt->b_prev; 12827c478bd9Sstevel@tonic-gate ill = ill_lookup_on_ifindex(ifindex, B_TRUE, 1283f4b3ec61Sdh155122 NULL, NULL, NULL, NULL, ipst); 12847c478bd9Sstevel@tonic-gate if (ill == NULL) { 12857c478bd9Sstevel@tonic-gate pkt->b_prev = NULL; 12867c478bd9Sstevel@tonic-gate pkt->b_next = NULL; 12877c478bd9Sstevel@tonic-gate freemsg(ipsec_mp); 12887c478bd9Sstevel@tonic-gate ire_refrele(ire); /* Held in ire_add */ 12897c478bd9Sstevel@tonic-gate return; 12907c478bd9Sstevel@tonic-gate } 12917c478bd9Sstevel@tonic-gate q = ill->ill_rq; 12927c478bd9Sstevel@tonic-gate pkt->b_prev = NULL; 12937c478bd9Sstevel@tonic-gate /* 12947c478bd9Sstevel@tonic-gate * This packet has not gone through IPSEC processing 12957c478bd9Sstevel@tonic-gate * and hence we should not have any IPSEC message 12967c478bd9Sstevel@tonic-gate * prepended. 12977c478bd9Sstevel@tonic-gate */ 12987c478bd9Sstevel@tonic-gate ASSERT(ipsec_mp == pkt); 12997c478bd9Sstevel@tonic-gate put(q, pkt); 13007c478bd9Sstevel@tonic-gate ill_refrele(ill); 13017c478bd9Sstevel@tonic-gate } else if (pkt->b_next) { 13027c478bd9Sstevel@tonic-gate /* Packets from multicast router */ 13037c478bd9Sstevel@tonic-gate pkt->b_next = NULL; 13047c478bd9Sstevel@tonic-gate /* 13057c478bd9Sstevel@tonic-gate * We never get the IPSEC_OUT while forwarding the 13067c478bd9Sstevel@tonic-gate * packet for multicast router. 13077c478bd9Sstevel@tonic-gate */ 13087c478bd9Sstevel@tonic-gate ASSERT(ipsec_mp == pkt); 13097c478bd9Sstevel@tonic-gate /* 13107c478bd9Sstevel@tonic-gate * XXX TODO IPv6. 13117c478bd9Sstevel@tonic-gate */ 13127c478bd9Sstevel@tonic-gate freemsg(pkt); 13137c478bd9Sstevel@tonic-gate #ifdef XXX 13147c478bd9Sstevel@tonic-gate ip_rput_forward(ire, (ipha_t *)pkt->b_rptr, pkt, NULL); 13157c478bd9Sstevel@tonic-gate #endif 13167c478bd9Sstevel@tonic-gate } else { 13177c478bd9Sstevel@tonic-gate if (secure) { 13187c478bd9Sstevel@tonic-gate ipsec_out_t *oi; 13197c478bd9Sstevel@tonic-gate ip6_t *ip6h; 13207c478bd9Sstevel@tonic-gate 13217c478bd9Sstevel@tonic-gate oi = (ipsec_out_t *)ipsec_mp->b_rptr; 13227c478bd9Sstevel@tonic-gate ip6h = (ip6_t *)ipsec_mp->b_cont->b_rptr; 13237c478bd9Sstevel@tonic-gate if (oi->ipsec_out_proc_begin) { 13247c478bd9Sstevel@tonic-gate /* 13257c478bd9Sstevel@tonic-gate * This is the case where 13267c478bd9Sstevel@tonic-gate * ip_wput_ipsec_out could not find 13277c478bd9Sstevel@tonic-gate * the IRE and recreated a new one. 13287c478bd9Sstevel@tonic-gate */ 13297c478bd9Sstevel@tonic-gate ip_wput_ipsec_out_v6(q, ipsec_mp, ip6h, 13307c478bd9Sstevel@tonic-gate NULL, NULL); 13317c478bd9Sstevel@tonic-gate } else { 13325597b60aSnordmark if (CONN_Q(q)) { 13335597b60aSnordmark (void) ip_output_v6(Q_TO_CONN(q), 13345597b60aSnordmark ipsec_mp, q, IRE_SEND); 13355597b60aSnordmark } else { 13365597b60aSnordmark (void) ip_output_v6( 13375597b60aSnordmark (void *)(uintptr_t)zoneid, 13385597b60aSnordmark ipsec_mp, q, IRE_SEND); 13395597b60aSnordmark } 13407c478bd9Sstevel@tonic-gate } 13417c478bd9Sstevel@tonic-gate } else { 13427c478bd9Sstevel@tonic-gate /* 13437c478bd9Sstevel@tonic-gate * Send packets through ip_output_v6 so that any 13447c478bd9Sstevel@tonic-gate * ip6_info header can be processed again. 13457c478bd9Sstevel@tonic-gate */ 13465597b60aSnordmark if (CONN_Q(q)) { 13477c478bd9Sstevel@tonic-gate (void) ip_output_v6(Q_TO_CONN(q), ipsec_mp, q, 13487c478bd9Sstevel@tonic-gate IRE_SEND); 13495597b60aSnordmark } else { 13505597b60aSnordmark (void) ip_output_v6((void *)(uintptr_t)zoneid, 13515597b60aSnordmark ipsec_mp, q, IRE_SEND); 13525597b60aSnordmark } 13537c478bd9Sstevel@tonic-gate } 13547c478bd9Sstevel@tonic-gate /* 13557c478bd9Sstevel@tonic-gate * Special code to support sending a single packet with 13567c478bd9Sstevel@tonic-gate * conn_unspec_src using an IRE which has no source address. 13577c478bd9Sstevel@tonic-gate * The IRE is deleted here after sending the packet to avoid 13587c478bd9Sstevel@tonic-gate * having other code trip on it. But before we delete the 13597c478bd9Sstevel@tonic-gate * ire, somebody could have looked up this ire. 13607c478bd9Sstevel@tonic-gate * We prevent returning/using this IRE by the upper layers 13617c478bd9Sstevel@tonic-gate * by making checks to NULL source address in other places 13627c478bd9Sstevel@tonic-gate * like e.g ip_ire_append_v6, ip_ire_req and 13637c478bd9Sstevel@tonic-gate * ip_bind_connected_v6. Though, this does not completely 13647c478bd9Sstevel@tonic-gate * prevent other threads from using this ire, this should 13657c478bd9Sstevel@tonic-gate * not cause any problems. 13667c478bd9Sstevel@tonic-gate */ 13677c478bd9Sstevel@tonic-gate if (IN6_IS_ADDR_UNSPECIFIED(&ire->ire_src_addr_v6)) { 13687c478bd9Sstevel@tonic-gate ip1dbg(("ire_send_v6: delete IRE\n")); 13697c478bd9Sstevel@tonic-gate ire_delete(ire); 13707c478bd9Sstevel@tonic-gate } 13717c478bd9Sstevel@tonic-gate } 13727c478bd9Sstevel@tonic-gate ire_refrele(ire); /* Held in ire_add */ 13737c478bd9Sstevel@tonic-gate } 13747c478bd9Sstevel@tonic-gate 13757c478bd9Sstevel@tonic-gate /* 13767c478bd9Sstevel@tonic-gate * Make sure that IRE bucket does not get too long. 13777c478bd9Sstevel@tonic-gate * This can cause lock up because ire_cache_lookup() 13787c478bd9Sstevel@tonic-gate * may take "forever" to finish. 13797c478bd9Sstevel@tonic-gate * 13807c478bd9Sstevel@tonic-gate * We just remove cnt IREs each time. This means that 13817c478bd9Sstevel@tonic-gate * the bucket length will stay approximately constant, 13827c478bd9Sstevel@tonic-gate * depending on cnt. This should be enough to defend 13837c478bd9Sstevel@tonic-gate * against DoS attack based on creating temporary IREs 13847c478bd9Sstevel@tonic-gate * (for forwarding and non-TCP traffic). 13857c478bd9Sstevel@tonic-gate * 13867c478bd9Sstevel@tonic-gate * Note that new IRE is normally added at the tail of the 13877c478bd9Sstevel@tonic-gate * bucket. This means that we are removing the "oldest" 13887c478bd9Sstevel@tonic-gate * temporary IRE added. Only if there are IREs with 13897c478bd9Sstevel@tonic-gate * the same ire_addr, do we not add it at the tail. Refer 13907c478bd9Sstevel@tonic-gate * to ire_add_v*(). It should be OK for our purpose. 13917c478bd9Sstevel@tonic-gate * 13927c478bd9Sstevel@tonic-gate * For non-temporary cached IREs, we make sure that they 13937c478bd9Sstevel@tonic-gate * have not been used for some time (defined below), they 13947c478bd9Sstevel@tonic-gate * are non-local destinations, and there is no one using 13957c478bd9Sstevel@tonic-gate * them at the moment (refcnt == 1). 13967c478bd9Sstevel@tonic-gate * 13977c478bd9Sstevel@tonic-gate * The above means that the IRE bucket length may become 13987c478bd9Sstevel@tonic-gate * very long, consisting of mostly non-temporary IREs. 13997c478bd9Sstevel@tonic-gate * This can happen when the hash function does a bad job 14007c478bd9Sstevel@tonic-gate * so that most TCP connections cluster to a specific bucket. 14017c478bd9Sstevel@tonic-gate * This "hopefully" should never happen. It can also 14027c478bd9Sstevel@tonic-gate * happen if most TCP connections have very long lives. 14037c478bd9Sstevel@tonic-gate * Even with the minimal hash table size of 256, there 14047c478bd9Sstevel@tonic-gate * has to be a lot of such connections to make the bucket 14057c478bd9Sstevel@tonic-gate * length unreasonably long. This should probably not 14067c478bd9Sstevel@tonic-gate * happen either. The third can when this can happen is 14077c478bd9Sstevel@tonic-gate * when the machine is under attack, such as SYN flooding. 14087c478bd9Sstevel@tonic-gate * TCP should already have the proper mechanism to protect 14097c478bd9Sstevel@tonic-gate * that. So we should be safe. 14107c478bd9Sstevel@tonic-gate * 14117c478bd9Sstevel@tonic-gate * This function is called by ire_add_then_send() after 14127c478bd9Sstevel@tonic-gate * a new IRE is added and the packet is sent. 14137c478bd9Sstevel@tonic-gate * 14147c478bd9Sstevel@tonic-gate * The idle cutoff interval is set to 60s. It can be 14157c478bd9Sstevel@tonic-gate * changed using /etc/system. 14167c478bd9Sstevel@tonic-gate */ 14177c478bd9Sstevel@tonic-gate uint32_t ire_idle_cutoff_interval = 60000; 14187c478bd9Sstevel@tonic-gate 14197c478bd9Sstevel@tonic-gate static void 14207c478bd9Sstevel@tonic-gate ire_cache_cleanup(irb_t *irb, uint32_t threshold, int cnt) 14217c478bd9Sstevel@tonic-gate { 14227c478bd9Sstevel@tonic-gate ire_t *ire; 14237c478bd9Sstevel@tonic-gate int tmp_cnt = cnt; 14247c478bd9Sstevel@tonic-gate clock_t cut_off = drv_usectohz(ire_idle_cutoff_interval * 1000); 14257c478bd9Sstevel@tonic-gate 14267c478bd9Sstevel@tonic-gate /* 14277c478bd9Sstevel@tonic-gate * irb is NULL if the IRE is not added to the hash. This 14287c478bd9Sstevel@tonic-gate * happens when IRE_MARK_NOADD is set in ire_add_then_send() 14297c478bd9Sstevel@tonic-gate * and when ires are returned from ire_update_srcif_v4() routine. 14307c478bd9Sstevel@tonic-gate */ 14317c478bd9Sstevel@tonic-gate if (irb == NULL) 14327c478bd9Sstevel@tonic-gate return; 14337c478bd9Sstevel@tonic-gate 14347c478bd9Sstevel@tonic-gate IRB_REFHOLD(irb); 14357c478bd9Sstevel@tonic-gate if (irb->irb_tmp_ire_cnt > threshold) { 14367c478bd9Sstevel@tonic-gate for (ire = irb->irb_ire; ire != NULL && tmp_cnt > 0; 14377c478bd9Sstevel@tonic-gate ire = ire->ire_next) { 14387c478bd9Sstevel@tonic-gate if (ire->ire_marks & IRE_MARK_CONDEMNED) 14397c478bd9Sstevel@tonic-gate continue; 14407c478bd9Sstevel@tonic-gate if (ire->ire_marks & IRE_MARK_TEMPORARY) { 14417c478bd9Sstevel@tonic-gate ASSERT(ire->ire_type == IRE_CACHE); 14427c478bd9Sstevel@tonic-gate ire_delete(ire); 14437c478bd9Sstevel@tonic-gate tmp_cnt--; 14447c478bd9Sstevel@tonic-gate } 14457c478bd9Sstevel@tonic-gate } 14467c478bd9Sstevel@tonic-gate } 14477c478bd9Sstevel@tonic-gate if (irb->irb_ire_cnt - irb->irb_tmp_ire_cnt > threshold) { 14487c478bd9Sstevel@tonic-gate for (ire = irb->irb_ire; ire != NULL && cnt > 0; 14497c478bd9Sstevel@tonic-gate ire = ire->ire_next) { 1450f4b3ec61Sdh155122 if (ire->ire_marks & IRE_MARK_CONDEMNED) 1451f4b3ec61Sdh155122 continue; 1452f4b3ec61Sdh155122 if (ire->ire_ipversion == IPV4_VERSION) { 1453f4b3ec61Sdh155122 if (ire->ire_gateway_addr == 0) 1454f4b3ec61Sdh155122 continue; 1455f4b3ec61Sdh155122 } else { 1456f4b3ec61Sdh155122 if (IN6_IS_ADDR_UNSPECIFIED( 1457f4b3ec61Sdh155122 &ire->ire_gateway_addr_v6)) 14587c478bd9Sstevel@tonic-gate continue; 14597c478bd9Sstevel@tonic-gate } 14607c478bd9Sstevel@tonic-gate if ((ire->ire_type == IRE_CACHE) && 14617c478bd9Sstevel@tonic-gate (lbolt - ire->ire_last_used_time > cut_off) && 14627c478bd9Sstevel@tonic-gate (ire->ire_refcnt == 1)) { 14637c478bd9Sstevel@tonic-gate ire_delete(ire); 14647c478bd9Sstevel@tonic-gate cnt--; 14657c478bd9Sstevel@tonic-gate } 14667c478bd9Sstevel@tonic-gate } 14677c478bd9Sstevel@tonic-gate } 14687c478bd9Sstevel@tonic-gate IRB_REFRELE(irb); 14697c478bd9Sstevel@tonic-gate } 14707c478bd9Sstevel@tonic-gate 14717c478bd9Sstevel@tonic-gate /* 14727c478bd9Sstevel@tonic-gate * ire_add_then_send is called when a new IRE has been created in order to 14737c478bd9Sstevel@tonic-gate * route an outgoing packet. Typically, it is called from ip_wput when 14747c478bd9Sstevel@tonic-gate * a response comes back down from a resolver. We add the IRE, and then 14757c478bd9Sstevel@tonic-gate * possibly run the packet through ip_wput or ip_rput, as appropriate. 14767c478bd9Sstevel@tonic-gate * However, we do not add the newly created IRE in the cache when 14777c478bd9Sstevel@tonic-gate * IRE_MARK_NOADD is set in the IRE. IRE_MARK_NOADD is set at 14787c478bd9Sstevel@tonic-gate * ip_newroute_ipif(). The ires with IRE_MARK_NOADD and ires returned 14797c478bd9Sstevel@tonic-gate * by ire_update_srcif_v4() are ire_refrele'd by ip_wput_ire() and get 14807c478bd9Sstevel@tonic-gate * deleted. 14817c478bd9Sstevel@tonic-gate * Multirouting support: the packet is silently discarded when the new IRE 14827c478bd9Sstevel@tonic-gate * holds the RTF_MULTIRT flag, but is not the first IRE to be added with the 14837c478bd9Sstevel@tonic-gate * RTF_MULTIRT flag for the same destination address. 14847c478bd9Sstevel@tonic-gate * In this case, we just want to register this additional ire without 14857c478bd9Sstevel@tonic-gate * sending the packet, as it has already been replicated through 14867c478bd9Sstevel@tonic-gate * existing multirt routes in ip_wput(). 14877c478bd9Sstevel@tonic-gate */ 14887c478bd9Sstevel@tonic-gate void 14897c478bd9Sstevel@tonic-gate ire_add_then_send(queue_t *q, ire_t *ire, mblk_t *mp) 14907c478bd9Sstevel@tonic-gate { 14917c478bd9Sstevel@tonic-gate irb_t *irb; 14927c478bd9Sstevel@tonic-gate boolean_t drop = B_FALSE; 14937c478bd9Sstevel@tonic-gate /* LINTED : set but not used in function */ 14947c478bd9Sstevel@tonic-gate boolean_t mctl_present; 14957c478bd9Sstevel@tonic-gate mblk_t *first_mp = NULL; 14967c478bd9Sstevel@tonic-gate mblk_t *save_mp = NULL; 14977c478bd9Sstevel@tonic-gate ire_t *dst_ire; 14987c478bd9Sstevel@tonic-gate ipha_t *ipha; 14997c478bd9Sstevel@tonic-gate ip6_t *ip6h; 1500f4b3ec61Sdh155122 ip_stack_t *ipst = ire->ire_ipst; 15017c478bd9Sstevel@tonic-gate 15027c478bd9Sstevel@tonic-gate if (mp != NULL) { 15037c478bd9Sstevel@tonic-gate /* 15047c478bd9Sstevel@tonic-gate * We first have to retrieve the destination address carried 15057c478bd9Sstevel@tonic-gate * by the packet. 15067c478bd9Sstevel@tonic-gate * We can't rely on ire as it can be related to a gateway. 15077c478bd9Sstevel@tonic-gate * The destination address will help in determining if 15087c478bd9Sstevel@tonic-gate * other RTF_MULTIRT ires are already registered. 15097c478bd9Sstevel@tonic-gate * 15107c478bd9Sstevel@tonic-gate * We first need to know where we are going : v4 or V6. 15117c478bd9Sstevel@tonic-gate * the ire version is enough, as there is no risk that 15127c478bd9Sstevel@tonic-gate * we resolve an IPv6 address with an IPv4 ire 15137c478bd9Sstevel@tonic-gate * or vice versa. 15147c478bd9Sstevel@tonic-gate */ 15157c478bd9Sstevel@tonic-gate if (ire->ire_ipversion == IPV4_VERSION) { 15167c478bd9Sstevel@tonic-gate EXTRACT_PKT_MP(mp, first_mp, mctl_present); 15177c478bd9Sstevel@tonic-gate ipha = (ipha_t *)mp->b_rptr; 15187c478bd9Sstevel@tonic-gate save_mp = mp; 15197c478bd9Sstevel@tonic-gate mp = first_mp; 15207c478bd9Sstevel@tonic-gate 15217c478bd9Sstevel@tonic-gate dst_ire = ire_cache_lookup(ipha->ipha_dst, 1522f4b3ec61Sdh155122 ire->ire_zoneid, MBLK_GETLABEL(mp), ipst); 15237c478bd9Sstevel@tonic-gate } else { 1524c793af95Ssangeeta ASSERT(ire->ire_ipversion == IPV6_VERSION); 15257c478bd9Sstevel@tonic-gate /* 15267c478bd9Sstevel@tonic-gate * Get a pointer to the beginning of the IPv6 header. 15277c478bd9Sstevel@tonic-gate * Ignore leading IPsec control mblks. 15287c478bd9Sstevel@tonic-gate */ 15297c478bd9Sstevel@tonic-gate first_mp = mp; 15307c478bd9Sstevel@tonic-gate if (mp->b_datap->db_type == M_CTL) { 15317c478bd9Sstevel@tonic-gate mp = mp->b_cont; 15327c478bd9Sstevel@tonic-gate } 15337c478bd9Sstevel@tonic-gate ip6h = (ip6_t *)mp->b_rptr; 15347c478bd9Sstevel@tonic-gate save_mp = mp; 15357c478bd9Sstevel@tonic-gate mp = first_mp; 15367c478bd9Sstevel@tonic-gate dst_ire = ire_cache_lookup_v6(&ip6h->ip6_dst, 1537f4b3ec61Sdh155122 ire->ire_zoneid, MBLK_GETLABEL(mp), ipst); 15387c478bd9Sstevel@tonic-gate } 15397c478bd9Sstevel@tonic-gate if (dst_ire != NULL) { 15407c478bd9Sstevel@tonic-gate if (dst_ire->ire_flags & RTF_MULTIRT) { 15417c478bd9Sstevel@tonic-gate /* 15427c478bd9Sstevel@tonic-gate * At least one resolved multirt route 15437c478bd9Sstevel@tonic-gate * already exists for the destination, 15447c478bd9Sstevel@tonic-gate * don't sent this packet: either drop it 15457c478bd9Sstevel@tonic-gate * or complete the pending resolution, 15467c478bd9Sstevel@tonic-gate * depending on the ire. 15477c478bd9Sstevel@tonic-gate */ 15487c478bd9Sstevel@tonic-gate drop = B_TRUE; 15497c478bd9Sstevel@tonic-gate } 15507c478bd9Sstevel@tonic-gate ip1dbg(("ire_add_then_send: dst_ire %p " 15517c478bd9Sstevel@tonic-gate "[dst %08x, gw %08x], drop %d\n", 15527c478bd9Sstevel@tonic-gate (void *)dst_ire, 15537c478bd9Sstevel@tonic-gate (dst_ire->ire_ipversion == IPV4_VERSION) ? \ 15547c478bd9Sstevel@tonic-gate ntohl(dst_ire->ire_addr) : \ 15557c478bd9Sstevel@tonic-gate ntohl(V4_PART_OF_V6(dst_ire->ire_addr_v6)), 15567c478bd9Sstevel@tonic-gate (dst_ire->ire_ipversion == IPV4_VERSION) ? \ 15577c478bd9Sstevel@tonic-gate ntohl(dst_ire->ire_gateway_addr) : \ 15587c478bd9Sstevel@tonic-gate ntohl(V4_PART_OF_V6( 15597c478bd9Sstevel@tonic-gate dst_ire->ire_gateway_addr_v6)), 15607c478bd9Sstevel@tonic-gate drop)); 15617c478bd9Sstevel@tonic-gate ire_refrele(dst_ire); 15627c478bd9Sstevel@tonic-gate } 15637c478bd9Sstevel@tonic-gate } 15647c478bd9Sstevel@tonic-gate 15657c478bd9Sstevel@tonic-gate if (!(ire->ire_marks & IRE_MARK_NOADD)) { 15667c478bd9Sstevel@tonic-gate /* 15677c478bd9Sstevel@tonic-gate * Regular packets with cache bound ires and 15687c478bd9Sstevel@tonic-gate * the packets from ARP response for ires which 15697c478bd9Sstevel@tonic-gate * belong to the ire_srcif_v4 table, are here. 15707c478bd9Sstevel@tonic-gate */ 15717c478bd9Sstevel@tonic-gate if (ire->ire_in_ill == NULL) { 15727c478bd9Sstevel@tonic-gate /* Add the ire */ 1573c793af95Ssangeeta (void) ire_add(&ire, NULL, NULL, NULL, B_FALSE); 15747c478bd9Sstevel@tonic-gate } else { 15757c478bd9Sstevel@tonic-gate /* 15767c478bd9Sstevel@tonic-gate * This must be ARP response for ire in interface based 15777c478bd9Sstevel@tonic-gate * table. Note that we don't add them in cache table, 15787c478bd9Sstevel@tonic-gate * instead we update the existing table with dlureq_mp 15797c478bd9Sstevel@tonic-gate * information. The reverse tunnel ires do not come 15807c478bd9Sstevel@tonic-gate * here, as reverse tunnel is non-resolver interface. 15817c478bd9Sstevel@tonic-gate * XXX- another design alternative was to mark the 15827c478bd9Sstevel@tonic-gate * ires in interface based table with a special mark to 15837c478bd9Sstevel@tonic-gate * make absolutely sure that we operate in right ires. 15847c478bd9Sstevel@tonic-gate * This idea was not implemented as part of code review 15857c478bd9Sstevel@tonic-gate * suggestion, as ire_in_ill suffice to distinguish 15867c478bd9Sstevel@tonic-gate * between the regular ires and interface based 15877c478bd9Sstevel@tonic-gate * ires now and thus we save a bit in the ire_marks. 15887c478bd9Sstevel@tonic-gate */ 15897c478bd9Sstevel@tonic-gate ire = ire_update_srcif_v4(ire); 15907c478bd9Sstevel@tonic-gate } 15917c478bd9Sstevel@tonic-gate 15927c478bd9Sstevel@tonic-gate if (ire == NULL) { 15937c478bd9Sstevel@tonic-gate mp->b_prev = NULL; 15947c478bd9Sstevel@tonic-gate mp->b_next = NULL; 15957c478bd9Sstevel@tonic-gate MULTIRT_DEBUG_UNTAG(mp); 15967c478bd9Sstevel@tonic-gate freemsg(mp); 15977c478bd9Sstevel@tonic-gate return; 15987c478bd9Sstevel@tonic-gate } 15997c478bd9Sstevel@tonic-gate if (mp == NULL) { 16007c478bd9Sstevel@tonic-gate ire_refrele(ire); /* Held in ire_add_v4/v6 */ 16017c478bd9Sstevel@tonic-gate return; 16027c478bd9Sstevel@tonic-gate } 16037c478bd9Sstevel@tonic-gate } 16047c478bd9Sstevel@tonic-gate if (drop) { 16057c478bd9Sstevel@tonic-gate /* 16067c478bd9Sstevel@tonic-gate * If we're adding an RTF_MULTIRT ire, the resolution 16077c478bd9Sstevel@tonic-gate * is over: we just drop the packet. 16087c478bd9Sstevel@tonic-gate */ 16097c478bd9Sstevel@tonic-gate if (ire->ire_flags & RTF_MULTIRT) { 16107c478bd9Sstevel@tonic-gate if (save_mp) { 16117c478bd9Sstevel@tonic-gate save_mp->b_prev = NULL; 16127c478bd9Sstevel@tonic-gate save_mp->b_next = NULL; 16137c478bd9Sstevel@tonic-gate } 16147c478bd9Sstevel@tonic-gate MULTIRT_DEBUG_UNTAG(mp); 16157c478bd9Sstevel@tonic-gate freemsg(mp); 16167c478bd9Sstevel@tonic-gate } else { 16177c478bd9Sstevel@tonic-gate /* 16187c478bd9Sstevel@tonic-gate * Otherwise, we're adding the ire to a gateway 16197c478bd9Sstevel@tonic-gate * for a multirt route. 16207c478bd9Sstevel@tonic-gate * Invoke ip_newroute() to complete the resolution 16217c478bd9Sstevel@tonic-gate * of the route. We will then come back here and 16227c478bd9Sstevel@tonic-gate * finally drop this packet in the above code. 16237c478bd9Sstevel@tonic-gate */ 16247c478bd9Sstevel@tonic-gate if (ire->ire_ipversion == IPV4_VERSION) { 16257c478bd9Sstevel@tonic-gate /* 16267c478bd9Sstevel@tonic-gate * TODO: in order for CGTP to work in non-global 16277c478bd9Sstevel@tonic-gate * zones, ip_newroute() must create the IRE 16287c478bd9Sstevel@tonic-gate * cache in the zone indicated by 16297c478bd9Sstevel@tonic-gate * ire->ire_zoneid. 16307c478bd9Sstevel@tonic-gate */ 16317c478bd9Sstevel@tonic-gate ip_newroute(q, mp, ipha->ipha_dst, 0, 16325597b60aSnordmark (CONN_Q(q) ? Q_TO_CONN(q) : NULL), 1633f4b3ec61Sdh155122 ire->ire_zoneid, ipst); 16347c478bd9Sstevel@tonic-gate } else { 1635c793af95Ssangeeta ASSERT(ire->ire_ipversion == IPV6_VERSION); 16367c478bd9Sstevel@tonic-gate ip_newroute_v6(q, mp, &ip6h->ip6_dst, NULL, 1637f4b3ec61Sdh155122 NULL, ire->ire_zoneid, ipst); 16387c478bd9Sstevel@tonic-gate } 16397c478bd9Sstevel@tonic-gate } 16407c478bd9Sstevel@tonic-gate 16417c478bd9Sstevel@tonic-gate ire_refrele(ire); /* As done by ire_send(). */ 16427c478bd9Sstevel@tonic-gate return; 16437c478bd9Sstevel@tonic-gate } 16447c478bd9Sstevel@tonic-gate /* 16457c478bd9Sstevel@tonic-gate * Need to remember ire_bucket here as ire_send*() may delete 16467c478bd9Sstevel@tonic-gate * the ire so we cannot reference it after that. 16477c478bd9Sstevel@tonic-gate */ 16487c478bd9Sstevel@tonic-gate irb = ire->ire_bucket; 16497c478bd9Sstevel@tonic-gate if (ire->ire_ipversion == IPV6_VERSION) { 16507c478bd9Sstevel@tonic-gate ire_send_v6(q, mp, ire); 16517c478bd9Sstevel@tonic-gate /* 16527c478bd9Sstevel@tonic-gate * Clean up more than 1 IRE so that the clean up does not 16537c478bd9Sstevel@tonic-gate * need to be done every time when a new IRE is added and 16547c478bd9Sstevel@tonic-gate * the threshold is reached. 16557c478bd9Sstevel@tonic-gate */ 16567c478bd9Sstevel@tonic-gate ire_cache_cleanup(irb, ip6_ire_max_bucket_cnt, 2); 16577c478bd9Sstevel@tonic-gate } else { 16587c478bd9Sstevel@tonic-gate ire_send(q, mp, ire); 16597c478bd9Sstevel@tonic-gate ire_cache_cleanup(irb, ip_ire_max_bucket_cnt, 2); 16607c478bd9Sstevel@tonic-gate } 16617c478bd9Sstevel@tonic-gate } 16627c478bd9Sstevel@tonic-gate 16637c478bd9Sstevel@tonic-gate /* 16647c478bd9Sstevel@tonic-gate * Initialize the ire that is specific to IPv4 part and call 16657c478bd9Sstevel@tonic-gate * ire_init_common to finish it. 16667c478bd9Sstevel@tonic-gate */ 16677c478bd9Sstevel@tonic-gate ire_t * 16687c478bd9Sstevel@tonic-gate ire_init(ire_t *ire, uchar_t *addr, uchar_t *mask, uchar_t *src_addr, 1669*54da8755Ssowmini uchar_t *gateway, uchar_t *in_src_addr, uint_t *max_fragp, nce_t *src_nce, 1670*54da8755Ssowmini queue_t *rfq, queue_t *stq, ushort_t type, ipif_t *ipif, 16717c478bd9Sstevel@tonic-gate ill_t *in_ill, ipaddr_t cmask, uint32_t phandle, uint32_t ihandle, 1672f4b3ec61Sdh155122 uint32_t flags, const iulp_t *ulp_info, tsol_gc_t *gc, tsol_gcgrp_t *gcgrp, 1673f4b3ec61Sdh155122 ip_stack_t *ipst) 16747c478bd9Sstevel@tonic-gate { 167545916cd2Sjpk /* 167645916cd2Sjpk * Reject IRE security attribute creation/initialization 167745916cd2Sjpk * if system is not running in Trusted mode. 167845916cd2Sjpk */ 167945916cd2Sjpk if ((gc != NULL || gcgrp != NULL) && !is_system_labeled()) 168045916cd2Sjpk return (NULL); 168145916cd2Sjpk 16827c478bd9Sstevel@tonic-gate 1683f4b3ec61Sdh155122 BUMP_IRE_STATS(ipst->ips_ire_stats_v4, ire_stats_alloced); 16847c478bd9Sstevel@tonic-gate 16857c478bd9Sstevel@tonic-gate if (addr != NULL) 16867c478bd9Sstevel@tonic-gate bcopy(addr, &ire->ire_addr, IP_ADDR_LEN); 16877c478bd9Sstevel@tonic-gate if (src_addr != NULL) 16887c478bd9Sstevel@tonic-gate bcopy(src_addr, &ire->ire_src_addr, IP_ADDR_LEN); 16897c478bd9Sstevel@tonic-gate if (mask != NULL) { 16907c478bd9Sstevel@tonic-gate bcopy(mask, &ire->ire_mask, IP_ADDR_LEN); 16917c478bd9Sstevel@tonic-gate ire->ire_masklen = ip_mask_to_plen(ire->ire_mask); 16927c478bd9Sstevel@tonic-gate } 16937c478bd9Sstevel@tonic-gate if (gateway != NULL) { 16947c478bd9Sstevel@tonic-gate bcopy(gateway, &ire->ire_gateway_addr, IP_ADDR_LEN); 16957c478bd9Sstevel@tonic-gate } 16967c478bd9Sstevel@tonic-gate if (in_src_addr != NULL) { 16977c478bd9Sstevel@tonic-gate bcopy(in_src_addr, &ire->ire_in_src_addr, IP_ADDR_LEN); 16987c478bd9Sstevel@tonic-gate } 16997c478bd9Sstevel@tonic-gate 17007c478bd9Sstevel@tonic-gate if (type == IRE_CACHE) 17017c478bd9Sstevel@tonic-gate ire->ire_cmask = cmask; 17027c478bd9Sstevel@tonic-gate 170345916cd2Sjpk /* ire_init_common will free the mblks upon encountering any failure */ 1704*54da8755Ssowmini if (!ire_init_common(ire, max_fragp, src_nce, rfq, stq, type, 170545916cd2Sjpk ipif, in_ill, phandle, ihandle, flags, IPV4_VERSION, ulp_info, 1706f4b3ec61Sdh155122 gc, gcgrp, ipst)) 170745916cd2Sjpk return (NULL); 17087c478bd9Sstevel@tonic-gate 17097c478bd9Sstevel@tonic-gate return (ire); 17107c478bd9Sstevel@tonic-gate } 17117c478bd9Sstevel@tonic-gate 17127c478bd9Sstevel@tonic-gate /* 17137c478bd9Sstevel@tonic-gate * Similar to ire_create except that it is called only when 17147c478bd9Sstevel@tonic-gate * we want to allocate ire as an mblk e.g. we have an external 17157c478bd9Sstevel@tonic-gate * resolver ARP. 17167c478bd9Sstevel@tonic-gate */ 17177c478bd9Sstevel@tonic-gate ire_t * 17187c478bd9Sstevel@tonic-gate ire_create_mp(uchar_t *addr, uchar_t *mask, uchar_t *src_addr, uchar_t *gateway, 1719*54da8755Ssowmini uchar_t *in_src_addr, uint_t max_frag, nce_t *src_nce, queue_t *rfq, 1720*54da8755Ssowmini queue_t *stq, ushort_t type, ipif_t *ipif, ill_t *in_ill, 17217c478bd9Sstevel@tonic-gate ipaddr_t cmask, uint32_t phandle, uint32_t ihandle, uint32_t flags, 1722f4b3ec61Sdh155122 const iulp_t *ulp_info, tsol_gc_t *gc, tsol_gcgrp_t *gcgrp, 1723f4b3ec61Sdh155122 ip_stack_t *ipst) 17247c478bd9Sstevel@tonic-gate { 1725c793af95Ssangeeta ire_t *ire, *buf; 17267c478bd9Sstevel@tonic-gate ire_t *ret_ire; 17277c478bd9Sstevel@tonic-gate mblk_t *mp; 1728c793af95Ssangeeta size_t bufsize; 1729c793af95Ssangeeta frtn_t *frtnp; 1730c793af95Ssangeeta ill_t *ill; 17317c478bd9Sstevel@tonic-gate 1732c793af95Ssangeeta bufsize = sizeof (ire_t) + sizeof (frtn_t); 1733c793af95Ssangeeta buf = kmem_alloc(bufsize, KM_NOSLEEP); 1734c793af95Ssangeeta if (buf == NULL) { 17357c478bd9Sstevel@tonic-gate ip1dbg(("ire_create_mp: alloc failed\n")); 17367c478bd9Sstevel@tonic-gate return (NULL); 17377c478bd9Sstevel@tonic-gate } 1738c793af95Ssangeeta frtnp = (frtn_t *)(buf + 1); 1739c793af95Ssangeeta frtnp->free_arg = (caddr_t)buf; 1740c793af95Ssangeeta frtnp->free_func = ire_freemblk; 17417c478bd9Sstevel@tonic-gate 1742c793af95Ssangeeta /* 1743c793af95Ssangeeta * Allocate the new IRE. The ire created will hold a ref on 1744c793af95Ssangeeta * an nce_t after ire_nce_init, and this ref must either be 1745c793af95Ssangeeta * (a) transferred to the ire_cache entry created when ire_add_v4 1746c793af95Ssangeeta * is called after successful arp resolution, or, 1747c793af95Ssangeeta * (b) released, when arp resolution fails 1748c793af95Ssangeeta * Case (b) is handled in ire_freemblk() which will be called 1749c793af95Ssangeeta * when mp is freed as a result of failed arp. 1750c793af95Ssangeeta */ 1751c793af95Ssangeeta mp = esballoc((unsigned char *)buf, bufsize, BPRI_MED, frtnp); 1752c793af95Ssangeeta if (mp == NULL) { 1753c793af95Ssangeeta ip1dbg(("ire_create_mp: alloc failed\n")); 1754c793af95Ssangeeta kmem_free(buf, bufsize); 1755c793af95Ssangeeta return (NULL); 1756c793af95Ssangeeta } 17577c478bd9Sstevel@tonic-gate ire = (ire_t *)mp->b_rptr; 17587c478bd9Sstevel@tonic-gate mp->b_wptr = (uchar_t *)&ire[1]; 17597c478bd9Sstevel@tonic-gate 17607c478bd9Sstevel@tonic-gate /* Start clean. */ 17617c478bd9Sstevel@tonic-gate *ire = ire_null; 17627c478bd9Sstevel@tonic-gate ire->ire_mp = mp; 17637c478bd9Sstevel@tonic-gate mp->b_datap->db_type = IRE_DB_TYPE; 1764c793af95Ssangeeta ire->ire_marks |= IRE_MARK_UNCACHED; 17657c478bd9Sstevel@tonic-gate 17667c478bd9Sstevel@tonic-gate ret_ire = ire_init(ire, addr, mask, src_addr, gateway, in_src_addr, 1767*54da8755Ssowmini NULL, src_nce, rfq, stq, type, ipif, in_ill, cmask, 1768f4b3ec61Sdh155122 phandle, ihandle, flags, ulp_info, gc, gcgrp, ipst); 17697c478bd9Sstevel@tonic-gate 177053bec8caSsowmini ill = (ill_t *)(stq->q_ptr); 17717c478bd9Sstevel@tonic-gate if (ret_ire == NULL) { 1772f4b3ec61Sdh155122 /* ire_freemblk needs these set */ 177353bec8caSsowmini ire->ire_stq_ifindex = ill->ill_phyint->phyint_ifindex; 1774f4b3ec61Sdh155122 ire->ire_ipst = ipst; 17757c478bd9Sstevel@tonic-gate freeb(ire->ire_mp); 17767c478bd9Sstevel@tonic-gate return (NULL); 17777c478bd9Sstevel@tonic-gate } 1778c793af95Ssangeeta ret_ire->ire_stq_ifindex = ill->ill_phyint->phyint_ifindex; 17797c478bd9Sstevel@tonic-gate ASSERT(ret_ire == ire); 17807c478bd9Sstevel@tonic-gate /* 17817c478bd9Sstevel@tonic-gate * ire_max_frag is normally zero here and is atomically set 17827c478bd9Sstevel@tonic-gate * under the irebucket lock in ire_add_v[46] except for the 17837c478bd9Sstevel@tonic-gate * case of IRE_MARK_NOADD. In that event the the ire_max_frag 17847c478bd9Sstevel@tonic-gate * is non-zero here. 17857c478bd9Sstevel@tonic-gate */ 17867c478bd9Sstevel@tonic-gate ire->ire_max_frag = max_frag; 17877c478bd9Sstevel@tonic-gate return (ire); 17887c478bd9Sstevel@tonic-gate } 17897c478bd9Sstevel@tonic-gate 17907c478bd9Sstevel@tonic-gate /* 17917c478bd9Sstevel@tonic-gate * ire_create is called to allocate and initialize a new IRE. 17927c478bd9Sstevel@tonic-gate * 17937c478bd9Sstevel@tonic-gate * NOTE : This is called as writer sometimes though not required 17947c478bd9Sstevel@tonic-gate * by this function. 17957c478bd9Sstevel@tonic-gate */ 17967c478bd9Sstevel@tonic-gate ire_t * 17977c478bd9Sstevel@tonic-gate ire_create(uchar_t *addr, uchar_t *mask, uchar_t *src_addr, uchar_t *gateway, 1798*54da8755Ssowmini uchar_t *in_src_addr, uint_t *max_fragp, nce_t *src_nce, queue_t *rfq, 1799*54da8755Ssowmini queue_t *stq, ushort_t type, ipif_t *ipif, ill_t *in_ill, 18007c478bd9Sstevel@tonic-gate ipaddr_t cmask, uint32_t phandle, uint32_t ihandle, uint32_t flags, 1801f4b3ec61Sdh155122 const iulp_t *ulp_info, tsol_gc_t *gc, tsol_gcgrp_t *gcgrp, 1802f4b3ec61Sdh155122 ip_stack_t *ipst) 18037c478bd9Sstevel@tonic-gate { 18047c478bd9Sstevel@tonic-gate ire_t *ire; 18057c478bd9Sstevel@tonic-gate ire_t *ret_ire; 18067c478bd9Sstevel@tonic-gate 18077c478bd9Sstevel@tonic-gate ire = kmem_cache_alloc(ire_cache, KM_NOSLEEP); 18087c478bd9Sstevel@tonic-gate if (ire == NULL) { 18097c478bd9Sstevel@tonic-gate ip1dbg(("ire_create: alloc failed\n")); 18107c478bd9Sstevel@tonic-gate return (NULL); 18117c478bd9Sstevel@tonic-gate } 18127c478bd9Sstevel@tonic-gate *ire = ire_null; 18137c478bd9Sstevel@tonic-gate 18147c478bd9Sstevel@tonic-gate ret_ire = ire_init(ire, addr, mask, src_addr, gateway, in_src_addr, 1815*54da8755Ssowmini max_fragp, src_nce, rfq, stq, type, ipif, in_ill, cmask, 1816f4b3ec61Sdh155122 phandle, ihandle, flags, ulp_info, gc, gcgrp, ipst); 18177c478bd9Sstevel@tonic-gate 18187c478bd9Sstevel@tonic-gate if (ret_ire == NULL) { 18197c478bd9Sstevel@tonic-gate kmem_cache_free(ire_cache, ire); 18207c478bd9Sstevel@tonic-gate return (NULL); 18217c478bd9Sstevel@tonic-gate } 18227c478bd9Sstevel@tonic-gate ASSERT(ret_ire == ire); 18237c478bd9Sstevel@tonic-gate return (ire); 18247c478bd9Sstevel@tonic-gate } 18257c478bd9Sstevel@tonic-gate 18267c478bd9Sstevel@tonic-gate 18277c478bd9Sstevel@tonic-gate /* 18287c478bd9Sstevel@tonic-gate * Common to IPv4 and IPv6 18297c478bd9Sstevel@tonic-gate */ 183045916cd2Sjpk boolean_t 1831*54da8755Ssowmini ire_init_common(ire_t *ire, uint_t *max_fragp, nce_t *src_nce, queue_t *rfq, 1832*54da8755Ssowmini queue_t *stq, ushort_t type, ipif_t *ipif, ill_t *in_ill, uint32_t phandle, 1833*54da8755Ssowmini uint32_t ihandle, uint32_t flags, uchar_t ipversion, const iulp_t *ulp_info, 1834*54da8755Ssowmini tsol_gc_t *gc, tsol_gcgrp_t *gcgrp, ip_stack_t *ipst) 18357c478bd9Sstevel@tonic-gate { 18367c478bd9Sstevel@tonic-gate ire->ire_max_fragp = max_fragp; 1837f4b3ec61Sdh155122 ire->ire_frag_flag |= (ipst->ips_ip_path_mtu_discovery) ? IPH_DF : 0; 18387c478bd9Sstevel@tonic-gate 183945916cd2Sjpk #ifdef DEBUG 184045916cd2Sjpk if (ipif != NULL) { 18417c478bd9Sstevel@tonic-gate if (ipif->ipif_isv6) 18427c478bd9Sstevel@tonic-gate ASSERT(ipversion == IPV6_VERSION); 18437c478bd9Sstevel@tonic-gate else 18447c478bd9Sstevel@tonic-gate ASSERT(ipversion == IPV4_VERSION); 18457c478bd9Sstevel@tonic-gate } 184645916cd2Sjpk #endif /* DEBUG */ 184745916cd2Sjpk 184845916cd2Sjpk /* 184945916cd2Sjpk * Create/initialize IRE security attribute only in Trusted mode; 185045916cd2Sjpk * if the passed in gc/gcgrp is non-NULL, we expect that the caller 185145916cd2Sjpk * has held a reference to it and will release it when this routine 185245916cd2Sjpk * returns a failure, otherwise we own the reference. We do this 185345916cd2Sjpk * prior to initializing the rest IRE fields. 1854dc3879f9Sjarrett * 1855dc3879f9Sjarrett * Don't allocate ire_gw_secattr for the resolver case to prevent 1856dc3879f9Sjarrett * memory leak (in case of external resolution failure). We'll 1857dc3879f9Sjarrett * allocate it after a successful external resolution, in ire_add(). 1858dc3879f9Sjarrett * Note that ire->ire_mp != NULL here means this ire is headed 1859dc3879f9Sjarrett * to an external resolver. 186045916cd2Sjpk */ 186145916cd2Sjpk if (is_system_labeled()) { 186245916cd2Sjpk if ((type & (IRE_LOCAL | IRE_LOOPBACK | IRE_BROADCAST | 186345916cd2Sjpk IRE_INTERFACE)) != 0) { 186445916cd2Sjpk /* release references on behalf of caller */ 186545916cd2Sjpk if (gc != NULL) 186645916cd2Sjpk GC_REFRELE(gc); 186745916cd2Sjpk if (gcgrp != NULL) 186845916cd2Sjpk GCGRP_REFRELE(gcgrp); 1869dc3879f9Sjarrett } else if ((ire->ire_mp == NULL) && 1870dc3879f9Sjarrett tsol_ire_init_gwattr(ire, ipversion, gc, gcgrp) != 0) { 187145916cd2Sjpk return (B_FALSE); 187245916cd2Sjpk } 187345916cd2Sjpk } 18747c478bd9Sstevel@tonic-gate 18757c478bd9Sstevel@tonic-gate ire->ire_stq = stq; 18767c478bd9Sstevel@tonic-gate ire->ire_rfq = rfq; 18777c478bd9Sstevel@tonic-gate ire->ire_type = type; 18787c478bd9Sstevel@tonic-gate ire->ire_flags = RTF_UP | flags; 18797c478bd9Sstevel@tonic-gate ire->ire_ident = TICK_TO_MSEC(lbolt); 18807c478bd9Sstevel@tonic-gate bcopy(ulp_info, &ire->ire_uinfo, sizeof (iulp_t)); 18817c478bd9Sstevel@tonic-gate 18827c478bd9Sstevel@tonic-gate ire->ire_tire_mark = ire->ire_ob_pkt_count + ire->ire_ib_pkt_count; 18837c478bd9Sstevel@tonic-gate ire->ire_last_used_time = lbolt; 18847c478bd9Sstevel@tonic-gate ire->ire_create_time = (uint32_t)gethrestime_sec(); 18857c478bd9Sstevel@tonic-gate 18867c478bd9Sstevel@tonic-gate /* 18877c478bd9Sstevel@tonic-gate * If this IRE is an IRE_CACHE, inherit the handles from the 18887c478bd9Sstevel@tonic-gate * parent IREs. For others in the forwarding table, assign appropriate 18897c478bd9Sstevel@tonic-gate * new ones. 18907c478bd9Sstevel@tonic-gate * 18917c478bd9Sstevel@tonic-gate * The mutex protecting ire_handle is because ire_create is not always 18927c478bd9Sstevel@tonic-gate * called as a writer. 18937c478bd9Sstevel@tonic-gate */ 18947c478bd9Sstevel@tonic-gate if (ire->ire_type & IRE_OFFSUBNET) { 1895f4b3ec61Sdh155122 mutex_enter(&ipst->ips_ire_handle_lock); 1896f4b3ec61Sdh155122 ire->ire_phandle = (uint32_t)ipst->ips_ire_handle++; 1897f4b3ec61Sdh155122 mutex_exit(&ipst->ips_ire_handle_lock); 18987c478bd9Sstevel@tonic-gate } else if (ire->ire_type & IRE_INTERFACE) { 1899f4b3ec61Sdh155122 mutex_enter(&ipst->ips_ire_handle_lock); 1900f4b3ec61Sdh155122 ire->ire_ihandle = (uint32_t)ipst->ips_ire_handle++; 1901f4b3ec61Sdh155122 mutex_exit(&ipst->ips_ire_handle_lock); 19027c478bd9Sstevel@tonic-gate } else if (ire->ire_type == IRE_CACHE) { 19037c478bd9Sstevel@tonic-gate ire->ire_phandle = phandle; 19047c478bd9Sstevel@tonic-gate ire->ire_ihandle = ihandle; 19057c478bd9Sstevel@tonic-gate } 19067c478bd9Sstevel@tonic-gate ire->ire_in_ill = in_ill; 19077c478bd9Sstevel@tonic-gate ire->ire_ipif = ipif; 19087c478bd9Sstevel@tonic-gate if (ipif != NULL) { 19097c478bd9Sstevel@tonic-gate ire->ire_ipif_seqid = ipif->ipif_seqid; 19107c478bd9Sstevel@tonic-gate ire->ire_zoneid = ipif->ipif_zoneid; 19117c478bd9Sstevel@tonic-gate } else { 19127c478bd9Sstevel@tonic-gate ire->ire_zoneid = GLOBAL_ZONEID; 19137c478bd9Sstevel@tonic-gate } 19147c478bd9Sstevel@tonic-gate ire->ire_ipversion = ipversion; 19157c478bd9Sstevel@tonic-gate mutex_init(&ire->ire_lock, NULL, MUTEX_DEFAULT, NULL); 1916c793af95Ssangeeta if (ipversion == IPV4_VERSION) { 1917*54da8755Ssowmini /* 1918*54da8755Ssowmini * IPv6 initializes the ire_nce in ire_add_v6, which expects 1919*54da8755Ssowmini * to find the ire_nce to be null when it is called. 1920*54da8755Ssowmini */ 1921*54da8755Ssowmini if (ire_nce_init(ire, src_nce) != 0) { 1922c793af95Ssangeeta /* some failure occurred. propagate error back */ 1923c793af95Ssangeeta return (B_FALSE); 1924c793af95Ssangeeta } 1925c793af95Ssangeeta } 1926c793af95Ssangeeta ire->ire_refcnt = 1; 1927f4b3ec61Sdh155122 ire->ire_ipst = ipst; /* No netstack_hold */ 19287c478bd9Sstevel@tonic-gate 19297c478bd9Sstevel@tonic-gate #ifdef IRE_DEBUG 19307c478bd9Sstevel@tonic-gate bzero(ire->ire_trace, sizeof (th_trace_t *) * IP_TR_HASH_MAX); 19317c478bd9Sstevel@tonic-gate #endif 193245916cd2Sjpk 193345916cd2Sjpk return (B_TRUE); 19347c478bd9Sstevel@tonic-gate } 19357c478bd9Sstevel@tonic-gate 19367c478bd9Sstevel@tonic-gate /* 19377c478bd9Sstevel@tonic-gate * This routine is called repeatedly by ipif_up to create broadcast IREs. 19387c478bd9Sstevel@tonic-gate * It is passed a pointer to a slot in an IRE pointer array into which to 19397c478bd9Sstevel@tonic-gate * place the pointer to the new IRE, if indeed we create one. If the 19407c478bd9Sstevel@tonic-gate * IRE corresponding to the address passed in would be a duplicate of an 19417c478bd9Sstevel@tonic-gate * existing one, we don't create the new one. irep is incremented before 19427c478bd9Sstevel@tonic-gate * return only if we do create a new IRE. (Always called as writer.) 19437c478bd9Sstevel@tonic-gate * 19447c478bd9Sstevel@tonic-gate * Note that with the "match_flags" parameter, we can match on either 19457c478bd9Sstevel@tonic-gate * a particular logical interface (MATCH_IRE_IPIF) or for all logical 19467c478bd9Sstevel@tonic-gate * interfaces for a given physical interface (MATCH_IRE_ILL). Currently, 19477c478bd9Sstevel@tonic-gate * we only create broadcast ire's on a per physical interface basis. If 19487c478bd9Sstevel@tonic-gate * someone is going to be mucking with logical interfaces, it is important 19497c478bd9Sstevel@tonic-gate * to call "ipif_check_bcast_ires()" to make sure that any change to a 19507c478bd9Sstevel@tonic-gate * logical interface will not cause critical broadcast IRE's to be deleted. 19517c478bd9Sstevel@tonic-gate */ 19527c478bd9Sstevel@tonic-gate ire_t ** 19537c478bd9Sstevel@tonic-gate ire_check_and_create_bcast(ipif_t *ipif, ipaddr_t addr, ire_t **irep, 19547c478bd9Sstevel@tonic-gate int match_flags) 19557c478bd9Sstevel@tonic-gate { 19567c478bd9Sstevel@tonic-gate ire_t *ire; 19577c478bd9Sstevel@tonic-gate uint64_t check_flags = IPIF_DEPRECATED | IPIF_NOLOCAL | IPIF_ANYCAST; 1958f4b3ec61Sdh155122 ip_stack_t *ipst = ipif->ipif_ill->ill_ipst; 19597c478bd9Sstevel@tonic-gate 19607c478bd9Sstevel@tonic-gate /* 19617c478bd9Sstevel@tonic-gate * No broadcast IREs for the LOOPBACK interface 19627c478bd9Sstevel@tonic-gate * or others such as point to point and IPIF_NOXMIT. 19637c478bd9Sstevel@tonic-gate */ 19647c478bd9Sstevel@tonic-gate if (!(ipif->ipif_flags & IPIF_BROADCAST) || 19657c478bd9Sstevel@tonic-gate (ipif->ipif_flags & IPIF_NOXMIT)) 19667c478bd9Sstevel@tonic-gate return (irep); 19677c478bd9Sstevel@tonic-gate 19687c478bd9Sstevel@tonic-gate /* If this would be a duplicate, don't bother. */ 19697c478bd9Sstevel@tonic-gate if ((ire = ire_ctable_lookup(addr, 0, IRE_BROADCAST, ipif, 1970f4b3ec61Sdh155122 ipif->ipif_zoneid, NULL, match_flags, ipst)) != NULL) { 19717c478bd9Sstevel@tonic-gate /* 19727c478bd9Sstevel@tonic-gate * We look for non-deprecated (and non-anycast, non-nolocal) 19737c478bd9Sstevel@tonic-gate * ipifs as the best choice. ipifs with check_flags matching 19747c478bd9Sstevel@tonic-gate * (deprecated, etc) are used only if non-deprecated ipifs 19757c478bd9Sstevel@tonic-gate * are not available. if the existing ire's ipif is deprecated 19767c478bd9Sstevel@tonic-gate * and the new ipif is non-deprecated, switch to the new ipif 19777c478bd9Sstevel@tonic-gate */ 19787c478bd9Sstevel@tonic-gate if ((!(ire->ire_ipif->ipif_flags & check_flags)) || 19797c478bd9Sstevel@tonic-gate (ipif->ipif_flags & check_flags)) { 19807c478bd9Sstevel@tonic-gate ire_refrele(ire); 19817c478bd9Sstevel@tonic-gate return (irep); 19827c478bd9Sstevel@tonic-gate } 19837c478bd9Sstevel@tonic-gate /* 19847c478bd9Sstevel@tonic-gate * Bcast ires exist in pairs. Both have to be deleted, 19857c478bd9Sstevel@tonic-gate * Since we are exclusive we can make the above assertion. 19867c478bd9Sstevel@tonic-gate * The 1st has to be refrele'd since it was ctable_lookup'd. 19877c478bd9Sstevel@tonic-gate */ 19887c478bd9Sstevel@tonic-gate ASSERT(IAM_WRITER_IPIF(ipif)); 19897c478bd9Sstevel@tonic-gate ASSERT(ire->ire_next->ire_addr == ire->ire_addr); 19907c478bd9Sstevel@tonic-gate ire_delete(ire->ire_next); 19917c478bd9Sstevel@tonic-gate ire_delete(ire); 19927c478bd9Sstevel@tonic-gate ire_refrele(ire); 19937c478bd9Sstevel@tonic-gate } 19947c478bd9Sstevel@tonic-gate 19957c478bd9Sstevel@tonic-gate irep = ire_create_bcast(ipif, addr, irep); 19967c478bd9Sstevel@tonic-gate 19977c478bd9Sstevel@tonic-gate return (irep); 19987c478bd9Sstevel@tonic-gate } 19997c478bd9Sstevel@tonic-gate 20007c478bd9Sstevel@tonic-gate uint_t ip_loopback_mtu = IP_LOOPBACK_MTU; 20017c478bd9Sstevel@tonic-gate 20027c478bd9Sstevel@tonic-gate /* 20037c478bd9Sstevel@tonic-gate * This routine is called from ipif_check_bcast_ires and ire_check_bcast. 20047c478bd9Sstevel@tonic-gate * It leaves all the verifying and deleting to those routines. So it always 20057c478bd9Sstevel@tonic-gate * creates 2 bcast ires and chains them into the ire array passed in. 20067c478bd9Sstevel@tonic-gate */ 20077c478bd9Sstevel@tonic-gate ire_t ** 20087c478bd9Sstevel@tonic-gate ire_create_bcast(ipif_t *ipif, ipaddr_t addr, ire_t **irep) 20097c478bd9Sstevel@tonic-gate { 2010f4b3ec61Sdh155122 ip_stack_t *ipst = ipif->ipif_ill->ill_ipst; 2011f4b3ec61Sdh155122 20127c478bd9Sstevel@tonic-gate *irep++ = ire_create( 20137c478bd9Sstevel@tonic-gate (uchar_t *)&addr, /* dest addr */ 20147c478bd9Sstevel@tonic-gate (uchar_t *)&ip_g_all_ones, /* mask */ 20157c478bd9Sstevel@tonic-gate (uchar_t *)&ipif->ipif_src_addr, /* source addr */ 20167c478bd9Sstevel@tonic-gate NULL, /* no gateway */ 20177c478bd9Sstevel@tonic-gate NULL, /* no in_src_addr */ 20187c478bd9Sstevel@tonic-gate &ipif->ipif_mtu, /* max frag */ 2019*54da8755Ssowmini NULL, /* no src nce */ 20207c478bd9Sstevel@tonic-gate ipif->ipif_rq, /* recv-from queue */ 20217c478bd9Sstevel@tonic-gate ipif->ipif_wq, /* send-to queue */ 20227c478bd9Sstevel@tonic-gate IRE_BROADCAST, 20237c478bd9Sstevel@tonic-gate ipif, 20247c478bd9Sstevel@tonic-gate NULL, 20257c478bd9Sstevel@tonic-gate 0, 20267c478bd9Sstevel@tonic-gate 0, 20277c478bd9Sstevel@tonic-gate 0, 20287c478bd9Sstevel@tonic-gate 0, 202945916cd2Sjpk &ire_uinfo_null, 203045916cd2Sjpk NULL, 2031f4b3ec61Sdh155122 NULL, 2032f4b3ec61Sdh155122 ipst); 20337c478bd9Sstevel@tonic-gate 20347c478bd9Sstevel@tonic-gate *irep++ = ire_create( 20357c478bd9Sstevel@tonic-gate (uchar_t *)&addr, /* dest address */ 20367c478bd9Sstevel@tonic-gate (uchar_t *)&ip_g_all_ones, /* mask */ 20377c478bd9Sstevel@tonic-gate (uchar_t *)&ipif->ipif_src_addr, /* source address */ 20387c478bd9Sstevel@tonic-gate NULL, /* no gateway */ 20397c478bd9Sstevel@tonic-gate NULL, /* no in_src_addr */ 20407c478bd9Sstevel@tonic-gate &ip_loopback_mtu, /* max frag size */ 2041*54da8755Ssowmini NULL, /* no src_nce */ 20427c478bd9Sstevel@tonic-gate ipif->ipif_rq, /* recv-from queue */ 20437c478bd9Sstevel@tonic-gate NULL, /* no send-to queue */ 20447c478bd9Sstevel@tonic-gate IRE_BROADCAST, /* Needed for fanout in wput */ 20457c478bd9Sstevel@tonic-gate ipif, 20467c478bd9Sstevel@tonic-gate NULL, 20477c478bd9Sstevel@tonic-gate 0, 20487c478bd9Sstevel@tonic-gate 0, 20497c478bd9Sstevel@tonic-gate 0, 20507c478bd9Sstevel@tonic-gate 0, 205145916cd2Sjpk &ire_uinfo_null, 205245916cd2Sjpk NULL, 2053f4b3ec61Sdh155122 NULL, 2054f4b3ec61Sdh155122 ipst); 20557c478bd9Sstevel@tonic-gate 20567c478bd9Sstevel@tonic-gate return (irep); 20577c478bd9Sstevel@tonic-gate } 20587c478bd9Sstevel@tonic-gate 20597c478bd9Sstevel@tonic-gate /* 20607c478bd9Sstevel@tonic-gate * ire_walk routine to delete or update any IRE_CACHE that might contain 20617c478bd9Sstevel@tonic-gate * stale information. 20627c478bd9Sstevel@tonic-gate * The flags state which entries to delete or update. 20637c478bd9Sstevel@tonic-gate * Garbage collection is done separately using kmem alloc callbacks to 20647c478bd9Sstevel@tonic-gate * ip_trash_ire_reclaim. 20657c478bd9Sstevel@tonic-gate * Used for both IPv4 and IPv6. However, IPv6 only uses FLUSH_MTU_TIME 20667c478bd9Sstevel@tonic-gate * since other stale information is cleaned up using NUD. 20677c478bd9Sstevel@tonic-gate */ 20687c478bd9Sstevel@tonic-gate void 20697c478bd9Sstevel@tonic-gate ire_expire(ire_t *ire, char *arg) 20707c478bd9Sstevel@tonic-gate { 2071f4b3ec61Sdh155122 ire_expire_arg_t *ieap = (ire_expire_arg_t *)(uintptr_t)arg; 20727c478bd9Sstevel@tonic-gate ill_t *stq_ill; 2073f4b3ec61Sdh155122 int flush_flags = ieap->iea_flush_flag; 2074f4b3ec61Sdh155122 ip_stack_t *ipst = ieap->iea_ipst; 20757c478bd9Sstevel@tonic-gate 20767c478bd9Sstevel@tonic-gate if ((flush_flags & FLUSH_REDIRECT_TIME) && 20776bdb8e66Sdd193516 (ire->ire_flags & RTF_DYNAMIC)) { 20787c478bd9Sstevel@tonic-gate /* Make sure we delete the corresponding IRE_CACHE */ 20797c478bd9Sstevel@tonic-gate ip1dbg(("ire_expire: all redirects\n")); 2080f4b3ec61Sdh155122 ip_rts_rtmsg(RTM_DELETE, ire, 0, ipst); 20817c478bd9Sstevel@tonic-gate ire_delete(ire); 2082f4b3ec61Sdh155122 atomic_dec_32(&ipst->ips_ip_redirect_cnt); 20837c478bd9Sstevel@tonic-gate return; 20847c478bd9Sstevel@tonic-gate } 20857c478bd9Sstevel@tonic-gate if (ire->ire_type != IRE_CACHE) 20867c478bd9Sstevel@tonic-gate return; 20877c478bd9Sstevel@tonic-gate 20887c478bd9Sstevel@tonic-gate if (flush_flags & FLUSH_ARP_TIME) { 20897c478bd9Sstevel@tonic-gate /* 20907c478bd9Sstevel@tonic-gate * Remove all IRE_CACHE. 20917c478bd9Sstevel@tonic-gate * Verify that create time is more than 20927c478bd9Sstevel@tonic-gate * ip_ire_arp_interval milliseconds ago. 20937c478bd9Sstevel@tonic-gate */ 2094f4b3ec61Sdh155122 if (NCE_EXPIRED(ire->ire_nce, ipst)) { 20957c478bd9Sstevel@tonic-gate ire_delete(ire); 20967c478bd9Sstevel@tonic-gate return; 20977c478bd9Sstevel@tonic-gate } 20987c478bd9Sstevel@tonic-gate } 20997c478bd9Sstevel@tonic-gate 2100f4b3ec61Sdh155122 if (ipst->ips_ip_path_mtu_discovery && (flush_flags & FLUSH_MTU_TIME) && 21017c478bd9Sstevel@tonic-gate (ire->ire_ipif != NULL)) { 21027c478bd9Sstevel@tonic-gate /* Increase pmtu if it is less than the interface mtu */ 21037c478bd9Sstevel@tonic-gate mutex_enter(&ire->ire_lock); 21047c478bd9Sstevel@tonic-gate /* 21057c478bd9Sstevel@tonic-gate * If the ipif is a vni (whose mtu is 0, since it's virtual) 21067c478bd9Sstevel@tonic-gate * get the mtu from the sending interfaces' ipif 21077c478bd9Sstevel@tonic-gate */ 21087c478bd9Sstevel@tonic-gate if (IS_VNI(ire->ire_ipif->ipif_ill)) { 21097c478bd9Sstevel@tonic-gate stq_ill = ire->ire_stq->q_ptr; 21107c478bd9Sstevel@tonic-gate ire->ire_max_frag = MIN(stq_ill->ill_ipif->ipif_mtu, 21117c478bd9Sstevel@tonic-gate IP_MAXPACKET); 21127c478bd9Sstevel@tonic-gate } else { 21137c478bd9Sstevel@tonic-gate ire->ire_max_frag = MIN(ire->ire_ipif->ipif_mtu, 21147c478bd9Sstevel@tonic-gate IP_MAXPACKET); 21157c478bd9Sstevel@tonic-gate } 21167c478bd9Sstevel@tonic-gate ire->ire_frag_flag |= IPH_DF; 21177c478bd9Sstevel@tonic-gate mutex_exit(&ire->ire_lock); 21187c478bd9Sstevel@tonic-gate } 21197c478bd9Sstevel@tonic-gate } 21207c478bd9Sstevel@tonic-gate 21217c478bd9Sstevel@tonic-gate /* 21227c478bd9Sstevel@tonic-gate * Return any local address. We use this to target ourselves 21237c478bd9Sstevel@tonic-gate * when the src address was specified as 'default'. 21247c478bd9Sstevel@tonic-gate * Preference for IRE_LOCAL entries. 21257c478bd9Sstevel@tonic-gate */ 21267c478bd9Sstevel@tonic-gate ire_t * 2127f4b3ec61Sdh155122 ire_lookup_local(zoneid_t zoneid, ip_stack_t *ipst) 21287c478bd9Sstevel@tonic-gate { 21297c478bd9Sstevel@tonic-gate ire_t *ire; 21307c478bd9Sstevel@tonic-gate irb_t *irb; 21317c478bd9Sstevel@tonic-gate ire_t *maybe = NULL; 21327c478bd9Sstevel@tonic-gate int i; 21337c478bd9Sstevel@tonic-gate 2134f4b3ec61Sdh155122 for (i = 0; i < ipst->ips_ip_cache_table_size; i++) { 2135f4b3ec61Sdh155122 irb = &ipst->ips_ip_cache_table[i]; 21367c478bd9Sstevel@tonic-gate if (irb->irb_ire == NULL) 21377c478bd9Sstevel@tonic-gate continue; 21387c478bd9Sstevel@tonic-gate rw_enter(&irb->irb_lock, RW_READER); 21397c478bd9Sstevel@tonic-gate for (ire = irb->irb_ire; ire != NULL; ire = ire->ire_next) { 21407c478bd9Sstevel@tonic-gate if ((ire->ire_marks & IRE_MARK_CONDEMNED) || 214145916cd2Sjpk (ire->ire_zoneid != zoneid && 214245916cd2Sjpk ire->ire_zoneid != ALL_ZONES)) 21437c478bd9Sstevel@tonic-gate continue; 21447c478bd9Sstevel@tonic-gate switch (ire->ire_type) { 21457c478bd9Sstevel@tonic-gate case IRE_LOOPBACK: 21467c478bd9Sstevel@tonic-gate if (maybe == NULL) { 21477c478bd9Sstevel@tonic-gate IRE_REFHOLD(ire); 21487c478bd9Sstevel@tonic-gate maybe = ire; 21497c478bd9Sstevel@tonic-gate } 21507c478bd9Sstevel@tonic-gate break; 21517c478bd9Sstevel@tonic-gate case IRE_LOCAL: 21527c478bd9Sstevel@tonic-gate if (maybe != NULL) { 21537c478bd9Sstevel@tonic-gate ire_refrele(maybe); 21547c478bd9Sstevel@tonic-gate } 21557c478bd9Sstevel@tonic-gate IRE_REFHOLD(ire); 21567c478bd9Sstevel@tonic-gate rw_exit(&irb->irb_lock); 21577c478bd9Sstevel@tonic-gate return (ire); 21587c478bd9Sstevel@tonic-gate } 21597c478bd9Sstevel@tonic-gate } 21607c478bd9Sstevel@tonic-gate rw_exit(&irb->irb_lock); 21617c478bd9Sstevel@tonic-gate } 21627c478bd9Sstevel@tonic-gate return (maybe); 21637c478bd9Sstevel@tonic-gate } 21647c478bd9Sstevel@tonic-gate 21657c478bd9Sstevel@tonic-gate /* 21667c478bd9Sstevel@tonic-gate * If the specified IRE is associated with a particular ILL, return 21677c478bd9Sstevel@tonic-gate * that ILL pointer (May be called as writer.). 21687c478bd9Sstevel@tonic-gate * 21697c478bd9Sstevel@tonic-gate * NOTE : This is not a generic function that can be used always. 21707c478bd9Sstevel@tonic-gate * This function always returns the ill of the outgoing packets 21717c478bd9Sstevel@tonic-gate * if this ire is used. 21727c478bd9Sstevel@tonic-gate */ 21737c478bd9Sstevel@tonic-gate ill_t * 217445916cd2Sjpk ire_to_ill(const ire_t *ire) 21757c478bd9Sstevel@tonic-gate { 21767c478bd9Sstevel@tonic-gate ill_t *ill = NULL; 21777c478bd9Sstevel@tonic-gate 21787c478bd9Sstevel@tonic-gate /* 21797c478bd9Sstevel@tonic-gate * 1) For an IRE_CACHE, ire_ipif is the one where it obtained 21807c478bd9Sstevel@tonic-gate * the source address from. ire_stq is the one where the 21817c478bd9Sstevel@tonic-gate * packets will be sent out on. We return that here. 21827c478bd9Sstevel@tonic-gate * 21837c478bd9Sstevel@tonic-gate * 2) IRE_BROADCAST normally has a loopback and a non-loopback 21847c478bd9Sstevel@tonic-gate * copy and they always exist next to each other with loopback 21857c478bd9Sstevel@tonic-gate * copy being the first one. If we are called on the non-loopback 21867c478bd9Sstevel@tonic-gate * copy, return the one pointed by ire_stq. If it was called on 21877c478bd9Sstevel@tonic-gate * a loopback copy, we still return the one pointed by the next 21887c478bd9Sstevel@tonic-gate * ire's ire_stq pointer i.e the one pointed by the non-loopback 21897c478bd9Sstevel@tonic-gate * copy. We don't want use ire_ipif as it might represent the 21907c478bd9Sstevel@tonic-gate * source address (if we borrow source addresses for 21917c478bd9Sstevel@tonic-gate * IRE_BROADCASTS in the future). 21927c478bd9Sstevel@tonic-gate * However if an interface is currently coming up, the above 21937c478bd9Sstevel@tonic-gate * condition may not hold during that period since the ires 21947c478bd9Sstevel@tonic-gate * are added one at a time. Thus one of the pair could have been 21957c478bd9Sstevel@tonic-gate * added and the other not yet added. 21962bc4236aSnordmark * 3) For many other IREs (e.g., IRE_LOCAL), ire_rfq indicates the ill. 21972bc4236aSnordmark * 4) For all others return the ones pointed by ire_ipif->ipif_ill. 21982bc4236aSnordmark * That handles IRE_LOOPBACK. 21997c478bd9Sstevel@tonic-gate */ 22007c478bd9Sstevel@tonic-gate 22017c478bd9Sstevel@tonic-gate if (ire->ire_type == IRE_CACHE) { 22027c478bd9Sstevel@tonic-gate ill = (ill_t *)ire->ire_stq->q_ptr; 22037c478bd9Sstevel@tonic-gate } else if (ire->ire_type == IRE_BROADCAST) { 22047c478bd9Sstevel@tonic-gate if (ire->ire_stq != NULL) { 22057c478bd9Sstevel@tonic-gate ill = (ill_t *)ire->ire_stq->q_ptr; 22067c478bd9Sstevel@tonic-gate } else { 22077c478bd9Sstevel@tonic-gate ire_t *ire_next; 22087c478bd9Sstevel@tonic-gate 22097c478bd9Sstevel@tonic-gate ire_next = ire->ire_next; 22107c478bd9Sstevel@tonic-gate if (ire_next != NULL && 22117c478bd9Sstevel@tonic-gate ire_next->ire_type == IRE_BROADCAST && 22127c478bd9Sstevel@tonic-gate ire_next->ire_addr == ire->ire_addr && 22137c478bd9Sstevel@tonic-gate ire_next->ire_ipif == ire->ire_ipif) { 22147c478bd9Sstevel@tonic-gate ill = (ill_t *)ire_next->ire_stq->q_ptr; 22157c478bd9Sstevel@tonic-gate } 22167c478bd9Sstevel@tonic-gate } 22172bc4236aSnordmark } else if (ire->ire_rfq != NULL) { 22182bc4236aSnordmark ill = ire->ire_rfq->q_ptr; 22197c478bd9Sstevel@tonic-gate } else if (ire->ire_ipif != NULL) { 22207c478bd9Sstevel@tonic-gate ill = ire->ire_ipif->ipif_ill; 22217c478bd9Sstevel@tonic-gate } 22227c478bd9Sstevel@tonic-gate return (ill); 22237c478bd9Sstevel@tonic-gate } 22247c478bd9Sstevel@tonic-gate 22257c478bd9Sstevel@tonic-gate /* Arrange to call the specified function for every IRE in the world. */ 22267c478bd9Sstevel@tonic-gate void 2227f4b3ec61Sdh155122 ire_walk(pfv_t func, void *arg, ip_stack_t *ipst) 22287c478bd9Sstevel@tonic-gate { 2229f4b3ec61Sdh155122 ire_walk_ipvers(func, arg, 0, ALL_ZONES, ipst); 22307c478bd9Sstevel@tonic-gate } 22317c478bd9Sstevel@tonic-gate 22327c478bd9Sstevel@tonic-gate void 2233f4b3ec61Sdh155122 ire_walk_v4(pfv_t func, void *arg, zoneid_t zoneid, ip_stack_t *ipst) 22347c478bd9Sstevel@tonic-gate { 2235f4b3ec61Sdh155122 ire_walk_ipvers(func, arg, IPV4_VERSION, zoneid, ipst); 22367c478bd9Sstevel@tonic-gate } 22377c478bd9Sstevel@tonic-gate 22387c478bd9Sstevel@tonic-gate void 2239f4b3ec61Sdh155122 ire_walk_v6(pfv_t func, void *arg, zoneid_t zoneid, ip_stack_t *ipst) 22407c478bd9Sstevel@tonic-gate { 2241f4b3ec61Sdh155122 ire_walk_ipvers(func, arg, IPV6_VERSION, zoneid, ipst); 22427c478bd9Sstevel@tonic-gate } 22437c478bd9Sstevel@tonic-gate 22447c478bd9Sstevel@tonic-gate /* 22457c478bd9Sstevel@tonic-gate * Walk a particular version. version == 0 means both v4 and v6. 22467c478bd9Sstevel@tonic-gate */ 22477c478bd9Sstevel@tonic-gate static void 2248f4b3ec61Sdh155122 ire_walk_ipvers(pfv_t func, void *arg, uchar_t vers, zoneid_t zoneid, 2249f4b3ec61Sdh155122 ip_stack_t *ipst) 22507c478bd9Sstevel@tonic-gate { 22517c478bd9Sstevel@tonic-gate if (vers != IPV6_VERSION) { 2252c793af95Ssangeeta /* 2253c793af95Ssangeeta * ip_forwarding_table variable doesn't matter for IPv4 since 2254f4b3ec61Sdh155122 * ire_walk_ill_tables uses ips_ip_ftable for IPv4. 2255c793af95Ssangeeta */ 22567c478bd9Sstevel@tonic-gate ire_walk_ill_tables(0, 0, func, arg, IP_MASK_TABLE_SIZE, 2257c793af95Ssangeeta 0, NULL, 2258f4b3ec61Sdh155122 ipst->ips_ip_cache_table_size, ipst->ips_ip_cache_table, 2259f4b3ec61Sdh155122 NULL, zoneid, ipst); 22607c478bd9Sstevel@tonic-gate } 22617c478bd9Sstevel@tonic-gate if (vers != IPV4_VERSION) { 22627c478bd9Sstevel@tonic-gate ire_walk_ill_tables(0, 0, func, arg, IP6_MASK_TABLE_SIZE, 2263f4b3ec61Sdh155122 ipst->ips_ip6_ftable_hash_size, 2264f4b3ec61Sdh155122 ipst->ips_ip_forwarding_table_v6, 2265f4b3ec61Sdh155122 ipst->ips_ip6_cache_table_size, 2266f4b3ec61Sdh155122 ipst->ips_ip_cache_table_v6, NULL, zoneid, ipst); 22677c478bd9Sstevel@tonic-gate } 22687c478bd9Sstevel@tonic-gate } 22697c478bd9Sstevel@tonic-gate 22707c478bd9Sstevel@tonic-gate /* 22717c478bd9Sstevel@tonic-gate * Arrange to call the specified 22727c478bd9Sstevel@tonic-gate * function for every IRE that matches the ill. 22737c478bd9Sstevel@tonic-gate */ 22747c478bd9Sstevel@tonic-gate void 227545916cd2Sjpk ire_walk_ill(uint_t match_flags, uint_t ire_type, pfv_t func, void *arg, 22767c478bd9Sstevel@tonic-gate ill_t *ill) 22777c478bd9Sstevel@tonic-gate { 22787c478bd9Sstevel@tonic-gate ire_walk_ill_ipvers(match_flags, ire_type, func, arg, 0, ill); 22797c478bd9Sstevel@tonic-gate } 22807c478bd9Sstevel@tonic-gate 22817c478bd9Sstevel@tonic-gate void 228245916cd2Sjpk ire_walk_ill_v4(uint_t match_flags, uint_t ire_type, pfv_t func, void *arg, 22837c478bd9Sstevel@tonic-gate ill_t *ill) 22847c478bd9Sstevel@tonic-gate { 22857c478bd9Sstevel@tonic-gate ire_walk_ill_ipvers(match_flags, ire_type, func, arg, IPV4_VERSION, 22867c478bd9Sstevel@tonic-gate ill); 22877c478bd9Sstevel@tonic-gate } 22887c478bd9Sstevel@tonic-gate 22897c478bd9Sstevel@tonic-gate void 229045916cd2Sjpk ire_walk_ill_v6(uint_t match_flags, uint_t ire_type, pfv_t func, void *arg, 22917c478bd9Sstevel@tonic-gate ill_t *ill) 22927c478bd9Sstevel@tonic-gate { 22937c478bd9Sstevel@tonic-gate ire_walk_ill_ipvers(match_flags, ire_type, func, arg, IPV6_VERSION, 22947c478bd9Sstevel@tonic-gate ill); 22957c478bd9Sstevel@tonic-gate } 22967c478bd9Sstevel@tonic-gate 22977c478bd9Sstevel@tonic-gate /* 22987c478bd9Sstevel@tonic-gate * Walk a particular ill and version. version == 0 means both v4 and v6. 22997c478bd9Sstevel@tonic-gate */ 23007c478bd9Sstevel@tonic-gate static void 23017c478bd9Sstevel@tonic-gate ire_walk_ill_ipvers(uint_t match_flags, uint_t ire_type, pfv_t func, 230245916cd2Sjpk void *arg, uchar_t vers, ill_t *ill) 23037c478bd9Sstevel@tonic-gate { 2304f4b3ec61Sdh155122 ip_stack_t *ipst = ill->ill_ipst; 2305f4b3ec61Sdh155122 23067c478bd9Sstevel@tonic-gate if (vers != IPV6_VERSION) { 23077c478bd9Sstevel@tonic-gate ire_walk_ill_tables(match_flags, ire_type, func, arg, 2308c793af95Ssangeeta IP_MASK_TABLE_SIZE, 0, 2309f4b3ec61Sdh155122 NULL, ipst->ips_ip_cache_table_size, 2310f4b3ec61Sdh155122 ipst->ips_ip_cache_table, ill, ALL_ZONES, ipst); 23117c478bd9Sstevel@tonic-gate } 23127c478bd9Sstevel@tonic-gate if (vers != IPV4_VERSION) { 23137c478bd9Sstevel@tonic-gate ire_walk_ill_tables(match_flags, ire_type, func, arg, 2314f4b3ec61Sdh155122 IP6_MASK_TABLE_SIZE, ipst->ips_ip6_ftable_hash_size, 2315f4b3ec61Sdh155122 ipst->ips_ip_forwarding_table_v6, 2316f4b3ec61Sdh155122 ipst->ips_ip6_cache_table_size, 2317f4b3ec61Sdh155122 ipst->ips_ip_cache_table_v6, ill, ALL_ZONES, ipst); 23187c478bd9Sstevel@tonic-gate } 23197c478bd9Sstevel@tonic-gate } 23207c478bd9Sstevel@tonic-gate 2321c793af95Ssangeeta boolean_t 23227c478bd9Sstevel@tonic-gate ire_walk_ill_match(uint_t match_flags, uint_t ire_type, ire_t *ire, 2323f4b3ec61Sdh155122 ill_t *ill, zoneid_t zoneid, ip_stack_t *ipst) 23247c478bd9Sstevel@tonic-gate { 23257c478bd9Sstevel@tonic-gate ill_t *ire_stq_ill = NULL; 23267c478bd9Sstevel@tonic-gate ill_t *ire_ipif_ill = NULL; 23277c478bd9Sstevel@tonic-gate ill_group_t *ire_ill_group = NULL; 23287c478bd9Sstevel@tonic-gate 23297c478bd9Sstevel@tonic-gate ASSERT(match_flags != 0 || zoneid != ALL_ZONES); 23307c478bd9Sstevel@tonic-gate /* 23317c478bd9Sstevel@tonic-gate * 1) MATCH_IRE_WQ : Used specifically to match on ire_stq. 23327c478bd9Sstevel@tonic-gate * The fast path update uses this to make sure it does not 23337c478bd9Sstevel@tonic-gate * update the fast path header of interface X with the fast 23347c478bd9Sstevel@tonic-gate * path updates it recieved on interface Y. It is similar 23357c478bd9Sstevel@tonic-gate * in handling DL_NOTE_FASTPATH_FLUSH. 23367c478bd9Sstevel@tonic-gate * 23377c478bd9Sstevel@tonic-gate * 2) MATCH_IRE_ILL/MATCH_IRE_ILL_GROUP : We match both on ill 23387c478bd9Sstevel@tonic-gate * pointed by ire_stq and ire_ipif. Only in the case of 23397c478bd9Sstevel@tonic-gate * IRE_CACHEs can ire_stq and ire_ipif be pointing to 23407c478bd9Sstevel@tonic-gate * different ills. But we want to keep this function generic 23417c478bd9Sstevel@tonic-gate * enough for future use. So, we always try to match on both. 23427c478bd9Sstevel@tonic-gate * The only caller of this function ire_walk_ill_tables, will 23437c478bd9Sstevel@tonic-gate * call "func" after we return from this function. We expect 23447c478bd9Sstevel@tonic-gate * "func" to do the right filtering of ires in this case. 23457c478bd9Sstevel@tonic-gate * 23467c478bd9Sstevel@tonic-gate * NOTE : In the case of MATCH_IRE_ILL_GROUP, groups 23477c478bd9Sstevel@tonic-gate * pointed by ire_stq and ire_ipif should always be the same. 23487c478bd9Sstevel@tonic-gate * So, we just match on only one of them. 23497c478bd9Sstevel@tonic-gate */ 23507c478bd9Sstevel@tonic-gate if (match_flags & (MATCH_IRE_ILL|MATCH_IRE_ILL_GROUP)) { 23517c478bd9Sstevel@tonic-gate if (ire->ire_stq != NULL) 23527c478bd9Sstevel@tonic-gate ire_stq_ill = (ill_t *)ire->ire_stq->q_ptr; 23537c478bd9Sstevel@tonic-gate if (ire->ire_ipif != NULL) 23547c478bd9Sstevel@tonic-gate ire_ipif_ill = ire->ire_ipif->ipif_ill; 23557c478bd9Sstevel@tonic-gate if (ire_stq_ill != NULL) 23567c478bd9Sstevel@tonic-gate ire_ill_group = ire_stq_ill->ill_group; 23577c478bd9Sstevel@tonic-gate if ((ire_ill_group == NULL) && (ire_ipif_ill != NULL)) 23587c478bd9Sstevel@tonic-gate ire_ill_group = ire_ipif_ill->ill_group; 23597c478bd9Sstevel@tonic-gate } 23607c478bd9Sstevel@tonic-gate 23617c478bd9Sstevel@tonic-gate if (zoneid != ALL_ZONES) { 23627c478bd9Sstevel@tonic-gate /* 23637c478bd9Sstevel@tonic-gate * We're walking the IREs for a specific zone. The only relevant 23647c478bd9Sstevel@tonic-gate * IREs are: 23657c478bd9Sstevel@tonic-gate * - all IREs with a matching ire_zoneid 23667c478bd9Sstevel@tonic-gate * - all IRE_OFFSUBNETs as they're shared across all zones 23677c478bd9Sstevel@tonic-gate * - IRE_INTERFACE IREs for interfaces with a usable source addr 23687c478bd9Sstevel@tonic-gate * with a matching zone 23697c478bd9Sstevel@tonic-gate * - IRE_DEFAULTs with a gateway reachable from the zone 23707c478bd9Sstevel@tonic-gate * We should really match on IRE_OFFSUBNETs and IRE_DEFAULTs 23717c478bd9Sstevel@tonic-gate * using the same rule; but the above rules are consistent with 23727c478bd9Sstevel@tonic-gate * the behavior of ire_ftable_lookup[_v6]() so that all the 23737c478bd9Sstevel@tonic-gate * routes that can be matched during lookup are also matched 23747c478bd9Sstevel@tonic-gate * here. 23757c478bd9Sstevel@tonic-gate */ 237645916cd2Sjpk if (zoneid != ire->ire_zoneid && ire->ire_zoneid != ALL_ZONES) { 23777c478bd9Sstevel@tonic-gate /* 23787c478bd9Sstevel@tonic-gate * Note, IRE_INTERFACE can have the stq as NULL. For 23797c478bd9Sstevel@tonic-gate * example, if the default multicast route is tied to 23807c478bd9Sstevel@tonic-gate * the loopback address. 23817c478bd9Sstevel@tonic-gate */ 23827c478bd9Sstevel@tonic-gate if ((ire->ire_type & IRE_INTERFACE) && 23837c478bd9Sstevel@tonic-gate (ire->ire_stq != NULL)) { 23847c478bd9Sstevel@tonic-gate ire_stq_ill = (ill_t *)ire->ire_stq->q_ptr; 23857c478bd9Sstevel@tonic-gate if (ire->ire_ipversion == IPV4_VERSION) { 23867c478bd9Sstevel@tonic-gate if (!ipif_usesrc_avail(ire_stq_ill, 23877c478bd9Sstevel@tonic-gate zoneid)) 23887c478bd9Sstevel@tonic-gate /* No usable src addr in zone */ 23897c478bd9Sstevel@tonic-gate return (B_FALSE); 23907c478bd9Sstevel@tonic-gate } else if (ire_stq_ill->ill_usesrc_ifindex 23917c478bd9Sstevel@tonic-gate != 0) { 23927c478bd9Sstevel@tonic-gate /* 23937c478bd9Sstevel@tonic-gate * For IPv6 use ipif_select_source_v6() 23947c478bd9Sstevel@tonic-gate * so the right scope selection is done 23957c478bd9Sstevel@tonic-gate */ 23967c478bd9Sstevel@tonic-gate ipif_t *src_ipif; 23977c478bd9Sstevel@tonic-gate src_ipif = 23987c478bd9Sstevel@tonic-gate ipif_select_source_v6(ire_stq_ill, 2399309fa174Srk129064 &ire->ire_addr_v6, RESTRICT_TO_NONE, 24007c478bd9Sstevel@tonic-gate IPV6_PREFER_SRC_DEFAULT, 24017c478bd9Sstevel@tonic-gate zoneid); 24027c478bd9Sstevel@tonic-gate if (src_ipif != NULL) { 24037c478bd9Sstevel@tonic-gate ipif_refrele(src_ipif); 24047c478bd9Sstevel@tonic-gate } else { 24057c478bd9Sstevel@tonic-gate return (B_FALSE); 24067c478bd9Sstevel@tonic-gate } 24077c478bd9Sstevel@tonic-gate } else { 24087c478bd9Sstevel@tonic-gate return (B_FALSE); 24097c478bd9Sstevel@tonic-gate } 24107c478bd9Sstevel@tonic-gate 24117c478bd9Sstevel@tonic-gate } else if (!(ire->ire_type & IRE_OFFSUBNET)) { 24127c478bd9Sstevel@tonic-gate return (B_FALSE); 24137c478bd9Sstevel@tonic-gate } 24147c478bd9Sstevel@tonic-gate } 24157c478bd9Sstevel@tonic-gate 24167c478bd9Sstevel@tonic-gate /* 24177c478bd9Sstevel@tonic-gate * Match all default routes from the global zone, irrespective 24185597b60aSnordmark * of reachability. For a non-global zone only match those 24195597b60aSnordmark * where ire_gateway_addr has a IRE_INTERFACE for the zoneid. 24207c478bd9Sstevel@tonic-gate */ 24217c478bd9Sstevel@tonic-gate if (ire->ire_type == IRE_DEFAULT && zoneid != GLOBAL_ZONEID) { 24227c478bd9Sstevel@tonic-gate int ire_match_flags = 0; 24237c478bd9Sstevel@tonic-gate in6_addr_t gw_addr_v6; 24247c478bd9Sstevel@tonic-gate ire_t *rire; 24257c478bd9Sstevel@tonic-gate 24265597b60aSnordmark ire_match_flags |= MATCH_IRE_TYPE; 24277c478bd9Sstevel@tonic-gate if (ire->ire_ipif != NULL) { 24287c478bd9Sstevel@tonic-gate ire_match_flags |= MATCH_IRE_ILL_GROUP; 24297c478bd9Sstevel@tonic-gate } 24307c478bd9Sstevel@tonic-gate if (ire->ire_ipversion == IPV4_VERSION) { 24317c478bd9Sstevel@tonic-gate rire = ire_route_lookup(ire->ire_gateway_addr, 24325597b60aSnordmark 0, 0, IRE_INTERFACE, ire->ire_ipif, NULL, 2433f4b3ec61Sdh155122 zoneid, NULL, ire_match_flags, ipst); 24347c478bd9Sstevel@tonic-gate } else { 24357c478bd9Sstevel@tonic-gate ASSERT(ire->ire_ipversion == IPV6_VERSION); 24367c478bd9Sstevel@tonic-gate mutex_enter(&ire->ire_lock); 24377c478bd9Sstevel@tonic-gate gw_addr_v6 = ire->ire_gateway_addr_v6; 24387c478bd9Sstevel@tonic-gate mutex_exit(&ire->ire_lock); 24397c478bd9Sstevel@tonic-gate rire = ire_route_lookup_v6(&gw_addr_v6, 24405597b60aSnordmark NULL, NULL, IRE_INTERFACE, ire->ire_ipif, 2441f4b3ec61Sdh155122 NULL, zoneid, NULL, ire_match_flags, ipst); 24427c478bd9Sstevel@tonic-gate } 24437c478bd9Sstevel@tonic-gate if (rire == NULL) { 24447c478bd9Sstevel@tonic-gate return (B_FALSE); 24457c478bd9Sstevel@tonic-gate } 24467c478bd9Sstevel@tonic-gate ire_refrele(rire); 24477c478bd9Sstevel@tonic-gate } 24487c478bd9Sstevel@tonic-gate } 24497c478bd9Sstevel@tonic-gate 24507c478bd9Sstevel@tonic-gate if (((!(match_flags & MATCH_IRE_TYPE)) || 24517c478bd9Sstevel@tonic-gate (ire->ire_type & ire_type)) && 24527c478bd9Sstevel@tonic-gate ((!(match_flags & MATCH_IRE_WQ)) || 24537c478bd9Sstevel@tonic-gate (ire->ire_stq == ill->ill_wq)) && 24547c478bd9Sstevel@tonic-gate ((!(match_flags & MATCH_IRE_ILL)) || 24557c478bd9Sstevel@tonic-gate (ire_stq_ill == ill || ire_ipif_ill == ill)) && 24567c478bd9Sstevel@tonic-gate ((!(match_flags & MATCH_IRE_ILL_GROUP)) || 24577c478bd9Sstevel@tonic-gate (ire_stq_ill == ill) || (ire_ipif_ill == ill) || 24587c478bd9Sstevel@tonic-gate (ire_ill_group != NULL && 24597c478bd9Sstevel@tonic-gate ire_ill_group == ill->ill_group))) { 24607c478bd9Sstevel@tonic-gate return (B_TRUE); 24617c478bd9Sstevel@tonic-gate } 24627c478bd9Sstevel@tonic-gate return (B_FALSE); 24637c478bd9Sstevel@tonic-gate } 24647c478bd9Sstevel@tonic-gate 2465c793af95Ssangeeta int 2466c793af95Ssangeeta rtfunc(struct radix_node *rn, void *arg) 2467c793af95Ssangeeta { 2468c793af95Ssangeeta struct rtfuncarg *rtf = arg; 2469c793af95Ssangeeta struct rt_entry *rt; 2470c793af95Ssangeeta irb_t *irb; 2471c793af95Ssangeeta ire_t *ire; 2472c793af95Ssangeeta boolean_t ret; 2473c793af95Ssangeeta 2474c793af95Ssangeeta rt = (struct rt_entry *)rn; 2475c793af95Ssangeeta ASSERT(rt != NULL); 2476c793af95Ssangeeta irb = &rt->rt_irb; 2477c793af95Ssangeeta for (ire = irb->irb_ire; ire != NULL; ire = ire->ire_next) { 2478c793af95Ssangeeta if ((rtf->rt_match_flags != 0) || 2479c793af95Ssangeeta (rtf->rt_zoneid != ALL_ZONES)) { 2480c793af95Ssangeeta ret = ire_walk_ill_match(rtf->rt_match_flags, 2481c793af95Ssangeeta rtf->rt_ire_type, ire, 2482f4b3ec61Sdh155122 rtf->rt_ill, rtf->rt_zoneid, rtf->rt_ipst); 2483c793af95Ssangeeta } else 2484c793af95Ssangeeta ret = B_TRUE; 2485c793af95Ssangeeta if (ret) 2486c793af95Ssangeeta (*rtf->rt_func)(ire, rtf->rt_arg); 2487c793af95Ssangeeta } 2488c793af95Ssangeeta return (0); 2489c793af95Ssangeeta } 2490c793af95Ssangeeta 24917c478bd9Sstevel@tonic-gate /* 24927c478bd9Sstevel@tonic-gate * Walk the ftable and the ctable entries that match the ill. 24937c478bd9Sstevel@tonic-gate */ 2494c793af95Ssangeeta void 24957c478bd9Sstevel@tonic-gate ire_walk_ill_tables(uint_t match_flags, uint_t ire_type, pfv_t func, 249645916cd2Sjpk void *arg, size_t ftbl_sz, size_t htbl_sz, irb_t **ipftbl, 2497f4b3ec61Sdh155122 size_t ctbl_sz, irb_t *ipctbl, ill_t *ill, zoneid_t zoneid, 2498f4b3ec61Sdh155122 ip_stack_t *ipst) 24997c478bd9Sstevel@tonic-gate { 25007c478bd9Sstevel@tonic-gate irb_t *irb_ptr; 25017c478bd9Sstevel@tonic-gate irb_t *irb; 25027c478bd9Sstevel@tonic-gate ire_t *ire; 25037c478bd9Sstevel@tonic-gate int i, j; 25047c478bd9Sstevel@tonic-gate boolean_t ret; 2505c793af95Ssangeeta struct rtfuncarg rtfarg; 25067c478bd9Sstevel@tonic-gate 25077c478bd9Sstevel@tonic-gate ASSERT((!(match_flags & (MATCH_IRE_WQ | MATCH_IRE_ILL | 25087c478bd9Sstevel@tonic-gate MATCH_IRE_ILL_GROUP))) || (ill != NULL)); 25097c478bd9Sstevel@tonic-gate ASSERT(!(match_flags & MATCH_IRE_TYPE) || (ire_type != 0)); 25107c478bd9Sstevel@tonic-gate /* 25117c478bd9Sstevel@tonic-gate * Optimize by not looking at the forwarding table if there 25127c478bd9Sstevel@tonic-gate * is a MATCH_IRE_TYPE specified with no IRE_FORWARDTABLE 25137c478bd9Sstevel@tonic-gate * specified in ire_type. 25147c478bd9Sstevel@tonic-gate */ 25157c478bd9Sstevel@tonic-gate if (!(match_flags & MATCH_IRE_TYPE) || 25167c478bd9Sstevel@tonic-gate ((ire_type & IRE_FORWARDTABLE) != 0)) { 2517c793af95Ssangeeta /* knobs such that routine is called only for v6 case */ 2518f4b3ec61Sdh155122 if (ipftbl == ipst->ips_ip_forwarding_table_v6) { 25197c478bd9Sstevel@tonic-gate for (i = (ftbl_sz - 1); i >= 0; i--) { 25207c478bd9Sstevel@tonic-gate if ((irb_ptr = ipftbl[i]) == NULL) 25217c478bd9Sstevel@tonic-gate continue; 25227c478bd9Sstevel@tonic-gate for (j = 0; j < htbl_sz; j++) { 25237c478bd9Sstevel@tonic-gate irb = &irb_ptr[j]; 25247c478bd9Sstevel@tonic-gate if (irb->irb_ire == NULL) 25257c478bd9Sstevel@tonic-gate continue; 2526c793af95Ssangeeta 25277c478bd9Sstevel@tonic-gate IRB_REFHOLD(irb); 25287c478bd9Sstevel@tonic-gate for (ire = irb->irb_ire; ire != NULL; 25297c478bd9Sstevel@tonic-gate ire = ire->ire_next) { 25307c478bd9Sstevel@tonic-gate if (match_flags == 0 && 25317c478bd9Sstevel@tonic-gate zoneid == ALL_ZONES) { 25327c478bd9Sstevel@tonic-gate ret = B_TRUE; 25337c478bd9Sstevel@tonic-gate } else { 2534c793af95Ssangeeta ret = 2535c793af95Ssangeeta ire_walk_ill_match( 2536c793af95Ssangeeta match_flags, 2537c793af95Ssangeeta ire_type, ire, ill, 2538f4b3ec61Sdh155122 zoneid, ipst); 25397c478bd9Sstevel@tonic-gate } 25407c478bd9Sstevel@tonic-gate if (ret) 25417c478bd9Sstevel@tonic-gate (*func)(ire, arg); 25427c478bd9Sstevel@tonic-gate } 25437c478bd9Sstevel@tonic-gate IRB_REFRELE(irb); 25447c478bd9Sstevel@tonic-gate } 25457c478bd9Sstevel@tonic-gate } 2546c793af95Ssangeeta } else { 2547c793af95Ssangeeta (void) memset(&rtfarg, 0, sizeof (rtfarg)); 2548c793af95Ssangeeta rtfarg.rt_func = func; 2549c793af95Ssangeeta rtfarg.rt_arg = arg; 2550c793af95Ssangeeta if (match_flags != 0) { 2551c793af95Ssangeeta rtfarg.rt_match_flags = match_flags; 2552c793af95Ssangeeta } 2553c793af95Ssangeeta rtfarg.rt_ire_type = ire_type; 2554c793af95Ssangeeta rtfarg.rt_ill = ill; 2555c793af95Ssangeeta rtfarg.rt_zoneid = zoneid; 2556f4b3ec61Sdh155122 rtfarg.rt_ipst = ipst; /* No netstack_hold */ 2557f4b3ec61Sdh155122 (void) ipst->ips_ip_ftable->rnh_walktree_mt( 2558f4b3ec61Sdh155122 ipst->ips_ip_ftable, 2559f4b3ec61Sdh155122 rtfunc, &rtfarg, irb_refhold_rn, irb_refrele_rn); 2560c793af95Ssangeeta } 25617c478bd9Sstevel@tonic-gate } 25627c478bd9Sstevel@tonic-gate 25637c478bd9Sstevel@tonic-gate /* 25647c478bd9Sstevel@tonic-gate * Optimize by not looking at the cache table if there 25657c478bd9Sstevel@tonic-gate * is a MATCH_IRE_TYPE specified with no IRE_CACHETABLE 25667c478bd9Sstevel@tonic-gate * specified in ire_type. 25677c478bd9Sstevel@tonic-gate */ 25687c478bd9Sstevel@tonic-gate if (!(match_flags & MATCH_IRE_TYPE) || 25697c478bd9Sstevel@tonic-gate ((ire_type & IRE_CACHETABLE) != 0)) { 25707c478bd9Sstevel@tonic-gate for (i = 0; i < ctbl_sz; i++) { 25717c478bd9Sstevel@tonic-gate irb = &ipctbl[i]; 25727c478bd9Sstevel@tonic-gate if (irb->irb_ire == NULL) 25737c478bd9Sstevel@tonic-gate continue; 25747c478bd9Sstevel@tonic-gate IRB_REFHOLD(irb); 25757c478bd9Sstevel@tonic-gate for (ire = irb->irb_ire; ire != NULL; 25767c478bd9Sstevel@tonic-gate ire = ire->ire_next) { 25777c478bd9Sstevel@tonic-gate if (match_flags == 0 && zoneid == ALL_ZONES) { 25787c478bd9Sstevel@tonic-gate ret = B_TRUE; 25797c478bd9Sstevel@tonic-gate } else { 25807c478bd9Sstevel@tonic-gate ret = ire_walk_ill_match( 25817c478bd9Sstevel@tonic-gate match_flags, ire_type, 2582f4b3ec61Sdh155122 ire, ill, zoneid, ipst); 25837c478bd9Sstevel@tonic-gate } 25847c478bd9Sstevel@tonic-gate if (ret) 25857c478bd9Sstevel@tonic-gate (*func)(ire, arg); 25867c478bd9Sstevel@tonic-gate } 25877c478bd9Sstevel@tonic-gate IRB_REFRELE(irb); 25887c478bd9Sstevel@tonic-gate } 25897c478bd9Sstevel@tonic-gate } 25907c478bd9Sstevel@tonic-gate } 25917c478bd9Sstevel@tonic-gate 25927c478bd9Sstevel@tonic-gate /* 25937c478bd9Sstevel@tonic-gate * This routine walks through the ill chain to find if there is any 25947c478bd9Sstevel@tonic-gate * ire linked to the ill's interface based forwarding table 25957c478bd9Sstevel@tonic-gate * The arg could be ill or mp. This routine is called when a ill goes 25967c478bd9Sstevel@tonic-gate * down/deleted or the 'ipv4_ire_srcif_status' report is printed. 25977c478bd9Sstevel@tonic-gate */ 25987c478bd9Sstevel@tonic-gate void 2599f4b3ec61Sdh155122 ire_walk_srcif_table_v4(pfv_t func, void *arg, ip_stack_t *ipst) 26007c478bd9Sstevel@tonic-gate { 26017c478bd9Sstevel@tonic-gate irb_t *irb; 26027c478bd9Sstevel@tonic-gate ire_t *ire; 26037c478bd9Sstevel@tonic-gate ill_t *ill, *next_ill; 26047c478bd9Sstevel@tonic-gate int i; 26057c478bd9Sstevel@tonic-gate int total_count; 26067c478bd9Sstevel@tonic-gate ill_walk_context_t ctx; 26077c478bd9Sstevel@tonic-gate 26087c478bd9Sstevel@tonic-gate /* 26097c478bd9Sstevel@tonic-gate * Take care of ire's in other ill's per-interface forwarding 26107c478bd9Sstevel@tonic-gate * table. Check if any ire in any of the ill's ill_srcif_table 26117c478bd9Sstevel@tonic-gate * is pointing to this ill. 26127c478bd9Sstevel@tonic-gate */ 2613f4b3ec61Sdh155122 mutex_enter(&ipst->ips_ire_srcif_table_lock); 2614f4b3ec61Sdh155122 if (ipst->ips_ire_srcif_table_count == 0) { 2615f4b3ec61Sdh155122 mutex_exit(&ipst->ips_ire_srcif_table_lock); 26167c478bd9Sstevel@tonic-gate return; 26177c478bd9Sstevel@tonic-gate } 2618f4b3ec61Sdh155122 mutex_exit(&ipst->ips_ire_srcif_table_lock); 26197c478bd9Sstevel@tonic-gate 26207c478bd9Sstevel@tonic-gate #ifdef DEBUG 26217c478bd9Sstevel@tonic-gate /* Keep accounting of all interface based table ires */ 26227c478bd9Sstevel@tonic-gate total_count = 0; 2623f4b3ec61Sdh155122 rw_enter(&ipst->ips_ill_g_lock, RW_READER); 2624f4b3ec61Sdh155122 ill = ILL_START_WALK_V4(&ctx, ipst); 26257c478bd9Sstevel@tonic-gate while (ill != NULL) { 26267c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 26277c478bd9Sstevel@tonic-gate total_count += ill->ill_srcif_refcnt; 26287c478bd9Sstevel@tonic-gate next_ill = ill_next(&ctx, ill); 26297c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 26307c478bd9Sstevel@tonic-gate ill = next_ill; 26317c478bd9Sstevel@tonic-gate } 2632f4b3ec61Sdh155122 rw_exit(&ipst->ips_ill_g_lock); 26337c478bd9Sstevel@tonic-gate 26347c478bd9Sstevel@tonic-gate /* Hold lock here to make sure ire_srcif_table_count is stable */ 2635f4b3ec61Sdh155122 mutex_enter(&ipst->ips_ire_srcif_table_lock); 2636f4b3ec61Sdh155122 i = ipst->ips_ire_srcif_table_count; 2637f4b3ec61Sdh155122 mutex_exit(&ipst->ips_ire_srcif_table_lock); 26387c478bd9Sstevel@tonic-gate ip1dbg(("ire_walk_srcif_v4: ire_srcif_table_count %d " 26397c478bd9Sstevel@tonic-gate "total ill_srcif_refcnt %d\n", i, total_count)); 26407c478bd9Sstevel@tonic-gate #endif 2641f4b3ec61Sdh155122 rw_enter(&ipst->ips_ill_g_lock, RW_READER); 2642f4b3ec61Sdh155122 ill = ILL_START_WALK_V4(&ctx, ipst); 26437c478bd9Sstevel@tonic-gate while (ill != NULL) { 26447c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 26457c478bd9Sstevel@tonic-gate if ((ill->ill_srcif_refcnt == 0) || !ILL_CAN_LOOKUP(ill)) { 26467c478bd9Sstevel@tonic-gate next_ill = ill_next(&ctx, ill); 26477c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 26487c478bd9Sstevel@tonic-gate ill = next_ill; 26497c478bd9Sstevel@tonic-gate continue; 26507c478bd9Sstevel@tonic-gate } 26517c478bd9Sstevel@tonic-gate ill_refhold_locked(ill); 26527c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 2653f4b3ec61Sdh155122 rw_exit(&ipst->ips_ill_g_lock); 26547c478bd9Sstevel@tonic-gate if (ill->ill_srcif_table != NULL) { 26557c478bd9Sstevel@tonic-gate for (i = 0; i < IP_SRCIF_TABLE_SIZE; i++) { 26567c478bd9Sstevel@tonic-gate irb = &(ill->ill_srcif_table[i]); 26577c478bd9Sstevel@tonic-gate if (irb->irb_ire == NULL) 26587c478bd9Sstevel@tonic-gate continue; 26597c478bd9Sstevel@tonic-gate IRB_REFHOLD(irb); 26607c478bd9Sstevel@tonic-gate for (ire = irb->irb_ire; ire != NULL; 26617c478bd9Sstevel@tonic-gate ire = ire->ire_next) { 26627c478bd9Sstevel@tonic-gate (*func)(ire, arg); 26637c478bd9Sstevel@tonic-gate } 26647c478bd9Sstevel@tonic-gate IRB_REFRELE(irb); 26657c478bd9Sstevel@tonic-gate } 26667c478bd9Sstevel@tonic-gate } 2667f4b3ec61Sdh155122 rw_enter(&ipst->ips_ill_g_lock, RW_READER); 26687c478bd9Sstevel@tonic-gate next_ill = ill_next(&ctx, ill); 26697c478bd9Sstevel@tonic-gate ill_refrele(ill); 26707c478bd9Sstevel@tonic-gate ill = next_ill; 26717c478bd9Sstevel@tonic-gate } 2672f4b3ec61Sdh155122 rw_exit(&ipst->ips_ill_g_lock); 26737c478bd9Sstevel@tonic-gate } 26747c478bd9Sstevel@tonic-gate 26757c478bd9Sstevel@tonic-gate /* 26767c478bd9Sstevel@tonic-gate * This function takes a mask and returns 26777c478bd9Sstevel@tonic-gate * number of bits set in the mask. If no 26787c478bd9Sstevel@tonic-gate * bit is set it returns 0. 26797c478bd9Sstevel@tonic-gate * Assumes a contiguous mask. 26807c478bd9Sstevel@tonic-gate */ 26817c478bd9Sstevel@tonic-gate int 26827c478bd9Sstevel@tonic-gate ip_mask_to_plen(ipaddr_t mask) 26837c478bd9Sstevel@tonic-gate { 26847c478bd9Sstevel@tonic-gate return (mask == 0 ? 0 : IP_ABITS - (ffs(ntohl(mask)) -1)); 26857c478bd9Sstevel@tonic-gate } 26867c478bd9Sstevel@tonic-gate 26877c478bd9Sstevel@tonic-gate /* 26887c478bd9Sstevel@tonic-gate * Convert length for a mask to the mask. 26897c478bd9Sstevel@tonic-gate */ 26907c478bd9Sstevel@tonic-gate ipaddr_t 26917c478bd9Sstevel@tonic-gate ip_plen_to_mask(uint_t masklen) 26927c478bd9Sstevel@tonic-gate { 26937c478bd9Sstevel@tonic-gate return (htonl(IP_HOST_MASK << (IP_ABITS - masklen))); 26947c478bd9Sstevel@tonic-gate } 26957c478bd9Sstevel@tonic-gate 26967c478bd9Sstevel@tonic-gate void 26977c478bd9Sstevel@tonic-gate ire_atomic_end(irb_t *irb_ptr, ire_t *ire) 26987c478bd9Sstevel@tonic-gate { 26997c478bd9Sstevel@tonic-gate ill_t *ill_list[NUM_ILLS]; 2700f4b3ec61Sdh155122 ip_stack_t *ipst = ire->ire_ipst; 27017c478bd9Sstevel@tonic-gate 27027c478bd9Sstevel@tonic-gate ill_list[0] = ire->ire_stq != NULL ? ire->ire_stq->q_ptr : NULL; 27037c478bd9Sstevel@tonic-gate ill_list[1] = ire->ire_ipif != NULL ? ire->ire_ipif->ipif_ill : NULL; 27047c478bd9Sstevel@tonic-gate ill_list[2] = ire->ire_in_ill; 27057c478bd9Sstevel@tonic-gate ill_unlock_ills(ill_list, NUM_ILLS); 27067c478bd9Sstevel@tonic-gate rw_exit(&irb_ptr->irb_lock); 2707f4b3ec61Sdh155122 rw_exit(&ipst->ips_ill_g_usesrc_lock); 27087c478bd9Sstevel@tonic-gate } 27097c478bd9Sstevel@tonic-gate 27107c478bd9Sstevel@tonic-gate /* 27117c478bd9Sstevel@tonic-gate * ire_add_v[46] atomically make sure that the ipif or ill associated 27127c478bd9Sstevel@tonic-gate * with the new ire being added is stable and not IPIF_CHANGING or ILL_CHANGING 27137c478bd9Sstevel@tonic-gate * before adding the ire to the table. This ensures that we don't create 27147c478bd9Sstevel@tonic-gate * new IRE_CACHEs with stale values for parameters that are passed to 27157c478bd9Sstevel@tonic-gate * ire_create such as ire_max_frag. Note that ire_create() is passed a pointer 27167c478bd9Sstevel@tonic-gate * to the ipif_mtu, and not the value. The actual value is derived from the 27177c478bd9Sstevel@tonic-gate * parent ire or ipif under the bucket lock. 27187c478bd9Sstevel@tonic-gate */ 27197c478bd9Sstevel@tonic-gate int 27207c478bd9Sstevel@tonic-gate ire_atomic_start(irb_t *irb_ptr, ire_t *ire, queue_t *q, mblk_t *mp, 27217c478bd9Sstevel@tonic-gate ipsq_func_t func) 27227c478bd9Sstevel@tonic-gate { 27237c478bd9Sstevel@tonic-gate ill_t *stq_ill; 27247c478bd9Sstevel@tonic-gate ill_t *ipif_ill; 27257c478bd9Sstevel@tonic-gate ill_t *in_ill; 27267c478bd9Sstevel@tonic-gate ill_t *ill_list[NUM_ILLS]; 27277c478bd9Sstevel@tonic-gate int cnt = NUM_ILLS; 27287c478bd9Sstevel@tonic-gate int error = 0; 27297c478bd9Sstevel@tonic-gate ill_t *ill = NULL; 2730f4b3ec61Sdh155122 ip_stack_t *ipst = ire->ire_ipst; 27317c478bd9Sstevel@tonic-gate 27327c478bd9Sstevel@tonic-gate ill_list[0] = stq_ill = ire->ire_stq != 27337c478bd9Sstevel@tonic-gate NULL ? ire->ire_stq->q_ptr : NULL; 27347c478bd9Sstevel@tonic-gate ill_list[1] = ipif_ill = ire->ire_ipif != 27357c478bd9Sstevel@tonic-gate NULL ? ire->ire_ipif->ipif_ill : NULL; 27367c478bd9Sstevel@tonic-gate ill_list[2] = in_ill = ire->ire_in_ill; 27377c478bd9Sstevel@tonic-gate 27387c478bd9Sstevel@tonic-gate ASSERT((q != NULL && mp != NULL && func != NULL) || 27397c478bd9Sstevel@tonic-gate (q == NULL && mp == NULL && func == NULL)); 2740f4b3ec61Sdh155122 rw_enter(&ipst->ips_ill_g_usesrc_lock, RW_READER); 27417c478bd9Sstevel@tonic-gate GRAB_CONN_LOCK(q); 27427c478bd9Sstevel@tonic-gate rw_enter(&irb_ptr->irb_lock, RW_WRITER); 27437c478bd9Sstevel@tonic-gate ill_lock_ills(ill_list, cnt); 27447c478bd9Sstevel@tonic-gate 27457c478bd9Sstevel@tonic-gate /* 27467c478bd9Sstevel@tonic-gate * While the IRE is in the process of being added, a user may have 27477c478bd9Sstevel@tonic-gate * invoked the ifconfig usesrc option on the stq_ill to make it a 27487c478bd9Sstevel@tonic-gate * usesrc client ILL. Check for this possibility here, if it is true 27497c478bd9Sstevel@tonic-gate * then we fail adding the IRE_CACHE. Another check is to make sure 27507c478bd9Sstevel@tonic-gate * that an ipif_ill of an IRE_CACHE being added is not part of a usesrc 27517c478bd9Sstevel@tonic-gate * group. The ill_g_usesrc_lock is released in ire_atomic_end 27527c478bd9Sstevel@tonic-gate */ 27537c478bd9Sstevel@tonic-gate if ((ire->ire_type & IRE_CACHE) && 27547c478bd9Sstevel@tonic-gate (ire->ire_marks & IRE_MARK_USESRC_CHECK)) { 27557c478bd9Sstevel@tonic-gate if (stq_ill->ill_usesrc_ifindex != 0) { 27567c478bd9Sstevel@tonic-gate ASSERT(stq_ill->ill_usesrc_grp_next != NULL); 27577c478bd9Sstevel@tonic-gate if ((ipif_ill->ill_phyint->phyint_ifindex != 27587c478bd9Sstevel@tonic-gate stq_ill->ill_usesrc_ifindex) || 27597c478bd9Sstevel@tonic-gate (ipif_ill->ill_usesrc_grp_next == NULL) || 27607c478bd9Sstevel@tonic-gate (ipif_ill->ill_usesrc_ifindex != 0)) { 27617c478bd9Sstevel@tonic-gate error = EINVAL; 27627c478bd9Sstevel@tonic-gate goto done; 27637c478bd9Sstevel@tonic-gate } 27647c478bd9Sstevel@tonic-gate } else if (ipif_ill->ill_usesrc_grp_next != NULL) { 27657c478bd9Sstevel@tonic-gate error = EINVAL; 27667c478bd9Sstevel@tonic-gate goto done; 27677c478bd9Sstevel@tonic-gate } 27687c478bd9Sstevel@tonic-gate } 27697c478bd9Sstevel@tonic-gate 27707c478bd9Sstevel@tonic-gate /* 27717c478bd9Sstevel@tonic-gate * IPMP flag settings happen without taking the exclusive route 27727c478bd9Sstevel@tonic-gate * in ip_sioctl_flags. So we need to make an atomic check here 27737c478bd9Sstevel@tonic-gate * for FAILED/OFFLINE/INACTIVE flags or if it has hit the 27747c478bd9Sstevel@tonic-gate * FAILBACK=no case. 27757c478bd9Sstevel@tonic-gate */ 27767c478bd9Sstevel@tonic-gate if ((stq_ill != NULL) && !IAM_WRITER_ILL(stq_ill)) { 27777c478bd9Sstevel@tonic-gate if (stq_ill->ill_state_flags & ILL_CHANGING) { 27787c478bd9Sstevel@tonic-gate ill = stq_ill; 27797c478bd9Sstevel@tonic-gate error = EAGAIN; 27807c478bd9Sstevel@tonic-gate } else if ((stq_ill->ill_phyint->phyint_flags & PHYI_OFFLINE) || 27817c478bd9Sstevel@tonic-gate (ill_is_probeonly(stq_ill) && 27827c478bd9Sstevel@tonic-gate !(ire->ire_marks & IRE_MARK_HIDDEN))) { 27837c478bd9Sstevel@tonic-gate error = EINVAL; 27847c478bd9Sstevel@tonic-gate } 27857c478bd9Sstevel@tonic-gate goto done; 27867c478bd9Sstevel@tonic-gate } 27877c478bd9Sstevel@tonic-gate 27887c478bd9Sstevel@tonic-gate /* 27897c478bd9Sstevel@tonic-gate * We don't check for OFFLINE/FAILED in this case because 27907c478bd9Sstevel@tonic-gate * the source address selection logic (ipif_select_source) 27917c478bd9Sstevel@tonic-gate * may still select a source address from such an ill. The 27927c478bd9Sstevel@tonic-gate * assumption is that these addresses will be moved by in.mpathd 27937c478bd9Sstevel@tonic-gate * soon. (i.e. this is a race). However link local addresses 27947c478bd9Sstevel@tonic-gate * will not move and hence ipif_select_source_v6 tries to avoid 27957c478bd9Sstevel@tonic-gate * FAILED ills. Please see ipif_select_source_v6 for more info 27967c478bd9Sstevel@tonic-gate */ 27977c478bd9Sstevel@tonic-gate if ((ipif_ill != NULL) && !IAM_WRITER_ILL(ipif_ill) && 27987c478bd9Sstevel@tonic-gate (ipif_ill->ill_state_flags & ILL_CHANGING)) { 27997c478bd9Sstevel@tonic-gate ill = ipif_ill; 28007c478bd9Sstevel@tonic-gate error = EAGAIN; 28017c478bd9Sstevel@tonic-gate goto done; 28027c478bd9Sstevel@tonic-gate } 28037c478bd9Sstevel@tonic-gate 28047c478bd9Sstevel@tonic-gate if ((in_ill != NULL) && !IAM_WRITER_ILL(in_ill) && 28057c478bd9Sstevel@tonic-gate (in_ill->ill_state_flags & ILL_CHANGING)) { 28067c478bd9Sstevel@tonic-gate ill = in_ill; 28077c478bd9Sstevel@tonic-gate error = EAGAIN; 28087c478bd9Sstevel@tonic-gate goto done; 28097c478bd9Sstevel@tonic-gate } 28107c478bd9Sstevel@tonic-gate 28117c478bd9Sstevel@tonic-gate if ((ire->ire_ipif != NULL) && !IAM_WRITER_IPIF(ire->ire_ipif) && 28127c478bd9Sstevel@tonic-gate (ire->ire_ipif->ipif_state_flags & IPIF_CHANGING)) { 28137c478bd9Sstevel@tonic-gate ill = ire->ire_ipif->ipif_ill; 28147c478bd9Sstevel@tonic-gate ASSERT(ill != NULL); 28157c478bd9Sstevel@tonic-gate error = EAGAIN; 28167c478bd9Sstevel@tonic-gate goto done; 28177c478bd9Sstevel@tonic-gate } 28187c478bd9Sstevel@tonic-gate 28197c478bd9Sstevel@tonic-gate done: 28207c478bd9Sstevel@tonic-gate if (error == EAGAIN && ILL_CAN_WAIT(ill, q)) { 28217c478bd9Sstevel@tonic-gate ipsq_t *ipsq = ill->ill_phyint->phyint_ipsq; 28227c478bd9Sstevel@tonic-gate mutex_enter(&ipsq->ipsq_lock); 28237c478bd9Sstevel@tonic-gate ire_atomic_end(irb_ptr, ire); 28247c478bd9Sstevel@tonic-gate ipsq_enq(ipsq, q, mp, func, NEW_OP, ill); 28257c478bd9Sstevel@tonic-gate mutex_exit(&ipsq->ipsq_lock); 28267c478bd9Sstevel@tonic-gate error = EINPROGRESS; 28277c478bd9Sstevel@tonic-gate } else if (error != 0) { 28287c478bd9Sstevel@tonic-gate ire_atomic_end(irb_ptr, ire); 28297c478bd9Sstevel@tonic-gate } 28307c478bd9Sstevel@tonic-gate 28317c478bd9Sstevel@tonic-gate RELEASE_CONN_LOCK(q); 28327c478bd9Sstevel@tonic-gate return (error); 28337c478bd9Sstevel@tonic-gate } 28347c478bd9Sstevel@tonic-gate 28357c478bd9Sstevel@tonic-gate /* 28367c478bd9Sstevel@tonic-gate * Add a fully initialized IRE to an appropriate table based on 28377c478bd9Sstevel@tonic-gate * ire_type. 2838c793af95Ssangeeta * 2839c793af95Ssangeeta * allow_unresolved == B_FALSE indicates a legacy code-path call 2840c793af95Ssangeeta * that has prohibited the addition of incomplete ire's. If this 2841c793af95Ssangeeta * parameter is set, and we find an nce that is in a state other 2842c793af95Ssangeeta * than ND_REACHABLE, we fail the add. Note that nce_state could be 2843b9c344b3Ssowmini * something other than ND_REACHABLE if the nce had just expired and 2844b9c344b3Ssowmini * the ire_create preceding the ire_add added a new ND_INITIAL nce. 28457c478bd9Sstevel@tonic-gate */ 28467c478bd9Sstevel@tonic-gate int 2847c793af95Ssangeeta ire_add(ire_t **irep, queue_t *q, mblk_t *mp, ipsq_func_t func, 2848c793af95Ssangeeta boolean_t allow_unresolved) 28497c478bd9Sstevel@tonic-gate { 28507c478bd9Sstevel@tonic-gate ire_t *ire1; 28517c478bd9Sstevel@tonic-gate ill_t *stq_ill = NULL; 28527c478bd9Sstevel@tonic-gate ill_t *ill; 28537c478bd9Sstevel@tonic-gate ipif_t *ipif = NULL; 28547c478bd9Sstevel@tonic-gate ill_walk_context_t ctx; 28557c478bd9Sstevel@tonic-gate ire_t *ire = *irep; 28567c478bd9Sstevel@tonic-gate int error; 2857dc3879f9Sjarrett boolean_t ire_is_mblk = B_FALSE; 2858dc3879f9Sjarrett tsol_gcgrp_t *gcgrp = NULL; 2859dc3879f9Sjarrett tsol_gcgrp_addr_t ga; 2860f4b3ec61Sdh155122 ip_stack_t *ipst = ire->ire_ipst; 28617c478bd9Sstevel@tonic-gate 28627c478bd9Sstevel@tonic-gate ASSERT(ire->ire_type != IRE_MIPRTUN); 28637c478bd9Sstevel@tonic-gate 28647c478bd9Sstevel@tonic-gate /* get ready for the day when original ire is not created as mblk */ 28657c478bd9Sstevel@tonic-gate if (ire->ire_mp != NULL) { 2866dc3879f9Sjarrett ire_is_mblk = B_TRUE; 28677c478bd9Sstevel@tonic-gate /* Copy the ire to a kmem_alloc'ed area */ 28687c478bd9Sstevel@tonic-gate ire1 = kmem_cache_alloc(ire_cache, KM_NOSLEEP); 28697c478bd9Sstevel@tonic-gate if (ire1 == NULL) { 28707c478bd9Sstevel@tonic-gate ip1dbg(("ire_add: alloc failed\n")); 28717c478bd9Sstevel@tonic-gate ire_delete(ire); 28727c478bd9Sstevel@tonic-gate *irep = NULL; 28737c478bd9Sstevel@tonic-gate return (ENOMEM); 28747c478bd9Sstevel@tonic-gate } 2875c793af95Ssangeeta ire->ire_marks &= ~IRE_MARK_UNCACHED; 28767c478bd9Sstevel@tonic-gate *ire1 = *ire; 28777c478bd9Sstevel@tonic-gate ire1->ire_mp = NULL; 2878c793af95Ssangeeta ire1->ire_stq_ifindex = 0; 28797c478bd9Sstevel@tonic-gate freeb(ire->ire_mp); 28807c478bd9Sstevel@tonic-gate ire = ire1; 28817c478bd9Sstevel@tonic-gate } 28827c478bd9Sstevel@tonic-gate if (ire->ire_stq != NULL) 28837c478bd9Sstevel@tonic-gate stq_ill = (ill_t *)ire->ire_stq->q_ptr; 28847c478bd9Sstevel@tonic-gate 28857c478bd9Sstevel@tonic-gate if (ire->ire_type == IRE_CACHE) { 28867c478bd9Sstevel@tonic-gate /* 28877c478bd9Sstevel@tonic-gate * If this interface is FAILED, or INACTIVE or has hit 28887c478bd9Sstevel@tonic-gate * the FAILBACK=no case, we create IRE_CACHES marked 28897c478bd9Sstevel@tonic-gate * HIDDEN for some special cases e.g. bind to 28907c478bd9Sstevel@tonic-gate * IPIF_NOFAILOVER address etc. So, if this interface 28917c478bd9Sstevel@tonic-gate * is FAILED/INACTIVE/hit FAILBACK=no case, and we are 28927c478bd9Sstevel@tonic-gate * not creating hidden ires, we should not allow that. 28937c478bd9Sstevel@tonic-gate * This happens because the state of the interface 28947c478bd9Sstevel@tonic-gate * changed while we were waiting in ARP. If this is the 28957c478bd9Sstevel@tonic-gate * daemon sending probes, the next probe will create 28967c478bd9Sstevel@tonic-gate * HIDDEN ires and we will create an ire then. This 28977c478bd9Sstevel@tonic-gate * cannot happen with NDP currently because IRE is 28987c478bd9Sstevel@tonic-gate * never queued in NDP. But it can happen in the 28997c478bd9Sstevel@tonic-gate * future when we have external resolvers with IPv6. 29007c478bd9Sstevel@tonic-gate * If the interface gets marked with OFFLINE while we 29017c478bd9Sstevel@tonic-gate * are waiting in ARP, don't add the ire. 29027c478bd9Sstevel@tonic-gate */ 29037c478bd9Sstevel@tonic-gate if ((stq_ill->ill_phyint->phyint_flags & PHYI_OFFLINE) || 29047c478bd9Sstevel@tonic-gate (ill_is_probeonly(stq_ill) && 29057c478bd9Sstevel@tonic-gate !(ire->ire_marks & IRE_MARK_HIDDEN))) { 29067c478bd9Sstevel@tonic-gate /* 29077c478bd9Sstevel@tonic-gate * We don't know whether it is a valid ipif or not. 29087c478bd9Sstevel@tonic-gate * unless we do the check below. So, set it to NULL. 29097c478bd9Sstevel@tonic-gate */ 29107c478bd9Sstevel@tonic-gate ire->ire_ipif = NULL; 29117c478bd9Sstevel@tonic-gate ire_delete(ire); 29127c478bd9Sstevel@tonic-gate *irep = NULL; 29137c478bd9Sstevel@tonic-gate return (EINVAL); 29147c478bd9Sstevel@tonic-gate } 29157c478bd9Sstevel@tonic-gate } 29167c478bd9Sstevel@tonic-gate 29177c478bd9Sstevel@tonic-gate if (stq_ill != NULL && ire->ire_type == IRE_CACHE && 29187c478bd9Sstevel@tonic-gate stq_ill->ill_net_type == IRE_IF_RESOLVER) { 2919f4b3ec61Sdh155122 rw_enter(&ipst->ips_ill_g_lock, RW_READER); 2920f4b3ec61Sdh155122 ill = ILL_START_WALK_ALL(&ctx, ipst); 29217c478bd9Sstevel@tonic-gate for (; ill != NULL; ill = ill_next(&ctx, ill)) { 29227c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 29237c478bd9Sstevel@tonic-gate if (ill->ill_state_flags & ILL_CONDEMNED) { 29247c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 29257c478bd9Sstevel@tonic-gate continue; 29267c478bd9Sstevel@tonic-gate } 29277c478bd9Sstevel@tonic-gate /* 29287c478bd9Sstevel@tonic-gate * We need to make sure that the ipif is a valid one 29297c478bd9Sstevel@tonic-gate * before adding the IRE_CACHE. This happens only 29307c478bd9Sstevel@tonic-gate * with IRE_CACHE when there is an external resolver. 29317c478bd9Sstevel@tonic-gate * 29327c478bd9Sstevel@tonic-gate * We can unplumb a logical interface while the 29337c478bd9Sstevel@tonic-gate * packet is waiting in ARP with the IRE. Then, 29347c478bd9Sstevel@tonic-gate * later on when we feed the IRE back, the ipif 29357c478bd9Sstevel@tonic-gate * has to be re-checked. This can't happen with 29367c478bd9Sstevel@tonic-gate * NDP currently, as we never queue the IRE with 29377c478bd9Sstevel@tonic-gate * the packet. We always try to recreate the IRE 29387c478bd9Sstevel@tonic-gate * when the resolution is completed. But, we do 29397c478bd9Sstevel@tonic-gate * it for IPv6 also here so that in future if 29407c478bd9Sstevel@tonic-gate * we have external resolvers, it will work without 29417c478bd9Sstevel@tonic-gate * any change. 29427c478bd9Sstevel@tonic-gate */ 29437c478bd9Sstevel@tonic-gate ipif = ipif_lookup_seqid(ill, ire->ire_ipif_seqid); 29447c478bd9Sstevel@tonic-gate if (ipif != NULL) { 29457c478bd9Sstevel@tonic-gate ipif_refhold_locked(ipif); 29467c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 29477c478bd9Sstevel@tonic-gate break; 29487c478bd9Sstevel@tonic-gate } 29497c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 29507c478bd9Sstevel@tonic-gate } 2951f4b3ec61Sdh155122 rw_exit(&ipst->ips_ill_g_lock); 29527c478bd9Sstevel@tonic-gate if (ipif == NULL || 29537c478bd9Sstevel@tonic-gate (ipif->ipif_isv6 && 29547c478bd9Sstevel@tonic-gate !IN6_ARE_ADDR_EQUAL(&ire->ire_src_addr_v6, 29557c478bd9Sstevel@tonic-gate &ipif->ipif_v6src_addr)) || 29567c478bd9Sstevel@tonic-gate (!ipif->ipif_isv6 && 29577c478bd9Sstevel@tonic-gate ire->ire_src_addr != ipif->ipif_src_addr) || 295845916cd2Sjpk ire->ire_zoneid != ipif->ipif_zoneid) { 29597c478bd9Sstevel@tonic-gate 29607c478bd9Sstevel@tonic-gate if (ipif != NULL) 29617c478bd9Sstevel@tonic-gate ipif_refrele(ipif); 29627c478bd9Sstevel@tonic-gate ire->ire_ipif = NULL; 29637c478bd9Sstevel@tonic-gate ire_delete(ire); 29647c478bd9Sstevel@tonic-gate *irep = NULL; 29657c478bd9Sstevel@tonic-gate return (EINVAL); 29667c478bd9Sstevel@tonic-gate } 29677c478bd9Sstevel@tonic-gate 29687c478bd9Sstevel@tonic-gate 29697c478bd9Sstevel@tonic-gate ASSERT(ill != NULL); 29707c478bd9Sstevel@tonic-gate /* 29717c478bd9Sstevel@tonic-gate * If this group was dismantled while this packets was 29727c478bd9Sstevel@tonic-gate * queued in ARP, don't add it here. 29737c478bd9Sstevel@tonic-gate */ 29747c478bd9Sstevel@tonic-gate if (ire->ire_ipif->ipif_ill->ill_group != ill->ill_group) { 29757c478bd9Sstevel@tonic-gate /* We don't want ire_inactive bump stats for this */ 29767c478bd9Sstevel@tonic-gate ipif_refrele(ipif); 29777c478bd9Sstevel@tonic-gate ire->ire_ipif = NULL; 29787c478bd9Sstevel@tonic-gate ire_delete(ire); 29797c478bd9Sstevel@tonic-gate *irep = NULL; 29807c478bd9Sstevel@tonic-gate return (EINVAL); 29817c478bd9Sstevel@tonic-gate } 2982dc3879f9Sjarrett 2983dc3879f9Sjarrett /* 2984dc3879f9Sjarrett * Since we didn't attach label security attributes to the 2985dc3879f9Sjarrett * ire for the resolver case, we need to add it now. (only 2986dc3879f9Sjarrett * for v4 resolver and v6 xresolv case). 2987dc3879f9Sjarrett */ 2988dc3879f9Sjarrett if (is_system_labeled() && ire_is_mblk) { 2989dc3879f9Sjarrett if (ire->ire_ipversion == IPV4_VERSION) { 2990dc3879f9Sjarrett ga.ga_af = AF_INET; 2991dc3879f9Sjarrett IN6_IPADDR_TO_V4MAPPED(ire->ire_gateway_addr != 2992dc3879f9Sjarrett INADDR_ANY ? ire->ire_gateway_addr : 2993dc3879f9Sjarrett ire->ire_addr, &ga.ga_addr); 2994dc3879f9Sjarrett } else { 2995dc3879f9Sjarrett ga.ga_af = AF_INET6; 2996dc3879f9Sjarrett ga.ga_addr = IN6_IS_ADDR_UNSPECIFIED( 2997dc3879f9Sjarrett &ire->ire_gateway_addr_v6) ? 2998dc3879f9Sjarrett ire->ire_addr_v6 : 2999dc3879f9Sjarrett ire->ire_gateway_addr_v6; 3000dc3879f9Sjarrett } 3001dc3879f9Sjarrett gcgrp = gcgrp_lookup(&ga, B_FALSE); 3002dc3879f9Sjarrett error = tsol_ire_init_gwattr(ire, ire->ire_ipversion, 3003dc3879f9Sjarrett NULL, gcgrp); 3004dc3879f9Sjarrett if (error != 0) { 3005dc3879f9Sjarrett if (gcgrp != NULL) { 3006dc3879f9Sjarrett GCGRP_REFRELE(gcgrp); 3007dc3879f9Sjarrett gcgrp = NULL; 3008dc3879f9Sjarrett } 3009dc3879f9Sjarrett ipif_refrele(ipif); 3010dc3879f9Sjarrett ire->ire_ipif = NULL; 3011dc3879f9Sjarrett ire_delete(ire); 3012dc3879f9Sjarrett *irep = NULL; 3013dc3879f9Sjarrett return (error); 3014dc3879f9Sjarrett } 3015dc3879f9Sjarrett } 30167c478bd9Sstevel@tonic-gate } 30177c478bd9Sstevel@tonic-gate 30187c478bd9Sstevel@tonic-gate /* 30197c478bd9Sstevel@tonic-gate * In case ire was changed 30207c478bd9Sstevel@tonic-gate */ 30217c478bd9Sstevel@tonic-gate *irep = ire; 30227c478bd9Sstevel@tonic-gate if (ire->ire_ipversion == IPV6_VERSION) { 30237c478bd9Sstevel@tonic-gate error = ire_add_v6(irep, q, mp, func); 30247c478bd9Sstevel@tonic-gate } else { 30257c478bd9Sstevel@tonic-gate if (ire->ire_in_ill == NULL) 3026c793af95Ssangeeta error = ire_add_v4(irep, q, mp, func, allow_unresolved); 30277c478bd9Sstevel@tonic-gate else 30287c478bd9Sstevel@tonic-gate error = ire_add_srcif_v4(irep, q, mp, func); 30297c478bd9Sstevel@tonic-gate } 30307c478bd9Sstevel@tonic-gate if (ipif != NULL) 30317c478bd9Sstevel@tonic-gate ipif_refrele(ipif); 30327c478bd9Sstevel@tonic-gate return (error); 30337c478bd9Sstevel@tonic-gate } 30347c478bd9Sstevel@tonic-gate 30357c478bd9Sstevel@tonic-gate /* 3036dc3879f9Sjarrett * Add an initialized IRE to an appropriate table based on ire_type. 30377c478bd9Sstevel@tonic-gate * 30386bdb8e66Sdd193516 * The forward table contains IRE_PREFIX/IRE_HOST and 30397c478bd9Sstevel@tonic-gate * IRE_IF_RESOLVER/IRE_IF_NORESOLVER and IRE_DEFAULT. 30407c478bd9Sstevel@tonic-gate * 30417c478bd9Sstevel@tonic-gate * The cache table contains IRE_BROADCAST/IRE_LOCAL/IRE_LOOPBACK 30427c478bd9Sstevel@tonic-gate * and IRE_CACHE. 30437c478bd9Sstevel@tonic-gate * 30447c478bd9Sstevel@tonic-gate * NOTE : This function is called as writer though not required 30457c478bd9Sstevel@tonic-gate * by this function. 30467c478bd9Sstevel@tonic-gate */ 30477c478bd9Sstevel@tonic-gate static int 3048c793af95Ssangeeta ire_add_v4(ire_t **ire_p, queue_t *q, mblk_t *mp, ipsq_func_t func, 3049c793af95Ssangeeta boolean_t allow_unresolved) 30507c478bd9Sstevel@tonic-gate { 30517c478bd9Sstevel@tonic-gate ire_t *ire1; 30527c478bd9Sstevel@tonic-gate irb_t *irb_ptr; 30537c478bd9Sstevel@tonic-gate ire_t **irep; 30547c478bd9Sstevel@tonic-gate int flags; 30557c478bd9Sstevel@tonic-gate ire_t *pire = NULL; 30567c478bd9Sstevel@tonic-gate ill_t *stq_ill; 30577c478bd9Sstevel@tonic-gate ire_t *ire = *ire_p; 30587c478bd9Sstevel@tonic-gate int error; 3059c793af95Ssangeeta boolean_t need_refrele = B_FALSE; 3060c793af95Ssangeeta nce_t *nce; 3061f4b3ec61Sdh155122 ip_stack_t *ipst = ire->ire_ipst; 30627c478bd9Sstevel@tonic-gate 30637c478bd9Sstevel@tonic-gate if (ire->ire_ipif != NULL) 30647c478bd9Sstevel@tonic-gate ASSERT(!MUTEX_HELD(&ire->ire_ipif->ipif_ill->ill_lock)); 30657c478bd9Sstevel@tonic-gate if (ire->ire_stq != NULL) 30667c478bd9Sstevel@tonic-gate ASSERT(!MUTEX_HELD( 30677c478bd9Sstevel@tonic-gate &((ill_t *)(ire->ire_stq->q_ptr))->ill_lock)); 30687c478bd9Sstevel@tonic-gate ASSERT(ire->ire_ipversion == IPV4_VERSION); 30697c478bd9Sstevel@tonic-gate ASSERT(ire->ire_mp == NULL); /* Calls should go through ire_add */ 30707c478bd9Sstevel@tonic-gate ASSERT(ire->ire_in_ill == NULL); /* No srcif entries */ 30717c478bd9Sstevel@tonic-gate 30727c478bd9Sstevel@tonic-gate /* Find the appropriate list head. */ 30737c478bd9Sstevel@tonic-gate switch (ire->ire_type) { 30747c478bd9Sstevel@tonic-gate case IRE_HOST: 30757c478bd9Sstevel@tonic-gate ire->ire_mask = IP_HOST_MASK; 30767c478bd9Sstevel@tonic-gate ire->ire_masklen = IP_ABITS; 30777c478bd9Sstevel@tonic-gate if ((ire->ire_flags & RTF_SETSRC) == 0) 30787c478bd9Sstevel@tonic-gate ire->ire_src_addr = 0; 30797c478bd9Sstevel@tonic-gate break; 30807c478bd9Sstevel@tonic-gate case IRE_CACHE: 30817c478bd9Sstevel@tonic-gate case IRE_BROADCAST: 30827c478bd9Sstevel@tonic-gate case IRE_LOCAL: 30837c478bd9Sstevel@tonic-gate case IRE_LOOPBACK: 30847c478bd9Sstevel@tonic-gate ire->ire_mask = IP_HOST_MASK; 30857c478bd9Sstevel@tonic-gate ire->ire_masklen = IP_ABITS; 30867c478bd9Sstevel@tonic-gate break; 30877c478bd9Sstevel@tonic-gate case IRE_PREFIX: 30887c478bd9Sstevel@tonic-gate if ((ire->ire_flags & RTF_SETSRC) == 0) 30897c478bd9Sstevel@tonic-gate ire->ire_src_addr = 0; 30907c478bd9Sstevel@tonic-gate break; 30917c478bd9Sstevel@tonic-gate case IRE_DEFAULT: 30927c478bd9Sstevel@tonic-gate if ((ire->ire_flags & RTF_SETSRC) == 0) 30937c478bd9Sstevel@tonic-gate ire->ire_src_addr = 0; 30947c478bd9Sstevel@tonic-gate break; 30957c478bd9Sstevel@tonic-gate case IRE_IF_RESOLVER: 30967c478bd9Sstevel@tonic-gate case IRE_IF_NORESOLVER: 30977c478bd9Sstevel@tonic-gate break; 30987c478bd9Sstevel@tonic-gate default: 3099c793af95Ssangeeta ip0dbg(("ire_add_v4: ire %p has unrecognized IRE type (%d)\n", 3100c793af95Ssangeeta (void *)ire, ire->ire_type)); 31017c478bd9Sstevel@tonic-gate ire_delete(ire); 31027c478bd9Sstevel@tonic-gate *ire_p = NULL; 31037c478bd9Sstevel@tonic-gate return (EINVAL); 31047c478bd9Sstevel@tonic-gate } 31057c478bd9Sstevel@tonic-gate 31067c478bd9Sstevel@tonic-gate /* Make sure the address is properly masked. */ 31077c478bd9Sstevel@tonic-gate ire->ire_addr &= ire->ire_mask; 31087c478bd9Sstevel@tonic-gate 31097c478bd9Sstevel@tonic-gate /* 31107c478bd9Sstevel@tonic-gate * ip_newroute/ip_newroute_multi are unable to prevent the deletion 31117c478bd9Sstevel@tonic-gate * of the interface route while adding an IRE_CACHE for an on-link 31127c478bd9Sstevel@tonic-gate * destination in the IRE_IF_RESOLVER case, since the ire has to 31137c478bd9Sstevel@tonic-gate * go to ARP and return. We can't do a REFHOLD on the 31147c478bd9Sstevel@tonic-gate * associated interface ire for fear of ARP freeing the message. 31157c478bd9Sstevel@tonic-gate * Here we look up the interface ire in the forwarding table and 31167c478bd9Sstevel@tonic-gate * make sure that the interface route has not been deleted. 31177c478bd9Sstevel@tonic-gate */ 31187c478bd9Sstevel@tonic-gate if (ire->ire_type == IRE_CACHE && ire->ire_gateway_addr == 0 && 31197c478bd9Sstevel@tonic-gate ((ill_t *)ire->ire_stq->q_ptr)->ill_net_type == IRE_IF_RESOLVER) { 3120c793af95Ssangeeta 31217c478bd9Sstevel@tonic-gate ASSERT(ire->ire_max_fragp == NULL); 31227c478bd9Sstevel@tonic-gate if (CLASSD(ire->ire_addr) && !(ire->ire_flags & RTF_SETSRC)) { 31237c478bd9Sstevel@tonic-gate /* 31247c478bd9Sstevel@tonic-gate * The ihandle that we used in ip_newroute_multi 31257c478bd9Sstevel@tonic-gate * comes from the interface route corresponding 31267c478bd9Sstevel@tonic-gate * to ire_ipif. Lookup here to see if it exists 31277c478bd9Sstevel@tonic-gate * still. 31287c478bd9Sstevel@tonic-gate * If the ire has a source address assigned using 31297c478bd9Sstevel@tonic-gate * RTF_SETSRC, ire_ipif is the logical interface holding 31307c478bd9Sstevel@tonic-gate * this source address, so we can't use it to check for 31317c478bd9Sstevel@tonic-gate * the existence of the interface route. Instead we rely 31327c478bd9Sstevel@tonic-gate * on the brute force ihandle search in 31337c478bd9Sstevel@tonic-gate * ire_ihandle_lookup_onlink() below. 31347c478bd9Sstevel@tonic-gate */ 31357c478bd9Sstevel@tonic-gate pire = ipif_to_ire(ire->ire_ipif); 31367c478bd9Sstevel@tonic-gate if (pire == NULL) { 31377c478bd9Sstevel@tonic-gate ire_delete(ire); 31387c478bd9Sstevel@tonic-gate *ire_p = NULL; 31397c478bd9Sstevel@tonic-gate return (EINVAL); 31407c478bd9Sstevel@tonic-gate } else if (pire->ire_ihandle != ire->ire_ihandle) { 31417c478bd9Sstevel@tonic-gate ire_refrele(pire); 31427c478bd9Sstevel@tonic-gate ire_delete(ire); 31437c478bd9Sstevel@tonic-gate *ire_p = NULL; 31447c478bd9Sstevel@tonic-gate return (EINVAL); 31457c478bd9Sstevel@tonic-gate } 31467c478bd9Sstevel@tonic-gate } else { 31477c478bd9Sstevel@tonic-gate pire = ire_ihandle_lookup_onlink(ire); 31487c478bd9Sstevel@tonic-gate if (pire == NULL) { 31497c478bd9Sstevel@tonic-gate ire_delete(ire); 31507c478bd9Sstevel@tonic-gate *ire_p = NULL; 31517c478bd9Sstevel@tonic-gate return (EINVAL); 31527c478bd9Sstevel@tonic-gate } 31537c478bd9Sstevel@tonic-gate } 31547c478bd9Sstevel@tonic-gate /* Prevent pire from getting deleted */ 31557c478bd9Sstevel@tonic-gate IRB_REFHOLD(pire->ire_bucket); 31567c478bd9Sstevel@tonic-gate /* Has it been removed already ? */ 31577c478bd9Sstevel@tonic-gate if (pire->ire_marks & IRE_MARK_CONDEMNED) { 31587c478bd9Sstevel@tonic-gate IRB_REFRELE(pire->ire_bucket); 31597c478bd9Sstevel@tonic-gate ire_refrele(pire); 31607c478bd9Sstevel@tonic-gate ire_delete(ire); 31617c478bd9Sstevel@tonic-gate *ire_p = NULL; 31627c478bd9Sstevel@tonic-gate return (EINVAL); 31637c478bd9Sstevel@tonic-gate } 31647c478bd9Sstevel@tonic-gate } else { 31657c478bd9Sstevel@tonic-gate ASSERT(ire->ire_max_fragp != NULL); 31667c478bd9Sstevel@tonic-gate } 31677c478bd9Sstevel@tonic-gate flags = (MATCH_IRE_MASK | MATCH_IRE_TYPE | MATCH_IRE_GW); 31687c478bd9Sstevel@tonic-gate 31697c478bd9Sstevel@tonic-gate if (ire->ire_ipif != NULL) { 31707c478bd9Sstevel@tonic-gate /* 31717c478bd9Sstevel@tonic-gate * We use MATCH_IRE_IPIF while adding IRE_CACHES only 31727c478bd9Sstevel@tonic-gate * for historic reasons and to maintain symmetry with 31737c478bd9Sstevel@tonic-gate * IPv6 code path. Historically this was used by 31747c478bd9Sstevel@tonic-gate * multicast code to create multiple IRE_CACHES on 31757c478bd9Sstevel@tonic-gate * a single ill with different ipifs. This was used 31767c478bd9Sstevel@tonic-gate * so that multicast packets leaving the node had the 31777c478bd9Sstevel@tonic-gate * right source address. This is no longer needed as 31787c478bd9Sstevel@tonic-gate * ip_wput initializes the address correctly. 31797c478bd9Sstevel@tonic-gate */ 31807c478bd9Sstevel@tonic-gate flags |= MATCH_IRE_IPIF; 31817c478bd9Sstevel@tonic-gate /* 31827c478bd9Sstevel@tonic-gate * If we are creating hidden ires, make sure we search on 31837c478bd9Sstevel@tonic-gate * this ill (MATCH_IRE_ILL) and a hidden ire, 31847c478bd9Sstevel@tonic-gate * while we are searching for duplicates below. Otherwise we 31857c478bd9Sstevel@tonic-gate * could potentially find an IRE on some other interface 31867c478bd9Sstevel@tonic-gate * and it may not be a IRE marked with IRE_MARK_HIDDEN. We 31877c478bd9Sstevel@tonic-gate * shouldn't do this as this will lead to an infinite loop 31887c478bd9Sstevel@tonic-gate * (if we get to ip_wput again) eventually we need an hidden 31897c478bd9Sstevel@tonic-gate * ire for this packet to go out. MATCH_IRE_ILL is explicitly 31907c478bd9Sstevel@tonic-gate * done below. 31917c478bd9Sstevel@tonic-gate */ 31927c478bd9Sstevel@tonic-gate if (ire->ire_type == IRE_CACHE && 31937c478bd9Sstevel@tonic-gate (ire->ire_marks & IRE_MARK_HIDDEN)) 31947c478bd9Sstevel@tonic-gate flags |= (MATCH_IRE_MARK_HIDDEN); 31957c478bd9Sstevel@tonic-gate } 3196c793af95Ssangeeta if ((ire->ire_type & IRE_CACHETABLE) == 0) { 3197c793af95Ssangeeta irb_ptr = ire_get_bucket(ire); 3198c793af95Ssangeeta need_refrele = B_TRUE; 3199c793af95Ssangeeta if (irb_ptr == NULL) { 3200c793af95Ssangeeta /* 3201c793af95Ssangeeta * This assumes that the ire has not added 3202c793af95Ssangeeta * a reference to the ipif. 3203c793af95Ssangeeta */ 3204c793af95Ssangeeta ire->ire_ipif = NULL; 3205c793af95Ssangeeta ire_delete(ire); 3206c793af95Ssangeeta if (pire != NULL) { 3207c793af95Ssangeeta IRB_REFRELE(pire->ire_bucket); 3208c793af95Ssangeeta ire_refrele(pire); 3209c793af95Ssangeeta } 3210c793af95Ssangeeta *ire_p = NULL; 3211c793af95Ssangeeta return (EINVAL); 3212c793af95Ssangeeta } 3213c793af95Ssangeeta } else { 3214f4b3ec61Sdh155122 irb_ptr = &(ipst->ips_ip_cache_table[IRE_ADDR_HASH( 3215f4b3ec61Sdh155122 ire->ire_addr, ipst->ips_ip_cache_table_size)]); 3216c793af95Ssangeeta } 32177c478bd9Sstevel@tonic-gate 32187c478bd9Sstevel@tonic-gate /* 32197c478bd9Sstevel@tonic-gate * Start the atomic add of the ire. Grab the ill locks, 32207c478bd9Sstevel@tonic-gate * ill_g_usesrc_lock and the bucket lock. Check for condemned 32217c478bd9Sstevel@tonic-gate * 32227c478bd9Sstevel@tonic-gate * If ipif or ill is changing ire_atomic_start() may queue the 32237c478bd9Sstevel@tonic-gate * request and return EINPROGRESS. 3224f4b3ec61Sdh155122 * To avoid lock order problems, get the ndp4->ndp_g_lock. 32257c478bd9Sstevel@tonic-gate */ 3226f4b3ec61Sdh155122 mutex_enter(&ipst->ips_ndp4->ndp_g_lock); 32277c478bd9Sstevel@tonic-gate error = ire_atomic_start(irb_ptr, ire, q, mp, func); 32287c478bd9Sstevel@tonic-gate if (error != 0) { 3229f4b3ec61Sdh155122 mutex_exit(&ipst->ips_ndp4->ndp_g_lock); 32307c478bd9Sstevel@tonic-gate /* 32317c478bd9Sstevel@tonic-gate * We don't know whether it is a valid ipif or not. 32327c478bd9Sstevel@tonic-gate * So, set it to NULL. This assumes that the ire has not added 32337c478bd9Sstevel@tonic-gate * a reference to the ipif. 32347c478bd9Sstevel@tonic-gate */ 32357c478bd9Sstevel@tonic-gate ire->ire_ipif = NULL; 32367c478bd9Sstevel@tonic-gate ire_delete(ire); 32377c478bd9Sstevel@tonic-gate if (pire != NULL) { 32387c478bd9Sstevel@tonic-gate IRB_REFRELE(pire->ire_bucket); 32397c478bd9Sstevel@tonic-gate ire_refrele(pire); 32407c478bd9Sstevel@tonic-gate } 32417c478bd9Sstevel@tonic-gate *ire_p = NULL; 3242c793af95Ssangeeta if (need_refrele) 3243c793af95Ssangeeta IRB_REFRELE(irb_ptr); 32447c478bd9Sstevel@tonic-gate return (error); 32457c478bd9Sstevel@tonic-gate } 32467c478bd9Sstevel@tonic-gate /* 32477c478bd9Sstevel@tonic-gate * To avoid creating ires having stale values for the ire_max_frag 32487c478bd9Sstevel@tonic-gate * we get the latest value atomically here. For more details 32497c478bd9Sstevel@tonic-gate * see the block comment in ip_sioctl_mtu and in DL_NOTE_SDU_CHANGE 32507c478bd9Sstevel@tonic-gate * in ip_rput_dlpi_writer 32517c478bd9Sstevel@tonic-gate */ 32527c478bd9Sstevel@tonic-gate if (ire->ire_max_fragp == NULL) { 32537c478bd9Sstevel@tonic-gate if (CLASSD(ire->ire_addr)) 32547c478bd9Sstevel@tonic-gate ire->ire_max_frag = ire->ire_ipif->ipif_mtu; 32557c478bd9Sstevel@tonic-gate else 32567c478bd9Sstevel@tonic-gate ire->ire_max_frag = pire->ire_max_frag; 32577c478bd9Sstevel@tonic-gate } else { 32587c478bd9Sstevel@tonic-gate uint_t max_frag; 32597c478bd9Sstevel@tonic-gate 32607c478bd9Sstevel@tonic-gate max_frag = *ire->ire_max_fragp; 32617c478bd9Sstevel@tonic-gate ire->ire_max_fragp = NULL; 32627c478bd9Sstevel@tonic-gate ire->ire_max_frag = max_frag; 32637c478bd9Sstevel@tonic-gate } 32647c478bd9Sstevel@tonic-gate /* 32657c478bd9Sstevel@tonic-gate * Atomically check for duplicate and insert in the table. 32667c478bd9Sstevel@tonic-gate */ 32677c478bd9Sstevel@tonic-gate for (ire1 = irb_ptr->irb_ire; ire1 != NULL; ire1 = ire1->ire_next) { 32687c478bd9Sstevel@tonic-gate if (ire1->ire_marks & IRE_MARK_CONDEMNED) 32697c478bd9Sstevel@tonic-gate continue; 32707c478bd9Sstevel@tonic-gate if (ire->ire_ipif != NULL) { 32717c478bd9Sstevel@tonic-gate /* 32727c478bd9Sstevel@tonic-gate * We do MATCH_IRE_ILL implicitly here for IREs 32737c478bd9Sstevel@tonic-gate * with a non-null ire_ipif, including IRE_CACHEs. 32747c478bd9Sstevel@tonic-gate * As ire_ipif and ire_stq could point to two 32757c478bd9Sstevel@tonic-gate * different ills, we can't pass just ire_ipif to 32767c478bd9Sstevel@tonic-gate * ire_match_args and get a match on both ills. 32777c478bd9Sstevel@tonic-gate * This is just needed for duplicate checks here and 32787c478bd9Sstevel@tonic-gate * so we don't add an extra argument to 32797c478bd9Sstevel@tonic-gate * ire_match_args for this. Do it locally. 32807c478bd9Sstevel@tonic-gate * 32817c478bd9Sstevel@tonic-gate * NOTE : Currently there is no part of the code 32827c478bd9Sstevel@tonic-gate * that asks for both MATH_IRE_IPIF and MATCH_IRE_ILL 32837c478bd9Sstevel@tonic-gate * match for IRE_CACHEs. Thus we don't want to 32847c478bd9Sstevel@tonic-gate * extend the arguments to ire_match_args. 32857c478bd9Sstevel@tonic-gate */ 32867c478bd9Sstevel@tonic-gate if (ire1->ire_stq != ire->ire_stq) 32877c478bd9Sstevel@tonic-gate continue; 32887c478bd9Sstevel@tonic-gate /* 32897c478bd9Sstevel@tonic-gate * Multiroute IRE_CACHEs for a given destination can 32907c478bd9Sstevel@tonic-gate * have the same ire_ipif, typically if their source 32917c478bd9Sstevel@tonic-gate * address is forced using RTF_SETSRC, and the same 32927c478bd9Sstevel@tonic-gate * send-to queue. We differentiate them using the parent 32937c478bd9Sstevel@tonic-gate * handle. 32947c478bd9Sstevel@tonic-gate */ 32957c478bd9Sstevel@tonic-gate if (ire->ire_type == IRE_CACHE && 32967c478bd9Sstevel@tonic-gate (ire1->ire_flags & RTF_MULTIRT) && 32977c478bd9Sstevel@tonic-gate (ire->ire_flags & RTF_MULTIRT) && 32987c478bd9Sstevel@tonic-gate (ire1->ire_phandle != ire->ire_phandle)) 32997c478bd9Sstevel@tonic-gate continue; 33007c478bd9Sstevel@tonic-gate } 33017c478bd9Sstevel@tonic-gate if (ire1->ire_zoneid != ire->ire_zoneid) 33027c478bd9Sstevel@tonic-gate continue; 33037c478bd9Sstevel@tonic-gate if (ire_match_args(ire1, ire->ire_addr, ire->ire_mask, 33047c478bd9Sstevel@tonic-gate ire->ire_gateway_addr, ire->ire_type, ire->ire_ipif, 330545916cd2Sjpk ire->ire_zoneid, 0, NULL, flags)) { 33067c478bd9Sstevel@tonic-gate /* 33077c478bd9Sstevel@tonic-gate * Return the old ire after doing a REFHOLD. 33087c478bd9Sstevel@tonic-gate * As most of the callers continue to use the IRE 33097c478bd9Sstevel@tonic-gate * after adding, we return a held ire. This will 33107c478bd9Sstevel@tonic-gate * avoid a lookup in the caller again. If the callers 33117c478bd9Sstevel@tonic-gate * don't want to use it, they need to do a REFRELE. 33127c478bd9Sstevel@tonic-gate */ 33137c478bd9Sstevel@tonic-gate ip1dbg(("found dup ire existing %p new %p", 33147c478bd9Sstevel@tonic-gate (void *)ire1, (void *)ire)); 33157c478bd9Sstevel@tonic-gate IRE_REFHOLD(ire1); 33167c478bd9Sstevel@tonic-gate ire_atomic_end(irb_ptr, ire); 3317f4b3ec61Sdh155122 mutex_exit(&ipst->ips_ndp4->ndp_g_lock); 33187c478bd9Sstevel@tonic-gate ire_delete(ire); 33197c478bd9Sstevel@tonic-gate if (pire != NULL) { 33207c478bd9Sstevel@tonic-gate /* 33217c478bd9Sstevel@tonic-gate * Assert that it is not removed from the 33227c478bd9Sstevel@tonic-gate * list yet. 33237c478bd9Sstevel@tonic-gate */ 33247c478bd9Sstevel@tonic-gate ASSERT(pire->ire_ptpn != NULL); 33257c478bd9Sstevel@tonic-gate IRB_REFRELE(pire->ire_bucket); 33267c478bd9Sstevel@tonic-gate ire_refrele(pire); 33277c478bd9Sstevel@tonic-gate } 33287c478bd9Sstevel@tonic-gate *ire_p = ire1; 3329c793af95Ssangeeta if (need_refrele) 3330c793af95Ssangeeta IRB_REFRELE(irb_ptr); 33317c478bd9Sstevel@tonic-gate return (0); 33327c478bd9Sstevel@tonic-gate } 33337c478bd9Sstevel@tonic-gate } 3334c793af95Ssangeeta if (ire->ire_type & IRE_CACHE) { 3335c793af95Ssangeeta ASSERT(ire->ire_stq != NULL); 3336c793af95Ssangeeta nce = ndp_lookup_v4(ire_to_ill(ire), 3337c793af95Ssangeeta ((ire->ire_gateway_addr != INADDR_ANY) ? 3338c793af95Ssangeeta &ire->ire_gateway_addr : &ire->ire_addr), 3339c793af95Ssangeeta B_TRUE); 3340c793af95Ssangeeta if (nce != NULL) 3341c793af95Ssangeeta mutex_enter(&nce->nce_lock); 3342c793af95Ssangeeta /* 3343c793af95Ssangeeta * if the nce is NCE_F_CONDEMNED, or if it is not ND_REACHABLE 3344c793af95Ssangeeta * and the caller has prohibited the addition of incomplete 3345c793af95Ssangeeta * ire's, we fail the add. Note that nce_state could be 3346b9c344b3Ssowmini * something other than ND_REACHABLE if the nce had 3347b9c344b3Ssowmini * just expired and the ire_create preceding the 3348b9c344b3Ssowmini * ire_add added a new ND_INITIAL nce. 3349c793af95Ssangeeta */ 3350c793af95Ssangeeta if ((nce == NULL) || 3351c793af95Ssangeeta (nce->nce_flags & NCE_F_CONDEMNED) || 3352c793af95Ssangeeta (!allow_unresolved && 3353107875b0Ssangeeta (nce->nce_state != ND_REACHABLE))) { 3354b9c344b3Ssowmini if (nce != NULL) { 3355b9c344b3Ssowmini DTRACE_PROBE1(ire__bad__nce, nce_t *, nce); 3356c793af95Ssangeeta mutex_exit(&nce->nce_lock); 3357b9c344b3Ssowmini } 3358c793af95Ssangeeta ire_atomic_end(irb_ptr, ire); 3359f4b3ec61Sdh155122 mutex_exit(&ipst->ips_ndp4->ndp_g_lock); 3360c793af95Ssangeeta if (nce != NULL) 3361c793af95Ssangeeta NCE_REFRELE(nce); 3362c793af95Ssangeeta DTRACE_PROBE1(ire__no__nce, ire_t *, ire); 3363c793af95Ssangeeta ire_delete(ire); 3364c793af95Ssangeeta if (pire != NULL) { 3365c793af95Ssangeeta IRB_REFRELE(pire->ire_bucket); 3366c793af95Ssangeeta ire_refrele(pire); 3367c793af95Ssangeeta } 3368c793af95Ssangeeta *ire_p = NULL; 3369c793af95Ssangeeta if (need_refrele) 3370c793af95Ssangeeta IRB_REFRELE(irb_ptr); 3371c793af95Ssangeeta return (EINVAL); 3372c793af95Ssangeeta } else { 3373c793af95Ssangeeta ire->ire_nce = nce; 3374c793af95Ssangeeta mutex_exit(&nce->nce_lock); 3375c793af95Ssangeeta /* 3376c793af95Ssangeeta * We are associating this nce to the ire, so 3377c793af95Ssangeeta * change the nce ref taken in ndp_lookup_v4() from 3378c793af95Ssangeeta * NCE_REFHOLD to NCE_REFHOLD_NOTR 3379c793af95Ssangeeta */ 3380c793af95Ssangeeta NCE_REFHOLD_TO_REFHOLD_NOTR(ire->ire_nce); 3381c793af95Ssangeeta } 3382c793af95Ssangeeta } 33837c478bd9Sstevel@tonic-gate /* 33847c478bd9Sstevel@tonic-gate * Make it easy for ip_wput_ire() to hit multiple broadcast ires by 33857c478bd9Sstevel@tonic-gate * grouping identical addresses together on the hash chain. We also 33867c478bd9Sstevel@tonic-gate * don't want to send multiple copies out if there are two ills part 33877c478bd9Sstevel@tonic-gate * of the same group. Thus we group the ires with same addr and same 33887c478bd9Sstevel@tonic-gate * ill group together so that ip_wput_ire can easily skip all the 33897c478bd9Sstevel@tonic-gate * ires with same addr and same group after sending the first copy. 33907c478bd9Sstevel@tonic-gate * We do this only for IRE_BROADCASTs as ip_wput_ire is currently 33917c478bd9Sstevel@tonic-gate * interested in such groupings only for broadcasts. 33927c478bd9Sstevel@tonic-gate * 33937c478bd9Sstevel@tonic-gate * NOTE : If the interfaces are brought up first and then grouped, 33947c478bd9Sstevel@tonic-gate * illgrp_insert will handle it. We come here when the interfaces 33957c478bd9Sstevel@tonic-gate * are already in group and we are bringing them UP. 33967c478bd9Sstevel@tonic-gate * 33977c478bd9Sstevel@tonic-gate * Find the first entry that matches ire_addr. *irep will be null 33987c478bd9Sstevel@tonic-gate * if no match. 339901802382Ssowmini * 340001802382Ssowmini * Note: the loopback and non-loopback broadcast entries for an 340101802382Ssowmini * interface MUST be added before any MULTIRT entries. 34027c478bd9Sstevel@tonic-gate */ 34037c478bd9Sstevel@tonic-gate irep = (ire_t **)irb_ptr; 34047c478bd9Sstevel@tonic-gate while ((ire1 = *irep) != NULL && ire->ire_addr != ire1->ire_addr) 34057c478bd9Sstevel@tonic-gate irep = &ire1->ire_next; 34067c478bd9Sstevel@tonic-gate if (ire->ire_type == IRE_BROADCAST && *irep != NULL) { 34077c478bd9Sstevel@tonic-gate /* 34087c478bd9Sstevel@tonic-gate * We found some ire (i.e *irep) with a matching addr. We 34097c478bd9Sstevel@tonic-gate * want to group ires with same addr and same ill group 34107c478bd9Sstevel@tonic-gate * together. 34117c478bd9Sstevel@tonic-gate * 34127c478bd9Sstevel@tonic-gate * First get to the entry that matches our address and 34137c478bd9Sstevel@tonic-gate * ill group i.e stop as soon as we find the first ire 34147c478bd9Sstevel@tonic-gate * matching the ill group and address. If there is only 34157c478bd9Sstevel@tonic-gate * an address match, we should walk and look for some 34167c478bd9Sstevel@tonic-gate * group match. These are some of the possible scenarios : 34177c478bd9Sstevel@tonic-gate * 34187c478bd9Sstevel@tonic-gate * 1) There are no groups at all i.e all ire's ill_group 34197c478bd9Sstevel@tonic-gate * are NULL. In that case we will essentially group 34207c478bd9Sstevel@tonic-gate * all the ires with the same addr together. Same as 34217c478bd9Sstevel@tonic-gate * the "else" block of this "if". 34227c478bd9Sstevel@tonic-gate * 34237c478bd9Sstevel@tonic-gate * 2) There are some groups and this ire's ill_group is 34247c478bd9Sstevel@tonic-gate * NULL. In this case, we will first find the group 34257c478bd9Sstevel@tonic-gate * that matches the address and a NULL group. Then 34267c478bd9Sstevel@tonic-gate * we will insert the ire at the end of that group. 34277c478bd9Sstevel@tonic-gate * 34287c478bd9Sstevel@tonic-gate * 3) There are some groups and this ires's ill_group is 34297c478bd9Sstevel@tonic-gate * non-NULL. In this case we will first find the group 34307c478bd9Sstevel@tonic-gate * that matches the address and the ill_group. Then 34317c478bd9Sstevel@tonic-gate * we will insert the ire at the end of that group. 34327c478bd9Sstevel@tonic-gate */ 343301802382Ssowmini for (;;) { 34347c478bd9Sstevel@tonic-gate ire1 = *irep; 34357c478bd9Sstevel@tonic-gate if ((ire1->ire_next == NULL) || 34367c478bd9Sstevel@tonic-gate (ire1->ire_next->ire_addr != ire->ire_addr) || 34377c478bd9Sstevel@tonic-gate (ire1->ire_type != IRE_BROADCAST) || 343801802382Ssowmini (ire1->ire_flags & RTF_MULTIRT) || 34397c478bd9Sstevel@tonic-gate (ire1->ire_ipif->ipif_ill->ill_group == 34407c478bd9Sstevel@tonic-gate ire->ire_ipif->ipif_ill->ill_group)) 34417c478bd9Sstevel@tonic-gate break; 34427c478bd9Sstevel@tonic-gate irep = &ire1->ire_next; 34437c478bd9Sstevel@tonic-gate } 34447c478bd9Sstevel@tonic-gate ASSERT(*irep != NULL); 344501802382Ssowmini /* 344601802382Ssowmini * The ire will be added before *irep, so 344701802382Ssowmini * if irep is a MULTIRT ire, just break to 344801802382Ssowmini * ire insertion code. 344901802382Ssowmini */ 345001802382Ssowmini if (((*irep)->ire_flags & RTF_MULTIRT) != 0) 345101802382Ssowmini goto insert_ire; 345201802382Ssowmini 34537c478bd9Sstevel@tonic-gate irep = &((*irep)->ire_next); 34547c478bd9Sstevel@tonic-gate 34557c478bd9Sstevel@tonic-gate /* 34567c478bd9Sstevel@tonic-gate * Either we have hit the end of the list or the address 34577c478bd9Sstevel@tonic-gate * did not match or the group *matched*. If we found 34587c478bd9Sstevel@tonic-gate * a match on the group, skip to the end of the group. 34597c478bd9Sstevel@tonic-gate */ 34607c478bd9Sstevel@tonic-gate while (*irep != NULL) { 34617c478bd9Sstevel@tonic-gate ire1 = *irep; 34627c478bd9Sstevel@tonic-gate if ((ire1->ire_addr != ire->ire_addr) || 34637c478bd9Sstevel@tonic-gate (ire1->ire_type != IRE_BROADCAST) || 34647c478bd9Sstevel@tonic-gate (ire1->ire_ipif->ipif_ill->ill_group != 34657c478bd9Sstevel@tonic-gate ire->ire_ipif->ipif_ill->ill_group)) 34667c478bd9Sstevel@tonic-gate break; 34677c478bd9Sstevel@tonic-gate if (ire1->ire_ipif->ipif_ill->ill_group == NULL && 34687c478bd9Sstevel@tonic-gate ire1->ire_ipif == ire->ire_ipif) { 34697c478bd9Sstevel@tonic-gate irep = &ire1->ire_next; 34707c478bd9Sstevel@tonic-gate break; 34717c478bd9Sstevel@tonic-gate } 34727c478bd9Sstevel@tonic-gate irep = &ire1->ire_next; 34737c478bd9Sstevel@tonic-gate } 34747c478bd9Sstevel@tonic-gate } else if (*irep != NULL) { 34757c478bd9Sstevel@tonic-gate /* 34767c478bd9Sstevel@tonic-gate * Find the last ire which matches ire_addr. 34777c478bd9Sstevel@tonic-gate * Needed to do tail insertion among entries with the same 34787c478bd9Sstevel@tonic-gate * ire_addr. 34797c478bd9Sstevel@tonic-gate */ 34807c478bd9Sstevel@tonic-gate while (ire->ire_addr == ire1->ire_addr) { 34817c478bd9Sstevel@tonic-gate irep = &ire1->ire_next; 34827c478bd9Sstevel@tonic-gate ire1 = *irep; 34837c478bd9Sstevel@tonic-gate if (ire1 == NULL) 34847c478bd9Sstevel@tonic-gate break; 34857c478bd9Sstevel@tonic-gate } 34867c478bd9Sstevel@tonic-gate } 34877c478bd9Sstevel@tonic-gate 348801802382Ssowmini insert_ire: 34897c478bd9Sstevel@tonic-gate /* Insert at *irep */ 34907c478bd9Sstevel@tonic-gate ire1 = *irep; 34917c478bd9Sstevel@tonic-gate if (ire1 != NULL) 34927c478bd9Sstevel@tonic-gate ire1->ire_ptpn = &ire->ire_next; 34937c478bd9Sstevel@tonic-gate ire->ire_next = ire1; 34947c478bd9Sstevel@tonic-gate /* Link the new one in. */ 34957c478bd9Sstevel@tonic-gate ire->ire_ptpn = irep; 34967c478bd9Sstevel@tonic-gate 34977c478bd9Sstevel@tonic-gate /* 34987c478bd9Sstevel@tonic-gate * ire_walk routines de-reference ire_next without holding 34997c478bd9Sstevel@tonic-gate * a lock. Before we point to the new ire, we want to make 35007c478bd9Sstevel@tonic-gate * sure the store that sets the ire_next of the new ire 35017c478bd9Sstevel@tonic-gate * reaches global visibility, so that ire_walk routines 35027c478bd9Sstevel@tonic-gate * don't see a truncated list of ires i.e if the ire_next 35037c478bd9Sstevel@tonic-gate * of the new ire gets set after we do "*irep = ire" due 35047c478bd9Sstevel@tonic-gate * to re-ordering, the ire_walk thread will see a NULL 35057c478bd9Sstevel@tonic-gate * once it accesses the ire_next of the new ire. 35067c478bd9Sstevel@tonic-gate * membar_producer() makes sure that the following store 35077c478bd9Sstevel@tonic-gate * happens *after* all of the above stores. 35087c478bd9Sstevel@tonic-gate */ 35097c478bd9Sstevel@tonic-gate membar_producer(); 35107c478bd9Sstevel@tonic-gate *irep = ire; 35117c478bd9Sstevel@tonic-gate ire->ire_bucket = irb_ptr; 35127c478bd9Sstevel@tonic-gate /* 35137c478bd9Sstevel@tonic-gate * We return a bumped up IRE above. Keep it symmetrical 35147c478bd9Sstevel@tonic-gate * so that the callers will always have to release. This 35157c478bd9Sstevel@tonic-gate * helps the callers of this function because they continue 35167c478bd9Sstevel@tonic-gate * to use the IRE after adding and hence they don't have to 35177c478bd9Sstevel@tonic-gate * lookup again after we return the IRE. 35187c478bd9Sstevel@tonic-gate * 35197c478bd9Sstevel@tonic-gate * NOTE : We don't have to use atomics as this is appearing 35207c478bd9Sstevel@tonic-gate * in the list for the first time and no one else can bump 35217c478bd9Sstevel@tonic-gate * up the reference count on this yet. 35227c478bd9Sstevel@tonic-gate */ 35237c478bd9Sstevel@tonic-gate IRE_REFHOLD_LOCKED(ire); 3524f4b3ec61Sdh155122 BUMP_IRE_STATS(ipst->ips_ire_stats_v4, ire_stats_inserted); 3525c793af95Ssangeeta 35267c478bd9Sstevel@tonic-gate irb_ptr->irb_ire_cnt++; 3527c793af95Ssangeeta if (irb_ptr->irb_marks & IRB_MARK_FTABLE) 3528c793af95Ssangeeta irb_ptr->irb_nire++; 3529c793af95Ssangeeta 35307c478bd9Sstevel@tonic-gate if (ire->ire_marks & IRE_MARK_TEMPORARY) 35317c478bd9Sstevel@tonic-gate irb_ptr->irb_tmp_ire_cnt++; 35327c478bd9Sstevel@tonic-gate 35337c478bd9Sstevel@tonic-gate if (ire->ire_ipif != NULL) { 35347c478bd9Sstevel@tonic-gate ire->ire_ipif->ipif_ire_cnt++; 35357c478bd9Sstevel@tonic-gate if (ire->ire_stq != NULL) { 35367c478bd9Sstevel@tonic-gate stq_ill = (ill_t *)ire->ire_stq->q_ptr; 35377c478bd9Sstevel@tonic-gate stq_ill->ill_ire_cnt++; 35387c478bd9Sstevel@tonic-gate } 35397c478bd9Sstevel@tonic-gate } else { 35407c478bd9Sstevel@tonic-gate ASSERT(ire->ire_stq == NULL); 35417c478bd9Sstevel@tonic-gate } 35427c478bd9Sstevel@tonic-gate 35437c478bd9Sstevel@tonic-gate ire_atomic_end(irb_ptr, ire); 3544f4b3ec61Sdh155122 mutex_exit(&ipst->ips_ndp4->ndp_g_lock); 35457c478bd9Sstevel@tonic-gate 35467c478bd9Sstevel@tonic-gate if (pire != NULL) { 35477c478bd9Sstevel@tonic-gate /* Assert that it is not removed from the list yet */ 35487c478bd9Sstevel@tonic-gate ASSERT(pire->ire_ptpn != NULL); 35497c478bd9Sstevel@tonic-gate IRB_REFRELE(pire->ire_bucket); 35507c478bd9Sstevel@tonic-gate ire_refrele(pire); 35517c478bd9Sstevel@tonic-gate } 35527c478bd9Sstevel@tonic-gate 35537c478bd9Sstevel@tonic-gate if (ire->ire_type != IRE_CACHE) { 35547c478bd9Sstevel@tonic-gate /* 3555c793af95Ssangeeta * For ire's with host mask see if there is an entry 35567c478bd9Sstevel@tonic-gate * in the cache. If there is one flush the whole cache as 35577c478bd9Sstevel@tonic-gate * there might be multiple entries due to RTF_MULTIRT (CGTP). 35587c478bd9Sstevel@tonic-gate * If no entry is found than there is no need to flush the 35597c478bd9Sstevel@tonic-gate * cache. 35607c478bd9Sstevel@tonic-gate */ 35617c478bd9Sstevel@tonic-gate if (ire->ire_mask == IP_HOST_MASK) { 35627c478bd9Sstevel@tonic-gate ire_t *lire; 35637c478bd9Sstevel@tonic-gate lire = ire_ctable_lookup(ire->ire_addr, NULL, IRE_CACHE, 3564f4b3ec61Sdh155122 NULL, ALL_ZONES, NULL, MATCH_IRE_TYPE, ipst); 35657c478bd9Sstevel@tonic-gate if (lire != NULL) { 35667c478bd9Sstevel@tonic-gate ire_refrele(lire); 35677c478bd9Sstevel@tonic-gate ire_flush_cache_v4(ire, IRE_FLUSH_ADD); 35687c478bd9Sstevel@tonic-gate } 35697c478bd9Sstevel@tonic-gate } else { 35707c478bd9Sstevel@tonic-gate ire_flush_cache_v4(ire, IRE_FLUSH_ADD); 35717c478bd9Sstevel@tonic-gate } 35727c478bd9Sstevel@tonic-gate } 35737c478bd9Sstevel@tonic-gate /* 35747c478bd9Sstevel@tonic-gate * We had to delay the fast path probe until the ire is inserted 35757c478bd9Sstevel@tonic-gate * in the list. Otherwise the fast path ack won't find the ire in 35767c478bd9Sstevel@tonic-gate * the table. 35777c478bd9Sstevel@tonic-gate */ 3578516bda92Ssowmini if (ire->ire_type == IRE_CACHE || 3579516bda92Ssowmini (ire->ire_type == IRE_BROADCAST && ire->ire_stq != NULL)) { 3580516bda92Ssowmini ASSERT(ire->ire_nce != NULL); 3581*54da8755Ssowmini if (ire->ire_nce->nce_state == ND_REACHABLE) 3582516bda92Ssowmini nce_fastpath(ire->ire_nce); 3583516bda92Ssowmini } 35847c478bd9Sstevel@tonic-gate if (ire->ire_ipif != NULL) 35857c478bd9Sstevel@tonic-gate ASSERT(!MUTEX_HELD(&ire->ire_ipif->ipif_ill->ill_lock)); 35867c478bd9Sstevel@tonic-gate *ire_p = ire; 3587c793af95Ssangeeta if (need_refrele) { 3588c793af95Ssangeeta IRB_REFRELE(irb_ptr); 3589c793af95Ssangeeta } 35907c478bd9Sstevel@tonic-gate return (0); 35917c478bd9Sstevel@tonic-gate } 35927c478bd9Sstevel@tonic-gate 35937c478bd9Sstevel@tonic-gate /* 35947c478bd9Sstevel@tonic-gate * IRB_REFRELE is the only caller of the function. ire_unlink calls to 35957c478bd9Sstevel@tonic-gate * do the final cleanup for this ire. 35967c478bd9Sstevel@tonic-gate */ 35977c478bd9Sstevel@tonic-gate void 35987c478bd9Sstevel@tonic-gate ire_cleanup(ire_t *ire) 35997c478bd9Sstevel@tonic-gate { 36007c478bd9Sstevel@tonic-gate ire_t *ire_next; 3601f4b3ec61Sdh155122 ip_stack_t *ipst = ire->ire_ipst; 36027c478bd9Sstevel@tonic-gate 36037c478bd9Sstevel@tonic-gate ASSERT(ire != NULL); 36047c478bd9Sstevel@tonic-gate 36057c478bd9Sstevel@tonic-gate while (ire != NULL) { 36067c478bd9Sstevel@tonic-gate ire_next = ire->ire_next; 36077c478bd9Sstevel@tonic-gate if (ire->ire_ipversion == IPV4_VERSION) { 36087c478bd9Sstevel@tonic-gate ire_delete_v4(ire); 3609f4b3ec61Sdh155122 BUMP_IRE_STATS(ipst->ips_ire_stats_v4, 3610f4b3ec61Sdh155122 ire_stats_deleted); 36117c478bd9Sstevel@tonic-gate } else { 36127c478bd9Sstevel@tonic-gate ASSERT(ire->ire_ipversion == IPV6_VERSION); 36137c478bd9Sstevel@tonic-gate ire_delete_v6(ire); 3614f4b3ec61Sdh155122 BUMP_IRE_STATS(ipst->ips_ire_stats_v6, 3615f4b3ec61Sdh155122 ire_stats_deleted); 36167c478bd9Sstevel@tonic-gate } 36177c478bd9Sstevel@tonic-gate /* 36187c478bd9Sstevel@tonic-gate * Now it's really out of the list. Before doing the 36197c478bd9Sstevel@tonic-gate * REFRELE, set ire_next to NULL as ire_inactive asserts 36207c478bd9Sstevel@tonic-gate * so. 36217c478bd9Sstevel@tonic-gate */ 36227c478bd9Sstevel@tonic-gate ire->ire_next = NULL; 36237c478bd9Sstevel@tonic-gate IRE_REFRELE_NOTR(ire); 36247c478bd9Sstevel@tonic-gate ire = ire_next; 36257c478bd9Sstevel@tonic-gate } 36267c478bd9Sstevel@tonic-gate } 36277c478bd9Sstevel@tonic-gate 36287c478bd9Sstevel@tonic-gate /* 36297c478bd9Sstevel@tonic-gate * IRB_REFRELE is the only caller of the function. It calls to unlink 36307c478bd9Sstevel@tonic-gate * all the CONDEMNED ires from this bucket. 36317c478bd9Sstevel@tonic-gate */ 36327c478bd9Sstevel@tonic-gate ire_t * 36337c478bd9Sstevel@tonic-gate ire_unlink(irb_t *irb) 36347c478bd9Sstevel@tonic-gate { 36357c478bd9Sstevel@tonic-gate ire_t *ire; 36367c478bd9Sstevel@tonic-gate ire_t *ire1; 36377c478bd9Sstevel@tonic-gate ire_t **ptpn; 36387c478bd9Sstevel@tonic-gate ire_t *ire_list = NULL; 36397c478bd9Sstevel@tonic-gate 36407c478bd9Sstevel@tonic-gate ASSERT(RW_WRITE_HELD(&irb->irb_lock)); 3641c793af95Ssangeeta ASSERT(((irb->irb_marks & IRB_MARK_FTABLE) && irb->irb_refcnt == 1) || 3642c793af95Ssangeeta (irb->irb_refcnt == 0)); 3643c793af95Ssangeeta ASSERT(irb->irb_marks & IRB_MARK_CONDEMNED); 36447c478bd9Sstevel@tonic-gate ASSERT(irb->irb_ire != NULL); 36457c478bd9Sstevel@tonic-gate 36467c478bd9Sstevel@tonic-gate for (ire = irb->irb_ire; ire != NULL; ire = ire1) { 3647f4b3ec61Sdh155122 ip_stack_t *ipst = ire->ire_ipst; 3648f4b3ec61Sdh155122 36497c478bd9Sstevel@tonic-gate ire1 = ire->ire_next; 36507c478bd9Sstevel@tonic-gate if (ire->ire_marks & IRE_MARK_CONDEMNED) { 36517c478bd9Sstevel@tonic-gate ptpn = ire->ire_ptpn; 36527c478bd9Sstevel@tonic-gate ire1 = ire->ire_next; 36537c478bd9Sstevel@tonic-gate if (ire1) 36547c478bd9Sstevel@tonic-gate ire1->ire_ptpn = ptpn; 36557c478bd9Sstevel@tonic-gate *ptpn = ire1; 36567c478bd9Sstevel@tonic-gate ire->ire_ptpn = NULL; 36577c478bd9Sstevel@tonic-gate ire->ire_next = NULL; 36587c478bd9Sstevel@tonic-gate if (ire->ire_type == IRE_DEFAULT) { 36597c478bd9Sstevel@tonic-gate /* 36607c478bd9Sstevel@tonic-gate * IRE is out of the list. We need to adjust 36617c478bd9Sstevel@tonic-gate * the accounting before the caller drops 36627c478bd9Sstevel@tonic-gate * the lock. 36637c478bd9Sstevel@tonic-gate */ 36647c478bd9Sstevel@tonic-gate if (ire->ire_ipversion == IPV6_VERSION) { 3665f4b3ec61Sdh155122 ASSERT(ipst-> 3666f4b3ec61Sdh155122 ips_ipv6_ire_default_count != 3667f4b3ec61Sdh155122 0); 3668f4b3ec61Sdh155122 ipst->ips_ipv6_ire_default_count--; 36697c478bd9Sstevel@tonic-gate } 36707c478bd9Sstevel@tonic-gate } 36717c478bd9Sstevel@tonic-gate /* 36727c478bd9Sstevel@tonic-gate * We need to call ire_delete_v4 or ire_delete_v6 36737c478bd9Sstevel@tonic-gate * to clean up the cache or the redirects pointing at 36747c478bd9Sstevel@tonic-gate * the default gateway. We need to drop the lock 36757c478bd9Sstevel@tonic-gate * as ire_flush_cache/ire_delete_host_redircts require 36767c478bd9Sstevel@tonic-gate * so. But we can't drop the lock, as ire_unlink needs 36777c478bd9Sstevel@tonic-gate * to atomically remove the ires from the list. 36787c478bd9Sstevel@tonic-gate * So, create a temporary list of CONDEMNED ires 36797c478bd9Sstevel@tonic-gate * for doing ire_delete_v4/ire_delete_v6 operations 36807c478bd9Sstevel@tonic-gate * later on. 36817c478bd9Sstevel@tonic-gate */ 36827c478bd9Sstevel@tonic-gate ire->ire_next = ire_list; 36837c478bd9Sstevel@tonic-gate ire_list = ire; 36847c478bd9Sstevel@tonic-gate } 36857c478bd9Sstevel@tonic-gate } 3686c793af95Ssangeeta irb->irb_marks &= ~IRB_MARK_CONDEMNED; 36877c478bd9Sstevel@tonic-gate return (ire_list); 36887c478bd9Sstevel@tonic-gate } 36897c478bd9Sstevel@tonic-gate 36907c478bd9Sstevel@tonic-gate /* 36917c478bd9Sstevel@tonic-gate * Delete all the cache entries with this 'addr'. When IP gets a gratuitous 3692c793af95Ssangeeta * ARP message on any of its interface queue, it scans the nce table and 3693c793af95Ssangeeta * deletes and calls ndp_delete() for the appropriate nce. This action 3694c793af95Ssangeeta * also deletes all the neighbor/ire cache entries for that address. 3695c793af95Ssangeeta * This function is called from ip_arp_news in ip.c and also for 3696c793af95Ssangeeta * ARP ioctl processing in ip_if.c. ip_ire_clookup_and_delete returns 3697c793af95Ssangeeta * true if it finds a nce entry which is used by ip_arp_news to determine if 3698c793af95Ssangeeta * it needs to do an ire_walk_v4. The return value is also used for the 3699c793af95Ssangeeta * same purpose by ARP IOCTL processing * in ip_if.c when deleting 3700c793af95Ssangeeta * ARP entries. For SIOC*IFARP ioctls in addition to the address, 3701c793af95Ssangeeta * ip_if->ipif_ill also needs to be matched. 37027c478bd9Sstevel@tonic-gate */ 37037c478bd9Sstevel@tonic-gate boolean_t 3704f4b3ec61Sdh155122 ip_ire_clookup_and_delete(ipaddr_t addr, ipif_t *ipif, ip_stack_t *ipst) 37057c478bd9Sstevel@tonic-gate { 37067c478bd9Sstevel@tonic-gate ill_t *ill; 3707c793af95Ssangeeta nce_t *nce; 37087c478bd9Sstevel@tonic-gate 3709c793af95Ssangeeta ill = (ipif ? ipif->ipif_ill : NULL); 37107c478bd9Sstevel@tonic-gate 3711c793af95Ssangeeta if (ill != NULL) { 3712c793af95Ssangeeta /* 3713c793af95Ssangeeta * clean up the nce (and any relevant ire's) that matches 3714c793af95Ssangeeta * on addr and ill. 3715c793af95Ssangeeta */ 3716c793af95Ssangeeta nce = ndp_lookup_v4(ill, &addr, B_FALSE); 3717c793af95Ssangeeta if (nce != NULL) { 3718c793af95Ssangeeta ndp_delete(nce); 3719c793af95Ssangeeta return (B_TRUE); 37207c478bd9Sstevel@tonic-gate } 3721c793af95Ssangeeta } else { 3722c793af95Ssangeeta /* 3723c793af95Ssangeeta * ill is wildcard. clean up all nce's and 3724c793af95Ssangeeta * ire's that match on addr 3725c793af95Ssangeeta */ 3726c793af95Ssangeeta nce_clookup_t cl; 37277c478bd9Sstevel@tonic-gate 3728c793af95Ssangeeta cl.ncecl_addr = addr; 3729c793af95Ssangeeta cl.ncecl_found = B_FALSE; 37307c478bd9Sstevel@tonic-gate 3731f4b3ec61Sdh155122 ndp_walk_common(ipst->ips_ndp4, NULL, 3732c793af95Ssangeeta (pfi_t)ip_nce_clookup_and_delete, (uchar_t *)&cl, B_TRUE); 3733c793af95Ssangeeta 3734c793af95Ssangeeta /* 3735c793af95Ssangeeta * ncecl_found would be set by ip_nce_clookup_and_delete if 3736c793af95Ssangeeta * we found a matching nce. 3737c793af95Ssangeeta */ 3738c793af95Ssangeeta return (cl.ncecl_found); 3739c793af95Ssangeeta } 3740c793af95Ssangeeta return (B_FALSE); 3741c793af95Ssangeeta 3742c793af95Ssangeeta } 3743c793af95Ssangeeta 3744c793af95Ssangeeta /* Delete the supplied nce if its nce_addr matches the supplied address */ 3745c793af95Ssangeeta static void 3746c793af95Ssangeeta ip_nce_clookup_and_delete(nce_t *nce, void *arg) 3747c793af95Ssangeeta { 3748c793af95Ssangeeta nce_clookup_t *cl = (nce_clookup_t *)arg; 3749c793af95Ssangeeta ipaddr_t nce_addr; 3750c793af95Ssangeeta 3751c793af95Ssangeeta IN6_V4MAPPED_TO_IPADDR(&nce->nce_addr, nce_addr); 3752c793af95Ssangeeta if (nce_addr == cl->ncecl_addr) { 3753c793af95Ssangeeta cl->ncecl_found = B_TRUE; 3754c793af95Ssangeeta /* clean up the nce (and any relevant ire's) */ 3755c793af95Ssangeeta ndp_delete(nce); 3756c793af95Ssangeeta } 3757c793af95Ssangeeta } 3758c793af95Ssangeeta 3759c793af95Ssangeeta /* 3760c793af95Ssangeeta * Clean up the radix node for this ire. Must be called by IRB_REFRELE 3761c793af95Ssangeeta * when there are no ire's left in the bucket. Returns TRUE if the bucket 3762c793af95Ssangeeta * is deleted and freed. 3763c793af95Ssangeeta */ 3764c793af95Ssangeeta boolean_t 3765c793af95Ssangeeta irb_inactive(irb_t *irb) 3766c793af95Ssangeeta { 3767c793af95Ssangeeta struct rt_entry *rt; 3768c793af95Ssangeeta struct radix_node *rn; 3769f4b3ec61Sdh155122 ip_stack_t *ipst = irb->irb_ipst; 3770f4b3ec61Sdh155122 3771f4b3ec61Sdh155122 ASSERT(irb->irb_ipst != NULL); 3772c793af95Ssangeeta 3773c793af95Ssangeeta rt = IRB2RT(irb); 3774c793af95Ssangeeta rn = (struct radix_node *)rt; 3775c793af95Ssangeeta 3776c793af95Ssangeeta /* first remove it from the radix tree. */ 3777f4b3ec61Sdh155122 RADIX_NODE_HEAD_WLOCK(ipst->ips_ip_ftable); 3778c793af95Ssangeeta rw_enter(&irb->irb_lock, RW_WRITER); 3779c793af95Ssangeeta if (irb->irb_refcnt == 1 && irb->irb_nire == 0) { 3780f4b3ec61Sdh155122 rn = ipst->ips_ip_ftable->rnh_deladdr(rn->rn_key, rn->rn_mask, 3781f4b3ec61Sdh155122 ipst->ips_ip_ftable); 3782c793af95Ssangeeta DTRACE_PROBE1(irb__free, rt_t *, rt); 3783c793af95Ssangeeta ASSERT((void *)rn == (void *)rt); 3784c793af95Ssangeeta Free(rt, rt_entry_cache); 3785c793af95Ssangeeta /* irb_lock is freed */ 3786f4b3ec61Sdh155122 RADIX_NODE_HEAD_UNLOCK(ipst->ips_ip_ftable); 3787c793af95Ssangeeta return (B_TRUE); 3788c793af95Ssangeeta } 3789c793af95Ssangeeta rw_exit(&irb->irb_lock); 3790f4b3ec61Sdh155122 RADIX_NODE_HEAD_UNLOCK(ipst->ips_ip_ftable); 3791c793af95Ssangeeta return (B_FALSE); 37927c478bd9Sstevel@tonic-gate } 37937c478bd9Sstevel@tonic-gate 37947c478bd9Sstevel@tonic-gate /* 37957c478bd9Sstevel@tonic-gate * Delete the specified IRE. 37967c478bd9Sstevel@tonic-gate */ 37977c478bd9Sstevel@tonic-gate void 37987c478bd9Sstevel@tonic-gate ire_delete(ire_t *ire) 37997c478bd9Sstevel@tonic-gate { 38007c478bd9Sstevel@tonic-gate ire_t *ire1; 38017c478bd9Sstevel@tonic-gate ire_t **ptpn; 38027c478bd9Sstevel@tonic-gate irb_t *irb; 3803f4b3ec61Sdh155122 ip_stack_t *ipst = ire->ire_ipst; 38047c478bd9Sstevel@tonic-gate 3805c793af95Ssangeeta if ((irb = ire->ire_bucket) == NULL) { 38067c478bd9Sstevel@tonic-gate /* 38077c478bd9Sstevel@tonic-gate * It was never inserted in the list. Should call REFRELE 38087c478bd9Sstevel@tonic-gate * to free this IRE. 38097c478bd9Sstevel@tonic-gate */ 38107c478bd9Sstevel@tonic-gate IRE_REFRELE_NOTR(ire); 38117c478bd9Sstevel@tonic-gate return; 38127c478bd9Sstevel@tonic-gate } 38137c478bd9Sstevel@tonic-gate 38147c478bd9Sstevel@tonic-gate rw_enter(&irb->irb_lock, RW_WRITER); 38157c478bd9Sstevel@tonic-gate 3816c793af95Ssangeeta if (irb->irb_rr_origin == ire) { 3817c793af95Ssangeeta irb->irb_rr_origin = NULL; 3818c793af95Ssangeeta } 3819c793af95Ssangeeta 38207c478bd9Sstevel@tonic-gate /* 38217c478bd9Sstevel@tonic-gate * In case of V4 we might still be waiting for fastpath ack. 38227c478bd9Sstevel@tonic-gate */ 3823516bda92Ssowmini if (ire->ire_ipversion == IPV4_VERSION && 3824516bda92Ssowmini (ire->ire_type == IRE_CACHE || 3825516bda92Ssowmini (ire->ire_type == IRE_BROADCAST && ire->ire_stq != NULL))) { 3826516bda92Ssowmini ASSERT(ire->ire_nce != NULL); 3827516bda92Ssowmini nce_fastpath_list_delete(ire->ire_nce); 38287c478bd9Sstevel@tonic-gate } 38297c478bd9Sstevel@tonic-gate 38307c478bd9Sstevel@tonic-gate if (ire->ire_ptpn == NULL) { 38317c478bd9Sstevel@tonic-gate /* 38327c478bd9Sstevel@tonic-gate * Some other thread has removed us from the list. 38337c478bd9Sstevel@tonic-gate * It should have done the REFRELE for us. 38347c478bd9Sstevel@tonic-gate */ 38357c478bd9Sstevel@tonic-gate rw_exit(&irb->irb_lock); 38367c478bd9Sstevel@tonic-gate return; 38377c478bd9Sstevel@tonic-gate } 38387c478bd9Sstevel@tonic-gate 38397c478bd9Sstevel@tonic-gate if (irb->irb_refcnt != 0) { 38407c478bd9Sstevel@tonic-gate /* 38417c478bd9Sstevel@tonic-gate * The last thread to leave this bucket will 38427c478bd9Sstevel@tonic-gate * delete this ire. 38437c478bd9Sstevel@tonic-gate */ 38447c478bd9Sstevel@tonic-gate if (!(ire->ire_marks & IRE_MARK_CONDEMNED)) { 38457c478bd9Sstevel@tonic-gate irb->irb_ire_cnt--; 38467c478bd9Sstevel@tonic-gate if (ire->ire_marks & IRE_MARK_TEMPORARY) 38477c478bd9Sstevel@tonic-gate irb->irb_tmp_ire_cnt--; 38487c478bd9Sstevel@tonic-gate ire->ire_marks |= IRE_MARK_CONDEMNED; 38497c478bd9Sstevel@tonic-gate } 3850c793af95Ssangeeta irb->irb_marks |= IRB_MARK_CONDEMNED; 38517c478bd9Sstevel@tonic-gate rw_exit(&irb->irb_lock); 38527c478bd9Sstevel@tonic-gate return; 38537c478bd9Sstevel@tonic-gate } 38547c478bd9Sstevel@tonic-gate 38557c478bd9Sstevel@tonic-gate /* 38567c478bd9Sstevel@tonic-gate * Normally to delete an ire, we walk the bucket. While we 38577c478bd9Sstevel@tonic-gate * walk the bucket, we normally bump up irb_refcnt and hence 38587c478bd9Sstevel@tonic-gate * we return from above where we mark CONDEMNED and the ire 38597c478bd9Sstevel@tonic-gate * gets deleted from ire_unlink. This case is where somebody 38607c478bd9Sstevel@tonic-gate * knows the ire e.g by doing a lookup, and wants to delete the 38617c478bd9Sstevel@tonic-gate * IRE. irb_refcnt would be 0 in this case if nobody is walking 38627c478bd9Sstevel@tonic-gate * the bucket. 38637c478bd9Sstevel@tonic-gate */ 38647c478bd9Sstevel@tonic-gate ptpn = ire->ire_ptpn; 38657c478bd9Sstevel@tonic-gate ire1 = ire->ire_next; 38667c478bd9Sstevel@tonic-gate if (ire1 != NULL) 38677c478bd9Sstevel@tonic-gate ire1->ire_ptpn = ptpn; 38687c478bd9Sstevel@tonic-gate ASSERT(ptpn != NULL); 38697c478bd9Sstevel@tonic-gate *ptpn = ire1; 38707c478bd9Sstevel@tonic-gate ire->ire_ptpn = NULL; 38717c478bd9Sstevel@tonic-gate ire->ire_next = NULL; 38727c478bd9Sstevel@tonic-gate if (ire->ire_ipversion == IPV6_VERSION) { 3873f4b3ec61Sdh155122 BUMP_IRE_STATS(ipst->ips_ire_stats_v6, ire_stats_deleted); 38747c478bd9Sstevel@tonic-gate } else { 3875f4b3ec61Sdh155122 BUMP_IRE_STATS(ipst->ips_ire_stats_v4, ire_stats_deleted); 38767c478bd9Sstevel@tonic-gate } 38777c478bd9Sstevel@tonic-gate /* 38787c478bd9Sstevel@tonic-gate * ip_wput/ip_wput_v6 checks this flag to see whether 38797c478bd9Sstevel@tonic-gate * it should still use the cached ire or not. 38807c478bd9Sstevel@tonic-gate */ 38817c478bd9Sstevel@tonic-gate ire->ire_marks |= IRE_MARK_CONDEMNED; 38827c478bd9Sstevel@tonic-gate if (ire->ire_type == IRE_DEFAULT) { 38837c478bd9Sstevel@tonic-gate /* 38847c478bd9Sstevel@tonic-gate * IRE is out of the list. We need to adjust the 38857c478bd9Sstevel@tonic-gate * accounting before we drop the lock. 38867c478bd9Sstevel@tonic-gate */ 38877c478bd9Sstevel@tonic-gate if (ire->ire_ipversion == IPV6_VERSION) { 3888f4b3ec61Sdh155122 ASSERT(ipst->ips_ipv6_ire_default_count != 0); 3889f4b3ec61Sdh155122 ipst->ips_ipv6_ire_default_count--; 38907c478bd9Sstevel@tonic-gate } 38917c478bd9Sstevel@tonic-gate } 38927c478bd9Sstevel@tonic-gate irb->irb_ire_cnt--; 3893c793af95Ssangeeta 38947c478bd9Sstevel@tonic-gate if (ire->ire_marks & IRE_MARK_TEMPORARY) 38957c478bd9Sstevel@tonic-gate irb->irb_tmp_ire_cnt--; 38967c478bd9Sstevel@tonic-gate rw_exit(&irb->irb_lock); 38977c478bd9Sstevel@tonic-gate 38987c478bd9Sstevel@tonic-gate if (ire->ire_ipversion == IPV6_VERSION) { 38997c478bd9Sstevel@tonic-gate ire_delete_v6(ire); 39007c478bd9Sstevel@tonic-gate } else { 39017c478bd9Sstevel@tonic-gate ire_delete_v4(ire); 39027c478bd9Sstevel@tonic-gate } 39037c478bd9Sstevel@tonic-gate /* 39047c478bd9Sstevel@tonic-gate * We removed it from the list. Decrement the 39057c478bd9Sstevel@tonic-gate * reference count. 39067c478bd9Sstevel@tonic-gate */ 39077c478bd9Sstevel@tonic-gate IRE_REFRELE_NOTR(ire); 39087c478bd9Sstevel@tonic-gate } 39097c478bd9Sstevel@tonic-gate 39107c478bd9Sstevel@tonic-gate /* 39117c478bd9Sstevel@tonic-gate * Delete the specified IRE. 39127c478bd9Sstevel@tonic-gate * All calls should use ire_delete(). 39137c478bd9Sstevel@tonic-gate * Sometimes called as writer though not required by this function. 39147c478bd9Sstevel@tonic-gate * 39157c478bd9Sstevel@tonic-gate * NOTE : This function is called only if the ire was added 39167c478bd9Sstevel@tonic-gate * in the list. 39177c478bd9Sstevel@tonic-gate */ 39187c478bd9Sstevel@tonic-gate static void 39197c478bd9Sstevel@tonic-gate ire_delete_v4(ire_t *ire) 39207c478bd9Sstevel@tonic-gate { 3921f4b3ec61Sdh155122 ip_stack_t *ipst = ire->ire_ipst; 3922f4b3ec61Sdh155122 39237c478bd9Sstevel@tonic-gate ASSERT(ire->ire_refcnt >= 1); 39247c478bd9Sstevel@tonic-gate ASSERT(ire->ire_ipversion == IPV4_VERSION); 39257c478bd9Sstevel@tonic-gate 39267c478bd9Sstevel@tonic-gate if (ire->ire_type != IRE_CACHE) 39277c478bd9Sstevel@tonic-gate ire_flush_cache_v4(ire, IRE_FLUSH_DELETE); 39287c478bd9Sstevel@tonic-gate if (ire->ire_type == IRE_DEFAULT) { 39297c478bd9Sstevel@tonic-gate /* 39307c478bd9Sstevel@tonic-gate * when a default gateway is going away 39317c478bd9Sstevel@tonic-gate * delete all the host redirects pointing at that 39327c478bd9Sstevel@tonic-gate * gateway. 39337c478bd9Sstevel@tonic-gate */ 3934f4b3ec61Sdh155122 ire_delete_host_redirects(ire->ire_gateway_addr, ipst); 39357c478bd9Sstevel@tonic-gate } 39367c478bd9Sstevel@tonic-gate } 39377c478bd9Sstevel@tonic-gate 39387c478bd9Sstevel@tonic-gate /* 39397c478bd9Sstevel@tonic-gate * IRE_REFRELE/ire_refrele are the only caller of the function. It calls 39407c478bd9Sstevel@tonic-gate * to free the ire when the reference count goes to zero. 39417c478bd9Sstevel@tonic-gate */ 39427c478bd9Sstevel@tonic-gate void 39437c478bd9Sstevel@tonic-gate ire_inactive(ire_t *ire) 39447c478bd9Sstevel@tonic-gate { 39457c478bd9Sstevel@tonic-gate nce_t *nce; 39467c478bd9Sstevel@tonic-gate ill_t *ill = NULL; 39477c478bd9Sstevel@tonic-gate ill_t *stq_ill = NULL; 39487c478bd9Sstevel@tonic-gate ill_t *in_ill = NULL; 39497c478bd9Sstevel@tonic-gate ipif_t *ipif; 39507c478bd9Sstevel@tonic-gate boolean_t need_wakeup = B_FALSE; 3951c793af95Ssangeeta irb_t *irb; 3952f4b3ec61Sdh155122 ip_stack_t *ipst = ire->ire_ipst; 39537c478bd9Sstevel@tonic-gate 39547c478bd9Sstevel@tonic-gate ASSERT(ire->ire_refcnt == 0); 39557c478bd9Sstevel@tonic-gate ASSERT(ire->ire_ptpn == NULL); 39567c478bd9Sstevel@tonic-gate ASSERT(ire->ire_next == NULL); 39577c478bd9Sstevel@tonic-gate 3958c793af95Ssangeeta if (ire->ire_gw_secattr != NULL) { 3959c793af95Ssangeeta ire_gw_secattr_free(ire->ire_gw_secattr); 3960c793af95Ssangeeta ire->ire_gw_secattr = NULL; 3961c793af95Ssangeeta } 3962c793af95Ssangeeta 3963c793af95Ssangeeta if (ire->ire_mp != NULL) { 3964c793af95Ssangeeta ASSERT(ire->ire_bucket == NULL); 3965c793af95Ssangeeta mutex_destroy(&ire->ire_lock); 3966f4b3ec61Sdh155122 BUMP_IRE_STATS(ipst->ips_ire_stats_v4, ire_stats_freed); 3967c793af95Ssangeeta if (ire->ire_nce != NULL) 3968c793af95Ssangeeta NCE_REFRELE_NOTR(ire->ire_nce); 3969c793af95Ssangeeta freeb(ire->ire_mp); 3970c793af95Ssangeeta return; 3971c793af95Ssangeeta } 3972c793af95Ssangeeta 39737c478bd9Sstevel@tonic-gate if ((nce = ire->ire_nce) != NULL) { 39747c478bd9Sstevel@tonic-gate NCE_REFRELE_NOTR(nce); 39757c478bd9Sstevel@tonic-gate ire->ire_nce = NULL; 39767c478bd9Sstevel@tonic-gate } 3977c793af95Ssangeeta 39787c478bd9Sstevel@tonic-gate if (ire->ire_ipif == NULL) 39797c478bd9Sstevel@tonic-gate goto end; 39807c478bd9Sstevel@tonic-gate 39817c478bd9Sstevel@tonic-gate ipif = ire->ire_ipif; 39827c478bd9Sstevel@tonic-gate ill = ipif->ipif_ill; 39837c478bd9Sstevel@tonic-gate 39847c478bd9Sstevel@tonic-gate if (ire->ire_bucket == NULL) { 39857c478bd9Sstevel@tonic-gate /* The ire was never inserted in the table. */ 39867c478bd9Sstevel@tonic-gate goto end; 39877c478bd9Sstevel@tonic-gate } 39887c478bd9Sstevel@tonic-gate 39897c478bd9Sstevel@tonic-gate /* 39907c478bd9Sstevel@tonic-gate * ipif_ire_cnt on this ipif goes down by 1. If the ire_stq is 39917c478bd9Sstevel@tonic-gate * non-null ill_ire_count also goes down by 1. If the in_ill is 39927c478bd9Sstevel@tonic-gate * non-null either ill_mrtun_refcnt or ill_srcif_refcnt goes down by 1. 39937c478bd9Sstevel@tonic-gate * 39947c478bd9Sstevel@tonic-gate * The ipif that is associated with an ire is ire->ire_ipif and 39957c478bd9Sstevel@tonic-gate * hence when the ire->ire_ipif->ipif_ire_cnt drops to zero we call 39967c478bd9Sstevel@tonic-gate * ipif_ill_refrele_tail. Usually stq_ill is null or the same as 39977c478bd9Sstevel@tonic-gate * ire->ire_ipif->ipif_ill. So nothing more needs to be done. Only 39987c478bd9Sstevel@tonic-gate * in the case of IRE_CACHES when IPMP is used, stq_ill can be 39997c478bd9Sstevel@tonic-gate * different. If this is different from ire->ire_ipif->ipif_ill and 40007c478bd9Sstevel@tonic-gate * if the ill_ire_cnt on the stq_ill also has dropped to zero, we call 40017c478bd9Sstevel@tonic-gate * ipif_ill_refrele_tail on the stq_ill. If mobile ip is in use 40027c478bd9Sstevel@tonic-gate * in_ill could be non-null. If it is a reverse tunnel related ire 40037c478bd9Sstevel@tonic-gate * ill_mrtun_refcnt is non-zero. If it is forward tunnel related ire 40047c478bd9Sstevel@tonic-gate * ill_srcif_refcnt is non-null. 40057c478bd9Sstevel@tonic-gate */ 40067c478bd9Sstevel@tonic-gate 40077c478bd9Sstevel@tonic-gate if (ire->ire_stq != NULL) 40087c478bd9Sstevel@tonic-gate stq_ill = (ill_t *)ire->ire_stq->q_ptr; 40097c478bd9Sstevel@tonic-gate if (ire->ire_in_ill != NULL) 40107c478bd9Sstevel@tonic-gate in_ill = ire->ire_in_ill; 40117c478bd9Sstevel@tonic-gate 40127c478bd9Sstevel@tonic-gate if ((stq_ill == NULL || stq_ill == ill) && (in_ill == NULL)) { 40137c478bd9Sstevel@tonic-gate /* Optimize the most common case */ 40147c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 40157c478bd9Sstevel@tonic-gate ASSERT(ipif->ipif_ire_cnt != 0); 40167c478bd9Sstevel@tonic-gate ipif->ipif_ire_cnt--; 40177c478bd9Sstevel@tonic-gate if (ipif->ipif_ire_cnt == 0) 40187c478bd9Sstevel@tonic-gate need_wakeup = B_TRUE; 40197c478bd9Sstevel@tonic-gate if (stq_ill != NULL) { 40207c478bd9Sstevel@tonic-gate ASSERT(stq_ill->ill_ire_cnt != 0); 40217c478bd9Sstevel@tonic-gate stq_ill->ill_ire_cnt--; 40227c478bd9Sstevel@tonic-gate if (stq_ill->ill_ire_cnt == 0) 40237c478bd9Sstevel@tonic-gate need_wakeup = B_TRUE; 40247c478bd9Sstevel@tonic-gate } 40257c478bd9Sstevel@tonic-gate if (need_wakeup) { 40267c478bd9Sstevel@tonic-gate /* Drops the ill lock */ 40277c478bd9Sstevel@tonic-gate ipif_ill_refrele_tail(ill); 40287c478bd9Sstevel@tonic-gate } else { 40297c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 40307c478bd9Sstevel@tonic-gate } 40317c478bd9Sstevel@tonic-gate } else { 40327c478bd9Sstevel@tonic-gate /* 40337c478bd9Sstevel@tonic-gate * We can't grab all the ill locks at the same time. 40347c478bd9Sstevel@tonic-gate * It can lead to recursive lock enter in the call to 40357c478bd9Sstevel@tonic-gate * ipif_ill_refrele_tail and later. Instead do it 1 at 40367c478bd9Sstevel@tonic-gate * a time. 40377c478bd9Sstevel@tonic-gate */ 40387c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 40397c478bd9Sstevel@tonic-gate ASSERT(ipif->ipif_ire_cnt != 0); 40407c478bd9Sstevel@tonic-gate ipif->ipif_ire_cnt--; 40417c478bd9Sstevel@tonic-gate if (ipif->ipif_ire_cnt == 0) { 40427c478bd9Sstevel@tonic-gate /* Drops the lock */ 40437c478bd9Sstevel@tonic-gate ipif_ill_refrele_tail(ill); 40447c478bd9Sstevel@tonic-gate } else { 40457c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 40467c478bd9Sstevel@tonic-gate } 40477c478bd9Sstevel@tonic-gate if (stq_ill != NULL) { 40487c478bd9Sstevel@tonic-gate mutex_enter(&stq_ill->ill_lock); 40497c478bd9Sstevel@tonic-gate ASSERT(stq_ill->ill_ire_cnt != 0); 40507c478bd9Sstevel@tonic-gate stq_ill->ill_ire_cnt--; 40517c478bd9Sstevel@tonic-gate if (stq_ill->ill_ire_cnt == 0) { 40527c478bd9Sstevel@tonic-gate /* Drops the ill lock */ 40537c478bd9Sstevel@tonic-gate ipif_ill_refrele_tail(stq_ill); 40547c478bd9Sstevel@tonic-gate } else { 40557c478bd9Sstevel@tonic-gate mutex_exit(&stq_ill->ill_lock); 40567c478bd9Sstevel@tonic-gate } 40577c478bd9Sstevel@tonic-gate } 40587c478bd9Sstevel@tonic-gate if (in_ill != NULL) { 40597c478bd9Sstevel@tonic-gate mutex_enter(&in_ill->ill_lock); 40607c478bd9Sstevel@tonic-gate if (ire->ire_type == IRE_MIPRTUN) { 40617c478bd9Sstevel@tonic-gate /* 40627c478bd9Sstevel@tonic-gate * Mobile IP reverse tunnel ire. 40637c478bd9Sstevel@tonic-gate * Decrement table count and the 40647c478bd9Sstevel@tonic-gate * ill reference count. This signifies 40657c478bd9Sstevel@tonic-gate * mipagent is deleting reverse tunnel 40667c478bd9Sstevel@tonic-gate * route for a particular mobile node. 40677c478bd9Sstevel@tonic-gate */ 4068f4b3ec61Sdh155122 mutex_enter(&ipst->ips_ire_mrtun_lock); 4069f4b3ec61Sdh155122 ipst->ips_ire_mrtun_count--; 4070f4b3ec61Sdh155122 mutex_exit(&ipst->ips_ire_mrtun_lock); 40717c478bd9Sstevel@tonic-gate ASSERT(in_ill->ill_mrtun_refcnt != 0); 40727c478bd9Sstevel@tonic-gate in_ill->ill_mrtun_refcnt--; 40737c478bd9Sstevel@tonic-gate if (in_ill->ill_mrtun_refcnt == 0) { 40747c478bd9Sstevel@tonic-gate /* Drops the ill lock */ 40757c478bd9Sstevel@tonic-gate ipif_ill_refrele_tail(in_ill); 40767c478bd9Sstevel@tonic-gate } else { 40777c478bd9Sstevel@tonic-gate mutex_exit(&in_ill->ill_lock); 40787c478bd9Sstevel@tonic-gate } 40797c478bd9Sstevel@tonic-gate } else { 4080f4b3ec61Sdh155122 mutex_enter(&ipst->ips_ire_srcif_table_lock); 4081f4b3ec61Sdh155122 ipst->ips_ire_srcif_table_count--; 4082f4b3ec61Sdh155122 mutex_exit(&ipst->ips_ire_srcif_table_lock); 40837c478bd9Sstevel@tonic-gate ASSERT(in_ill->ill_srcif_refcnt != 0); 40847c478bd9Sstevel@tonic-gate in_ill->ill_srcif_refcnt--; 40857c478bd9Sstevel@tonic-gate if (in_ill->ill_srcif_refcnt == 0) { 40867c478bd9Sstevel@tonic-gate /* Drops the ill lock */ 40877c478bd9Sstevel@tonic-gate ipif_ill_refrele_tail(in_ill); 40887c478bd9Sstevel@tonic-gate } else { 40897c478bd9Sstevel@tonic-gate mutex_exit(&in_ill->ill_lock); 40907c478bd9Sstevel@tonic-gate } 40917c478bd9Sstevel@tonic-gate } 40927c478bd9Sstevel@tonic-gate } 40937c478bd9Sstevel@tonic-gate } 40947c478bd9Sstevel@tonic-gate end: 40957c478bd9Sstevel@tonic-gate /* This should be true for both V4 and V6 */ 40967c478bd9Sstevel@tonic-gate 4097c793af95Ssangeeta if ((ire->ire_type & IRE_FORWARDTABLE) && 4098c793af95Ssangeeta (ire->ire_ipversion == IPV4_VERSION) && 4099c793af95Ssangeeta ((irb = ire->ire_bucket) != NULL)) { 4100c793af95Ssangeeta rw_enter(&irb->irb_lock, RW_WRITER); 4101c793af95Ssangeeta irb->irb_nire--; 4102c793af95Ssangeeta /* 4103c793af95Ssangeeta * Instead of examining the conditions for freeing 4104c793af95Ssangeeta * the radix node here, we do it by calling 4105c793af95Ssangeeta * IRB_REFRELE which is a single point in the code 4106c793af95Ssangeeta * that embeds that logic. Bump up the refcnt to 4107c793af95Ssangeeta * be able to call IRB_REFRELE 4108c793af95Ssangeeta */ 4109c793af95Ssangeeta IRB_REFHOLD_LOCKED(irb); 4110c793af95Ssangeeta rw_exit(&irb->irb_lock); 4111c793af95Ssangeeta IRB_REFRELE(irb); 4112c793af95Ssangeeta } 41137c478bd9Sstevel@tonic-gate ire->ire_ipif = NULL; 41147c478bd9Sstevel@tonic-gate 41157c478bd9Sstevel@tonic-gate if (ire->ire_in_ill != NULL) { 41167c478bd9Sstevel@tonic-gate ire->ire_in_ill = NULL; 41177c478bd9Sstevel@tonic-gate } 41187c478bd9Sstevel@tonic-gate 41197c478bd9Sstevel@tonic-gate #ifdef IRE_DEBUG 41207c478bd9Sstevel@tonic-gate ire_trace_inactive(ire); 41217c478bd9Sstevel@tonic-gate #endif 41227c478bd9Sstevel@tonic-gate mutex_destroy(&ire->ire_lock); 41237c478bd9Sstevel@tonic-gate if (ire->ire_ipversion == IPV6_VERSION) { 4124f4b3ec61Sdh155122 BUMP_IRE_STATS(ipst->ips_ire_stats_v6, ire_stats_freed); 41257c478bd9Sstevel@tonic-gate } else { 4126f4b3ec61Sdh155122 BUMP_IRE_STATS(ipst->ips_ire_stats_v4, ire_stats_freed); 41277c478bd9Sstevel@tonic-gate } 4128c793af95Ssangeeta ASSERT(ire->ire_mp == NULL); 41297c478bd9Sstevel@tonic-gate /* Has been allocated out of the cache */ 41307c478bd9Sstevel@tonic-gate kmem_cache_free(ire_cache, ire); 41317c478bd9Sstevel@tonic-gate } 41327c478bd9Sstevel@tonic-gate 41337c478bd9Sstevel@tonic-gate /* 41346bdb8e66Sdd193516 * ire_walk routine to delete all IRE_CACHE/IRE_HOST types redirect 41356bdb8e66Sdd193516 * entries that have a given gateway address. 41367c478bd9Sstevel@tonic-gate */ 41377c478bd9Sstevel@tonic-gate void 41387c478bd9Sstevel@tonic-gate ire_delete_cache_gw(ire_t *ire, char *cp) 41397c478bd9Sstevel@tonic-gate { 41407c478bd9Sstevel@tonic-gate ipaddr_t gw_addr; 41417c478bd9Sstevel@tonic-gate 41426bdb8e66Sdd193516 if (!(ire->ire_type & IRE_CACHE) && 41436bdb8e66Sdd193516 !(ire->ire_flags & RTF_DYNAMIC)) 41447c478bd9Sstevel@tonic-gate return; 41457c478bd9Sstevel@tonic-gate 41467c478bd9Sstevel@tonic-gate bcopy(cp, &gw_addr, sizeof (gw_addr)); 41477c478bd9Sstevel@tonic-gate if (ire->ire_gateway_addr == gw_addr) { 41487c478bd9Sstevel@tonic-gate ip1dbg(("ire_delete_cache_gw: deleted 0x%x type %d to 0x%x\n", 41497c478bd9Sstevel@tonic-gate (int)ntohl(ire->ire_addr), ire->ire_type, 41507c478bd9Sstevel@tonic-gate (int)ntohl(ire->ire_gateway_addr))); 41517c478bd9Sstevel@tonic-gate ire_delete(ire); 41527c478bd9Sstevel@tonic-gate } 41537c478bd9Sstevel@tonic-gate } 41547c478bd9Sstevel@tonic-gate 41557c478bd9Sstevel@tonic-gate /* 41567c478bd9Sstevel@tonic-gate * Remove all IRE_CACHE entries that match the ire specified. 41577c478bd9Sstevel@tonic-gate * 41587c478bd9Sstevel@tonic-gate * The flag argument indicates if the flush request is due to addition 41597c478bd9Sstevel@tonic-gate * of new route (IRE_FLUSH_ADD) or deletion of old route (IRE_FLUSH_DELETE). 41607c478bd9Sstevel@tonic-gate * 41617c478bd9Sstevel@tonic-gate * This routine takes only the IREs from the forwarding table and flushes 41627c478bd9Sstevel@tonic-gate * the corresponding entries from the cache table. 41637c478bd9Sstevel@tonic-gate * 41647c478bd9Sstevel@tonic-gate * When flushing due to the deletion of an old route, it 41657c478bd9Sstevel@tonic-gate * just checks the cache handles (ire_phandle and ire_ihandle) and 41667c478bd9Sstevel@tonic-gate * deletes the ones that match. 41677c478bd9Sstevel@tonic-gate * 41687c478bd9Sstevel@tonic-gate * When flushing due to the creation of a new route, it checks 41697c478bd9Sstevel@tonic-gate * if a cache entry's address matches the one in the IRE and 41707c478bd9Sstevel@tonic-gate * that the cache entry's parent has a less specific mask than the 41717c478bd9Sstevel@tonic-gate * one in IRE. The destination of such a cache entry could be the 41727c478bd9Sstevel@tonic-gate * gateway for other cache entries, so we need to flush those as 41737c478bd9Sstevel@tonic-gate * well by looking for gateway addresses matching the IRE's address. 41747c478bd9Sstevel@tonic-gate */ 41757c478bd9Sstevel@tonic-gate void 41767c478bd9Sstevel@tonic-gate ire_flush_cache_v4(ire_t *ire, int flag) 41777c478bd9Sstevel@tonic-gate { 41787c478bd9Sstevel@tonic-gate int i; 41797c478bd9Sstevel@tonic-gate ire_t *cire; 41807c478bd9Sstevel@tonic-gate irb_t *irb; 4181f4b3ec61Sdh155122 ip_stack_t *ipst = ire->ire_ipst; 41827c478bd9Sstevel@tonic-gate 41837c478bd9Sstevel@tonic-gate if (ire->ire_type & IRE_CACHE) 41847c478bd9Sstevel@tonic-gate return; 41857c478bd9Sstevel@tonic-gate 41867c478bd9Sstevel@tonic-gate /* 41877c478bd9Sstevel@tonic-gate * If a default is just created, there is no point 41887c478bd9Sstevel@tonic-gate * in going through the cache, as there will not be any 41897c478bd9Sstevel@tonic-gate * cached ires. 41907c478bd9Sstevel@tonic-gate */ 41917c478bd9Sstevel@tonic-gate if (ire->ire_type == IRE_DEFAULT && flag == IRE_FLUSH_ADD) 41927c478bd9Sstevel@tonic-gate return; 41937c478bd9Sstevel@tonic-gate if (flag == IRE_FLUSH_ADD) { 41947c478bd9Sstevel@tonic-gate /* 41957c478bd9Sstevel@tonic-gate * This selective flush is due to the addition of 41967c478bd9Sstevel@tonic-gate * new IRE. 41977c478bd9Sstevel@tonic-gate */ 4198f4b3ec61Sdh155122 for (i = 0; i < ipst->ips_ip_cache_table_size; i++) { 4199f4b3ec61Sdh155122 irb = &ipst->ips_ip_cache_table[i]; 42007c478bd9Sstevel@tonic-gate if ((cire = irb->irb_ire) == NULL) 42017c478bd9Sstevel@tonic-gate continue; 42027c478bd9Sstevel@tonic-gate IRB_REFHOLD(irb); 42037c478bd9Sstevel@tonic-gate for (cire = irb->irb_ire; cire != NULL; 42047c478bd9Sstevel@tonic-gate cire = cire->ire_next) { 42057c478bd9Sstevel@tonic-gate if (cire->ire_type != IRE_CACHE) 42067c478bd9Sstevel@tonic-gate continue; 42077c478bd9Sstevel@tonic-gate /* 42087c478bd9Sstevel@tonic-gate * If 'cire' belongs to the same subnet 42097c478bd9Sstevel@tonic-gate * as the new ire being added, and 'cire' 42107c478bd9Sstevel@tonic-gate * is derived from a prefix that is less 42117c478bd9Sstevel@tonic-gate * specific than the new ire being added, 42127c478bd9Sstevel@tonic-gate * we need to flush 'cire'; for instance, 42137c478bd9Sstevel@tonic-gate * when a new interface comes up. 42147c478bd9Sstevel@tonic-gate */ 42157c478bd9Sstevel@tonic-gate if (((cire->ire_addr & ire->ire_mask) == 42167c478bd9Sstevel@tonic-gate (ire->ire_addr & ire->ire_mask)) && 42177c478bd9Sstevel@tonic-gate (ip_mask_to_plen(cire->ire_cmask) <= 42187c478bd9Sstevel@tonic-gate ire->ire_masklen)) { 42197c478bd9Sstevel@tonic-gate ire_delete(cire); 42207c478bd9Sstevel@tonic-gate continue; 42217c478bd9Sstevel@tonic-gate } 42227c478bd9Sstevel@tonic-gate /* 42237c478bd9Sstevel@tonic-gate * This is the case when the ire_gateway_addr 42247c478bd9Sstevel@tonic-gate * of 'cire' belongs to the same subnet as 42257c478bd9Sstevel@tonic-gate * the new ire being added. 42267c478bd9Sstevel@tonic-gate * Flushing such ires is sometimes required to 42277c478bd9Sstevel@tonic-gate * avoid misrouting: say we have a machine with 42287c478bd9Sstevel@tonic-gate * two interfaces (I1 and I2), a default router 42297c478bd9Sstevel@tonic-gate * R on the I1 subnet, and a host route to an 42307c478bd9Sstevel@tonic-gate * off-link destination D with a gateway G on 42317c478bd9Sstevel@tonic-gate * the I2 subnet. 42327c478bd9Sstevel@tonic-gate * Under normal operation, we will have an 42337c478bd9Sstevel@tonic-gate * on-link cache entry for G and an off-link 42347c478bd9Sstevel@tonic-gate * cache entry for D with G as ire_gateway_addr, 42357c478bd9Sstevel@tonic-gate * traffic to D will reach its destination 42367c478bd9Sstevel@tonic-gate * through gateway G. 42377c478bd9Sstevel@tonic-gate * If the administrator does 'ifconfig I2 down', 42387c478bd9Sstevel@tonic-gate * the cache entries for D and G will be 42397c478bd9Sstevel@tonic-gate * flushed. However, G will now be resolved as 42407c478bd9Sstevel@tonic-gate * an off-link destination using R (the default 42417c478bd9Sstevel@tonic-gate * router) as gateway. Then D will also be 42427c478bd9Sstevel@tonic-gate * resolved as an off-link destination using G 42437c478bd9Sstevel@tonic-gate * as gateway - this behavior is due to 42447c478bd9Sstevel@tonic-gate * compatibility reasons, see comment in 42457c478bd9Sstevel@tonic-gate * ire_ihandle_lookup_offlink(). Traffic to D 42467c478bd9Sstevel@tonic-gate * will go to the router R and probably won't 42477c478bd9Sstevel@tonic-gate * reach the destination. 42487c478bd9Sstevel@tonic-gate * The administrator then does 'ifconfig I2 up'. 42497c478bd9Sstevel@tonic-gate * Since G is on the I2 subnet, this routine 42507c478bd9Sstevel@tonic-gate * will flush its cache entry. It must also 42517c478bd9Sstevel@tonic-gate * flush the cache entry for D, otherwise 42527c478bd9Sstevel@tonic-gate * traffic will stay misrouted until the IRE 42537c478bd9Sstevel@tonic-gate * times out. 42547c478bd9Sstevel@tonic-gate */ 42557c478bd9Sstevel@tonic-gate if ((cire->ire_gateway_addr & ire->ire_mask) == 42567c478bd9Sstevel@tonic-gate (ire->ire_addr & ire->ire_mask)) { 42577c478bd9Sstevel@tonic-gate ire_delete(cire); 42587c478bd9Sstevel@tonic-gate continue; 42597c478bd9Sstevel@tonic-gate } 42607c478bd9Sstevel@tonic-gate } 42617c478bd9Sstevel@tonic-gate IRB_REFRELE(irb); 42627c478bd9Sstevel@tonic-gate } 42637c478bd9Sstevel@tonic-gate } else { 42647c478bd9Sstevel@tonic-gate /* 42657c478bd9Sstevel@tonic-gate * delete the cache entries based on 42667c478bd9Sstevel@tonic-gate * handle in the IRE as this IRE is 42677c478bd9Sstevel@tonic-gate * being deleted/changed. 42687c478bd9Sstevel@tonic-gate */ 4269f4b3ec61Sdh155122 for (i = 0; i < ipst->ips_ip_cache_table_size; i++) { 4270f4b3ec61Sdh155122 irb = &ipst->ips_ip_cache_table[i]; 42717c478bd9Sstevel@tonic-gate if ((cire = irb->irb_ire) == NULL) 42727c478bd9Sstevel@tonic-gate continue; 42737c478bd9Sstevel@tonic-gate IRB_REFHOLD(irb); 42747c478bd9Sstevel@tonic-gate for (cire = irb->irb_ire; cire != NULL; 42757c478bd9Sstevel@tonic-gate cire = cire->ire_next) { 42767c478bd9Sstevel@tonic-gate if (cire->ire_type != IRE_CACHE) 42777c478bd9Sstevel@tonic-gate continue; 42787c478bd9Sstevel@tonic-gate if ((cire->ire_phandle == 0 || 42797c478bd9Sstevel@tonic-gate cire->ire_phandle != ire->ire_phandle) && 42807c478bd9Sstevel@tonic-gate (cire->ire_ihandle == 0 || 42817c478bd9Sstevel@tonic-gate cire->ire_ihandle != ire->ire_ihandle)) 42827c478bd9Sstevel@tonic-gate continue; 42837c478bd9Sstevel@tonic-gate ire_delete(cire); 42847c478bd9Sstevel@tonic-gate } 42857c478bd9Sstevel@tonic-gate IRB_REFRELE(irb); 42867c478bd9Sstevel@tonic-gate } 42877c478bd9Sstevel@tonic-gate } 42887c478bd9Sstevel@tonic-gate } 42897c478bd9Sstevel@tonic-gate 42907c478bd9Sstevel@tonic-gate /* 42917c478bd9Sstevel@tonic-gate * Matches the arguments passed with the values in the ire. 42927c478bd9Sstevel@tonic-gate * 42937c478bd9Sstevel@tonic-gate * Note: for match types that match using "ipif" passed in, ipif 42947c478bd9Sstevel@tonic-gate * must be checked for non-NULL before calling this routine. 42957c478bd9Sstevel@tonic-gate */ 4296c793af95Ssangeeta boolean_t 42977c478bd9Sstevel@tonic-gate ire_match_args(ire_t *ire, ipaddr_t addr, ipaddr_t mask, ipaddr_t gateway, 429845916cd2Sjpk int type, const ipif_t *ipif, zoneid_t zoneid, uint32_t ihandle, 429945916cd2Sjpk const ts_label_t *tsl, int match_flags) 43007c478bd9Sstevel@tonic-gate { 43017c478bd9Sstevel@tonic-gate ill_t *ire_ill = NULL, *dst_ill; 43027c478bd9Sstevel@tonic-gate ill_t *ipif_ill = NULL; 43037c478bd9Sstevel@tonic-gate ill_group_t *ire_ill_group = NULL; 43047c478bd9Sstevel@tonic-gate ill_group_t *ipif_ill_group = NULL; 43057c478bd9Sstevel@tonic-gate 43067c478bd9Sstevel@tonic-gate ASSERT(ire->ire_ipversion == IPV4_VERSION); 43077c478bd9Sstevel@tonic-gate ASSERT((ire->ire_addr & ~ire->ire_mask) == 0); 43087c478bd9Sstevel@tonic-gate ASSERT((!(match_flags & (MATCH_IRE_ILL|MATCH_IRE_ILL_GROUP))) || 43097c478bd9Sstevel@tonic-gate (ipif != NULL && !ipif->ipif_isv6)); 43107c478bd9Sstevel@tonic-gate ASSERT(!(match_flags & MATCH_IRE_WQ)); 43117c478bd9Sstevel@tonic-gate 43127c478bd9Sstevel@tonic-gate /* 43137c478bd9Sstevel@tonic-gate * HIDDEN cache entries have to be looked up specifically with 43147c478bd9Sstevel@tonic-gate * MATCH_IRE_MARK_HIDDEN. MATCH_IRE_MARK_HIDDEN is usually set 43157c478bd9Sstevel@tonic-gate * when the interface is FAILED or INACTIVE. In that case, 43167c478bd9Sstevel@tonic-gate * any IRE_CACHES that exists should be marked with 43177c478bd9Sstevel@tonic-gate * IRE_MARK_HIDDEN. So, we don't really need to match below 43187c478bd9Sstevel@tonic-gate * for IRE_MARK_HIDDEN. But we do so for consistency. 43197c478bd9Sstevel@tonic-gate */ 43207c478bd9Sstevel@tonic-gate if (!(match_flags & MATCH_IRE_MARK_HIDDEN) && 43217c478bd9Sstevel@tonic-gate (ire->ire_marks & IRE_MARK_HIDDEN)) 43227c478bd9Sstevel@tonic-gate return (B_FALSE); 43237c478bd9Sstevel@tonic-gate 432443d18f1cSpriyanka /* 432543d18f1cSpriyanka * MATCH_IRE_MARK_PRIVATE_ADDR is set when IP_NEXTHOP option 432643d18f1cSpriyanka * is used. In that case the routing table is bypassed and the 432743d18f1cSpriyanka * packets are sent directly to the specified nexthop. The 432843d18f1cSpriyanka * IRE_CACHE entry representing this route should be marked 432943d18f1cSpriyanka * with IRE_MARK_PRIVATE_ADDR. 433043d18f1cSpriyanka */ 433143d18f1cSpriyanka 433243d18f1cSpriyanka if (!(match_flags & MATCH_IRE_MARK_PRIVATE_ADDR) && 433343d18f1cSpriyanka (ire->ire_marks & IRE_MARK_PRIVATE_ADDR)) 433443d18f1cSpriyanka return (B_FALSE); 433543d18f1cSpriyanka 433645916cd2Sjpk if (zoneid != ALL_ZONES && zoneid != ire->ire_zoneid && 433745916cd2Sjpk ire->ire_zoneid != ALL_ZONES) { 43387c478bd9Sstevel@tonic-gate /* 43397c478bd9Sstevel@tonic-gate * If MATCH_IRE_ZONEONLY has been set and the supplied zoneid is 43407c478bd9Sstevel@tonic-gate * valid and does not match that of ire_zoneid, a failure to 43417c478bd9Sstevel@tonic-gate * match is reported at this point. Otherwise, since some IREs 43427c478bd9Sstevel@tonic-gate * that are available in the global zone can be used in local 43437c478bd9Sstevel@tonic-gate * zones, additional checks need to be performed: 43447c478bd9Sstevel@tonic-gate * 43457c478bd9Sstevel@tonic-gate * IRE_BROADCAST, IRE_CACHE and IRE_LOOPBACK 43467c478bd9Sstevel@tonic-gate * entries should never be matched in this situation. 43477c478bd9Sstevel@tonic-gate * 43487c478bd9Sstevel@tonic-gate * IRE entries that have an interface associated with them 43497c478bd9Sstevel@tonic-gate * should in general not match unless they are an IRE_LOCAL 43507c478bd9Sstevel@tonic-gate * or in the case when MATCH_IRE_DEFAULT has been set in 43517c478bd9Sstevel@tonic-gate * the caller. In the case of the former, checking of the 43527c478bd9Sstevel@tonic-gate * other fields supplied should take place. 43537c478bd9Sstevel@tonic-gate * 43547c478bd9Sstevel@tonic-gate * In the case where MATCH_IRE_DEFAULT has been set, 43557c478bd9Sstevel@tonic-gate * all of the ipif's associated with the IRE's ill are 43567c478bd9Sstevel@tonic-gate * checked to see if there is a matching zoneid. If any 43577c478bd9Sstevel@tonic-gate * one ipif has a matching zoneid, this IRE is a 43587c478bd9Sstevel@tonic-gate * potential candidate so checking of the other fields 43597c478bd9Sstevel@tonic-gate * takes place. 43607c478bd9Sstevel@tonic-gate * 43617c478bd9Sstevel@tonic-gate * In the case where the IRE_INTERFACE has a usable source 43627c478bd9Sstevel@tonic-gate * address (indicated by ill_usesrc_ifindex) in the 43637c478bd9Sstevel@tonic-gate * correct zone then it's permitted to return this IRE 43647c478bd9Sstevel@tonic-gate */ 43657c478bd9Sstevel@tonic-gate if (match_flags & MATCH_IRE_ZONEONLY) 43667c478bd9Sstevel@tonic-gate return (B_FALSE); 43677c478bd9Sstevel@tonic-gate if (ire->ire_type & (IRE_BROADCAST | IRE_CACHE | IRE_LOOPBACK)) 43687c478bd9Sstevel@tonic-gate return (B_FALSE); 43697c478bd9Sstevel@tonic-gate /* 43707c478bd9Sstevel@tonic-gate * Note, IRE_INTERFACE can have the stq as NULL. For 43717c478bd9Sstevel@tonic-gate * example, if the default multicast route is tied to 43727c478bd9Sstevel@tonic-gate * the loopback address. 43737c478bd9Sstevel@tonic-gate */ 43747c478bd9Sstevel@tonic-gate if ((ire->ire_type & IRE_INTERFACE) && 43757c478bd9Sstevel@tonic-gate (ire->ire_stq != NULL)) { 43767c478bd9Sstevel@tonic-gate dst_ill = (ill_t *)ire->ire_stq->q_ptr; 43777c478bd9Sstevel@tonic-gate /* 43787c478bd9Sstevel@tonic-gate * If there is a usable source address in the 43797c478bd9Sstevel@tonic-gate * zone, then it's ok to return an 43807c478bd9Sstevel@tonic-gate * IRE_INTERFACE 43817c478bd9Sstevel@tonic-gate */ 43827c478bd9Sstevel@tonic-gate if (ipif_usesrc_avail(dst_ill, zoneid)) { 43837c478bd9Sstevel@tonic-gate ip3dbg(("ire_match_args: dst_ill %p match %d\n", 43847c478bd9Sstevel@tonic-gate (void *)dst_ill, 43857c478bd9Sstevel@tonic-gate (ire->ire_addr == (addr & mask)))); 43867c478bd9Sstevel@tonic-gate } else { 43877c478bd9Sstevel@tonic-gate ip3dbg(("ire_match_args: src_ipif NULL" 43887c478bd9Sstevel@tonic-gate " dst_ill %p\n", (void *)dst_ill)); 43897c478bd9Sstevel@tonic-gate return (B_FALSE); 43907c478bd9Sstevel@tonic-gate } 43917c478bd9Sstevel@tonic-gate } 43927c478bd9Sstevel@tonic-gate if (ire->ire_ipif != NULL && ire->ire_type != IRE_LOCAL && 43937c478bd9Sstevel@tonic-gate !(ire->ire_type & IRE_INTERFACE)) { 43947c478bd9Sstevel@tonic-gate ipif_t *tipif; 43957c478bd9Sstevel@tonic-gate 43967c478bd9Sstevel@tonic-gate if ((match_flags & MATCH_IRE_DEFAULT) == 0) { 43977c478bd9Sstevel@tonic-gate return (B_FALSE); 43987c478bd9Sstevel@tonic-gate } 43997c478bd9Sstevel@tonic-gate mutex_enter(&ire->ire_ipif->ipif_ill->ill_lock); 44007c478bd9Sstevel@tonic-gate for (tipif = ire->ire_ipif->ipif_ill->ill_ipif; 44017c478bd9Sstevel@tonic-gate tipif != NULL; tipif = tipif->ipif_next) { 44027c478bd9Sstevel@tonic-gate if (IPIF_CAN_LOOKUP(tipif) && 44037c478bd9Sstevel@tonic-gate (tipif->ipif_flags & IPIF_UP) && 440445916cd2Sjpk (tipif->ipif_zoneid == zoneid || 440545916cd2Sjpk tipif->ipif_zoneid == ALL_ZONES)) 44067c478bd9Sstevel@tonic-gate break; 44077c478bd9Sstevel@tonic-gate } 44087c478bd9Sstevel@tonic-gate mutex_exit(&ire->ire_ipif->ipif_ill->ill_lock); 44097c478bd9Sstevel@tonic-gate if (tipif == NULL) { 44107c478bd9Sstevel@tonic-gate return (B_FALSE); 44117c478bd9Sstevel@tonic-gate } 44127c478bd9Sstevel@tonic-gate } 44137c478bd9Sstevel@tonic-gate } 44147c478bd9Sstevel@tonic-gate 44157c478bd9Sstevel@tonic-gate /* 44167c478bd9Sstevel@tonic-gate * For IRE_CACHES, MATCH_IRE_ILL/ILL_GROUP really means that 44177c478bd9Sstevel@tonic-gate * somebody wants to send out on a particular interface which 44187c478bd9Sstevel@tonic-gate * is given by ire_stq and hence use ire_stq to derive the ill 44197c478bd9Sstevel@tonic-gate * value. ire_ipif for IRE_CACHES is just the means of getting 44207c478bd9Sstevel@tonic-gate * a source address i.e ire_src_addr = ire->ire_ipif->ipif_src_addr. 44217c478bd9Sstevel@tonic-gate * ire_to_ill does the right thing for this. 44227c478bd9Sstevel@tonic-gate */ 44237c478bd9Sstevel@tonic-gate if (match_flags & (MATCH_IRE_ILL|MATCH_IRE_ILL_GROUP)) { 44247c478bd9Sstevel@tonic-gate ire_ill = ire_to_ill(ire); 44257c478bd9Sstevel@tonic-gate if (ire_ill != NULL) 44267c478bd9Sstevel@tonic-gate ire_ill_group = ire_ill->ill_group; 44277c478bd9Sstevel@tonic-gate ipif_ill = ipif->ipif_ill; 44287c478bd9Sstevel@tonic-gate ipif_ill_group = ipif_ill->ill_group; 44297c478bd9Sstevel@tonic-gate } 44307c478bd9Sstevel@tonic-gate 44317c478bd9Sstevel@tonic-gate if ((ire->ire_addr == (addr & mask)) && 44327c478bd9Sstevel@tonic-gate ((!(match_flags & MATCH_IRE_GW)) || 44337c478bd9Sstevel@tonic-gate (ire->ire_gateway_addr == gateway)) && 44347c478bd9Sstevel@tonic-gate ((!(match_flags & MATCH_IRE_TYPE)) || 44357c478bd9Sstevel@tonic-gate (ire->ire_type & type)) && 44367c478bd9Sstevel@tonic-gate ((!(match_flags & MATCH_IRE_SRC)) || 44377c478bd9Sstevel@tonic-gate (ire->ire_src_addr == ipif->ipif_src_addr)) && 44387c478bd9Sstevel@tonic-gate ((!(match_flags & MATCH_IRE_IPIF)) || 44397c478bd9Sstevel@tonic-gate (ire->ire_ipif == ipif)) && 44407c478bd9Sstevel@tonic-gate ((!(match_flags & MATCH_IRE_MARK_HIDDEN)) || 44417c478bd9Sstevel@tonic-gate (ire->ire_type != IRE_CACHE || 44427c478bd9Sstevel@tonic-gate ire->ire_marks & IRE_MARK_HIDDEN)) && 444343d18f1cSpriyanka ((!(match_flags & MATCH_IRE_MARK_PRIVATE_ADDR)) || 444443d18f1cSpriyanka (ire->ire_type != IRE_CACHE || 444543d18f1cSpriyanka ire->ire_marks & IRE_MARK_PRIVATE_ADDR)) && 44467c478bd9Sstevel@tonic-gate ((!(match_flags & MATCH_IRE_ILL)) || 44477c478bd9Sstevel@tonic-gate (ire_ill == ipif_ill)) && 44487c478bd9Sstevel@tonic-gate ((!(match_flags & MATCH_IRE_IHANDLE)) || 44497c478bd9Sstevel@tonic-gate (ire->ire_ihandle == ihandle)) && 4450c793af95Ssangeeta ((!(match_flags & MATCH_IRE_MASK)) || 4451c793af95Ssangeeta (ire->ire_mask == mask)) && 44527c478bd9Sstevel@tonic-gate ((!(match_flags & MATCH_IRE_ILL_GROUP)) || 44537c478bd9Sstevel@tonic-gate (ire_ill == ipif_ill) || 44547c478bd9Sstevel@tonic-gate (ire_ill_group != NULL && 445545916cd2Sjpk ire_ill_group == ipif_ill_group)) && 445645916cd2Sjpk ((!(match_flags & MATCH_IRE_SECATTR)) || 445745916cd2Sjpk (!is_system_labeled()) || 445845916cd2Sjpk (tsol_ire_match_gwattr(ire, tsl) == 0))) { 44597c478bd9Sstevel@tonic-gate /* We found the matched IRE */ 44607c478bd9Sstevel@tonic-gate return (B_TRUE); 44617c478bd9Sstevel@tonic-gate } 44627c478bd9Sstevel@tonic-gate return (B_FALSE); 44637c478bd9Sstevel@tonic-gate } 44647c478bd9Sstevel@tonic-gate 44657c478bd9Sstevel@tonic-gate 44667c478bd9Sstevel@tonic-gate /* 44677c478bd9Sstevel@tonic-gate * Lookup for a route in all the tables 44687c478bd9Sstevel@tonic-gate */ 44697c478bd9Sstevel@tonic-gate ire_t * 44707c478bd9Sstevel@tonic-gate ire_route_lookup(ipaddr_t addr, ipaddr_t mask, ipaddr_t gateway, 447145916cd2Sjpk int type, const ipif_t *ipif, ire_t **pire, zoneid_t zoneid, 4472f4b3ec61Sdh155122 const ts_label_t *tsl, int flags, ip_stack_t *ipst) 44737c478bd9Sstevel@tonic-gate { 44747c478bd9Sstevel@tonic-gate ire_t *ire = NULL; 44757c478bd9Sstevel@tonic-gate 44767c478bd9Sstevel@tonic-gate /* 44777c478bd9Sstevel@tonic-gate * ire_match_args() will dereference ipif MATCH_IRE_SRC or 44787c478bd9Sstevel@tonic-gate * MATCH_IRE_ILL is set. 44797c478bd9Sstevel@tonic-gate */ 44807c478bd9Sstevel@tonic-gate if ((flags & (MATCH_IRE_SRC | MATCH_IRE_ILL | MATCH_IRE_ILL_GROUP)) && 44817c478bd9Sstevel@tonic-gate (ipif == NULL)) 44827c478bd9Sstevel@tonic-gate return (NULL); 44837c478bd9Sstevel@tonic-gate 44847c478bd9Sstevel@tonic-gate /* 44857c478bd9Sstevel@tonic-gate * might be asking for a cache lookup, 44867c478bd9Sstevel@tonic-gate * This is not best way to lookup cache, 44877c478bd9Sstevel@tonic-gate * user should call ire_cache_lookup directly. 44887c478bd9Sstevel@tonic-gate * 44897c478bd9Sstevel@tonic-gate * If MATCH_IRE_TYPE was set, first lookup in the cache table and then 44907c478bd9Sstevel@tonic-gate * in the forwarding table, if the applicable type flags were set. 44917c478bd9Sstevel@tonic-gate */ 44927c478bd9Sstevel@tonic-gate if ((flags & MATCH_IRE_TYPE) == 0 || (type & IRE_CACHETABLE) != 0) { 44937c478bd9Sstevel@tonic-gate ire = ire_ctable_lookup(addr, gateway, type, ipif, zoneid, 4494f4b3ec61Sdh155122 tsl, flags, ipst); 44957c478bd9Sstevel@tonic-gate if (ire != NULL) 44967c478bd9Sstevel@tonic-gate return (ire); 44977c478bd9Sstevel@tonic-gate } 44987c478bd9Sstevel@tonic-gate if ((flags & MATCH_IRE_TYPE) == 0 || (type & IRE_FORWARDTABLE) != 0) { 44997c478bd9Sstevel@tonic-gate ire = ire_ftable_lookup(addr, mask, gateway, type, ipif, pire, 4500f4b3ec61Sdh155122 zoneid, 0, tsl, flags, ipst); 45017c478bd9Sstevel@tonic-gate } 45027c478bd9Sstevel@tonic-gate return (ire); 45037c478bd9Sstevel@tonic-gate } 45047c478bd9Sstevel@tonic-gate 45057c478bd9Sstevel@tonic-gate 45067c478bd9Sstevel@tonic-gate /* 450745916cd2Sjpk * Delete the IRE cache for the gateway and all IRE caches whose 450845916cd2Sjpk * ire_gateway_addr points to this gateway, and allow them to 450945916cd2Sjpk * be created on demand by ip_newroute. 451045916cd2Sjpk */ 451145916cd2Sjpk void 4512f4b3ec61Sdh155122 ire_clookup_delete_cache_gw(ipaddr_t addr, zoneid_t zoneid, ip_stack_t *ipst) 451345916cd2Sjpk { 451445916cd2Sjpk irb_t *irb; 451545916cd2Sjpk ire_t *ire; 451645916cd2Sjpk 4517f4b3ec61Sdh155122 irb = &ipst->ips_ip_cache_table[IRE_ADDR_HASH(addr, 4518f4b3ec61Sdh155122 ipst->ips_ip_cache_table_size)]; 451945916cd2Sjpk IRB_REFHOLD(irb); 452045916cd2Sjpk for (ire = irb->irb_ire; ire != NULL; ire = ire->ire_next) { 452145916cd2Sjpk if (ire->ire_marks & IRE_MARK_CONDEMNED) 452245916cd2Sjpk continue; 452345916cd2Sjpk 452445916cd2Sjpk ASSERT(ire->ire_mask == IP_HOST_MASK); 452545916cd2Sjpk ASSERT(ire->ire_type != IRE_MIPRTUN && ire->ire_in_ill == NULL); 452645916cd2Sjpk if (ire_match_args(ire, addr, ire->ire_mask, 0, IRE_CACHE, 452745916cd2Sjpk NULL, zoneid, 0, NULL, MATCH_IRE_TYPE)) { 452845916cd2Sjpk ire_delete(ire); 452945916cd2Sjpk } 453045916cd2Sjpk } 453145916cd2Sjpk IRB_REFRELE(irb); 453245916cd2Sjpk 4533f4b3ec61Sdh155122 ire_walk_v4(ire_delete_cache_gw, &addr, zoneid, ipst); 453445916cd2Sjpk } 453545916cd2Sjpk 453645916cd2Sjpk /* 45377c478bd9Sstevel@tonic-gate * Looks up cache table for a route. 45387c478bd9Sstevel@tonic-gate * specific lookup can be indicated by 45397c478bd9Sstevel@tonic-gate * passing the MATCH_* flags and the 45407c478bd9Sstevel@tonic-gate * necessary parameters. 45417c478bd9Sstevel@tonic-gate */ 45427c478bd9Sstevel@tonic-gate ire_t * 454345916cd2Sjpk ire_ctable_lookup(ipaddr_t addr, ipaddr_t gateway, int type, const ipif_t *ipif, 4544f4b3ec61Sdh155122 zoneid_t zoneid, const ts_label_t *tsl, int flags, ip_stack_t *ipst) 45457c478bd9Sstevel@tonic-gate { 45467c478bd9Sstevel@tonic-gate irb_t *irb_ptr; 45477c478bd9Sstevel@tonic-gate ire_t *ire; 45487c478bd9Sstevel@tonic-gate 45497c478bd9Sstevel@tonic-gate /* 45507c478bd9Sstevel@tonic-gate * ire_match_args() will dereference ipif MATCH_IRE_SRC or 45517c478bd9Sstevel@tonic-gate * MATCH_IRE_ILL is set. 45527c478bd9Sstevel@tonic-gate */ 45537c478bd9Sstevel@tonic-gate if ((flags & (MATCH_IRE_SRC | MATCH_IRE_ILL | MATCH_IRE_ILL_GROUP)) && 45547c478bd9Sstevel@tonic-gate (ipif == NULL)) 45557c478bd9Sstevel@tonic-gate return (NULL); 45567c478bd9Sstevel@tonic-gate 4557f4b3ec61Sdh155122 irb_ptr = &ipst->ips_ip_cache_table[IRE_ADDR_HASH(addr, 4558f4b3ec61Sdh155122 ipst->ips_ip_cache_table_size)]; 45597c478bd9Sstevel@tonic-gate rw_enter(&irb_ptr->irb_lock, RW_READER); 45607c478bd9Sstevel@tonic-gate for (ire = irb_ptr->irb_ire; ire != NULL; ire = ire->ire_next) { 45617c478bd9Sstevel@tonic-gate if (ire->ire_marks & IRE_MARK_CONDEMNED) 45627c478bd9Sstevel@tonic-gate continue; 45637c478bd9Sstevel@tonic-gate ASSERT(ire->ire_mask == IP_HOST_MASK); 45647c478bd9Sstevel@tonic-gate ASSERT(ire->ire_type != IRE_MIPRTUN && ire->ire_in_ill == NULL); 45657c478bd9Sstevel@tonic-gate if (ire_match_args(ire, addr, ire->ire_mask, gateway, type, 456645916cd2Sjpk ipif, zoneid, 0, tsl, flags)) { 45677c478bd9Sstevel@tonic-gate IRE_REFHOLD(ire); 45687c478bd9Sstevel@tonic-gate rw_exit(&irb_ptr->irb_lock); 45697c478bd9Sstevel@tonic-gate return (ire); 45707c478bd9Sstevel@tonic-gate } 45717c478bd9Sstevel@tonic-gate } 45727c478bd9Sstevel@tonic-gate rw_exit(&irb_ptr->irb_lock); 45737c478bd9Sstevel@tonic-gate return (NULL); 45747c478bd9Sstevel@tonic-gate } 45757c478bd9Sstevel@tonic-gate 45767c478bd9Sstevel@tonic-gate /* 45775597b60aSnordmark * Check whether the IRE_LOCAL and the IRE potentially used to transmit 45785597b60aSnordmark * (could be an IRE_CACHE, IRE_BROADCAST, or IRE_INTERFACE) are part of 45795597b60aSnordmark * the same ill group. 45805597b60aSnordmark */ 45815597b60aSnordmark boolean_t 45825597b60aSnordmark ire_local_same_ill_group(ire_t *ire_local, ire_t *xmit_ire) 45835597b60aSnordmark { 45845597b60aSnordmark ill_t *recv_ill, *xmit_ill; 45855597b60aSnordmark ill_group_t *recv_group, *xmit_group; 45865597b60aSnordmark 45872bc4236aSnordmark ASSERT(ire_local->ire_type & (IRE_LOCAL|IRE_LOOPBACK)); 4588aa2eaee6Snordmark ASSERT(xmit_ire->ire_type & (IRE_CACHETABLE|IRE_INTERFACE)); 45895597b60aSnordmark 45902bc4236aSnordmark recv_ill = ire_to_ill(ire_local); 45912bc4236aSnordmark xmit_ill = ire_to_ill(xmit_ire); 45922bc4236aSnordmark 45932bc4236aSnordmark ASSERT(recv_ill != NULL); 45942bc4236aSnordmark ASSERT(xmit_ill != NULL); 45955597b60aSnordmark 45965597b60aSnordmark if (recv_ill == xmit_ill) 45975597b60aSnordmark return (B_TRUE); 45985597b60aSnordmark 45995597b60aSnordmark recv_group = recv_ill->ill_group; 46005597b60aSnordmark xmit_group = xmit_ill->ill_group; 46015597b60aSnordmark 46025597b60aSnordmark if (recv_group != NULL && recv_group == xmit_group) 46035597b60aSnordmark return (B_TRUE); 46045597b60aSnordmark 46055597b60aSnordmark return (B_FALSE); 46065597b60aSnordmark } 46075597b60aSnordmark 46085597b60aSnordmark /* 46095597b60aSnordmark * Check if the IRE_LOCAL uses the same ill (group) as another route would use. 4610aa2eaee6Snordmark * If there is no alternate route, or the alternate is a REJECT or BLACKHOLE, 4611aa2eaee6Snordmark * then we don't allow this IRE_LOCAL to be used. 46125597b60aSnordmark */ 46135597b60aSnordmark boolean_t 46145597b60aSnordmark ire_local_ok_across_zones(ire_t *ire_local, zoneid_t zoneid, void *addr, 4615f4b3ec61Sdh155122 const ts_label_t *tsl, ip_stack_t *ipst) 46165597b60aSnordmark { 46175597b60aSnordmark ire_t *alt_ire; 46185597b60aSnordmark boolean_t rval; 46195597b60aSnordmark 46205597b60aSnordmark if (ire_local->ire_ipversion == IPV4_VERSION) { 46215597b60aSnordmark alt_ire = ire_ftable_lookup(*((ipaddr_t *)addr), 0, 0, 0, NULL, 46225597b60aSnordmark NULL, zoneid, 0, tsl, 46235597b60aSnordmark MATCH_IRE_RECURSIVE | MATCH_IRE_DEFAULT | 4624f4b3ec61Sdh155122 MATCH_IRE_RJ_BHOLE, ipst); 46255597b60aSnordmark } else { 46265597b60aSnordmark alt_ire = ire_ftable_lookup_v6((in6_addr_t *)addr, NULL, NULL, 46275597b60aSnordmark 0, NULL, NULL, zoneid, 0, tsl, 46285597b60aSnordmark MATCH_IRE_RECURSIVE | MATCH_IRE_DEFAULT | 4629f4b3ec61Sdh155122 MATCH_IRE_RJ_BHOLE, ipst); 46305597b60aSnordmark } 46315597b60aSnordmark 46325597b60aSnordmark if (alt_ire == NULL) 46335597b60aSnordmark return (B_FALSE); 46345597b60aSnordmark 4635aa2eaee6Snordmark if (alt_ire->ire_flags & (RTF_REJECT|RTF_BLACKHOLE)) { 4636aa2eaee6Snordmark ire_refrele(alt_ire); 4637aa2eaee6Snordmark return (B_FALSE); 4638aa2eaee6Snordmark } 46395597b60aSnordmark rval = ire_local_same_ill_group(ire_local, alt_ire); 46405597b60aSnordmark 46415597b60aSnordmark ire_refrele(alt_ire); 46425597b60aSnordmark return (rval); 46435597b60aSnordmark } 46445597b60aSnordmark 46455597b60aSnordmark /* 46467c478bd9Sstevel@tonic-gate * Lookup cache. Don't return IRE_MARK_HIDDEN entries. Callers 46477c478bd9Sstevel@tonic-gate * should use ire_ctable_lookup with MATCH_IRE_MARK_HIDDEN to get 46487c478bd9Sstevel@tonic-gate * to the hidden ones. 46495597b60aSnordmark * 46505597b60aSnordmark * In general the zoneid has to match (where ALL_ZONES match all of them). 46515597b60aSnordmark * But for IRE_LOCAL we also need to handle the case where L2 should 46525597b60aSnordmark * conceptually loop back the packet. This is necessary since neither 46535597b60aSnordmark * Ethernet drivers nor Ethernet hardware loops back packets sent to their 46545597b60aSnordmark * own MAC address. This loopback is needed when the normal 46555597b60aSnordmark * routes (ignoring IREs with different zoneids) would send out the packet on 46565597b60aSnordmark * the same ill (or ill group) as the ill with which this IRE_LOCAL is 46575597b60aSnordmark * associated. 46585597b60aSnordmark * 46595597b60aSnordmark * Earlier versions of this code always matched an IRE_LOCAL independently of 46605597b60aSnordmark * the zoneid. We preserve that earlier behavior when 46615597b60aSnordmark * ip_restrict_interzone_loopback is turned off. 46627c478bd9Sstevel@tonic-gate */ 46637c478bd9Sstevel@tonic-gate ire_t * 4664f4b3ec61Sdh155122 ire_cache_lookup(ipaddr_t addr, zoneid_t zoneid, const ts_label_t *tsl, 4665f4b3ec61Sdh155122 ip_stack_t *ipst) 46667c478bd9Sstevel@tonic-gate { 46677c478bd9Sstevel@tonic-gate irb_t *irb_ptr; 46687c478bd9Sstevel@tonic-gate ire_t *ire; 46697c478bd9Sstevel@tonic-gate 4670f4b3ec61Sdh155122 irb_ptr = &ipst->ips_ip_cache_table[IRE_ADDR_HASH(addr, 4671f4b3ec61Sdh155122 ipst->ips_ip_cache_table_size)]; 46727c478bd9Sstevel@tonic-gate rw_enter(&irb_ptr->irb_lock, RW_READER); 46737c478bd9Sstevel@tonic-gate for (ire = irb_ptr->irb_ire; ire != NULL; ire = ire->ire_next) { 467443d18f1cSpriyanka if (ire->ire_marks & (IRE_MARK_CONDEMNED | 467543d18f1cSpriyanka IRE_MARK_HIDDEN | IRE_MARK_PRIVATE_ADDR)) { 46767c478bd9Sstevel@tonic-gate continue; 467743d18f1cSpriyanka } 46787c478bd9Sstevel@tonic-gate if (ire->ire_addr == addr) { 467945916cd2Sjpk /* 468045916cd2Sjpk * Finally, check if the security policy has any 468145916cd2Sjpk * restriction on using this route for the specified 468245916cd2Sjpk * message. 468345916cd2Sjpk */ 468445916cd2Sjpk if (tsl != NULL && 468545916cd2Sjpk ire->ire_gw_secattr != NULL && 468645916cd2Sjpk tsol_ire_match_gwattr(ire, tsl) != 0) { 468745916cd2Sjpk continue; 468845916cd2Sjpk } 468945916cd2Sjpk 46907c478bd9Sstevel@tonic-gate if (zoneid == ALL_ZONES || ire->ire_zoneid == zoneid || 46915597b60aSnordmark ire->ire_zoneid == ALL_ZONES) { 46925597b60aSnordmark IRE_REFHOLD(ire); 46935597b60aSnordmark rw_exit(&irb_ptr->irb_lock); 46945597b60aSnordmark return (ire); 46955597b60aSnordmark } 46965597b60aSnordmark 46975597b60aSnordmark if (ire->ire_type == IRE_LOCAL) { 4698f4b3ec61Sdh155122 if (ipst->ips_ip_restrict_interzone_loopback && 46995597b60aSnordmark !ire_local_ok_across_zones(ire, zoneid, 4700f4b3ec61Sdh155122 &addr, tsl, ipst)) 47015597b60aSnordmark continue; 47025597b60aSnordmark 47037c478bd9Sstevel@tonic-gate IRE_REFHOLD(ire); 47047c478bd9Sstevel@tonic-gate rw_exit(&irb_ptr->irb_lock); 47057c478bd9Sstevel@tonic-gate return (ire); 47067c478bd9Sstevel@tonic-gate } 47077c478bd9Sstevel@tonic-gate } 47087c478bd9Sstevel@tonic-gate } 47097c478bd9Sstevel@tonic-gate rw_exit(&irb_ptr->irb_lock); 47107c478bd9Sstevel@tonic-gate return (NULL); 47117c478bd9Sstevel@tonic-gate } 47127c478bd9Sstevel@tonic-gate 47137c478bd9Sstevel@tonic-gate /* 47147c478bd9Sstevel@tonic-gate * Locate the interface ire that is tied to the cache ire 'cire' via 47157c478bd9Sstevel@tonic-gate * cire->ire_ihandle. 47167c478bd9Sstevel@tonic-gate * 47177c478bd9Sstevel@tonic-gate * We are trying to create the cache ire for an offlink destn based 47187c478bd9Sstevel@tonic-gate * on the cache ire of the gateway in 'cire'. 'pire' is the prefix ire 47197c478bd9Sstevel@tonic-gate * as found by ip_newroute(). We are called from ip_newroute() in 47207c478bd9Sstevel@tonic-gate * the IRE_CACHE case. 47217c478bd9Sstevel@tonic-gate */ 47227c478bd9Sstevel@tonic-gate ire_t * 47237c478bd9Sstevel@tonic-gate ire_ihandle_lookup_offlink(ire_t *cire, ire_t *pire) 47247c478bd9Sstevel@tonic-gate { 47257c478bd9Sstevel@tonic-gate ire_t *ire; 47267c478bd9Sstevel@tonic-gate int match_flags; 47277c478bd9Sstevel@tonic-gate ipaddr_t gw_addr; 47287c478bd9Sstevel@tonic-gate ipif_t *gw_ipif; 4729f4b3ec61Sdh155122 ip_stack_t *ipst = cire->ire_ipst; 47307c478bd9Sstevel@tonic-gate 47317c478bd9Sstevel@tonic-gate ASSERT(cire != NULL && pire != NULL); 47327c478bd9Sstevel@tonic-gate 47337c478bd9Sstevel@tonic-gate /* 47347c478bd9Sstevel@tonic-gate * We don't need to specify the zoneid to ire_ftable_lookup() below 47357c478bd9Sstevel@tonic-gate * because the ihandle refers to an ipif which can be in only one zone. 47367c478bd9Sstevel@tonic-gate */ 47377c478bd9Sstevel@tonic-gate match_flags = MATCH_IRE_TYPE | MATCH_IRE_IHANDLE | MATCH_IRE_MASK; 47387c478bd9Sstevel@tonic-gate /* 47397c478bd9Sstevel@tonic-gate * ip_newroute calls ire_ftable_lookup with MATCH_IRE_ILL only 47407c478bd9Sstevel@tonic-gate * for on-link hosts. We should never be here for onlink. 47417c478bd9Sstevel@tonic-gate * Thus, use MATCH_IRE_ILL_GROUP. 47427c478bd9Sstevel@tonic-gate */ 47437c478bd9Sstevel@tonic-gate if (pire->ire_ipif != NULL) 47447c478bd9Sstevel@tonic-gate match_flags |= MATCH_IRE_ILL_GROUP; 47457c478bd9Sstevel@tonic-gate /* 47467c478bd9Sstevel@tonic-gate * We know that the mask of the interface ire equals cire->ire_cmask. 47477c478bd9Sstevel@tonic-gate * (When ip_newroute() created 'cire' for the gateway it set its 47487c478bd9Sstevel@tonic-gate * cmask from the interface ire's mask) 47497c478bd9Sstevel@tonic-gate */ 47507c478bd9Sstevel@tonic-gate ire = ire_ftable_lookup(cire->ire_addr, cire->ire_cmask, 0, 47517c478bd9Sstevel@tonic-gate IRE_INTERFACE, pire->ire_ipif, NULL, ALL_ZONES, cire->ire_ihandle, 4752f4b3ec61Sdh155122 NULL, match_flags, ipst); 47537c478bd9Sstevel@tonic-gate if (ire != NULL) 47547c478bd9Sstevel@tonic-gate return (ire); 47557c478bd9Sstevel@tonic-gate /* 47567c478bd9Sstevel@tonic-gate * If we didn't find an interface ire above, we can't declare failure. 47577c478bd9Sstevel@tonic-gate * For backwards compatibility, we need to support prefix routes 47587c478bd9Sstevel@tonic-gate * pointing to next hop gateways that are not on-link. 47597c478bd9Sstevel@tonic-gate * 47607c478bd9Sstevel@tonic-gate * Assume we are trying to ping some offlink destn, and we have the 47617c478bd9Sstevel@tonic-gate * routing table below. 47627c478bd9Sstevel@tonic-gate * 47637c478bd9Sstevel@tonic-gate * Eg. default - gw1 <--- pire (line 1) 47647c478bd9Sstevel@tonic-gate * gw1 - gw2 (line 2) 47657c478bd9Sstevel@tonic-gate * gw2 - hme0 (line 3) 47667c478bd9Sstevel@tonic-gate * 47677c478bd9Sstevel@tonic-gate * If we already have a cache ire for gw1 in 'cire', the 47687c478bd9Sstevel@tonic-gate * ire_ftable_lookup above would have failed, since there is no 47697c478bd9Sstevel@tonic-gate * interface ire to reach gw1. We will fallthru below. 47707c478bd9Sstevel@tonic-gate * 47717c478bd9Sstevel@tonic-gate * Here we duplicate the steps that ire_ftable_lookup() did in 47727c478bd9Sstevel@tonic-gate * getting 'cire' from 'pire', in the MATCH_IRE_RECURSIVE case. 47737c478bd9Sstevel@tonic-gate * The differences are the following 47747c478bd9Sstevel@tonic-gate * i. We want the interface ire only, so we call ire_ftable_lookup() 47757c478bd9Sstevel@tonic-gate * instead of ire_route_lookup() 47767c478bd9Sstevel@tonic-gate * ii. We look for only prefix routes in the 1st call below. 47777c478bd9Sstevel@tonic-gate * ii. We want to match on the ihandle in the 2nd call below. 47787c478bd9Sstevel@tonic-gate */ 47797c478bd9Sstevel@tonic-gate match_flags = MATCH_IRE_TYPE; 47807c478bd9Sstevel@tonic-gate if (pire->ire_ipif != NULL) 47817c478bd9Sstevel@tonic-gate match_flags |= MATCH_IRE_ILL_GROUP; 47827c478bd9Sstevel@tonic-gate ire = ire_ftable_lookup(pire->ire_gateway_addr, 0, 0, IRE_OFFSUBNET, 4783f4b3ec61Sdh155122 pire->ire_ipif, NULL, ALL_ZONES, 0, NULL, match_flags, ipst); 47847c478bd9Sstevel@tonic-gate if (ire == NULL) 47857c478bd9Sstevel@tonic-gate return (NULL); 47867c478bd9Sstevel@tonic-gate /* 47877c478bd9Sstevel@tonic-gate * At this point 'ire' corresponds to the entry shown in line 2. 47887c478bd9Sstevel@tonic-gate * gw_addr is 'gw2' in the example above. 47897c478bd9Sstevel@tonic-gate */ 47907c478bd9Sstevel@tonic-gate gw_addr = ire->ire_gateway_addr; 47917c478bd9Sstevel@tonic-gate gw_ipif = ire->ire_ipif; 47927c478bd9Sstevel@tonic-gate ire_refrele(ire); 47937c478bd9Sstevel@tonic-gate 47947c478bd9Sstevel@tonic-gate match_flags |= MATCH_IRE_IHANDLE; 47957c478bd9Sstevel@tonic-gate ire = ire_ftable_lookup(gw_addr, 0, 0, IRE_INTERFACE, 4796f4b3ec61Sdh155122 gw_ipif, NULL, ALL_ZONES, cire->ire_ihandle, NULL, match_flags, 4797f4b3ec61Sdh155122 ipst); 47987c478bd9Sstevel@tonic-gate return (ire); 47997c478bd9Sstevel@tonic-gate } 48007c478bd9Sstevel@tonic-gate 48017c478bd9Sstevel@tonic-gate /* 48027c478bd9Sstevel@tonic-gate * ire_mrtun_lookup() is called by ip_rput() when packet is to be 48037c478bd9Sstevel@tonic-gate * tunneled through reverse tunnel. This is only supported for 48047c478bd9Sstevel@tonic-gate * IPv4 packets 48057c478bd9Sstevel@tonic-gate */ 48067c478bd9Sstevel@tonic-gate 48077c478bd9Sstevel@tonic-gate ire_t * 48087c478bd9Sstevel@tonic-gate ire_mrtun_lookup(ipaddr_t srcaddr, ill_t *ill) 48097c478bd9Sstevel@tonic-gate { 48107c478bd9Sstevel@tonic-gate irb_t *irb_ptr; 48117c478bd9Sstevel@tonic-gate ire_t *ire; 4812f4b3ec61Sdh155122 ip_stack_t *ipst = ill->ill_ipst; 48137c478bd9Sstevel@tonic-gate 48147c478bd9Sstevel@tonic-gate ASSERT(ill != NULL); 48157c478bd9Sstevel@tonic-gate ASSERT(!(ill->ill_isv6)); 48167c478bd9Sstevel@tonic-gate 4817f4b3ec61Sdh155122 if (ipst->ips_ip_mrtun_table == NULL) 48187c478bd9Sstevel@tonic-gate return (NULL); 4819f4b3ec61Sdh155122 irb_ptr = &ipst->ips_ip_mrtun_table[IRE_ADDR_HASH(srcaddr, 4820f4b3ec61Sdh155122 IP_MRTUN_TABLE_SIZE)]; 48217c478bd9Sstevel@tonic-gate rw_enter(&irb_ptr->irb_lock, RW_READER); 48227c478bd9Sstevel@tonic-gate for (ire = irb_ptr->irb_ire; ire != NULL; ire = ire->ire_next) { 48237c478bd9Sstevel@tonic-gate if (ire->ire_marks & IRE_MARK_CONDEMNED) 48247c478bd9Sstevel@tonic-gate continue; 48257c478bd9Sstevel@tonic-gate if ((ire->ire_in_src_addr == srcaddr) && 48267c478bd9Sstevel@tonic-gate ire->ire_in_ill == ill) { 48277c478bd9Sstevel@tonic-gate IRE_REFHOLD(ire); 48287c478bd9Sstevel@tonic-gate rw_exit(&irb_ptr->irb_lock); 48297c478bd9Sstevel@tonic-gate return (ire); 48307c478bd9Sstevel@tonic-gate } 48317c478bd9Sstevel@tonic-gate } 48327c478bd9Sstevel@tonic-gate rw_exit(&irb_ptr->irb_lock); 48337c478bd9Sstevel@tonic-gate return (NULL); 48347c478bd9Sstevel@tonic-gate } 48357c478bd9Sstevel@tonic-gate 48367c478bd9Sstevel@tonic-gate /* 48377c478bd9Sstevel@tonic-gate * Return the IRE_LOOPBACK, IRE_IF_RESOLVER or IRE_IF_NORESOLVER 48387c478bd9Sstevel@tonic-gate * ire associated with the specified ipif. 48397c478bd9Sstevel@tonic-gate * 48407c478bd9Sstevel@tonic-gate * This might occasionally be called when IPIF_UP is not set since 48417c478bd9Sstevel@tonic-gate * the IP_MULTICAST_IF as well as creating interface routes 48427c478bd9Sstevel@tonic-gate * allows specifying a down ipif (ipif_lookup* match ipifs that are down). 48437c478bd9Sstevel@tonic-gate * 48447c478bd9Sstevel@tonic-gate * Note that if IPIF_NOLOCAL, IPIF_NOXMIT, or IPIF_DEPRECATED is set on 48457c478bd9Sstevel@tonic-gate * the ipif, this routine might return NULL. 48467c478bd9Sstevel@tonic-gate */ 48477c478bd9Sstevel@tonic-gate ire_t * 484845916cd2Sjpk ipif_to_ire(const ipif_t *ipif) 48497c478bd9Sstevel@tonic-gate { 48507c478bd9Sstevel@tonic-gate ire_t *ire; 4851f4b3ec61Sdh155122 ip_stack_t *ipst = ipif->ipif_ill->ill_ipst; 48527c478bd9Sstevel@tonic-gate 48537c478bd9Sstevel@tonic-gate ASSERT(!ipif->ipif_isv6); 48547c478bd9Sstevel@tonic-gate if (ipif->ipif_ire_type == IRE_LOOPBACK) { 48557c478bd9Sstevel@tonic-gate ire = ire_ctable_lookup(ipif->ipif_lcl_addr, 0, IRE_LOOPBACK, 4856f4b3ec61Sdh155122 ipif, ALL_ZONES, NULL, (MATCH_IRE_TYPE | MATCH_IRE_IPIF), 4857f4b3ec61Sdh155122 ipst); 48587c478bd9Sstevel@tonic-gate } else if (ipif->ipif_flags & IPIF_POINTOPOINT) { 48597c478bd9Sstevel@tonic-gate /* In this case we need to lookup destination address. */ 48607c478bd9Sstevel@tonic-gate ire = ire_ftable_lookup(ipif->ipif_pp_dst_addr, IP_HOST_MASK, 0, 486145916cd2Sjpk IRE_INTERFACE, ipif, NULL, ALL_ZONES, 0, NULL, 4862f4b3ec61Sdh155122 (MATCH_IRE_TYPE | MATCH_IRE_IPIF | MATCH_IRE_MASK), ipst); 48637c478bd9Sstevel@tonic-gate } else { 48647c478bd9Sstevel@tonic-gate ire = ire_ftable_lookup(ipif->ipif_subnet, 48657c478bd9Sstevel@tonic-gate ipif->ipif_net_mask, 0, IRE_INTERFACE, ipif, NULL, 486645916cd2Sjpk ALL_ZONES, 0, NULL, (MATCH_IRE_TYPE | MATCH_IRE_IPIF | 4867f4b3ec61Sdh155122 MATCH_IRE_MASK), ipst); 48687c478bd9Sstevel@tonic-gate } 48697c478bd9Sstevel@tonic-gate return (ire); 48707c478bd9Sstevel@tonic-gate } 48717c478bd9Sstevel@tonic-gate 48727c478bd9Sstevel@tonic-gate /* 48737c478bd9Sstevel@tonic-gate * ire_walk function. 48747c478bd9Sstevel@tonic-gate * Count the number of IRE_CACHE entries in different categories. 48757c478bd9Sstevel@tonic-gate */ 48767c478bd9Sstevel@tonic-gate void 48777c478bd9Sstevel@tonic-gate ire_cache_count(ire_t *ire, char *arg) 48787c478bd9Sstevel@tonic-gate { 48797c478bd9Sstevel@tonic-gate ire_cache_count_t *icc = (ire_cache_count_t *)arg; 48807c478bd9Sstevel@tonic-gate 48817c478bd9Sstevel@tonic-gate if (ire->ire_type != IRE_CACHE) 48827c478bd9Sstevel@tonic-gate return; 48837c478bd9Sstevel@tonic-gate 48847c478bd9Sstevel@tonic-gate icc->icc_total++; 48857c478bd9Sstevel@tonic-gate 48867c478bd9Sstevel@tonic-gate if (ire->ire_ipversion == IPV6_VERSION) { 48877c478bd9Sstevel@tonic-gate mutex_enter(&ire->ire_lock); 48887c478bd9Sstevel@tonic-gate if (IN6_IS_ADDR_UNSPECIFIED(&ire->ire_gateway_addr_v6)) { 48897c478bd9Sstevel@tonic-gate mutex_exit(&ire->ire_lock); 48907c478bd9Sstevel@tonic-gate icc->icc_onlink++; 48917c478bd9Sstevel@tonic-gate return; 48927c478bd9Sstevel@tonic-gate } 48937c478bd9Sstevel@tonic-gate mutex_exit(&ire->ire_lock); 48947c478bd9Sstevel@tonic-gate } else { 48957c478bd9Sstevel@tonic-gate if (ire->ire_gateway_addr == 0) { 48967c478bd9Sstevel@tonic-gate icc->icc_onlink++; 48977c478bd9Sstevel@tonic-gate return; 48987c478bd9Sstevel@tonic-gate } 48997c478bd9Sstevel@tonic-gate } 49007c478bd9Sstevel@tonic-gate 49017c478bd9Sstevel@tonic-gate ASSERT(ire->ire_ipif != NULL); 49027c478bd9Sstevel@tonic-gate if (ire->ire_max_frag < ire->ire_ipif->ipif_mtu) 49037c478bd9Sstevel@tonic-gate icc->icc_pmtu++; 49047c478bd9Sstevel@tonic-gate else if (ire->ire_tire_mark != ire->ire_ob_pkt_count + 49057c478bd9Sstevel@tonic-gate ire->ire_ib_pkt_count) 49067c478bd9Sstevel@tonic-gate icc->icc_offlink++; 49077c478bd9Sstevel@tonic-gate else 49087c478bd9Sstevel@tonic-gate icc->icc_unused++; 49097c478bd9Sstevel@tonic-gate } 49107c478bd9Sstevel@tonic-gate 49117c478bd9Sstevel@tonic-gate /* 49127c478bd9Sstevel@tonic-gate * ire_walk function called by ip_trash_ire_reclaim(). 49137c478bd9Sstevel@tonic-gate * Free a fraction of the IRE_CACHE cache entries. The fractions are 49147c478bd9Sstevel@tonic-gate * different for different categories of IRE_CACHE entries. 49157c478bd9Sstevel@tonic-gate * A fraction of zero means to not free any in that category. 49167c478bd9Sstevel@tonic-gate * Use the hash bucket id plus lbolt as a random number. Thus if the fraction 49177c478bd9Sstevel@tonic-gate * is N then every Nth hash bucket chain will be freed. 49187c478bd9Sstevel@tonic-gate */ 49197c478bd9Sstevel@tonic-gate void 49207c478bd9Sstevel@tonic-gate ire_cache_reclaim(ire_t *ire, char *arg) 49217c478bd9Sstevel@tonic-gate { 49227c478bd9Sstevel@tonic-gate ire_cache_reclaim_t *icr = (ire_cache_reclaim_t *)arg; 49237c478bd9Sstevel@tonic-gate uint_t rand; 4924f4b3ec61Sdh155122 ip_stack_t *ipst = icr->icr_ipst; 49257c478bd9Sstevel@tonic-gate 49267c478bd9Sstevel@tonic-gate if (ire->ire_type != IRE_CACHE) 49277c478bd9Sstevel@tonic-gate return; 49287c478bd9Sstevel@tonic-gate 49297c478bd9Sstevel@tonic-gate if (ire->ire_ipversion == IPV6_VERSION) { 49307c478bd9Sstevel@tonic-gate rand = (uint_t)lbolt + 4931f4b3ec61Sdh155122 IRE_ADDR_HASH_V6(ire->ire_addr_v6, 4932f4b3ec61Sdh155122 ipst->ips_ip6_cache_table_size); 49337c478bd9Sstevel@tonic-gate mutex_enter(&ire->ire_lock); 49347c478bd9Sstevel@tonic-gate if (IN6_IS_ADDR_UNSPECIFIED(&ire->ire_gateway_addr_v6)) { 49357c478bd9Sstevel@tonic-gate mutex_exit(&ire->ire_lock); 49367c478bd9Sstevel@tonic-gate if (icr->icr_onlink != 0 && 49377c478bd9Sstevel@tonic-gate (rand/icr->icr_onlink)*icr->icr_onlink == rand) { 49387c478bd9Sstevel@tonic-gate ire_delete(ire); 49397c478bd9Sstevel@tonic-gate return; 49407c478bd9Sstevel@tonic-gate } 49417c478bd9Sstevel@tonic-gate goto done; 49427c478bd9Sstevel@tonic-gate } 49437c478bd9Sstevel@tonic-gate mutex_exit(&ire->ire_lock); 49447c478bd9Sstevel@tonic-gate } else { 49457c478bd9Sstevel@tonic-gate rand = (uint_t)lbolt + 4946f4b3ec61Sdh155122 IRE_ADDR_HASH(ire->ire_addr, ipst->ips_ip_cache_table_size); 49477c478bd9Sstevel@tonic-gate if (ire->ire_gateway_addr == 0) { 49487c478bd9Sstevel@tonic-gate if (icr->icr_onlink != 0 && 49497c478bd9Sstevel@tonic-gate (rand/icr->icr_onlink)*icr->icr_onlink == rand) { 49507c478bd9Sstevel@tonic-gate ire_delete(ire); 49517c478bd9Sstevel@tonic-gate return; 49527c478bd9Sstevel@tonic-gate } 49537c478bd9Sstevel@tonic-gate goto done; 49547c478bd9Sstevel@tonic-gate } 49557c478bd9Sstevel@tonic-gate } 49567c478bd9Sstevel@tonic-gate /* Not onlink IRE */ 49577c478bd9Sstevel@tonic-gate ASSERT(ire->ire_ipif != NULL); 49587c478bd9Sstevel@tonic-gate if (ire->ire_max_frag < ire->ire_ipif->ipif_mtu) { 49597c478bd9Sstevel@tonic-gate /* Use ptmu fraction */ 49607c478bd9Sstevel@tonic-gate if (icr->icr_pmtu != 0 && 49617c478bd9Sstevel@tonic-gate (rand/icr->icr_pmtu)*icr->icr_pmtu == rand) { 49627c478bd9Sstevel@tonic-gate ire_delete(ire); 49637c478bd9Sstevel@tonic-gate return; 49647c478bd9Sstevel@tonic-gate } 49657c478bd9Sstevel@tonic-gate } else if (ire->ire_tire_mark != ire->ire_ob_pkt_count + 49667c478bd9Sstevel@tonic-gate ire->ire_ib_pkt_count) { 49677c478bd9Sstevel@tonic-gate /* Use offlink fraction */ 49687c478bd9Sstevel@tonic-gate if (icr->icr_offlink != 0 && 49697c478bd9Sstevel@tonic-gate (rand/icr->icr_offlink)*icr->icr_offlink == rand) { 49707c478bd9Sstevel@tonic-gate ire_delete(ire); 49717c478bd9Sstevel@tonic-gate return; 49727c478bd9Sstevel@tonic-gate } 49737c478bd9Sstevel@tonic-gate } else { 49747c478bd9Sstevel@tonic-gate /* Use unused fraction */ 49757c478bd9Sstevel@tonic-gate if (icr->icr_unused != 0 && 49767c478bd9Sstevel@tonic-gate (rand/icr->icr_unused)*icr->icr_unused == rand) { 49777c478bd9Sstevel@tonic-gate ire_delete(ire); 49787c478bd9Sstevel@tonic-gate return; 49797c478bd9Sstevel@tonic-gate } 49807c478bd9Sstevel@tonic-gate } 49817c478bd9Sstevel@tonic-gate done: 49827c478bd9Sstevel@tonic-gate /* 49837c478bd9Sstevel@tonic-gate * Update tire_mark so that those that haven't been used since this 49847c478bd9Sstevel@tonic-gate * reclaim will be considered unused next time we reclaim. 49857c478bd9Sstevel@tonic-gate */ 49867c478bd9Sstevel@tonic-gate ire->ire_tire_mark = ire->ire_ob_pkt_count + ire->ire_ib_pkt_count; 49877c478bd9Sstevel@tonic-gate } 49887c478bd9Sstevel@tonic-gate 49897c478bd9Sstevel@tonic-gate static void 49907c478bd9Sstevel@tonic-gate power2_roundup(uint32_t *value) 49917c478bd9Sstevel@tonic-gate { 49927c478bd9Sstevel@tonic-gate int i; 49937c478bd9Sstevel@tonic-gate 49947c478bd9Sstevel@tonic-gate for (i = 1; i < 31; i++) { 49957c478bd9Sstevel@tonic-gate if (*value <= (1 << i)) 49967c478bd9Sstevel@tonic-gate break; 49977c478bd9Sstevel@tonic-gate } 49987c478bd9Sstevel@tonic-gate *value = (1 << i); 49997c478bd9Sstevel@tonic-gate } 50007c478bd9Sstevel@tonic-gate 5001f4b3ec61Sdh155122 /* Global init for all zones */ 50027c478bd9Sstevel@tonic-gate void 5003f4b3ec61Sdh155122 ip_ire_g_init() 50047c478bd9Sstevel@tonic-gate { 50057c478bd9Sstevel@tonic-gate /* 50067c478bd9Sstevel@tonic-gate * Create ire caches, ire_reclaim() 50077c478bd9Sstevel@tonic-gate * will give IRE_CACHE back to system when needed. 50087c478bd9Sstevel@tonic-gate * This needs to be done here before anything else, since 50097c478bd9Sstevel@tonic-gate * ire_add() expects the cache to be created. 50107c478bd9Sstevel@tonic-gate */ 50117c478bd9Sstevel@tonic-gate ire_cache = kmem_cache_create("ire_cache", 50127c478bd9Sstevel@tonic-gate sizeof (ire_t), 0, ip_ire_constructor, 50137c478bd9Sstevel@tonic-gate ip_ire_destructor, ip_trash_ire_reclaim, NULL, NULL, 0); 50147c478bd9Sstevel@tonic-gate 5015f4b3ec61Sdh155122 rt_entry_cache = kmem_cache_create("rt_entry", 5016f4b3ec61Sdh155122 sizeof (struct rt_entry), 0, NULL, NULL, NULL, NULL, NULL, 0); 5017f4b3ec61Sdh155122 5018f4b3ec61Sdh155122 /* 5019f4b3ec61Sdh155122 * Have radix code setup kmem caches etc. 5020f4b3ec61Sdh155122 */ 5021f4b3ec61Sdh155122 rn_init(); 5022f4b3ec61Sdh155122 } 5023f4b3ec61Sdh155122 5024f4b3ec61Sdh155122 void 5025f4b3ec61Sdh155122 ip_ire_init(ip_stack_t *ipst) 5026f4b3ec61Sdh155122 { 5027f4b3ec61Sdh155122 int i; 5028f4b3ec61Sdh155122 uint32_t mem_cnt; 5029f4b3ec61Sdh155122 uint32_t cpu_cnt; 5030f4b3ec61Sdh155122 uint32_t min_cnt; 5031f4b3ec61Sdh155122 pgcnt_t mem_avail; 5032f4b3ec61Sdh155122 5033f4b3ec61Sdh155122 /* 5034f4b3ec61Sdh155122 * ip_ire_max_bucket_cnt is sized below based on the memory 5035f4b3ec61Sdh155122 * size and the cpu speed of the machine. This is upper 5036f4b3ec61Sdh155122 * bounded by the compile time value of ip_ire_max_bucket_cnt 5037f4b3ec61Sdh155122 * and is lower bounded by the compile time value of 5038f4b3ec61Sdh155122 * ip_ire_min_bucket_cnt. Similar logic applies to 5039f4b3ec61Sdh155122 * ip6_ire_max_bucket_cnt. 5040f4b3ec61Sdh155122 * 5041f4b3ec61Sdh155122 * We calculate this for each IP Instances in order to use 5042f4b3ec61Sdh155122 * the kmem_avail and ip_ire_{min,max}_bucket_cnt that are 5043f4b3ec61Sdh155122 * in effect when the zone is booted. 5044f4b3ec61Sdh155122 */ 5045f4b3ec61Sdh155122 mem_avail = kmem_avail(); 5046f4b3ec61Sdh155122 mem_cnt = (mem_avail >> ip_ire_mem_ratio) / 5047f4b3ec61Sdh155122 ip_cache_table_size / sizeof (ire_t); 5048f4b3ec61Sdh155122 cpu_cnt = CPU->cpu_type_info.pi_clock >> ip_ire_cpu_ratio; 5049f4b3ec61Sdh155122 5050f4b3ec61Sdh155122 min_cnt = MIN(cpu_cnt, mem_cnt); 5051f4b3ec61Sdh155122 if (min_cnt < ip_ire_min_bucket_cnt) 5052f4b3ec61Sdh155122 min_cnt = ip_ire_min_bucket_cnt; 5053f4b3ec61Sdh155122 if (ip_ire_max_bucket_cnt > min_cnt) { 5054f4b3ec61Sdh155122 ip_ire_max_bucket_cnt = min_cnt; 5055f4b3ec61Sdh155122 } 5056f4b3ec61Sdh155122 5057f4b3ec61Sdh155122 mem_cnt = (mem_avail >> ip_ire_mem_ratio) / 5058f4b3ec61Sdh155122 ip6_cache_table_size / sizeof (ire_t); 5059f4b3ec61Sdh155122 min_cnt = MIN(cpu_cnt, mem_cnt); 5060f4b3ec61Sdh155122 if (min_cnt < ip6_ire_min_bucket_cnt) 5061f4b3ec61Sdh155122 min_cnt = ip6_ire_min_bucket_cnt; 5062f4b3ec61Sdh155122 if (ip6_ire_max_bucket_cnt > min_cnt) { 5063f4b3ec61Sdh155122 ip6_ire_max_bucket_cnt = min_cnt; 5064f4b3ec61Sdh155122 } 5065f4b3ec61Sdh155122 5066f4b3ec61Sdh155122 mutex_init(&ipst->ips_ire_ft_init_lock, NULL, MUTEX_DEFAULT, 0); 5067f4b3ec61Sdh155122 mutex_init(&ipst->ips_ire_handle_lock, NULL, MUTEX_DEFAULT, NULL); 5068f4b3ec61Sdh155122 mutex_init(&ipst->ips_ire_mrtun_lock, NULL, MUTEX_DEFAULT, NULL); 5069f4b3ec61Sdh155122 mutex_init(&ipst->ips_ire_srcif_table_lock, NULL, MUTEX_DEFAULT, NULL); 5070f4b3ec61Sdh155122 5071f4b3ec61Sdh155122 (void) rn_inithead((void **)&ipst->ips_ip_ftable, 32); 5072f4b3ec61Sdh155122 5073f4b3ec61Sdh155122 5074f4b3ec61Sdh155122 /* Calculate the IPv4 cache table size. */ 5075f4b3ec61Sdh155122 ipst->ips_ip_cache_table_size = MAX(ip_cache_table_size, 5076f4b3ec61Sdh155122 ((mem_avail >> ip_ire_mem_ratio) / sizeof (ire_t) / 5077f4b3ec61Sdh155122 ip_ire_max_bucket_cnt)); 5078f4b3ec61Sdh155122 if (ipst->ips_ip_cache_table_size > ip_max_cache_table_size) 5079f4b3ec61Sdh155122 ipst->ips_ip_cache_table_size = ip_max_cache_table_size; 5080f4b3ec61Sdh155122 /* 5081f4b3ec61Sdh155122 * Make sure that the table size is always a power of 2. The 5082f4b3ec61Sdh155122 * hash macro IRE_ADDR_HASH() depends on that. 5083f4b3ec61Sdh155122 */ 5084f4b3ec61Sdh155122 power2_roundup(&ipst->ips_ip_cache_table_size); 5085f4b3ec61Sdh155122 5086f4b3ec61Sdh155122 ipst->ips_ip_cache_table = kmem_zalloc(ipst->ips_ip_cache_table_size * 5087f4b3ec61Sdh155122 sizeof (irb_t), KM_SLEEP); 5088f4b3ec61Sdh155122 5089f4b3ec61Sdh155122 for (i = 0; i < ipst->ips_ip_cache_table_size; i++) { 5090f4b3ec61Sdh155122 rw_init(&ipst->ips_ip_cache_table[i].irb_lock, NULL, 5091f4b3ec61Sdh155122 RW_DEFAULT, NULL); 5092f4b3ec61Sdh155122 } 5093f4b3ec61Sdh155122 5094f4b3ec61Sdh155122 /* Calculate the IPv6 cache table size. */ 5095f4b3ec61Sdh155122 ipst->ips_ip6_cache_table_size = MAX(ip6_cache_table_size, 5096f4b3ec61Sdh155122 ((mem_avail >> ip_ire_mem_ratio) / sizeof (ire_t) / 5097f4b3ec61Sdh155122 ip6_ire_max_bucket_cnt)); 5098f4b3ec61Sdh155122 if (ipst->ips_ip6_cache_table_size > ip6_max_cache_table_size) 5099f4b3ec61Sdh155122 ipst->ips_ip6_cache_table_size = ip6_max_cache_table_size; 5100f4b3ec61Sdh155122 /* 5101f4b3ec61Sdh155122 * Make sure that the table size is always a power of 2. The 5102f4b3ec61Sdh155122 * hash macro IRE_ADDR_HASH_V6() depends on that. 5103f4b3ec61Sdh155122 */ 5104f4b3ec61Sdh155122 power2_roundup(&ipst->ips_ip6_cache_table_size); 5105f4b3ec61Sdh155122 5106f4b3ec61Sdh155122 ipst->ips_ip_cache_table_v6 = kmem_zalloc( 5107f4b3ec61Sdh155122 ipst->ips_ip6_cache_table_size * sizeof (irb_t), KM_SLEEP); 5108f4b3ec61Sdh155122 5109f4b3ec61Sdh155122 for (i = 0; i < ipst->ips_ip6_cache_table_size; i++) { 5110f4b3ec61Sdh155122 rw_init(&ipst->ips_ip_cache_table_v6[i].irb_lock, NULL, 5111f4b3ec61Sdh155122 RW_DEFAULT, NULL); 5112f4b3ec61Sdh155122 } 5113f4b3ec61Sdh155122 51147c478bd9Sstevel@tonic-gate /* 51157c478bd9Sstevel@tonic-gate * Initialize ip_mrtun_table to NULL now, it will be 51167c478bd9Sstevel@tonic-gate * populated by ip_rt_add if reverse tunnel is created 51177c478bd9Sstevel@tonic-gate */ 5118f4b3ec61Sdh155122 ipst->ips_ip_mrtun_table = NULL; 51197c478bd9Sstevel@tonic-gate 51207c478bd9Sstevel@tonic-gate /* 51217c478bd9Sstevel@tonic-gate * Make sure that the forwarding table size is a power of 2. 51227c478bd9Sstevel@tonic-gate * The IRE*_ADDR_HASH() macroes depend on that. 51237c478bd9Sstevel@tonic-gate */ 5124f4b3ec61Sdh155122 ipst->ips_ip6_ftable_hash_size = ip6_ftable_hash_size; 5125f4b3ec61Sdh155122 power2_roundup(&ipst->ips_ip6_ftable_hash_size); 5126f4b3ec61Sdh155122 5127f4b3ec61Sdh155122 ipst->ips_ire_handle = 1; 51287c478bd9Sstevel@tonic-gate } 51297c478bd9Sstevel@tonic-gate 51307c478bd9Sstevel@tonic-gate void 5131f4b3ec61Sdh155122 ip_ire_g_fini(void) 5132f4b3ec61Sdh155122 { 5133f4b3ec61Sdh155122 kmem_cache_destroy(ire_cache); 5134f4b3ec61Sdh155122 kmem_cache_destroy(rt_entry_cache); 5135f4b3ec61Sdh155122 5136f4b3ec61Sdh155122 rn_fini(); 5137f4b3ec61Sdh155122 } 5138f4b3ec61Sdh155122 5139f4b3ec61Sdh155122 void 5140f4b3ec61Sdh155122 ip_ire_fini(ip_stack_t *ipst) 51417c478bd9Sstevel@tonic-gate { 51427c478bd9Sstevel@tonic-gate int i; 51437c478bd9Sstevel@tonic-gate 5144f4b3ec61Sdh155122 /* 5145f4b3ec61Sdh155122 * Delete all IREs - assumes that the ill/ipifs have 5146f4b3ec61Sdh155122 * been removed so what remains are just the ftable and IRE_CACHE. 5147f4b3ec61Sdh155122 */ 5148f4b3ec61Sdh155122 ire_walk_ill_mrtun(0, 0, ire_delete, NULL, NULL, ipst); 5149f4b3ec61Sdh155122 ire_walk(ire_delete, NULL, ipst); 5150c793af95Ssangeeta 5151f4b3ec61Sdh155122 rn_freehead(ipst->ips_ip_ftable); 5152f4b3ec61Sdh155122 ipst->ips_ip_ftable = NULL; 51537c478bd9Sstevel@tonic-gate 5154f4b3ec61Sdh155122 mutex_destroy(&ipst->ips_ire_ft_init_lock); 5155f4b3ec61Sdh155122 mutex_destroy(&ipst->ips_ire_handle_lock); 5156f4b3ec61Sdh155122 mutex_destroy(&ipst->ips_ire_mrtun_lock); 5157f4b3ec61Sdh155122 mutex_destroy(&ipst->ips_ire_srcif_table_lock); 5158f4b3ec61Sdh155122 5159f4b3ec61Sdh155122 for (i = 0; i < ipst->ips_ip_cache_table_size; i++) { 5160f4b3ec61Sdh155122 ASSERT(ipst->ips_ip_cache_table[i].irb_ire == NULL); 5161f4b3ec61Sdh155122 rw_destroy(&ipst->ips_ip_cache_table[i].irb_lock); 51627c478bd9Sstevel@tonic-gate } 5163f4b3ec61Sdh155122 kmem_free(ipst->ips_ip_cache_table, 5164f4b3ec61Sdh155122 ipst->ips_ip_cache_table_size * sizeof (irb_t)); 5165f4b3ec61Sdh155122 ipst->ips_ip_cache_table = NULL; 51667c478bd9Sstevel@tonic-gate 5167f4b3ec61Sdh155122 for (i = 0; i < ipst->ips_ip6_cache_table_size; i++) { 5168f4b3ec61Sdh155122 ASSERT(ipst->ips_ip_cache_table_v6[i].irb_ire == NULL); 5169f4b3ec61Sdh155122 rw_destroy(&ipst->ips_ip_cache_table_v6[i].irb_lock); 51707c478bd9Sstevel@tonic-gate } 5171f4b3ec61Sdh155122 kmem_free(ipst->ips_ip_cache_table_v6, 5172f4b3ec61Sdh155122 ipst->ips_ip6_cache_table_size * sizeof (irb_t)); 5173f4b3ec61Sdh155122 ipst->ips_ip_cache_table_v6 = NULL; 51747c478bd9Sstevel@tonic-gate 5175f4b3ec61Sdh155122 if (ipst->ips_ip_mrtun_table != NULL) { 51767c478bd9Sstevel@tonic-gate for (i = 0; i < IP_MRTUN_TABLE_SIZE; i++) { 5177f4b3ec61Sdh155122 ASSERT(ipst->ips_ip_mrtun_table[i].irb_ire == NULL); 5178f4b3ec61Sdh155122 rw_destroy(&ipst->ips_ip_mrtun_table[i].irb_lock); 51797c478bd9Sstevel@tonic-gate } 5180f4b3ec61Sdh155122 kmem_free(ipst->ips_ip_mrtun_table, 5181f4b3ec61Sdh155122 IP_MRTUN_TABLE_SIZE * sizeof (irb_t)); 5182f4b3ec61Sdh155122 ipst->ips_ip_mrtun_table = NULL; 51837c478bd9Sstevel@tonic-gate } 5184f4b3ec61Sdh155122 5185f4b3ec61Sdh155122 for (i = 0; i < IP6_MASK_TABLE_SIZE; i++) { 5186f4b3ec61Sdh155122 irb_t *ptr; 5187f4b3ec61Sdh155122 int j; 5188f4b3ec61Sdh155122 5189f4b3ec61Sdh155122 if ((ptr = ipst->ips_ip_forwarding_table_v6[i]) == NULL) 5190f4b3ec61Sdh155122 continue; 5191f4b3ec61Sdh155122 5192f4b3ec61Sdh155122 for (j = 0; j < ipst->ips_ip6_ftable_hash_size; j++) { 5193f4b3ec61Sdh155122 ASSERT(ptr[j].irb_ire == NULL); 5194f4b3ec61Sdh155122 rw_destroy(&ptr[j].irb_lock); 5195f4b3ec61Sdh155122 } 5196f4b3ec61Sdh155122 mi_free(ptr); 5197f4b3ec61Sdh155122 ipst->ips_ip_forwarding_table_v6[i] = NULL; 5198f4b3ec61Sdh155122 } 51997c478bd9Sstevel@tonic-gate } 52007c478bd9Sstevel@tonic-gate 52017c478bd9Sstevel@tonic-gate int 52027c478bd9Sstevel@tonic-gate ire_add_mrtun(ire_t **ire_p, queue_t *q, mblk_t *mp, ipsq_func_t func) 52037c478bd9Sstevel@tonic-gate { 52047c478bd9Sstevel@tonic-gate ire_t *ire1; 52057c478bd9Sstevel@tonic-gate irb_t *irb_ptr; 52067c478bd9Sstevel@tonic-gate ire_t **irep; 5207f4b3ec61Sdh155122 ire_t *ire = *ire_p; 52087c478bd9Sstevel@tonic-gate int i; 52097c478bd9Sstevel@tonic-gate uint_t max_frag; 52107c478bd9Sstevel@tonic-gate ill_t *stq_ill; 52117c478bd9Sstevel@tonic-gate int error; 5212f4b3ec61Sdh155122 ip_stack_t *ipst = ire->ire_ipst; 52137c478bd9Sstevel@tonic-gate 52147c478bd9Sstevel@tonic-gate ASSERT(ire->ire_ipversion == IPV4_VERSION); 52157c478bd9Sstevel@tonic-gate /* Is ip_mrtun_table empty ? */ 52167c478bd9Sstevel@tonic-gate 5217f4b3ec61Sdh155122 if (ipst->ips_ip_mrtun_table == NULL) { 52187c478bd9Sstevel@tonic-gate /* create the mrtun table */ 5219f4b3ec61Sdh155122 mutex_enter(&ipst->ips_ire_mrtun_lock); 5220f4b3ec61Sdh155122 if (ipst->ips_ip_mrtun_table == NULL) { 5221f4b3ec61Sdh155122 ipst->ips_ip_mrtun_table = kmem_zalloc( 5222f4b3ec61Sdh155122 IP_MRTUN_TABLE_SIZE * sizeof (irb_t), KM_NOSLEEP); 52237c478bd9Sstevel@tonic-gate 5224f4b3ec61Sdh155122 if (ipst->ips_ip_mrtun_table == NULL) { 52257c478bd9Sstevel@tonic-gate ip2dbg(("ire_add_mrtun: allocation failure\n")); 5226f4b3ec61Sdh155122 mutex_exit(&ipst->ips_ire_mrtun_lock); 52277c478bd9Sstevel@tonic-gate ire_refrele(ire); 52287c478bd9Sstevel@tonic-gate *ire_p = NULL; 52297c478bd9Sstevel@tonic-gate return (ENOMEM); 52307c478bd9Sstevel@tonic-gate } 52317c478bd9Sstevel@tonic-gate 52327c478bd9Sstevel@tonic-gate for (i = 0; i < IP_MRTUN_TABLE_SIZE; i++) { 5233*54da8755Ssowmini rw_init(&ipst->ips_ip_mrtun_table[i].irb_lock, 5234*54da8755Ssowmini NULL, RW_DEFAULT, NULL); 52357c478bd9Sstevel@tonic-gate } 52367c478bd9Sstevel@tonic-gate ip2dbg(("ire_add_mrtun: mrtun table is created\n")); 52377c478bd9Sstevel@tonic-gate } 52387c478bd9Sstevel@tonic-gate /* some other thread got it and created the table */ 5239f4b3ec61Sdh155122 mutex_exit(&ipst->ips_ire_mrtun_lock); 52407c478bd9Sstevel@tonic-gate } 52417c478bd9Sstevel@tonic-gate 52427c478bd9Sstevel@tonic-gate /* 52437c478bd9Sstevel@tonic-gate * Check for duplicate in the bucket and insert in the table 52447c478bd9Sstevel@tonic-gate */ 5245f4b3ec61Sdh155122 irb_ptr = &(ipst->ips_ip_mrtun_table[IRE_ADDR_HASH(ire->ire_in_src_addr, 52467c478bd9Sstevel@tonic-gate IP_MRTUN_TABLE_SIZE)]); 52477c478bd9Sstevel@tonic-gate 52487c478bd9Sstevel@tonic-gate /* 52497c478bd9Sstevel@tonic-gate * Start the atomic add of the ire. Grab the ill locks, 52507c478bd9Sstevel@tonic-gate * ill_g_usesrc_lock and the bucket lock. 52517c478bd9Sstevel@tonic-gate * 52527c478bd9Sstevel@tonic-gate * If ipif or ill is changing ire_atomic_start() may queue the 52537c478bd9Sstevel@tonic-gate * request and return EINPROGRESS. 52547c478bd9Sstevel@tonic-gate */ 52557c478bd9Sstevel@tonic-gate error = ire_atomic_start(irb_ptr, ire, q, mp, func); 52567c478bd9Sstevel@tonic-gate if (error != 0) { 52577c478bd9Sstevel@tonic-gate /* 52587c478bd9Sstevel@tonic-gate * We don't know whether it is a valid ipif or not. 52597c478bd9Sstevel@tonic-gate * So, set it to NULL. This assumes that the ire has not added 52607c478bd9Sstevel@tonic-gate * a reference to the ipif. 52617c478bd9Sstevel@tonic-gate */ 52627c478bd9Sstevel@tonic-gate ire->ire_ipif = NULL; 52637c478bd9Sstevel@tonic-gate ire_delete(ire); 52647c478bd9Sstevel@tonic-gate ip1dbg(("ire_add_mrtun: ire_atomic_start failed\n")); 52657c478bd9Sstevel@tonic-gate *ire_p = NULL; 52667c478bd9Sstevel@tonic-gate return (error); 52677c478bd9Sstevel@tonic-gate } 52687c478bd9Sstevel@tonic-gate for (ire1 = irb_ptr->irb_ire; ire1 != NULL; ire1 = ire1->ire_next) { 52697c478bd9Sstevel@tonic-gate if (ire1->ire_marks & IRE_MARK_CONDEMNED) 52707c478bd9Sstevel@tonic-gate continue; 52717c478bd9Sstevel@tonic-gate /* has anyone inserted the route in the meanwhile ? */ 52727c478bd9Sstevel@tonic-gate if (ire1->ire_in_ill == ire->ire_in_ill && 52737c478bd9Sstevel@tonic-gate ire1->ire_in_src_addr == ire->ire_in_src_addr) { 52747c478bd9Sstevel@tonic-gate ip1dbg(("ire_add_mrtun: Duplicate entry exists\n")); 52757c478bd9Sstevel@tonic-gate IRE_REFHOLD(ire1); 52767c478bd9Sstevel@tonic-gate ire_atomic_end(irb_ptr, ire); 52777c478bd9Sstevel@tonic-gate ire_delete(ire); 52787c478bd9Sstevel@tonic-gate /* Return the old ire */ 52797c478bd9Sstevel@tonic-gate *ire_p = ire1; 52807c478bd9Sstevel@tonic-gate return (0); 52817c478bd9Sstevel@tonic-gate } 52827c478bd9Sstevel@tonic-gate } 52837c478bd9Sstevel@tonic-gate 52847c478bd9Sstevel@tonic-gate /* Atomically set the ire_max_frag */ 52857c478bd9Sstevel@tonic-gate max_frag = *ire->ire_max_fragp; 52867c478bd9Sstevel@tonic-gate ire->ire_max_fragp = NULL; 52877c478bd9Sstevel@tonic-gate ire->ire_max_frag = MIN(max_frag, IP_MAXPACKET); 5288c793af95Ssangeeta ASSERT(ire->ire_type != IRE_CACHE); 52897c478bd9Sstevel@tonic-gate irep = (ire_t **)irb_ptr; 52907c478bd9Sstevel@tonic-gate if (*irep != NULL) { 52917c478bd9Sstevel@tonic-gate /* Find the last ire which matches ire_in_src_addr */ 52927c478bd9Sstevel@tonic-gate ire1 = *irep; 52937c478bd9Sstevel@tonic-gate while (ire1->ire_in_src_addr == ire->ire_in_src_addr) { 52947c478bd9Sstevel@tonic-gate irep = &ire1->ire_next; 52957c478bd9Sstevel@tonic-gate ire1 = *irep; 52967c478bd9Sstevel@tonic-gate if (ire1 == NULL) 52977c478bd9Sstevel@tonic-gate break; 52987c478bd9Sstevel@tonic-gate } 52997c478bd9Sstevel@tonic-gate } 53007c478bd9Sstevel@tonic-gate ire1 = *irep; 53017c478bd9Sstevel@tonic-gate if (ire1 != NULL) 53027c478bd9Sstevel@tonic-gate ire1->ire_ptpn = &ire->ire_next; 53037c478bd9Sstevel@tonic-gate ire->ire_next = ire1; 53047c478bd9Sstevel@tonic-gate /* Link the new one in. */ 53057c478bd9Sstevel@tonic-gate ire->ire_ptpn = irep; 53067c478bd9Sstevel@tonic-gate membar_producer(); 53077c478bd9Sstevel@tonic-gate *irep = ire; 53087c478bd9Sstevel@tonic-gate ire->ire_bucket = irb_ptr; 53097c478bd9Sstevel@tonic-gate IRE_REFHOLD_LOCKED(ire); 53107c478bd9Sstevel@tonic-gate 53117c478bd9Sstevel@tonic-gate ip2dbg(("ire_add_mrtun: created and linked ire %p\n", (void *)*irep)); 53127c478bd9Sstevel@tonic-gate 53137c478bd9Sstevel@tonic-gate /* 53147c478bd9Sstevel@tonic-gate * Protect ire_mrtun_count and ill_mrtun_refcnt from 53157c478bd9Sstevel@tonic-gate * another thread trying to add ire in the table 53167c478bd9Sstevel@tonic-gate */ 5317f4b3ec61Sdh155122 mutex_enter(&ipst->ips_ire_mrtun_lock); 5318f4b3ec61Sdh155122 ipst->ips_ire_mrtun_count++; 5319f4b3ec61Sdh155122 mutex_exit(&ipst->ips_ire_mrtun_lock); 53207c478bd9Sstevel@tonic-gate /* 53217c478bd9Sstevel@tonic-gate * ill_mrtun_refcnt is protected by the ill_lock held via 53227c478bd9Sstevel@tonic-gate * ire_atomic_start 53237c478bd9Sstevel@tonic-gate */ 53247c478bd9Sstevel@tonic-gate ire->ire_in_ill->ill_mrtun_refcnt++; 53257c478bd9Sstevel@tonic-gate 53267c478bd9Sstevel@tonic-gate if (ire->ire_ipif != NULL) { 53277c478bd9Sstevel@tonic-gate ire->ire_ipif->ipif_ire_cnt++; 53287c478bd9Sstevel@tonic-gate if (ire->ire_stq != NULL) { 53297c478bd9Sstevel@tonic-gate stq_ill = (ill_t *)ire->ire_stq->q_ptr; 53307c478bd9Sstevel@tonic-gate stq_ill->ill_ire_cnt++; 53317c478bd9Sstevel@tonic-gate } 53327c478bd9Sstevel@tonic-gate } else { 53337c478bd9Sstevel@tonic-gate ASSERT(ire->ire_stq == NULL); 53347c478bd9Sstevel@tonic-gate } 53357c478bd9Sstevel@tonic-gate 53367c478bd9Sstevel@tonic-gate ire_atomic_end(irb_ptr, ire); 5337516bda92Ssowmini nce_fastpath(ire->ire_nce); 53387c478bd9Sstevel@tonic-gate *ire_p = ire; 53397c478bd9Sstevel@tonic-gate return (0); 53407c478bd9Sstevel@tonic-gate } 53417c478bd9Sstevel@tonic-gate 53427c478bd9Sstevel@tonic-gate 53437c478bd9Sstevel@tonic-gate /* Walks down the mrtun table */ 53447c478bd9Sstevel@tonic-gate 53457c478bd9Sstevel@tonic-gate void 53467c478bd9Sstevel@tonic-gate ire_walk_ill_mrtun(uint_t match_flags, uint_t ire_type, pfv_t func, void *arg, 5347f4b3ec61Sdh155122 ill_t *ill, ip_stack_t *ipst) 53487c478bd9Sstevel@tonic-gate { 53497c478bd9Sstevel@tonic-gate irb_t *irb; 53507c478bd9Sstevel@tonic-gate ire_t *ire; 53517c478bd9Sstevel@tonic-gate int i; 53527c478bd9Sstevel@tonic-gate int ret; 53537c478bd9Sstevel@tonic-gate 53547c478bd9Sstevel@tonic-gate ASSERT((!(match_flags & (MATCH_IRE_WQ | MATCH_IRE_ILL | 53557c478bd9Sstevel@tonic-gate MATCH_IRE_ILL_GROUP))) || (ill != NULL)); 53567c478bd9Sstevel@tonic-gate ASSERT(match_flags == 0 || ire_type == IRE_MIPRTUN); 53577c478bd9Sstevel@tonic-gate 5358f4b3ec61Sdh155122 mutex_enter(&ipst->ips_ire_mrtun_lock); 5359f4b3ec61Sdh155122 if (ipst->ips_ire_mrtun_count == 0) { 5360f4b3ec61Sdh155122 mutex_exit(&ipst->ips_ire_mrtun_lock); 53617c478bd9Sstevel@tonic-gate return; 53627c478bd9Sstevel@tonic-gate } 5363f4b3ec61Sdh155122 mutex_exit(&ipst->ips_ire_mrtun_lock); 53647c478bd9Sstevel@tonic-gate 53657c478bd9Sstevel@tonic-gate ip2dbg(("ire_walk_ill_mrtun:walking the reverse tunnel table \n")); 53667c478bd9Sstevel@tonic-gate for (i = 0; i < IP_MRTUN_TABLE_SIZE; i++) { 53677c478bd9Sstevel@tonic-gate 5368f4b3ec61Sdh155122 irb = &(ipst->ips_ip_mrtun_table[i]); 53697c478bd9Sstevel@tonic-gate if (irb->irb_ire == NULL) 53707c478bd9Sstevel@tonic-gate continue; 53717c478bd9Sstevel@tonic-gate IRB_REFHOLD(irb); 53727c478bd9Sstevel@tonic-gate for (ire = irb->irb_ire; ire != NULL; 53737c478bd9Sstevel@tonic-gate ire = ire->ire_next) { 53747c478bd9Sstevel@tonic-gate ASSERT(ire->ire_ipversion == IPV4_VERSION); 53757c478bd9Sstevel@tonic-gate if (match_flags != 0) { 53767c478bd9Sstevel@tonic-gate ret = ire_walk_ill_match( 53777c478bd9Sstevel@tonic-gate match_flags, ire_type, 5378f4b3ec61Sdh155122 ire, ill, ALL_ZONES, ipst); 53797c478bd9Sstevel@tonic-gate } 53807c478bd9Sstevel@tonic-gate if (match_flags == 0 || ret) 53817c478bd9Sstevel@tonic-gate (*func)(ire, arg); 53827c478bd9Sstevel@tonic-gate } 53837c478bd9Sstevel@tonic-gate IRB_REFRELE(irb); 53847c478bd9Sstevel@tonic-gate } 53857c478bd9Sstevel@tonic-gate } 53867c478bd9Sstevel@tonic-gate 53877c478bd9Sstevel@tonic-gate /* 53887c478bd9Sstevel@tonic-gate * Source interface based lookup routine (IPV4 only). 53897c478bd9Sstevel@tonic-gate * This routine is called only when RTA_SRCIFP bitflag is set 53907c478bd9Sstevel@tonic-gate * by routing socket while adding/deleting the route and it is 53917c478bd9Sstevel@tonic-gate * also called from ip_rput() when packets arrive from an interface 53927c478bd9Sstevel@tonic-gate * for which ill_srcif_ref_cnt is positive. This function is useful 53937c478bd9Sstevel@tonic-gate * when a packet coming from one interface must be forwarded to another 53947c478bd9Sstevel@tonic-gate * designated interface to reach the correct node. This function is also 53957c478bd9Sstevel@tonic-gate * called from ip_newroute when the link-layer address of an ire is resolved. 53967c478bd9Sstevel@tonic-gate * We need to make sure that ip_newroute searches for IRE_IF_RESOLVER type 53977c478bd9Sstevel@tonic-gate * ires--thus the ire_type parameter is needed. 53987c478bd9Sstevel@tonic-gate */ 53997c478bd9Sstevel@tonic-gate 54007c478bd9Sstevel@tonic-gate ire_t * 54017c478bd9Sstevel@tonic-gate ire_srcif_table_lookup(ipaddr_t dst_addr, int ire_type, ipif_t *ipif, 54027c478bd9Sstevel@tonic-gate ill_t *in_ill, int flags) 54037c478bd9Sstevel@tonic-gate { 54047c478bd9Sstevel@tonic-gate irb_t *irb_ptr; 54057c478bd9Sstevel@tonic-gate ire_t *ire; 54067c478bd9Sstevel@tonic-gate irb_t *ire_srcif_table; 54077c478bd9Sstevel@tonic-gate 54087c478bd9Sstevel@tonic-gate ASSERT(in_ill != NULL && !in_ill->ill_isv6); 54097c478bd9Sstevel@tonic-gate ASSERT(!(flags & (MATCH_IRE_ILL|MATCH_IRE_ILL_GROUP)) || 54107c478bd9Sstevel@tonic-gate (ipif != NULL && !ipif->ipif_isv6)); 54117c478bd9Sstevel@tonic-gate 54127c478bd9Sstevel@tonic-gate /* 54137c478bd9Sstevel@tonic-gate * No need to lock the ill since it is refheld by the caller of this 54147c478bd9Sstevel@tonic-gate * function 54157c478bd9Sstevel@tonic-gate */ 54167c478bd9Sstevel@tonic-gate if (in_ill->ill_srcif_table == NULL) { 54177c478bd9Sstevel@tonic-gate return (NULL); 54187c478bd9Sstevel@tonic-gate } 54197c478bd9Sstevel@tonic-gate 54207c478bd9Sstevel@tonic-gate if (!(flags & MATCH_IRE_TYPE)) { 54217c478bd9Sstevel@tonic-gate flags |= MATCH_IRE_TYPE; 54227c478bd9Sstevel@tonic-gate ire_type = IRE_INTERFACE; 54237c478bd9Sstevel@tonic-gate } 54247c478bd9Sstevel@tonic-gate ire_srcif_table = in_ill->ill_srcif_table; 54257c478bd9Sstevel@tonic-gate irb_ptr = &ire_srcif_table[IRE_ADDR_HASH(dst_addr, 54267c478bd9Sstevel@tonic-gate IP_SRCIF_TABLE_SIZE)]; 54277c478bd9Sstevel@tonic-gate rw_enter(&irb_ptr->irb_lock, RW_READER); 54287c478bd9Sstevel@tonic-gate for (ire = irb_ptr->irb_ire; ire != NULL; ire = ire->ire_next) { 54297c478bd9Sstevel@tonic-gate if (ire->ire_marks & IRE_MARK_CONDEMNED) 54307c478bd9Sstevel@tonic-gate continue; 54317c478bd9Sstevel@tonic-gate if (ire_match_args(ire, dst_addr, ire->ire_mask, 0, 543245916cd2Sjpk ire_type, ipif, ire->ire_zoneid, 0, NULL, flags)) { 54337c478bd9Sstevel@tonic-gate IRE_REFHOLD(ire); 54347c478bd9Sstevel@tonic-gate rw_exit(&irb_ptr->irb_lock); 54357c478bd9Sstevel@tonic-gate return (ire); 54367c478bd9Sstevel@tonic-gate } 54377c478bd9Sstevel@tonic-gate } 54387c478bd9Sstevel@tonic-gate /* Not Found */ 54397c478bd9Sstevel@tonic-gate rw_exit(&irb_ptr->irb_lock); 54407c478bd9Sstevel@tonic-gate return (NULL); 54417c478bd9Sstevel@tonic-gate } 54427c478bd9Sstevel@tonic-gate 54437c478bd9Sstevel@tonic-gate 54447c478bd9Sstevel@tonic-gate /* 54457c478bd9Sstevel@tonic-gate * Adds the ire into the special routing table which is hanging off of 54467c478bd9Sstevel@tonic-gate * the src_ipif->ipif_ill. It also increments the refcnt in the ill. 54477c478bd9Sstevel@tonic-gate * The forward table contains only IRE_IF_RESOLVER, IRE_IF_NORESOLVER 54487c478bd9Sstevel@tonic-gate * i,e. IRE_INTERFACE entries. Originally the dlureq_mp field is NULL 54497c478bd9Sstevel@tonic-gate * for IRE_IF_RESOLVER entry because we do not have the dst_addr's 54507c478bd9Sstevel@tonic-gate * link-layer address at the time of addition. 54517c478bd9Sstevel@tonic-gate * Upon resolving the address from ARP, dlureq_mp field is updated with 54527c478bd9Sstevel@tonic-gate * proper information in ire_update_srcif_v4. 54537c478bd9Sstevel@tonic-gate */ 54547c478bd9Sstevel@tonic-gate static int 54557c478bd9Sstevel@tonic-gate ire_add_srcif_v4(ire_t **ire_p, queue_t *q, mblk_t *mp, ipsq_func_t func) 54567c478bd9Sstevel@tonic-gate { 54577c478bd9Sstevel@tonic-gate ire_t *ire1; 54587c478bd9Sstevel@tonic-gate irb_t *ire_srcifp_table = NULL; 54597c478bd9Sstevel@tonic-gate irb_t *irb_ptr = NULL; 54607c478bd9Sstevel@tonic-gate ire_t **irep; 54617c478bd9Sstevel@tonic-gate ire_t *ire; 54627c478bd9Sstevel@tonic-gate int flags; 54637c478bd9Sstevel@tonic-gate int i; 54647c478bd9Sstevel@tonic-gate ill_t *stq_ill; 54657c478bd9Sstevel@tonic-gate uint_t max_frag; 54667c478bd9Sstevel@tonic-gate int error = 0; 5467f4b3ec61Sdh155122 ip_stack_t *ipst; 54687c478bd9Sstevel@tonic-gate 54697c478bd9Sstevel@tonic-gate ire = *ire_p; 5470f4b3ec61Sdh155122 ipst = ire->ire_ipst; 54717c478bd9Sstevel@tonic-gate ASSERT(ire->ire_in_ill != NULL); 54727c478bd9Sstevel@tonic-gate ASSERT(ire->ire_ipversion == IPV4_VERSION); 54737c478bd9Sstevel@tonic-gate ASSERT(ire->ire_type == IRE_IF_NORESOLVER || 54747c478bd9Sstevel@tonic-gate ire->ire_type == IRE_IF_RESOLVER); 54757c478bd9Sstevel@tonic-gate 54767c478bd9Sstevel@tonic-gate ire->ire_mask = IP_HOST_MASK; 5477c793af95Ssangeeta /* 5478c793af95Ssangeeta * Update ire_nce->nce_res_mp with NULL value upon creation; 5479c793af95Ssangeeta * first free the default res_mp created by ire_nce_init. 5480c793af95Ssangeeta */ 5481c793af95Ssangeeta freeb(ire->ire_nce->nce_res_mp); 54827c478bd9Sstevel@tonic-gate if (ire->ire_type == IRE_IF_RESOLVER) { 54837c478bd9Sstevel@tonic-gate /* 54847c478bd9Sstevel@tonic-gate * assign NULL now, it will be updated 54857c478bd9Sstevel@tonic-gate * with correct value upon returning from 54867c478bd9Sstevel@tonic-gate * ARP 54877c478bd9Sstevel@tonic-gate */ 5488c793af95Ssangeeta ire->ire_nce->nce_res_mp = NULL; 54897c478bd9Sstevel@tonic-gate } else { 5490c793af95Ssangeeta ire->ire_nce->nce_res_mp = ill_dlur_gen(NULL, 54917c478bd9Sstevel@tonic-gate ire->ire_ipif->ipif_ill->ill_phys_addr_length, 54927c478bd9Sstevel@tonic-gate ire->ire_ipif->ipif_ill->ill_sap, 54937c478bd9Sstevel@tonic-gate ire->ire_ipif->ipif_ill->ill_sap_length); 54947c478bd9Sstevel@tonic-gate } 54957c478bd9Sstevel@tonic-gate /* Make sure the address is properly masked. */ 54967c478bd9Sstevel@tonic-gate ire->ire_addr &= ire->ire_mask; 54977c478bd9Sstevel@tonic-gate 54987c478bd9Sstevel@tonic-gate ASSERT(ire->ire_max_fragp != NULL); 54997c478bd9Sstevel@tonic-gate max_frag = *ire->ire_max_fragp; 55007c478bd9Sstevel@tonic-gate ire->ire_max_fragp = NULL; 55017c478bd9Sstevel@tonic-gate ire->ire_max_frag = MIN(max_frag, IP_MAXPACKET); 55027c478bd9Sstevel@tonic-gate 55037c478bd9Sstevel@tonic-gate mutex_enter(&ire->ire_in_ill->ill_lock); 55047c478bd9Sstevel@tonic-gate if (ire->ire_in_ill->ill_srcif_table == NULL) { 55057c478bd9Sstevel@tonic-gate /* create the incoming interface based table */ 5506f4b3ec61Sdh155122 ire->ire_in_ill->ill_srcif_table = kmem_zalloc( 5507f4b3ec61Sdh155122 IP_SRCIF_TABLE_SIZE * sizeof (irb_t), KM_NOSLEEP); 55087c478bd9Sstevel@tonic-gate if (ire->ire_in_ill->ill_srcif_table == NULL) { 55097c478bd9Sstevel@tonic-gate ip1dbg(("ire_add_srcif_v4: Allocation fail\n")); 55107c478bd9Sstevel@tonic-gate mutex_exit(&ire->ire_in_ill->ill_lock); 55117c478bd9Sstevel@tonic-gate ire_delete(ire); 55127c478bd9Sstevel@tonic-gate *ire_p = NULL; 55137c478bd9Sstevel@tonic-gate return (ENOMEM); 55147c478bd9Sstevel@tonic-gate } 55157c478bd9Sstevel@tonic-gate ire_srcifp_table = ire->ire_in_ill->ill_srcif_table; 55167c478bd9Sstevel@tonic-gate for (i = 0; i < IP_SRCIF_TABLE_SIZE; i++) { 55177c478bd9Sstevel@tonic-gate rw_init(&ire_srcifp_table[i].irb_lock, NULL, 55187c478bd9Sstevel@tonic-gate RW_DEFAULT, NULL); 55197c478bd9Sstevel@tonic-gate } 55207c478bd9Sstevel@tonic-gate ip2dbg(("ire_add_srcif_v4: table created for ill %p\n", 55217c478bd9Sstevel@tonic-gate (void *)ire->ire_in_ill)); 55227c478bd9Sstevel@tonic-gate } 55237c478bd9Sstevel@tonic-gate /* Check for duplicate and insert */ 55247c478bd9Sstevel@tonic-gate ASSERT(ire->ire_in_ill->ill_srcif_table != NULL); 55257c478bd9Sstevel@tonic-gate irb_ptr = 55267c478bd9Sstevel@tonic-gate &(ire->ire_in_ill->ill_srcif_table[IRE_ADDR_HASH(ire->ire_addr, 55277c478bd9Sstevel@tonic-gate IP_SRCIF_TABLE_SIZE)]); 55287c478bd9Sstevel@tonic-gate mutex_exit(&ire->ire_in_ill->ill_lock); 55297c478bd9Sstevel@tonic-gate flags = (MATCH_IRE_MASK | MATCH_IRE_TYPE | MATCH_IRE_GW); 55307c478bd9Sstevel@tonic-gate flags |= MATCH_IRE_IPIF; 55317c478bd9Sstevel@tonic-gate 55327c478bd9Sstevel@tonic-gate /* 55337c478bd9Sstevel@tonic-gate * Start the atomic add of the ire. Grab the ill locks, 55347c478bd9Sstevel@tonic-gate * ill_g_usesrc_lock and the bucket lock. 55357c478bd9Sstevel@tonic-gate * 55367c478bd9Sstevel@tonic-gate * If ipif or ill is changing ire_atomic_start() may queue the 55377c478bd9Sstevel@tonic-gate * request and return EINPROGRESS. 55387c478bd9Sstevel@tonic-gate */ 55397c478bd9Sstevel@tonic-gate error = ire_atomic_start(irb_ptr, ire, q, mp, func); 55407c478bd9Sstevel@tonic-gate if (error != 0) { 55417c478bd9Sstevel@tonic-gate /* 55427c478bd9Sstevel@tonic-gate * We don't know whether it is a valid ipif or not. 55437c478bd9Sstevel@tonic-gate * So, set it to NULL. This assumes that the ire has not added 55447c478bd9Sstevel@tonic-gate * a reference to the ipif. 55457c478bd9Sstevel@tonic-gate */ 55467c478bd9Sstevel@tonic-gate ire->ire_ipif = NULL; 55477c478bd9Sstevel@tonic-gate ire_delete(ire); 55487c478bd9Sstevel@tonic-gate ip1dbg(("ire_add_srcif_v4: ire_atomic_start failed\n")); 55497c478bd9Sstevel@tonic-gate *ire_p = NULL; 55507c478bd9Sstevel@tonic-gate return (error); 55517c478bd9Sstevel@tonic-gate } 55527c478bd9Sstevel@tonic-gate for (ire1 = irb_ptr->irb_ire; ire1 != NULL; ire1 = ire1->ire_next) { 55537c478bd9Sstevel@tonic-gate if (ire1->ire_marks & IRE_MARK_CONDEMNED) 55547c478bd9Sstevel@tonic-gate continue; 55557c478bd9Sstevel@tonic-gate if (ire1->ire_zoneid != ire->ire_zoneid) 55567c478bd9Sstevel@tonic-gate continue; 55577c478bd9Sstevel@tonic-gate /* Has anyone inserted route in the meanwhile ? */ 55587c478bd9Sstevel@tonic-gate if (ire_match_args(ire1, ire->ire_addr, ire->ire_mask, 0, 555945916cd2Sjpk ire->ire_type, ire->ire_ipif, ire->ire_zoneid, 0, NULL, 556045916cd2Sjpk flags)) { 55617c478bd9Sstevel@tonic-gate ip1dbg(("ire_add_srcif_v4 : Duplicate entry exists\n")); 55627c478bd9Sstevel@tonic-gate IRE_REFHOLD(ire1); 55637c478bd9Sstevel@tonic-gate ire_atomic_end(irb_ptr, ire); 55647c478bd9Sstevel@tonic-gate ire_delete(ire); 55657c478bd9Sstevel@tonic-gate /* Return old ire as in ire_add_v4 */ 55667c478bd9Sstevel@tonic-gate *ire_p = ire1; 55677c478bd9Sstevel@tonic-gate return (0); 55687c478bd9Sstevel@tonic-gate } 55697c478bd9Sstevel@tonic-gate } 55707c478bd9Sstevel@tonic-gate irep = (ire_t **)irb_ptr; 55717c478bd9Sstevel@tonic-gate if (*irep != NULL) { 55727c478bd9Sstevel@tonic-gate /* Find the last ire which matches ire_addr */ 55737c478bd9Sstevel@tonic-gate ire1 = *irep; 55747c478bd9Sstevel@tonic-gate while (ire1->ire_addr == ire->ire_addr) { 55757c478bd9Sstevel@tonic-gate irep = &ire1->ire_next; 55767c478bd9Sstevel@tonic-gate ire1 = *irep; 55777c478bd9Sstevel@tonic-gate if (ire1 == NULL) 55787c478bd9Sstevel@tonic-gate break; 55797c478bd9Sstevel@tonic-gate } 55807c478bd9Sstevel@tonic-gate } 55817c478bd9Sstevel@tonic-gate ire1 = *irep; 55827c478bd9Sstevel@tonic-gate if (ire1 != NULL) 55837c478bd9Sstevel@tonic-gate ire1->ire_ptpn = &ire->ire_next; 55847c478bd9Sstevel@tonic-gate ire->ire_next = ire1; 55857c478bd9Sstevel@tonic-gate /* Link the new one in. */ 55867c478bd9Sstevel@tonic-gate ire->ire_ptpn = irep; 55877c478bd9Sstevel@tonic-gate membar_producer(); 55887c478bd9Sstevel@tonic-gate *irep = ire; 55897c478bd9Sstevel@tonic-gate ire->ire_bucket = irb_ptr; 55907c478bd9Sstevel@tonic-gate IRE_REFHOLD_LOCKED(ire); 55917c478bd9Sstevel@tonic-gate 55927c478bd9Sstevel@tonic-gate /* 55937c478bd9Sstevel@tonic-gate * Protect ire_in_ill->ill_srcif_refcnt and table reference count. 55947c478bd9Sstevel@tonic-gate * Note, ire_atomic_start already grabs the ire_in_ill->ill_lock 55957c478bd9Sstevel@tonic-gate * so ill_srcif_refcnt is already protected. 55967c478bd9Sstevel@tonic-gate */ 55977c478bd9Sstevel@tonic-gate ire->ire_in_ill->ill_srcif_refcnt++; 5598f4b3ec61Sdh155122 mutex_enter(&ipst->ips_ire_srcif_table_lock); 5599f4b3ec61Sdh155122 ipst->ips_ire_srcif_table_count++; 5600f4b3ec61Sdh155122 mutex_exit(&ipst->ips_ire_srcif_table_lock); 56017c478bd9Sstevel@tonic-gate irb_ptr->irb_ire_cnt++; 56027c478bd9Sstevel@tonic-gate if (ire->ire_ipif != NULL) { 56037c478bd9Sstevel@tonic-gate ire->ire_ipif->ipif_ire_cnt++; 56047c478bd9Sstevel@tonic-gate if (ire->ire_stq != NULL) { 56057c478bd9Sstevel@tonic-gate stq_ill = (ill_t *)ire->ire_stq->q_ptr; 56067c478bd9Sstevel@tonic-gate stq_ill->ill_ire_cnt++; 56077c478bd9Sstevel@tonic-gate } 56087c478bd9Sstevel@tonic-gate } else { 56097c478bd9Sstevel@tonic-gate ASSERT(ire->ire_stq == NULL); 56107c478bd9Sstevel@tonic-gate } 56117c478bd9Sstevel@tonic-gate 56127c478bd9Sstevel@tonic-gate ire_atomic_end(irb_ptr, ire); 56137c478bd9Sstevel@tonic-gate *ire_p = ire; 56147c478bd9Sstevel@tonic-gate return (0); 56157c478bd9Sstevel@tonic-gate } 56167c478bd9Sstevel@tonic-gate 56177c478bd9Sstevel@tonic-gate 56187c478bd9Sstevel@tonic-gate /* 56197c478bd9Sstevel@tonic-gate * This function is called by ire_add_then_send when ARP request comes 56207c478bd9Sstevel@tonic-gate * back to ip_wput->ire_add_then_send for resolved ire in the interface 56217c478bd9Sstevel@tonic-gate * based routing table. At this point, it only needs to update the resolver 56227c478bd9Sstevel@tonic-gate * information for the ire. The passed ire is returned to the caller as it 56237c478bd9Sstevel@tonic-gate * is the ire which is created as mblk. 56247c478bd9Sstevel@tonic-gate */ 56257c478bd9Sstevel@tonic-gate static ire_t * 56267c478bd9Sstevel@tonic-gate ire_update_srcif_v4(ire_t *ire) 56277c478bd9Sstevel@tonic-gate { 56287c478bd9Sstevel@tonic-gate ire_t *ire1; 56297c478bd9Sstevel@tonic-gate irb_t *irb; 56307c478bd9Sstevel@tonic-gate int error; 56317c478bd9Sstevel@tonic-gate 56327c478bd9Sstevel@tonic-gate ASSERT(ire->ire_type != IRE_MIPRTUN && 56337c478bd9Sstevel@tonic-gate ire->ire_ipif->ipif_net_type == IRE_IF_RESOLVER); 56347c478bd9Sstevel@tonic-gate ASSERT(ire->ire_ipversion == IPV4_VERSION); 56357c478bd9Sstevel@tonic-gate 56367c478bd9Sstevel@tonic-gate /* 56377c478bd9Sstevel@tonic-gate * This ire is from ARP. Update 5638c793af95Ssangeeta * ire_nce->nce_res_mp info 56397c478bd9Sstevel@tonic-gate */ 56407c478bd9Sstevel@tonic-gate ire1 = ire_srcif_table_lookup(ire->ire_addr, 56417c478bd9Sstevel@tonic-gate IRE_IF_RESOLVER, ire->ire_ipif, 56427c478bd9Sstevel@tonic-gate ire->ire_in_ill, 56437c478bd9Sstevel@tonic-gate MATCH_IRE_ILL | MATCH_IRE_TYPE); 56447c478bd9Sstevel@tonic-gate if (ire1 == NULL) { 56457c478bd9Sstevel@tonic-gate /* Mobile node registration expired ? */ 56467c478bd9Sstevel@tonic-gate ire_delete(ire); 56477c478bd9Sstevel@tonic-gate return (NULL); 56487c478bd9Sstevel@tonic-gate } 56497c478bd9Sstevel@tonic-gate irb = ire1->ire_bucket; 56507c478bd9Sstevel@tonic-gate ASSERT(irb != NULL); 56517c478bd9Sstevel@tonic-gate /* 56527c478bd9Sstevel@tonic-gate * Start the atomic add of the ire. Grab the ill locks, 56537c478bd9Sstevel@tonic-gate * ill_g_usesrc_lock and the bucket lock. 56547c478bd9Sstevel@tonic-gate */ 56557c478bd9Sstevel@tonic-gate error = ire_atomic_start(irb, ire1, NULL, NULL, NULL); 56567c478bd9Sstevel@tonic-gate if (error != 0) { 56577c478bd9Sstevel@tonic-gate /* 56587c478bd9Sstevel@tonic-gate * We don't know whether it is a valid ipif or not. 56597c478bd9Sstevel@tonic-gate * So, set it to NULL. This assumes that the ire has not added 56607c478bd9Sstevel@tonic-gate * a reference to the ipif. 56617c478bd9Sstevel@tonic-gate */ 56627c478bd9Sstevel@tonic-gate ire->ire_ipif = NULL; 56637c478bd9Sstevel@tonic-gate ire_delete(ire); 56647c478bd9Sstevel@tonic-gate ip1dbg(("ire_update_srcif_v4: ire_atomic_start failed\n")); 56657c478bd9Sstevel@tonic-gate return (NULL); 56667c478bd9Sstevel@tonic-gate } 56677c478bd9Sstevel@tonic-gate ASSERT(ire->ire_max_fragp == NULL); 56687c478bd9Sstevel@tonic-gate ire->ire_max_frag = ire1->ire_max_frag; 56697c478bd9Sstevel@tonic-gate /* 56707c478bd9Sstevel@tonic-gate * Update resolver information and 56717c478bd9Sstevel@tonic-gate * send-to queue. 56727c478bd9Sstevel@tonic-gate */ 5673c793af95Ssangeeta ASSERT(ire->ire_nce->nce_res_mp != NULL); 5674c793af95Ssangeeta ire1->ire_nce->nce_res_mp = copyb(ire->ire_nce->nce_res_mp); 5675c793af95Ssangeeta if (ire1->ire_nce->nce_res_mp == NULL) { 56767c478bd9Sstevel@tonic-gate ip0dbg(("ire_update_srcif: copyb failed\n")); 56777c478bd9Sstevel@tonic-gate ire_refrele(ire1); 56787c478bd9Sstevel@tonic-gate ire_refrele(ire); 56797c478bd9Sstevel@tonic-gate ire_atomic_end(irb, ire1); 56807c478bd9Sstevel@tonic-gate return (NULL); 56817c478bd9Sstevel@tonic-gate } 56827c478bd9Sstevel@tonic-gate ire1->ire_stq = ire->ire_stq; 56837c478bd9Sstevel@tonic-gate 5684c793af95Ssangeeta ASSERT(ire->ire_nce->nce_fp_mp == NULL); 56857c478bd9Sstevel@tonic-gate 56867c478bd9Sstevel@tonic-gate ire_atomic_end(irb, ire1); 56877c478bd9Sstevel@tonic-gate ire_refrele(ire1); 56887c478bd9Sstevel@tonic-gate /* Return the passed ire */ 56897c478bd9Sstevel@tonic-gate return (ire); /* Update done */ 56907c478bd9Sstevel@tonic-gate } 56917c478bd9Sstevel@tonic-gate 56927c478bd9Sstevel@tonic-gate 56937c478bd9Sstevel@tonic-gate /* 56947c478bd9Sstevel@tonic-gate * Check if another multirt route resolution is needed. 56957c478bd9Sstevel@tonic-gate * B_TRUE is returned is there remain a resolvable route, 56967c478bd9Sstevel@tonic-gate * or if no route for that dst is resolved yet. 56977c478bd9Sstevel@tonic-gate * B_FALSE is returned if all routes for that dst are resolved 56987c478bd9Sstevel@tonic-gate * or if the remaining unresolved routes are actually not 56997c478bd9Sstevel@tonic-gate * resolvable. 57007c478bd9Sstevel@tonic-gate * This only works in the global zone. 57017c478bd9Sstevel@tonic-gate */ 57027c478bd9Sstevel@tonic-gate boolean_t 5703f4b3ec61Sdh155122 ire_multirt_need_resolve(ipaddr_t dst, const ts_label_t *tsl, ip_stack_t *ipst) 57047c478bd9Sstevel@tonic-gate { 57057c478bd9Sstevel@tonic-gate ire_t *first_fire; 57067c478bd9Sstevel@tonic-gate ire_t *first_cire; 57077c478bd9Sstevel@tonic-gate ire_t *fire; 57087c478bd9Sstevel@tonic-gate ire_t *cire; 57097c478bd9Sstevel@tonic-gate irb_t *firb; 57107c478bd9Sstevel@tonic-gate irb_t *cirb; 57117c478bd9Sstevel@tonic-gate int unres_cnt = 0; 57127c478bd9Sstevel@tonic-gate boolean_t resolvable = B_FALSE; 57137c478bd9Sstevel@tonic-gate 57147c478bd9Sstevel@tonic-gate /* Retrieve the first IRE_HOST that matches the destination */ 57157c478bd9Sstevel@tonic-gate first_fire = ire_ftable_lookup(dst, IP_HOST_MASK, 0, IRE_HOST, NULL, 571645916cd2Sjpk NULL, ALL_ZONES, 0, tsl, 5717f4b3ec61Sdh155122 MATCH_IRE_MASK | MATCH_IRE_TYPE | MATCH_IRE_SECATTR, ipst); 57187c478bd9Sstevel@tonic-gate 57197c478bd9Sstevel@tonic-gate /* No route at all */ 57207c478bd9Sstevel@tonic-gate if (first_fire == NULL) { 57217c478bd9Sstevel@tonic-gate return (B_TRUE); 57227c478bd9Sstevel@tonic-gate } 57237c478bd9Sstevel@tonic-gate 57247c478bd9Sstevel@tonic-gate firb = first_fire->ire_bucket; 57257c478bd9Sstevel@tonic-gate ASSERT(firb != NULL); 57267c478bd9Sstevel@tonic-gate 57277c478bd9Sstevel@tonic-gate /* Retrieve the first IRE_CACHE ire for that destination. */ 5728f4b3ec61Sdh155122 first_cire = ire_cache_lookup(dst, GLOBAL_ZONEID, tsl, ipst); 57297c478bd9Sstevel@tonic-gate 57307c478bd9Sstevel@tonic-gate /* No resolved route. */ 57317c478bd9Sstevel@tonic-gate if (first_cire == NULL) { 57327c478bd9Sstevel@tonic-gate ire_refrele(first_fire); 57337c478bd9Sstevel@tonic-gate return (B_TRUE); 57347c478bd9Sstevel@tonic-gate } 57357c478bd9Sstevel@tonic-gate 57367c478bd9Sstevel@tonic-gate /* 57377c478bd9Sstevel@tonic-gate * At least one route is resolved. Here we look through the forward 57387c478bd9Sstevel@tonic-gate * and cache tables, to compare the number of declared routes 57397c478bd9Sstevel@tonic-gate * with the number of resolved routes. The search for a resolvable 57407c478bd9Sstevel@tonic-gate * route is performed only if at least one route remains 57417c478bd9Sstevel@tonic-gate * unresolved. 57427c478bd9Sstevel@tonic-gate */ 57437c478bd9Sstevel@tonic-gate cirb = first_cire->ire_bucket; 57447c478bd9Sstevel@tonic-gate ASSERT(cirb != NULL); 57457c478bd9Sstevel@tonic-gate 57467c478bd9Sstevel@tonic-gate /* Count the number of routes to that dest that are declared. */ 57477c478bd9Sstevel@tonic-gate IRB_REFHOLD(firb); 57487c478bd9Sstevel@tonic-gate for (fire = first_fire; fire != NULL; fire = fire->ire_next) { 57497c478bd9Sstevel@tonic-gate if (!(fire->ire_flags & RTF_MULTIRT)) 57507c478bd9Sstevel@tonic-gate continue; 57517c478bd9Sstevel@tonic-gate if (fire->ire_addr != dst) 57527c478bd9Sstevel@tonic-gate continue; 57537c478bd9Sstevel@tonic-gate unres_cnt++; 57547c478bd9Sstevel@tonic-gate } 57557c478bd9Sstevel@tonic-gate IRB_REFRELE(firb); 57567c478bd9Sstevel@tonic-gate 57577c478bd9Sstevel@tonic-gate /* Then subtract the number of routes to that dst that are resolved */ 57587c478bd9Sstevel@tonic-gate IRB_REFHOLD(cirb); 57597c478bd9Sstevel@tonic-gate for (cire = first_cire; cire != NULL; cire = cire->ire_next) { 57607c478bd9Sstevel@tonic-gate if (!(cire->ire_flags & RTF_MULTIRT)) 57617c478bd9Sstevel@tonic-gate continue; 57627c478bd9Sstevel@tonic-gate if (cire->ire_addr != dst) 57637c478bd9Sstevel@tonic-gate continue; 57647c478bd9Sstevel@tonic-gate if (cire->ire_marks & (IRE_MARK_CONDEMNED | IRE_MARK_HIDDEN)) 57657c478bd9Sstevel@tonic-gate continue; 57667c478bd9Sstevel@tonic-gate unres_cnt--; 57677c478bd9Sstevel@tonic-gate } 57687c478bd9Sstevel@tonic-gate IRB_REFRELE(cirb); 57697c478bd9Sstevel@tonic-gate 57707c478bd9Sstevel@tonic-gate /* At least one route is unresolved; search for a resolvable route. */ 57717c478bd9Sstevel@tonic-gate if (unres_cnt > 0) 57727c478bd9Sstevel@tonic-gate resolvable = ire_multirt_lookup(&first_cire, &first_fire, 5773f4b3ec61Sdh155122 MULTIRT_USESTAMP | MULTIRT_CACHEGW, tsl, ipst); 57747c478bd9Sstevel@tonic-gate 57757c478bd9Sstevel@tonic-gate if (first_fire != NULL) 57767c478bd9Sstevel@tonic-gate ire_refrele(first_fire); 57777c478bd9Sstevel@tonic-gate 57787c478bd9Sstevel@tonic-gate if (first_cire != NULL) 57797c478bd9Sstevel@tonic-gate ire_refrele(first_cire); 57807c478bd9Sstevel@tonic-gate 57817c478bd9Sstevel@tonic-gate return (resolvable); 57827c478bd9Sstevel@tonic-gate } 57837c478bd9Sstevel@tonic-gate 57847c478bd9Sstevel@tonic-gate 57857c478bd9Sstevel@tonic-gate /* 57867c478bd9Sstevel@tonic-gate * Explore a forward_table bucket, starting from fire_arg. 57877c478bd9Sstevel@tonic-gate * fire_arg MUST be an IRE_HOST entry. 57887c478bd9Sstevel@tonic-gate * 57897c478bd9Sstevel@tonic-gate * Return B_TRUE and update *ire_arg and *fire_arg 57907c478bd9Sstevel@tonic-gate * if at least one resolvable route is found. *ire_arg 57917c478bd9Sstevel@tonic-gate * is the IRE entry for *fire_arg's gateway. 57927c478bd9Sstevel@tonic-gate * 57937c478bd9Sstevel@tonic-gate * Return B_FALSE otherwise (all routes are resolved or 57947c478bd9Sstevel@tonic-gate * the remaining unresolved routes are all unresolvable). 57957c478bd9Sstevel@tonic-gate * 57967c478bd9Sstevel@tonic-gate * The IRE selection relies on a priority mechanism 57977c478bd9Sstevel@tonic-gate * driven by the flags passed in by the caller. 57987c478bd9Sstevel@tonic-gate * The caller, such as ip_newroute_ipif(), can get the most 57997c478bd9Sstevel@tonic-gate * relevant ire at each stage of a multiple route resolution. 58007c478bd9Sstevel@tonic-gate * 58017c478bd9Sstevel@tonic-gate * The rules are: 58027c478bd9Sstevel@tonic-gate * 58037c478bd9Sstevel@tonic-gate * - if MULTIRT_CACHEGW is specified in flags, IRE_CACHETABLE 58047c478bd9Sstevel@tonic-gate * ires are preferred for the gateway. This gives the highest 58057c478bd9Sstevel@tonic-gate * priority to routes that can be resolved without using 58067c478bd9Sstevel@tonic-gate * a resolver. 58077c478bd9Sstevel@tonic-gate * 58087c478bd9Sstevel@tonic-gate * - if MULTIRT_CACHEGW is not specified, or if MULTIRT_CACHEGW 58097c478bd9Sstevel@tonic-gate * is specified but no IRE_CACHETABLE ire entry for the gateway 58107c478bd9Sstevel@tonic-gate * is found, the following rules apply. 58117c478bd9Sstevel@tonic-gate * 58127c478bd9Sstevel@tonic-gate * - if MULTIRT_USESTAMP is specified in flags, IRE_INTERFACE 58137c478bd9Sstevel@tonic-gate * ires for the gateway, that have not been tried since 58147c478bd9Sstevel@tonic-gate * a configurable amount of time, are preferred. 58157c478bd9Sstevel@tonic-gate * This applies when a resolver must be invoked for 58167c478bd9Sstevel@tonic-gate * a missing route, but we don't want to use the resolver 58177c478bd9Sstevel@tonic-gate * upon each packet emission. If no such resolver is found, 58187c478bd9Sstevel@tonic-gate * B_FALSE is returned. 58197c478bd9Sstevel@tonic-gate * The MULTIRT_USESTAMP flag can be combined with 58207c478bd9Sstevel@tonic-gate * MULTIRT_CACHEGW. 58217c478bd9Sstevel@tonic-gate * 58227c478bd9Sstevel@tonic-gate * - if MULTIRT_USESTAMP is not specified in flags, the first 58237c478bd9Sstevel@tonic-gate * unresolved but resolvable route is selected. 58247c478bd9Sstevel@tonic-gate * 58257c478bd9Sstevel@tonic-gate * - Otherwise, there is no resolvalble route, and 58267c478bd9Sstevel@tonic-gate * B_FALSE is returned. 58277c478bd9Sstevel@tonic-gate * 58287c478bd9Sstevel@tonic-gate * At last, MULTIRT_SETSTAMP can be specified in flags to 58297c478bd9Sstevel@tonic-gate * request the timestamp of unresolvable routes to 58307c478bd9Sstevel@tonic-gate * be refreshed. This prevents the useless exploration 58317c478bd9Sstevel@tonic-gate * of those routes for a while, when MULTIRT_USESTAMP is used. 58327c478bd9Sstevel@tonic-gate * 58337c478bd9Sstevel@tonic-gate * This only works in the global zone. 58347c478bd9Sstevel@tonic-gate */ 58357c478bd9Sstevel@tonic-gate boolean_t 583645916cd2Sjpk ire_multirt_lookup(ire_t **ire_arg, ire_t **fire_arg, uint32_t flags, 5837f4b3ec61Sdh155122 const ts_label_t *tsl, ip_stack_t *ipst) 58387c478bd9Sstevel@tonic-gate { 58397c478bd9Sstevel@tonic-gate clock_t delta; 58407c478bd9Sstevel@tonic-gate ire_t *best_fire = NULL; 58417c478bd9Sstevel@tonic-gate ire_t *best_cire = NULL; 58427c478bd9Sstevel@tonic-gate ire_t *first_fire; 58437c478bd9Sstevel@tonic-gate ire_t *first_cire; 58447c478bd9Sstevel@tonic-gate ire_t *fire; 58457c478bd9Sstevel@tonic-gate ire_t *cire; 58467c478bd9Sstevel@tonic-gate irb_t *firb = NULL; 58477c478bd9Sstevel@tonic-gate irb_t *cirb = NULL; 58487c478bd9Sstevel@tonic-gate ire_t *gw_ire; 58497c478bd9Sstevel@tonic-gate boolean_t already_resolved; 58507c478bd9Sstevel@tonic-gate boolean_t res; 58517c478bd9Sstevel@tonic-gate ipaddr_t dst; 58527c478bd9Sstevel@tonic-gate ipaddr_t gw; 58537c478bd9Sstevel@tonic-gate 58547c478bd9Sstevel@tonic-gate ip2dbg(("ire_multirt_lookup: *ire_arg %p, *fire_arg %p, flags %04x\n", 58557c478bd9Sstevel@tonic-gate (void *)*ire_arg, (void *)*fire_arg, flags)); 58567c478bd9Sstevel@tonic-gate 58577c478bd9Sstevel@tonic-gate ASSERT(ire_arg != NULL); 58587c478bd9Sstevel@tonic-gate ASSERT(fire_arg != NULL); 58597c478bd9Sstevel@tonic-gate 58607c478bd9Sstevel@tonic-gate /* Not an IRE_HOST ire; give up. */ 58617c478bd9Sstevel@tonic-gate if ((*fire_arg == NULL) || ((*fire_arg)->ire_type != IRE_HOST)) { 58627c478bd9Sstevel@tonic-gate return (B_FALSE); 58637c478bd9Sstevel@tonic-gate } 58647c478bd9Sstevel@tonic-gate 58657c478bd9Sstevel@tonic-gate /* This is the first IRE_HOST ire for that destination. */ 58667c478bd9Sstevel@tonic-gate first_fire = *fire_arg; 58677c478bd9Sstevel@tonic-gate firb = first_fire->ire_bucket; 58687c478bd9Sstevel@tonic-gate ASSERT(firb != NULL); 58697c478bd9Sstevel@tonic-gate 58707c478bd9Sstevel@tonic-gate dst = first_fire->ire_addr; 58717c478bd9Sstevel@tonic-gate 58727c478bd9Sstevel@tonic-gate ip2dbg(("ire_multirt_lookup: dst %08x\n", ntohl(dst))); 58737c478bd9Sstevel@tonic-gate 58747c478bd9Sstevel@tonic-gate /* 58757c478bd9Sstevel@tonic-gate * Retrieve the first IRE_CACHE ire for that destination; 58767c478bd9Sstevel@tonic-gate * if we don't find one, no route for that dest is 58777c478bd9Sstevel@tonic-gate * resolved yet. 58787c478bd9Sstevel@tonic-gate */ 5879f4b3ec61Sdh155122 first_cire = ire_cache_lookup(dst, GLOBAL_ZONEID, tsl, ipst); 58807c478bd9Sstevel@tonic-gate if (first_cire != NULL) { 58817c478bd9Sstevel@tonic-gate cirb = first_cire->ire_bucket; 58827c478bd9Sstevel@tonic-gate } 58837c478bd9Sstevel@tonic-gate 58847c478bd9Sstevel@tonic-gate ip2dbg(("ire_multirt_lookup: first_cire %p\n", (void *)first_cire)); 58857c478bd9Sstevel@tonic-gate 58867c478bd9Sstevel@tonic-gate /* 58877c478bd9Sstevel@tonic-gate * Search for a resolvable route, giving the top priority 58887c478bd9Sstevel@tonic-gate * to routes that can be resolved without any call to the resolver. 58897c478bd9Sstevel@tonic-gate */ 58907c478bd9Sstevel@tonic-gate IRB_REFHOLD(firb); 58917c478bd9Sstevel@tonic-gate 58927c478bd9Sstevel@tonic-gate if (!CLASSD(dst)) { 58937c478bd9Sstevel@tonic-gate /* 58947c478bd9Sstevel@tonic-gate * For all multiroute IRE_HOST ires for that destination, 58957c478bd9Sstevel@tonic-gate * check if the route via the IRE_HOST's gateway is 58967c478bd9Sstevel@tonic-gate * resolved yet. 58977c478bd9Sstevel@tonic-gate */ 58987c478bd9Sstevel@tonic-gate for (fire = first_fire; fire != NULL; fire = fire->ire_next) { 58997c478bd9Sstevel@tonic-gate 59007c478bd9Sstevel@tonic-gate if (!(fire->ire_flags & RTF_MULTIRT)) 59017c478bd9Sstevel@tonic-gate continue; 59027c478bd9Sstevel@tonic-gate if (fire->ire_addr != dst) 59037c478bd9Sstevel@tonic-gate continue; 59047c478bd9Sstevel@tonic-gate 590545916cd2Sjpk if (fire->ire_gw_secattr != NULL && 590645916cd2Sjpk tsol_ire_match_gwattr(fire, tsl) != 0) { 590745916cd2Sjpk continue; 590845916cd2Sjpk } 590945916cd2Sjpk 59107c478bd9Sstevel@tonic-gate gw = fire->ire_gateway_addr; 59117c478bd9Sstevel@tonic-gate 59127c478bd9Sstevel@tonic-gate ip2dbg(("ire_multirt_lookup: fire %p, " 59137c478bd9Sstevel@tonic-gate "ire_addr %08x, ire_gateway_addr %08x\n", 59147c478bd9Sstevel@tonic-gate (void *)fire, ntohl(fire->ire_addr), ntohl(gw))); 59157c478bd9Sstevel@tonic-gate 59167c478bd9Sstevel@tonic-gate already_resolved = B_FALSE; 59177c478bd9Sstevel@tonic-gate 59187c478bd9Sstevel@tonic-gate if (first_cire != NULL) { 59197c478bd9Sstevel@tonic-gate ASSERT(cirb != NULL); 59207c478bd9Sstevel@tonic-gate 59217c478bd9Sstevel@tonic-gate IRB_REFHOLD(cirb); 59227c478bd9Sstevel@tonic-gate /* 59237c478bd9Sstevel@tonic-gate * For all IRE_CACHE ires for that 59247c478bd9Sstevel@tonic-gate * destination. 59257c478bd9Sstevel@tonic-gate */ 59267c478bd9Sstevel@tonic-gate for (cire = first_cire; 59277c478bd9Sstevel@tonic-gate cire != NULL; 59287c478bd9Sstevel@tonic-gate cire = cire->ire_next) { 59297c478bd9Sstevel@tonic-gate 59307c478bd9Sstevel@tonic-gate if (!(cire->ire_flags & RTF_MULTIRT)) 59317c478bd9Sstevel@tonic-gate continue; 59327c478bd9Sstevel@tonic-gate if (cire->ire_addr != dst) 59337c478bd9Sstevel@tonic-gate continue; 59347c478bd9Sstevel@tonic-gate if (cire->ire_marks & 59357c478bd9Sstevel@tonic-gate (IRE_MARK_CONDEMNED | 59367c478bd9Sstevel@tonic-gate IRE_MARK_HIDDEN)) 59377c478bd9Sstevel@tonic-gate continue; 593845916cd2Sjpk 593945916cd2Sjpk if (cire->ire_gw_secattr != NULL && 594045916cd2Sjpk tsol_ire_match_gwattr(cire, 594145916cd2Sjpk tsl) != 0) { 594245916cd2Sjpk continue; 594345916cd2Sjpk } 594445916cd2Sjpk 59457c478bd9Sstevel@tonic-gate /* 59467c478bd9Sstevel@tonic-gate * Check if the IRE_CACHE's gateway 59477c478bd9Sstevel@tonic-gate * matches the IRE_HOST's gateway. 59487c478bd9Sstevel@tonic-gate */ 59497c478bd9Sstevel@tonic-gate if (cire->ire_gateway_addr == gw) { 59507c478bd9Sstevel@tonic-gate already_resolved = B_TRUE; 59517c478bd9Sstevel@tonic-gate break; 59527c478bd9Sstevel@tonic-gate } 59537c478bd9Sstevel@tonic-gate } 59547c478bd9Sstevel@tonic-gate IRB_REFRELE(cirb); 59557c478bd9Sstevel@tonic-gate } 59567c478bd9Sstevel@tonic-gate 59577c478bd9Sstevel@tonic-gate /* 59587c478bd9Sstevel@tonic-gate * This route is already resolved; 59597c478bd9Sstevel@tonic-gate * proceed with next one. 59607c478bd9Sstevel@tonic-gate */ 59617c478bd9Sstevel@tonic-gate if (already_resolved) { 59627c478bd9Sstevel@tonic-gate ip2dbg(("ire_multirt_lookup: found cire %p, " 59637c478bd9Sstevel@tonic-gate "already resolved\n", (void *)cire)); 59647c478bd9Sstevel@tonic-gate continue; 59657c478bd9Sstevel@tonic-gate } 59667c478bd9Sstevel@tonic-gate 59677c478bd9Sstevel@tonic-gate /* 59687c478bd9Sstevel@tonic-gate * The route is unresolved; is it actually 59697c478bd9Sstevel@tonic-gate * resolvable, i.e. is there a cache or a resolver 59707c478bd9Sstevel@tonic-gate * for the gateway? 59717c478bd9Sstevel@tonic-gate */ 59727c478bd9Sstevel@tonic-gate gw_ire = ire_route_lookup(gw, 0, 0, 0, NULL, NULL, 597345916cd2Sjpk ALL_ZONES, tsl, 5974f4b3ec61Sdh155122 MATCH_IRE_RECURSIVE | MATCH_IRE_SECATTR, ipst); 59757c478bd9Sstevel@tonic-gate 59767c478bd9Sstevel@tonic-gate ip2dbg(("ire_multirt_lookup: looked up gw_ire %p\n", 59777c478bd9Sstevel@tonic-gate (void *)gw_ire)); 59787c478bd9Sstevel@tonic-gate 59797c478bd9Sstevel@tonic-gate /* 59807c478bd9Sstevel@tonic-gate * If gw_ire is typed IRE_CACHETABLE, 59817c478bd9Sstevel@tonic-gate * this route can be resolved without any call to the 59827c478bd9Sstevel@tonic-gate * resolver. If the MULTIRT_CACHEGW flag is set, 59837c478bd9Sstevel@tonic-gate * give the top priority to this ire and exit the 59847c478bd9Sstevel@tonic-gate * loop. 59857c478bd9Sstevel@tonic-gate * This is typically the case when an ARP reply 59867c478bd9Sstevel@tonic-gate * is processed through ip_wput_nondata(). 59877c478bd9Sstevel@tonic-gate */ 59887c478bd9Sstevel@tonic-gate if ((flags & MULTIRT_CACHEGW) && 59897c478bd9Sstevel@tonic-gate (gw_ire != NULL) && 59907c478bd9Sstevel@tonic-gate (gw_ire->ire_type & IRE_CACHETABLE)) { 5991c793af95Ssangeeta ASSERT(gw_ire->ire_nce == NULL || 5992c793af95Ssangeeta gw_ire->ire_nce->nce_state == ND_REACHABLE); 59937c478bd9Sstevel@tonic-gate /* 59947c478bd9Sstevel@tonic-gate * Release the resolver associated to the 59957c478bd9Sstevel@tonic-gate * previous candidate best ire, if any. 59967c478bd9Sstevel@tonic-gate */ 59977c478bd9Sstevel@tonic-gate if (best_cire != NULL) { 59987c478bd9Sstevel@tonic-gate ire_refrele(best_cire); 59997c478bd9Sstevel@tonic-gate ASSERT(best_fire != NULL); 60007c478bd9Sstevel@tonic-gate } 60017c478bd9Sstevel@tonic-gate 60027c478bd9Sstevel@tonic-gate best_fire = fire; 60037c478bd9Sstevel@tonic-gate best_cire = gw_ire; 60047c478bd9Sstevel@tonic-gate 60057c478bd9Sstevel@tonic-gate ip2dbg(("ire_multirt_lookup: found top prio " 60067c478bd9Sstevel@tonic-gate "best_fire %p, best_cire %p\n", 60077c478bd9Sstevel@tonic-gate (void *)best_fire, (void *)best_cire)); 60087c478bd9Sstevel@tonic-gate break; 60097c478bd9Sstevel@tonic-gate } 60107c478bd9Sstevel@tonic-gate 60117c478bd9Sstevel@tonic-gate /* 60127c478bd9Sstevel@tonic-gate * Compute the time elapsed since our preceding 60137c478bd9Sstevel@tonic-gate * attempt to resolve that route. 60147c478bd9Sstevel@tonic-gate * If the MULTIRT_USESTAMP flag is set, we take that 60157c478bd9Sstevel@tonic-gate * route into account only if this time interval 60167c478bd9Sstevel@tonic-gate * exceeds ip_multirt_resolution_interval; 60177c478bd9Sstevel@tonic-gate * this prevents us from attempting to resolve a 60187c478bd9Sstevel@tonic-gate * broken route upon each sending of a packet. 60197c478bd9Sstevel@tonic-gate */ 60207c478bd9Sstevel@tonic-gate delta = lbolt - fire->ire_last_used_time; 60217c478bd9Sstevel@tonic-gate delta = TICK_TO_MSEC(delta); 60227c478bd9Sstevel@tonic-gate 6023f4b3ec61Sdh155122 res = (boolean_t)((delta > 6024f4b3ec61Sdh155122 ipst->ips_ip_multirt_resolution_interval) || 60257c478bd9Sstevel@tonic-gate (!(flags & MULTIRT_USESTAMP))); 60267c478bd9Sstevel@tonic-gate 60277c478bd9Sstevel@tonic-gate ip2dbg(("ire_multirt_lookup: fire %p, delta %lu, " 60287c478bd9Sstevel@tonic-gate "res %d\n", 60297c478bd9Sstevel@tonic-gate (void *)fire, delta, res)); 60307c478bd9Sstevel@tonic-gate 60317c478bd9Sstevel@tonic-gate if (res) { 60327c478bd9Sstevel@tonic-gate /* 60337c478bd9Sstevel@tonic-gate * We are here if MULTIRT_USESTAMP flag is set 60347c478bd9Sstevel@tonic-gate * and the resolver for fire's gateway 60357c478bd9Sstevel@tonic-gate * has not been tried since 60367c478bd9Sstevel@tonic-gate * ip_multirt_resolution_interval, or if 60377c478bd9Sstevel@tonic-gate * MULTIRT_USESTAMP is not set but gw_ire did 60387c478bd9Sstevel@tonic-gate * not fill the conditions for MULTIRT_CACHEGW, 60397c478bd9Sstevel@tonic-gate * or if neither MULTIRT_USESTAMP nor 60407c478bd9Sstevel@tonic-gate * MULTIRT_CACHEGW are set. 60417c478bd9Sstevel@tonic-gate */ 60427c478bd9Sstevel@tonic-gate if (gw_ire != NULL) { 60437c478bd9Sstevel@tonic-gate if (best_fire == NULL) { 60447c478bd9Sstevel@tonic-gate ASSERT(best_cire == NULL); 60457c478bd9Sstevel@tonic-gate 60467c478bd9Sstevel@tonic-gate best_fire = fire; 60477c478bd9Sstevel@tonic-gate best_cire = gw_ire; 60487c478bd9Sstevel@tonic-gate 60497c478bd9Sstevel@tonic-gate ip2dbg(("ire_multirt_lookup:" 60507c478bd9Sstevel@tonic-gate "found candidate " 60517c478bd9Sstevel@tonic-gate "best_fire %p, " 60527c478bd9Sstevel@tonic-gate "best_cire %p\n", 60537c478bd9Sstevel@tonic-gate (void *)best_fire, 60547c478bd9Sstevel@tonic-gate (void *)best_cire)); 60557c478bd9Sstevel@tonic-gate 60567c478bd9Sstevel@tonic-gate /* 60577c478bd9Sstevel@tonic-gate * If MULTIRT_CACHEGW is not 60587c478bd9Sstevel@tonic-gate * set, we ignore the top 60597c478bd9Sstevel@tonic-gate * priority ires that can 60607c478bd9Sstevel@tonic-gate * be resolved without any 60617c478bd9Sstevel@tonic-gate * call to the resolver; 60627c478bd9Sstevel@tonic-gate * In that case, there is 60637c478bd9Sstevel@tonic-gate * actually no need 60647c478bd9Sstevel@tonic-gate * to continue the loop. 60657c478bd9Sstevel@tonic-gate */ 60667c478bd9Sstevel@tonic-gate if (!(flags & 60677c478bd9Sstevel@tonic-gate MULTIRT_CACHEGW)) { 60687c478bd9Sstevel@tonic-gate break; 60697c478bd9Sstevel@tonic-gate } 60707c478bd9Sstevel@tonic-gate continue; 60717c478bd9Sstevel@tonic-gate } 60727c478bd9Sstevel@tonic-gate } else { 60737c478bd9Sstevel@tonic-gate /* 60747c478bd9Sstevel@tonic-gate * No resolver for the gateway: the 60757c478bd9Sstevel@tonic-gate * route is not resolvable. 60767c478bd9Sstevel@tonic-gate * If the MULTIRT_SETSTAMP flag is 60777c478bd9Sstevel@tonic-gate * set, we stamp the IRE_HOST ire, 60787c478bd9Sstevel@tonic-gate * so we will not select it again 60797c478bd9Sstevel@tonic-gate * during this resolution interval. 60807c478bd9Sstevel@tonic-gate */ 60817c478bd9Sstevel@tonic-gate if (flags & MULTIRT_SETSTAMP) 60827c478bd9Sstevel@tonic-gate fire->ire_last_used_time = 60837c478bd9Sstevel@tonic-gate lbolt; 60847c478bd9Sstevel@tonic-gate } 60857c478bd9Sstevel@tonic-gate } 60867c478bd9Sstevel@tonic-gate 60877c478bd9Sstevel@tonic-gate if (gw_ire != NULL) 60887c478bd9Sstevel@tonic-gate ire_refrele(gw_ire); 60897c478bd9Sstevel@tonic-gate } 60907c478bd9Sstevel@tonic-gate } else { /* CLASSD(dst) */ 60917c478bd9Sstevel@tonic-gate 60927c478bd9Sstevel@tonic-gate for (fire = first_fire; 60937c478bd9Sstevel@tonic-gate fire != NULL; 60947c478bd9Sstevel@tonic-gate fire = fire->ire_next) { 60957c478bd9Sstevel@tonic-gate 60967c478bd9Sstevel@tonic-gate if (!(fire->ire_flags & RTF_MULTIRT)) 60977c478bd9Sstevel@tonic-gate continue; 60987c478bd9Sstevel@tonic-gate if (fire->ire_addr != dst) 60997c478bd9Sstevel@tonic-gate continue; 61007c478bd9Sstevel@tonic-gate 610145916cd2Sjpk if (fire->ire_gw_secattr != NULL && 610245916cd2Sjpk tsol_ire_match_gwattr(fire, tsl) != 0) { 610345916cd2Sjpk continue; 610445916cd2Sjpk } 610545916cd2Sjpk 61067c478bd9Sstevel@tonic-gate already_resolved = B_FALSE; 61077c478bd9Sstevel@tonic-gate 61087c478bd9Sstevel@tonic-gate gw = fire->ire_gateway_addr; 61097c478bd9Sstevel@tonic-gate 61107c478bd9Sstevel@tonic-gate gw_ire = ire_ftable_lookup(gw, 0, 0, IRE_INTERFACE, 611145916cd2Sjpk NULL, NULL, ALL_ZONES, 0, tsl, 611245916cd2Sjpk MATCH_IRE_RECURSIVE | MATCH_IRE_TYPE | 6113f4b3ec61Sdh155122 MATCH_IRE_SECATTR, ipst); 61147c478bd9Sstevel@tonic-gate 61157c478bd9Sstevel@tonic-gate /* No resolver for the gateway; we skip this ire. */ 61167c478bd9Sstevel@tonic-gate if (gw_ire == NULL) { 61177c478bd9Sstevel@tonic-gate continue; 61187c478bd9Sstevel@tonic-gate } 6119c793af95Ssangeeta ASSERT(gw_ire->ire_nce == NULL || 6120c793af95Ssangeeta gw_ire->ire_nce->nce_state == ND_REACHABLE); 61217c478bd9Sstevel@tonic-gate 61227c478bd9Sstevel@tonic-gate if (first_cire != NULL) { 61237c478bd9Sstevel@tonic-gate 61247c478bd9Sstevel@tonic-gate IRB_REFHOLD(cirb); 61257c478bd9Sstevel@tonic-gate /* 61267c478bd9Sstevel@tonic-gate * For all IRE_CACHE ires for that 61277c478bd9Sstevel@tonic-gate * destination. 61287c478bd9Sstevel@tonic-gate */ 61297c478bd9Sstevel@tonic-gate for (cire = first_cire; 61307c478bd9Sstevel@tonic-gate cire != NULL; 61317c478bd9Sstevel@tonic-gate cire = cire->ire_next) { 61327c478bd9Sstevel@tonic-gate 61337c478bd9Sstevel@tonic-gate if (!(cire->ire_flags & RTF_MULTIRT)) 61347c478bd9Sstevel@tonic-gate continue; 61357c478bd9Sstevel@tonic-gate if (cire->ire_addr != dst) 61367c478bd9Sstevel@tonic-gate continue; 61377c478bd9Sstevel@tonic-gate if (cire->ire_marks & 61387c478bd9Sstevel@tonic-gate (IRE_MARK_CONDEMNED | 61397c478bd9Sstevel@tonic-gate IRE_MARK_HIDDEN)) 61407c478bd9Sstevel@tonic-gate continue; 61417c478bd9Sstevel@tonic-gate 614245916cd2Sjpk if (cire->ire_gw_secattr != NULL && 614345916cd2Sjpk tsol_ire_match_gwattr(cire, 614445916cd2Sjpk tsl) != 0) { 614545916cd2Sjpk continue; 614645916cd2Sjpk } 614745916cd2Sjpk 61487c478bd9Sstevel@tonic-gate /* 61497c478bd9Sstevel@tonic-gate * Cache entries are linked to the 61507c478bd9Sstevel@tonic-gate * parent routes using the parent handle 61517c478bd9Sstevel@tonic-gate * (ire_phandle). If no cache entry has 61527c478bd9Sstevel@tonic-gate * the same handle as fire, fire is 61537c478bd9Sstevel@tonic-gate * still unresolved. 61547c478bd9Sstevel@tonic-gate */ 61557c478bd9Sstevel@tonic-gate ASSERT(cire->ire_phandle != 0); 61567c478bd9Sstevel@tonic-gate if (cire->ire_phandle == 61577c478bd9Sstevel@tonic-gate fire->ire_phandle) { 61587c478bd9Sstevel@tonic-gate already_resolved = B_TRUE; 61597c478bd9Sstevel@tonic-gate break; 61607c478bd9Sstevel@tonic-gate } 61617c478bd9Sstevel@tonic-gate } 61627c478bd9Sstevel@tonic-gate IRB_REFRELE(cirb); 61637c478bd9Sstevel@tonic-gate } 61647c478bd9Sstevel@tonic-gate 61657c478bd9Sstevel@tonic-gate /* 61667c478bd9Sstevel@tonic-gate * This route is already resolved; proceed with 61677c478bd9Sstevel@tonic-gate * next one. 61687c478bd9Sstevel@tonic-gate */ 61697c478bd9Sstevel@tonic-gate if (already_resolved) { 61707c478bd9Sstevel@tonic-gate ire_refrele(gw_ire); 61717c478bd9Sstevel@tonic-gate continue; 61727c478bd9Sstevel@tonic-gate } 61737c478bd9Sstevel@tonic-gate 61747c478bd9Sstevel@tonic-gate /* 61757c478bd9Sstevel@tonic-gate * Compute the time elapsed since our preceding 61767c478bd9Sstevel@tonic-gate * attempt to resolve that route. 61777c478bd9Sstevel@tonic-gate * If the MULTIRT_USESTAMP flag is set, we take 61787c478bd9Sstevel@tonic-gate * that route into account only if this time 61797c478bd9Sstevel@tonic-gate * interval exceeds ip_multirt_resolution_interval; 61807c478bd9Sstevel@tonic-gate * this prevents us from attempting to resolve a 61817c478bd9Sstevel@tonic-gate * broken route upon each sending of a packet. 61827c478bd9Sstevel@tonic-gate */ 61837c478bd9Sstevel@tonic-gate delta = lbolt - fire->ire_last_used_time; 61847c478bd9Sstevel@tonic-gate delta = TICK_TO_MSEC(delta); 61857c478bd9Sstevel@tonic-gate 6186f4b3ec61Sdh155122 res = (boolean_t)((delta > 6187f4b3ec61Sdh155122 ipst->ips_ip_multirt_resolution_interval) || 61887c478bd9Sstevel@tonic-gate (!(flags & MULTIRT_USESTAMP))); 61897c478bd9Sstevel@tonic-gate 61907c478bd9Sstevel@tonic-gate ip3dbg(("ire_multirt_lookup: fire %p, delta %lx, " 61917c478bd9Sstevel@tonic-gate "flags %04x, res %d\n", 61927c478bd9Sstevel@tonic-gate (void *)fire, delta, flags, res)); 61937c478bd9Sstevel@tonic-gate 61947c478bd9Sstevel@tonic-gate if (res) { 61957c478bd9Sstevel@tonic-gate if (best_cire != NULL) { 61967c478bd9Sstevel@tonic-gate /* 61977c478bd9Sstevel@tonic-gate * Release the resolver associated 61987c478bd9Sstevel@tonic-gate * to the preceding candidate best 61997c478bd9Sstevel@tonic-gate * ire, if any. 62007c478bd9Sstevel@tonic-gate */ 62017c478bd9Sstevel@tonic-gate ire_refrele(best_cire); 62027c478bd9Sstevel@tonic-gate ASSERT(best_fire != NULL); 62037c478bd9Sstevel@tonic-gate } 62047c478bd9Sstevel@tonic-gate best_fire = fire; 62057c478bd9Sstevel@tonic-gate best_cire = gw_ire; 62067c478bd9Sstevel@tonic-gate continue; 62077c478bd9Sstevel@tonic-gate } 62087c478bd9Sstevel@tonic-gate 62097c478bd9Sstevel@tonic-gate ire_refrele(gw_ire); 62107c478bd9Sstevel@tonic-gate } 62117c478bd9Sstevel@tonic-gate } 62127c478bd9Sstevel@tonic-gate 62137c478bd9Sstevel@tonic-gate if (best_fire != NULL) { 62147c478bd9Sstevel@tonic-gate IRE_REFHOLD(best_fire); 62157c478bd9Sstevel@tonic-gate } 62167c478bd9Sstevel@tonic-gate IRB_REFRELE(firb); 62177c478bd9Sstevel@tonic-gate 62187c478bd9Sstevel@tonic-gate /* Release the first IRE_CACHE we initially looked up, if any. */ 62197c478bd9Sstevel@tonic-gate if (first_cire != NULL) 62207c478bd9Sstevel@tonic-gate ire_refrele(first_cire); 62217c478bd9Sstevel@tonic-gate 62227c478bd9Sstevel@tonic-gate /* Found a resolvable route. */ 62237c478bd9Sstevel@tonic-gate if (best_fire != NULL) { 62247c478bd9Sstevel@tonic-gate ASSERT(best_cire != NULL); 62257c478bd9Sstevel@tonic-gate 62267c478bd9Sstevel@tonic-gate if (*fire_arg != NULL) 62277c478bd9Sstevel@tonic-gate ire_refrele(*fire_arg); 62287c478bd9Sstevel@tonic-gate if (*ire_arg != NULL) 62297c478bd9Sstevel@tonic-gate ire_refrele(*ire_arg); 62307c478bd9Sstevel@tonic-gate 62317c478bd9Sstevel@tonic-gate /* 62327c478bd9Sstevel@tonic-gate * Update the passed-in arguments with the 62337c478bd9Sstevel@tonic-gate * resolvable multirt route we found. 62347c478bd9Sstevel@tonic-gate */ 62357c478bd9Sstevel@tonic-gate *fire_arg = best_fire; 62367c478bd9Sstevel@tonic-gate *ire_arg = best_cire; 62377c478bd9Sstevel@tonic-gate 62387c478bd9Sstevel@tonic-gate ip2dbg(("ire_multirt_lookup: returning B_TRUE, " 62397c478bd9Sstevel@tonic-gate "*fire_arg %p, *ire_arg %p\n", 62407c478bd9Sstevel@tonic-gate (void *)best_fire, (void *)best_cire)); 62417c478bd9Sstevel@tonic-gate 62427c478bd9Sstevel@tonic-gate return (B_TRUE); 62437c478bd9Sstevel@tonic-gate } 62447c478bd9Sstevel@tonic-gate 62457c478bd9Sstevel@tonic-gate ASSERT(best_cire == NULL); 62467c478bd9Sstevel@tonic-gate 62477c478bd9Sstevel@tonic-gate ip2dbg(("ire_multirt_lookup: returning B_FALSE, *fire_arg %p, " 62487c478bd9Sstevel@tonic-gate "*ire_arg %p\n", 62497c478bd9Sstevel@tonic-gate (void *)*fire_arg, (void *)*ire_arg)); 62507c478bd9Sstevel@tonic-gate 62517c478bd9Sstevel@tonic-gate /* No resolvable route. */ 62527c478bd9Sstevel@tonic-gate return (B_FALSE); 62537c478bd9Sstevel@tonic-gate } 62547c478bd9Sstevel@tonic-gate 62557c478bd9Sstevel@tonic-gate /* 62567c478bd9Sstevel@tonic-gate * IRE iterator for inbound and loopback broadcast processing. 62577c478bd9Sstevel@tonic-gate * Given an IRE_BROADCAST ire, walk the ires with the same destination 62587c478bd9Sstevel@tonic-gate * address, but skip over the passed-in ire. Returns the next ire without 62597c478bd9Sstevel@tonic-gate * a hold - assumes that the caller holds a reference on the IRE bucket. 62607c478bd9Sstevel@tonic-gate */ 62617c478bd9Sstevel@tonic-gate ire_t * 62627c478bd9Sstevel@tonic-gate ire_get_next_bcast_ire(ire_t *curr, ire_t *ire) 62637c478bd9Sstevel@tonic-gate { 62647c478bd9Sstevel@tonic-gate ill_t *ill; 62657c478bd9Sstevel@tonic-gate 62667c478bd9Sstevel@tonic-gate if (curr == NULL) { 62677c478bd9Sstevel@tonic-gate for (curr = ire->ire_bucket->irb_ire; curr != NULL; 62687c478bd9Sstevel@tonic-gate curr = curr->ire_next) { 62697c478bd9Sstevel@tonic-gate if (curr->ire_addr == ire->ire_addr) 62707c478bd9Sstevel@tonic-gate break; 62717c478bd9Sstevel@tonic-gate } 62727c478bd9Sstevel@tonic-gate } else { 62737c478bd9Sstevel@tonic-gate curr = curr->ire_next; 62747c478bd9Sstevel@tonic-gate } 62757c478bd9Sstevel@tonic-gate ill = ire_to_ill(ire); 62767c478bd9Sstevel@tonic-gate for (; curr != NULL; curr = curr->ire_next) { 62777c478bd9Sstevel@tonic-gate if (curr->ire_addr != ire->ire_addr) { 62787c478bd9Sstevel@tonic-gate /* 62797c478bd9Sstevel@tonic-gate * All the IREs to a given destination are contiguous; 62807c478bd9Sstevel@tonic-gate * break out once the address doesn't match. 62817c478bd9Sstevel@tonic-gate */ 62827c478bd9Sstevel@tonic-gate break; 62837c478bd9Sstevel@tonic-gate } 62847c478bd9Sstevel@tonic-gate if (curr == ire) { 62857c478bd9Sstevel@tonic-gate /* skip over the passed-in ire */ 62867c478bd9Sstevel@tonic-gate continue; 62877c478bd9Sstevel@tonic-gate } 62887c478bd9Sstevel@tonic-gate if ((curr->ire_stq != NULL && ire->ire_stq == NULL) || 62897c478bd9Sstevel@tonic-gate (curr->ire_stq == NULL && ire->ire_stq != NULL)) { 62907c478bd9Sstevel@tonic-gate /* 62917c478bd9Sstevel@tonic-gate * If the passed-in ire is loopback, skip over 62927c478bd9Sstevel@tonic-gate * non-loopback ires and vice versa. 62937c478bd9Sstevel@tonic-gate */ 62947c478bd9Sstevel@tonic-gate continue; 62957c478bd9Sstevel@tonic-gate } 62967c478bd9Sstevel@tonic-gate if (ire_to_ill(curr) != ill) { 62977c478bd9Sstevel@tonic-gate /* skip over IREs going through a different interface */ 62987c478bd9Sstevel@tonic-gate continue; 62997c478bd9Sstevel@tonic-gate } 63007c478bd9Sstevel@tonic-gate if (curr->ire_marks & IRE_MARK_CONDEMNED) { 63017c478bd9Sstevel@tonic-gate /* skip over deleted IREs */ 63027c478bd9Sstevel@tonic-gate continue; 63037c478bd9Sstevel@tonic-gate } 63047c478bd9Sstevel@tonic-gate return (curr); 63057c478bd9Sstevel@tonic-gate } 63067c478bd9Sstevel@tonic-gate return (NULL); 63077c478bd9Sstevel@tonic-gate } 63087c478bd9Sstevel@tonic-gate 63097c478bd9Sstevel@tonic-gate #ifdef IRE_DEBUG 63107c478bd9Sstevel@tonic-gate th_trace_t * 63117c478bd9Sstevel@tonic-gate th_trace_ire_lookup(ire_t *ire) 63127c478bd9Sstevel@tonic-gate { 63137c478bd9Sstevel@tonic-gate int bucket_id; 63147c478bd9Sstevel@tonic-gate th_trace_t *th_trace; 63157c478bd9Sstevel@tonic-gate 63167c478bd9Sstevel@tonic-gate ASSERT(MUTEX_HELD(&ire->ire_lock)); 63177c478bd9Sstevel@tonic-gate 63187c478bd9Sstevel@tonic-gate bucket_id = IP_TR_HASH(curthread); 63197c478bd9Sstevel@tonic-gate ASSERT(bucket_id < IP_TR_HASH_MAX); 63207c478bd9Sstevel@tonic-gate 63217c478bd9Sstevel@tonic-gate for (th_trace = ire->ire_trace[bucket_id]; th_trace != NULL; 63227c478bd9Sstevel@tonic-gate th_trace = th_trace->th_next) { 63237c478bd9Sstevel@tonic-gate if (th_trace->th_id == curthread) 63247c478bd9Sstevel@tonic-gate return (th_trace); 63257c478bd9Sstevel@tonic-gate } 63267c478bd9Sstevel@tonic-gate return (NULL); 63277c478bd9Sstevel@tonic-gate } 63287c478bd9Sstevel@tonic-gate 63297c478bd9Sstevel@tonic-gate void 63307c478bd9Sstevel@tonic-gate ire_trace_ref(ire_t *ire) 63317c478bd9Sstevel@tonic-gate { 63327c478bd9Sstevel@tonic-gate int bucket_id; 63337c478bd9Sstevel@tonic-gate th_trace_t *th_trace; 63347c478bd9Sstevel@tonic-gate 63357c478bd9Sstevel@tonic-gate /* 63367c478bd9Sstevel@tonic-gate * Attempt to locate the trace buffer for the curthread. 63377c478bd9Sstevel@tonic-gate * If it does not exist, then allocate a new trace buffer 63387c478bd9Sstevel@tonic-gate * and link it in list of trace bufs for this ipif, at the head 63397c478bd9Sstevel@tonic-gate */ 63407c478bd9Sstevel@tonic-gate mutex_enter(&ire->ire_lock); 63417c478bd9Sstevel@tonic-gate if (ire->ire_trace_disable == B_TRUE) { 63427c478bd9Sstevel@tonic-gate mutex_exit(&ire->ire_lock); 63437c478bd9Sstevel@tonic-gate return; 63447c478bd9Sstevel@tonic-gate } 63457c478bd9Sstevel@tonic-gate th_trace = th_trace_ire_lookup(ire); 63467c478bd9Sstevel@tonic-gate if (th_trace == NULL) { 63477c478bd9Sstevel@tonic-gate bucket_id = IP_TR_HASH(curthread); 63487c478bd9Sstevel@tonic-gate th_trace = (th_trace_t *)kmem_zalloc(sizeof (th_trace_t), 63497c478bd9Sstevel@tonic-gate KM_NOSLEEP); 63507c478bd9Sstevel@tonic-gate if (th_trace == NULL) { 63517c478bd9Sstevel@tonic-gate ire->ire_trace_disable = B_TRUE; 63527c478bd9Sstevel@tonic-gate mutex_exit(&ire->ire_lock); 63537c478bd9Sstevel@tonic-gate ire_trace_inactive(ire); 63547c478bd9Sstevel@tonic-gate return; 63557c478bd9Sstevel@tonic-gate } 63567c478bd9Sstevel@tonic-gate 63577c478bd9Sstevel@tonic-gate th_trace->th_id = curthread; 63587c478bd9Sstevel@tonic-gate th_trace->th_next = ire->ire_trace[bucket_id]; 63597c478bd9Sstevel@tonic-gate th_trace->th_prev = &ire->ire_trace[bucket_id]; 63607c478bd9Sstevel@tonic-gate if (th_trace->th_next != NULL) 63617c478bd9Sstevel@tonic-gate th_trace->th_next->th_prev = &th_trace->th_next; 63627c478bd9Sstevel@tonic-gate ire->ire_trace[bucket_id] = th_trace; 63637c478bd9Sstevel@tonic-gate } 63647c478bd9Sstevel@tonic-gate ASSERT(th_trace->th_refcnt < TR_BUF_MAX - 1); 63657c478bd9Sstevel@tonic-gate th_trace->th_refcnt++; 63667c478bd9Sstevel@tonic-gate th_trace_rrecord(th_trace); 63677c478bd9Sstevel@tonic-gate mutex_exit(&ire->ire_lock); 63687c478bd9Sstevel@tonic-gate } 63697c478bd9Sstevel@tonic-gate 63707c478bd9Sstevel@tonic-gate void 63717c478bd9Sstevel@tonic-gate ire_trace_free(th_trace_t *th_trace) 63727c478bd9Sstevel@tonic-gate { 63737c478bd9Sstevel@tonic-gate /* unlink th_trace and free it */ 63747c478bd9Sstevel@tonic-gate *th_trace->th_prev = th_trace->th_next; 63757c478bd9Sstevel@tonic-gate if (th_trace->th_next != NULL) 63767c478bd9Sstevel@tonic-gate th_trace->th_next->th_prev = th_trace->th_prev; 63777c478bd9Sstevel@tonic-gate th_trace->th_next = NULL; 63787c478bd9Sstevel@tonic-gate th_trace->th_prev = NULL; 63797c478bd9Sstevel@tonic-gate kmem_free(th_trace, sizeof (th_trace_t)); 63807c478bd9Sstevel@tonic-gate } 63817c478bd9Sstevel@tonic-gate 63827c478bd9Sstevel@tonic-gate void 63837c478bd9Sstevel@tonic-gate ire_untrace_ref(ire_t *ire) 63847c478bd9Sstevel@tonic-gate { 63857c478bd9Sstevel@tonic-gate th_trace_t *th_trace; 63867c478bd9Sstevel@tonic-gate 63877c478bd9Sstevel@tonic-gate mutex_enter(&ire->ire_lock); 63887c478bd9Sstevel@tonic-gate 63897c478bd9Sstevel@tonic-gate if (ire->ire_trace_disable == B_TRUE) { 63907c478bd9Sstevel@tonic-gate mutex_exit(&ire->ire_lock); 63917c478bd9Sstevel@tonic-gate return; 63927c478bd9Sstevel@tonic-gate } 63937c478bd9Sstevel@tonic-gate 63947c478bd9Sstevel@tonic-gate th_trace = th_trace_ire_lookup(ire); 63957c478bd9Sstevel@tonic-gate ASSERT(th_trace != NULL && th_trace->th_refcnt > 0); 63967c478bd9Sstevel@tonic-gate th_trace_rrecord(th_trace); 63977c478bd9Sstevel@tonic-gate th_trace->th_refcnt--; 63987c478bd9Sstevel@tonic-gate 63997c478bd9Sstevel@tonic-gate if (th_trace->th_refcnt == 0) 64007c478bd9Sstevel@tonic-gate ire_trace_free(th_trace); 64017c478bd9Sstevel@tonic-gate 64027c478bd9Sstevel@tonic-gate mutex_exit(&ire->ire_lock); 64037c478bd9Sstevel@tonic-gate } 64047c478bd9Sstevel@tonic-gate 64057c478bd9Sstevel@tonic-gate static void 64067c478bd9Sstevel@tonic-gate ire_trace_inactive(ire_t *ire) 64077c478bd9Sstevel@tonic-gate { 64087c478bd9Sstevel@tonic-gate th_trace_t *th_trace; 64097c478bd9Sstevel@tonic-gate int i; 64107c478bd9Sstevel@tonic-gate 64117c478bd9Sstevel@tonic-gate mutex_enter(&ire->ire_lock); 64127c478bd9Sstevel@tonic-gate for (i = 0; i < IP_TR_HASH_MAX; i++) { 64137c478bd9Sstevel@tonic-gate while (ire->ire_trace[i] != NULL) { 64147c478bd9Sstevel@tonic-gate th_trace = ire->ire_trace[i]; 64157c478bd9Sstevel@tonic-gate 64167c478bd9Sstevel@tonic-gate /* unlink th_trace and free it */ 64177c478bd9Sstevel@tonic-gate ire->ire_trace[i] = th_trace->th_next; 64187c478bd9Sstevel@tonic-gate if (th_trace->th_next != NULL) 64197c478bd9Sstevel@tonic-gate th_trace->th_next->th_prev = 64207c478bd9Sstevel@tonic-gate &ire->ire_trace[i]; 64217c478bd9Sstevel@tonic-gate 64227c478bd9Sstevel@tonic-gate th_trace->th_next = NULL; 64237c478bd9Sstevel@tonic-gate th_trace->th_prev = NULL; 64247c478bd9Sstevel@tonic-gate kmem_free(th_trace, sizeof (th_trace_t)); 64257c478bd9Sstevel@tonic-gate } 64267c478bd9Sstevel@tonic-gate } 64277c478bd9Sstevel@tonic-gate 64287c478bd9Sstevel@tonic-gate mutex_exit(&ire->ire_lock); 64297c478bd9Sstevel@tonic-gate } 64307c478bd9Sstevel@tonic-gate 64317c478bd9Sstevel@tonic-gate /* ARGSUSED */ 64327c478bd9Sstevel@tonic-gate void 64337c478bd9Sstevel@tonic-gate ire_thread_exit(ire_t *ire, caddr_t arg) 64347c478bd9Sstevel@tonic-gate { 64357c478bd9Sstevel@tonic-gate th_trace_t *th_trace; 64367c478bd9Sstevel@tonic-gate 64377c478bd9Sstevel@tonic-gate mutex_enter(&ire->ire_lock); 64387c478bd9Sstevel@tonic-gate th_trace = th_trace_ire_lookup(ire); 64397c478bd9Sstevel@tonic-gate if (th_trace == NULL) { 64407c478bd9Sstevel@tonic-gate mutex_exit(&ire->ire_lock); 64417c478bd9Sstevel@tonic-gate return; 64427c478bd9Sstevel@tonic-gate } 64437c478bd9Sstevel@tonic-gate ASSERT(th_trace->th_refcnt == 0); 64447c478bd9Sstevel@tonic-gate 64457c478bd9Sstevel@tonic-gate ire_trace_free(th_trace); 64467c478bd9Sstevel@tonic-gate mutex_exit(&ire->ire_lock); 64477c478bd9Sstevel@tonic-gate } 64487c478bd9Sstevel@tonic-gate 64497c478bd9Sstevel@tonic-gate #endif 6450c793af95Ssangeeta 6451c793af95Ssangeeta /* 6452c793af95Ssangeeta * Generate a message chain with an arp request to resolve the in_ire. 6453c793af95Ssangeeta * It is assumed that in_ire itself is currently in the ire cache table, 6454c793af95Ssangeeta * so we create a fake_ire filled with enough information about ire_addr etc. 6455c793af95Ssangeeta * to retrieve in_ire when the DL_UNITDATA response from the resolver 6456c793af95Ssangeeta * comes back. The fake_ire itself is created by calling esballoc with 6457c793af95Ssangeeta * the fr_rtnp (free routine) set to ire_freemblk. This routine will be 6458c793af95Ssangeeta * invoked when the mblk containing fake_ire is freed. 6459c793af95Ssangeeta */ 6460c793af95Ssangeeta void 6461c793af95Ssangeeta ire_arpresolve(ire_t *in_ire, ill_t *dst_ill) 6462c793af95Ssangeeta { 6463c793af95Ssangeeta areq_t *areq; 6464c793af95Ssangeeta ipaddr_t *addrp; 6465*54da8755Ssowmini mblk_t *ire_mp, *areq_mp; 6466c793af95Ssangeeta ire_t *ire, *buf; 6467c793af95Ssangeeta size_t bufsize; 6468c793af95Ssangeeta frtn_t *frtnp; 6469c793af95Ssangeeta ill_t *ill; 6470f4b3ec61Sdh155122 ip_stack_t *ipst = dst_ill->ill_ipst; 6471c793af95Ssangeeta 6472c793af95Ssangeeta /* 6473c793af95Ssangeeta * Construct message chain for the resolver 6474c793af95Ssangeeta * of the form: 6475c793af95Ssangeeta * ARP_REQ_MBLK-->IRE_MBLK 6476c793af95Ssangeeta * 6477c793af95Ssangeeta * NOTE : If the response does not 6478c793af95Ssangeeta * come back, ARP frees the packet. For this reason, 6479c793af95Ssangeeta * we can't REFHOLD the bucket of save_ire to prevent 6480c793af95Ssangeeta * deletions. We may not be able to REFRELE the bucket 6481c793af95Ssangeeta * if the response never comes back. Thus, before 6482c793af95Ssangeeta * adding the ire, ire_add_v4 will make sure that the 6483c793af95Ssangeeta * interface route does not get deleted. This is the 6484c793af95Ssangeeta * only case unlike ip_newroute_v6, ip_newroute_ipif_v6 6485c793af95Ssangeeta * where we can always prevent deletions because of 6486c793af95Ssangeeta * the synchronous nature of adding IRES i.e 6487c793af95Ssangeeta * ire_add_then_send is called after creating the IRE. 6488c793af95Ssangeeta */ 6489c793af95Ssangeeta 6490c793af95Ssangeeta /* 6491c793af95Ssangeeta * We use esballoc to allocate the second part(the ire_t size mblk) 6492c793af95Ssangeeta * of the message chain depicted above. THis mblk will be freed 6493c793af95Ssangeeta * by arp when there is a timeout, and otherwise passed to IP 6494c793af95Ssangeeta * and IP will * free it after processing the ARP response. 6495c793af95Ssangeeta */ 6496c793af95Ssangeeta 6497c793af95Ssangeeta bufsize = sizeof (ire_t) + sizeof (frtn_t); 6498c793af95Ssangeeta buf = kmem_alloc(bufsize, KM_NOSLEEP); 6499c793af95Ssangeeta if (buf == NULL) { 6500c793af95Ssangeeta ip1dbg(("ire_arpresolver:alloc buffer failed\n ")); 6501c793af95Ssangeeta return; 6502c793af95Ssangeeta } 6503c793af95Ssangeeta frtnp = (frtn_t *)(buf + 1); 6504c793af95Ssangeeta frtnp->free_arg = (caddr_t)buf; 6505c793af95Ssangeeta frtnp->free_func = ire_freemblk; 6506c793af95Ssangeeta 6507c793af95Ssangeeta ire_mp = esballoc((unsigned char *)buf, bufsize, BPRI_MED, frtnp); 6508c793af95Ssangeeta 6509c793af95Ssangeeta if (ire_mp == NULL) { 6510c793af95Ssangeeta ip1dbg(("ire_arpresolve: esballoc failed\n")); 6511c793af95Ssangeeta kmem_free(buf, bufsize); 6512c793af95Ssangeeta return; 6513c793af95Ssangeeta } 6514c793af95Ssangeeta ASSERT(in_ire->ire_nce != NULL); 6515*54da8755Ssowmini areq_mp = copyb(dst_ill->ill_resolver_mp); 6516*54da8755Ssowmini if (areq_mp == NULL) { 6517c793af95Ssangeeta kmem_free(buf, bufsize); 6518c793af95Ssangeeta return; 6519c793af95Ssangeeta } 6520c793af95Ssangeeta 6521c793af95Ssangeeta ire_mp->b_datap->db_type = IRE_ARPRESOLVE_TYPE; 6522c793af95Ssangeeta ire = (ire_t *)buf; 6523c793af95Ssangeeta /* 6524c793af95Ssangeeta * keep enough info in the fake ire so that we can pull up 6525c793af95Ssangeeta * the incomplete ire (in_ire) after result comes back from 6526c793af95Ssangeeta * arp and make it complete. 6527c793af95Ssangeeta */ 6528c793af95Ssangeeta *ire = ire_null; 6529c793af95Ssangeeta ire->ire_u = in_ire->ire_u; 6530c793af95Ssangeeta ire->ire_ipif_seqid = in_ire->ire_ipif_seqid; 6531c793af95Ssangeeta ire->ire_ipif = in_ire->ire_ipif; 6532c793af95Ssangeeta ire->ire_stq = in_ire->ire_stq; 6533c793af95Ssangeeta ill = ire_to_ill(ire); 6534c793af95Ssangeeta ire->ire_stq_ifindex = ill->ill_phyint->phyint_ifindex; 6535c793af95Ssangeeta ire->ire_zoneid = in_ire->ire_zoneid; 6536f4b3ec61Sdh155122 ire->ire_ipst = ipst; 6537f4b3ec61Sdh155122 6538c793af95Ssangeeta /* 6539c793af95Ssangeeta * ire_freemblk will be called when ire_mp is freed, both for 6540c793af95Ssangeeta * successful and failed arp resolution. IRE_MARK_UNCACHED will be set 6541c793af95Ssangeeta * when the arp resolution failed. 6542c793af95Ssangeeta */ 6543c793af95Ssangeeta ire->ire_marks |= IRE_MARK_UNCACHED; 6544c793af95Ssangeeta ire->ire_mp = ire_mp; 6545c793af95Ssangeeta ire_mp->b_wptr = (uchar_t *)&ire[1]; 6546c793af95Ssangeeta ire_mp->b_cont = NULL; 6547*54da8755Ssowmini linkb(areq_mp, ire_mp); 6548c793af95Ssangeeta 6549c793af95Ssangeeta /* 6550c793af95Ssangeeta * Fill in the source and dest addrs for the resolver. 6551c793af95Ssangeeta * NOTE: this depends on memory layouts imposed by 6552c793af95Ssangeeta * ill_init(). 6553c793af95Ssangeeta */ 6554*54da8755Ssowmini areq = (areq_t *)areq_mp->b_rptr; 6555c793af95Ssangeeta addrp = (ipaddr_t *)((char *)areq + areq->areq_sender_addr_offset); 6556c793af95Ssangeeta *addrp = ire->ire_src_addr; 6557c793af95Ssangeeta 6558c793af95Ssangeeta addrp = (ipaddr_t *)((char *)areq + areq->areq_target_addr_offset); 6559c793af95Ssangeeta if (ire->ire_gateway_addr != INADDR_ANY) { 6560c793af95Ssangeeta *addrp = ire->ire_gateway_addr; 6561c793af95Ssangeeta } else { 6562c793af95Ssangeeta *addrp = ire->ire_addr; 6563c793af95Ssangeeta } 6564c793af95Ssangeeta 6565c793af95Ssangeeta /* Up to the resolver. */ 6566c793af95Ssangeeta if (canputnext(dst_ill->ill_rq)) { 6567*54da8755Ssowmini putnext(dst_ill->ill_rq, areq_mp); 6568c793af95Ssangeeta } else { 6569*54da8755Ssowmini freemsg(areq_mp); 6570c793af95Ssangeeta } 6571c793af95Ssangeeta } 6572c793af95Ssangeeta 6573c793af95Ssangeeta /* 6574c793af95Ssangeeta * Esballoc free function for AR_ENTRY_QUERY request to clean up any 6575c793af95Ssangeeta * unresolved ire_t and/or nce_t structures when ARP resolution fails. 6576c793af95Ssangeeta * 6577c793af95Ssangeeta * This function can be called by ARP via free routine for ire_mp or 6578c793af95Ssangeeta * by IPv4(both host and forwarding path) via ire_delete 6579c793af95Ssangeeta * in case ARP resolution fails. 6580c793af95Ssangeeta * NOTE: Since IP is MT, ARP can call into IP but not vice versa 6581c793af95Ssangeeta * (for IP to talk to ARP, it still has to send AR* messages). 6582c793af95Ssangeeta * 6583c793af95Ssangeeta * Note that the ARP/IP merge should replace the functioanlity by providing 6584c793af95Ssangeeta * direct function calls to clean up unresolved entries in ire/nce lists. 6585c793af95Ssangeeta */ 6586c793af95Ssangeeta void 6587c793af95Ssangeeta ire_freemblk(ire_t *ire_mp) 6588c793af95Ssangeeta { 6589c793af95Ssangeeta nce_t *nce = NULL; 6590c793af95Ssangeeta ill_t *ill; 6591f4b3ec61Sdh155122 ip_stack_t *ipst; 6592c793af95Ssangeeta 6593c793af95Ssangeeta ASSERT(ire_mp != NULL); 6594c793af95Ssangeeta 6595c793af95Ssangeeta if ((ire_mp->ire_addr == NULL) && (ire_mp->ire_gateway_addr == NULL)) { 6596c793af95Ssangeeta ip1dbg(("ire_freemblk(0x%p) ire_addr is NULL\n", 6597c793af95Ssangeeta (void *)ire_mp)); 6598c793af95Ssangeeta goto cleanup; 6599c793af95Ssangeeta } 6600c793af95Ssangeeta if ((ire_mp->ire_marks & IRE_MARK_UNCACHED) == 0) { 6601c793af95Ssangeeta goto cleanup; /* everything succeeded. just free and return */ 6602c793af95Ssangeeta } 6603c793af95Ssangeeta 6604c793af95Ssangeeta /* 6605c793af95Ssangeeta * the arp information corresponding to this ire_mp was not 6606c793af95Ssangeeta * transferred to a ire_cache entry. Need 6607c793af95Ssangeeta * to clean up incomplete ire's and nce, if necessary. 6608c793af95Ssangeeta */ 6609c793af95Ssangeeta ASSERT(ire_mp->ire_stq != NULL); 6610c793af95Ssangeeta ASSERT(ire_mp->ire_stq_ifindex != 0); 6611f4b3ec61Sdh155122 ASSERT(ire_mp->ire_ipst != NULL); 6612f4b3ec61Sdh155122 6613f4b3ec61Sdh155122 ipst = ire_mp->ire_ipst; 6614f4b3ec61Sdh155122 6615c793af95Ssangeeta /* 6616c793af95Ssangeeta * Get any nce's corresponding to this ire_mp. We first have to 6617c793af95Ssangeeta * make sure that the ill is still around. 6618c793af95Ssangeeta */ 6619f4b3ec61Sdh155122 ill = ill_lookup_on_ifindex(ire_mp->ire_stq_ifindex, 6620f4b3ec61Sdh155122 B_FALSE, NULL, NULL, NULL, NULL, ipst); 6621c793af95Ssangeeta if (ill == NULL || (ire_mp->ire_stq != ill->ill_wq) || 6622c793af95Ssangeeta (ill->ill_state_flags & ILL_CONDEMNED)) { 6623c793af95Ssangeeta /* 6624c793af95Ssangeeta * ill went away. no nce to clean up. 6625c793af95Ssangeeta * Note that the ill_state_flags could be set to 6626c793af95Ssangeeta * ILL_CONDEMNED after this point, but if we know 6627c793af95Ssangeeta * that it is CONDEMNED now, we just bail out quickly. 6628c793af95Ssangeeta */ 6629c793af95Ssangeeta if (ill != NULL) 6630c793af95Ssangeeta ill_refrele(ill); 6631c793af95Ssangeeta goto cleanup; 6632c793af95Ssangeeta } 6633c793af95Ssangeeta nce = ndp_lookup_v4(ill, 6634c793af95Ssangeeta ((ire_mp->ire_gateway_addr != INADDR_ANY) ? 6635c793af95Ssangeeta &ire_mp->ire_gateway_addr : &ire_mp->ire_addr), 6636c793af95Ssangeeta B_FALSE); 6637c793af95Ssangeeta ill_refrele(ill); 6638c793af95Ssangeeta 6639c793af95Ssangeeta if ((nce != NULL) && (nce->nce_state != ND_REACHABLE)) { 6640c793af95Ssangeeta /* 6641c793af95Ssangeeta * some incomplete nce was found. 6642c793af95Ssangeeta */ 6643c793af95Ssangeeta DTRACE_PROBE2(ire__freemblk__arp__resolv__fail, 6644c793af95Ssangeeta nce_t *, nce, ire_t *, ire_mp); 6645c793af95Ssangeeta /* 6646c793af95Ssangeeta * Send the icmp_unreachable messages for the queued mblks in 6647c793af95Ssangeeta * ire->ire_nce->nce_qd_mp, since ARP resolution failed 6648c793af95Ssangeeta * for this ire 6649c793af95Ssangeeta */ 6650c793af95Ssangeeta arp_resolv_failed(nce); 6651c793af95Ssangeeta /* 6652c793af95Ssangeeta * Delete the nce and clean up all ire's pointing at this nce 6653c793af95Ssangeeta * in the cachetable 6654c793af95Ssangeeta */ 6655c793af95Ssangeeta ndp_delete(nce); 6656c793af95Ssangeeta } 6657c793af95Ssangeeta if (nce != NULL) 6658c793af95Ssangeeta NCE_REFRELE(nce); /* release the ref taken by ndp_lookup_v4 */ 6659c793af95Ssangeeta 6660c793af95Ssangeeta cleanup: 6661c793af95Ssangeeta /* 6662c793af95Ssangeeta * Get rid of the ire buffer 6663c793af95Ssangeeta * We call kmem_free here(instead of ire_delete()), since 6664c793af95Ssangeeta * this is the freeb's callback. 6665c793af95Ssangeeta */ 6666c793af95Ssangeeta kmem_free(ire_mp, sizeof (ire_t) + sizeof (frtn_t)); 6667c793af95Ssangeeta } 6668c793af95Ssangeeta 6669c0861880Ssangeeta /* 6670*54da8755Ssowmini * find, or create if needed, a neighbor cache entry nce_t for IRE_CACHE and 6671*54da8755Ssowmini * non-loopback IRE_BROADCAST ire's. 6672*54da8755Ssowmini * 6673*54da8755Ssowmini * If a neighbor-cache entry has to be created (i.e., one does not already 6674*54da8755Ssowmini * exist in the nce list) the nce_res_mp and nce_state of the neighbor cache 6675*54da8755Ssowmini * entry are initialized in ndp_add_v4(). These values are picked from 6676*54da8755Ssowmini * the src_nce, if one is passed in. Otherwise (if src_nce == NULL) the 6677*54da8755Ssowmini * ire->ire_type and the outgoing interface (ire_to_ill(ire)) values 6678*54da8755Ssowmini * determine the {nce_state, nce_res_mp} of the nce_t created. All 6679*54da8755Ssowmini * IRE_BROADCAST entries have nce_state = ND_REACHABLE, and the nce_res_mp 6680*54da8755Ssowmini * is set to the ill_bcast_mp of the outgoing inerface. For unicast ire 6681*54da8755Ssowmini * entries, 6682*54da8755Ssowmini * - if the outgoing interface is of type IRE_IF_RESOLVER, a newly created 6683*54da8755Ssowmini * nce_t will have a null nce_res_mp, and will be in the ND_INITIAL state. 6684*54da8755Ssowmini * - if the outgoing interface is a IRE_IF_NORESOLVER interface, no link 6685*54da8755Ssowmini * layer resolution is necessary, so that the nce_t will be in the 6686*54da8755Ssowmini * ND_REACHABLE state and the nce_res_mp will have a copy of the 6687*54da8755Ssowmini * ill_resolver_mp of the outgoing interface. 6688*54da8755Ssowmini * 6689*54da8755Ssowmini * The link layer information needed for broadcast addresses, and for 6690*54da8755Ssowmini * packets sent on IRE_IF_NORESOLVER interfaces is a constant mapping that 6691*54da8755Ssowmini * never needs re-verification for the lifetime of the nce_t. These are 6692*54da8755Ssowmini * therefore marked NCE_F_PERMANENT, and never allowed to expire via 6693*54da8755Ssowmini * NCE_EXPIRED. 6694*54da8755Ssowmini * 6695*54da8755Ssowmini * IRE_CACHE ire's contain the information for the nexthop (ire_gateway_addr) 6696*54da8755Ssowmini * in the case of indirect routes, and for the dst itself (ire_addr) in the 6697c793af95Ssangeeta * case of direct routes, with the nce_res_mp containing a template 6698c793af95Ssangeeta * DL_UNITDATA request. 6699c793af95Ssangeeta * 6700c793af95Ssangeeta * The actual association of the ire_nce to the nce created here is 6701c793af95Ssangeeta * typically done in ire_add_v4 for IRE_CACHE entries. Exceptions 6702c793af95Ssangeeta * to this rule are SO_DONTROUTE ire's (IRE_MARK_NO_ADD), for which 6703c793af95Ssangeeta * the ire_nce assignment is done in ire_add_then_send, and mobile-ip 6704c793af95Ssangeeta * where the assignment is done in ire_add_mrtun(). 6705c793af95Ssangeeta */ 6706c793af95Ssangeeta int 6707*54da8755Ssowmini ire_nce_init(ire_t *ire, nce_t *src_nce) 6708c793af95Ssangeeta { 6709*54da8755Ssowmini in_addr_t addr4; 6710c793af95Ssangeeta int err; 6711*54da8755Ssowmini nce_t *nce = NULL; 6712c793af95Ssangeeta ill_t *ire_ill; 6713*54da8755Ssowmini uint16_t nce_flags = 0; 6714f4b3ec61Sdh155122 ip_stack_t *ipst; 6715c793af95Ssangeeta 6716*54da8755Ssowmini if (ire->ire_stq == NULL) 6717c793af95Ssangeeta return (0); /* no need to create nce for local/loopback */ 6718c793af95Ssangeeta 6719c793af95Ssangeeta switch (ire->ire_type) { 6720c793af95Ssangeeta case IRE_CACHE: 6721c793af95Ssangeeta if (ire->ire_gateway_addr != INADDR_ANY) 6722c793af95Ssangeeta addr4 = ire->ire_gateway_addr; /* 'G' route */ 6723c793af95Ssangeeta else 6724c793af95Ssangeeta addr4 = ire->ire_addr; /* direct route */ 6725c793af95Ssangeeta break; 6726c793af95Ssangeeta case IRE_BROADCAST: 6727c793af95Ssangeeta addr4 = ire->ire_addr; 6728*54da8755Ssowmini nce_flags |= (NCE_F_PERMANENT|NCE_F_BCAST); 6729c793af95Ssangeeta break; 6730c793af95Ssangeeta default: 6731c793af95Ssangeeta return (0); 6732c793af95Ssangeeta } 6733c793af95Ssangeeta 6734c793af95Ssangeeta /* 6735c793af95Ssangeeta * ire_ipif is picked based on RTF_SETSRC, usesrc etc. 6736c793af95Ssangeeta * rules in ire_forward_src_ipif. We want the dlureq_mp 6737c793af95Ssangeeta * for the outgoing interface, which we get from the ire_stq. 6738c793af95Ssangeeta */ 6739c793af95Ssangeeta ire_ill = ire_to_ill(ire); 6740f4b3ec61Sdh155122 ipst = ire_ill->ill_ipst; 6741c793af95Ssangeeta 6742c793af95Ssangeeta /* 6743*54da8755Ssowmini * IRE_IF_NORESOLVER entries never need re-verification and 6744*54da8755Ssowmini * do not expire, so we mark them as NCE_F_PERMANENT. 6745c793af95Ssangeeta */ 6746*54da8755Ssowmini if (ire_ill->ill_net_type == IRE_IF_NORESOLVER) 6747*54da8755Ssowmini nce_flags |= NCE_F_PERMANENT; 6748c793af95Ssangeeta 6749b9c344b3Ssowmini retry_nce: 6750*54da8755Ssowmini err = ndp_lookup_then_add_v4(ire_ill, &addr4, nce_flags, 6751*54da8755Ssowmini &nce, src_nce); 6752c793af95Ssangeeta 6753*54da8755Ssowmini if (err == EEXIST && NCE_EXPIRED(nce, ipst)) { 6754b9c344b3Ssowmini /* 6755b9c344b3Ssowmini * We looked up an expired nce. 6756b9c344b3Ssowmini * Go back and try to create one again. 6757b9c344b3Ssowmini */ 6758*54da8755Ssowmini ndp_delete(nce); 6759*54da8755Ssowmini NCE_REFRELE(nce); 6760*54da8755Ssowmini nce = NULL; 6761b9c344b3Ssowmini goto retry_nce; 6762b9c344b3Ssowmini } 6763b9c344b3Ssowmini 6764*54da8755Ssowmini ip1dbg(("ire 0x%p addr 0x%lx type 0x%x; found nce 0x%p err %d\n", 6765*54da8755Ssowmini (void *)ire, (ulong_t)addr4, ire->ire_type, (void *)nce, err)); 6766c793af95Ssangeeta 6767c793af95Ssangeeta switch (err) { 6768c793af95Ssangeeta case 0: 6769c793af95Ssangeeta case EEXIST: 6770c793af95Ssangeeta /* 6771*54da8755Ssowmini * return a pointer to a newly created or existing nce_t; 6772c793af95Ssangeeta * note that the ire-nce mapping is many-one, i.e., 6773*54da8755Ssowmini * multiple ire's could point to the same nce_t. 6774c793af95Ssangeeta */ 6775c793af95Ssangeeta break; 6776c793af95Ssangeeta default: 6777c793af95Ssangeeta DTRACE_PROBE2(nce__init__fail, ill_t *, ire_ill, int, err); 6778c793af95Ssangeeta return (EINVAL); 6779c793af95Ssangeeta } 6780c793af95Ssangeeta if (ire->ire_type == IRE_BROADCAST) { 6781c793af95Ssangeeta /* 6782c793af95Ssangeeta * Two bcast ires are created for each interface; 6783c793af95Ssangeeta * 1. loopback copy (which does not have an 6784c793af95Ssangeeta * ire_stq, and therefore has no ire_nce), and, 6785c793af95Ssangeeta * 2. the non-loopback copy, which has the nce_res_mp 6786c793af95Ssangeeta * initialized to a copy of the ill_bcast_mp, and 6787c793af95Ssangeeta * is marked as ND_REACHABLE at this point. 6788c793af95Ssangeeta * This nce does not undergo any further state changes, 6789c793af95Ssangeeta * and exists as long as the interface is plumbed. 6790c793af95Ssangeeta * Note: we do the ire_nce assignment here for IRE_BROADCAST 6791c793af95Ssangeeta * because some functions like ill_mark_bcast() inline the 6792*54da8755Ssowmini * ire_add functionality. 6793c793af95Ssangeeta */ 6794*54da8755Ssowmini ire->ire_nce = nce; 6795c793af95Ssangeeta /* 6796c793af95Ssangeeta * We are associating this nce to the ire, 6797c793af95Ssangeeta * so change the nce ref taken in 6798c793af95Ssangeeta * ndp_lookup_then_add_v4() from 6799c793af95Ssangeeta * NCE_REFHOLD to NCE_REFHOLD_NOTR 6800c793af95Ssangeeta */ 6801c793af95Ssangeeta NCE_REFHOLD_TO_REFHOLD_NOTR(ire->ire_nce); 6802c793af95Ssangeeta } else { 6803c793af95Ssangeeta /* 6804c793af95Ssangeeta * We are not using this nce_t just yet so release 6805c793af95Ssangeeta * the ref taken in ndp_lookup_then_add_v4() 6806c793af95Ssangeeta */ 6807*54da8755Ssowmini NCE_REFRELE(nce); 6808c793af95Ssangeeta } 6809c793af95Ssangeeta return (0); 6810c793af95Ssangeeta } 6811