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 /* 22*f4b3ec61Sdh * 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 * Internet Group Management Protocol (IGMP) routines. 317c478bd9Sstevel@tonic-gate * Multicast Listener Discovery Protocol (MLD) routines. 327c478bd9Sstevel@tonic-gate * 337c478bd9Sstevel@tonic-gate * Written by Steve Deering, Stanford, May 1988. 347c478bd9Sstevel@tonic-gate * Modified by Rosen Sharma, Stanford, Aug 1994. 357c478bd9Sstevel@tonic-gate * Modified by Bill Fenner, Xerox PARC, Feb. 1995. 367c478bd9Sstevel@tonic-gate * 377c478bd9Sstevel@tonic-gate * MULTICAST 3.5.1.1 387c478bd9Sstevel@tonic-gate */ 397c478bd9Sstevel@tonic-gate 407c478bd9Sstevel@tonic-gate #include <sys/types.h> 417c478bd9Sstevel@tonic-gate #include <sys/stream.h> 427c478bd9Sstevel@tonic-gate #include <sys/stropts.h> 437c478bd9Sstevel@tonic-gate #include <sys/strlog.h> 447c478bd9Sstevel@tonic-gate #include <sys/strsun.h> 457c478bd9Sstevel@tonic-gate #include <sys/systm.h> 467c478bd9Sstevel@tonic-gate #include <sys/ddi.h> 477c478bd9Sstevel@tonic-gate #include <sys/sunddi.h> 487c478bd9Sstevel@tonic-gate #include <sys/cmn_err.h> 497c478bd9Sstevel@tonic-gate #include <sys/atomic.h> 507c478bd9Sstevel@tonic-gate #include <sys/zone.h> 517c478bd9Sstevel@tonic-gate 527c478bd9Sstevel@tonic-gate #include <sys/param.h> 537c478bd9Sstevel@tonic-gate #include <sys/socket.h> 547c478bd9Sstevel@tonic-gate #include <inet/ipclassifier.h> 557c478bd9Sstevel@tonic-gate #include <net/if.h> 567c478bd9Sstevel@tonic-gate #include <net/route.h> 577c478bd9Sstevel@tonic-gate #include <netinet/in.h> 587c478bd9Sstevel@tonic-gate #include <netinet/igmp_var.h> 597c478bd9Sstevel@tonic-gate #include <netinet/ip6.h> 607c478bd9Sstevel@tonic-gate #include <netinet/icmp6.h> 617c478bd9Sstevel@tonic-gate 627c478bd9Sstevel@tonic-gate #include <inet/common.h> 637c478bd9Sstevel@tonic-gate #include <inet/mi.h> 647c478bd9Sstevel@tonic-gate #include <inet/nd.h> 657c478bd9Sstevel@tonic-gate #include <inet/ip.h> 667c478bd9Sstevel@tonic-gate #include <inet/ip6.h> 677c478bd9Sstevel@tonic-gate #include <inet/ip_multi.h> 687c478bd9Sstevel@tonic-gate #include <inet/ip_listutils.h> 697c478bd9Sstevel@tonic-gate 707c478bd9Sstevel@tonic-gate #include <netinet/igmp.h> 717c478bd9Sstevel@tonic-gate #include <inet/ip_if.h> 727c478bd9Sstevel@tonic-gate #include <net/pfkeyv2.h> 737c478bd9Sstevel@tonic-gate #include <inet/ipsec_info.h> 747c478bd9Sstevel@tonic-gate 757c478bd9Sstevel@tonic-gate static uint_t igmp_query_in(ipha_t *ipha, igmpa_t *igmpa, ill_t *ill); 767c478bd9Sstevel@tonic-gate static uint_t igmpv3_query_in(igmp3qa_t *igmp3qa, ill_t *ill, int igmplen); 777c478bd9Sstevel@tonic-gate static uint_t mld_query_in(mld_hdr_t *mldh, ill_t *ill); 787c478bd9Sstevel@tonic-gate static uint_t mldv2_query_in(mld2q_t *mld2q, ill_t *ill, int mldlen); 797c478bd9Sstevel@tonic-gate static void igmp_sendpkt(ilm_t *ilm, uchar_t type, ipaddr_t addr); 807c478bd9Sstevel@tonic-gate static void mld_sendpkt(ilm_t *ilm, uchar_t type, const in6_addr_t *v6addr); 817c478bd9Sstevel@tonic-gate static void igmpv3_sendrpt(ipif_t *ipif, mrec_t *reclist); 827c478bd9Sstevel@tonic-gate static void mldv2_sendrpt(ill_t *ill, mrec_t *reclist); 837c478bd9Sstevel@tonic-gate static mrec_t *mcast_bldmrec(mcast_record_t type, in6_addr_t *grp, 847c478bd9Sstevel@tonic-gate slist_t *srclist, mrec_t *next); 857c478bd9Sstevel@tonic-gate static void mcast_init_rtx(ill_t *ill, rtx_state_t *rtxp, 867c478bd9Sstevel@tonic-gate mcast_record_t rtype, slist_t *flist); 877c478bd9Sstevel@tonic-gate static mrec_t *mcast_merge_rtx(ilm_t *ilm, mrec_t *rp, slist_t *flist); 887c478bd9Sstevel@tonic-gate 897c478bd9Sstevel@tonic-gate 907c478bd9Sstevel@tonic-gate /* 917c478bd9Sstevel@tonic-gate * Macros used to do timer len conversions. Timer values are always 927c478bd9Sstevel@tonic-gate * stored and passed to the timer functions as milliseconds; but the 937c478bd9Sstevel@tonic-gate * default values and values from the wire may not be. 947c478bd9Sstevel@tonic-gate * 957c478bd9Sstevel@tonic-gate * And yes, it's obscure, but decisecond is easier to abbreviate than 967c478bd9Sstevel@tonic-gate * "tenths of a second". 977c478bd9Sstevel@tonic-gate */ 987c478bd9Sstevel@tonic-gate #define DSEC_TO_MSEC(dsec) ((dsec) * 100) 997c478bd9Sstevel@tonic-gate #define SEC_TO_MSEC(sec) ((sec) * 1000) 1007c478bd9Sstevel@tonic-gate 1017c478bd9Sstevel@tonic-gate /* 1027c478bd9Sstevel@tonic-gate * The first multicast join will trigger the igmp timers / mld timers 1037c478bd9Sstevel@tonic-gate * The unit for next is milliseconds. 1047c478bd9Sstevel@tonic-gate */ 1057c478bd9Sstevel@tonic-gate void 106*f4b3ec61Sdh igmp_start_timers(unsigned next, ip_stack_t *ipst) 1077c478bd9Sstevel@tonic-gate { 1087c478bd9Sstevel@tonic-gate int time_left; 1097c478bd9Sstevel@tonic-gate int ret; 1107c478bd9Sstevel@tonic-gate 1117c478bd9Sstevel@tonic-gate ASSERT(next != 0 && next != INFINITY); 1127c478bd9Sstevel@tonic-gate 113*f4b3ec61Sdh mutex_enter(&ipst->ips_igmp_timer_lock); 1147c478bd9Sstevel@tonic-gate 115*f4b3ec61Sdh if (ipst->ips_igmp_timer_setter_active) { 1167c478bd9Sstevel@tonic-gate /* 1177c478bd9Sstevel@tonic-gate * Serialize timer setters, one at a time. If the 1187c478bd9Sstevel@tonic-gate * timer is currently being set by someone, 1197c478bd9Sstevel@tonic-gate * just record the next time when it has to be 1207c478bd9Sstevel@tonic-gate * invoked and return. The current setter will 1217c478bd9Sstevel@tonic-gate * take care. 1227c478bd9Sstevel@tonic-gate */ 123*f4b3ec61Sdh ipst->ips_igmp_time_to_next = 124*f4b3ec61Sdh MIN(ipst->ips_igmp_time_to_next, next); 125*f4b3ec61Sdh mutex_exit(&ipst->ips_igmp_timer_lock); 1267c478bd9Sstevel@tonic-gate return; 1277c478bd9Sstevel@tonic-gate } else { 128*f4b3ec61Sdh ipst->ips_igmp_timer_setter_active = B_TRUE; 1297c478bd9Sstevel@tonic-gate } 130*f4b3ec61Sdh if (ipst->ips_igmp_timeout_id == 0) { 1317c478bd9Sstevel@tonic-gate /* 1327c478bd9Sstevel@tonic-gate * The timer is inactive. We need to start a timer 1337c478bd9Sstevel@tonic-gate */ 134*f4b3ec61Sdh ipst->ips_igmp_time_to_next = next; 135*f4b3ec61Sdh ipst->ips_igmp_timeout_id = timeout(igmp_timeout_handler, 136*f4b3ec61Sdh (void *)ipst, MSEC_TO_TICK(ipst->ips_igmp_time_to_next)); 137*f4b3ec61Sdh ipst->ips_igmp_timer_setter_active = B_FALSE; 138*f4b3ec61Sdh mutex_exit(&ipst->ips_igmp_timer_lock); 1397c478bd9Sstevel@tonic-gate return; 1407c478bd9Sstevel@tonic-gate } 1417c478bd9Sstevel@tonic-gate 1427c478bd9Sstevel@tonic-gate /* 1437c478bd9Sstevel@tonic-gate * The timer was scheduled sometime back for firing in 1447c478bd9Sstevel@tonic-gate * 'igmp_time_to_next' ms and is active. We need to 1457c478bd9Sstevel@tonic-gate * reschedule the timeout if the new 'next' will happen 1467c478bd9Sstevel@tonic-gate * earlier than the currently scheduled timeout 1477c478bd9Sstevel@tonic-gate */ 148*f4b3ec61Sdh time_left = ipst->ips_igmp_timer_fired_last + 149*f4b3ec61Sdh MSEC_TO_TICK(ipst->ips_igmp_time_to_next) - ddi_get_lbolt(); 1507c478bd9Sstevel@tonic-gate if (time_left < MSEC_TO_TICK(next)) { 151*f4b3ec61Sdh ipst->ips_igmp_timer_setter_active = B_FALSE; 152*f4b3ec61Sdh mutex_exit(&ipst->ips_igmp_timer_lock); 1537c478bd9Sstevel@tonic-gate return; 1547c478bd9Sstevel@tonic-gate } 1557c478bd9Sstevel@tonic-gate 156*f4b3ec61Sdh mutex_exit(&ipst->ips_igmp_timer_lock); 157*f4b3ec61Sdh ret = untimeout(ipst->ips_igmp_timeout_id); 158*f4b3ec61Sdh mutex_enter(&ipst->ips_igmp_timer_lock); 1597c478bd9Sstevel@tonic-gate /* 1607c478bd9Sstevel@tonic-gate * The timeout was cancelled, or the timeout handler 1617c478bd9Sstevel@tonic-gate * completed, while we were blocked in the untimeout. 1627c478bd9Sstevel@tonic-gate * No other thread could have set the timer meanwhile 1637c478bd9Sstevel@tonic-gate * since we serialized all the timer setters. Thus 1647c478bd9Sstevel@tonic-gate * no timer is currently active nor executing nor will 1657c478bd9Sstevel@tonic-gate * any timer fire in the future. We start the timer now 1667c478bd9Sstevel@tonic-gate * if needed. 1677c478bd9Sstevel@tonic-gate */ 1687c478bd9Sstevel@tonic-gate if (ret == -1) { 169*f4b3ec61Sdh ASSERT(ipst->ips_igmp_timeout_id == 0); 1707c478bd9Sstevel@tonic-gate } else { 171*f4b3ec61Sdh ASSERT(ipst->ips_igmp_timeout_id != 0); 172*f4b3ec61Sdh ipst->ips_igmp_timeout_id = 0; 1737c478bd9Sstevel@tonic-gate } 174*f4b3ec61Sdh if (ipst->ips_igmp_time_to_next != 0) { 175*f4b3ec61Sdh ipst->ips_igmp_time_to_next = 176*f4b3ec61Sdh MIN(ipst->ips_igmp_time_to_next, next); 177*f4b3ec61Sdh ipst->ips_igmp_timeout_id = timeout(igmp_timeout_handler, 178*f4b3ec61Sdh (void *)ipst, MSEC_TO_TICK(ipst->ips_igmp_time_to_next)); 1797c478bd9Sstevel@tonic-gate } 180*f4b3ec61Sdh ipst->ips_igmp_timer_setter_active = B_FALSE; 181*f4b3ec61Sdh mutex_exit(&ipst->ips_igmp_timer_lock); 1827c478bd9Sstevel@tonic-gate } 1837c478bd9Sstevel@tonic-gate 1847c478bd9Sstevel@tonic-gate /* 1857c478bd9Sstevel@tonic-gate * mld_start_timers: 1867c478bd9Sstevel@tonic-gate * The unit for next is milliseconds. 1877c478bd9Sstevel@tonic-gate */ 1887c478bd9Sstevel@tonic-gate void 189*f4b3ec61Sdh mld_start_timers(unsigned next, ip_stack_t *ipst) 1907c478bd9Sstevel@tonic-gate { 1917c478bd9Sstevel@tonic-gate int time_left; 1927c478bd9Sstevel@tonic-gate int ret; 1937c478bd9Sstevel@tonic-gate 1947c478bd9Sstevel@tonic-gate ASSERT(next != 0 && next != INFINITY); 1957c478bd9Sstevel@tonic-gate 196*f4b3ec61Sdh mutex_enter(&ipst->ips_mld_timer_lock); 197*f4b3ec61Sdh if (ipst->ips_mld_timer_setter_active) { 1987c478bd9Sstevel@tonic-gate /* 1997c478bd9Sstevel@tonic-gate * Serialize timer setters, one at a time. If the 2007c478bd9Sstevel@tonic-gate * timer is currently being set by someone, 2017c478bd9Sstevel@tonic-gate * just record the next time when it has to be 2027c478bd9Sstevel@tonic-gate * invoked and return. The current setter will 2037c478bd9Sstevel@tonic-gate * take care. 2047c478bd9Sstevel@tonic-gate */ 205*f4b3ec61Sdh ipst->ips_mld_time_to_next = 206*f4b3ec61Sdh MIN(ipst->ips_mld_time_to_next, next); 207*f4b3ec61Sdh mutex_exit(&ipst->ips_mld_timer_lock); 2087c478bd9Sstevel@tonic-gate return; 2097c478bd9Sstevel@tonic-gate } else { 210*f4b3ec61Sdh ipst->ips_mld_timer_setter_active = B_TRUE; 2117c478bd9Sstevel@tonic-gate } 212*f4b3ec61Sdh if (ipst->ips_mld_timeout_id == 0) { 2137c478bd9Sstevel@tonic-gate /* 2147c478bd9Sstevel@tonic-gate * The timer is inactive. We need to start a timer 2157c478bd9Sstevel@tonic-gate */ 216*f4b3ec61Sdh ipst->ips_mld_time_to_next = next; 217*f4b3ec61Sdh ipst->ips_mld_timeout_id = timeout(mld_timeout_handler, 218*f4b3ec61Sdh (void *)ipst, MSEC_TO_TICK(ipst->ips_mld_time_to_next)); 219*f4b3ec61Sdh ipst->ips_mld_timer_setter_active = B_FALSE; 220*f4b3ec61Sdh mutex_exit(&ipst->ips_mld_timer_lock); 2217c478bd9Sstevel@tonic-gate return; 2227c478bd9Sstevel@tonic-gate } 2237c478bd9Sstevel@tonic-gate 2247c478bd9Sstevel@tonic-gate /* 2257c478bd9Sstevel@tonic-gate * The timer was scheduled sometime back for firing in 2267c478bd9Sstevel@tonic-gate * 'igmp_time_to_next' ms and is active. We need to 2277c478bd9Sstevel@tonic-gate * reschedule the timeout if the new 'next' will happen 2287c478bd9Sstevel@tonic-gate * earlier than the currently scheduled timeout 2297c478bd9Sstevel@tonic-gate */ 230*f4b3ec61Sdh time_left = ipst->ips_mld_timer_fired_last + 231*f4b3ec61Sdh MSEC_TO_TICK(ipst->ips_mld_time_to_next) - ddi_get_lbolt(); 2327c478bd9Sstevel@tonic-gate if (time_left < MSEC_TO_TICK(next)) { 233*f4b3ec61Sdh ipst->ips_mld_timer_setter_active = B_FALSE; 234*f4b3ec61Sdh mutex_exit(&ipst->ips_mld_timer_lock); 2357c478bd9Sstevel@tonic-gate return; 2367c478bd9Sstevel@tonic-gate } 2377c478bd9Sstevel@tonic-gate 238*f4b3ec61Sdh mutex_exit(&ipst->ips_mld_timer_lock); 239*f4b3ec61Sdh ret = untimeout(ipst->ips_mld_timeout_id); 240*f4b3ec61Sdh mutex_enter(&ipst->ips_mld_timer_lock); 2417c478bd9Sstevel@tonic-gate /* 2427c478bd9Sstevel@tonic-gate * The timeout was cancelled, or the timeout handler 2437c478bd9Sstevel@tonic-gate * completed, while we were blocked in the untimeout. 2447c478bd9Sstevel@tonic-gate * No other thread could have set the timer meanwhile 2457c478bd9Sstevel@tonic-gate * since we serialized all the timer setters. Thus 2467c478bd9Sstevel@tonic-gate * no timer is currently active nor executing nor will 2477c478bd9Sstevel@tonic-gate * any timer fire in the future. We start the timer now 2487c478bd9Sstevel@tonic-gate * if needed. 2497c478bd9Sstevel@tonic-gate */ 2507c478bd9Sstevel@tonic-gate if (ret == -1) { 251*f4b3ec61Sdh ASSERT(ipst->ips_mld_timeout_id == 0); 2527c478bd9Sstevel@tonic-gate } else { 253*f4b3ec61Sdh ASSERT(ipst->ips_mld_timeout_id != 0); 254*f4b3ec61Sdh ipst->ips_mld_timeout_id = 0; 2557c478bd9Sstevel@tonic-gate } 256*f4b3ec61Sdh if (ipst->ips_mld_time_to_next != 0) { 257*f4b3ec61Sdh ipst->ips_mld_time_to_next = 258*f4b3ec61Sdh MIN(ipst->ips_mld_time_to_next, next); 259*f4b3ec61Sdh ipst->ips_mld_timeout_id = timeout(mld_timeout_handler, 260*f4b3ec61Sdh (void *)ipst, MSEC_TO_TICK(ipst->ips_mld_time_to_next)); 2617c478bd9Sstevel@tonic-gate } 262*f4b3ec61Sdh ipst->ips_mld_timer_setter_active = B_FALSE; 263*f4b3ec61Sdh mutex_exit(&ipst->ips_mld_timer_lock); 2647c478bd9Sstevel@tonic-gate } 2657c478bd9Sstevel@tonic-gate 2667c478bd9Sstevel@tonic-gate /* 2677c478bd9Sstevel@tonic-gate * igmp_input: 2686226e9d9Sethindra * Return NULL for a bad packet that is discarded here. 2696226e9d9Sethindra * Return mp if the message is OK and should be handed to "raw" receivers. 2707c478bd9Sstevel@tonic-gate * Callers of igmp_input() may need to reinitialize variables that were copied 2717c478bd9Sstevel@tonic-gate * from the mblk as this calls pullupmsg(). 2727c478bd9Sstevel@tonic-gate */ 2737c478bd9Sstevel@tonic-gate /* ARGSUSED */ 2746226e9d9Sethindra mblk_t * 2757c478bd9Sstevel@tonic-gate igmp_input(queue_t *q, mblk_t *mp, ill_t *ill) 2767c478bd9Sstevel@tonic-gate { 2777c478bd9Sstevel@tonic-gate igmpa_t *igmpa; 2787c478bd9Sstevel@tonic-gate ipha_t *ipha = (ipha_t *)(mp->b_rptr); 2797c478bd9Sstevel@tonic-gate int iphlen, igmplen, mblklen; 2807c478bd9Sstevel@tonic-gate ilm_t *ilm; 2817c478bd9Sstevel@tonic-gate uint32_t src, dst; 2827c478bd9Sstevel@tonic-gate uint32_t group; 2837c478bd9Sstevel@tonic-gate uint_t next; 2847c478bd9Sstevel@tonic-gate ipif_t *ipif; 285*f4b3ec61Sdh ip_stack_t *ipst; 2867c478bd9Sstevel@tonic-gate 2877c478bd9Sstevel@tonic-gate ASSERT(ill != NULL); 2887c478bd9Sstevel@tonic-gate ASSERT(!ill->ill_isv6); 289*f4b3ec61Sdh ipst = ill->ill_ipst; 290*f4b3ec61Sdh ++ipst->ips_igmpstat.igps_rcv_total; 2917c478bd9Sstevel@tonic-gate 2927c478bd9Sstevel@tonic-gate mblklen = MBLKL(mp); 2937c478bd9Sstevel@tonic-gate if (mblklen < 1 || mblklen < (iphlen = IPH_HDR_LENGTH(ipha))) { 294*f4b3ec61Sdh ++ipst->ips_igmpstat.igps_rcv_tooshort; 2956226e9d9Sethindra goto bad_pkt; 2967c478bd9Sstevel@tonic-gate } 2977c478bd9Sstevel@tonic-gate igmplen = ntohs(ipha->ipha_length) - iphlen; 2987c478bd9Sstevel@tonic-gate /* 2997c478bd9Sstevel@tonic-gate * Since msg sizes are more variable with v3, just pullup the 3007c478bd9Sstevel@tonic-gate * whole thing now. 3017c478bd9Sstevel@tonic-gate */ 3027c478bd9Sstevel@tonic-gate if (MBLKL(mp) < (igmplen + iphlen)) { 3037c478bd9Sstevel@tonic-gate mblk_t *mp1; 3047c478bd9Sstevel@tonic-gate if ((mp1 = msgpullup(mp, -1)) == NULL) { 305*f4b3ec61Sdh ++ipst->ips_igmpstat.igps_rcv_tooshort; 3066226e9d9Sethindra goto bad_pkt; 3077c478bd9Sstevel@tonic-gate } 3087c478bd9Sstevel@tonic-gate freemsg(mp); 3097c478bd9Sstevel@tonic-gate mp = mp1; 3107c478bd9Sstevel@tonic-gate ipha = (ipha_t *)(mp->b_rptr); 3117c478bd9Sstevel@tonic-gate } 3127c478bd9Sstevel@tonic-gate 3137c478bd9Sstevel@tonic-gate /* 3147c478bd9Sstevel@tonic-gate * Validate lengths 3157c478bd9Sstevel@tonic-gate */ 3167c478bd9Sstevel@tonic-gate if (igmplen < IGMP_MINLEN) { 317*f4b3ec61Sdh ++ipst->ips_igmpstat.igps_rcv_tooshort; 3186226e9d9Sethindra goto bad_pkt; 3197c478bd9Sstevel@tonic-gate } 3207c478bd9Sstevel@tonic-gate /* 3217c478bd9Sstevel@tonic-gate * Validate checksum 3227c478bd9Sstevel@tonic-gate */ 3237c478bd9Sstevel@tonic-gate if (IP_CSUM(mp, iphlen, 0)) { 324*f4b3ec61Sdh ++ipst->ips_igmpstat.igps_rcv_badsum; 3256226e9d9Sethindra goto bad_pkt; 3267c478bd9Sstevel@tonic-gate } 3277c478bd9Sstevel@tonic-gate 3287c478bd9Sstevel@tonic-gate igmpa = (igmpa_t *)(&mp->b_rptr[iphlen]); 3297c478bd9Sstevel@tonic-gate src = ipha->ipha_src; 3307c478bd9Sstevel@tonic-gate dst = ipha->ipha_dst; 3317c478bd9Sstevel@tonic-gate if (ip_debug > 1) 3327c478bd9Sstevel@tonic-gate (void) mi_strlog(ill->ill_rq, 1, SL_TRACE, 3337c478bd9Sstevel@tonic-gate "igmp_input: src 0x%x, dst 0x%x on %s\n", 3347c478bd9Sstevel@tonic-gate (int)ntohl(src), (int)ntohl(dst), 3357c478bd9Sstevel@tonic-gate ill->ill_name); 3367c478bd9Sstevel@tonic-gate 3377c478bd9Sstevel@tonic-gate switch (igmpa->igmpa_type) { 3387c478bd9Sstevel@tonic-gate case IGMP_MEMBERSHIP_QUERY: 3397c478bd9Sstevel@tonic-gate /* 3407c478bd9Sstevel@tonic-gate * packet length differentiates between v1/v2 and v3 3417c478bd9Sstevel@tonic-gate * v1/v2 should be exactly 8 octets long; v3 is >= 12 3427c478bd9Sstevel@tonic-gate */ 3437c478bd9Sstevel@tonic-gate if (igmplen == IGMP_MINLEN) { 3447c478bd9Sstevel@tonic-gate next = igmp_query_in(ipha, igmpa, ill); 3457c478bd9Sstevel@tonic-gate } else if (igmplen >= IGMP_V3_QUERY_MINLEN) { 3467c478bd9Sstevel@tonic-gate next = igmpv3_query_in((igmp3qa_t *)igmpa, ill, 3477c478bd9Sstevel@tonic-gate igmplen); 3487c478bd9Sstevel@tonic-gate } else { 349*f4b3ec61Sdh ++ipst->ips_igmpstat.igps_rcv_tooshort; 3506226e9d9Sethindra goto bad_pkt; 3517c478bd9Sstevel@tonic-gate } 3526226e9d9Sethindra if (next == 0) 3536226e9d9Sethindra goto bad_pkt; 3547c478bd9Sstevel@tonic-gate 3557c478bd9Sstevel@tonic-gate if (next != INFINITY) 356*f4b3ec61Sdh igmp_start_timers(next, ipst); 3577c478bd9Sstevel@tonic-gate 3587c478bd9Sstevel@tonic-gate break; 3597c478bd9Sstevel@tonic-gate 3607c478bd9Sstevel@tonic-gate case IGMP_V1_MEMBERSHIP_REPORT: 3617c478bd9Sstevel@tonic-gate case IGMP_V2_MEMBERSHIP_REPORT: 3627c478bd9Sstevel@tonic-gate /* 3637c478bd9Sstevel@tonic-gate * For fast leave to work, we have to know that we are the 3647c478bd9Sstevel@tonic-gate * last person to send a report for this group. Reports 3657c478bd9Sstevel@tonic-gate * generated by us are looped back since we could potentially 3667c478bd9Sstevel@tonic-gate * be a multicast router, so discard reports sourced by me. 3677c478bd9Sstevel@tonic-gate */ 3687c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 3697c478bd9Sstevel@tonic-gate for (ipif = ill->ill_ipif; ipif != NULL; 3707c478bd9Sstevel@tonic-gate ipif = ipif->ipif_next) { 3717c478bd9Sstevel@tonic-gate if (ipif->ipif_lcl_addr == src) { 3727c478bd9Sstevel@tonic-gate if (ip_debug > 1) { 3737c478bd9Sstevel@tonic-gate (void) mi_strlog(ill->ill_rq, 3747c478bd9Sstevel@tonic-gate 1, 3757c478bd9Sstevel@tonic-gate SL_TRACE, 3767c478bd9Sstevel@tonic-gate "igmp_input: we are only " 3777c478bd9Sstevel@tonic-gate "member src 0x%x ipif_local 0x%x", 3787c478bd9Sstevel@tonic-gate (int)ntohl(src), 3797c478bd9Sstevel@tonic-gate (int) 3807c478bd9Sstevel@tonic-gate ntohl(ipif->ipif_lcl_addr)); 3817c478bd9Sstevel@tonic-gate } 3827c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 3836226e9d9Sethindra return (mp); 3847c478bd9Sstevel@tonic-gate } 3857c478bd9Sstevel@tonic-gate } 3867c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 3877c478bd9Sstevel@tonic-gate 388*f4b3ec61Sdh ++ipst->ips_igmpstat.igps_rcv_reports; 3897c478bd9Sstevel@tonic-gate group = igmpa->igmpa_group; 3907c478bd9Sstevel@tonic-gate if (!CLASSD(group)) { 391*f4b3ec61Sdh ++ipst->ips_igmpstat.igps_rcv_badreports; 3926226e9d9Sethindra goto bad_pkt; 3937c478bd9Sstevel@tonic-gate } 3947c478bd9Sstevel@tonic-gate 3957c478bd9Sstevel@tonic-gate /* 3967c478bd9Sstevel@tonic-gate * KLUDGE: if the IP source address of the report has an 3977c478bd9Sstevel@tonic-gate * unspecified (i.e., zero) subnet number, as is allowed for 3987c478bd9Sstevel@tonic-gate * a booting host, replace it with the correct subnet number 3997c478bd9Sstevel@tonic-gate * so that a process-level multicast routing demon can 4007c478bd9Sstevel@tonic-gate * determine which subnet it arrived from. This is necessary 4017c478bd9Sstevel@tonic-gate * to compensate for the lack of any way for a process to 4027c478bd9Sstevel@tonic-gate * determine the arrival interface of an incoming packet. 4037c478bd9Sstevel@tonic-gate * 4047c478bd9Sstevel@tonic-gate * Requires that a copy of *this* message it passed up 4057c478bd9Sstevel@tonic-gate * to the raw interface which is done by our caller. 4067c478bd9Sstevel@tonic-gate */ 4077c478bd9Sstevel@tonic-gate if ((src & htonl(0xFF000000U)) == 0) { /* Minimum net mask */ 4087c478bd9Sstevel@tonic-gate /* Pick the first ipif on this ill */ 4097c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 4107c478bd9Sstevel@tonic-gate src = ill->ill_ipif->ipif_subnet; 4117c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 4127c478bd9Sstevel@tonic-gate ip1dbg(("igmp_input: changed src to 0x%x\n", 4137c478bd9Sstevel@tonic-gate (int)ntohl(src))); 4147c478bd9Sstevel@tonic-gate ipha->ipha_src = src; 4157c478bd9Sstevel@tonic-gate } 4167c478bd9Sstevel@tonic-gate 4177c478bd9Sstevel@tonic-gate /* 4187c478bd9Sstevel@tonic-gate * If we belong to the group being reported, and 4197c478bd9Sstevel@tonic-gate * we are a 'Delaying member' in the RFC terminology, 4207c478bd9Sstevel@tonic-gate * stop our timer for that group and 'clear flag' i.e. 4217c478bd9Sstevel@tonic-gate * mark as IGMP_OTHERMEMBER. Do this for all logical 4227c478bd9Sstevel@tonic-gate * interfaces on the given physical interface. 4237c478bd9Sstevel@tonic-gate */ 4247c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 4257c478bd9Sstevel@tonic-gate for (ipif = ill->ill_ipif; ipif != NULL; 4267c478bd9Sstevel@tonic-gate ipif = ipif->ipif_next) { 4277c478bd9Sstevel@tonic-gate ilm = ilm_lookup_ipif(ipif, group); 4287c478bd9Sstevel@tonic-gate if (ilm != NULL) { 429*f4b3ec61Sdh ++ipst->ips_igmpstat.igps_rcv_ourreports; 4307c478bd9Sstevel@tonic-gate ilm->ilm_timer = INFINITY; 4317c478bd9Sstevel@tonic-gate ilm->ilm_state = IGMP_OTHERMEMBER; 4327c478bd9Sstevel@tonic-gate } 4337c478bd9Sstevel@tonic-gate } /* for */ 4347c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 4357c478bd9Sstevel@tonic-gate break; 4367c478bd9Sstevel@tonic-gate 4377c478bd9Sstevel@tonic-gate case IGMP_V3_MEMBERSHIP_REPORT: 4387c478bd9Sstevel@tonic-gate /* 4397c478bd9Sstevel@tonic-gate * Currently nothing to do here; IGMP router is not 4407c478bd9Sstevel@tonic-gate * implemented in ip, and v3 hosts don't pay attention 4417c478bd9Sstevel@tonic-gate * to membership reports. 4427c478bd9Sstevel@tonic-gate */ 4437c478bd9Sstevel@tonic-gate break; 4447c478bd9Sstevel@tonic-gate } 4457c478bd9Sstevel@tonic-gate /* 4467c478bd9Sstevel@tonic-gate * Pass all valid IGMP packets up to any process(es) listening 4477c478bd9Sstevel@tonic-gate * on a raw IGMP socket. Do not free the packet. 4487c478bd9Sstevel@tonic-gate */ 4496226e9d9Sethindra return (mp); 4506226e9d9Sethindra 4516226e9d9Sethindra bad_pkt: 4526226e9d9Sethindra freemsg(mp); 4536226e9d9Sethindra return (NULL); 4547c478bd9Sstevel@tonic-gate } 4557c478bd9Sstevel@tonic-gate 4567c478bd9Sstevel@tonic-gate static uint_t 4577c478bd9Sstevel@tonic-gate igmp_query_in(ipha_t *ipha, igmpa_t *igmpa, ill_t *ill) 4587c478bd9Sstevel@tonic-gate { 4597c478bd9Sstevel@tonic-gate ilm_t *ilm; 4607c478bd9Sstevel@tonic-gate int timer; 4617c478bd9Sstevel@tonic-gate uint_t next; 462*f4b3ec61Sdh ip_stack_t *ipst; 4637c478bd9Sstevel@tonic-gate 464*f4b3ec61Sdh ipst = ill->ill_ipst; 465*f4b3ec61Sdh ++ipst->ips_igmpstat.igps_rcv_queries; 4667c478bd9Sstevel@tonic-gate 4677c478bd9Sstevel@tonic-gate /* 4687c478bd9Sstevel@tonic-gate * In the IGMPv2 specification, there are 3 states and a flag. 4697c478bd9Sstevel@tonic-gate * 4707c478bd9Sstevel@tonic-gate * In Non-Member state, we simply don't have a membership record. 4717c478bd9Sstevel@tonic-gate * In Delaying Member state, our timer is running (ilm->ilm_timer 4727c478bd9Sstevel@tonic-gate * < INFINITY). In Idle Member state, our timer is not running 4737c478bd9Sstevel@tonic-gate * (ilm->ilm_timer == INFINITY). 4747c478bd9Sstevel@tonic-gate * 4757c478bd9Sstevel@tonic-gate * The flag is ilm->ilm_state, it is set to IGMP_OTHERMEMBER if 4767c478bd9Sstevel@tonic-gate * we have heard a report from another member, or IGMP_IREPORTEDLAST 4777c478bd9Sstevel@tonic-gate * if I sent the last report. 4787c478bd9Sstevel@tonic-gate */ 4797c478bd9Sstevel@tonic-gate if (igmpa->igmpa_code == 0) { 4807c478bd9Sstevel@tonic-gate /* 4817c478bd9Sstevel@tonic-gate * Query from an old router. 4827c478bd9Sstevel@tonic-gate * Remember that the querier on this interface is old, 4837c478bd9Sstevel@tonic-gate * and set the timer to the value in RFC 1112. 4847c478bd9Sstevel@tonic-gate */ 4857c478bd9Sstevel@tonic-gate 4867c478bd9Sstevel@tonic-gate 4877c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 4887c478bd9Sstevel@tonic-gate ill->ill_mcast_v1_time = 0; 4897c478bd9Sstevel@tonic-gate ill->ill_mcast_v1_tset = 1; 4907c478bd9Sstevel@tonic-gate if (ill->ill_mcast_type != IGMP_V1_ROUTER) { 4917c478bd9Sstevel@tonic-gate ip1dbg(("Received IGMPv1 Query on %s, switching mode " 4927c478bd9Sstevel@tonic-gate "to IGMP_V1_ROUTER\n", ill->ill_name)); 4937c478bd9Sstevel@tonic-gate atomic_add_16(&ill->ill_ifptr->illif_mcast_v1, 1); 4947c478bd9Sstevel@tonic-gate ill->ill_mcast_type = IGMP_V1_ROUTER; 4957c478bd9Sstevel@tonic-gate } 4967c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 4977c478bd9Sstevel@tonic-gate 4987c478bd9Sstevel@tonic-gate timer = SEC_TO_MSEC(IGMP_MAX_HOST_REPORT_DELAY); 4997c478bd9Sstevel@tonic-gate 5007c478bd9Sstevel@tonic-gate if (ipha->ipha_dst != htonl(INADDR_ALLHOSTS_GROUP) || 5017c478bd9Sstevel@tonic-gate igmpa->igmpa_group != 0) { 502*f4b3ec61Sdh ++ipst->ips_igmpstat.igps_rcv_badqueries; 5037c478bd9Sstevel@tonic-gate return (0); 5047c478bd9Sstevel@tonic-gate } 5057c478bd9Sstevel@tonic-gate 5067c478bd9Sstevel@tonic-gate } else { 5077c478bd9Sstevel@tonic-gate in_addr_t group; 5087c478bd9Sstevel@tonic-gate 5097c478bd9Sstevel@tonic-gate /* 5107c478bd9Sstevel@tonic-gate * Query from a new router 5117c478bd9Sstevel@tonic-gate * Simply do a validity check 5127c478bd9Sstevel@tonic-gate */ 5137c478bd9Sstevel@tonic-gate group = igmpa->igmpa_group; 5147c478bd9Sstevel@tonic-gate if (group != 0 && (!CLASSD(group))) { 515*f4b3ec61Sdh ++ipst->ips_igmpstat.igps_rcv_badqueries; 5167c478bd9Sstevel@tonic-gate return (0); 5177c478bd9Sstevel@tonic-gate } 5187c478bd9Sstevel@tonic-gate 5197c478bd9Sstevel@tonic-gate /* 5207c478bd9Sstevel@tonic-gate * Switch interface state to v2 on receipt of a v2 query 5217c478bd9Sstevel@tonic-gate * ONLY IF current state is v3. Let things be if current 5227c478bd9Sstevel@tonic-gate * state if v1 but do reset the v2-querier-present timer. 5237c478bd9Sstevel@tonic-gate */ 5247c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 5257c478bd9Sstevel@tonic-gate if (ill->ill_mcast_type == IGMP_V3_ROUTER) { 5267c478bd9Sstevel@tonic-gate ip1dbg(("Received IGMPv2 Query on %s, switching mode " 5277c478bd9Sstevel@tonic-gate "to IGMP_V2_ROUTER", ill->ill_name)); 5287c478bd9Sstevel@tonic-gate atomic_add_16(&ill->ill_ifptr->illif_mcast_v2, 1); 5297c478bd9Sstevel@tonic-gate ill->ill_mcast_type = IGMP_V2_ROUTER; 5307c478bd9Sstevel@tonic-gate } 5317c478bd9Sstevel@tonic-gate ill->ill_mcast_v2_time = 0; 5327c478bd9Sstevel@tonic-gate ill->ill_mcast_v2_tset = 1; 5337c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 5347c478bd9Sstevel@tonic-gate 5357c478bd9Sstevel@tonic-gate timer = DSEC_TO_MSEC((int)igmpa->igmpa_code); 5367c478bd9Sstevel@tonic-gate } 5377c478bd9Sstevel@tonic-gate 5387c478bd9Sstevel@tonic-gate if (ip_debug > 1) { 5397c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 5407c478bd9Sstevel@tonic-gate (void) mi_strlog(ill->ill_rq, 1, SL_TRACE, 5417c478bd9Sstevel@tonic-gate "igmp_input: TIMER = igmp_code %d igmp_type 0x%x", 5427c478bd9Sstevel@tonic-gate (int)ntohs(igmpa->igmpa_code), 5437c478bd9Sstevel@tonic-gate (int)ntohs(igmpa->igmpa_type)); 5447c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 5457c478bd9Sstevel@tonic-gate } 5467c478bd9Sstevel@tonic-gate 5477c478bd9Sstevel@tonic-gate /* 5487c478bd9Sstevel@tonic-gate * -Start the timers in all of our membership records 5497c478bd9Sstevel@tonic-gate * for the physical interface on which the query 5507c478bd9Sstevel@tonic-gate * arrived, excluding those that belong to the "all 5517c478bd9Sstevel@tonic-gate * hosts" group (224.0.0.1). 5527c478bd9Sstevel@tonic-gate * 5537c478bd9Sstevel@tonic-gate * -Restart any timer that is already running but has 5547c478bd9Sstevel@tonic-gate * a value longer than the requested timeout. 5557c478bd9Sstevel@tonic-gate * 5567c478bd9Sstevel@tonic-gate * -Use the value specified in the query message as 5577c478bd9Sstevel@tonic-gate * the maximum timeout. 5587c478bd9Sstevel@tonic-gate */ 5597c478bd9Sstevel@tonic-gate next = (unsigned)INFINITY; 5607c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 5617c478bd9Sstevel@tonic-gate for (ilm = ill->ill_ilm; ilm; ilm = ilm->ilm_next) { 5627c478bd9Sstevel@tonic-gate 5637c478bd9Sstevel@tonic-gate /* 5647c478bd9Sstevel@tonic-gate * A multicast router joins INADDR_ANY address 5657c478bd9Sstevel@tonic-gate * to enable promiscuous reception of all 5667c478bd9Sstevel@tonic-gate * mcasts from the interface. This INADDR_ANY 5677c478bd9Sstevel@tonic-gate * is stored in the ilm_v6addr as V6 unspec addr 5687c478bd9Sstevel@tonic-gate */ 5697c478bd9Sstevel@tonic-gate if (!IN6_IS_ADDR_V4MAPPED(&ilm->ilm_v6addr)) 5707c478bd9Sstevel@tonic-gate continue; 5717c478bd9Sstevel@tonic-gate if (ilm->ilm_addr == htonl(INADDR_ANY)) 5727c478bd9Sstevel@tonic-gate continue; 5737c478bd9Sstevel@tonic-gate if (ilm->ilm_addr != htonl(INADDR_ALLHOSTS_GROUP) && 5747c478bd9Sstevel@tonic-gate (igmpa->igmpa_group == 0) || 5757c478bd9Sstevel@tonic-gate (igmpa->igmpa_group == ilm->ilm_addr)) { 5767c478bd9Sstevel@tonic-gate if (ilm->ilm_timer > timer) { 5777c478bd9Sstevel@tonic-gate MCAST_RANDOM_DELAY(ilm->ilm_timer, timer); 5787c478bd9Sstevel@tonic-gate if (ilm->ilm_timer < next) 5797c478bd9Sstevel@tonic-gate next = ilm->ilm_timer; 5807c478bd9Sstevel@tonic-gate } 5817c478bd9Sstevel@tonic-gate } 5827c478bd9Sstevel@tonic-gate } 5837c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 5847c478bd9Sstevel@tonic-gate 5857c478bd9Sstevel@tonic-gate return (next); 5867c478bd9Sstevel@tonic-gate } 5877c478bd9Sstevel@tonic-gate 5887c478bd9Sstevel@tonic-gate static uint_t 5897c478bd9Sstevel@tonic-gate igmpv3_query_in(igmp3qa_t *igmp3qa, ill_t *ill, int igmplen) 5907c478bd9Sstevel@tonic-gate { 5917c478bd9Sstevel@tonic-gate uint_t i, next, mrd, qqi, timer, delay, numsrc; 5927c478bd9Sstevel@tonic-gate ilm_t *ilm; 5937c478bd9Sstevel@tonic-gate ipaddr_t *src_array; 5947c478bd9Sstevel@tonic-gate uint8_t qrv; 595*f4b3ec61Sdh ip_stack_t *ipst; 5967c478bd9Sstevel@tonic-gate 597*f4b3ec61Sdh ipst = ill->ill_ipst; 5987c478bd9Sstevel@tonic-gate /* make sure numsrc matches packet size */ 5997c478bd9Sstevel@tonic-gate numsrc = ntohs(igmp3qa->igmp3qa_numsrc); 6007c478bd9Sstevel@tonic-gate if (igmplen < IGMP_V3_QUERY_MINLEN + (numsrc * sizeof (ipaddr_t))) { 601*f4b3ec61Sdh ++ipst->ips_igmpstat.igps_rcv_tooshort; 6027c478bd9Sstevel@tonic-gate return (0); 6037c478bd9Sstevel@tonic-gate } 6047c478bd9Sstevel@tonic-gate src_array = (ipaddr_t *)&igmp3qa[1]; 6057c478bd9Sstevel@tonic-gate 606*f4b3ec61Sdh ++ipst->ips_igmpstat.igps_rcv_queries; 6077c478bd9Sstevel@tonic-gate 6087c478bd9Sstevel@tonic-gate if ((mrd = (uint_t)igmp3qa->igmp3qa_mxrc) >= IGMP_V3_MAXRT_FPMIN) { 6097c478bd9Sstevel@tonic-gate uint_t hdrval, mant, exp; 6107c478bd9Sstevel@tonic-gate hdrval = (uint_t)igmp3qa->igmp3qa_mxrc; 6117c478bd9Sstevel@tonic-gate mant = hdrval & IGMP_V3_MAXRT_MANT_MASK; 6127c478bd9Sstevel@tonic-gate exp = (hdrval & IGMP_V3_MAXRT_EXP_MASK) >> 4; 6137c478bd9Sstevel@tonic-gate mrd = (mant | 0x10) << (exp + 3); 6147c478bd9Sstevel@tonic-gate } 6157c478bd9Sstevel@tonic-gate if (mrd == 0) 6167c478bd9Sstevel@tonic-gate mrd = MCAST_DEF_QUERY_RESP_INTERVAL; 6177c478bd9Sstevel@tonic-gate timer = DSEC_TO_MSEC(mrd); 6187c478bd9Sstevel@tonic-gate MCAST_RANDOM_DELAY(delay, timer); 6197c478bd9Sstevel@tonic-gate next = (unsigned)INFINITY; 6207c478bd9Sstevel@tonic-gate 6217c478bd9Sstevel@tonic-gate if ((qrv = igmp3qa->igmp3qa_sqrv & IGMP_V3_RV_MASK) == 0) 6227c478bd9Sstevel@tonic-gate ill->ill_mcast_rv = MCAST_DEF_ROBUSTNESS; 6237c478bd9Sstevel@tonic-gate else 6247c478bd9Sstevel@tonic-gate ill->ill_mcast_rv = qrv; 6257c478bd9Sstevel@tonic-gate 6267c478bd9Sstevel@tonic-gate if ((qqi = (uint_t)igmp3qa->igmp3qa_qqic) >= IGMP_V3_QQI_FPMIN) { 6277c478bd9Sstevel@tonic-gate uint_t hdrval, mant, exp; 6287c478bd9Sstevel@tonic-gate hdrval = (uint_t)igmp3qa->igmp3qa_qqic; 6297c478bd9Sstevel@tonic-gate mant = hdrval & IGMP_V3_QQI_MANT_MASK; 6307c478bd9Sstevel@tonic-gate exp = (hdrval & IGMP_V3_QQI_EXP_MASK) >> 4; 6317c478bd9Sstevel@tonic-gate qqi = (mant | 0x10) << (exp + 3); 6327c478bd9Sstevel@tonic-gate } 6337c478bd9Sstevel@tonic-gate ill->ill_mcast_qi = (qqi == 0) ? MCAST_DEF_QUERY_INTERVAL : qqi; 6347c478bd9Sstevel@tonic-gate 6357c478bd9Sstevel@tonic-gate /* 6367c478bd9Sstevel@tonic-gate * If we have a pending general query response that's scheduled 6377c478bd9Sstevel@tonic-gate * sooner than the delay we calculated for this response, then 6387c478bd9Sstevel@tonic-gate * no action is required (RFC3376 section 5.2 rule 1) 6397c478bd9Sstevel@tonic-gate */ 6407c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 6417c478bd9Sstevel@tonic-gate if (ill->ill_global_timer < delay) { 6427c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 6437c478bd9Sstevel@tonic-gate return (next); 6447c478bd9Sstevel@tonic-gate } 6457c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 6467c478bd9Sstevel@tonic-gate 6477c478bd9Sstevel@tonic-gate /* 6487c478bd9Sstevel@tonic-gate * Now take action depending upon query type: 6497c478bd9Sstevel@tonic-gate * general, group specific, or group/source specific. 6507c478bd9Sstevel@tonic-gate */ 6517c478bd9Sstevel@tonic-gate if ((numsrc == 0) && (igmp3qa->igmp3qa_group == INADDR_ANY)) { 6527c478bd9Sstevel@tonic-gate /* 6537c478bd9Sstevel@tonic-gate * general query 6547c478bd9Sstevel@tonic-gate * We know global timer is either not running or is 6557c478bd9Sstevel@tonic-gate * greater than our calculated delay, so reset it to 6567c478bd9Sstevel@tonic-gate * our delay (random value in range [0, response time]). 6577c478bd9Sstevel@tonic-gate */ 6587c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 6597c478bd9Sstevel@tonic-gate ill->ill_global_timer = delay; 6607c478bd9Sstevel@tonic-gate next = ill->ill_global_timer; 6617c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 6627c478bd9Sstevel@tonic-gate 6637c478bd9Sstevel@tonic-gate } else { 6647c478bd9Sstevel@tonic-gate /* group or group/source specific query */ 6657c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 6667c478bd9Sstevel@tonic-gate for (ilm = ill->ill_ilm; ilm; ilm = ilm->ilm_next) { 6677c478bd9Sstevel@tonic-gate if (!IN6_IS_ADDR_V4MAPPED(&ilm->ilm_v6addr) || 6687c478bd9Sstevel@tonic-gate (ilm->ilm_addr == htonl(INADDR_ANY)) || 6697c478bd9Sstevel@tonic-gate (ilm->ilm_addr == htonl(INADDR_ALLHOSTS_GROUP)) || 6707c478bd9Sstevel@tonic-gate (igmp3qa->igmp3qa_group != ilm->ilm_addr)) 6717c478bd9Sstevel@tonic-gate continue; 6727c478bd9Sstevel@tonic-gate /* 6737c478bd9Sstevel@tonic-gate * If the query is group specific or we have a 6747c478bd9Sstevel@tonic-gate * pending group specific query, the response is 6757c478bd9Sstevel@tonic-gate * group specific (pending sources list should be 6767c478bd9Sstevel@tonic-gate * empty). Otherwise, need to update the pending 6777c478bd9Sstevel@tonic-gate * sources list for the group and source specific 6787c478bd9Sstevel@tonic-gate * response. 6797c478bd9Sstevel@tonic-gate */ 6807c478bd9Sstevel@tonic-gate if (numsrc == 0 || (ilm->ilm_timer < INFINITY && 6817c478bd9Sstevel@tonic-gate SLIST_IS_EMPTY(ilm->ilm_pendsrcs))) { 6827c478bd9Sstevel@tonic-gate group_query: 6837c478bd9Sstevel@tonic-gate FREE_SLIST(ilm->ilm_pendsrcs); 6847c478bd9Sstevel@tonic-gate ilm->ilm_pendsrcs = NULL; 6857c478bd9Sstevel@tonic-gate } else { 6867c478bd9Sstevel@tonic-gate boolean_t overflow; 6877c478bd9Sstevel@tonic-gate slist_t *pktl; 6887c478bd9Sstevel@tonic-gate if (numsrc > MAX_FILTER_SIZE || 6897c478bd9Sstevel@tonic-gate (ilm->ilm_pendsrcs == NULL && 6907c478bd9Sstevel@tonic-gate (ilm->ilm_pendsrcs = l_alloc()) == NULL)) { 6917c478bd9Sstevel@tonic-gate /* 6927c478bd9Sstevel@tonic-gate * We've been sent more sources than 6937c478bd9Sstevel@tonic-gate * we can deal with; or we can't deal 6947c478bd9Sstevel@tonic-gate * with a source list at all. Revert 6957c478bd9Sstevel@tonic-gate * to a group specific query. 6967c478bd9Sstevel@tonic-gate */ 6977c478bd9Sstevel@tonic-gate goto group_query; 6987c478bd9Sstevel@tonic-gate } 6997c478bd9Sstevel@tonic-gate if ((pktl = l_alloc()) == NULL) 7007c478bd9Sstevel@tonic-gate goto group_query; 7017c478bd9Sstevel@tonic-gate pktl->sl_numsrc = numsrc; 7027c478bd9Sstevel@tonic-gate for (i = 0; i < numsrc; i++) 7037c478bd9Sstevel@tonic-gate IN6_IPADDR_TO_V4MAPPED(src_array[i], 7047c478bd9Sstevel@tonic-gate &(pktl->sl_addr[i])); 7057c478bd9Sstevel@tonic-gate l_union_in_a(ilm->ilm_pendsrcs, pktl, 7067c478bd9Sstevel@tonic-gate &overflow); 7077c478bd9Sstevel@tonic-gate l_free(pktl); 7087c478bd9Sstevel@tonic-gate if (overflow) 7097c478bd9Sstevel@tonic-gate goto group_query; 7107c478bd9Sstevel@tonic-gate } 7117c478bd9Sstevel@tonic-gate /* choose soonest timer */ 7127c478bd9Sstevel@tonic-gate ilm->ilm_timer = MIN(ilm->ilm_timer, delay); 7137c478bd9Sstevel@tonic-gate if (ilm->ilm_timer < next) 7147c478bd9Sstevel@tonic-gate next = ilm->ilm_timer; 7157c478bd9Sstevel@tonic-gate } 7167c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 7177c478bd9Sstevel@tonic-gate } 7187c478bd9Sstevel@tonic-gate 7197c478bd9Sstevel@tonic-gate return (next); 7207c478bd9Sstevel@tonic-gate } 7217c478bd9Sstevel@tonic-gate 7227c478bd9Sstevel@tonic-gate void 7237c478bd9Sstevel@tonic-gate igmp_joingroup(ilm_t *ilm) 7247c478bd9Sstevel@tonic-gate { 7257c478bd9Sstevel@tonic-gate ill_t *ill; 726*f4b3ec61Sdh ip_stack_t *ipst = ilm->ilm_ipst; 7277c478bd9Sstevel@tonic-gate 7287c478bd9Sstevel@tonic-gate ill = ilm->ilm_ipif->ipif_ill; 7297c478bd9Sstevel@tonic-gate 7307c478bd9Sstevel@tonic-gate ASSERT(IAM_WRITER_ILL(ill)); 7317c478bd9Sstevel@tonic-gate ASSERT(ilm->ilm_ill == NULL && !ilm->ilm_ipif->ipif_isv6); 7327c478bd9Sstevel@tonic-gate 7337c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 7347c478bd9Sstevel@tonic-gate if (ilm->ilm_addr == htonl(INADDR_ALLHOSTS_GROUP)) { 7357c478bd9Sstevel@tonic-gate ilm->ilm_rtx.rtx_timer = INFINITY; 7367c478bd9Sstevel@tonic-gate ilm->ilm_state = IGMP_OTHERMEMBER; 7377c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 7387c478bd9Sstevel@tonic-gate } else { 7397c478bd9Sstevel@tonic-gate ip1dbg(("Querier mode %d, sending report, group %x\n", 7407c478bd9Sstevel@tonic-gate ill->ill_mcast_type, htonl(ilm->ilm_addr))); 7417c478bd9Sstevel@tonic-gate if (ill->ill_mcast_type == IGMP_V1_ROUTER) { 7427c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 7437c478bd9Sstevel@tonic-gate igmp_sendpkt(ilm, IGMP_V1_MEMBERSHIP_REPORT, 0); 7447c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 7457c478bd9Sstevel@tonic-gate } else if (ill->ill_mcast_type == IGMP_V2_ROUTER) { 7467c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 7477c478bd9Sstevel@tonic-gate igmp_sendpkt(ilm, IGMP_V2_MEMBERSHIP_REPORT, 0); 7487c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 7497c478bd9Sstevel@tonic-gate } else if (ill->ill_mcast_type == IGMP_V3_ROUTER) { 7507c478bd9Sstevel@tonic-gate mrec_t *rp; 7517c478bd9Sstevel@tonic-gate mcast_record_t rtype; 7527c478bd9Sstevel@tonic-gate /* 7537c478bd9Sstevel@tonic-gate * The possible state changes we need to handle here: 7547c478bd9Sstevel@tonic-gate * Old State New State Report 7557c478bd9Sstevel@tonic-gate * 7567c478bd9Sstevel@tonic-gate * INCLUDE(0) INCLUDE(X) ALLOW(X),BLOCK(0) 7577c478bd9Sstevel@tonic-gate * INCLUDE(0) EXCLUDE(X) TO_EX(X) 7587c478bd9Sstevel@tonic-gate * 7597c478bd9Sstevel@tonic-gate * No need to send the BLOCK(0) report; ALLOW(X) 7607c478bd9Sstevel@tonic-gate * is enough. 7617c478bd9Sstevel@tonic-gate */ 7627c478bd9Sstevel@tonic-gate rtype = (ilm->ilm_fmode == MODE_IS_INCLUDE) ? 7637c478bd9Sstevel@tonic-gate ALLOW_NEW_SOURCES : CHANGE_TO_EXCLUDE; 7647c478bd9Sstevel@tonic-gate rp = mcast_bldmrec(rtype, &ilm->ilm_v6addr, 7657c478bd9Sstevel@tonic-gate ilm->ilm_filter, NULL); 7667c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 7677c478bd9Sstevel@tonic-gate igmpv3_sendrpt(ilm->ilm_ipif, rp); 7687c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 7697c478bd9Sstevel@tonic-gate /* 7707c478bd9Sstevel@tonic-gate * Set up retransmission state. Timer is set below, 7717c478bd9Sstevel@tonic-gate * for both v3 and older versions. 7727c478bd9Sstevel@tonic-gate */ 7737c478bd9Sstevel@tonic-gate mcast_init_rtx(ill, &ilm->ilm_rtx, rtype, 7747c478bd9Sstevel@tonic-gate ilm->ilm_filter); 7757c478bd9Sstevel@tonic-gate } 7767c478bd9Sstevel@tonic-gate 7777c478bd9Sstevel@tonic-gate /* Set the ilm timer value */ 7787c478bd9Sstevel@tonic-gate MCAST_RANDOM_DELAY(ilm->ilm_rtx.rtx_timer, 7797c478bd9Sstevel@tonic-gate SEC_TO_MSEC(IGMP_MAX_HOST_REPORT_DELAY)); 7807c478bd9Sstevel@tonic-gate ilm->ilm_state = IGMP_IREPORTEDLAST; 7817c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 7827c478bd9Sstevel@tonic-gate 7837c478bd9Sstevel@tonic-gate /* 7847c478bd9Sstevel@tonic-gate * To avoid deadlock, we don't call igmp_start_timers from 7857c478bd9Sstevel@tonic-gate * here. igmp_start_timers needs to call untimeout, and we 7867c478bd9Sstevel@tonic-gate * can't hold the ipsq across untimeout since 7877c478bd9Sstevel@tonic-gate * igmp_timeout_handler could be blocking trying to 7887c478bd9Sstevel@tonic-gate * acquire the ipsq. Instead we start the timer after we get 7897c478bd9Sstevel@tonic-gate * out of the ipsq in ipsq_exit. 7907c478bd9Sstevel@tonic-gate */ 791*f4b3ec61Sdh mutex_enter(&ipst->ips_igmp_timer_lock); 792*f4b3ec61Sdh ipst->ips_igmp_deferred_next = MIN(ilm->ilm_rtx.rtx_timer, 793*f4b3ec61Sdh ipst->ips_igmp_deferred_next); 794*f4b3ec61Sdh mutex_exit(&ipst->ips_igmp_timer_lock); 7957c478bd9Sstevel@tonic-gate } 7967c478bd9Sstevel@tonic-gate 7977c478bd9Sstevel@tonic-gate if (ip_debug > 1) { 7987c478bd9Sstevel@tonic-gate (void) mi_strlog(ilm->ilm_ipif->ipif_ill->ill_rq, 1, SL_TRACE, 7997c478bd9Sstevel@tonic-gate "igmp_joingroup: multicast_type %d timer %d", 8007c478bd9Sstevel@tonic-gate (ilm->ilm_ipif->ipif_ill->ill_mcast_type), 8017c478bd9Sstevel@tonic-gate (int)ntohl(ilm->ilm_rtx.rtx_timer)); 8027c478bd9Sstevel@tonic-gate } 8037c478bd9Sstevel@tonic-gate } 8047c478bd9Sstevel@tonic-gate 8057c478bd9Sstevel@tonic-gate void 8067c478bd9Sstevel@tonic-gate mld_joingroup(ilm_t *ilm) 8077c478bd9Sstevel@tonic-gate { 8087c478bd9Sstevel@tonic-gate ill_t *ill; 809*f4b3ec61Sdh ip_stack_t *ipst = ilm->ilm_ipst; 8107c478bd9Sstevel@tonic-gate 8117c478bd9Sstevel@tonic-gate ill = ilm->ilm_ill; 8127c478bd9Sstevel@tonic-gate 8137c478bd9Sstevel@tonic-gate ASSERT(IAM_WRITER_ILL(ill)); 8147c478bd9Sstevel@tonic-gate ASSERT(ilm->ilm_ipif == NULL && ill->ill_isv6); 8157c478bd9Sstevel@tonic-gate 8167c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 8177c478bd9Sstevel@tonic-gate if (IN6_ARE_ADDR_EQUAL(&ipv6_all_hosts_mcast, &ilm->ilm_v6addr)) { 8187c478bd9Sstevel@tonic-gate ilm->ilm_rtx.rtx_timer = INFINITY; 8197c478bd9Sstevel@tonic-gate ilm->ilm_state = IGMP_OTHERMEMBER; 8207c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 8217c478bd9Sstevel@tonic-gate } else { 8227c478bd9Sstevel@tonic-gate if (ill->ill_mcast_type == MLD_V1_ROUTER) { 8237c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 8247c478bd9Sstevel@tonic-gate mld_sendpkt(ilm, MLD_LISTENER_REPORT, NULL); 8257c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 8267c478bd9Sstevel@tonic-gate } else { 8277c478bd9Sstevel@tonic-gate mrec_t *rp; 8287c478bd9Sstevel@tonic-gate mcast_record_t rtype; 8297c478bd9Sstevel@tonic-gate /* 8307c478bd9Sstevel@tonic-gate * The possible state changes we need to handle here: 8317c478bd9Sstevel@tonic-gate * Old State New State Report 8327c478bd9Sstevel@tonic-gate * 8337c478bd9Sstevel@tonic-gate * INCLUDE(0) INCLUDE(X) ALLOW(X),BLOCK(0) 8347c478bd9Sstevel@tonic-gate * INCLUDE(0) EXCLUDE(X) TO_EX(X) 8357c478bd9Sstevel@tonic-gate * 8367c478bd9Sstevel@tonic-gate * No need to send the BLOCK(0) report; ALLOW(X) 8377c478bd9Sstevel@tonic-gate * is enough 8387c478bd9Sstevel@tonic-gate */ 8397c478bd9Sstevel@tonic-gate rtype = (ilm->ilm_fmode == MODE_IS_INCLUDE) ? 8407c478bd9Sstevel@tonic-gate ALLOW_NEW_SOURCES : CHANGE_TO_EXCLUDE; 8417c478bd9Sstevel@tonic-gate rp = mcast_bldmrec(rtype, &ilm->ilm_v6addr, 8427c478bd9Sstevel@tonic-gate ilm->ilm_filter, NULL); 8437c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 8447c478bd9Sstevel@tonic-gate mldv2_sendrpt(ill, rp); 8457c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 8467c478bd9Sstevel@tonic-gate /* 8477c478bd9Sstevel@tonic-gate * Set up retransmission state. Timer is set below, 8487c478bd9Sstevel@tonic-gate * for both v2 and v1. 8497c478bd9Sstevel@tonic-gate */ 8507c478bd9Sstevel@tonic-gate mcast_init_rtx(ill, &ilm->ilm_rtx, rtype, 8517c478bd9Sstevel@tonic-gate ilm->ilm_filter); 8527c478bd9Sstevel@tonic-gate } 8537c478bd9Sstevel@tonic-gate 8547c478bd9Sstevel@tonic-gate /* Set the ilm timer value */ 8557c478bd9Sstevel@tonic-gate ASSERT(ill->ill_mcast_type != MLD_V2_ROUTER || 8567c478bd9Sstevel@tonic-gate ilm->ilm_rtx.rtx_cnt > 0); 8577c478bd9Sstevel@tonic-gate MCAST_RANDOM_DELAY(ilm->ilm_rtx.rtx_timer, 8587c478bd9Sstevel@tonic-gate SEC_TO_MSEC(ICMP6_MAX_HOST_REPORT_DELAY)); 8597c478bd9Sstevel@tonic-gate ilm->ilm_state = IGMP_IREPORTEDLAST; 8607c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 8617c478bd9Sstevel@tonic-gate 8627c478bd9Sstevel@tonic-gate /* 8637c478bd9Sstevel@tonic-gate * To avoid deadlock, we don't call mld_start_timers from 8647c478bd9Sstevel@tonic-gate * here. mld_start_timers needs to call untimeout, and we 8657c478bd9Sstevel@tonic-gate * can't hold the ipsq (i.e. the lock) across untimeout 8667c478bd9Sstevel@tonic-gate * since mld_timeout_handler could be blocking trying to 8677c478bd9Sstevel@tonic-gate * acquire the ipsq. Instead we start the timer after we get 8687c478bd9Sstevel@tonic-gate * out of the ipsq in ipsq_exit 8697c478bd9Sstevel@tonic-gate */ 870*f4b3ec61Sdh mutex_enter(&ipst->ips_mld_timer_lock); 871*f4b3ec61Sdh ipst->ips_mld_deferred_next = MIN(ilm->ilm_rtx.rtx_timer, 872*f4b3ec61Sdh ipst->ips_mld_deferred_next); 873*f4b3ec61Sdh mutex_exit(&ipst->ips_mld_timer_lock); 8747c478bd9Sstevel@tonic-gate } 8757c478bd9Sstevel@tonic-gate 8767c478bd9Sstevel@tonic-gate if (ip_debug > 1) { 8777c478bd9Sstevel@tonic-gate (void) mi_strlog(ilm->ilm_ill->ill_rq, 1, SL_TRACE, 8787c478bd9Sstevel@tonic-gate "mld_joingroup: multicast_type %d timer %d", 8797c478bd9Sstevel@tonic-gate (ilm->ilm_ill->ill_mcast_type), 8807c478bd9Sstevel@tonic-gate (int)ntohl(ilm->ilm_rtx.rtx_timer)); 8817c478bd9Sstevel@tonic-gate } 8827c478bd9Sstevel@tonic-gate } 8837c478bd9Sstevel@tonic-gate 8847c478bd9Sstevel@tonic-gate void 8857c478bd9Sstevel@tonic-gate igmp_leavegroup(ilm_t *ilm) 8867c478bd9Sstevel@tonic-gate { 8877c478bd9Sstevel@tonic-gate ill_t *ill = ilm->ilm_ipif->ipif_ill; 8887c478bd9Sstevel@tonic-gate 8897c478bd9Sstevel@tonic-gate ASSERT(ilm->ilm_ill == NULL); 8907c478bd9Sstevel@tonic-gate ASSERT(!ill->ill_isv6); 8917c478bd9Sstevel@tonic-gate 8927c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 8937c478bd9Sstevel@tonic-gate if (ilm->ilm_state == IGMP_IREPORTEDLAST && 8947c478bd9Sstevel@tonic-gate ill->ill_mcast_type == IGMP_V2_ROUTER && 8957c478bd9Sstevel@tonic-gate (ilm->ilm_addr != htonl(INADDR_ALLHOSTS_GROUP))) { 8967c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 8977c478bd9Sstevel@tonic-gate igmp_sendpkt(ilm, IGMP_V2_LEAVE_GROUP, 8987c478bd9Sstevel@tonic-gate (htonl(INADDR_ALLRTRS_GROUP))); 8997c478bd9Sstevel@tonic-gate return; 9007c478bd9Sstevel@tonic-gate } else if ((ill->ill_mcast_type == IGMP_V3_ROUTER) && 9017c478bd9Sstevel@tonic-gate (ilm->ilm_addr != htonl(INADDR_ALLHOSTS_GROUP))) { 9027c478bd9Sstevel@tonic-gate mrec_t *rp; 9037c478bd9Sstevel@tonic-gate /* 9047c478bd9Sstevel@tonic-gate * The possible state changes we need to handle here: 9057c478bd9Sstevel@tonic-gate * Old State New State Report 9067c478bd9Sstevel@tonic-gate * 9077c478bd9Sstevel@tonic-gate * INCLUDE(X) INCLUDE(0) ALLOW(0),BLOCK(X) 9087c478bd9Sstevel@tonic-gate * EXCLUDE(X) INCLUDE(0) TO_IN(0) 9097c478bd9Sstevel@tonic-gate * 9107c478bd9Sstevel@tonic-gate * No need to send the ALLOW(0) report; BLOCK(X) is enough 9117c478bd9Sstevel@tonic-gate */ 9127c478bd9Sstevel@tonic-gate if (ilm->ilm_fmode == MODE_IS_INCLUDE) { 9137c478bd9Sstevel@tonic-gate rp = mcast_bldmrec(BLOCK_OLD_SOURCES, &ilm->ilm_v6addr, 9147c478bd9Sstevel@tonic-gate ilm->ilm_filter, NULL); 9157c478bd9Sstevel@tonic-gate } else { 9167c478bd9Sstevel@tonic-gate rp = mcast_bldmrec(CHANGE_TO_INCLUDE, &ilm->ilm_v6addr, 9177c478bd9Sstevel@tonic-gate NULL, NULL); 9187c478bd9Sstevel@tonic-gate } 9197c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 9207c478bd9Sstevel@tonic-gate igmpv3_sendrpt(ilm->ilm_ipif, rp); 9217c478bd9Sstevel@tonic-gate return; 9227c478bd9Sstevel@tonic-gate } 9237c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 9247c478bd9Sstevel@tonic-gate } 9257c478bd9Sstevel@tonic-gate 9267c478bd9Sstevel@tonic-gate void 9277c478bd9Sstevel@tonic-gate mld_leavegroup(ilm_t *ilm) 9287c478bd9Sstevel@tonic-gate { 9297c478bd9Sstevel@tonic-gate ill_t *ill = ilm->ilm_ill; 9307c478bd9Sstevel@tonic-gate 9317c478bd9Sstevel@tonic-gate ASSERT(ilm->ilm_ipif == NULL); 9327c478bd9Sstevel@tonic-gate ASSERT(ill->ill_isv6); 9337c478bd9Sstevel@tonic-gate 9347c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 9357c478bd9Sstevel@tonic-gate if (ilm->ilm_state == IGMP_IREPORTEDLAST && 9367c478bd9Sstevel@tonic-gate ill->ill_mcast_type == MLD_V1_ROUTER && 9377c478bd9Sstevel@tonic-gate (!IN6_ARE_ADDR_EQUAL(&ipv6_all_hosts_mcast, &ilm->ilm_v6addr))) { 9387c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 9397c478bd9Sstevel@tonic-gate mld_sendpkt(ilm, MLD_LISTENER_REDUCTION, &ipv6_all_rtrs_mcast); 9407c478bd9Sstevel@tonic-gate return; 9417c478bd9Sstevel@tonic-gate } else if ((ill->ill_mcast_type == MLD_V2_ROUTER) && 9427c478bd9Sstevel@tonic-gate (!IN6_ARE_ADDR_EQUAL(&ipv6_all_hosts_mcast, &ilm->ilm_v6addr))) { 9437c478bd9Sstevel@tonic-gate mrec_t *rp; 9447c478bd9Sstevel@tonic-gate /* 9457c478bd9Sstevel@tonic-gate * The possible state changes we need to handle here: 9467c478bd9Sstevel@tonic-gate * Old State New State Report 9477c478bd9Sstevel@tonic-gate * 9487c478bd9Sstevel@tonic-gate * INCLUDE(X) INCLUDE(0) ALLOW(0),BLOCK(X) 9497c478bd9Sstevel@tonic-gate * EXCLUDE(X) INCLUDE(0) TO_IN(0) 9507c478bd9Sstevel@tonic-gate * 9517c478bd9Sstevel@tonic-gate * No need to send the ALLOW(0) report; BLOCK(X) is enough 9527c478bd9Sstevel@tonic-gate */ 9537c478bd9Sstevel@tonic-gate if (ilm->ilm_fmode == MODE_IS_INCLUDE) { 9547c478bd9Sstevel@tonic-gate rp = mcast_bldmrec(BLOCK_OLD_SOURCES, &ilm->ilm_v6addr, 9557c478bd9Sstevel@tonic-gate ilm->ilm_filter, NULL); 9567c478bd9Sstevel@tonic-gate } else { 9577c478bd9Sstevel@tonic-gate rp = mcast_bldmrec(CHANGE_TO_INCLUDE, &ilm->ilm_v6addr, 9587c478bd9Sstevel@tonic-gate NULL, NULL); 9597c478bd9Sstevel@tonic-gate } 9607c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 9617c478bd9Sstevel@tonic-gate mldv2_sendrpt(ill, rp); 9627c478bd9Sstevel@tonic-gate return; 9637c478bd9Sstevel@tonic-gate } 9647c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 9657c478bd9Sstevel@tonic-gate } 9667c478bd9Sstevel@tonic-gate 9677c478bd9Sstevel@tonic-gate void 9687c478bd9Sstevel@tonic-gate igmp_statechange(ilm_t *ilm, mcast_record_t fmode, slist_t *flist) 9697c478bd9Sstevel@tonic-gate { 9707c478bd9Sstevel@tonic-gate ill_t *ill; 9717c478bd9Sstevel@tonic-gate mrec_t *rp; 972*f4b3ec61Sdh ip_stack_t *ipst = ilm->ilm_ipst; 9737c478bd9Sstevel@tonic-gate 9747c478bd9Sstevel@tonic-gate ASSERT(ilm != NULL); 9757c478bd9Sstevel@tonic-gate 9767c478bd9Sstevel@tonic-gate /* state change reports should only be sent if the router is v3 */ 9777c478bd9Sstevel@tonic-gate if (ilm->ilm_ipif->ipif_ill->ill_mcast_type != IGMP_V3_ROUTER) 9787c478bd9Sstevel@tonic-gate return; 9797c478bd9Sstevel@tonic-gate 9807c478bd9Sstevel@tonic-gate if (ilm->ilm_ill == NULL) { 9817c478bd9Sstevel@tonic-gate ASSERT(ilm->ilm_ipif != NULL); 9827c478bd9Sstevel@tonic-gate ill = ilm->ilm_ipif->ipif_ill; 9837c478bd9Sstevel@tonic-gate } else { 9847c478bd9Sstevel@tonic-gate ill = ilm->ilm_ill; 9857c478bd9Sstevel@tonic-gate } 9867c478bd9Sstevel@tonic-gate 9877c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 9887c478bd9Sstevel@tonic-gate 9897c478bd9Sstevel@tonic-gate /* 9907c478bd9Sstevel@tonic-gate * Compare existing(old) state with the new state and prepare 9917c478bd9Sstevel@tonic-gate * State Change Report, according to the rules in RFC 3376: 9927c478bd9Sstevel@tonic-gate * 9937c478bd9Sstevel@tonic-gate * Old State New State State Change Report 9947c478bd9Sstevel@tonic-gate * 9957c478bd9Sstevel@tonic-gate * INCLUDE(A) INCLUDE(B) ALLOW(B-A),BLOCK(A-B) 9967c478bd9Sstevel@tonic-gate * EXCLUDE(A) EXCLUDE(B) ALLOW(A-B),BLOCK(B-A) 9977c478bd9Sstevel@tonic-gate * INCLUDE(A) EXCLUDE(B) TO_EX(B) 9987c478bd9Sstevel@tonic-gate * EXCLUDE(A) INCLUDE(B) TO_IN(B) 9997c478bd9Sstevel@tonic-gate */ 10007c478bd9Sstevel@tonic-gate 10017c478bd9Sstevel@tonic-gate if (ilm->ilm_fmode == fmode) { 10027c478bd9Sstevel@tonic-gate slist_t *a_minus_b = NULL, *b_minus_a = NULL; 10037c478bd9Sstevel@tonic-gate slist_t *allow, *block; 10047c478bd9Sstevel@tonic-gate if (((a_minus_b = l_alloc()) == NULL) || 10057c478bd9Sstevel@tonic-gate ((b_minus_a = l_alloc()) == NULL)) { 10067c478bd9Sstevel@tonic-gate l_free(a_minus_b); 10077c478bd9Sstevel@tonic-gate if (ilm->ilm_fmode == MODE_IS_INCLUDE) 10087c478bd9Sstevel@tonic-gate goto send_to_ex; 10097c478bd9Sstevel@tonic-gate else 10107c478bd9Sstevel@tonic-gate goto send_to_in; 10117c478bd9Sstevel@tonic-gate } 10127c478bd9Sstevel@tonic-gate l_difference(ilm->ilm_filter, flist, a_minus_b); 10137c478bd9Sstevel@tonic-gate l_difference(flist, ilm->ilm_filter, b_minus_a); 10147c478bd9Sstevel@tonic-gate if (ilm->ilm_fmode == MODE_IS_INCLUDE) { 10157c478bd9Sstevel@tonic-gate allow = b_minus_a; 10167c478bd9Sstevel@tonic-gate block = a_minus_b; 10177c478bd9Sstevel@tonic-gate } else { 10187c478bd9Sstevel@tonic-gate allow = a_minus_b; 10197c478bd9Sstevel@tonic-gate block = b_minus_a; 10207c478bd9Sstevel@tonic-gate } 10217c478bd9Sstevel@tonic-gate rp = NULL; 10227c478bd9Sstevel@tonic-gate if (!SLIST_IS_EMPTY(allow)) 10237c478bd9Sstevel@tonic-gate rp = mcast_bldmrec(ALLOW_NEW_SOURCES, &ilm->ilm_v6addr, 10247c478bd9Sstevel@tonic-gate allow, rp); 10257c478bd9Sstevel@tonic-gate if (!SLIST_IS_EMPTY(block)) 10267c478bd9Sstevel@tonic-gate rp = mcast_bldmrec(BLOCK_OLD_SOURCES, &ilm->ilm_v6addr, 10277c478bd9Sstevel@tonic-gate block, rp); 10287c478bd9Sstevel@tonic-gate l_free(a_minus_b); 10297c478bd9Sstevel@tonic-gate l_free(b_minus_a); 10307c478bd9Sstevel@tonic-gate } else if (ilm->ilm_fmode == MODE_IS_INCLUDE) { 10317c478bd9Sstevel@tonic-gate send_to_ex: 10327c478bd9Sstevel@tonic-gate rp = mcast_bldmrec(CHANGE_TO_EXCLUDE, &ilm->ilm_v6addr, flist, 10337c478bd9Sstevel@tonic-gate NULL); 10347c478bd9Sstevel@tonic-gate } else { 10357c478bd9Sstevel@tonic-gate send_to_in: 10367c478bd9Sstevel@tonic-gate rp = mcast_bldmrec(CHANGE_TO_INCLUDE, &ilm->ilm_v6addr, flist, 10377c478bd9Sstevel@tonic-gate NULL); 10387c478bd9Sstevel@tonic-gate } 10397c478bd9Sstevel@tonic-gate 10407c478bd9Sstevel@tonic-gate /* 10417c478bd9Sstevel@tonic-gate * Need to set up retransmission state; merge the new info with the 10427c478bd9Sstevel@tonic-gate * current state (which may be null). If the timer is not currently 10437c478bd9Sstevel@tonic-gate * running, start it (need to do a delayed start of the timer as 10447c478bd9Sstevel@tonic-gate * we're currently in the sq). 10457c478bd9Sstevel@tonic-gate */ 10467c478bd9Sstevel@tonic-gate rp = mcast_merge_rtx(ilm, rp, flist); 10477c478bd9Sstevel@tonic-gate if (ilm->ilm_rtx.rtx_timer == INFINITY) { 10487c478bd9Sstevel@tonic-gate MCAST_RANDOM_DELAY(ilm->ilm_rtx.rtx_timer, 10497c478bd9Sstevel@tonic-gate SEC_TO_MSEC(IGMP_MAX_HOST_REPORT_DELAY)); 1050*f4b3ec61Sdh mutex_enter(&ipst->ips_igmp_timer_lock); 1051*f4b3ec61Sdh ipst->ips_igmp_deferred_next = MIN(ipst->ips_igmp_deferred_next, 10527c478bd9Sstevel@tonic-gate ilm->ilm_rtx.rtx_timer); 1053*f4b3ec61Sdh mutex_exit(&ipst->ips_igmp_timer_lock); 10547c478bd9Sstevel@tonic-gate } 10557c478bd9Sstevel@tonic-gate 10567c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 10577c478bd9Sstevel@tonic-gate igmpv3_sendrpt(ilm->ilm_ipif, rp); 10587c478bd9Sstevel@tonic-gate } 10597c478bd9Sstevel@tonic-gate 10607c478bd9Sstevel@tonic-gate void 10617c478bd9Sstevel@tonic-gate mld_statechange(ilm_t *ilm, mcast_record_t fmode, slist_t *flist) 10627c478bd9Sstevel@tonic-gate { 10637c478bd9Sstevel@tonic-gate ill_t *ill; 10647c478bd9Sstevel@tonic-gate mrec_t *rp = NULL; 1065*f4b3ec61Sdh ip_stack_t *ipst = ilm->ilm_ipst; 10667c478bd9Sstevel@tonic-gate 10677c478bd9Sstevel@tonic-gate ASSERT(ilm != NULL); 10687c478bd9Sstevel@tonic-gate 10697c478bd9Sstevel@tonic-gate ill = ilm->ilm_ill; 10707c478bd9Sstevel@tonic-gate 10717c478bd9Sstevel@tonic-gate /* only need to send if we have an mldv2-capable router */ 10727c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 10737c478bd9Sstevel@tonic-gate if (ill->ill_mcast_type != MLD_V2_ROUTER) { 10747c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 10757c478bd9Sstevel@tonic-gate return; 10767c478bd9Sstevel@tonic-gate } 10777c478bd9Sstevel@tonic-gate 10787c478bd9Sstevel@tonic-gate /* 10797c478bd9Sstevel@tonic-gate * Compare existing (old) state with the new state passed in 10807c478bd9Sstevel@tonic-gate * and send appropriate MLDv2 State Change Report. 10817c478bd9Sstevel@tonic-gate * 10827c478bd9Sstevel@tonic-gate * Old State New State State Change Report 10837c478bd9Sstevel@tonic-gate * 10847c478bd9Sstevel@tonic-gate * INCLUDE(A) INCLUDE(B) ALLOW(B-A),BLOCK(A-B) 10857c478bd9Sstevel@tonic-gate * EXCLUDE(A) EXCLUDE(B) ALLOW(A-B),BLOCK(B-A) 10867c478bd9Sstevel@tonic-gate * INCLUDE(A) EXCLUDE(B) TO_EX(B) 10877c478bd9Sstevel@tonic-gate * EXCLUDE(A) INCLUDE(B) TO_IN(B) 10887c478bd9Sstevel@tonic-gate */ 10897c478bd9Sstevel@tonic-gate if (ilm->ilm_fmode == fmode) { 10907c478bd9Sstevel@tonic-gate slist_t *a_minus_b = NULL, *b_minus_a = NULL; 10917c478bd9Sstevel@tonic-gate slist_t *allow, *block; 10927c478bd9Sstevel@tonic-gate if (((a_minus_b = l_alloc()) == NULL) || 10937c478bd9Sstevel@tonic-gate ((b_minus_a = l_alloc()) == NULL)) { 10947c478bd9Sstevel@tonic-gate l_free(a_minus_b); 10957c478bd9Sstevel@tonic-gate if (ilm->ilm_fmode == MODE_IS_INCLUDE) 10967c478bd9Sstevel@tonic-gate goto send_to_ex; 10977c478bd9Sstevel@tonic-gate else 10987c478bd9Sstevel@tonic-gate goto send_to_in; 10997c478bd9Sstevel@tonic-gate } 11007c478bd9Sstevel@tonic-gate l_difference(ilm->ilm_filter, flist, a_minus_b); 11017c478bd9Sstevel@tonic-gate l_difference(flist, ilm->ilm_filter, b_minus_a); 11027c478bd9Sstevel@tonic-gate if (ilm->ilm_fmode == MODE_IS_INCLUDE) { 11037c478bd9Sstevel@tonic-gate allow = b_minus_a; 11047c478bd9Sstevel@tonic-gate block = a_minus_b; 11057c478bd9Sstevel@tonic-gate } else { 11067c478bd9Sstevel@tonic-gate allow = a_minus_b; 11077c478bd9Sstevel@tonic-gate block = b_minus_a; 11087c478bd9Sstevel@tonic-gate } 11097c478bd9Sstevel@tonic-gate if (!SLIST_IS_EMPTY(allow)) 11107c478bd9Sstevel@tonic-gate rp = mcast_bldmrec(ALLOW_NEW_SOURCES, &ilm->ilm_v6addr, 11117c478bd9Sstevel@tonic-gate allow, rp); 11127c478bd9Sstevel@tonic-gate if (!SLIST_IS_EMPTY(block)) 11137c478bd9Sstevel@tonic-gate rp = mcast_bldmrec(BLOCK_OLD_SOURCES, &ilm->ilm_v6addr, 11147c478bd9Sstevel@tonic-gate block, rp); 11157c478bd9Sstevel@tonic-gate l_free(a_minus_b); 11167c478bd9Sstevel@tonic-gate l_free(b_minus_a); 11177c478bd9Sstevel@tonic-gate } else if (ilm->ilm_fmode == MODE_IS_INCLUDE) { 11187c478bd9Sstevel@tonic-gate send_to_ex: 11197c478bd9Sstevel@tonic-gate rp = mcast_bldmrec(CHANGE_TO_EXCLUDE, &ilm->ilm_v6addr, flist, 11207c478bd9Sstevel@tonic-gate NULL); 11217c478bd9Sstevel@tonic-gate } else { 11227c478bd9Sstevel@tonic-gate send_to_in: 11237c478bd9Sstevel@tonic-gate rp = mcast_bldmrec(CHANGE_TO_INCLUDE, &ilm->ilm_v6addr, flist, 11247c478bd9Sstevel@tonic-gate NULL); 11257c478bd9Sstevel@tonic-gate } 11267c478bd9Sstevel@tonic-gate 11277c478bd9Sstevel@tonic-gate /* 11287c478bd9Sstevel@tonic-gate * Need to set up retransmission state; merge the new info with the 11297c478bd9Sstevel@tonic-gate * current state (which may be null). If the timer is not currently 11307c478bd9Sstevel@tonic-gate * running, start it (need to do a deferred start of the timer as 11317c478bd9Sstevel@tonic-gate * we're currently in the sq). 11327c478bd9Sstevel@tonic-gate */ 11337c478bd9Sstevel@tonic-gate rp = mcast_merge_rtx(ilm, rp, flist); 11347c478bd9Sstevel@tonic-gate ASSERT(ilm->ilm_rtx.rtx_cnt > 0); 11357c478bd9Sstevel@tonic-gate if (ilm->ilm_rtx.rtx_timer == INFINITY) { 11367c478bd9Sstevel@tonic-gate MCAST_RANDOM_DELAY(ilm->ilm_rtx.rtx_timer, 11377c478bd9Sstevel@tonic-gate SEC_TO_MSEC(ICMP6_MAX_HOST_REPORT_DELAY)); 1138*f4b3ec61Sdh mutex_enter(&ipst->ips_mld_timer_lock); 1139*f4b3ec61Sdh ipst->ips_mld_deferred_next = 1140*f4b3ec61Sdh MIN(ipst->ips_mld_deferred_next, ilm->ilm_rtx.rtx_timer); 1141*f4b3ec61Sdh mutex_exit(&ipst->ips_mld_timer_lock); 11427c478bd9Sstevel@tonic-gate } 11437c478bd9Sstevel@tonic-gate 11447c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 11457c478bd9Sstevel@tonic-gate mldv2_sendrpt(ill, rp); 11467c478bd9Sstevel@tonic-gate } 11477c478bd9Sstevel@tonic-gate 11487c478bd9Sstevel@tonic-gate uint_t 11497c478bd9Sstevel@tonic-gate igmp_timeout_handler_per_ill(ill_t *ill, int elapsed) 11507c478bd9Sstevel@tonic-gate { 11517c478bd9Sstevel@tonic-gate uint_t next = INFINITY; 11527c478bd9Sstevel@tonic-gate ilm_t *ilm; 11537c478bd9Sstevel@tonic-gate ipif_t *ipif; 11547c478bd9Sstevel@tonic-gate mrec_t *rp = NULL; 11557c478bd9Sstevel@tonic-gate mrec_t *rtxrp = NULL; 11567c478bd9Sstevel@tonic-gate rtx_state_t *rtxp; 11577c478bd9Sstevel@tonic-gate mcast_record_t rtype; 11587c478bd9Sstevel@tonic-gate 11597c478bd9Sstevel@tonic-gate ASSERT(IAM_WRITER_ILL(ill)); 11607c478bd9Sstevel@tonic-gate 11617c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 11627c478bd9Sstevel@tonic-gate 11637c478bd9Sstevel@tonic-gate /* First check the global timer on this interface */ 11647c478bd9Sstevel@tonic-gate if (ill->ill_global_timer == INFINITY) 11657c478bd9Sstevel@tonic-gate goto per_ilm_timer; 11667c478bd9Sstevel@tonic-gate if (ill->ill_global_timer <= elapsed) { 11677c478bd9Sstevel@tonic-gate ill->ill_global_timer = INFINITY; 11687c478bd9Sstevel@tonic-gate /* 11697c478bd9Sstevel@tonic-gate * Send report for each group on this interface. 11707c478bd9Sstevel@tonic-gate * Since we just set the global timer (received a v3 general 11717c478bd9Sstevel@tonic-gate * query), need to skip the all hosts addr (224.0.0.1), per 11727c478bd9Sstevel@tonic-gate * RFC 3376 section 5. 11737c478bd9Sstevel@tonic-gate */ 11747c478bd9Sstevel@tonic-gate for (ilm = ill->ill_ilm; ilm != NULL; ilm = ilm->ilm_next) { 11757c478bd9Sstevel@tonic-gate if (ilm->ilm_addr == htonl(INADDR_ALLHOSTS_GROUP)) 11767c478bd9Sstevel@tonic-gate continue; 11777c478bd9Sstevel@tonic-gate ASSERT(ilm->ilm_ipif != NULL); 11787c478bd9Sstevel@tonic-gate ilm->ilm_ipif->ipif_igmp_rpt = 11797c478bd9Sstevel@tonic-gate mcast_bldmrec(ilm->ilm_fmode, &ilm->ilm_v6addr, 11807c478bd9Sstevel@tonic-gate ilm->ilm_filter, ilm->ilm_ipif->ipif_igmp_rpt); 11817c478bd9Sstevel@tonic-gate /* 11827c478bd9Sstevel@tonic-gate * Since we're sending a report on this group, okay 11837c478bd9Sstevel@tonic-gate * to delete pending group-specific timers. Note 11847c478bd9Sstevel@tonic-gate * that group-specific retransmit timers still need 11857c478bd9Sstevel@tonic-gate * to be checked in the per_ilm_timer for-loop. 11867c478bd9Sstevel@tonic-gate */ 11877c478bd9Sstevel@tonic-gate ilm->ilm_timer = INFINITY; 11887c478bd9Sstevel@tonic-gate ilm->ilm_state = IGMP_IREPORTEDLAST; 11897c478bd9Sstevel@tonic-gate FREE_SLIST(ilm->ilm_pendsrcs); 11907c478bd9Sstevel@tonic-gate ilm->ilm_pendsrcs = NULL; 11917c478bd9Sstevel@tonic-gate } 11927c478bd9Sstevel@tonic-gate /* 11937c478bd9Sstevel@tonic-gate * We've built per-ipif mrec lists; walk the ill's ipif list 11947c478bd9Sstevel@tonic-gate * and send a report for each ipif that has an mrec list. 11957c478bd9Sstevel@tonic-gate */ 11967c478bd9Sstevel@tonic-gate for (ipif = ill->ill_ipif; ipif != NULL; 11977c478bd9Sstevel@tonic-gate ipif = ipif->ipif_next) { 11987c478bd9Sstevel@tonic-gate if (ipif->ipif_igmp_rpt == NULL) 11997c478bd9Sstevel@tonic-gate continue; 12007c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 12017c478bd9Sstevel@tonic-gate igmpv3_sendrpt(ipif, ipif->ipif_igmp_rpt); 12027c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 12037c478bd9Sstevel@tonic-gate /* mrec list was freed by igmpv3_sendrpt() */ 12047c478bd9Sstevel@tonic-gate ipif->ipif_igmp_rpt = NULL; 12057c478bd9Sstevel@tonic-gate } 12067c478bd9Sstevel@tonic-gate } else { 12077c478bd9Sstevel@tonic-gate ill->ill_global_timer -= elapsed; 12087c478bd9Sstevel@tonic-gate if (ill->ill_global_timer < next) 12097c478bd9Sstevel@tonic-gate next = ill->ill_global_timer; 12107c478bd9Sstevel@tonic-gate } 12117c478bd9Sstevel@tonic-gate 12127c478bd9Sstevel@tonic-gate per_ilm_timer: 12137c478bd9Sstevel@tonic-gate for (ilm = ill->ill_ilm; ilm != NULL; ilm = ilm->ilm_next) { 12147c478bd9Sstevel@tonic-gate if (ilm->ilm_timer == INFINITY) 12157c478bd9Sstevel@tonic-gate goto per_ilm_rtxtimer; 12167c478bd9Sstevel@tonic-gate 12177c478bd9Sstevel@tonic-gate if (ilm->ilm_timer > elapsed) { 12187c478bd9Sstevel@tonic-gate ilm->ilm_timer -= elapsed; 12197c478bd9Sstevel@tonic-gate if (ilm->ilm_timer < next) 12207c478bd9Sstevel@tonic-gate next = ilm->ilm_timer; 12217c478bd9Sstevel@tonic-gate 12227c478bd9Sstevel@tonic-gate if (ip_debug > 1) { 12237c478bd9Sstevel@tonic-gate (void) mi_strlog(ill->ill_rq, 1, SL_TRACE, 12247c478bd9Sstevel@tonic-gate "igmp_timo_hlr 2: ilm_timr %d elap %d " 12257c478bd9Sstevel@tonic-gate "typ %d nxt %d", 12267c478bd9Sstevel@tonic-gate (int)ntohl(ilm->ilm_timer), elapsed, 12277c478bd9Sstevel@tonic-gate (ill->ill_mcast_type), next); 12287c478bd9Sstevel@tonic-gate } 12297c478bd9Sstevel@tonic-gate 12307c478bd9Sstevel@tonic-gate goto per_ilm_rtxtimer; 12317c478bd9Sstevel@tonic-gate } 12327c478bd9Sstevel@tonic-gate 12337c478bd9Sstevel@tonic-gate /* the timer has expired, need to take action */ 12347c478bd9Sstevel@tonic-gate ilm->ilm_timer = INFINITY; 12357c478bd9Sstevel@tonic-gate ilm->ilm_state = IGMP_IREPORTEDLAST; 12367c478bd9Sstevel@tonic-gate if (ill->ill_mcast_type == IGMP_V1_ROUTER) { 12377c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 12387c478bd9Sstevel@tonic-gate igmp_sendpkt(ilm, IGMP_V1_MEMBERSHIP_REPORT, 0); 12397c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 12407c478bd9Sstevel@tonic-gate } else if (ill->ill_mcast_type == IGMP_V2_ROUTER) { 12417c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 12427c478bd9Sstevel@tonic-gate igmp_sendpkt(ilm, IGMP_V2_MEMBERSHIP_REPORT, 0); 12437c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 12447c478bd9Sstevel@tonic-gate } else { 12457c478bd9Sstevel@tonic-gate slist_t *rsp; 12467c478bd9Sstevel@tonic-gate if (!SLIST_IS_EMPTY(ilm->ilm_pendsrcs) && 12477c478bd9Sstevel@tonic-gate (rsp = l_alloc()) != NULL) { 12487c478bd9Sstevel@tonic-gate /* 12497c478bd9Sstevel@tonic-gate * Contents of reply depend on pending 12507c478bd9Sstevel@tonic-gate * requested source list. 12517c478bd9Sstevel@tonic-gate */ 12527c478bd9Sstevel@tonic-gate if (ilm->ilm_fmode == MODE_IS_INCLUDE) { 12537c478bd9Sstevel@tonic-gate l_intersection(ilm->ilm_filter, 12547c478bd9Sstevel@tonic-gate ilm->ilm_pendsrcs, rsp); 12557c478bd9Sstevel@tonic-gate } else { 12567c478bd9Sstevel@tonic-gate l_difference(ilm->ilm_pendsrcs, 12577c478bd9Sstevel@tonic-gate ilm->ilm_filter, rsp); 12587c478bd9Sstevel@tonic-gate } 12597c478bd9Sstevel@tonic-gate FREE_SLIST(ilm->ilm_pendsrcs); 12607c478bd9Sstevel@tonic-gate ilm->ilm_pendsrcs = NULL; 12617c478bd9Sstevel@tonic-gate if (!SLIST_IS_EMPTY(rsp)) 12627c478bd9Sstevel@tonic-gate rp = mcast_bldmrec(MODE_IS_INCLUDE, 12637c478bd9Sstevel@tonic-gate &ilm->ilm_v6addr, rsp, rp); 12647c478bd9Sstevel@tonic-gate FREE_SLIST(rsp); 12657c478bd9Sstevel@tonic-gate } else { 12667c478bd9Sstevel@tonic-gate /* 12677c478bd9Sstevel@tonic-gate * Either the pending request is just group- 12687c478bd9Sstevel@tonic-gate * specific, or we couldn't get the resources 12697c478bd9Sstevel@tonic-gate * (rsp) to build a source-specific reply. 12707c478bd9Sstevel@tonic-gate */ 12717c478bd9Sstevel@tonic-gate rp = mcast_bldmrec(ilm->ilm_fmode, 12727c478bd9Sstevel@tonic-gate &ilm->ilm_v6addr, ilm->ilm_filter, rp); 12737c478bd9Sstevel@tonic-gate } 12747c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 12757c478bd9Sstevel@tonic-gate igmpv3_sendrpt(ill->ill_ipif, rp); 12767c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 12777c478bd9Sstevel@tonic-gate rp = NULL; 12787c478bd9Sstevel@tonic-gate } 12797c478bd9Sstevel@tonic-gate 12807c478bd9Sstevel@tonic-gate if (ip_debug > 1) { 12817c478bd9Sstevel@tonic-gate (void) mi_strlog(ill->ill_rq, 1, SL_TRACE, 12827c478bd9Sstevel@tonic-gate "igmp_timo_hlr 1: ilm_timr %d elap %d " 12837c478bd9Sstevel@tonic-gate "typ %d nxt %d", 12847c478bd9Sstevel@tonic-gate (int)ntohl(ilm->ilm_timer), elapsed, 12857c478bd9Sstevel@tonic-gate (ill->ill_mcast_type), next); 12867c478bd9Sstevel@tonic-gate } 12877c478bd9Sstevel@tonic-gate 12887c478bd9Sstevel@tonic-gate per_ilm_rtxtimer: 12897c478bd9Sstevel@tonic-gate rtxp = &ilm->ilm_rtx; 12907c478bd9Sstevel@tonic-gate 12917c478bd9Sstevel@tonic-gate if (rtxp->rtx_timer == INFINITY) 12927c478bd9Sstevel@tonic-gate continue; 12937c478bd9Sstevel@tonic-gate if (rtxp->rtx_timer > elapsed) { 12947c478bd9Sstevel@tonic-gate rtxp->rtx_timer -= elapsed; 12957c478bd9Sstevel@tonic-gate if (rtxp->rtx_timer < next) 12967c478bd9Sstevel@tonic-gate next = rtxp->rtx_timer; 12977c478bd9Sstevel@tonic-gate continue; 12987c478bd9Sstevel@tonic-gate } 12997c478bd9Sstevel@tonic-gate 13007c478bd9Sstevel@tonic-gate rtxp->rtx_timer = INFINITY; 13017c478bd9Sstevel@tonic-gate ilm->ilm_state = IGMP_IREPORTEDLAST; 13027c478bd9Sstevel@tonic-gate if (ill->ill_mcast_type == IGMP_V1_ROUTER) { 13037c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 13047c478bd9Sstevel@tonic-gate igmp_sendpkt(ilm, IGMP_V1_MEMBERSHIP_REPORT, 0); 13057c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 13067c478bd9Sstevel@tonic-gate continue; 13077c478bd9Sstevel@tonic-gate } else if (ill->ill_mcast_type == IGMP_V2_ROUTER) { 13087c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 13097c478bd9Sstevel@tonic-gate igmp_sendpkt(ilm, IGMP_V2_MEMBERSHIP_REPORT, 0); 13107c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 13117c478bd9Sstevel@tonic-gate continue; 13127c478bd9Sstevel@tonic-gate } 13137c478bd9Sstevel@tonic-gate 13147c478bd9Sstevel@tonic-gate /* 13157c478bd9Sstevel@tonic-gate * The retransmit timer has popped, and our router is 13167c478bd9Sstevel@tonic-gate * IGMPv3. We have to delve into the retransmit state 13177c478bd9Sstevel@tonic-gate * stored in the ilm. 13187c478bd9Sstevel@tonic-gate * 13197c478bd9Sstevel@tonic-gate * Decrement the retransmit count. If the fmode rtx 13207c478bd9Sstevel@tonic-gate * count is active, decrement it, and send a filter 13217c478bd9Sstevel@tonic-gate * mode change report with the ilm's source list. 13227c478bd9Sstevel@tonic-gate * Otherwise, send a source list change report with 13237c478bd9Sstevel@tonic-gate * the current retransmit lists. 13247c478bd9Sstevel@tonic-gate */ 13257c478bd9Sstevel@tonic-gate ASSERT(rtxp->rtx_cnt > 0); 13267c478bd9Sstevel@tonic-gate ASSERT(rtxp->rtx_cnt >= rtxp->rtx_fmode_cnt); 13277c478bd9Sstevel@tonic-gate rtxp->rtx_cnt--; 13287c478bd9Sstevel@tonic-gate if (rtxp->rtx_fmode_cnt > 0) { 13297c478bd9Sstevel@tonic-gate rtxp->rtx_fmode_cnt--; 13307c478bd9Sstevel@tonic-gate rtype = (ilm->ilm_fmode == MODE_IS_INCLUDE) ? 13317c478bd9Sstevel@tonic-gate CHANGE_TO_INCLUDE : CHANGE_TO_EXCLUDE; 13327c478bd9Sstevel@tonic-gate rtxrp = mcast_bldmrec(rtype, &ilm->ilm_v6addr, 13337c478bd9Sstevel@tonic-gate ilm->ilm_filter, rtxrp); 13347c478bd9Sstevel@tonic-gate } else { 13357c478bd9Sstevel@tonic-gate rtxrp = mcast_bldmrec(ALLOW_NEW_SOURCES, 13367c478bd9Sstevel@tonic-gate &ilm->ilm_v6addr, rtxp->rtx_allow, rtxrp); 13377c478bd9Sstevel@tonic-gate rtxrp = mcast_bldmrec(BLOCK_OLD_SOURCES, 13387c478bd9Sstevel@tonic-gate &ilm->ilm_v6addr, rtxp->rtx_block, rtxrp); 13397c478bd9Sstevel@tonic-gate } 13407c478bd9Sstevel@tonic-gate if (rtxp->rtx_cnt > 0) { 13417c478bd9Sstevel@tonic-gate MCAST_RANDOM_DELAY(rtxp->rtx_timer, 13427c478bd9Sstevel@tonic-gate SEC_TO_MSEC(IGMP_MAX_HOST_REPORT_DELAY)); 13437c478bd9Sstevel@tonic-gate if (rtxp->rtx_timer < next) 13447c478bd9Sstevel@tonic-gate next = rtxp->rtx_timer; 13457c478bd9Sstevel@tonic-gate } else { 13467c478bd9Sstevel@tonic-gate CLEAR_SLIST(rtxp->rtx_allow); 13477c478bd9Sstevel@tonic-gate CLEAR_SLIST(rtxp->rtx_block); 13487c478bd9Sstevel@tonic-gate } 13497c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 13507c478bd9Sstevel@tonic-gate igmpv3_sendrpt(ilm->ilm_ipif, rtxrp); 13517c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 13527c478bd9Sstevel@tonic-gate rtxrp = NULL; 13537c478bd9Sstevel@tonic-gate } 13547c478bd9Sstevel@tonic-gate 13557c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 13567c478bd9Sstevel@tonic-gate 13577c478bd9Sstevel@tonic-gate return (next); 13587c478bd9Sstevel@tonic-gate } 13597c478bd9Sstevel@tonic-gate 13607c478bd9Sstevel@tonic-gate /* 13617c478bd9Sstevel@tonic-gate * igmp_timeout_handler: 13627c478bd9Sstevel@tonic-gate * Called when there are timeout events, every next * TMEOUT_INTERVAL (tick). 13637c478bd9Sstevel@tonic-gate * Returns number of ticks to next event (or 0 if none). 13647c478bd9Sstevel@tonic-gate * 13657c478bd9Sstevel@tonic-gate * As part of multicast join and leave igmp we may need to send out an 13667c478bd9Sstevel@tonic-gate * igmp request. The igmp related state variables in the ilm are protected 13677c478bd9Sstevel@tonic-gate * by ill_lock. A single global igmp timer is used to track igmp timeouts. 13687c478bd9Sstevel@tonic-gate * igmp_timer_lock protects the global igmp_timeout_id. igmp_start_timers 13697c478bd9Sstevel@tonic-gate * starts the igmp timer if needed. It serializes multiple threads trying to 13707c478bd9Sstevel@tonic-gate * simultaneously start the timer using the igmp_timer_setter_active flag. 13717c478bd9Sstevel@tonic-gate * 13727c478bd9Sstevel@tonic-gate * igmp_input() receives igmp queries and responds to the queries 13737c478bd9Sstevel@tonic-gate * in a delayed fashion by posting a timer i.e. it calls igmp_start_timers(). 13747c478bd9Sstevel@tonic-gate * Later the igmp_timer fires, the timeout handler igmp_timerout_handler() 13757c478bd9Sstevel@tonic-gate * performs the action exclusively after entering each ill's ipsq as writer. 13767c478bd9Sstevel@tonic-gate * The actual igmp timeout handler needs to run in the ipsq since it has to 13777c478bd9Sstevel@tonic-gate * access the ilm's and we don't want another exclusive operation like 13787c478bd9Sstevel@tonic-gate * say an IPMP failover to be simultaneously moving the ilms from one ill to 13797c478bd9Sstevel@tonic-gate * another. 13807c478bd9Sstevel@tonic-gate * 13817c478bd9Sstevel@tonic-gate * The igmp_slowtimeo() function is called thru another timer. 13827c478bd9Sstevel@tonic-gate * igmp_slowtimeout_lock protects the igmp_slowtimeout_id 13837c478bd9Sstevel@tonic-gate */ 13847c478bd9Sstevel@tonic-gate void 13857c478bd9Sstevel@tonic-gate igmp_timeout_handler(void *arg) 13867c478bd9Sstevel@tonic-gate { 13877c478bd9Sstevel@tonic-gate ill_t *ill; 13887c478bd9Sstevel@tonic-gate int elapsed; /* Since last call */ 13897c478bd9Sstevel@tonic-gate uint_t global_next = INFINITY; 13907c478bd9Sstevel@tonic-gate uint_t next; 13917c478bd9Sstevel@tonic-gate ill_walk_context_t ctx; 13927c478bd9Sstevel@tonic-gate boolean_t success; 1393*f4b3ec61Sdh ip_stack_t *ipst = (ip_stack_t *)arg; 1394*f4b3ec61Sdh 1395*f4b3ec61Sdh ASSERT(arg != NULL); 1396*f4b3ec61Sdh mutex_enter(&ipst->ips_igmp_timer_lock); 1397*f4b3ec61Sdh ASSERT(ipst->ips_igmp_timeout_id != 0); 1398*f4b3ec61Sdh ipst->ips_igmp_timer_fired_last = ddi_get_lbolt(); 1399*f4b3ec61Sdh elapsed = ipst->ips_igmp_time_to_next; 1400*f4b3ec61Sdh ipst->ips_igmp_time_to_next = 0; 1401*f4b3ec61Sdh mutex_exit(&ipst->ips_igmp_timer_lock); 1402*f4b3ec61Sdh 1403*f4b3ec61Sdh rw_enter(&ipst->ips_ill_g_lock, RW_READER); 1404*f4b3ec61Sdh ill = ILL_START_WALK_V4(&ctx, ipst); 14057c478bd9Sstevel@tonic-gate for (; ill != NULL; ill = ill_next(&ctx, ill)) { 14067c478bd9Sstevel@tonic-gate ASSERT(!ill->ill_isv6); 14077c478bd9Sstevel@tonic-gate /* 14087c478bd9Sstevel@tonic-gate * We may not be able to refhold the ill if the ill/ipif 14097c478bd9Sstevel@tonic-gate * is changing. But we need to make sure that the ill will 14107c478bd9Sstevel@tonic-gate * not vanish. So we just bump up the ill_waiter count. 14117c478bd9Sstevel@tonic-gate */ 14127c478bd9Sstevel@tonic-gate if (!ill_waiter_inc(ill)) 14137c478bd9Sstevel@tonic-gate continue; 1414*f4b3ec61Sdh rw_exit(&ipst->ips_ill_g_lock); 14157c478bd9Sstevel@tonic-gate success = ipsq_enter(ill, B_TRUE); 14167c478bd9Sstevel@tonic-gate if (success) { 14177c478bd9Sstevel@tonic-gate next = igmp_timeout_handler_per_ill(ill, elapsed); 14187c478bd9Sstevel@tonic-gate if (next < global_next) 14197c478bd9Sstevel@tonic-gate global_next = next; 14207c478bd9Sstevel@tonic-gate ipsq_exit(ill->ill_phyint->phyint_ipsq, B_FALSE, 14217c478bd9Sstevel@tonic-gate B_TRUE); 14227c478bd9Sstevel@tonic-gate } 1423*f4b3ec61Sdh rw_enter(&ipst->ips_ill_g_lock, RW_READER); 14247c478bd9Sstevel@tonic-gate ill_waiter_dcr(ill); 14257c478bd9Sstevel@tonic-gate } 1426*f4b3ec61Sdh rw_exit(&ipst->ips_ill_g_lock); 14277c478bd9Sstevel@tonic-gate 1428*f4b3ec61Sdh mutex_enter(&ipst->ips_igmp_timer_lock); 1429*f4b3ec61Sdh ASSERT(ipst->ips_igmp_timeout_id != 0); 1430*f4b3ec61Sdh ipst->ips_igmp_timeout_id = 0; 1431*f4b3ec61Sdh mutex_exit(&ipst->ips_igmp_timer_lock); 14327c478bd9Sstevel@tonic-gate 14337c478bd9Sstevel@tonic-gate if (global_next != INFINITY) 1434*f4b3ec61Sdh igmp_start_timers(global_next, ipst); 14357c478bd9Sstevel@tonic-gate } 14367c478bd9Sstevel@tonic-gate 14377c478bd9Sstevel@tonic-gate /* 14387c478bd9Sstevel@tonic-gate * mld_timeout_handler: 14397c478bd9Sstevel@tonic-gate * Called when there are timeout events, every next (tick). 14407c478bd9Sstevel@tonic-gate * Returns number of ticks to next event (or 0 if none). 14417c478bd9Sstevel@tonic-gate */ 14427c478bd9Sstevel@tonic-gate /* ARGSUSED */ 14437c478bd9Sstevel@tonic-gate uint_t 14447c478bd9Sstevel@tonic-gate mld_timeout_handler_per_ill(ill_t *ill, int elapsed) 14457c478bd9Sstevel@tonic-gate { 14467c478bd9Sstevel@tonic-gate ilm_t *ilm; 14477c478bd9Sstevel@tonic-gate uint_t next = INFINITY; 14487c478bd9Sstevel@tonic-gate mrec_t *rp, *rtxrp; 14497c478bd9Sstevel@tonic-gate rtx_state_t *rtxp; 14507c478bd9Sstevel@tonic-gate mcast_record_t rtype; 14517c478bd9Sstevel@tonic-gate 14527c478bd9Sstevel@tonic-gate ASSERT(IAM_WRITER_ILL(ill)); 14537c478bd9Sstevel@tonic-gate 14547c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 14557c478bd9Sstevel@tonic-gate 14567c478bd9Sstevel@tonic-gate /* 14577c478bd9Sstevel@tonic-gate * First check the global timer on this interface; the global timer 14587c478bd9Sstevel@tonic-gate * is not used for MLDv1, so if it's set we can assume we're v2. 14597c478bd9Sstevel@tonic-gate */ 14607c478bd9Sstevel@tonic-gate if (ill->ill_global_timer == INFINITY) 14617c478bd9Sstevel@tonic-gate goto per_ilm_timer; 14627c478bd9Sstevel@tonic-gate if (ill->ill_global_timer <= elapsed) { 14637c478bd9Sstevel@tonic-gate ill->ill_global_timer = INFINITY; 14647c478bd9Sstevel@tonic-gate /* 14657c478bd9Sstevel@tonic-gate * Send report for each group on this interface. 14667c478bd9Sstevel@tonic-gate * Since we just set the global timer (received a v2 general 14677c478bd9Sstevel@tonic-gate * query), need to skip the all hosts addr (ff02::1), per 14687c478bd9Sstevel@tonic-gate * RFC 3810 section 6. 14697c478bd9Sstevel@tonic-gate */ 14707c478bd9Sstevel@tonic-gate rp = NULL; 14717c478bd9Sstevel@tonic-gate for (ilm = ill->ill_ilm; ilm != NULL; ilm = ilm->ilm_next) { 14727c478bd9Sstevel@tonic-gate if (IN6_ARE_ADDR_EQUAL(&ilm->ilm_v6addr, 14737c478bd9Sstevel@tonic-gate &ipv6_all_hosts_mcast)) 14747c478bd9Sstevel@tonic-gate continue; 14757c478bd9Sstevel@tonic-gate rp = mcast_bldmrec(ilm->ilm_fmode, &ilm->ilm_v6addr, 14767c478bd9Sstevel@tonic-gate ilm->ilm_filter, rp); 14777c478bd9Sstevel@tonic-gate /* 14787c478bd9Sstevel@tonic-gate * Since we're sending a report on this group, okay 14797c478bd9Sstevel@tonic-gate * to delete pending group-specific timers. Note 14807c478bd9Sstevel@tonic-gate * that group-specific retransmit timers still need 14817c478bd9Sstevel@tonic-gate * to be checked in the per_ilm_timer for-loop. 14827c478bd9Sstevel@tonic-gate */ 14837c478bd9Sstevel@tonic-gate ilm->ilm_timer = INFINITY; 14847c478bd9Sstevel@tonic-gate ilm->ilm_state = IGMP_IREPORTEDLAST; 14857c478bd9Sstevel@tonic-gate FREE_SLIST(ilm->ilm_pendsrcs); 14867c478bd9Sstevel@tonic-gate ilm->ilm_pendsrcs = NULL; 14877c478bd9Sstevel@tonic-gate } 14887c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 14897c478bd9Sstevel@tonic-gate mldv2_sendrpt(ill, rp); 14907c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 14917c478bd9Sstevel@tonic-gate } else { 14927c478bd9Sstevel@tonic-gate ill->ill_global_timer -= elapsed; 14937c478bd9Sstevel@tonic-gate if (ill->ill_global_timer < next) 14947c478bd9Sstevel@tonic-gate next = ill->ill_global_timer; 14957c478bd9Sstevel@tonic-gate } 14967c478bd9Sstevel@tonic-gate 14977c478bd9Sstevel@tonic-gate per_ilm_timer: 14987c478bd9Sstevel@tonic-gate rp = rtxrp = NULL; 14997c478bd9Sstevel@tonic-gate for (ilm = ill->ill_ilm; ilm != NULL; ilm = ilm->ilm_next) { 15007c478bd9Sstevel@tonic-gate if (ilm->ilm_timer == INFINITY) 15017c478bd9Sstevel@tonic-gate goto per_ilm_rtxtimer; 15027c478bd9Sstevel@tonic-gate 15037c478bd9Sstevel@tonic-gate if (ilm->ilm_timer > elapsed) { 15047c478bd9Sstevel@tonic-gate ilm->ilm_timer -= elapsed; 15057c478bd9Sstevel@tonic-gate if (ilm->ilm_timer < next) 15067c478bd9Sstevel@tonic-gate next = ilm->ilm_timer; 15077c478bd9Sstevel@tonic-gate 15087c478bd9Sstevel@tonic-gate if (ip_debug > 1) { 15097c478bd9Sstevel@tonic-gate (void) mi_strlog(ill->ill_rq, 1, SL_TRACE, 15107c478bd9Sstevel@tonic-gate "igmp_timo_hlr 2: ilm_timr" 15117c478bd9Sstevel@tonic-gate " %d elap %d typ %d nxt %d", 15127c478bd9Sstevel@tonic-gate (int)ntohl(ilm->ilm_timer), elapsed, 15137c478bd9Sstevel@tonic-gate (ill->ill_mcast_type), next); 15147c478bd9Sstevel@tonic-gate } 15157c478bd9Sstevel@tonic-gate 15167c478bd9Sstevel@tonic-gate goto per_ilm_rtxtimer; 15177c478bd9Sstevel@tonic-gate } 15187c478bd9Sstevel@tonic-gate 15197c478bd9Sstevel@tonic-gate /* the timer has expired, need to take action */ 15207c478bd9Sstevel@tonic-gate ilm->ilm_timer = INFINITY; 15217c478bd9Sstevel@tonic-gate ilm->ilm_state = IGMP_IREPORTEDLAST; 15227c478bd9Sstevel@tonic-gate if (ill->ill_mcast_type == MLD_V1_ROUTER) { 15237c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 15247c478bd9Sstevel@tonic-gate mld_sendpkt(ilm, MLD_LISTENER_REPORT, NULL); 15257c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 15267c478bd9Sstevel@tonic-gate } else { 15277c478bd9Sstevel@tonic-gate slist_t *rsp; 15287c478bd9Sstevel@tonic-gate if (!SLIST_IS_EMPTY(ilm->ilm_pendsrcs) && 15297c478bd9Sstevel@tonic-gate (rsp = l_alloc()) != NULL) { 15307c478bd9Sstevel@tonic-gate /* 15317c478bd9Sstevel@tonic-gate * Contents of reply depend on pending 15327c478bd9Sstevel@tonic-gate * requested source list. 15337c478bd9Sstevel@tonic-gate */ 15347c478bd9Sstevel@tonic-gate if (ilm->ilm_fmode == MODE_IS_INCLUDE) { 15357c478bd9Sstevel@tonic-gate l_intersection(ilm->ilm_filter, 15367c478bd9Sstevel@tonic-gate ilm->ilm_pendsrcs, rsp); 15377c478bd9Sstevel@tonic-gate } else { 15387c478bd9Sstevel@tonic-gate l_difference(ilm->ilm_pendsrcs, 15397c478bd9Sstevel@tonic-gate ilm->ilm_filter, rsp); 15407c478bd9Sstevel@tonic-gate } 15417c478bd9Sstevel@tonic-gate FREE_SLIST(ilm->ilm_pendsrcs); 15427c478bd9Sstevel@tonic-gate ilm->ilm_pendsrcs = NULL; 15437c478bd9Sstevel@tonic-gate if (!SLIST_IS_EMPTY(rsp)) 15447c478bd9Sstevel@tonic-gate rp = mcast_bldmrec(MODE_IS_INCLUDE, 15457c478bd9Sstevel@tonic-gate &ilm->ilm_v6addr, rsp, rp); 15467c478bd9Sstevel@tonic-gate FREE_SLIST(rsp); 15477c478bd9Sstevel@tonic-gate } else { 15487c478bd9Sstevel@tonic-gate rp = mcast_bldmrec(ilm->ilm_fmode, 15497c478bd9Sstevel@tonic-gate &ilm->ilm_v6addr, ilm->ilm_filter, rp); 15507c478bd9Sstevel@tonic-gate } 15517c478bd9Sstevel@tonic-gate } 15527c478bd9Sstevel@tonic-gate 15537c478bd9Sstevel@tonic-gate if (ip_debug > 1) { 15547c478bd9Sstevel@tonic-gate (void) mi_strlog(ill->ill_rq, 1, SL_TRACE, 15557c478bd9Sstevel@tonic-gate "igmp_timo_hlr 1: ilm_timr %d elap %d " 15567c478bd9Sstevel@tonic-gate "typ %d nxt %d", 15577c478bd9Sstevel@tonic-gate (int)ntohl(ilm->ilm_timer), elapsed, 15587c478bd9Sstevel@tonic-gate (ill->ill_mcast_type), next); 15597c478bd9Sstevel@tonic-gate } 15607c478bd9Sstevel@tonic-gate 15617c478bd9Sstevel@tonic-gate per_ilm_rtxtimer: 15627c478bd9Sstevel@tonic-gate rtxp = &ilm->ilm_rtx; 15637c478bd9Sstevel@tonic-gate 15647c478bd9Sstevel@tonic-gate if (rtxp->rtx_timer == INFINITY) 15657c478bd9Sstevel@tonic-gate continue; 15667c478bd9Sstevel@tonic-gate if (rtxp->rtx_timer > elapsed) { 15677c478bd9Sstevel@tonic-gate rtxp->rtx_timer -= elapsed; 15687c478bd9Sstevel@tonic-gate if (rtxp->rtx_timer < next) 15697c478bd9Sstevel@tonic-gate next = rtxp->rtx_timer; 15707c478bd9Sstevel@tonic-gate continue; 15717c478bd9Sstevel@tonic-gate } 15727c478bd9Sstevel@tonic-gate 15737c478bd9Sstevel@tonic-gate rtxp->rtx_timer = INFINITY; 15747c478bd9Sstevel@tonic-gate ilm->ilm_state = IGMP_IREPORTEDLAST; 15757c478bd9Sstevel@tonic-gate if (ill->ill_mcast_type == MLD_V1_ROUTER) { 15767c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 15777c478bd9Sstevel@tonic-gate mld_sendpkt(ilm, MLD_LISTENER_REPORT, NULL); 15787c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 15797c478bd9Sstevel@tonic-gate continue; 15807c478bd9Sstevel@tonic-gate } 15817c478bd9Sstevel@tonic-gate 15827c478bd9Sstevel@tonic-gate /* 15837c478bd9Sstevel@tonic-gate * The retransmit timer has popped, and our router is 15847c478bd9Sstevel@tonic-gate * MLDv2. We have to delve into the retransmit state 15857c478bd9Sstevel@tonic-gate * stored in the ilm. 15867c478bd9Sstevel@tonic-gate * 15877c478bd9Sstevel@tonic-gate * Decrement the retransmit count. If the fmode rtx 15887c478bd9Sstevel@tonic-gate * count is active, decrement it, and send a filter 15897c478bd9Sstevel@tonic-gate * mode change report with the ilm's source list. 15907c478bd9Sstevel@tonic-gate * Otherwise, send a source list change report with 15917c478bd9Sstevel@tonic-gate * the current retransmit lists. 15927c478bd9Sstevel@tonic-gate */ 15937c478bd9Sstevel@tonic-gate ASSERT(rtxp->rtx_cnt > 0); 15947c478bd9Sstevel@tonic-gate ASSERT(rtxp->rtx_cnt >= rtxp->rtx_fmode_cnt); 15957c478bd9Sstevel@tonic-gate rtxp->rtx_cnt--; 15967c478bd9Sstevel@tonic-gate if (rtxp->rtx_fmode_cnt > 0) { 15977c478bd9Sstevel@tonic-gate rtxp->rtx_fmode_cnt--; 15987c478bd9Sstevel@tonic-gate rtype = (ilm->ilm_fmode == MODE_IS_INCLUDE) ? 15997c478bd9Sstevel@tonic-gate CHANGE_TO_INCLUDE : CHANGE_TO_EXCLUDE; 16007c478bd9Sstevel@tonic-gate rtxrp = mcast_bldmrec(rtype, &ilm->ilm_v6addr, 16017c478bd9Sstevel@tonic-gate ilm->ilm_filter, rtxrp); 16027c478bd9Sstevel@tonic-gate } else { 16037c478bd9Sstevel@tonic-gate rtxrp = mcast_bldmrec(ALLOW_NEW_SOURCES, 16047c478bd9Sstevel@tonic-gate &ilm->ilm_v6addr, rtxp->rtx_allow, rtxrp); 16057c478bd9Sstevel@tonic-gate rtxrp = mcast_bldmrec(BLOCK_OLD_SOURCES, 16067c478bd9Sstevel@tonic-gate &ilm->ilm_v6addr, rtxp->rtx_block, rtxrp); 16077c478bd9Sstevel@tonic-gate } 16087c478bd9Sstevel@tonic-gate if (rtxp->rtx_cnt > 0) { 16097c478bd9Sstevel@tonic-gate MCAST_RANDOM_DELAY(rtxp->rtx_timer, 16107c478bd9Sstevel@tonic-gate SEC_TO_MSEC(ICMP6_MAX_HOST_REPORT_DELAY)); 16117c478bd9Sstevel@tonic-gate if (rtxp->rtx_timer < next) 16127c478bd9Sstevel@tonic-gate next = rtxp->rtx_timer; 16137c478bd9Sstevel@tonic-gate } else { 16147c478bd9Sstevel@tonic-gate CLEAR_SLIST(rtxp->rtx_allow); 16157c478bd9Sstevel@tonic-gate CLEAR_SLIST(rtxp->rtx_block); 16167c478bd9Sstevel@tonic-gate } 16177c478bd9Sstevel@tonic-gate } 16187c478bd9Sstevel@tonic-gate 16197c478bd9Sstevel@tonic-gate if (ill->ill_mcast_type == MLD_V2_ROUTER) { 16207c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 16217c478bd9Sstevel@tonic-gate mldv2_sendrpt(ill, rp); 16227c478bd9Sstevel@tonic-gate mldv2_sendrpt(ill, rtxrp); 16237c478bd9Sstevel@tonic-gate return (next); 16247c478bd9Sstevel@tonic-gate } 16257c478bd9Sstevel@tonic-gate 16267c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 16277c478bd9Sstevel@tonic-gate 16287c478bd9Sstevel@tonic-gate return (next); 16297c478bd9Sstevel@tonic-gate } 16307c478bd9Sstevel@tonic-gate 16317c478bd9Sstevel@tonic-gate /* 16327c478bd9Sstevel@tonic-gate * mld_timeout_handler: 16337c478bd9Sstevel@tonic-gate * Called when there are timeout events, every next * TMEOUT_INTERVAL (tick). 16347c478bd9Sstevel@tonic-gate * Returns number of ticks to next event (or 0 if none). 16357c478bd9Sstevel@tonic-gate * MT issues are same as igmp_timeout_handler 16367c478bd9Sstevel@tonic-gate */ 16377c478bd9Sstevel@tonic-gate void 16387c478bd9Sstevel@tonic-gate mld_timeout_handler(void *arg) 16397c478bd9Sstevel@tonic-gate { 16407c478bd9Sstevel@tonic-gate ill_t *ill; 16417c478bd9Sstevel@tonic-gate int elapsed; /* Since last call */ 16427c478bd9Sstevel@tonic-gate uint_t global_next = INFINITY; 16437c478bd9Sstevel@tonic-gate uint_t next; 16447c478bd9Sstevel@tonic-gate ill_walk_context_t ctx; 16457c478bd9Sstevel@tonic-gate boolean_t success; 1646*f4b3ec61Sdh ip_stack_t *ipst = (ip_stack_t *)arg; 1647*f4b3ec61Sdh 1648*f4b3ec61Sdh ASSERT(arg != NULL); 1649*f4b3ec61Sdh mutex_enter(&ipst->ips_mld_timer_lock); 1650*f4b3ec61Sdh ASSERT(ipst->ips_mld_timeout_id != 0); 1651*f4b3ec61Sdh ipst->ips_mld_timer_fired_last = ddi_get_lbolt(); 1652*f4b3ec61Sdh elapsed = ipst->ips_mld_time_to_next; 1653*f4b3ec61Sdh ipst->ips_mld_time_to_next = 0; 1654*f4b3ec61Sdh mutex_exit(&ipst->ips_mld_timer_lock); 1655*f4b3ec61Sdh 1656*f4b3ec61Sdh rw_enter(&ipst->ips_ill_g_lock, RW_READER); 1657*f4b3ec61Sdh ill = ILL_START_WALK_V6(&ctx, ipst); 16587c478bd9Sstevel@tonic-gate for (; ill != NULL; ill = ill_next(&ctx, ill)) { 16597c478bd9Sstevel@tonic-gate ASSERT(ill->ill_isv6); 16607c478bd9Sstevel@tonic-gate /* 16617c478bd9Sstevel@tonic-gate * We may not be able to refhold the ill if the ill/ipif 16627c478bd9Sstevel@tonic-gate * is changing. But we need to make sure that the ill will 16637c478bd9Sstevel@tonic-gate * not vanish. So we just bump up the ill_waiter count. 16647c478bd9Sstevel@tonic-gate */ 16657c478bd9Sstevel@tonic-gate if (!ill_waiter_inc(ill)) 16667c478bd9Sstevel@tonic-gate continue; 1667*f4b3ec61Sdh rw_exit(&ipst->ips_ill_g_lock); 16687c478bd9Sstevel@tonic-gate success = ipsq_enter(ill, B_TRUE); 16697c478bd9Sstevel@tonic-gate if (success) { 16707c478bd9Sstevel@tonic-gate next = mld_timeout_handler_per_ill(ill, elapsed); 16717c478bd9Sstevel@tonic-gate if (next < global_next) 16727c478bd9Sstevel@tonic-gate global_next = next; 16737c478bd9Sstevel@tonic-gate ipsq_exit(ill->ill_phyint->phyint_ipsq, B_TRUE, 16747c478bd9Sstevel@tonic-gate B_FALSE); 16757c478bd9Sstevel@tonic-gate } 1676*f4b3ec61Sdh rw_enter(&ipst->ips_ill_g_lock, RW_READER); 16777c478bd9Sstevel@tonic-gate ill_waiter_dcr(ill); 16787c478bd9Sstevel@tonic-gate } 1679*f4b3ec61Sdh rw_exit(&ipst->ips_ill_g_lock); 16807c478bd9Sstevel@tonic-gate 1681*f4b3ec61Sdh mutex_enter(&ipst->ips_mld_timer_lock); 1682*f4b3ec61Sdh ASSERT(ipst->ips_mld_timeout_id != 0); 1683*f4b3ec61Sdh ipst->ips_mld_timeout_id = 0; 1684*f4b3ec61Sdh mutex_exit(&ipst->ips_mld_timer_lock); 16857c478bd9Sstevel@tonic-gate 16867c478bd9Sstevel@tonic-gate if (global_next != INFINITY) 1687*f4b3ec61Sdh mld_start_timers(global_next, ipst); 16887c478bd9Sstevel@tonic-gate } 16897c478bd9Sstevel@tonic-gate 16907c478bd9Sstevel@tonic-gate /* 16917c478bd9Sstevel@tonic-gate * Calculate the Older Version Querier Present timeout value, in number 16927c478bd9Sstevel@tonic-gate * of slowtimo intervals, for the given ill. 16937c478bd9Sstevel@tonic-gate */ 16947c478bd9Sstevel@tonic-gate #define OVQP(ill) \ 16957c478bd9Sstevel@tonic-gate ((1000 * (((ill)->ill_mcast_rv * (ill)->ill_mcast_qi) \ 16967c478bd9Sstevel@tonic-gate + MCAST_QUERY_RESP_INTERVAL)) / MCAST_SLOWTIMO_INTERVAL) 16977c478bd9Sstevel@tonic-gate 16987c478bd9Sstevel@tonic-gate /* 16997c478bd9Sstevel@tonic-gate * igmp_slowtimo: 17007c478bd9Sstevel@tonic-gate * - Resets to new router if we didnt we hear from the router 17017c478bd9Sstevel@tonic-gate * in IGMP_AGE_THRESHOLD seconds. 17027c478bd9Sstevel@tonic-gate * - Resets slowtimeout. 17037c478bd9Sstevel@tonic-gate */ 17047c478bd9Sstevel@tonic-gate void 17057c478bd9Sstevel@tonic-gate igmp_slowtimo(void *arg) 17067c478bd9Sstevel@tonic-gate { 17077c478bd9Sstevel@tonic-gate ill_t *ill; 17087c478bd9Sstevel@tonic-gate ill_if_t *ifp; 17097c478bd9Sstevel@tonic-gate avl_tree_t *avl_tree; 1710*f4b3ec61Sdh ip_stack_t *ipst = (ip_stack_t *)arg; 17117c478bd9Sstevel@tonic-gate 1712*f4b3ec61Sdh ASSERT(arg != NULL); 17137c478bd9Sstevel@tonic-gate /* Hold the ill_g_lock so that we can safely walk the ill list */ 1714*f4b3ec61Sdh rw_enter(&ipst->ips_ill_g_lock, RW_READER); 17157c478bd9Sstevel@tonic-gate 17167c478bd9Sstevel@tonic-gate /* 17177c478bd9Sstevel@tonic-gate * The ill_if_t list is circular, hence the odd loop parameters. 17187c478bd9Sstevel@tonic-gate * 17197c478bd9Sstevel@tonic-gate * We can't use the ILL_START_WALK and ill_next() wrappers for this 17207c478bd9Sstevel@tonic-gate * walk, as we need to check the illif_mcast_* fields in the ill_if_t 17217c478bd9Sstevel@tonic-gate * structure (allowing us to skip if none of the instances have timers 17227c478bd9Sstevel@tonic-gate * running). 17237c478bd9Sstevel@tonic-gate */ 1724*f4b3ec61Sdh for (ifp = IP_V4_ILL_G_LIST(ipst); 1725*f4b3ec61Sdh ifp != (ill_if_t *)&IP_V4_ILL_G_LIST(ipst); 17267c478bd9Sstevel@tonic-gate ifp = ifp->illif_next) { 17277c478bd9Sstevel@tonic-gate /* 17287c478bd9Sstevel@tonic-gate * illif_mcast_v[12] are set using atomics. If an ill hears 17297c478bd9Sstevel@tonic-gate * a V1 or V2 query now and we miss seeing the count now, 17307c478bd9Sstevel@tonic-gate * we will see it the next time igmp_slowtimo is called. 17317c478bd9Sstevel@tonic-gate */ 17327c478bd9Sstevel@tonic-gate if (ifp->illif_mcast_v1 == 0 && ifp->illif_mcast_v2 == 0) 17337c478bd9Sstevel@tonic-gate continue; 17347c478bd9Sstevel@tonic-gate 17357c478bd9Sstevel@tonic-gate avl_tree = &ifp->illif_avl_by_ppa; 17367c478bd9Sstevel@tonic-gate for (ill = avl_first(avl_tree); ill != NULL; 17377c478bd9Sstevel@tonic-gate ill = avl_walk(avl_tree, ill, AVL_AFTER)) { 17387c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 17397c478bd9Sstevel@tonic-gate if (ill->ill_mcast_v1_tset == 1) 17407c478bd9Sstevel@tonic-gate ill->ill_mcast_v1_time++; 17417c478bd9Sstevel@tonic-gate if (ill->ill_mcast_v2_tset == 1) 17427c478bd9Sstevel@tonic-gate ill->ill_mcast_v2_time++; 17437c478bd9Sstevel@tonic-gate if (ill->ill_mcast_type == IGMP_V1_ROUTER) { 17447c478bd9Sstevel@tonic-gate if (ill->ill_mcast_v1_time >= OVQP(ill)) { 17457c478bd9Sstevel@tonic-gate if (ill->ill_mcast_v2_tset > 0) { 17467c478bd9Sstevel@tonic-gate ip1dbg(("V1 query timer " 17477c478bd9Sstevel@tonic-gate "expired on %s; switching " 17487c478bd9Sstevel@tonic-gate "mode to IGMP_V2\n", 17497c478bd9Sstevel@tonic-gate ill->ill_name)); 17507c478bd9Sstevel@tonic-gate ill->ill_mcast_type = 17517c478bd9Sstevel@tonic-gate IGMP_V2_ROUTER; 17527c478bd9Sstevel@tonic-gate } else { 17537c478bd9Sstevel@tonic-gate ip1dbg(("V1 query timer " 17547c478bd9Sstevel@tonic-gate "expired on %s; switching " 17557c478bd9Sstevel@tonic-gate "mode to IGMP_V3\n", 17567c478bd9Sstevel@tonic-gate ill->ill_name)); 17577c478bd9Sstevel@tonic-gate ill->ill_mcast_type = 17587c478bd9Sstevel@tonic-gate IGMP_V3_ROUTER; 17597c478bd9Sstevel@tonic-gate } 17607c478bd9Sstevel@tonic-gate ill->ill_mcast_v1_time = 0; 17617c478bd9Sstevel@tonic-gate ill->ill_mcast_v1_tset = 0; 17627c478bd9Sstevel@tonic-gate atomic_add_16(&ifp->illif_mcast_v1, -1); 17637c478bd9Sstevel@tonic-gate } 17647c478bd9Sstevel@tonic-gate } 17657c478bd9Sstevel@tonic-gate if (ill->ill_mcast_type == IGMP_V2_ROUTER) { 17667c478bd9Sstevel@tonic-gate if (ill->ill_mcast_v2_time >= OVQP(ill)) { 17677c478bd9Sstevel@tonic-gate ip1dbg(("V2 query timer expired on " 17687c478bd9Sstevel@tonic-gate "%s; switching mode to IGMP_V3\n", 17697c478bd9Sstevel@tonic-gate ill->ill_name)); 17707c478bd9Sstevel@tonic-gate ill->ill_mcast_type = IGMP_V3_ROUTER; 17717c478bd9Sstevel@tonic-gate ill->ill_mcast_v2_time = 0; 17727c478bd9Sstevel@tonic-gate ill->ill_mcast_v2_tset = 0; 17737c478bd9Sstevel@tonic-gate atomic_add_16(&ifp->illif_mcast_v2, -1); 17747c478bd9Sstevel@tonic-gate } 17757c478bd9Sstevel@tonic-gate } 17767c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 17777c478bd9Sstevel@tonic-gate } 17787c478bd9Sstevel@tonic-gate 17797c478bd9Sstevel@tonic-gate } 1780*f4b3ec61Sdh rw_exit(&ipst->ips_ill_g_lock); 1781*f4b3ec61Sdh mutex_enter(&ipst->ips_igmp_slowtimeout_lock); 1782*f4b3ec61Sdh ipst->ips_igmp_slowtimeout_id = timeout(igmp_slowtimo, (void *)ipst, 17837c478bd9Sstevel@tonic-gate MSEC_TO_TICK(MCAST_SLOWTIMO_INTERVAL)); 1784*f4b3ec61Sdh mutex_exit(&ipst->ips_igmp_slowtimeout_lock); 17857c478bd9Sstevel@tonic-gate } 17867c478bd9Sstevel@tonic-gate 17877c478bd9Sstevel@tonic-gate /* 17887c478bd9Sstevel@tonic-gate * mld_slowtimo: 17897c478bd9Sstevel@tonic-gate * - Resets to newer version if we didn't hear from the older version router 17907c478bd9Sstevel@tonic-gate * in MLD_AGE_THRESHOLD seconds. 17917c478bd9Sstevel@tonic-gate * - Restarts slowtimeout. 17927c478bd9Sstevel@tonic-gate */ 17937c478bd9Sstevel@tonic-gate /* ARGSUSED */ 17947c478bd9Sstevel@tonic-gate void 17957c478bd9Sstevel@tonic-gate mld_slowtimo(void *arg) 17967c478bd9Sstevel@tonic-gate { 17977c478bd9Sstevel@tonic-gate ill_t *ill; 17987c478bd9Sstevel@tonic-gate ill_if_t *ifp; 17997c478bd9Sstevel@tonic-gate avl_tree_t *avl_tree; 1800*f4b3ec61Sdh ip_stack_t *ipst = (ip_stack_t *)arg; 18017c478bd9Sstevel@tonic-gate 1802*f4b3ec61Sdh ASSERT(arg != NULL); 18037c478bd9Sstevel@tonic-gate /* See comments in igmp_slowtimo() above... */ 1804*f4b3ec61Sdh rw_enter(&ipst->ips_ill_g_lock, RW_READER); 1805*f4b3ec61Sdh for (ifp = IP_V6_ILL_G_LIST(ipst); 1806*f4b3ec61Sdh ifp != (ill_if_t *)&IP_V6_ILL_G_LIST(ipst); 18077c478bd9Sstevel@tonic-gate ifp = ifp->illif_next) { 18087c478bd9Sstevel@tonic-gate if (ifp->illif_mcast_v1 == 0) 18097c478bd9Sstevel@tonic-gate continue; 18107c478bd9Sstevel@tonic-gate 18117c478bd9Sstevel@tonic-gate avl_tree = &ifp->illif_avl_by_ppa; 18127c478bd9Sstevel@tonic-gate for (ill = avl_first(avl_tree); ill != NULL; 18137c478bd9Sstevel@tonic-gate ill = avl_walk(avl_tree, ill, AVL_AFTER)) { 18147c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 18157c478bd9Sstevel@tonic-gate if (ill->ill_mcast_v1_tset == 1) 18167c478bd9Sstevel@tonic-gate ill->ill_mcast_v1_time++; 18177c478bd9Sstevel@tonic-gate if (ill->ill_mcast_type == MLD_V1_ROUTER) { 18187c478bd9Sstevel@tonic-gate if (ill->ill_mcast_v1_time >= OVQP(ill)) { 18197c478bd9Sstevel@tonic-gate ip1dbg(("MLD query timer expired on" 18207c478bd9Sstevel@tonic-gate " %s; switching mode to MLD_V2\n", 18217c478bd9Sstevel@tonic-gate ill->ill_name)); 18227c478bd9Sstevel@tonic-gate ill->ill_mcast_type = MLD_V2_ROUTER; 18237c478bd9Sstevel@tonic-gate ill->ill_mcast_v1_time = 0; 18247c478bd9Sstevel@tonic-gate ill->ill_mcast_v1_tset = 0; 18257c478bd9Sstevel@tonic-gate atomic_add_16(&ifp->illif_mcast_v1, -1); 18267c478bd9Sstevel@tonic-gate } 18277c478bd9Sstevel@tonic-gate } 18287c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 18297c478bd9Sstevel@tonic-gate } 18307c478bd9Sstevel@tonic-gate } 1831*f4b3ec61Sdh rw_exit(&ipst->ips_ill_g_lock); 1832*f4b3ec61Sdh mutex_enter(&ipst->ips_mld_slowtimeout_lock); 1833*f4b3ec61Sdh ipst->ips_mld_slowtimeout_id = timeout(mld_slowtimo, (void *)ipst, 18347c478bd9Sstevel@tonic-gate MSEC_TO_TICK(MCAST_SLOWTIMO_INTERVAL)); 1835*f4b3ec61Sdh mutex_exit(&ipst->ips_mld_slowtimeout_lock); 18367c478bd9Sstevel@tonic-gate } 18377c478bd9Sstevel@tonic-gate 18387c478bd9Sstevel@tonic-gate /* 18397c478bd9Sstevel@tonic-gate * igmp_sendpkt: 18407c478bd9Sstevel@tonic-gate * This will send to ip_wput like icmp_inbound. 18417c478bd9Sstevel@tonic-gate * Note that the lower ill (on which the membership is kept) is used 18427c478bd9Sstevel@tonic-gate * as an upper ill to pass in the multicast parameters. 18437c478bd9Sstevel@tonic-gate */ 18447c478bd9Sstevel@tonic-gate static void 18457c478bd9Sstevel@tonic-gate igmp_sendpkt(ilm_t *ilm, uchar_t type, ipaddr_t addr) 18467c478bd9Sstevel@tonic-gate { 18477c478bd9Sstevel@tonic-gate mblk_t *mp; 18487c478bd9Sstevel@tonic-gate igmpa_t *igmpa; 18497c478bd9Sstevel@tonic-gate uint8_t *rtralert; 18507c478bd9Sstevel@tonic-gate ipha_t *ipha; 18517c478bd9Sstevel@tonic-gate int hdrlen = sizeof (ipha_t) + RTRALERT_LEN; 18527c478bd9Sstevel@tonic-gate size_t size = hdrlen + sizeof (igmpa_t); 18537c478bd9Sstevel@tonic-gate ipif_t *ipif = ilm->ilm_ipif; 18547c478bd9Sstevel@tonic-gate ill_t *ill = ipif->ipif_ill; /* Will be the "lower" ill */ 18557c478bd9Sstevel@tonic-gate mblk_t *first_mp; 18567c478bd9Sstevel@tonic-gate ipsec_out_t *io; 185745916cd2Sjpk zoneid_t zoneid; 1858*f4b3ec61Sdh ip_stack_t *ipst = ill->ill_ipst; 18597c478bd9Sstevel@tonic-gate 18607c478bd9Sstevel@tonic-gate /* 18617c478bd9Sstevel@tonic-gate * We need to make sure this packet goes out on an ipif. If 18627c478bd9Sstevel@tonic-gate * there is some global policy match in ip_wput_ire, we need 18637c478bd9Sstevel@tonic-gate * to get to the right interface after IPSEC processing. 18647c478bd9Sstevel@tonic-gate * To make sure this multicast packet goes out on the right 18657c478bd9Sstevel@tonic-gate * interface, we attach an ipsec_out and initialize ill_index 18667c478bd9Sstevel@tonic-gate * like we did in ip_wput. To make sure that this packet does 18677c478bd9Sstevel@tonic-gate * not get forwarded on other interfaces or looped back, we 18687c478bd9Sstevel@tonic-gate * set ipsec_out_dontroute to B_TRUE and ipsec_out_multicast_loop 18697c478bd9Sstevel@tonic-gate * to B_FALSE. 18707c478bd9Sstevel@tonic-gate * 18717c478bd9Sstevel@tonic-gate * We also need to make sure that this does not get load balanced 18727c478bd9Sstevel@tonic-gate * if it hits ip_newroute_ipif. So, we initialize ipsec_out_attach_if 18737c478bd9Sstevel@tonic-gate * here. If it gets load balanced, switches supporting igmp snooping 18747c478bd9Sstevel@tonic-gate * will send the packet that it receives for this multicast group 18757c478bd9Sstevel@tonic-gate * to the interface that we are sending on. As we have joined the 18767c478bd9Sstevel@tonic-gate * multicast group on this ill, by sending the packet out on this 18777c478bd9Sstevel@tonic-gate * ill, we receive all the packets back on this ill. 18787c478bd9Sstevel@tonic-gate */ 18797c478bd9Sstevel@tonic-gate first_mp = allocb(sizeof (ipsec_info_t), BPRI_HI); 18807c478bd9Sstevel@tonic-gate if (first_mp == NULL) 18817c478bd9Sstevel@tonic-gate return; 18827c478bd9Sstevel@tonic-gate 18837c478bd9Sstevel@tonic-gate first_mp->b_datap->db_type = M_CTL; 18847c478bd9Sstevel@tonic-gate first_mp->b_wptr += sizeof (ipsec_info_t); 18857c478bd9Sstevel@tonic-gate bzero(first_mp->b_rptr, sizeof (ipsec_info_t)); 18867c478bd9Sstevel@tonic-gate /* ipsec_out_secure is B_FALSE now */ 18877c478bd9Sstevel@tonic-gate io = (ipsec_out_t *)first_mp->b_rptr; 18887c478bd9Sstevel@tonic-gate io->ipsec_out_type = IPSEC_OUT; 18897c478bd9Sstevel@tonic-gate io->ipsec_out_len = sizeof (ipsec_out_t); 18907c478bd9Sstevel@tonic-gate io->ipsec_out_use_global_policy = B_TRUE; 18917c478bd9Sstevel@tonic-gate io->ipsec_out_ill_index = ill->ill_phyint->phyint_ifindex; 18927c478bd9Sstevel@tonic-gate io->ipsec_out_attach_if = B_TRUE; 18937c478bd9Sstevel@tonic-gate io->ipsec_out_multicast_loop = B_FALSE; 18947c478bd9Sstevel@tonic-gate io->ipsec_out_dontroute = B_TRUE; 189545916cd2Sjpk if ((zoneid = ilm->ilm_zoneid) == ALL_ZONES) 189645916cd2Sjpk zoneid = GLOBAL_ZONEID; 189745916cd2Sjpk io->ipsec_out_zoneid = zoneid; 1898*f4b3ec61Sdh io->ipsec_out_ns = ipst->ips_netstack; /* No netstack_hold */ 18997c478bd9Sstevel@tonic-gate 19007c478bd9Sstevel@tonic-gate mp = allocb(size, BPRI_HI); 19017c478bd9Sstevel@tonic-gate if (mp == NULL) { 19027c478bd9Sstevel@tonic-gate freemsg(first_mp); 19037c478bd9Sstevel@tonic-gate return; 19047c478bd9Sstevel@tonic-gate } 19057c478bd9Sstevel@tonic-gate mp->b_wptr = mp->b_rptr + size; 19067c478bd9Sstevel@tonic-gate first_mp->b_cont = mp; 19077c478bd9Sstevel@tonic-gate 19087c478bd9Sstevel@tonic-gate ipha = (ipha_t *)mp->b_rptr; 19097c478bd9Sstevel@tonic-gate rtralert = (uint8_t *)&(ipha[1]); 19107c478bd9Sstevel@tonic-gate igmpa = (igmpa_t *)&(rtralert[RTRALERT_LEN]); 19117c478bd9Sstevel@tonic-gate igmpa->igmpa_type = type; 19127c478bd9Sstevel@tonic-gate igmpa->igmpa_code = 0; 19137c478bd9Sstevel@tonic-gate igmpa->igmpa_group = ilm->ilm_addr; 19147c478bd9Sstevel@tonic-gate igmpa->igmpa_cksum = 0; 19157c478bd9Sstevel@tonic-gate igmpa->igmpa_cksum = IP_CSUM(mp, hdrlen, 0); 1916ff550d0eSmasputra if (igmpa->igmpa_cksum == 0) 1917ff550d0eSmasputra igmpa->igmpa_cksum = 0xffff; 19187c478bd9Sstevel@tonic-gate 1919c0ad9723Srk rtralert[0] = IPOPT_COPY | IPOPT_RTRALERT; 19207c478bd9Sstevel@tonic-gate rtralert[1] = RTRALERT_LEN; 19217c478bd9Sstevel@tonic-gate rtralert[2] = 0; 19227c478bd9Sstevel@tonic-gate rtralert[3] = 0; 19237c478bd9Sstevel@tonic-gate 19247c478bd9Sstevel@tonic-gate ipha->ipha_version_and_hdr_length = (IP_VERSION << 4) 19257c478bd9Sstevel@tonic-gate | (IP_SIMPLE_HDR_LENGTH_IN_WORDS + RTRALERT_LEN_IN_WORDS); 19267c478bd9Sstevel@tonic-gate ipha->ipha_type_of_service = 0; 19277c478bd9Sstevel@tonic-gate ipha->ipha_length = htons(size); 19287c478bd9Sstevel@tonic-gate ipha->ipha_ident = 0; 19297c478bd9Sstevel@tonic-gate ipha->ipha_fragment_offset_and_flags = 0; 19307c478bd9Sstevel@tonic-gate ipha->ipha_ttl = IGMP_TTL; 19317c478bd9Sstevel@tonic-gate ipha->ipha_protocol = IPPROTO_IGMP; 19327c478bd9Sstevel@tonic-gate ipha->ipha_hdr_checksum = 0; 19337c478bd9Sstevel@tonic-gate ipha->ipha_dst = addr ? addr : igmpa->igmpa_group; 19347c478bd9Sstevel@tonic-gate ipha->ipha_src = ipif->ipif_src_addr; 19357c478bd9Sstevel@tonic-gate /* 19367c478bd9Sstevel@tonic-gate * Request loopback of the report if we are acting as a multicast 19377c478bd9Sstevel@tonic-gate * router, so that the process-level routing demon can hear it. 19387c478bd9Sstevel@tonic-gate */ 19397c478bd9Sstevel@tonic-gate /* 19407c478bd9Sstevel@tonic-gate * This will run multiple times for the same group if there are members 19417c478bd9Sstevel@tonic-gate * on the same group for multiple ipif's on the same ill. The 19427c478bd9Sstevel@tonic-gate * igmp_input code will suppress this due to the loopback thus we 19437c478bd9Sstevel@tonic-gate * always loopback membership report. 19447c478bd9Sstevel@tonic-gate */ 19457c478bd9Sstevel@tonic-gate ASSERT(ill->ill_rq != NULL); 19467c478bd9Sstevel@tonic-gate ip_multicast_loopback(ill->ill_rq, ill, first_mp, 0, ilm->ilm_zoneid); 19477c478bd9Sstevel@tonic-gate 19485597b60aSnordmark ip_wput_multicast(ill->ill_wq, first_mp, ipif, zoneid); 19497c478bd9Sstevel@tonic-gate 1950*f4b3ec61Sdh ++ipst->ips_igmpstat.igps_snd_reports; 19517c478bd9Sstevel@tonic-gate } 19527c478bd9Sstevel@tonic-gate 19537c478bd9Sstevel@tonic-gate /* 19547c478bd9Sstevel@tonic-gate * Sends an IGMP_V3_MEMBERSHIP_REPORT message out the ill associated 19557c478bd9Sstevel@tonic-gate * with the passed-in ipif. The report will contain one group record 19567c478bd9Sstevel@tonic-gate * for each element of reclist. If this causes packet length to 19577c478bd9Sstevel@tonic-gate * exceed ipif->ipif_ill->ill_max_frag, multiple reports are sent. 19587c478bd9Sstevel@tonic-gate * reclist is assumed to be made up of buffers allocated by mcast_bldmrec(), 19597c478bd9Sstevel@tonic-gate * and those buffers are freed here. 19607c478bd9Sstevel@tonic-gate */ 19617c478bd9Sstevel@tonic-gate static void 19627c478bd9Sstevel@tonic-gate igmpv3_sendrpt(ipif_t *ipif, mrec_t *reclist) 19637c478bd9Sstevel@tonic-gate { 19647c478bd9Sstevel@tonic-gate ipsec_out_t *io; 19657c478bd9Sstevel@tonic-gate igmp3ra_t *igmp3ra; 19667c478bd9Sstevel@tonic-gate grphdra_t *grphdr; 19677c478bd9Sstevel@tonic-gate mblk_t *first_mp, *mp; 19687c478bd9Sstevel@tonic-gate ipha_t *ipha; 19697c478bd9Sstevel@tonic-gate uint8_t *rtralert; 19707c478bd9Sstevel@tonic-gate ipaddr_t *src_array; 19717c478bd9Sstevel@tonic-gate int i, j, numrec, more_src_cnt; 19727c478bd9Sstevel@tonic-gate size_t hdrsize, size, rsize; 19737c478bd9Sstevel@tonic-gate ill_t *ill = ipif->ipif_ill; 19747c478bd9Sstevel@tonic-gate mrec_t *rp, *cur_reclist; 19757c478bd9Sstevel@tonic-gate mrec_t *next_reclist = reclist; 19767c478bd9Sstevel@tonic-gate boolean_t morepkts; 197745916cd2Sjpk zoneid_t zoneid; 1978*f4b3ec61Sdh ip_stack_t *ipst = ill->ill_ipst; 19797c478bd9Sstevel@tonic-gate 19807c478bd9Sstevel@tonic-gate /* if there aren't any records, there's nothing to send */ 19817c478bd9Sstevel@tonic-gate if (reclist == NULL) 19827c478bd9Sstevel@tonic-gate return; 19837c478bd9Sstevel@tonic-gate 19847c478bd9Sstevel@tonic-gate hdrsize = sizeof (ipha_t) + RTRALERT_LEN; 19857c478bd9Sstevel@tonic-gate nextpkt: 19867c478bd9Sstevel@tonic-gate size = hdrsize + sizeof (igmp3ra_t); 19877c478bd9Sstevel@tonic-gate morepkts = B_FALSE; 19887c478bd9Sstevel@tonic-gate more_src_cnt = 0; 19897c478bd9Sstevel@tonic-gate cur_reclist = next_reclist; 19907c478bd9Sstevel@tonic-gate numrec = 0; 19917c478bd9Sstevel@tonic-gate for (rp = cur_reclist; rp != NULL; rp = rp->mrec_next) { 19927c478bd9Sstevel@tonic-gate rsize = sizeof (grphdra_t) + 19937c478bd9Sstevel@tonic-gate (rp->mrec_srcs.sl_numsrc * sizeof (ipaddr_t)); 19947c478bd9Sstevel@tonic-gate if (size + rsize > ill->ill_max_frag) { 19957c478bd9Sstevel@tonic-gate if (rp == cur_reclist) { 19967c478bd9Sstevel@tonic-gate /* 19977c478bd9Sstevel@tonic-gate * If the first mrec we looked at is too big 19987c478bd9Sstevel@tonic-gate * to fit in a single packet (i.e the source 19997c478bd9Sstevel@tonic-gate * list is too big), we must either truncate 20007c478bd9Sstevel@tonic-gate * the list (if TO_EX or IS_EX), or send 20017c478bd9Sstevel@tonic-gate * multiple reports for the same group (all 20027c478bd9Sstevel@tonic-gate * other types). 20037c478bd9Sstevel@tonic-gate */ 20047c478bd9Sstevel@tonic-gate int srcspace, srcsperpkt; 20057c478bd9Sstevel@tonic-gate srcspace = ill->ill_max_frag - (size + 20067c478bd9Sstevel@tonic-gate sizeof (grphdra_t)); 20077c478bd9Sstevel@tonic-gate srcsperpkt = srcspace / sizeof (ipaddr_t); 20087c478bd9Sstevel@tonic-gate /* 20097c478bd9Sstevel@tonic-gate * Increment size and numrec, because we will 20107c478bd9Sstevel@tonic-gate * be sending a record for the mrec we're 20117c478bd9Sstevel@tonic-gate * looking at now. 20127c478bd9Sstevel@tonic-gate */ 20137c478bd9Sstevel@tonic-gate size += sizeof (grphdra_t) + 20147c478bd9Sstevel@tonic-gate (srcsperpkt * sizeof (ipaddr_t)); 20157c478bd9Sstevel@tonic-gate numrec++; 20167c478bd9Sstevel@tonic-gate if (rp->mrec_type == MODE_IS_EXCLUDE || 20177c478bd9Sstevel@tonic-gate rp->mrec_type == CHANGE_TO_EXCLUDE) { 20187c478bd9Sstevel@tonic-gate rp->mrec_srcs.sl_numsrc = srcsperpkt; 20197c478bd9Sstevel@tonic-gate if (rp->mrec_next == NULL) { 20207c478bd9Sstevel@tonic-gate /* no more packets to send */ 20217c478bd9Sstevel@tonic-gate break; 20227c478bd9Sstevel@tonic-gate } else { 20237c478bd9Sstevel@tonic-gate /* 20247c478bd9Sstevel@tonic-gate * more packets, but we're 20257c478bd9Sstevel@tonic-gate * done with this mrec. 20267c478bd9Sstevel@tonic-gate */ 20277c478bd9Sstevel@tonic-gate next_reclist = rp->mrec_next; 20287c478bd9Sstevel@tonic-gate } 20297c478bd9Sstevel@tonic-gate } else { 20307c478bd9Sstevel@tonic-gate more_src_cnt = rp->mrec_srcs.sl_numsrc 20317c478bd9Sstevel@tonic-gate - srcsperpkt; 20327c478bd9Sstevel@tonic-gate rp->mrec_srcs.sl_numsrc = srcsperpkt; 20337c478bd9Sstevel@tonic-gate /* 20347c478bd9Sstevel@tonic-gate * We'll fix up this mrec (remove the 20357c478bd9Sstevel@tonic-gate * srcs we've already sent) before 20367c478bd9Sstevel@tonic-gate * returning to nextpkt above. 20377c478bd9Sstevel@tonic-gate */ 20387c478bd9Sstevel@tonic-gate next_reclist = rp; 20397c478bd9Sstevel@tonic-gate } 20407c478bd9Sstevel@tonic-gate } else { 20417c478bd9Sstevel@tonic-gate next_reclist = rp; 20427c478bd9Sstevel@tonic-gate } 20437c478bd9Sstevel@tonic-gate morepkts = B_TRUE; 20447c478bd9Sstevel@tonic-gate break; 20457c478bd9Sstevel@tonic-gate } 20467c478bd9Sstevel@tonic-gate size += rsize; 20477c478bd9Sstevel@tonic-gate numrec++; 20487c478bd9Sstevel@tonic-gate } 20497c478bd9Sstevel@tonic-gate 20507c478bd9Sstevel@tonic-gate /* 20517c478bd9Sstevel@tonic-gate * See comments in igmp_sendpkt() about initializing for ipsec and 20527c478bd9Sstevel@tonic-gate * load balancing requirements. 20537c478bd9Sstevel@tonic-gate */ 20547c478bd9Sstevel@tonic-gate first_mp = allocb(sizeof (ipsec_info_t), BPRI_HI); 20557c478bd9Sstevel@tonic-gate if (first_mp == NULL) 20567c478bd9Sstevel@tonic-gate goto free_reclist; 20577c478bd9Sstevel@tonic-gate 20587c478bd9Sstevel@tonic-gate first_mp->b_datap->db_type = M_CTL; 20597c478bd9Sstevel@tonic-gate first_mp->b_wptr += sizeof (ipsec_info_t); 20607c478bd9Sstevel@tonic-gate bzero(first_mp->b_rptr, sizeof (ipsec_info_t)); 20617c478bd9Sstevel@tonic-gate /* ipsec_out_secure is B_FALSE now */ 20627c478bd9Sstevel@tonic-gate io = (ipsec_out_t *)first_mp->b_rptr; 20637c478bd9Sstevel@tonic-gate io->ipsec_out_type = IPSEC_OUT; 20647c478bd9Sstevel@tonic-gate io->ipsec_out_len = sizeof (ipsec_out_t); 20657c478bd9Sstevel@tonic-gate io->ipsec_out_use_global_policy = B_TRUE; 20667c478bd9Sstevel@tonic-gate io->ipsec_out_ill_index = ill->ill_phyint->phyint_ifindex; 20677c478bd9Sstevel@tonic-gate io->ipsec_out_attach_if = B_TRUE; 20687c478bd9Sstevel@tonic-gate io->ipsec_out_multicast_loop = B_FALSE; 20697c478bd9Sstevel@tonic-gate io->ipsec_out_dontroute = B_TRUE; 207045916cd2Sjpk if ((zoneid = ipif->ipif_zoneid) == ALL_ZONES) 207145916cd2Sjpk zoneid = GLOBAL_ZONEID; 207245916cd2Sjpk io->ipsec_out_zoneid = zoneid; 20737c478bd9Sstevel@tonic-gate 20747c478bd9Sstevel@tonic-gate mp = allocb(size, BPRI_HI); 20757c478bd9Sstevel@tonic-gate if (mp == NULL) { 20767c478bd9Sstevel@tonic-gate freemsg(first_mp); 20777c478bd9Sstevel@tonic-gate goto free_reclist; 20787c478bd9Sstevel@tonic-gate } 20797c478bd9Sstevel@tonic-gate bzero((char *)mp->b_rptr, size); 20807c478bd9Sstevel@tonic-gate mp->b_wptr = (uchar_t *)(mp->b_rptr + size); 20817c478bd9Sstevel@tonic-gate first_mp->b_cont = mp; 20827c478bd9Sstevel@tonic-gate 20837c478bd9Sstevel@tonic-gate ipha = (ipha_t *)mp->b_rptr; 20847c478bd9Sstevel@tonic-gate rtralert = (uint8_t *)&(ipha[1]); 20857c478bd9Sstevel@tonic-gate igmp3ra = (igmp3ra_t *)&(rtralert[RTRALERT_LEN]); 20867c478bd9Sstevel@tonic-gate grphdr = (grphdra_t *)&(igmp3ra[1]); 20877c478bd9Sstevel@tonic-gate 20887c478bd9Sstevel@tonic-gate rp = cur_reclist; 20897c478bd9Sstevel@tonic-gate for (i = 0; i < numrec; i++) { 20907c478bd9Sstevel@tonic-gate grphdr->grphdra_type = rp->mrec_type; 20917c478bd9Sstevel@tonic-gate grphdr->grphdra_numsrc = htons(rp->mrec_srcs.sl_numsrc); 20927c478bd9Sstevel@tonic-gate grphdr->grphdra_group = V4_PART_OF_V6(rp->mrec_group); 20937c478bd9Sstevel@tonic-gate src_array = (ipaddr_t *)&(grphdr[1]); 20947c478bd9Sstevel@tonic-gate 20957c478bd9Sstevel@tonic-gate for (j = 0; j < rp->mrec_srcs.sl_numsrc; j++) 20967c478bd9Sstevel@tonic-gate src_array[j] = V4_PART_OF_V6(rp->mrec_srcs.sl_addr[j]); 20977c478bd9Sstevel@tonic-gate 20987c478bd9Sstevel@tonic-gate grphdr = (grphdra_t *)&(src_array[j]); 20997c478bd9Sstevel@tonic-gate rp = rp->mrec_next; 21007c478bd9Sstevel@tonic-gate } 21017c478bd9Sstevel@tonic-gate 21027c478bd9Sstevel@tonic-gate igmp3ra->igmp3ra_type = IGMP_V3_MEMBERSHIP_REPORT; 21037c478bd9Sstevel@tonic-gate igmp3ra->igmp3ra_numrec = htons(numrec); 21047c478bd9Sstevel@tonic-gate igmp3ra->igmp3ra_cksum = IP_CSUM(mp, hdrsize, 0); 21057c478bd9Sstevel@tonic-gate 2106c0ad9723Srk rtralert[0] = IPOPT_COPY | IPOPT_RTRALERT; 21077c478bd9Sstevel@tonic-gate rtralert[1] = RTRALERT_LEN; 21087c478bd9Sstevel@tonic-gate rtralert[2] = 0; 21097c478bd9Sstevel@tonic-gate rtralert[3] = 0; 21107c478bd9Sstevel@tonic-gate 21117c478bd9Sstevel@tonic-gate ipha->ipha_version_and_hdr_length = IP_VERSION << 4 21127c478bd9Sstevel@tonic-gate | (IP_SIMPLE_HDR_LENGTH_IN_WORDS + RTRALERT_LEN_IN_WORDS); 21137c478bd9Sstevel@tonic-gate ipha->ipha_type_of_service = IPTOS_PREC_INTERNETCONTROL; 21147c478bd9Sstevel@tonic-gate ipha->ipha_length = htons(size); 21157c478bd9Sstevel@tonic-gate ipha->ipha_ttl = IGMP_TTL; 21167c478bd9Sstevel@tonic-gate ipha->ipha_protocol = IPPROTO_IGMP; 21177c478bd9Sstevel@tonic-gate ipha->ipha_dst = htonl(INADDR_ALLRPTS_GROUP); 21187c478bd9Sstevel@tonic-gate ipha->ipha_src = ipif->ipif_src_addr; 21197c478bd9Sstevel@tonic-gate 21207c478bd9Sstevel@tonic-gate /* 21217c478bd9Sstevel@tonic-gate * Request loopback of the report if we are acting as a multicast 21227c478bd9Sstevel@tonic-gate * router, so that the process-level routing daemon can hear it. 21237c478bd9Sstevel@tonic-gate * 21247c478bd9Sstevel@tonic-gate * This will run multiple times for the same group if there are 21257c478bd9Sstevel@tonic-gate * members on the same group for multiple ipifs on the same ill. 21267c478bd9Sstevel@tonic-gate * The igmp_input code will suppress this due to the loopback; 21277c478bd9Sstevel@tonic-gate * thus we always loopback membership report. 21287c478bd9Sstevel@tonic-gate */ 21297c478bd9Sstevel@tonic-gate ASSERT(ill->ill_rq != NULL); 21307c478bd9Sstevel@tonic-gate ip_multicast_loopback(ill->ill_rq, ill, mp, 0, ipif->ipif_zoneid); 21317c478bd9Sstevel@tonic-gate 21325597b60aSnordmark ip_wput_multicast(ill->ill_wq, first_mp, ipif, zoneid); 21337c478bd9Sstevel@tonic-gate 2134*f4b3ec61Sdh ++ipst->ips_igmpstat.igps_snd_reports; 21357c478bd9Sstevel@tonic-gate 21367c478bd9Sstevel@tonic-gate if (morepkts) { 21377c478bd9Sstevel@tonic-gate if (more_src_cnt > 0) { 21387c478bd9Sstevel@tonic-gate int index, mvsize; 21397c478bd9Sstevel@tonic-gate slist_t *sl = &next_reclist->mrec_srcs; 21407c478bd9Sstevel@tonic-gate index = sl->sl_numsrc; 21417c478bd9Sstevel@tonic-gate mvsize = more_src_cnt * sizeof (in6_addr_t); 21427c478bd9Sstevel@tonic-gate (void) memmove(&sl->sl_addr[0], &sl->sl_addr[index], 21437c478bd9Sstevel@tonic-gate mvsize); 21447c478bd9Sstevel@tonic-gate sl->sl_numsrc = more_src_cnt; 21457c478bd9Sstevel@tonic-gate } 21467c478bd9Sstevel@tonic-gate goto nextpkt; 21477c478bd9Sstevel@tonic-gate } 21487c478bd9Sstevel@tonic-gate 21497c478bd9Sstevel@tonic-gate free_reclist: 21507c478bd9Sstevel@tonic-gate while (reclist != NULL) { 21517c478bd9Sstevel@tonic-gate rp = reclist->mrec_next; 21527c478bd9Sstevel@tonic-gate mi_free(reclist); 21537c478bd9Sstevel@tonic-gate reclist = rp; 21547c478bd9Sstevel@tonic-gate } 21557c478bd9Sstevel@tonic-gate } 21567c478bd9Sstevel@tonic-gate 21577c478bd9Sstevel@tonic-gate /* 21587c478bd9Sstevel@tonic-gate * mld_input: 21597c478bd9Sstevel@tonic-gate */ 21607c478bd9Sstevel@tonic-gate /* ARGSUSED */ 21617c478bd9Sstevel@tonic-gate void 21627c478bd9Sstevel@tonic-gate mld_input(queue_t *q, mblk_t *mp, ill_t *ill) 21637c478bd9Sstevel@tonic-gate { 21647c478bd9Sstevel@tonic-gate ip6_t *ip6h = (ip6_t *)(mp->b_rptr); 21657c478bd9Sstevel@tonic-gate mld_hdr_t *mldh; 21667c478bd9Sstevel@tonic-gate ilm_t *ilm; 21677c478bd9Sstevel@tonic-gate ipif_t *ipif; 21687c478bd9Sstevel@tonic-gate uint16_t hdr_length, exthdr_length; 21697c478bd9Sstevel@tonic-gate in6_addr_t *v6group_ptr, *lcladdr_ptr; 21707c478bd9Sstevel@tonic-gate uint_t next; 21717c478bd9Sstevel@tonic-gate int mldlen; 2172*f4b3ec61Sdh ip_stack_t *ipst = ill->ill_ipst; 21737c478bd9Sstevel@tonic-gate 21747c478bd9Sstevel@tonic-gate BUMP_MIB(ill->ill_icmp6_mib, ipv6IfIcmpInGroupMembTotal); 21757c478bd9Sstevel@tonic-gate 21767c478bd9Sstevel@tonic-gate /* Make sure the src address of the packet is link-local */ 21777c478bd9Sstevel@tonic-gate if (!(IN6_IS_ADDR_LINKLOCAL(&ip6h->ip6_src))) { 21787c478bd9Sstevel@tonic-gate BUMP_MIB(ill->ill_icmp6_mib, ipv6IfIcmpInErrors); 21797c478bd9Sstevel@tonic-gate freemsg(mp); 21807c478bd9Sstevel@tonic-gate return; 21817c478bd9Sstevel@tonic-gate } 21827c478bd9Sstevel@tonic-gate 21837c478bd9Sstevel@tonic-gate if (ip6h->ip6_hlim != 1) { 21847c478bd9Sstevel@tonic-gate BUMP_MIB(ill->ill_icmp6_mib, ipv6IfIcmpBadHoplimit); 21857c478bd9Sstevel@tonic-gate freemsg(mp); 21867c478bd9Sstevel@tonic-gate return; 21877c478bd9Sstevel@tonic-gate } 21887c478bd9Sstevel@tonic-gate 21897c478bd9Sstevel@tonic-gate /* Get to the icmp header part */ 21907c478bd9Sstevel@tonic-gate if (ip6h->ip6_nxt != IPPROTO_ICMPV6) { 21917c478bd9Sstevel@tonic-gate hdr_length = ip_hdr_length_v6(mp, ip6h); 21927c478bd9Sstevel@tonic-gate exthdr_length = hdr_length - IPV6_HDR_LEN; 21937c478bd9Sstevel@tonic-gate } else { 21947c478bd9Sstevel@tonic-gate hdr_length = IPV6_HDR_LEN; 21957c478bd9Sstevel@tonic-gate exthdr_length = 0; 21967c478bd9Sstevel@tonic-gate } 21977c478bd9Sstevel@tonic-gate mldlen = ntohs(ip6h->ip6_plen) - exthdr_length; 21987c478bd9Sstevel@tonic-gate 21997c478bd9Sstevel@tonic-gate /* An MLD packet must at least be 24 octets to be valid */ 22007c478bd9Sstevel@tonic-gate if (mldlen < MLD_MINLEN) { 22017c478bd9Sstevel@tonic-gate BUMP_MIB(ill->ill_icmp6_mib, ipv6IfIcmpInErrors); 22027c478bd9Sstevel@tonic-gate freemsg(mp); 22037c478bd9Sstevel@tonic-gate return; 22047c478bd9Sstevel@tonic-gate } 22057c478bd9Sstevel@tonic-gate 22067c478bd9Sstevel@tonic-gate mldh = (mld_hdr_t *)(&mp->b_rptr[hdr_length]); 22077c478bd9Sstevel@tonic-gate 22087c478bd9Sstevel@tonic-gate switch (mldh->mld_type) { 22097c478bd9Sstevel@tonic-gate case MLD_LISTENER_QUERY: 22107c478bd9Sstevel@tonic-gate /* 22117c478bd9Sstevel@tonic-gate * packet length differentiates between v1 and v2. v1 22127c478bd9Sstevel@tonic-gate * query should be exactly 24 octets long; v2 is >= 28. 22137c478bd9Sstevel@tonic-gate */ 22147c478bd9Sstevel@tonic-gate if (mldlen == MLD_MINLEN) { 22157c478bd9Sstevel@tonic-gate next = mld_query_in(mldh, ill); 22167c478bd9Sstevel@tonic-gate } else if (mldlen >= MLD_V2_QUERY_MINLEN) { 22177c478bd9Sstevel@tonic-gate next = mldv2_query_in((mld2q_t *)mldh, ill, mldlen); 22187c478bd9Sstevel@tonic-gate } else { 22197c478bd9Sstevel@tonic-gate BUMP_MIB(ill->ill_icmp6_mib, ipv6IfIcmpInErrors); 22207c478bd9Sstevel@tonic-gate freemsg(mp); 22217c478bd9Sstevel@tonic-gate return; 22227c478bd9Sstevel@tonic-gate } 22237c478bd9Sstevel@tonic-gate if (next == 0) { 22247c478bd9Sstevel@tonic-gate freemsg(mp); 22257c478bd9Sstevel@tonic-gate return; 22267c478bd9Sstevel@tonic-gate } 22277c478bd9Sstevel@tonic-gate 22287c478bd9Sstevel@tonic-gate if (next != INFINITY) 2229*f4b3ec61Sdh mld_start_timers(next, ipst); 22307c478bd9Sstevel@tonic-gate break; 22317c478bd9Sstevel@tonic-gate 22327c478bd9Sstevel@tonic-gate case MLD_LISTENER_REPORT: { 22337c478bd9Sstevel@tonic-gate 22347c478bd9Sstevel@tonic-gate ASSERT(ill->ill_ipif != NULL); 22357c478bd9Sstevel@tonic-gate /* 22367c478bd9Sstevel@tonic-gate * For fast leave to work, we have to know that we are the 22377c478bd9Sstevel@tonic-gate * last person to send a report for this group. Reports 22387c478bd9Sstevel@tonic-gate * generated by us are looped back since we could potentially 22397c478bd9Sstevel@tonic-gate * be a multicast router, so discard reports sourced by me. 22407c478bd9Sstevel@tonic-gate */ 22417c478bd9Sstevel@tonic-gate lcladdr_ptr = &(ill->ill_ipif->ipif_v6subnet); 22427c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 22437c478bd9Sstevel@tonic-gate for (ipif = ill->ill_ipif; ipif != NULL; 22447c478bd9Sstevel@tonic-gate ipif = ipif->ipif_next) { 22457c478bd9Sstevel@tonic-gate if (IN6_ARE_ADDR_EQUAL(&ipif->ipif_v6lcl_addr, 22467c478bd9Sstevel@tonic-gate lcladdr_ptr)) { 22477c478bd9Sstevel@tonic-gate if (ip_debug > 1) { 22487c478bd9Sstevel@tonic-gate char buf1[INET6_ADDRSTRLEN]; 22497c478bd9Sstevel@tonic-gate char buf2[INET6_ADDRSTRLEN]; 22507c478bd9Sstevel@tonic-gate 22517c478bd9Sstevel@tonic-gate (void) mi_strlog(ill->ill_rq, 22527c478bd9Sstevel@tonic-gate 1, 22537c478bd9Sstevel@tonic-gate SL_TRACE, 22547c478bd9Sstevel@tonic-gate "mld_input: we are only " 22557c478bd9Sstevel@tonic-gate "member src %s ipif_local %s", 22567c478bd9Sstevel@tonic-gate inet_ntop(AF_INET6, lcladdr_ptr, 22577c478bd9Sstevel@tonic-gate buf1, sizeof (buf1)), 22587c478bd9Sstevel@tonic-gate inet_ntop(AF_INET6, 22597c478bd9Sstevel@tonic-gate &ipif->ipif_v6lcl_addr, 22607c478bd9Sstevel@tonic-gate buf2, sizeof (buf2))); 22617c478bd9Sstevel@tonic-gate } 22627c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 22637c478bd9Sstevel@tonic-gate freemsg(mp); 22647c478bd9Sstevel@tonic-gate return; 22657c478bd9Sstevel@tonic-gate } 22667c478bd9Sstevel@tonic-gate } 22677c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 22687c478bd9Sstevel@tonic-gate BUMP_MIB(ill->ill_icmp6_mib, ipv6IfIcmpInGroupMembResponses); 22697c478bd9Sstevel@tonic-gate 22707c478bd9Sstevel@tonic-gate v6group_ptr = &mldh->mld_addr; 22717c478bd9Sstevel@tonic-gate if (!IN6_IS_ADDR_MULTICAST(v6group_ptr)) { 22727c478bd9Sstevel@tonic-gate BUMP_MIB(ill->ill_icmp6_mib, 22737c478bd9Sstevel@tonic-gate ipv6IfIcmpInGroupMembBadReports); 22747c478bd9Sstevel@tonic-gate freemsg(mp); 22757c478bd9Sstevel@tonic-gate return; 22767c478bd9Sstevel@tonic-gate } 22777c478bd9Sstevel@tonic-gate 22787c478bd9Sstevel@tonic-gate 22797c478bd9Sstevel@tonic-gate /* 22807c478bd9Sstevel@tonic-gate * If we belong to the group being reported, and we are a 22817c478bd9Sstevel@tonic-gate * 'Delaying member' per the RFC terminology, stop our timer 22827c478bd9Sstevel@tonic-gate * for that group and 'clear flag' i.e. mark ilm_state as 22837c478bd9Sstevel@tonic-gate * IGMP_OTHERMEMBER. With zones, there can be multiple group 22847c478bd9Sstevel@tonic-gate * membership entries for the same group address (one per zone) 22857c478bd9Sstevel@tonic-gate * so we need to walk the ill_ilm list. 22867c478bd9Sstevel@tonic-gate */ 22877c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 22887c478bd9Sstevel@tonic-gate for (ilm = ill->ill_ilm; ilm != NULL; ilm = ilm->ilm_next) { 22897c478bd9Sstevel@tonic-gate if (!IN6_ARE_ADDR_EQUAL(&ilm->ilm_v6addr, v6group_ptr)) 22907c478bd9Sstevel@tonic-gate continue; 22917c478bd9Sstevel@tonic-gate BUMP_MIB(ill->ill_icmp6_mib, 22927c478bd9Sstevel@tonic-gate ipv6IfIcmpInGroupMembOurReports); 22937c478bd9Sstevel@tonic-gate 22947c478bd9Sstevel@tonic-gate ilm->ilm_timer = INFINITY; 22957c478bd9Sstevel@tonic-gate ilm->ilm_state = IGMP_OTHERMEMBER; 22967c478bd9Sstevel@tonic-gate } 22977c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 22987c478bd9Sstevel@tonic-gate break; 22997c478bd9Sstevel@tonic-gate } 23007c478bd9Sstevel@tonic-gate case MLD_LISTENER_REDUCTION: 23017c478bd9Sstevel@tonic-gate BUMP_MIB(ill->ill_icmp6_mib, ipv6IfIcmpInGroupMembReductions); 23027c478bd9Sstevel@tonic-gate break; 23037c478bd9Sstevel@tonic-gate } 23047c478bd9Sstevel@tonic-gate /* 23057c478bd9Sstevel@tonic-gate * All MLD packets have already been passed up to any 23067c478bd9Sstevel@tonic-gate * process(es) listening on a ICMP6 raw socket. This 23077c478bd9Sstevel@tonic-gate * has been accomplished in ip_deliver_local_v6 prior to 23087c478bd9Sstevel@tonic-gate * this function call. It is assumed that the multicast daemon 23097c478bd9Sstevel@tonic-gate * will have a SOCK_RAW IPPROTO_ICMPV6 (and presumbly use the 23107c478bd9Sstevel@tonic-gate * ICMP6_FILTER socket option to only receive the MLD messages) 23117c478bd9Sstevel@tonic-gate * Thus we can free the MLD message block here 23127c478bd9Sstevel@tonic-gate */ 23137c478bd9Sstevel@tonic-gate freemsg(mp); 23147c478bd9Sstevel@tonic-gate } 23157c478bd9Sstevel@tonic-gate 23167c478bd9Sstevel@tonic-gate /* 23177c478bd9Sstevel@tonic-gate * Handles an MLDv1 Listener Query. Returns 0 on error, or the appropriate 23187c478bd9Sstevel@tonic-gate * (non-zero, unsigned) timer value to be set on success. 23197c478bd9Sstevel@tonic-gate */ 23207c478bd9Sstevel@tonic-gate static uint_t 23217c478bd9Sstevel@tonic-gate mld_query_in(mld_hdr_t *mldh, ill_t *ill) 23227c478bd9Sstevel@tonic-gate { 23237c478bd9Sstevel@tonic-gate ilm_t *ilm; 23247c478bd9Sstevel@tonic-gate int timer; 23257c478bd9Sstevel@tonic-gate uint_t next; 23267c478bd9Sstevel@tonic-gate in6_addr_t *v6group; 23277c478bd9Sstevel@tonic-gate 23287c478bd9Sstevel@tonic-gate BUMP_MIB(ill->ill_icmp6_mib, ipv6IfIcmpInGroupMembQueries); 23297c478bd9Sstevel@tonic-gate 23307c478bd9Sstevel@tonic-gate /* 23317c478bd9Sstevel@tonic-gate * In the MLD specification, there are 3 states and a flag. 23327c478bd9Sstevel@tonic-gate * 23337c478bd9Sstevel@tonic-gate * In Non-Listener state, we simply don't have a membership record. 23347c478bd9Sstevel@tonic-gate * In Delaying state, our timer is running (ilm->ilm_timer < INFINITY) 23357c478bd9Sstevel@tonic-gate * In Idle Member state, our timer is not running (ilm->ilm_timer == 23367c478bd9Sstevel@tonic-gate * INFINITY) 23377c478bd9Sstevel@tonic-gate * 23387c478bd9Sstevel@tonic-gate * The flag is ilm->ilm_state, it is set to IGMP_OTHERMEMBER if 23397c478bd9Sstevel@tonic-gate * we have heard a report from another member, or IGMP_IREPORTEDLAST 23407c478bd9Sstevel@tonic-gate * if I sent the last report. 23417c478bd9Sstevel@tonic-gate */ 23427c478bd9Sstevel@tonic-gate v6group = &mldh->mld_addr; 23437c478bd9Sstevel@tonic-gate if (!(IN6_IS_ADDR_UNSPECIFIED(v6group)) && 23447c478bd9Sstevel@tonic-gate ((!IN6_IS_ADDR_MULTICAST(v6group)))) { 23457c478bd9Sstevel@tonic-gate BUMP_MIB(ill->ill_icmp6_mib, ipv6IfIcmpInGroupMembBadQueries); 23467c478bd9Sstevel@tonic-gate return (0); 23477c478bd9Sstevel@tonic-gate } 23487c478bd9Sstevel@tonic-gate 23497c478bd9Sstevel@tonic-gate /* Need to do compatibility mode checking */ 23507c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 23517c478bd9Sstevel@tonic-gate ill->ill_mcast_v1_time = 0; 23527c478bd9Sstevel@tonic-gate ill->ill_mcast_v1_tset = 1; 23537c478bd9Sstevel@tonic-gate if (ill->ill_mcast_type == MLD_V2_ROUTER) { 23547c478bd9Sstevel@tonic-gate ip1dbg(("Received MLDv1 Query on %s, switching mode to " 23557c478bd9Sstevel@tonic-gate "MLD_V1_ROUTER\n", ill->ill_name)); 23567c478bd9Sstevel@tonic-gate atomic_add_16(&ill->ill_ifptr->illif_mcast_v1, 1); 23577c478bd9Sstevel@tonic-gate ill->ill_mcast_type = MLD_V1_ROUTER; 23587c478bd9Sstevel@tonic-gate } 23597c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 23607c478bd9Sstevel@tonic-gate 23617c478bd9Sstevel@tonic-gate timer = (int)ntohs(mldh->mld_maxdelay); 23627c478bd9Sstevel@tonic-gate if (ip_debug > 1) { 23637c478bd9Sstevel@tonic-gate (void) mi_strlog(ill->ill_rq, 1, SL_TRACE, 23647c478bd9Sstevel@tonic-gate "mld_input: TIMER = mld_maxdelay %d mld_type 0x%x", 23657c478bd9Sstevel@tonic-gate timer, (int)mldh->mld_type); 23667c478bd9Sstevel@tonic-gate } 23677c478bd9Sstevel@tonic-gate 23687c478bd9Sstevel@tonic-gate /* 23697c478bd9Sstevel@tonic-gate * -Start the timers in all of our membership records for 23707c478bd9Sstevel@tonic-gate * the physical interface on which the query arrived, 23717c478bd9Sstevel@tonic-gate * excl: 23727c478bd9Sstevel@tonic-gate * 1. those that belong to the "all hosts" group, 23737c478bd9Sstevel@tonic-gate * 2. those with 0 scope, or 1 node-local scope. 23747c478bd9Sstevel@tonic-gate * 23757c478bd9Sstevel@tonic-gate * -Restart any timer that is already running but has a value 23767c478bd9Sstevel@tonic-gate * longer that the requested timeout. 23777c478bd9Sstevel@tonic-gate * -Use the value specified in the query message as the 23787c478bd9Sstevel@tonic-gate * maximum timeout. 23797c478bd9Sstevel@tonic-gate */ 23807c478bd9Sstevel@tonic-gate next = INFINITY; 23817c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 23827c478bd9Sstevel@tonic-gate for (ilm = ill->ill_ilm; ilm != NULL; ilm = ilm->ilm_next) { 23837c478bd9Sstevel@tonic-gate ASSERT(!IN6_IS_ADDR_V4MAPPED(&ilm->ilm_v6addr)); 23847c478bd9Sstevel@tonic-gate 23857c478bd9Sstevel@tonic-gate if (IN6_IS_ADDR_UNSPECIFIED(&ilm->ilm_v6addr) || 23867c478bd9Sstevel@tonic-gate IN6_IS_ADDR_MC_NODELOCAL(&ilm->ilm_v6addr) || 23877c478bd9Sstevel@tonic-gate IN6_IS_ADDR_MC_RESERVED(&ilm->ilm_v6addr)) 23887c478bd9Sstevel@tonic-gate continue; 23897c478bd9Sstevel@tonic-gate if ((!IN6_ARE_ADDR_EQUAL(&ilm->ilm_v6addr, 23907c478bd9Sstevel@tonic-gate &ipv6_all_hosts_mcast)) && 23917c478bd9Sstevel@tonic-gate (IN6_IS_ADDR_UNSPECIFIED(v6group)) || 23927c478bd9Sstevel@tonic-gate (IN6_ARE_ADDR_EQUAL(v6group, &ilm->ilm_v6addr))) { 23937c478bd9Sstevel@tonic-gate if (timer == 0) { 23947c478bd9Sstevel@tonic-gate /* Respond immediately */ 23957c478bd9Sstevel@tonic-gate ilm->ilm_timer = INFINITY; 23967c478bd9Sstevel@tonic-gate ilm->ilm_state = IGMP_IREPORTEDLAST; 23977c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 23987c478bd9Sstevel@tonic-gate mld_sendpkt(ilm, MLD_LISTENER_REPORT, NULL); 23997c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 24007c478bd9Sstevel@tonic-gate break; 24017c478bd9Sstevel@tonic-gate } 24027c478bd9Sstevel@tonic-gate if (ilm->ilm_timer > timer) { 24037c478bd9Sstevel@tonic-gate MCAST_RANDOM_DELAY(ilm->ilm_timer, timer); 24047c478bd9Sstevel@tonic-gate if (ilm->ilm_timer < next) 24057c478bd9Sstevel@tonic-gate next = ilm->ilm_timer; 24067c478bd9Sstevel@tonic-gate } 24077c478bd9Sstevel@tonic-gate break; 24087c478bd9Sstevel@tonic-gate } 24097c478bd9Sstevel@tonic-gate } 24107c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 24117c478bd9Sstevel@tonic-gate 24127c478bd9Sstevel@tonic-gate return (next); 24137c478bd9Sstevel@tonic-gate } 24147c478bd9Sstevel@tonic-gate 24157c478bd9Sstevel@tonic-gate /* 24167c478bd9Sstevel@tonic-gate * Handles an MLDv2 Listener Query. On error, returns 0; on success, 24177c478bd9Sstevel@tonic-gate * returns the appropriate (non-zero, unsigned) timer value (which may 24187c478bd9Sstevel@tonic-gate * be INFINITY) to be set. 24197c478bd9Sstevel@tonic-gate */ 24207c478bd9Sstevel@tonic-gate static uint_t 24217c478bd9Sstevel@tonic-gate mldv2_query_in(mld2q_t *mld2q, ill_t *ill, int mldlen) 24227c478bd9Sstevel@tonic-gate { 24237c478bd9Sstevel@tonic-gate ilm_t *ilm; 24247c478bd9Sstevel@tonic-gate in6_addr_t *v6group, *src_array; 24257c478bd9Sstevel@tonic-gate uint_t next, numsrc, i, mrd, delay, qqi; 24267c478bd9Sstevel@tonic-gate uint8_t qrv; 24277c478bd9Sstevel@tonic-gate 24287c478bd9Sstevel@tonic-gate v6group = &mld2q->mld2q_addr; 24297c478bd9Sstevel@tonic-gate numsrc = ntohs(mld2q->mld2q_numsrc); 24307c478bd9Sstevel@tonic-gate 24317c478bd9Sstevel@tonic-gate /* make sure numsrc matches packet size */ 24327c478bd9Sstevel@tonic-gate if (mldlen < MLD_V2_QUERY_MINLEN + (numsrc * sizeof (in6_addr_t))) { 24337c478bd9Sstevel@tonic-gate BUMP_MIB(ill->ill_icmp6_mib, ipv6IfIcmpInErrors); 24347c478bd9Sstevel@tonic-gate return (0); 24357c478bd9Sstevel@tonic-gate } 24367c478bd9Sstevel@tonic-gate src_array = (in6_addr_t *)&mld2q[1]; 24377c478bd9Sstevel@tonic-gate 24387c478bd9Sstevel@tonic-gate BUMP_MIB(ill->ill_icmp6_mib, ipv6IfIcmpInGroupMembQueries); 24397c478bd9Sstevel@tonic-gate 24407c478bd9Sstevel@tonic-gate /* extract Maximum Response Delay from code in header */ 24417c478bd9Sstevel@tonic-gate mrd = ntohs(mld2q->mld2q_mxrc); 24427c478bd9Sstevel@tonic-gate if (mrd >= MLD_V2_MAXRT_FPMIN) { 24437c478bd9Sstevel@tonic-gate uint_t hdrval, mant, exp; 24447c478bd9Sstevel@tonic-gate hdrval = mrd; 24457c478bd9Sstevel@tonic-gate mant = hdrval & MLD_V2_MAXRT_MANT_MASK; 24467c478bd9Sstevel@tonic-gate exp = (hdrval & MLD_V2_MAXRT_EXP_MASK) >> 12; 24477c478bd9Sstevel@tonic-gate mrd = (mant | 0x1000) << (exp + 3); 24487c478bd9Sstevel@tonic-gate } 24497c478bd9Sstevel@tonic-gate MCAST_RANDOM_DELAY(delay, mrd); 24507c478bd9Sstevel@tonic-gate next = (unsigned)INFINITY; 24517c478bd9Sstevel@tonic-gate 24527c478bd9Sstevel@tonic-gate if ((qrv = mld2q->mld2q_sqrv & MLD_V2_RV_MASK) == 0) 24537c478bd9Sstevel@tonic-gate ill->ill_mcast_rv = MCAST_DEF_ROBUSTNESS; 24547c478bd9Sstevel@tonic-gate else 24557c478bd9Sstevel@tonic-gate ill->ill_mcast_rv = qrv; 24567c478bd9Sstevel@tonic-gate 24577c478bd9Sstevel@tonic-gate if ((qqi = (uint_t)mld2q->mld2q_qqic) >= MLD_V2_QQI_FPMIN) { 24587c478bd9Sstevel@tonic-gate uint_t mant, exp; 24597c478bd9Sstevel@tonic-gate mant = qqi & MLD_V2_QQI_MANT_MASK; 24607c478bd9Sstevel@tonic-gate exp = (qqi & MLD_V2_QQI_EXP_MASK) >> 12; 24617c478bd9Sstevel@tonic-gate qqi = (mant | 0x10) << (exp + 3); 24627c478bd9Sstevel@tonic-gate } 24637c478bd9Sstevel@tonic-gate ill->ill_mcast_qi = (qqi == 0) ? MCAST_DEF_QUERY_INTERVAL : qqi; 24647c478bd9Sstevel@tonic-gate 24657c478bd9Sstevel@tonic-gate /* 24667c478bd9Sstevel@tonic-gate * If we have a pending general query response that's scheduled 24677c478bd9Sstevel@tonic-gate * sooner than the delay we calculated for this response, then 24687c478bd9Sstevel@tonic-gate * no action is required (MLDv2 draft section 6.2 rule 1) 24697c478bd9Sstevel@tonic-gate */ 24707c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 24717c478bd9Sstevel@tonic-gate if (ill->ill_global_timer < delay) { 24727c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 24737c478bd9Sstevel@tonic-gate return (next); 24747c478bd9Sstevel@tonic-gate } 24757c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 24767c478bd9Sstevel@tonic-gate 24777c478bd9Sstevel@tonic-gate /* 24787c478bd9Sstevel@tonic-gate * Now take action depending on query type: general, 24797c478bd9Sstevel@tonic-gate * group specific, or group/source specific. 24807c478bd9Sstevel@tonic-gate */ 24817c478bd9Sstevel@tonic-gate if ((numsrc == 0) && IN6_IS_ADDR_UNSPECIFIED(v6group)) { 24827c478bd9Sstevel@tonic-gate /* 24837c478bd9Sstevel@tonic-gate * general query 24847c478bd9Sstevel@tonic-gate * We know global timer is either not running or is 24857c478bd9Sstevel@tonic-gate * greater than our calculated delay, so reset it to 24867c478bd9Sstevel@tonic-gate * our delay (random value in range [0, response time]) 24877c478bd9Sstevel@tonic-gate */ 24887c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 24897c478bd9Sstevel@tonic-gate ill->ill_global_timer = delay; 24907c478bd9Sstevel@tonic-gate next = ill->ill_global_timer; 24917c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 24927c478bd9Sstevel@tonic-gate 24937c478bd9Sstevel@tonic-gate } else { 24947c478bd9Sstevel@tonic-gate /* group or group/source specific query */ 24957c478bd9Sstevel@tonic-gate mutex_enter(&ill->ill_lock); 24967c478bd9Sstevel@tonic-gate for (ilm = ill->ill_ilm; ilm != NULL; ilm = ilm->ilm_next) { 24977c478bd9Sstevel@tonic-gate if (IN6_IS_ADDR_UNSPECIFIED(&ilm->ilm_v6addr) || 24987c478bd9Sstevel@tonic-gate IN6_IS_ADDR_MC_NODELOCAL(&ilm->ilm_v6addr) || 24997c478bd9Sstevel@tonic-gate IN6_IS_ADDR_MC_RESERVED(&ilm->ilm_v6addr) || 25007c478bd9Sstevel@tonic-gate !IN6_ARE_ADDR_EQUAL(v6group, &ilm->ilm_v6addr)) 25017c478bd9Sstevel@tonic-gate continue; 25027c478bd9Sstevel@tonic-gate 25037c478bd9Sstevel@tonic-gate /* 25047c478bd9Sstevel@tonic-gate * If the query is group specific or we have a 25057c478bd9Sstevel@tonic-gate * pending group specific query, the response is 25067c478bd9Sstevel@tonic-gate * group specific (pending sources list should be 25077c478bd9Sstevel@tonic-gate * empty). Otherwise, need to update the pending 25087c478bd9Sstevel@tonic-gate * sources list for the group and source specific 25097c478bd9Sstevel@tonic-gate * response. 25107c478bd9Sstevel@tonic-gate */ 25117c478bd9Sstevel@tonic-gate if (numsrc == 0 || (ilm->ilm_timer < INFINITY && 25127c478bd9Sstevel@tonic-gate SLIST_IS_EMPTY(ilm->ilm_pendsrcs))) { 25137c478bd9Sstevel@tonic-gate group_query: 25147c478bd9Sstevel@tonic-gate FREE_SLIST(ilm->ilm_pendsrcs); 25157c478bd9Sstevel@tonic-gate ilm->ilm_pendsrcs = NULL; 25167c478bd9Sstevel@tonic-gate } else { 25177c478bd9Sstevel@tonic-gate boolean_t overflow; 25187c478bd9Sstevel@tonic-gate slist_t *pktl; 25197c478bd9Sstevel@tonic-gate if (numsrc > MAX_FILTER_SIZE || 25207c478bd9Sstevel@tonic-gate (ilm->ilm_pendsrcs == NULL && 25217c478bd9Sstevel@tonic-gate (ilm->ilm_pendsrcs = l_alloc()) == NULL)) { 25227c478bd9Sstevel@tonic-gate /* 25237c478bd9Sstevel@tonic-gate * We've been sent more sources than 25247c478bd9Sstevel@tonic-gate * we can deal with; or we can't deal 25257c478bd9Sstevel@tonic-gate * with a source list at all. Revert 25267c478bd9Sstevel@tonic-gate * to a group specific query. 25277c478bd9Sstevel@tonic-gate */ 25287c478bd9Sstevel@tonic-gate goto group_query; 25297c478bd9Sstevel@tonic-gate } 25307c478bd9Sstevel@tonic-gate if ((pktl = l_alloc()) == NULL) 25317c478bd9Sstevel@tonic-gate goto group_query; 25327c478bd9Sstevel@tonic-gate pktl->sl_numsrc = numsrc; 25337c478bd9Sstevel@tonic-gate for (i = 0; i < numsrc; i++) 25347c478bd9Sstevel@tonic-gate pktl->sl_addr[i] = src_array[i]; 25357c478bd9Sstevel@tonic-gate l_union_in_a(ilm->ilm_pendsrcs, pktl, 25367c478bd9Sstevel@tonic-gate &overflow); 25377c478bd9Sstevel@tonic-gate l_free(pktl); 25387c478bd9Sstevel@tonic-gate if (overflow) 25397c478bd9Sstevel@tonic-gate goto group_query; 25407c478bd9Sstevel@tonic-gate } 25417c478bd9Sstevel@tonic-gate /* set timer to soonest value */ 25427c478bd9Sstevel@tonic-gate ilm->ilm_timer = MIN(ilm->ilm_timer, delay); 25437c478bd9Sstevel@tonic-gate if (ilm->ilm_timer < next) 25447c478bd9Sstevel@tonic-gate next = ilm->ilm_timer; 25457c478bd9Sstevel@tonic-gate break; 25467c478bd9Sstevel@tonic-gate } 25477c478bd9Sstevel@tonic-gate mutex_exit(&ill->ill_lock); 25487c478bd9Sstevel@tonic-gate } 25497c478bd9Sstevel@tonic-gate 25507c478bd9Sstevel@tonic-gate return (next); 25517c478bd9Sstevel@tonic-gate } 25527c478bd9Sstevel@tonic-gate 25537c478bd9Sstevel@tonic-gate /* 25547c478bd9Sstevel@tonic-gate * Send MLDv1 response packet with hoplimit 1 25557c478bd9Sstevel@tonic-gate */ 25567c478bd9Sstevel@tonic-gate static void 25577c478bd9Sstevel@tonic-gate mld_sendpkt(ilm_t *ilm, uchar_t type, const in6_addr_t *v6addr) 25587c478bd9Sstevel@tonic-gate { 25597c478bd9Sstevel@tonic-gate mblk_t *mp; 25607c478bd9Sstevel@tonic-gate mld_hdr_t *mldh; 25617c478bd9Sstevel@tonic-gate ip6_t *ip6h; 25627c478bd9Sstevel@tonic-gate ip6_hbh_t *ip6hbh; 25637c478bd9Sstevel@tonic-gate struct ip6_opt_router *ip6router; 25647c478bd9Sstevel@tonic-gate size_t size = IPV6_HDR_LEN + sizeof (mld_hdr_t); 25657c478bd9Sstevel@tonic-gate ill_t *ill = ilm->ilm_ill; /* Will be the "lower" ill */ 25667c478bd9Sstevel@tonic-gate ipif_t *ipif; 25677c478bd9Sstevel@tonic-gate ip6i_t *ip6i; 25687c478bd9Sstevel@tonic-gate 25697c478bd9Sstevel@tonic-gate /* 25707c478bd9Sstevel@tonic-gate * We need to place a router alert option in this packet. The length 25717c478bd9Sstevel@tonic-gate * of the options must be a multiple of 8. The hbh option header is 2 25727c478bd9Sstevel@tonic-gate * bytes followed by the 4 byte router alert option. That leaves 25737c478bd9Sstevel@tonic-gate * 2 bytes of pad for a total of 8 bytes. 25747c478bd9Sstevel@tonic-gate */ 25757c478bd9Sstevel@tonic-gate const int router_alert_length = 8; 25767c478bd9Sstevel@tonic-gate 25777c478bd9Sstevel@tonic-gate ASSERT(ill->ill_isv6); 25787c478bd9Sstevel@tonic-gate 25797c478bd9Sstevel@tonic-gate /* 25807c478bd9Sstevel@tonic-gate * We need to make sure that this packet does not get load balanced. 25817c478bd9Sstevel@tonic-gate * So, we allocate an ip6i_t and set ATTACH_IF. ip_wput_v6 and 25827c478bd9Sstevel@tonic-gate * ip_newroute_ipif_v6 knows how to handle such packets. 25837c478bd9Sstevel@tonic-gate * If it gets load balanced, switches supporting MLD snooping 25847c478bd9Sstevel@tonic-gate * (in the future) will send the packet that it receives for this 25857c478bd9Sstevel@tonic-gate * multicast group to the interface that we are sending on. As we have 25867c478bd9Sstevel@tonic-gate * joined the multicast group on this ill, by sending the packet out 25877c478bd9Sstevel@tonic-gate * on this ill, we receive all the packets back on this ill. 25887c478bd9Sstevel@tonic-gate */ 25897c478bd9Sstevel@tonic-gate size += sizeof (ip6i_t) + router_alert_length; 25907c478bd9Sstevel@tonic-gate mp = allocb(size, BPRI_HI); 25917c478bd9Sstevel@tonic-gate if (mp == NULL) 25927c478bd9Sstevel@tonic-gate return; 25937c478bd9Sstevel@tonic-gate bzero(mp->b_rptr, size); 25947c478bd9Sstevel@tonic-gate mp->b_wptr = mp->b_rptr + size; 25957c478bd9Sstevel@tonic-gate 25967c478bd9Sstevel@tonic-gate ip6i = (ip6i_t *)mp->b_rptr; 25977c478bd9Sstevel@tonic-gate ip6i->ip6i_vcf = IPV6_DEFAULT_VERS_AND_FLOW; 25987c478bd9Sstevel@tonic-gate ip6i->ip6i_nxt = IPPROTO_RAW; 25997c478bd9Sstevel@tonic-gate ip6i->ip6i_flags = IP6I_ATTACH_IF | IP6I_HOPLIMIT; 26007c478bd9Sstevel@tonic-gate ip6i->ip6i_ifindex = ill->ill_phyint->phyint_ifindex; 26017c478bd9Sstevel@tonic-gate 26027c478bd9Sstevel@tonic-gate ip6h = (ip6_t *)&ip6i[1]; 26037c478bd9Sstevel@tonic-gate ip6hbh = (struct ip6_hbh *)&ip6h[1]; 26047c478bd9Sstevel@tonic-gate ip6router = (struct ip6_opt_router *)&ip6hbh[1]; 26057c478bd9Sstevel@tonic-gate /* 26067c478bd9Sstevel@tonic-gate * A zero is a pad option of length 1. The bzero of the whole packet 26077c478bd9Sstevel@tonic-gate * above will pad between ip6router and mld. 26087c478bd9Sstevel@tonic-gate */ 26097c478bd9Sstevel@tonic-gate mldh = (mld_hdr_t *)((uint8_t *)ip6hbh + router_alert_length); 26107c478bd9Sstevel@tonic-gate 26117c478bd9Sstevel@tonic-gate mldh->mld_type = type; 26127c478bd9Sstevel@tonic-gate mldh->mld_addr = ilm->ilm_v6addr; 26137c478bd9Sstevel@tonic-gate 26147c478bd9Sstevel@tonic-gate ip6router->ip6or_type = IP6OPT_ROUTER_ALERT; 26157c478bd9Sstevel@tonic-gate ip6router->ip6or_len = 2; 26167c478bd9Sstevel@tonic-gate ip6router->ip6or_value[0] = 0; 26177c478bd9Sstevel@tonic-gate ip6router->ip6or_value[1] = IP6_ALERT_MLD; 26187c478bd9Sstevel@tonic-gate 26197c478bd9Sstevel@tonic-gate ip6hbh->ip6h_nxt = IPPROTO_ICMPV6; 26207c478bd9Sstevel@tonic-gate ip6hbh->ip6h_len = 0; 26217c478bd9Sstevel@tonic-gate 26227c478bd9Sstevel@tonic-gate ip6h->ip6_vcf = IPV6_DEFAULT_VERS_AND_FLOW; 26237c478bd9Sstevel@tonic-gate ip6h->ip6_plen = htons(sizeof (*mldh) + router_alert_length); 26247c478bd9Sstevel@tonic-gate ip6h->ip6_nxt = IPPROTO_HOPOPTS; 26257c478bd9Sstevel@tonic-gate ip6h->ip6_hops = MLD_HOP_LIMIT; 26267c478bd9Sstevel@tonic-gate if (v6addr == NULL) 26277c478bd9Sstevel@tonic-gate ip6h->ip6_dst = ilm->ilm_v6addr; 26287c478bd9Sstevel@tonic-gate else 26297c478bd9Sstevel@tonic-gate ip6h->ip6_dst = *v6addr; 26307c478bd9Sstevel@tonic-gate 26317c478bd9Sstevel@tonic-gate /* ipif returned by ipif_lookup_zoneid is link-local (if present) */ 26327c478bd9Sstevel@tonic-gate if (ipif_lookup_zoneid(ill, ilm->ilm_zoneid, IPIF_UP, &ipif)) { 26337c478bd9Sstevel@tonic-gate ip6h->ip6_src = ipif->ipif_v6src_addr; 26347c478bd9Sstevel@tonic-gate ipif_refrele(ipif); 26357c478bd9Sstevel@tonic-gate } else { 26367c478bd9Sstevel@tonic-gate /* Otherwise, use IPv6 default address selection. */ 26377c478bd9Sstevel@tonic-gate ip6h->ip6_src = ipv6_all_zeros; 26387c478bd9Sstevel@tonic-gate } 26397c478bd9Sstevel@tonic-gate 26407c478bd9Sstevel@tonic-gate /* 26417c478bd9Sstevel@tonic-gate * Prepare for checksum by putting icmp length in the icmp 26427c478bd9Sstevel@tonic-gate * checksum field. The checksum is calculated in ip_wput_v6. 26437c478bd9Sstevel@tonic-gate */ 26447c478bd9Sstevel@tonic-gate mldh->mld_cksum = htons(sizeof (*mldh)); 26457c478bd9Sstevel@tonic-gate 26467c478bd9Sstevel@tonic-gate /* 26477c478bd9Sstevel@tonic-gate * ip_wput will automatically loopback the multicast packet to 26487c478bd9Sstevel@tonic-gate * the conn if multicast loopback is enabled. 26497c478bd9Sstevel@tonic-gate * The MIB stats corresponding to this outgoing MLD packet 26507c478bd9Sstevel@tonic-gate * will be accounted for in ip_wput->ip_wput_v6->ip_wput_ire_v6 26517c478bd9Sstevel@tonic-gate * ->icmp_update_out_mib_v6 function call. 26527c478bd9Sstevel@tonic-gate */ 26537c478bd9Sstevel@tonic-gate (void) ip_output_v6(NULL, mp, ill->ill_wq, IP_WPUT); 26547c478bd9Sstevel@tonic-gate } 26557c478bd9Sstevel@tonic-gate 26567c478bd9Sstevel@tonic-gate /* 26577c478bd9Sstevel@tonic-gate * Sends an MLD_V2_LISTENER_REPORT message out the passed-in ill. The 26587c478bd9Sstevel@tonic-gate * report will contain one multicast address record for each element of 26597c478bd9Sstevel@tonic-gate * reclist. If this causes packet length to exceed ill->ill_max_frag, 26607c478bd9Sstevel@tonic-gate * multiple reports are sent. reclist is assumed to be made up of 26617c478bd9Sstevel@tonic-gate * buffers allocated by mcast_bldmrec(), and those buffers are freed here. 26627c478bd9Sstevel@tonic-gate */ 26637c478bd9Sstevel@tonic-gate static void 26647c478bd9Sstevel@tonic-gate mldv2_sendrpt(ill_t *ill, mrec_t *reclist) 26657c478bd9Sstevel@tonic-gate { 26667c478bd9Sstevel@tonic-gate mblk_t *mp; 26677c478bd9Sstevel@tonic-gate mld2r_t *mld2r; 26687c478bd9Sstevel@tonic-gate mld2mar_t *mld2mar; 26697c478bd9Sstevel@tonic-gate in6_addr_t *srcarray; 26707c478bd9Sstevel@tonic-gate ip6_t *ip6h; 26717c478bd9Sstevel@tonic-gate ip6_hbh_t *ip6hbh; 26727c478bd9Sstevel@tonic-gate ip6i_t *ip6i; 26737c478bd9Sstevel@tonic-gate struct ip6_opt_router *ip6router; 26747c478bd9Sstevel@tonic-gate size_t size, optlen, padlen, icmpsize, rsize; 26757c478bd9Sstevel@tonic-gate ipif_t *ipif; 26767c478bd9Sstevel@tonic-gate int i, numrec, more_src_cnt; 26777c478bd9Sstevel@tonic-gate mrec_t *rp, *cur_reclist; 26787c478bd9Sstevel@tonic-gate mrec_t *next_reclist = reclist; 26797c478bd9Sstevel@tonic-gate boolean_t morepkts; 26807c478bd9Sstevel@tonic-gate 26817c478bd9Sstevel@tonic-gate /* If there aren't any records, there's nothing to send */ 26827c478bd9Sstevel@tonic-gate if (reclist == NULL) 26837c478bd9Sstevel@tonic-gate return; 26847c478bd9Sstevel@tonic-gate 26857c478bd9Sstevel@tonic-gate ASSERT(ill->ill_isv6); 26867c478bd9Sstevel@tonic-gate 26877c478bd9Sstevel@tonic-gate /* 26887c478bd9Sstevel@tonic-gate * Total option length (optlen + padlen) must be a multiple of 26897c478bd9Sstevel@tonic-gate * 8 bytes. We assume here that optlen <= 8, so the total option 26907c478bd9Sstevel@tonic-gate * length will be 8. Assert this in case anything ever changes. 26917c478bd9Sstevel@tonic-gate */ 26927c478bd9Sstevel@tonic-gate optlen = sizeof (ip6_hbh_t) + sizeof (struct ip6_opt_router); 26937c478bd9Sstevel@tonic-gate ASSERT(optlen <= 8); 26947c478bd9Sstevel@tonic-gate padlen = 8 - optlen; 26957c478bd9Sstevel@tonic-gate nextpkt: 26967c478bd9Sstevel@tonic-gate icmpsize = sizeof (mld2r_t); 26977c478bd9Sstevel@tonic-gate size = IPV6_HDR_LEN + optlen + padlen + icmpsize; 26987c478bd9Sstevel@tonic-gate morepkts = B_FALSE; 26997c478bd9Sstevel@tonic-gate more_src_cnt = 0; 27007c478bd9Sstevel@tonic-gate for (rp = cur_reclist = next_reclist, numrec = 0; rp != NULL; 27017c478bd9Sstevel@tonic-gate rp = rp->mrec_next, numrec++) { 27027c478bd9Sstevel@tonic-gate rsize = sizeof (mld2mar_t) + 27037c478bd9Sstevel@tonic-gate (rp->mrec_srcs.sl_numsrc * sizeof (in6_addr_t)); 27047c478bd9Sstevel@tonic-gate if (size + rsize > ill->ill_max_frag) { 27057c478bd9Sstevel@tonic-gate if (rp == cur_reclist) { 27067c478bd9Sstevel@tonic-gate /* 27077c478bd9Sstevel@tonic-gate * If the first mrec we looked at is too big 27087c478bd9Sstevel@tonic-gate * to fit in a single packet (i.e the source 27097c478bd9Sstevel@tonic-gate * list is too big), we must either truncate 27107c478bd9Sstevel@tonic-gate * the list (if TO_EX or IS_EX), or send 27117c478bd9Sstevel@tonic-gate * multiple reports for the same group (all 27127c478bd9Sstevel@tonic-gate * other types). 27137c478bd9Sstevel@tonic-gate */ 27147c478bd9Sstevel@tonic-gate int srcspace, srcsperpkt; 27157c478bd9Sstevel@tonic-gate srcspace = ill->ill_max_frag - 27167c478bd9Sstevel@tonic-gate (size + sizeof (mld2mar_t)); 27177c478bd9Sstevel@tonic-gate srcsperpkt = srcspace / sizeof (in6_addr_t); 27187c478bd9Sstevel@tonic-gate /* 27197c478bd9Sstevel@tonic-gate * Increment icmpsize and size, because we will 27207c478bd9Sstevel@tonic-gate * be sending a record for the mrec we're 27217c478bd9Sstevel@tonic-gate * looking at now. 27227c478bd9Sstevel@tonic-gate */ 27237c478bd9Sstevel@tonic-gate rsize = sizeof (mld2mar_t) + 27247c478bd9Sstevel@tonic-gate (srcsperpkt * sizeof (in6_addr_t)); 27257c478bd9Sstevel@tonic-gate icmpsize += rsize; 27267c478bd9Sstevel@tonic-gate size += rsize; 27277c478bd9Sstevel@tonic-gate if (rp->mrec_type == MODE_IS_EXCLUDE || 27287c478bd9Sstevel@tonic-gate rp->mrec_type == CHANGE_TO_EXCLUDE) { 27297c478bd9Sstevel@tonic-gate rp->mrec_srcs.sl_numsrc = srcsperpkt; 27307c478bd9Sstevel@tonic-gate if (rp->mrec_next == NULL) { 27317c478bd9Sstevel@tonic-gate /* no more packets to send */ 27327c478bd9Sstevel@tonic-gate break; 27337c478bd9Sstevel@tonic-gate } else { 27347c478bd9Sstevel@tonic-gate /* 27357c478bd9Sstevel@tonic-gate * more packets, but we're 27367c478bd9Sstevel@tonic-gate * done with this mrec. 27377c478bd9Sstevel@tonic-gate */ 27387c478bd9Sstevel@tonic-gate next_reclist = rp->mrec_next; 27397c478bd9Sstevel@tonic-gate } 27407c478bd9Sstevel@tonic-gate } else { 27417c478bd9Sstevel@tonic-gate more_src_cnt = rp->mrec_srcs.sl_numsrc 27427c478bd9Sstevel@tonic-gate - srcsperpkt; 27437c478bd9Sstevel@tonic-gate rp->mrec_srcs.sl_numsrc = srcsperpkt; 27447c478bd9Sstevel@tonic-gate /* 27457c478bd9Sstevel@tonic-gate * We'll fix up this mrec (remove the 27467c478bd9Sstevel@tonic-gate * srcs we've already sent) before 27477c478bd9Sstevel@tonic-gate * returning to nextpkt above. 27487c478bd9Sstevel@tonic-gate */ 27497c478bd9Sstevel@tonic-gate next_reclist = rp; 27507c478bd9Sstevel@tonic-gate } 27517c478bd9Sstevel@tonic-gate } else { 27527c478bd9Sstevel@tonic-gate next_reclist = rp; 27537c478bd9Sstevel@tonic-gate } 27547c478bd9Sstevel@tonic-gate morepkts = B_TRUE; 27557c478bd9Sstevel@tonic-gate break; 27567c478bd9Sstevel@tonic-gate } 27577c478bd9Sstevel@tonic-gate icmpsize += rsize; 27587c478bd9Sstevel@tonic-gate size += rsize; 27597c478bd9Sstevel@tonic-gate } 27607c478bd9Sstevel@tonic-gate 27617c478bd9Sstevel@tonic-gate /* 27627c478bd9Sstevel@tonic-gate * We need to make sure that this packet does not get load balanced. 27637c478bd9Sstevel@tonic-gate * So, we allocate an ip6i_t and set ATTACH_IF. ip_wput_v6 and 27647c478bd9Sstevel@tonic-gate * ip_newroute_ipif_v6 know how to handle such packets. 27657c478bd9Sstevel@tonic-gate * If it gets load balanced, switches supporting MLD snooping 27667c478bd9Sstevel@tonic-gate * (in the future) will send the packet that it receives for this 27677c478bd9Sstevel@tonic-gate * multicast group to the interface that we are sending on. As we have 27687c478bd9Sstevel@tonic-gate * joined the multicast group on this ill, by sending the packet out 27697c478bd9Sstevel@tonic-gate * on this ill, we receive all the packets back on this ill. 27707c478bd9Sstevel@tonic-gate */ 27717c478bd9Sstevel@tonic-gate size += sizeof (ip6i_t); 27727c478bd9Sstevel@tonic-gate mp = allocb(size, BPRI_HI); 27737c478bd9Sstevel@tonic-gate if (mp == NULL) 27747c478bd9Sstevel@tonic-gate goto free_reclist; 27757c478bd9Sstevel@tonic-gate bzero(mp->b_rptr, size); 27767c478bd9Sstevel@tonic-gate mp->b_wptr = mp->b_rptr + size; 27777c478bd9Sstevel@tonic-gate 27787c478bd9Sstevel@tonic-gate ip6i = (ip6i_t *)mp->b_rptr; 27797c478bd9Sstevel@tonic-gate ip6i->ip6i_vcf = IPV6_DEFAULT_VERS_AND_FLOW; 27807c478bd9Sstevel@tonic-gate ip6i->ip6i_nxt = IPPROTO_RAW; 27817c478bd9Sstevel@tonic-gate ip6i->ip6i_flags = IP6I_ATTACH_IF; 27827c478bd9Sstevel@tonic-gate ip6i->ip6i_ifindex = ill->ill_phyint->phyint_ifindex; 27837c478bd9Sstevel@tonic-gate 27847c478bd9Sstevel@tonic-gate ip6h = (ip6_t *)&(ip6i[1]); 27857c478bd9Sstevel@tonic-gate ip6hbh = (ip6_hbh_t *)&(ip6h[1]); 27867c478bd9Sstevel@tonic-gate ip6router = (struct ip6_opt_router *)&(ip6hbh[1]); 27877c478bd9Sstevel@tonic-gate mld2r = (mld2r_t *)((uint8_t *)ip6hbh + optlen + padlen); 27887c478bd9Sstevel@tonic-gate mld2mar = (mld2mar_t *)&(mld2r[1]); 27897c478bd9Sstevel@tonic-gate 27907c478bd9Sstevel@tonic-gate ip6h->ip6_vcf = IPV6_DEFAULT_VERS_AND_FLOW; 27917c478bd9Sstevel@tonic-gate ip6h->ip6_plen = htons(optlen + padlen + icmpsize); 27927c478bd9Sstevel@tonic-gate ip6h->ip6_nxt = IPPROTO_HOPOPTS; 27937c478bd9Sstevel@tonic-gate ip6h->ip6_hops = MLD_HOP_LIMIT; 27947c478bd9Sstevel@tonic-gate ip6h->ip6_dst = ipv6_all_v2rtrs_mcast; 27957c478bd9Sstevel@tonic-gate /* ipif returned by ipif_lookup_zoneid is link-local (if present) */ 27967c478bd9Sstevel@tonic-gate if (ipif_lookup_zoneid(ill, ALL_ZONES, IPIF_UP, &ipif)) { 27977c478bd9Sstevel@tonic-gate ip6h->ip6_src = ipif->ipif_v6src_addr; 27987c478bd9Sstevel@tonic-gate ipif_refrele(ipif); 27997c478bd9Sstevel@tonic-gate } else { 28007c478bd9Sstevel@tonic-gate /* otherwise, use IPv6 default address selection. */ 28017c478bd9Sstevel@tonic-gate ip6h->ip6_src = ipv6_all_zeros; 28027c478bd9Sstevel@tonic-gate } 28037c478bd9Sstevel@tonic-gate 28047c478bd9Sstevel@tonic-gate ip6hbh->ip6h_nxt = IPPROTO_ICMPV6; 28057c478bd9Sstevel@tonic-gate /* 28067c478bd9Sstevel@tonic-gate * ip6h_len is the number of 8-byte words, not including the first 28077c478bd9Sstevel@tonic-gate * 8 bytes; we've assumed optlen + padlen == 8 bytes; hence len = 0. 28087c478bd9Sstevel@tonic-gate */ 28097c478bd9Sstevel@tonic-gate ip6hbh->ip6h_len = 0; 28107c478bd9Sstevel@tonic-gate 28117c478bd9Sstevel@tonic-gate ip6router->ip6or_type = IP6OPT_ROUTER_ALERT; 28127c478bd9Sstevel@tonic-gate ip6router->ip6or_len = 2; 28137c478bd9Sstevel@tonic-gate ip6router->ip6or_value[0] = 0; 28147c478bd9Sstevel@tonic-gate ip6router->ip6or_value[1] = IP6_ALERT_MLD; 28157c478bd9Sstevel@tonic-gate 28167c478bd9Sstevel@tonic-gate mld2r->mld2r_type = MLD_V2_LISTENER_REPORT; 28177c478bd9Sstevel@tonic-gate mld2r->mld2r_nummar = htons(numrec); 28187c478bd9Sstevel@tonic-gate /* 28197c478bd9Sstevel@tonic-gate * Prepare for the checksum by putting icmp length in the icmp 28207c478bd9Sstevel@tonic-gate * checksum field. The checksum is calculated in ip_wput_v6. 28217c478bd9Sstevel@tonic-gate */ 28227c478bd9Sstevel@tonic-gate mld2r->mld2r_cksum = htons(icmpsize); 28237c478bd9Sstevel@tonic-gate 28247c478bd9Sstevel@tonic-gate for (rp = cur_reclist; rp != NULL; rp = rp->mrec_next) { 28257c478bd9Sstevel@tonic-gate mld2mar->mld2mar_type = rp->mrec_type; 28267c478bd9Sstevel@tonic-gate mld2mar->mld2mar_auxlen = 0; 28277c478bd9Sstevel@tonic-gate mld2mar->mld2mar_numsrc = htons(rp->mrec_srcs.sl_numsrc); 28287c478bd9Sstevel@tonic-gate mld2mar->mld2mar_group = rp->mrec_group; 28297c478bd9Sstevel@tonic-gate srcarray = (in6_addr_t *)&(mld2mar[1]); 28307c478bd9Sstevel@tonic-gate 28317c478bd9Sstevel@tonic-gate for (i = 0; i < rp->mrec_srcs.sl_numsrc; i++) 28327c478bd9Sstevel@tonic-gate srcarray[i] = rp->mrec_srcs.sl_addr[i]; 28337c478bd9Sstevel@tonic-gate 28347c478bd9Sstevel@tonic-gate mld2mar = (mld2mar_t *)&(srcarray[i]); 28357c478bd9Sstevel@tonic-gate } 28367c478bd9Sstevel@tonic-gate 28377c478bd9Sstevel@tonic-gate /* 28387c478bd9Sstevel@tonic-gate * ip_wput will automatically loopback the multicast packet to 28397c478bd9Sstevel@tonic-gate * the conn if multicast loopback is enabled. 28407c478bd9Sstevel@tonic-gate * The MIB stats corresponding to this outgoing MLD packet 28417c478bd9Sstevel@tonic-gate * will be accounted for in ip_wput->ip_wput_v6->ip_wput_ire_v6 28427c478bd9Sstevel@tonic-gate * ->icmp_update_out_mib_v6 function call. 28437c478bd9Sstevel@tonic-gate */ 28447c478bd9Sstevel@tonic-gate (void) ip_output_v6(NULL, mp, ill->ill_wq, IP_WPUT); 28457c478bd9Sstevel@tonic-gate 28467c478bd9Sstevel@tonic-gate if (morepkts) { 28477c478bd9Sstevel@tonic-gate if (more_src_cnt > 0) { 28487c478bd9Sstevel@tonic-gate int index, mvsize; 28497c478bd9Sstevel@tonic-gate slist_t *sl = &next_reclist->mrec_srcs; 28507c478bd9Sstevel@tonic-gate index = sl->sl_numsrc; 28517c478bd9Sstevel@tonic-gate mvsize = more_src_cnt * sizeof (in6_addr_t); 28527c478bd9Sstevel@tonic-gate (void) memmove(&sl->sl_addr[0], &sl->sl_addr[index], 28537c478bd9Sstevel@tonic-gate mvsize); 28547c478bd9Sstevel@tonic-gate sl->sl_numsrc = more_src_cnt; 28557c478bd9Sstevel@tonic-gate } 28567c478bd9Sstevel@tonic-gate goto nextpkt; 28577c478bd9Sstevel@tonic-gate } 28587c478bd9Sstevel@tonic-gate 28597c478bd9Sstevel@tonic-gate free_reclist: 28607c478bd9Sstevel@tonic-gate while (reclist != NULL) { 28617c478bd9Sstevel@tonic-gate rp = reclist->mrec_next; 28627c478bd9Sstevel@tonic-gate mi_free(reclist); 28637c478bd9Sstevel@tonic-gate reclist = rp; 28647c478bd9Sstevel@tonic-gate } 28657c478bd9Sstevel@tonic-gate } 28667c478bd9Sstevel@tonic-gate 28677c478bd9Sstevel@tonic-gate static mrec_t * 28687c478bd9Sstevel@tonic-gate mcast_bldmrec(mcast_record_t type, in6_addr_t *grp, slist_t *srclist, 28697c478bd9Sstevel@tonic-gate mrec_t *next) 28707c478bd9Sstevel@tonic-gate { 28717c478bd9Sstevel@tonic-gate mrec_t *rp; 28727c478bd9Sstevel@tonic-gate int i; 28737c478bd9Sstevel@tonic-gate 28747c478bd9Sstevel@tonic-gate if ((type == ALLOW_NEW_SOURCES || type == BLOCK_OLD_SOURCES) && 28757c478bd9Sstevel@tonic-gate SLIST_IS_EMPTY(srclist)) 28767c478bd9Sstevel@tonic-gate return (next); 28777c478bd9Sstevel@tonic-gate 28787c478bd9Sstevel@tonic-gate rp = (mrec_t *)mi_alloc(sizeof (mrec_t), BPRI_HI); 28797c478bd9Sstevel@tonic-gate if (rp == NULL) 28807c478bd9Sstevel@tonic-gate return (next); 28817c478bd9Sstevel@tonic-gate 28827c478bd9Sstevel@tonic-gate rp->mrec_next = next; 28837c478bd9Sstevel@tonic-gate rp->mrec_type = type; 28847c478bd9Sstevel@tonic-gate rp->mrec_auxlen = 0; 28857c478bd9Sstevel@tonic-gate rp->mrec_group = *grp; 28867c478bd9Sstevel@tonic-gate if (srclist == NULL) { 28877c478bd9Sstevel@tonic-gate rp->mrec_srcs.sl_numsrc = 0; 28887c478bd9Sstevel@tonic-gate } else { 28897c478bd9Sstevel@tonic-gate rp->mrec_srcs.sl_numsrc = srclist->sl_numsrc; 28907c478bd9Sstevel@tonic-gate for (i = 0; i < srclist->sl_numsrc; i++) 28917c478bd9Sstevel@tonic-gate rp->mrec_srcs.sl_addr[i] = srclist->sl_addr[i]; 28927c478bd9Sstevel@tonic-gate } 28937c478bd9Sstevel@tonic-gate 28947c478bd9Sstevel@tonic-gate return (rp); 28957c478bd9Sstevel@tonic-gate } 28967c478bd9Sstevel@tonic-gate 28977c478bd9Sstevel@tonic-gate /* 28987c478bd9Sstevel@tonic-gate * Set up initial retransmit state. If memory cannot be allocated for 28997c478bd9Sstevel@tonic-gate * the source lists, simply create as much state as is possible; memory 29007c478bd9Sstevel@tonic-gate * allocation failures are considered one type of transient error that 29017c478bd9Sstevel@tonic-gate * the retransmissions are designed to overcome (and if they aren't 29027c478bd9Sstevel@tonic-gate * transient, there are bigger problems than failing to notify the 29037c478bd9Sstevel@tonic-gate * router about multicast group membership state changes). 29047c478bd9Sstevel@tonic-gate */ 29057c478bd9Sstevel@tonic-gate static void 29067c478bd9Sstevel@tonic-gate mcast_init_rtx(ill_t *ill, rtx_state_t *rtxp, mcast_record_t rtype, 29077c478bd9Sstevel@tonic-gate slist_t *flist) 29087c478bd9Sstevel@tonic-gate { 29097c478bd9Sstevel@tonic-gate /* 29107c478bd9Sstevel@tonic-gate * There are only three possibilities for rtype: 29117c478bd9Sstevel@tonic-gate * New join, transition from INCLUDE {} to INCLUDE {flist} 29127c478bd9Sstevel@tonic-gate * => rtype is ALLOW_NEW_SOURCES 29137c478bd9Sstevel@tonic-gate * New join, transition from INCLUDE {} to EXCLUDE {flist} 29147c478bd9Sstevel@tonic-gate * => rtype is CHANGE_TO_EXCLUDE 29157c478bd9Sstevel@tonic-gate * State change that involves a filter mode change 29167c478bd9Sstevel@tonic-gate * => rtype is either CHANGE_TO_INCLUDE or CHANGE_TO_EXCLUDE 29177c478bd9Sstevel@tonic-gate */ 29187c478bd9Sstevel@tonic-gate ASSERT(rtype == CHANGE_TO_EXCLUDE || rtype == CHANGE_TO_INCLUDE || 29197c478bd9Sstevel@tonic-gate rtype == ALLOW_NEW_SOURCES); 29207c478bd9Sstevel@tonic-gate 29217c478bd9Sstevel@tonic-gate rtxp->rtx_cnt = ill->ill_mcast_rv; 29227c478bd9Sstevel@tonic-gate 29237c478bd9Sstevel@tonic-gate switch (rtype) { 29247c478bd9Sstevel@tonic-gate case CHANGE_TO_EXCLUDE: 29257c478bd9Sstevel@tonic-gate rtxp->rtx_fmode_cnt = ill->ill_mcast_rv; 29267c478bd9Sstevel@tonic-gate CLEAR_SLIST(rtxp->rtx_allow); 29277c478bd9Sstevel@tonic-gate COPY_SLIST(flist, rtxp->rtx_block); 29287c478bd9Sstevel@tonic-gate break; 29297c478bd9Sstevel@tonic-gate case ALLOW_NEW_SOURCES: 29307c478bd9Sstevel@tonic-gate case CHANGE_TO_INCLUDE: 29317c478bd9Sstevel@tonic-gate rtxp->rtx_fmode_cnt = 29327c478bd9Sstevel@tonic-gate rtype == ALLOW_NEW_SOURCES ? 0 : ill->ill_mcast_rv; 29337c478bd9Sstevel@tonic-gate CLEAR_SLIST(rtxp->rtx_block); 29347c478bd9Sstevel@tonic-gate COPY_SLIST(flist, rtxp->rtx_allow); 29357c478bd9Sstevel@tonic-gate break; 29367c478bd9Sstevel@tonic-gate } 29377c478bd9Sstevel@tonic-gate } 29387c478bd9Sstevel@tonic-gate 29397c478bd9Sstevel@tonic-gate /* 29407c478bd9Sstevel@tonic-gate * The basic strategy here, as extrapolated from RFC 3810 section 6.1 and 29417c478bd9Sstevel@tonic-gate * RFC 3376 section 5.1, covers three cases: 29427c478bd9Sstevel@tonic-gate * * The current state change is a filter mode change 29437c478bd9Sstevel@tonic-gate * Set filter mode retransmit counter; set retransmit allow or 29447c478bd9Sstevel@tonic-gate * block list to new source list as appropriate, and clear the 29457c478bd9Sstevel@tonic-gate * retransmit list that was not set; send TO_IN or TO_EX with 29467c478bd9Sstevel@tonic-gate * new source list. 29477c478bd9Sstevel@tonic-gate * * The current state change is a source list change, but the filter 29487c478bd9Sstevel@tonic-gate * mode retransmit counter is > 0 29497c478bd9Sstevel@tonic-gate * Decrement filter mode retransmit counter; set retransmit 29507c478bd9Sstevel@tonic-gate * allow or block list to new source list as appropriate, 29517c478bd9Sstevel@tonic-gate * and clear the retransmit list that was not set; send TO_IN 29527c478bd9Sstevel@tonic-gate * or TO_EX with new source list. 29537c478bd9Sstevel@tonic-gate * * The current state change is a source list change, and the filter 29547c478bd9Sstevel@tonic-gate * mode retransmit counter is 0. 29557c478bd9Sstevel@tonic-gate * Merge existing rtx allow and block lists with new state: 29567c478bd9Sstevel@tonic-gate * rtx_allow = (new allow + rtx_allow) - new block 29577c478bd9Sstevel@tonic-gate * rtx_block = (new block + rtx_block) - new allow 29587c478bd9Sstevel@tonic-gate * Send ALLOW and BLOCK records for new retransmit lists; 29597c478bd9Sstevel@tonic-gate * decrement retransmit counter. 29607c478bd9Sstevel@tonic-gate * 29617c478bd9Sstevel@tonic-gate * As is the case for mcast_init_rtx(), memory allocation failures are 29627c478bd9Sstevel@tonic-gate * acceptable; we just create as much state as we can. 29637c478bd9Sstevel@tonic-gate */ 29647c478bd9Sstevel@tonic-gate static mrec_t * 29657c478bd9Sstevel@tonic-gate mcast_merge_rtx(ilm_t *ilm, mrec_t *mreclist, slist_t *flist) 29667c478bd9Sstevel@tonic-gate { 29677c478bd9Sstevel@tonic-gate ill_t *ill; 29687c478bd9Sstevel@tonic-gate rtx_state_t *rtxp = &ilm->ilm_rtx; 29697c478bd9Sstevel@tonic-gate mcast_record_t txtype; 29707c478bd9Sstevel@tonic-gate mrec_t *rp, *rpnext, *rtnmrec; 29717c478bd9Sstevel@tonic-gate boolean_t ovf; 29727c478bd9Sstevel@tonic-gate 29737c478bd9Sstevel@tonic-gate ill = (ilm->ilm_ill == NULL ? ilm->ilm_ipif->ipif_ill : ilm->ilm_ill); 29747c478bd9Sstevel@tonic-gate 29757c478bd9Sstevel@tonic-gate if (mreclist == NULL) 29767c478bd9Sstevel@tonic-gate return (mreclist); 29777c478bd9Sstevel@tonic-gate 29787c478bd9Sstevel@tonic-gate /* 29797c478bd9Sstevel@tonic-gate * A filter mode change is indicated by a single mrec, which is 29807c478bd9Sstevel@tonic-gate * either TO_IN or TO_EX. In this case, we just need to set new 29817c478bd9Sstevel@tonic-gate * retransmit state as if this were an initial join. There is 29827c478bd9Sstevel@tonic-gate * no change to the mrec list. 29837c478bd9Sstevel@tonic-gate */ 29847c478bd9Sstevel@tonic-gate if (mreclist->mrec_type == CHANGE_TO_INCLUDE || 29857c478bd9Sstevel@tonic-gate mreclist->mrec_type == CHANGE_TO_EXCLUDE) { 29867c478bd9Sstevel@tonic-gate mcast_init_rtx(ill, rtxp, mreclist->mrec_type, 29877c478bd9Sstevel@tonic-gate &mreclist->mrec_srcs); 29887c478bd9Sstevel@tonic-gate return (mreclist); 29897c478bd9Sstevel@tonic-gate } 29907c478bd9Sstevel@tonic-gate 29917c478bd9Sstevel@tonic-gate /* 29927c478bd9Sstevel@tonic-gate * Only the source list has changed 29937c478bd9Sstevel@tonic-gate */ 29947c478bd9Sstevel@tonic-gate rtxp->rtx_cnt = ill->ill_mcast_rv; 29957c478bd9Sstevel@tonic-gate if (rtxp->rtx_fmode_cnt > 0) { 29967c478bd9Sstevel@tonic-gate /* but we're still sending filter mode change reports */ 29977c478bd9Sstevel@tonic-gate rtxp->rtx_fmode_cnt--; 29987c478bd9Sstevel@tonic-gate if (ilm->ilm_fmode == MODE_IS_INCLUDE) { 29997c478bd9Sstevel@tonic-gate CLEAR_SLIST(rtxp->rtx_block); 30007c478bd9Sstevel@tonic-gate COPY_SLIST(flist, rtxp->rtx_allow); 30017c478bd9Sstevel@tonic-gate txtype = CHANGE_TO_INCLUDE; 30027c478bd9Sstevel@tonic-gate } else { 30037c478bd9Sstevel@tonic-gate CLEAR_SLIST(rtxp->rtx_allow); 30047c478bd9Sstevel@tonic-gate COPY_SLIST(flist, rtxp->rtx_block); 30057c478bd9Sstevel@tonic-gate txtype = CHANGE_TO_EXCLUDE; 30067c478bd9Sstevel@tonic-gate } 30077c478bd9Sstevel@tonic-gate /* overwrite first mrec with new info */ 30087c478bd9Sstevel@tonic-gate mreclist->mrec_type = txtype; 30097c478bd9Sstevel@tonic-gate l_copy(flist, &mreclist->mrec_srcs); 30107c478bd9Sstevel@tonic-gate /* then free any remaining mrecs */ 30117c478bd9Sstevel@tonic-gate for (rp = mreclist->mrec_next; rp != NULL; rp = rpnext) { 30127c478bd9Sstevel@tonic-gate rpnext = rp->mrec_next; 30137c478bd9Sstevel@tonic-gate mi_free(rp); 30147c478bd9Sstevel@tonic-gate } 30157c478bd9Sstevel@tonic-gate mreclist->mrec_next = NULL; 30167c478bd9Sstevel@tonic-gate rtnmrec = mreclist; 30177c478bd9Sstevel@tonic-gate } else { 30187c478bd9Sstevel@tonic-gate mrec_t *allow_mrec, *block_mrec; 30197c478bd9Sstevel@tonic-gate /* 30207c478bd9Sstevel@tonic-gate * Just send the source change reports; but we need to 30217c478bd9Sstevel@tonic-gate * recalculate the ALLOW and BLOCK lists based on previous 30227c478bd9Sstevel@tonic-gate * state and new changes. 30237c478bd9Sstevel@tonic-gate */ 30247c478bd9Sstevel@tonic-gate rtnmrec = mreclist; 30257c478bd9Sstevel@tonic-gate allow_mrec = block_mrec = NULL; 30267c478bd9Sstevel@tonic-gate for (rp = mreclist; rp != NULL; rp = rp->mrec_next) { 30277c478bd9Sstevel@tonic-gate ASSERT(rp->mrec_type == ALLOW_NEW_SOURCES || 30287c478bd9Sstevel@tonic-gate rp->mrec_type == BLOCK_OLD_SOURCES); 30297c478bd9Sstevel@tonic-gate if (rp->mrec_type == ALLOW_NEW_SOURCES) 30307c478bd9Sstevel@tonic-gate allow_mrec = rp; 30317c478bd9Sstevel@tonic-gate else 30327c478bd9Sstevel@tonic-gate block_mrec = rp; 30337c478bd9Sstevel@tonic-gate } 30347c478bd9Sstevel@tonic-gate /* 30357c478bd9Sstevel@tonic-gate * Perform calculations: 30367c478bd9Sstevel@tonic-gate * new_allow = mrec_allow + (rtx_allow - mrec_block) 30377c478bd9Sstevel@tonic-gate * new_block = mrec_block + (rtx_block - mrec_allow) 30387c478bd9Sstevel@tonic-gate * 30397c478bd9Sstevel@tonic-gate * Each calc requires two steps, for example: 30407c478bd9Sstevel@tonic-gate * rtx_allow = rtx_allow - mrec_block; 30417c478bd9Sstevel@tonic-gate * new_allow = mrec_allow + rtx_allow; 30427c478bd9Sstevel@tonic-gate * 30437c478bd9Sstevel@tonic-gate * Store results in mrec lists, and then copy into rtx lists. 30447c478bd9Sstevel@tonic-gate * We do it in this order in case the rtx list hasn't been 30457c478bd9Sstevel@tonic-gate * alloc'd yet; if it hasn't and our alloc fails, that's okay, 30467c478bd9Sstevel@tonic-gate * Overflows are also okay. 30477c478bd9Sstevel@tonic-gate */ 30487c478bd9Sstevel@tonic-gate if (block_mrec != NULL) { 30497c478bd9Sstevel@tonic-gate l_difference_in_a(rtxp->rtx_allow, 30507c478bd9Sstevel@tonic-gate &block_mrec->mrec_srcs); 30517c478bd9Sstevel@tonic-gate } 30527c478bd9Sstevel@tonic-gate if (allow_mrec != NULL) { 30537c478bd9Sstevel@tonic-gate l_difference_in_a(rtxp->rtx_block, 30547c478bd9Sstevel@tonic-gate &allow_mrec->mrec_srcs); 30557c478bd9Sstevel@tonic-gate l_union_in_a(&allow_mrec->mrec_srcs, rtxp->rtx_allow, 30567c478bd9Sstevel@tonic-gate &ovf); 30577c478bd9Sstevel@tonic-gate } 30587c478bd9Sstevel@tonic-gate if (block_mrec != NULL) { 30597c478bd9Sstevel@tonic-gate l_union_in_a(&block_mrec->mrec_srcs, rtxp->rtx_block, 30607c478bd9Sstevel@tonic-gate &ovf); 30617c478bd9Sstevel@tonic-gate COPY_SLIST(&block_mrec->mrec_srcs, rtxp->rtx_block); 30627c478bd9Sstevel@tonic-gate } else { 30637c478bd9Sstevel@tonic-gate rtnmrec = mcast_bldmrec(BLOCK_OLD_SOURCES, 30647c478bd9Sstevel@tonic-gate &ilm->ilm_v6addr, rtxp->rtx_block, allow_mrec); 30657c478bd9Sstevel@tonic-gate } 30667c478bd9Sstevel@tonic-gate if (allow_mrec != NULL) { 30677c478bd9Sstevel@tonic-gate COPY_SLIST(&allow_mrec->mrec_srcs, rtxp->rtx_allow); 30687c478bd9Sstevel@tonic-gate } else { 30697c478bd9Sstevel@tonic-gate rtnmrec = mcast_bldmrec(ALLOW_NEW_SOURCES, 30707c478bd9Sstevel@tonic-gate &ilm->ilm_v6addr, rtxp->rtx_allow, block_mrec); 30717c478bd9Sstevel@tonic-gate } 30727c478bd9Sstevel@tonic-gate } 30737c478bd9Sstevel@tonic-gate 30747c478bd9Sstevel@tonic-gate return (rtnmrec); 30757c478bd9Sstevel@tonic-gate } 3076