1fe267a55SPedro F. Giffuni /*- 2fe267a55SPedro F. Giffuni * SPDX-License-Identifier: BSD-3-Clause 3fe267a55SPedro F. Giffuni * 48f002c6cSBruce M Simpson * Copyright (c) 2009 Bruce Simpson. 58f002c6cSBruce M Simpson * All rights reserved. 68f002c6cSBruce M Simpson * 78f002c6cSBruce M Simpson * Redistribution and use in source and binary forms, with or without 88f002c6cSBruce M Simpson * modification, are permitted provided that the following conditions 98f002c6cSBruce M Simpson * are met: 108f002c6cSBruce M Simpson * 1. Redistributions of source code must retain the above copyright 118f002c6cSBruce M Simpson * notice, this list of conditions and the following disclaimer. 128f002c6cSBruce M Simpson * 2. Redistributions in binary form must reproduce the above copyright 138f002c6cSBruce M Simpson * notice, this list of conditions and the following disclaimer in the 148f002c6cSBruce M Simpson * documentation and/or other materials provided with the distribution. 158f002c6cSBruce M Simpson * 3. The name of the author may not be used to endorse or promote 168f002c6cSBruce M Simpson * products derived from this software without specific prior written 178f002c6cSBruce M Simpson * permission. 188f002c6cSBruce M Simpson * 198f002c6cSBruce M Simpson * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 208f002c6cSBruce M Simpson * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 218f002c6cSBruce M Simpson * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 228f002c6cSBruce M Simpson * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 238f002c6cSBruce M Simpson * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 248f002c6cSBruce M Simpson * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 258f002c6cSBruce M Simpson * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 268f002c6cSBruce M Simpson * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 278f002c6cSBruce M Simpson * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 288f002c6cSBruce M Simpson * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 298f002c6cSBruce M Simpson * SUCH DAMAGE. 308f002c6cSBruce M Simpson */ 318f002c6cSBruce M Simpson 328f002c6cSBruce M Simpson /* 338f002c6cSBruce M Simpson * IPv6 multicast socket, group, and socket option processing module. 3433cde130SBruce M Simpson * Normative references: RFC 2292, RFC 3492, RFC 3542, RFC 3678, RFC 3810. 358f002c6cSBruce M Simpson */ 368f002c6cSBruce M Simpson 378f002c6cSBruce M Simpson #include <sys/cdefs.h> 388f002c6cSBruce M Simpson __FBSDID("$FreeBSD$"); 398f002c6cSBruce M Simpson 408f002c6cSBruce M Simpson #include "opt_inet6.h" 418f002c6cSBruce M Simpson 428f002c6cSBruce M Simpson #include <sys/param.h> 438f002c6cSBruce M Simpson #include <sys/systm.h> 448f002c6cSBruce M Simpson #include <sys/kernel.h> 458f002c6cSBruce M Simpson #include <sys/malloc.h> 468f002c6cSBruce M Simpson #include <sys/mbuf.h> 478f002c6cSBruce M Simpson #include <sys/protosw.h> 488f002c6cSBruce M Simpson #include <sys/socket.h> 498f002c6cSBruce M Simpson #include <sys/socketvar.h> 508f002c6cSBruce M Simpson #include <sys/protosw.h> 518f002c6cSBruce M Simpson #include <sys/sysctl.h> 528f002c6cSBruce M Simpson #include <sys/priv.h> 538f002c6cSBruce M Simpson #include <sys/ktr.h> 548f002c6cSBruce M Simpson #include <sys/tree.h> 558f002c6cSBruce M Simpson 568f002c6cSBruce M Simpson #include <net/if.h> 5776039bc8SGleb Smirnoff #include <net/if_var.h> 588f002c6cSBruce M Simpson #include <net/if_dl.h> 598f002c6cSBruce M Simpson #include <net/route.h> 608f002c6cSBruce M Simpson #include <net/vnet.h> 618f002c6cSBruce M Simpson 628f002c6cSBruce M Simpson #include <netinet/in.h> 638f002c6cSBruce M Simpson #include <netinet/in_var.h> 649977be4aSAlexander V. Chernikov #include <netinet6/in6_fib.h> 658f002c6cSBruce M Simpson #include <netinet6/in6_var.h> 668f002c6cSBruce M Simpson #include <netinet/ip6.h> 678f002c6cSBruce M Simpson #include <netinet/icmp6.h> 688f002c6cSBruce M Simpson #include <netinet6/ip6_var.h> 698f002c6cSBruce M Simpson #include <netinet/in_pcb.h> 708f002c6cSBruce M Simpson #include <netinet/tcp_var.h> 718f002c6cSBruce M Simpson #include <netinet6/nd6.h> 728f002c6cSBruce M Simpson #include <netinet6/mld6_var.h> 73eddfbb76SRobert Watson #include <netinet6/scope6_var.h> 748f002c6cSBruce M Simpson 758f002c6cSBruce M Simpson #ifndef KTR_MLD 768f002c6cSBruce M Simpson #define KTR_MLD KTR_INET6 778f002c6cSBruce M Simpson #endif 788f002c6cSBruce M Simpson 798f002c6cSBruce M Simpson #ifndef __SOCKUNION_DECLARED 808f002c6cSBruce M Simpson union sockunion { 818f002c6cSBruce M Simpson struct sockaddr_storage ss; 828f002c6cSBruce M Simpson struct sockaddr sa; 838f002c6cSBruce M Simpson struct sockaddr_dl sdl; 848f002c6cSBruce M Simpson struct sockaddr_in6 sin6; 858f002c6cSBruce M Simpson }; 868f002c6cSBruce M Simpson typedef union sockunion sockunion_t; 878f002c6cSBruce M Simpson #define __SOCKUNION_DECLARED 888f002c6cSBruce M Simpson #endif /* __SOCKUNION_DECLARED */ 898f002c6cSBruce M Simpson 908f002c6cSBruce M Simpson static MALLOC_DEFINE(M_IN6MFILTER, "in6_mfilter", 918f002c6cSBruce M Simpson "IPv6 multicast PCB-layer source filter"); 928f002c6cSBruce M Simpson static MALLOC_DEFINE(M_IP6MADDR, "in6_multi", "IPv6 multicast group"); 938f002c6cSBruce M Simpson static MALLOC_DEFINE(M_IP6MOPTS, "ip6_moptions", "IPv6 multicast options"); 948f002c6cSBruce M Simpson static MALLOC_DEFINE(M_IP6MSOURCE, "ip6_msource", 958f002c6cSBruce M Simpson "IPv6 multicast MLD-layer source filter"); 968f002c6cSBruce M Simpson 978f002c6cSBruce M Simpson RB_GENERATE(ip6_msource_tree, ip6_msource, im6s_link, ip6_msource_cmp); 988f002c6cSBruce M Simpson 998f002c6cSBruce M Simpson /* 1008f002c6cSBruce M Simpson * Locking: 1018f002c6cSBruce M Simpson * - Lock order is: Giant, INP_WLOCK, IN6_MULTI_LOCK, MLD_LOCK, IF_ADDR_LOCK. 1028f002c6cSBruce M Simpson * - The IF_ADDR_LOCK is implicitly taken by in6m_lookup() earlier, however 1038f002c6cSBruce M Simpson * it can be taken by code in net/if.c also. 1048f002c6cSBruce M Simpson * - ip6_moptions and in6_mfilter are covered by the INP_WLOCK. 1058f002c6cSBruce M Simpson * 1068f002c6cSBruce M Simpson * struct in6_multi is covered by IN6_MULTI_LOCK. There isn't strictly 1078f002c6cSBruce M Simpson * any need for in6_multi itself to be virtualized -- it is bound to an ifp 1088f002c6cSBruce M Simpson * anyway no matter what happens. 1098f002c6cSBruce M Simpson */ 1108f002c6cSBruce M Simpson struct mtx in6_multi_mtx; 1118f002c6cSBruce M Simpson MTX_SYSINIT(in6_multi_mtx, &in6_multi_mtx, "in6_multi_mtx", MTX_DEF); 1128f002c6cSBruce M Simpson 1138f002c6cSBruce M Simpson static void im6f_commit(struct in6_mfilter *); 1148f002c6cSBruce M Simpson static int im6f_get_source(struct in6_mfilter *imf, 1158f002c6cSBruce M Simpson const struct sockaddr_in6 *psin, 1168f002c6cSBruce M Simpson struct in6_msource **); 1178f002c6cSBruce M Simpson static struct in6_msource * 1188f002c6cSBruce M Simpson im6f_graft(struct in6_mfilter *, const uint8_t, 1198f002c6cSBruce M Simpson const struct sockaddr_in6 *); 1208f002c6cSBruce M Simpson static void im6f_leave(struct in6_mfilter *); 1218f002c6cSBruce M Simpson static int im6f_prune(struct in6_mfilter *, const struct sockaddr_in6 *); 1228f002c6cSBruce M Simpson static void im6f_purge(struct in6_mfilter *); 1238f002c6cSBruce M Simpson static void im6f_rollback(struct in6_mfilter *); 1248f002c6cSBruce M Simpson static void im6f_reap(struct in6_mfilter *); 1258f002c6cSBruce M Simpson static int im6o_grow(struct ip6_moptions *); 1268f002c6cSBruce M Simpson static size_t im6o_match_group(const struct ip6_moptions *, 1278f002c6cSBruce M Simpson const struct ifnet *, const struct sockaddr *); 1288f002c6cSBruce M Simpson static struct in6_msource * 1298f002c6cSBruce M Simpson im6o_match_source(const struct ip6_moptions *, const size_t, 1308f002c6cSBruce M Simpson const struct sockaddr *); 1318f002c6cSBruce M Simpson static void im6s_merge(struct ip6_msource *ims, 1328f002c6cSBruce M Simpson const struct in6_msource *lims, const int rollback); 1338f002c6cSBruce M Simpson static int in6_mc_get(struct ifnet *, const struct in6_addr *, 1348f002c6cSBruce M Simpson struct in6_multi **); 1358f002c6cSBruce M Simpson static int in6m_get_source(struct in6_multi *inm, 1368f002c6cSBruce M Simpson const struct in6_addr *addr, const int noalloc, 1378f002c6cSBruce M Simpson struct ip6_msource **pims); 1386c5a340eSDimitry Andric #ifdef KTR 1398f002c6cSBruce M Simpson static int in6m_is_ifp_detached(const struct in6_multi *); 1406c5a340eSDimitry Andric #endif 1418f002c6cSBruce M Simpson static int in6m_merge(struct in6_multi *, /*const*/ struct in6_mfilter *); 1428f002c6cSBruce M Simpson static void in6m_purge(struct in6_multi *); 1438f002c6cSBruce M Simpson static void in6m_reap(struct in6_multi *); 1448f002c6cSBruce M Simpson static struct ip6_moptions * 1458f002c6cSBruce M Simpson in6p_findmoptions(struct inpcb *); 1468f002c6cSBruce M Simpson static int in6p_get_source_filters(struct inpcb *, struct sockopt *); 1478f002c6cSBruce M Simpson static int in6p_join_group(struct inpcb *, struct sockopt *); 1488f002c6cSBruce M Simpson static int in6p_leave_group(struct inpcb *, struct sockopt *); 14933cde130SBruce M Simpson static struct ifnet * 15033cde130SBruce M Simpson in6p_lookup_mcast_ifp(const struct inpcb *, 15133cde130SBruce M Simpson const struct sockaddr_in6 *); 1528f002c6cSBruce M Simpson static int in6p_block_unblock_source(struct inpcb *, struct sockopt *); 1538f002c6cSBruce M Simpson static int in6p_set_multicast_if(struct inpcb *, struct sockopt *); 1548f002c6cSBruce M Simpson static int in6p_set_source_filters(struct inpcb *, struct sockopt *); 1558f002c6cSBruce M Simpson static int sysctl_ip6_mcast_filters(SYSCTL_HANDLER_ARGS); 1568f002c6cSBruce M Simpson 1578f002c6cSBruce M Simpson SYSCTL_DECL(_net_inet6_ip6); /* XXX Not in any common header. */ 1588f002c6cSBruce M Simpson 1596472ac3dSEd Schouten static SYSCTL_NODE(_net_inet6_ip6, OID_AUTO, mcast, CTLFLAG_RW, 0, 1606472ac3dSEd Schouten "IPv6 multicast"); 1618f002c6cSBruce M Simpson 1628f002c6cSBruce M Simpson static u_long in6_mcast_maxgrpsrc = IPV6_MAX_GROUP_SRC_FILTER; 1638f002c6cSBruce M Simpson SYSCTL_ULONG(_net_inet6_ip6_mcast, OID_AUTO, maxgrpsrc, 164af3b2549SHans Petter Selasky CTLFLAG_RWTUN, &in6_mcast_maxgrpsrc, 0, 1658f002c6cSBruce M Simpson "Max source filters per group"); 1668f002c6cSBruce M Simpson 1678f002c6cSBruce M Simpson static u_long in6_mcast_maxsocksrc = IPV6_MAX_SOCK_SRC_FILTER; 1688f002c6cSBruce M Simpson SYSCTL_ULONG(_net_inet6_ip6_mcast, OID_AUTO, maxsocksrc, 169af3b2549SHans Petter Selasky CTLFLAG_RWTUN, &in6_mcast_maxsocksrc, 0, 1708f002c6cSBruce M Simpson "Max source filters per socket"); 1718f002c6cSBruce M Simpson 1728f002c6cSBruce M Simpson /* TODO Virtualize this switch. */ 1738f002c6cSBruce M Simpson int in6_mcast_loop = IPV6_DEFAULT_MULTICAST_LOOP; 174af3b2549SHans Petter Selasky SYSCTL_INT(_net_inet6_ip6_mcast, OID_AUTO, loop, CTLFLAG_RWTUN, 1758f002c6cSBruce M Simpson &in6_mcast_loop, 0, "Loopback multicast datagrams by default"); 1768f002c6cSBruce M Simpson 1776472ac3dSEd Schouten static SYSCTL_NODE(_net_inet6_ip6_mcast, OID_AUTO, filters, 1788f002c6cSBruce M Simpson CTLFLAG_RD | CTLFLAG_MPSAFE, sysctl_ip6_mcast_filters, 1798f002c6cSBruce M Simpson "Per-interface stack-wide source filters"); 1808f002c6cSBruce M Simpson 1816c5a340eSDimitry Andric #ifdef KTR 1828f002c6cSBruce M Simpson /* 1838f002c6cSBruce M Simpson * Inline function which wraps assertions for a valid ifp. 1848f002c6cSBruce M Simpson * The ifnet layer will set the ifma's ifp pointer to NULL if the ifp 1858f002c6cSBruce M Simpson * is detached. 1868f002c6cSBruce M Simpson */ 1878f002c6cSBruce M Simpson static int __inline 1888f002c6cSBruce M Simpson in6m_is_ifp_detached(const struct in6_multi *inm) 1898f002c6cSBruce M Simpson { 1908f002c6cSBruce M Simpson struct ifnet *ifp; 1918f002c6cSBruce M Simpson 1928f002c6cSBruce M Simpson KASSERT(inm->in6m_ifma != NULL, ("%s: no ifma", __func__)); 1938f002c6cSBruce M Simpson ifp = inm->in6m_ifma->ifma_ifp; 1948f002c6cSBruce M Simpson if (ifp != NULL) { 1958f002c6cSBruce M Simpson /* 1968f002c6cSBruce M Simpson * Sanity check that network-layer notion of ifp is the 1978f002c6cSBruce M Simpson * same as that of link-layer. 1988f002c6cSBruce M Simpson */ 1998f002c6cSBruce M Simpson KASSERT(inm->in6m_ifp == ifp, ("%s: bad ifp", __func__)); 2008f002c6cSBruce M Simpson } 2018f002c6cSBruce M Simpson 2028f002c6cSBruce M Simpson return (ifp == NULL); 2038f002c6cSBruce M Simpson } 2046c5a340eSDimitry Andric #endif 2058f002c6cSBruce M Simpson 2068f002c6cSBruce M Simpson /* 2078f002c6cSBruce M Simpson * Initialize an in6_mfilter structure to a known state at t0, t1 2088f002c6cSBruce M Simpson * with an empty source filter list. 2098f002c6cSBruce M Simpson */ 2108f002c6cSBruce M Simpson static __inline void 2118f002c6cSBruce M Simpson im6f_init(struct in6_mfilter *imf, const int st0, const int st1) 2128f002c6cSBruce M Simpson { 2138f002c6cSBruce M Simpson memset(imf, 0, sizeof(struct in6_mfilter)); 2148f002c6cSBruce M Simpson RB_INIT(&imf->im6f_sources); 2158f002c6cSBruce M Simpson imf->im6f_st[0] = st0; 2168f002c6cSBruce M Simpson imf->im6f_st[1] = st1; 2178f002c6cSBruce M Simpson } 2188f002c6cSBruce M Simpson 2198f002c6cSBruce M Simpson /* 2208f002c6cSBruce M Simpson * Resize the ip6_moptions vector to the next power-of-two minus 1. 2218f002c6cSBruce M Simpson * May be called with locks held; do not sleep. 2228f002c6cSBruce M Simpson */ 2238f002c6cSBruce M Simpson static int 2248f002c6cSBruce M Simpson im6o_grow(struct ip6_moptions *imo) 2258f002c6cSBruce M Simpson { 2268f002c6cSBruce M Simpson struct in6_multi **nmships; 2278f002c6cSBruce M Simpson struct in6_multi **omships; 2288f002c6cSBruce M Simpson struct in6_mfilter *nmfilters; 2298f002c6cSBruce M Simpson struct in6_mfilter *omfilters; 2308f002c6cSBruce M Simpson size_t idx; 2318f002c6cSBruce M Simpson size_t newmax; 2328f002c6cSBruce M Simpson size_t oldmax; 2338f002c6cSBruce M Simpson 2348f002c6cSBruce M Simpson nmships = NULL; 2358f002c6cSBruce M Simpson nmfilters = NULL; 2368f002c6cSBruce M Simpson omships = imo->im6o_membership; 2378f002c6cSBruce M Simpson omfilters = imo->im6o_mfilters; 2388f002c6cSBruce M Simpson oldmax = imo->im6o_max_memberships; 2398f002c6cSBruce M Simpson newmax = ((oldmax + 1) * 2) - 1; 2408f002c6cSBruce M Simpson 2418f002c6cSBruce M Simpson if (newmax <= IPV6_MAX_MEMBERSHIPS) { 2428f002c6cSBruce M Simpson nmships = (struct in6_multi **)realloc(omships, 2438f002c6cSBruce M Simpson sizeof(struct in6_multi *) * newmax, M_IP6MOPTS, M_NOWAIT); 2448f002c6cSBruce M Simpson nmfilters = (struct in6_mfilter *)realloc(omfilters, 2458f002c6cSBruce M Simpson sizeof(struct in6_mfilter) * newmax, M_IN6MFILTER, 2468f002c6cSBruce M Simpson M_NOWAIT); 2478f002c6cSBruce M Simpson if (nmships != NULL && nmfilters != NULL) { 2488f002c6cSBruce M Simpson /* Initialize newly allocated source filter heads. */ 2498f002c6cSBruce M Simpson for (idx = oldmax; idx < newmax; idx++) { 2508f002c6cSBruce M Simpson im6f_init(&nmfilters[idx], MCAST_UNDEFINED, 2518f002c6cSBruce M Simpson MCAST_EXCLUDE); 2528f002c6cSBruce M Simpson } 2538f002c6cSBruce M Simpson imo->im6o_max_memberships = newmax; 2548f002c6cSBruce M Simpson imo->im6o_membership = nmships; 2558f002c6cSBruce M Simpson imo->im6o_mfilters = nmfilters; 2568f002c6cSBruce M Simpson } 2578f002c6cSBruce M Simpson } 2588f002c6cSBruce M Simpson 2598f002c6cSBruce M Simpson if (nmships == NULL || nmfilters == NULL) { 2608f002c6cSBruce M Simpson if (nmships != NULL) 2618f002c6cSBruce M Simpson free(nmships, M_IP6MOPTS); 2628f002c6cSBruce M Simpson if (nmfilters != NULL) 2638f002c6cSBruce M Simpson free(nmfilters, M_IN6MFILTER); 2648f002c6cSBruce M Simpson return (ETOOMANYREFS); 2658f002c6cSBruce M Simpson } 2668f002c6cSBruce M Simpson 2678f002c6cSBruce M Simpson return (0); 2688f002c6cSBruce M Simpson } 2698f002c6cSBruce M Simpson 2708f002c6cSBruce M Simpson /* 2718f002c6cSBruce M Simpson * Find an IPv6 multicast group entry for this ip6_moptions instance 2728f002c6cSBruce M Simpson * which matches the specified group, and optionally an interface. 2738f002c6cSBruce M Simpson * Return its index into the array, or -1 if not found. 2748f002c6cSBruce M Simpson */ 2758f002c6cSBruce M Simpson static size_t 2768f002c6cSBruce M Simpson im6o_match_group(const struct ip6_moptions *imo, const struct ifnet *ifp, 2778f002c6cSBruce M Simpson const struct sockaddr *group) 2788f002c6cSBruce M Simpson { 2798f002c6cSBruce M Simpson const struct sockaddr_in6 *gsin6; 2808f002c6cSBruce M Simpson struct in6_multi **pinm; 2818f002c6cSBruce M Simpson int idx; 2828f002c6cSBruce M Simpson int nmships; 2838f002c6cSBruce M Simpson 2848f002c6cSBruce M Simpson gsin6 = (const struct sockaddr_in6 *)group; 2858f002c6cSBruce M Simpson 2868f002c6cSBruce M Simpson /* The im6o_membership array may be lazy allocated. */ 2878f002c6cSBruce M Simpson if (imo->im6o_membership == NULL || imo->im6o_num_memberships == 0) 2888f002c6cSBruce M Simpson return (-1); 2898f002c6cSBruce M Simpson 2908f002c6cSBruce M Simpson nmships = imo->im6o_num_memberships; 2918f002c6cSBruce M Simpson pinm = &imo->im6o_membership[0]; 2928f002c6cSBruce M Simpson for (idx = 0; idx < nmships; idx++, pinm++) { 2938f002c6cSBruce M Simpson if (*pinm == NULL) 2948f002c6cSBruce M Simpson continue; 2958f002c6cSBruce M Simpson if ((ifp == NULL || ((*pinm)->in6m_ifp == ifp)) && 2968f002c6cSBruce M Simpson IN6_ARE_ADDR_EQUAL(&(*pinm)->in6m_addr, 2978f002c6cSBruce M Simpson &gsin6->sin6_addr)) { 2988f002c6cSBruce M Simpson break; 2998f002c6cSBruce M Simpson } 3008f002c6cSBruce M Simpson } 3018f002c6cSBruce M Simpson if (idx >= nmships) 3028f002c6cSBruce M Simpson idx = -1; 3038f002c6cSBruce M Simpson 3048f002c6cSBruce M Simpson return (idx); 3058f002c6cSBruce M Simpson } 3068f002c6cSBruce M Simpson 3078f002c6cSBruce M Simpson /* 3088f002c6cSBruce M Simpson * Find an IPv6 multicast source entry for this imo which matches 3098f002c6cSBruce M Simpson * the given group index for this socket, and source address. 3108f002c6cSBruce M Simpson * 31129dc7bc6SBruce M Simpson * XXX TODO: The scope ID, if present in src, is stripped before 31229dc7bc6SBruce M Simpson * any comparison. We SHOULD enforce scope/zone checks where the source 31329dc7bc6SBruce M Simpson * filter entry has a link scope. 31429dc7bc6SBruce M Simpson * 3158f002c6cSBruce M Simpson * NOTE: This does not check if the entry is in-mode, merely if 3168f002c6cSBruce M Simpson * it exists, which may not be the desired behaviour. 3178f002c6cSBruce M Simpson */ 3188f002c6cSBruce M Simpson static struct in6_msource * 3198f002c6cSBruce M Simpson im6o_match_source(const struct ip6_moptions *imo, const size_t gidx, 3208f002c6cSBruce M Simpson const struct sockaddr *src) 3218f002c6cSBruce M Simpson { 3228f002c6cSBruce M Simpson struct ip6_msource find; 3238f002c6cSBruce M Simpson struct in6_mfilter *imf; 3248f002c6cSBruce M Simpson struct ip6_msource *ims; 3258f002c6cSBruce M Simpson const sockunion_t *psa; 3268f002c6cSBruce M Simpson 3278f002c6cSBruce M Simpson KASSERT(src->sa_family == AF_INET6, ("%s: !AF_INET6", __func__)); 3288f002c6cSBruce M Simpson KASSERT(gidx != -1 && gidx < imo->im6o_num_memberships, 3298f002c6cSBruce M Simpson ("%s: invalid index %d\n", __func__, (int)gidx)); 3308f002c6cSBruce M Simpson 3318f002c6cSBruce M Simpson /* The im6o_mfilters array may be lazy allocated. */ 3328f002c6cSBruce M Simpson if (imo->im6o_mfilters == NULL) 3338f002c6cSBruce M Simpson return (NULL); 3348f002c6cSBruce M Simpson imf = &imo->im6o_mfilters[gidx]; 3358f002c6cSBruce M Simpson 3368f002c6cSBruce M Simpson psa = (const sockunion_t *)src; 3378f002c6cSBruce M Simpson find.im6s_addr = psa->sin6.sin6_addr; 33829dc7bc6SBruce M Simpson in6_clearscope(&find.im6s_addr); /* XXX */ 3398f002c6cSBruce M Simpson ims = RB_FIND(ip6_msource_tree, &imf->im6f_sources, &find); 3408f002c6cSBruce M Simpson 3418f002c6cSBruce M Simpson return ((struct in6_msource *)ims); 3428f002c6cSBruce M Simpson } 3438f002c6cSBruce M Simpson 3448f002c6cSBruce M Simpson /* 3458f002c6cSBruce M Simpson * Perform filtering for multicast datagrams on a socket by group and source. 3468f002c6cSBruce M Simpson * 3478f002c6cSBruce M Simpson * Returns 0 if a datagram should be allowed through, or various error codes 3488f002c6cSBruce M Simpson * if the socket was not a member of the group, or the source was muted, etc. 3498f002c6cSBruce M Simpson */ 3508f002c6cSBruce M Simpson int 3518f002c6cSBruce M Simpson im6o_mc_filter(const struct ip6_moptions *imo, const struct ifnet *ifp, 3528f002c6cSBruce M Simpson const struct sockaddr *group, const struct sockaddr *src) 3538f002c6cSBruce M Simpson { 3548f002c6cSBruce M Simpson size_t gidx; 3558f002c6cSBruce M Simpson struct in6_msource *ims; 3568f002c6cSBruce M Simpson int mode; 3578f002c6cSBruce M Simpson 3588f002c6cSBruce M Simpson KASSERT(ifp != NULL, ("%s: null ifp", __func__)); 3598f002c6cSBruce M Simpson 3608f002c6cSBruce M Simpson gidx = im6o_match_group(imo, ifp, group); 3618f002c6cSBruce M Simpson if (gidx == -1) 3628f002c6cSBruce M Simpson return (MCAST_NOTGMEMBER); 3638f002c6cSBruce M Simpson 3648f002c6cSBruce M Simpson /* 3658f002c6cSBruce M Simpson * Check if the source was included in an (S,G) join. 3668f002c6cSBruce M Simpson * Allow reception on exclusive memberships by default, 3678f002c6cSBruce M Simpson * reject reception on inclusive memberships by default. 3688f002c6cSBruce M Simpson * Exclude source only if an in-mode exclude filter exists. 3698f002c6cSBruce M Simpson * Include source only if an in-mode include filter exists. 3708f002c6cSBruce M Simpson * NOTE: We are comparing group state here at MLD t1 (now) 3718f002c6cSBruce M Simpson * with socket-layer t0 (since last downcall). 3728f002c6cSBruce M Simpson */ 3738f002c6cSBruce M Simpson mode = imo->im6o_mfilters[gidx].im6f_st[1]; 3748f002c6cSBruce M Simpson ims = im6o_match_source(imo, gidx, src); 3758f002c6cSBruce M Simpson 3768f002c6cSBruce M Simpson if ((ims == NULL && mode == MCAST_INCLUDE) || 3778f002c6cSBruce M Simpson (ims != NULL && ims->im6sl_st[0] != mode)) 3788f002c6cSBruce M Simpson return (MCAST_NOTSMEMBER); 3798f002c6cSBruce M Simpson 3808f002c6cSBruce M Simpson return (MCAST_PASS); 3818f002c6cSBruce M Simpson } 3828f002c6cSBruce M Simpson 3838f002c6cSBruce M Simpson /* 3848f002c6cSBruce M Simpson * Find and return a reference to an in6_multi record for (ifp, group), 3858f002c6cSBruce M Simpson * and bump its reference count. 3868f002c6cSBruce M Simpson * If one does not exist, try to allocate it, and update link-layer multicast 3878f002c6cSBruce M Simpson * filters on ifp to listen for group. 3888f002c6cSBruce M Simpson * Assumes the IN6_MULTI lock is held across the call. 3898f002c6cSBruce M Simpson * Return 0 if successful, otherwise return an appropriate error code. 3908f002c6cSBruce M Simpson */ 3918f002c6cSBruce M Simpson static int 3928f002c6cSBruce M Simpson in6_mc_get(struct ifnet *ifp, const struct in6_addr *group, 3938f002c6cSBruce M Simpson struct in6_multi **pinm) 3948f002c6cSBruce M Simpson { 3958f002c6cSBruce M Simpson struct sockaddr_in6 gsin6; 3968f002c6cSBruce M Simpson struct ifmultiaddr *ifma; 3978f002c6cSBruce M Simpson struct in6_multi *inm; 3988f002c6cSBruce M Simpson int error; 3998f002c6cSBruce M Simpson 4008f002c6cSBruce M Simpson error = 0; 4018f002c6cSBruce M Simpson 4028f002c6cSBruce M Simpson /* 4038f002c6cSBruce M Simpson * XXX: Accesses to ifma_protospec must be covered by IF_ADDR_LOCK; 4048f002c6cSBruce M Simpson * if_addmulti() takes this mutex itself, so we must drop and 4058f002c6cSBruce M Simpson * re-acquire around the call. 4068f002c6cSBruce M Simpson */ 4078f002c6cSBruce M Simpson IN6_MULTI_LOCK_ASSERT(); 408137f91e8SJohn Baldwin IF_ADDR_WLOCK(ifp); 4098f002c6cSBruce M Simpson 4108f002c6cSBruce M Simpson inm = in6m_lookup_locked(ifp, group); 4118f002c6cSBruce M Simpson if (inm != NULL) { 4128f002c6cSBruce M Simpson /* 4138f002c6cSBruce M Simpson * If we already joined this group, just bump the 4148f002c6cSBruce M Simpson * refcount and return it. 4158f002c6cSBruce M Simpson */ 4168f002c6cSBruce M Simpson KASSERT(inm->in6m_refcount >= 1, 4178f002c6cSBruce M Simpson ("%s: bad refcount %d", __func__, inm->in6m_refcount)); 4188f002c6cSBruce M Simpson ++inm->in6m_refcount; 4198f002c6cSBruce M Simpson *pinm = inm; 4208f002c6cSBruce M Simpson goto out_locked; 4218f002c6cSBruce M Simpson } 4228f002c6cSBruce M Simpson 4238f002c6cSBruce M Simpson memset(&gsin6, 0, sizeof(gsin6)); 4248f002c6cSBruce M Simpson gsin6.sin6_family = AF_INET6; 4258f002c6cSBruce M Simpson gsin6.sin6_len = sizeof(struct sockaddr_in6); 4268f002c6cSBruce M Simpson gsin6.sin6_addr = *group; 4278f002c6cSBruce M Simpson 4288f002c6cSBruce M Simpson /* 4298f002c6cSBruce M Simpson * Check if a link-layer group is already associated 4308f002c6cSBruce M Simpson * with this network-layer group on the given ifnet. 4318f002c6cSBruce M Simpson */ 432137f91e8SJohn Baldwin IF_ADDR_WUNLOCK(ifp); 4338f002c6cSBruce M Simpson error = if_addmulti(ifp, (struct sockaddr *)&gsin6, &ifma); 4348f002c6cSBruce M Simpson if (error != 0) 4358f002c6cSBruce M Simpson return (error); 436137f91e8SJohn Baldwin IF_ADDR_WLOCK(ifp); 4378f002c6cSBruce M Simpson 4388f002c6cSBruce M Simpson /* 4398f002c6cSBruce M Simpson * If something other than netinet6 is occupying the link-layer 4408f002c6cSBruce M Simpson * group, print a meaningful error message and back out of 4418f002c6cSBruce M Simpson * the allocation. 4428f002c6cSBruce M Simpson * Otherwise, bump the refcount on the existing network-layer 4438f002c6cSBruce M Simpson * group association and return it. 4448f002c6cSBruce M Simpson */ 4458f002c6cSBruce M Simpson if (ifma->ifma_protospec != NULL) { 4468f002c6cSBruce M Simpson inm = (struct in6_multi *)ifma->ifma_protospec; 4478f002c6cSBruce M Simpson #ifdef INVARIANTS 4488f002c6cSBruce M Simpson KASSERT(ifma->ifma_addr != NULL, ("%s: no ifma_addr", 4498f002c6cSBruce M Simpson __func__)); 4508f002c6cSBruce M Simpson KASSERT(ifma->ifma_addr->sa_family == AF_INET6, 4518f002c6cSBruce M Simpson ("%s: ifma not AF_INET6", __func__)); 4528f002c6cSBruce M Simpson KASSERT(inm != NULL, ("%s: no ifma_protospec", __func__)); 4538f002c6cSBruce M Simpson if (inm->in6m_ifma != ifma || inm->in6m_ifp != ifp || 4548f002c6cSBruce M Simpson !IN6_ARE_ADDR_EQUAL(&inm->in6m_addr, group)) 4558f002c6cSBruce M Simpson panic("%s: ifma %p is inconsistent with %p (%p)", 4568f002c6cSBruce M Simpson __func__, ifma, inm, group); 4578f002c6cSBruce M Simpson #endif 4588f002c6cSBruce M Simpson ++inm->in6m_refcount; 4598f002c6cSBruce M Simpson *pinm = inm; 4608f002c6cSBruce M Simpson goto out_locked; 4618f002c6cSBruce M Simpson } 4628f002c6cSBruce M Simpson 463137f91e8SJohn Baldwin IF_ADDR_WLOCK_ASSERT(ifp); 4648f002c6cSBruce M Simpson 4658f002c6cSBruce M Simpson /* 4668f002c6cSBruce M Simpson * A new in6_multi record is needed; allocate and initialize it. 4678f002c6cSBruce M Simpson * We DO NOT perform an MLD join as the in6_ layer may need to 4688f002c6cSBruce M Simpson * push an initial source list down to MLD to support SSM. 4698f002c6cSBruce M Simpson * 4708f002c6cSBruce M Simpson * The initial source filter state is INCLUDE, {} as per the RFC. 4718f002c6cSBruce M Simpson * Pending state-changes per group are subject to a bounds check. 4728f002c6cSBruce M Simpson */ 4738f002c6cSBruce M Simpson inm = malloc(sizeof(*inm), M_IP6MADDR, M_NOWAIT | M_ZERO); 4748f002c6cSBruce M Simpson if (inm == NULL) { 47555faae77SConrad Meyer IF_ADDR_WUNLOCK(ifp); 4768f002c6cSBruce M Simpson if_delmulti_ifma(ifma); 47755faae77SConrad Meyer return (ENOMEM); 4788f002c6cSBruce M Simpson } 4798f002c6cSBruce M Simpson inm->in6m_addr = *group; 4808f002c6cSBruce M Simpson inm->in6m_ifp = ifp; 4818f002c6cSBruce M Simpson inm->in6m_mli = MLD_IFINFO(ifp); 4828f002c6cSBruce M Simpson inm->in6m_ifma = ifma; 4838f002c6cSBruce M Simpson inm->in6m_refcount = 1; 4848f002c6cSBruce M Simpson inm->in6m_state = MLD_NOT_MEMBER; 485a99c84d4SGleb Smirnoff mbufq_init(&inm->in6m_scq, MLD_MAX_STATE_CHANGES); 4868f002c6cSBruce M Simpson 4878f002c6cSBruce M Simpson inm->in6m_st[0].iss_fmode = MCAST_UNDEFINED; 4888f002c6cSBruce M Simpson inm->in6m_st[1].iss_fmode = MCAST_UNDEFINED; 4898f002c6cSBruce M Simpson RB_INIT(&inm->in6m_srcs); 4908f002c6cSBruce M Simpson 4918f002c6cSBruce M Simpson ifma->ifma_protospec = inm; 4928f002c6cSBruce M Simpson *pinm = inm; 4938f002c6cSBruce M Simpson 4948f002c6cSBruce M Simpson out_locked: 495137f91e8SJohn Baldwin IF_ADDR_WUNLOCK(ifp); 4968f002c6cSBruce M Simpson return (error); 4978f002c6cSBruce M Simpson } 4988f002c6cSBruce M Simpson 4998f002c6cSBruce M Simpson /* 5008f002c6cSBruce M Simpson * Drop a reference to an in6_multi record. 5018f002c6cSBruce M Simpson * 5028f002c6cSBruce M Simpson * If the refcount drops to 0, free the in6_multi record and 5038f002c6cSBruce M Simpson * delete the underlying link-layer membership. 5048f002c6cSBruce M Simpson */ 5058f002c6cSBruce M Simpson void 5068f002c6cSBruce M Simpson in6m_release_locked(struct in6_multi *inm) 5078f002c6cSBruce M Simpson { 5088f002c6cSBruce M Simpson struct ifmultiaddr *ifma; 5098f002c6cSBruce M Simpson 5108f002c6cSBruce M Simpson IN6_MULTI_LOCK_ASSERT(); 5118f002c6cSBruce M Simpson 5128f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: refcount is %d", __func__, inm->in6m_refcount); 5138f002c6cSBruce M Simpson 5148f002c6cSBruce M Simpson if (--inm->in6m_refcount > 0) { 5158f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: refcount is now %d", __func__, 5168f002c6cSBruce M Simpson inm->in6m_refcount); 5178f002c6cSBruce M Simpson return; 5188f002c6cSBruce M Simpson } 5198f002c6cSBruce M Simpson 5208f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: freeing inm %p", __func__, inm); 5218f002c6cSBruce M Simpson 5228f002c6cSBruce M Simpson ifma = inm->in6m_ifma; 5238f002c6cSBruce M Simpson 5248f002c6cSBruce M Simpson /* XXX this access is not covered by IF_ADDR_LOCK */ 5258f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: purging ifma %p", __func__, ifma); 5268f002c6cSBruce M Simpson KASSERT(ifma->ifma_protospec == inm, 5278f002c6cSBruce M Simpson ("%s: ifma_protospec != inm", __func__)); 5288f002c6cSBruce M Simpson ifma->ifma_protospec = NULL; 5298f002c6cSBruce M Simpson 5308f002c6cSBruce M Simpson in6m_purge(inm); 5318f002c6cSBruce M Simpson 5328f002c6cSBruce M Simpson free(inm, M_IP6MADDR); 5338f002c6cSBruce M Simpson 5348f002c6cSBruce M Simpson if_delmulti_ifma(ifma); 5358f002c6cSBruce M Simpson } 5368f002c6cSBruce M Simpson 5378f002c6cSBruce M Simpson /* 5388f002c6cSBruce M Simpson * Clear recorded source entries for a group. 5398f002c6cSBruce M Simpson * Used by the MLD code. Caller must hold the IN6_MULTI lock. 5408f002c6cSBruce M Simpson * FIXME: Should reap. 5418f002c6cSBruce M Simpson */ 5428f002c6cSBruce M Simpson void 5438f002c6cSBruce M Simpson in6m_clear_recorded(struct in6_multi *inm) 5448f002c6cSBruce M Simpson { 5458f002c6cSBruce M Simpson struct ip6_msource *ims; 5468f002c6cSBruce M Simpson 5478f002c6cSBruce M Simpson IN6_MULTI_LOCK_ASSERT(); 5488f002c6cSBruce M Simpson 5498f002c6cSBruce M Simpson RB_FOREACH(ims, ip6_msource_tree, &inm->in6m_srcs) { 5508f002c6cSBruce M Simpson if (ims->im6s_stp) { 5518f002c6cSBruce M Simpson ims->im6s_stp = 0; 5528f002c6cSBruce M Simpson --inm->in6m_st[1].iss_rec; 5538f002c6cSBruce M Simpson } 5548f002c6cSBruce M Simpson } 5558f002c6cSBruce M Simpson KASSERT(inm->in6m_st[1].iss_rec == 0, 5568f002c6cSBruce M Simpson ("%s: iss_rec %d not 0", __func__, inm->in6m_st[1].iss_rec)); 5578f002c6cSBruce M Simpson } 5588f002c6cSBruce M Simpson 5598f002c6cSBruce M Simpson /* 5608f002c6cSBruce M Simpson * Record a source as pending for a Source-Group MLDv2 query. 5618f002c6cSBruce M Simpson * This lives here as it modifies the shared tree. 5628f002c6cSBruce M Simpson * 5638f002c6cSBruce M Simpson * inm is the group descriptor. 5648f002c6cSBruce M Simpson * naddr is the address of the source to record in network-byte order. 5658f002c6cSBruce M Simpson * 5668f002c6cSBruce M Simpson * If the net.inet6.mld.sgalloc sysctl is non-zero, we will 5678f002c6cSBruce M Simpson * lazy-allocate a source node in response to an SG query. 5688f002c6cSBruce M Simpson * Otherwise, no allocation is performed. This saves some memory 5698f002c6cSBruce M Simpson * with the trade-off that the source will not be reported to the 5708f002c6cSBruce M Simpson * router if joined in the window between the query response and 5718f002c6cSBruce M Simpson * the group actually being joined on the local host. 5728f002c6cSBruce M Simpson * 5738f002c6cSBruce M Simpson * VIMAGE: XXX: Currently the mld_sgalloc feature has been removed. 5748f002c6cSBruce M Simpson * This turns off the allocation of a recorded source entry if 5758f002c6cSBruce M Simpson * the group has not been joined. 5768f002c6cSBruce M Simpson * 5778f002c6cSBruce M Simpson * Return 0 if the source didn't exist or was already marked as recorded. 5788f002c6cSBruce M Simpson * Return 1 if the source was marked as recorded by this function. 579a4641f4eSPedro F. Giffuni * Return <0 if any error occurred (negated errno code). 5808f002c6cSBruce M Simpson */ 5818f002c6cSBruce M Simpson int 5828f002c6cSBruce M Simpson in6m_record_source(struct in6_multi *inm, const struct in6_addr *addr) 5838f002c6cSBruce M Simpson { 5848f002c6cSBruce M Simpson struct ip6_msource find; 5858f002c6cSBruce M Simpson struct ip6_msource *ims, *nims; 5868f002c6cSBruce M Simpson 5878f002c6cSBruce M Simpson IN6_MULTI_LOCK_ASSERT(); 5888f002c6cSBruce M Simpson 5898f002c6cSBruce M Simpson find.im6s_addr = *addr; 5908f002c6cSBruce M Simpson ims = RB_FIND(ip6_msource_tree, &inm->in6m_srcs, &find); 5918f002c6cSBruce M Simpson if (ims && ims->im6s_stp) 5928f002c6cSBruce M Simpson return (0); 5938f002c6cSBruce M Simpson if (ims == NULL) { 5948f002c6cSBruce M Simpson if (inm->in6m_nsrc == in6_mcast_maxgrpsrc) 5958f002c6cSBruce M Simpson return (-ENOSPC); 5968f002c6cSBruce M Simpson nims = malloc(sizeof(struct ip6_msource), M_IP6MSOURCE, 5978f002c6cSBruce M Simpson M_NOWAIT | M_ZERO); 5988f002c6cSBruce M Simpson if (nims == NULL) 5998f002c6cSBruce M Simpson return (-ENOMEM); 6008f002c6cSBruce M Simpson nims->im6s_addr = find.im6s_addr; 6018f002c6cSBruce M Simpson RB_INSERT(ip6_msource_tree, &inm->in6m_srcs, nims); 6028f002c6cSBruce M Simpson ++inm->in6m_nsrc; 6038f002c6cSBruce M Simpson ims = nims; 6048f002c6cSBruce M Simpson } 6058f002c6cSBruce M Simpson 6068f002c6cSBruce M Simpson /* 6078f002c6cSBruce M Simpson * Mark the source as recorded and update the recorded 6088f002c6cSBruce M Simpson * source count. 6098f002c6cSBruce M Simpson */ 6108f002c6cSBruce M Simpson ++ims->im6s_stp; 6118f002c6cSBruce M Simpson ++inm->in6m_st[1].iss_rec; 6128f002c6cSBruce M Simpson 6138f002c6cSBruce M Simpson return (1); 6148f002c6cSBruce M Simpson } 6158f002c6cSBruce M Simpson 6168f002c6cSBruce M Simpson /* 6178f002c6cSBruce M Simpson * Return a pointer to an in6_msource owned by an in6_mfilter, 6188f002c6cSBruce M Simpson * given its source address. 6198f002c6cSBruce M Simpson * Lazy-allocate if needed. If this is a new entry its filter state is 6208f002c6cSBruce M Simpson * undefined at t0. 6218f002c6cSBruce M Simpson * 6228f002c6cSBruce M Simpson * imf is the filter set being modified. 6238f002c6cSBruce M Simpson * addr is the source address. 6248f002c6cSBruce M Simpson * 6258f002c6cSBruce M Simpson * SMPng: May be called with locks held; malloc must not block. 6268f002c6cSBruce M Simpson */ 6278f002c6cSBruce M Simpson static int 6288f002c6cSBruce M Simpson im6f_get_source(struct in6_mfilter *imf, const struct sockaddr_in6 *psin, 6298f002c6cSBruce M Simpson struct in6_msource **plims) 6308f002c6cSBruce M Simpson { 6318f002c6cSBruce M Simpson struct ip6_msource find; 6328f002c6cSBruce M Simpson struct ip6_msource *ims, *nims; 6338f002c6cSBruce M Simpson struct in6_msource *lims; 6348f002c6cSBruce M Simpson int error; 6358f002c6cSBruce M Simpson 6368f002c6cSBruce M Simpson error = 0; 6378f002c6cSBruce M Simpson ims = NULL; 6388f002c6cSBruce M Simpson lims = NULL; 6398f002c6cSBruce M Simpson 6408f002c6cSBruce M Simpson find.im6s_addr = psin->sin6_addr; 6418f002c6cSBruce M Simpson ims = RB_FIND(ip6_msource_tree, &imf->im6f_sources, &find); 6428f002c6cSBruce M Simpson lims = (struct in6_msource *)ims; 6438f002c6cSBruce M Simpson if (lims == NULL) { 6448f002c6cSBruce M Simpson if (imf->im6f_nsrc == in6_mcast_maxsocksrc) 6458f002c6cSBruce M Simpson return (ENOSPC); 6468f002c6cSBruce M Simpson nims = malloc(sizeof(struct in6_msource), M_IN6MFILTER, 6478f002c6cSBruce M Simpson M_NOWAIT | M_ZERO); 6488f002c6cSBruce M Simpson if (nims == NULL) 6498f002c6cSBruce M Simpson return (ENOMEM); 6508f002c6cSBruce M Simpson lims = (struct in6_msource *)nims; 6518f002c6cSBruce M Simpson lims->im6s_addr = find.im6s_addr; 6528f002c6cSBruce M Simpson lims->im6sl_st[0] = MCAST_UNDEFINED; 6538f002c6cSBruce M Simpson RB_INSERT(ip6_msource_tree, &imf->im6f_sources, nims); 6548f002c6cSBruce M Simpson ++imf->im6f_nsrc; 6558f002c6cSBruce M Simpson } 6568f002c6cSBruce M Simpson 6578f002c6cSBruce M Simpson *plims = lims; 6588f002c6cSBruce M Simpson 6598f002c6cSBruce M Simpson return (error); 6608f002c6cSBruce M Simpson } 6618f002c6cSBruce M Simpson 6628f002c6cSBruce M Simpson /* 6638f002c6cSBruce M Simpson * Graft a source entry into an existing socket-layer filter set, 6648f002c6cSBruce M Simpson * maintaining any required invariants and checking allocations. 6658f002c6cSBruce M Simpson * 6668f002c6cSBruce M Simpson * The source is marked as being in the new filter mode at t1. 6678f002c6cSBruce M Simpson * 6688f002c6cSBruce M Simpson * Return the pointer to the new node, otherwise return NULL. 6698f002c6cSBruce M Simpson */ 6708f002c6cSBruce M Simpson static struct in6_msource * 6718f002c6cSBruce M Simpson im6f_graft(struct in6_mfilter *imf, const uint8_t st1, 6728f002c6cSBruce M Simpson const struct sockaddr_in6 *psin) 6738f002c6cSBruce M Simpson { 6748f002c6cSBruce M Simpson struct ip6_msource *nims; 6758f002c6cSBruce M Simpson struct in6_msource *lims; 6768f002c6cSBruce M Simpson 6778f002c6cSBruce M Simpson nims = malloc(sizeof(struct in6_msource), M_IN6MFILTER, 6788f002c6cSBruce M Simpson M_NOWAIT | M_ZERO); 6798f002c6cSBruce M Simpson if (nims == NULL) 6808f002c6cSBruce M Simpson return (NULL); 6818f002c6cSBruce M Simpson lims = (struct in6_msource *)nims; 6828f002c6cSBruce M Simpson lims->im6s_addr = psin->sin6_addr; 6838f002c6cSBruce M Simpson lims->im6sl_st[0] = MCAST_UNDEFINED; 6848f002c6cSBruce M Simpson lims->im6sl_st[1] = st1; 6858f002c6cSBruce M Simpson RB_INSERT(ip6_msource_tree, &imf->im6f_sources, nims); 6868f002c6cSBruce M Simpson ++imf->im6f_nsrc; 6878f002c6cSBruce M Simpson 6888f002c6cSBruce M Simpson return (lims); 6898f002c6cSBruce M Simpson } 6908f002c6cSBruce M Simpson 6918f002c6cSBruce M Simpson /* 6928f002c6cSBruce M Simpson * Prune a source entry from an existing socket-layer filter set, 6938f002c6cSBruce M Simpson * maintaining any required invariants and checking allocations. 6948f002c6cSBruce M Simpson * 6958f002c6cSBruce M Simpson * The source is marked as being left at t1, it is not freed. 6968f002c6cSBruce M Simpson * 6978f002c6cSBruce M Simpson * Return 0 if no error occurred, otherwise return an errno value. 6988f002c6cSBruce M Simpson */ 6998f002c6cSBruce M Simpson static int 7008f002c6cSBruce M Simpson im6f_prune(struct in6_mfilter *imf, const struct sockaddr_in6 *psin) 7018f002c6cSBruce M Simpson { 7028f002c6cSBruce M Simpson struct ip6_msource find; 7038f002c6cSBruce M Simpson struct ip6_msource *ims; 7048f002c6cSBruce M Simpson struct in6_msource *lims; 7058f002c6cSBruce M Simpson 7068f002c6cSBruce M Simpson find.im6s_addr = psin->sin6_addr; 7078f002c6cSBruce M Simpson ims = RB_FIND(ip6_msource_tree, &imf->im6f_sources, &find); 7088f002c6cSBruce M Simpson if (ims == NULL) 7098f002c6cSBruce M Simpson return (ENOENT); 7108f002c6cSBruce M Simpson lims = (struct in6_msource *)ims; 7118f002c6cSBruce M Simpson lims->im6sl_st[1] = MCAST_UNDEFINED; 7128f002c6cSBruce M Simpson return (0); 7138f002c6cSBruce M Simpson } 7148f002c6cSBruce M Simpson 7158f002c6cSBruce M Simpson /* 7168f002c6cSBruce M Simpson * Revert socket-layer filter set deltas at t1 to t0 state. 7178f002c6cSBruce M Simpson */ 7188f002c6cSBruce M Simpson static void 7198f002c6cSBruce M Simpson im6f_rollback(struct in6_mfilter *imf) 7208f002c6cSBruce M Simpson { 7218f002c6cSBruce M Simpson struct ip6_msource *ims, *tims; 7228f002c6cSBruce M Simpson struct in6_msource *lims; 7238f002c6cSBruce M Simpson 7248f002c6cSBruce M Simpson RB_FOREACH_SAFE(ims, ip6_msource_tree, &imf->im6f_sources, tims) { 7258f002c6cSBruce M Simpson lims = (struct in6_msource *)ims; 7268f002c6cSBruce M Simpson if (lims->im6sl_st[0] == lims->im6sl_st[1]) { 7278f002c6cSBruce M Simpson /* no change at t1 */ 7288f002c6cSBruce M Simpson continue; 7298f002c6cSBruce M Simpson } else if (lims->im6sl_st[0] != MCAST_UNDEFINED) { 7308f002c6cSBruce M Simpson /* revert change to existing source at t1 */ 7318f002c6cSBruce M Simpson lims->im6sl_st[1] = lims->im6sl_st[0]; 7328f002c6cSBruce M Simpson } else { 7338f002c6cSBruce M Simpson /* revert source added t1 */ 7348f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: free ims %p", __func__, ims); 7358f002c6cSBruce M Simpson RB_REMOVE(ip6_msource_tree, &imf->im6f_sources, ims); 7368f002c6cSBruce M Simpson free(ims, M_IN6MFILTER); 7378f002c6cSBruce M Simpson imf->im6f_nsrc--; 7388f002c6cSBruce M Simpson } 7398f002c6cSBruce M Simpson } 7408f002c6cSBruce M Simpson imf->im6f_st[1] = imf->im6f_st[0]; 7418f002c6cSBruce M Simpson } 7428f002c6cSBruce M Simpson 7438f002c6cSBruce M Simpson /* 7448f002c6cSBruce M Simpson * Mark socket-layer filter set as INCLUDE {} at t1. 7458f002c6cSBruce M Simpson */ 7468f002c6cSBruce M Simpson static void 7478f002c6cSBruce M Simpson im6f_leave(struct in6_mfilter *imf) 7488f002c6cSBruce M Simpson { 7498f002c6cSBruce M Simpson struct ip6_msource *ims; 7508f002c6cSBruce M Simpson struct in6_msource *lims; 7518f002c6cSBruce M Simpson 7528f002c6cSBruce M Simpson RB_FOREACH(ims, ip6_msource_tree, &imf->im6f_sources) { 7538f002c6cSBruce M Simpson lims = (struct in6_msource *)ims; 7548f002c6cSBruce M Simpson lims->im6sl_st[1] = MCAST_UNDEFINED; 7558f002c6cSBruce M Simpson } 7568f002c6cSBruce M Simpson imf->im6f_st[1] = MCAST_INCLUDE; 7578f002c6cSBruce M Simpson } 7588f002c6cSBruce M Simpson 7598f002c6cSBruce M Simpson /* 7608f002c6cSBruce M Simpson * Mark socket-layer filter set deltas as committed. 7618f002c6cSBruce M Simpson */ 7628f002c6cSBruce M Simpson static void 7638f002c6cSBruce M Simpson im6f_commit(struct in6_mfilter *imf) 7648f002c6cSBruce M Simpson { 7658f002c6cSBruce M Simpson struct ip6_msource *ims; 7668f002c6cSBruce M Simpson struct in6_msource *lims; 7678f002c6cSBruce M Simpson 7688f002c6cSBruce M Simpson RB_FOREACH(ims, ip6_msource_tree, &imf->im6f_sources) { 7698f002c6cSBruce M Simpson lims = (struct in6_msource *)ims; 7708f002c6cSBruce M Simpson lims->im6sl_st[0] = lims->im6sl_st[1]; 7718f002c6cSBruce M Simpson } 7728f002c6cSBruce M Simpson imf->im6f_st[0] = imf->im6f_st[1]; 7738f002c6cSBruce M Simpson } 7748f002c6cSBruce M Simpson 7758f002c6cSBruce M Simpson /* 7768f002c6cSBruce M Simpson * Reap unreferenced sources from socket-layer filter set. 7778f002c6cSBruce M Simpson */ 7788f002c6cSBruce M Simpson static void 7798f002c6cSBruce M Simpson im6f_reap(struct in6_mfilter *imf) 7808f002c6cSBruce M Simpson { 7818f002c6cSBruce M Simpson struct ip6_msource *ims, *tims; 7828f002c6cSBruce M Simpson struct in6_msource *lims; 7838f002c6cSBruce M Simpson 7848f002c6cSBruce M Simpson RB_FOREACH_SAFE(ims, ip6_msource_tree, &imf->im6f_sources, tims) { 7858f002c6cSBruce M Simpson lims = (struct in6_msource *)ims; 7868f002c6cSBruce M Simpson if ((lims->im6sl_st[0] == MCAST_UNDEFINED) && 7878f002c6cSBruce M Simpson (lims->im6sl_st[1] == MCAST_UNDEFINED)) { 7888f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: free lims %p", __func__, ims); 7898f002c6cSBruce M Simpson RB_REMOVE(ip6_msource_tree, &imf->im6f_sources, ims); 7908f002c6cSBruce M Simpson free(ims, M_IN6MFILTER); 7918f002c6cSBruce M Simpson imf->im6f_nsrc--; 7928f002c6cSBruce M Simpson } 7938f002c6cSBruce M Simpson } 7948f002c6cSBruce M Simpson } 7958f002c6cSBruce M Simpson 7968f002c6cSBruce M Simpson /* 7978f002c6cSBruce M Simpson * Purge socket-layer filter set. 7988f002c6cSBruce M Simpson */ 7998f002c6cSBruce M Simpson static void 8008f002c6cSBruce M Simpson im6f_purge(struct in6_mfilter *imf) 8018f002c6cSBruce M Simpson { 8028f002c6cSBruce M Simpson struct ip6_msource *ims, *tims; 8038f002c6cSBruce M Simpson 8048f002c6cSBruce M Simpson RB_FOREACH_SAFE(ims, ip6_msource_tree, &imf->im6f_sources, tims) { 8058f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: free ims %p", __func__, ims); 8068f002c6cSBruce M Simpson RB_REMOVE(ip6_msource_tree, &imf->im6f_sources, ims); 8078f002c6cSBruce M Simpson free(ims, M_IN6MFILTER); 8088f002c6cSBruce M Simpson imf->im6f_nsrc--; 8098f002c6cSBruce M Simpson } 8108f002c6cSBruce M Simpson imf->im6f_st[0] = imf->im6f_st[1] = MCAST_UNDEFINED; 8118f002c6cSBruce M Simpson KASSERT(RB_EMPTY(&imf->im6f_sources), 8128f002c6cSBruce M Simpson ("%s: im6f_sources not empty", __func__)); 8138f002c6cSBruce M Simpson } 8148f002c6cSBruce M Simpson 8158f002c6cSBruce M Simpson /* 8168f002c6cSBruce M Simpson * Look up a source filter entry for a multicast group. 8178f002c6cSBruce M Simpson * 8188f002c6cSBruce M Simpson * inm is the group descriptor to work with. 8198f002c6cSBruce M Simpson * addr is the IPv6 address to look up. 8208f002c6cSBruce M Simpson * noalloc may be non-zero to suppress allocation of sources. 8218f002c6cSBruce M Simpson * *pims will be set to the address of the retrieved or allocated source. 8228f002c6cSBruce M Simpson * 8238f002c6cSBruce M Simpson * SMPng: NOTE: may be called with locks held. 8248f002c6cSBruce M Simpson * Return 0 if successful, otherwise return a non-zero error code. 8258f002c6cSBruce M Simpson */ 8268f002c6cSBruce M Simpson static int 8278f002c6cSBruce M Simpson in6m_get_source(struct in6_multi *inm, const struct in6_addr *addr, 8288f002c6cSBruce M Simpson const int noalloc, struct ip6_msource **pims) 8298f002c6cSBruce M Simpson { 8308f002c6cSBruce M Simpson struct ip6_msource find; 8318f002c6cSBruce M Simpson struct ip6_msource *ims, *nims; 8328f002c6cSBruce M Simpson #ifdef KTR 8338f002c6cSBruce M Simpson char ip6tbuf[INET6_ADDRSTRLEN]; 8348f002c6cSBruce M Simpson #endif 8358f002c6cSBruce M Simpson 8368f002c6cSBruce M Simpson find.im6s_addr = *addr; 8378f002c6cSBruce M Simpson ims = RB_FIND(ip6_msource_tree, &inm->in6m_srcs, &find); 8388f002c6cSBruce M Simpson if (ims == NULL && !noalloc) { 8398f002c6cSBruce M Simpson if (inm->in6m_nsrc == in6_mcast_maxgrpsrc) 8408f002c6cSBruce M Simpson return (ENOSPC); 8418f002c6cSBruce M Simpson nims = malloc(sizeof(struct ip6_msource), M_IP6MSOURCE, 8428f002c6cSBruce M Simpson M_NOWAIT | M_ZERO); 8438f002c6cSBruce M Simpson if (nims == NULL) 8448f002c6cSBruce M Simpson return (ENOMEM); 8458f002c6cSBruce M Simpson nims->im6s_addr = *addr; 8468f002c6cSBruce M Simpson RB_INSERT(ip6_msource_tree, &inm->in6m_srcs, nims); 8478f002c6cSBruce M Simpson ++inm->in6m_nsrc; 8488f002c6cSBruce M Simpson ims = nims; 8498f002c6cSBruce M Simpson CTR3(KTR_MLD, "%s: allocated %s as %p", __func__, 8508f002c6cSBruce M Simpson ip6_sprintf(ip6tbuf, addr), ims); 8518f002c6cSBruce M Simpson } 8528f002c6cSBruce M Simpson 8538f002c6cSBruce M Simpson *pims = ims; 8548f002c6cSBruce M Simpson return (0); 8558f002c6cSBruce M Simpson } 8568f002c6cSBruce M Simpson 8578f002c6cSBruce M Simpson /* 8588f002c6cSBruce M Simpson * Merge socket-layer source into MLD-layer source. 8598f002c6cSBruce M Simpson * If rollback is non-zero, perform the inverse of the merge. 8608f002c6cSBruce M Simpson */ 8618f002c6cSBruce M Simpson static void 8628f002c6cSBruce M Simpson im6s_merge(struct ip6_msource *ims, const struct in6_msource *lims, 8638f002c6cSBruce M Simpson const int rollback) 8648f002c6cSBruce M Simpson { 8658f002c6cSBruce M Simpson int n = rollback ? -1 : 1; 8668f002c6cSBruce M Simpson #ifdef KTR 8678f002c6cSBruce M Simpson char ip6tbuf[INET6_ADDRSTRLEN]; 8688f002c6cSBruce M Simpson 8698f002c6cSBruce M Simpson ip6_sprintf(ip6tbuf, &lims->im6s_addr); 8708f002c6cSBruce M Simpson #endif 8718f002c6cSBruce M Simpson 8728f002c6cSBruce M Simpson if (lims->im6sl_st[0] == MCAST_EXCLUDE) { 8738f002c6cSBruce M Simpson CTR3(KTR_MLD, "%s: t1 ex -= %d on %s", __func__, n, ip6tbuf); 8748f002c6cSBruce M Simpson ims->im6s_st[1].ex -= n; 8758f002c6cSBruce M Simpson } else if (lims->im6sl_st[0] == MCAST_INCLUDE) { 8768f002c6cSBruce M Simpson CTR3(KTR_MLD, "%s: t1 in -= %d on %s", __func__, n, ip6tbuf); 8778f002c6cSBruce M Simpson ims->im6s_st[1].in -= n; 8788f002c6cSBruce M Simpson } 8798f002c6cSBruce M Simpson 8808f002c6cSBruce M Simpson if (lims->im6sl_st[1] == MCAST_EXCLUDE) { 8818f002c6cSBruce M Simpson CTR3(KTR_MLD, "%s: t1 ex += %d on %s", __func__, n, ip6tbuf); 8828f002c6cSBruce M Simpson ims->im6s_st[1].ex += n; 8838f002c6cSBruce M Simpson } else if (lims->im6sl_st[1] == MCAST_INCLUDE) { 8848f002c6cSBruce M Simpson CTR3(KTR_MLD, "%s: t1 in += %d on %s", __func__, n, ip6tbuf); 8858f002c6cSBruce M Simpson ims->im6s_st[1].in += n; 8868f002c6cSBruce M Simpson } 8878f002c6cSBruce M Simpson } 8888f002c6cSBruce M Simpson 8898f002c6cSBruce M Simpson /* 8908f002c6cSBruce M Simpson * Atomically update the global in6_multi state, when a membership's 8918f002c6cSBruce M Simpson * filter list is being updated in any way. 8928f002c6cSBruce M Simpson * 8938f002c6cSBruce M Simpson * imf is the per-inpcb-membership group filter pointer. 8948f002c6cSBruce M Simpson * A fake imf may be passed for in-kernel consumers. 8958f002c6cSBruce M Simpson * 8968f002c6cSBruce M Simpson * XXX This is a candidate for a set-symmetric-difference style loop 8978f002c6cSBruce M Simpson * which would eliminate the repeated lookup from root of ims nodes, 8988f002c6cSBruce M Simpson * as they share the same key space. 8998f002c6cSBruce M Simpson * 9008f002c6cSBruce M Simpson * If any error occurred this function will back out of refcounts 9018f002c6cSBruce M Simpson * and return a non-zero value. 9028f002c6cSBruce M Simpson */ 9038f002c6cSBruce M Simpson static int 9048f002c6cSBruce M Simpson in6m_merge(struct in6_multi *inm, /*const*/ struct in6_mfilter *imf) 9058f002c6cSBruce M Simpson { 9068f002c6cSBruce M Simpson struct ip6_msource *ims, *nims; 9078f002c6cSBruce M Simpson struct in6_msource *lims; 9088f002c6cSBruce M Simpson int schanged, error; 9098f002c6cSBruce M Simpson int nsrc0, nsrc1; 9108f002c6cSBruce M Simpson 9118f002c6cSBruce M Simpson schanged = 0; 9128f002c6cSBruce M Simpson error = 0; 9138f002c6cSBruce M Simpson nsrc1 = nsrc0 = 0; 9148f002c6cSBruce M Simpson 9158f002c6cSBruce M Simpson /* 9168f002c6cSBruce M Simpson * Update the source filters first, as this may fail. 9178f002c6cSBruce M Simpson * Maintain count of in-mode filters at t0, t1. These are 9188f002c6cSBruce M Simpson * used to work out if we transition into ASM mode or not. 9198f002c6cSBruce M Simpson * Maintain a count of source filters whose state was 9208f002c6cSBruce M Simpson * actually modified by this operation. 9218f002c6cSBruce M Simpson */ 9228f002c6cSBruce M Simpson RB_FOREACH(ims, ip6_msource_tree, &imf->im6f_sources) { 9238f002c6cSBruce M Simpson lims = (struct in6_msource *)ims; 9248f002c6cSBruce M Simpson if (lims->im6sl_st[0] == imf->im6f_st[0]) nsrc0++; 9258f002c6cSBruce M Simpson if (lims->im6sl_st[1] == imf->im6f_st[1]) nsrc1++; 9268f002c6cSBruce M Simpson if (lims->im6sl_st[0] == lims->im6sl_st[1]) continue; 9278f002c6cSBruce M Simpson error = in6m_get_source(inm, &lims->im6s_addr, 0, &nims); 9288f002c6cSBruce M Simpson ++schanged; 9298f002c6cSBruce M Simpson if (error) 9308f002c6cSBruce M Simpson break; 9318f002c6cSBruce M Simpson im6s_merge(nims, lims, 0); 9328f002c6cSBruce M Simpson } 9338f002c6cSBruce M Simpson if (error) { 9348f002c6cSBruce M Simpson struct ip6_msource *bims; 9358f002c6cSBruce M Simpson 9368f002c6cSBruce M Simpson RB_FOREACH_REVERSE_FROM(ims, ip6_msource_tree, nims) { 9378f002c6cSBruce M Simpson lims = (struct in6_msource *)ims; 9388f002c6cSBruce M Simpson if (lims->im6sl_st[0] == lims->im6sl_st[1]) 9398f002c6cSBruce M Simpson continue; 9408f002c6cSBruce M Simpson (void)in6m_get_source(inm, &lims->im6s_addr, 1, &bims); 9418f002c6cSBruce M Simpson if (bims == NULL) 9428f002c6cSBruce M Simpson continue; 9438f002c6cSBruce M Simpson im6s_merge(bims, lims, 1); 9448f002c6cSBruce M Simpson } 9458f002c6cSBruce M Simpson goto out_reap; 9468f002c6cSBruce M Simpson } 9478f002c6cSBruce M Simpson 9488f002c6cSBruce M Simpson CTR3(KTR_MLD, "%s: imf filters in-mode: %d at t0, %d at t1", 9498f002c6cSBruce M Simpson __func__, nsrc0, nsrc1); 9508f002c6cSBruce M Simpson 9518f002c6cSBruce M Simpson /* Handle transition between INCLUDE {n} and INCLUDE {} on socket. */ 9528f002c6cSBruce M Simpson if (imf->im6f_st[0] == imf->im6f_st[1] && 9538f002c6cSBruce M Simpson imf->im6f_st[1] == MCAST_INCLUDE) { 9548f002c6cSBruce M Simpson if (nsrc1 == 0) { 9558f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: --in on inm at t1", __func__); 9568f002c6cSBruce M Simpson --inm->in6m_st[1].iss_in; 9578f002c6cSBruce M Simpson } 9588f002c6cSBruce M Simpson } 9598f002c6cSBruce M Simpson 9608f002c6cSBruce M Simpson /* Handle filter mode transition on socket. */ 9618f002c6cSBruce M Simpson if (imf->im6f_st[0] != imf->im6f_st[1]) { 9628f002c6cSBruce M Simpson CTR3(KTR_MLD, "%s: imf transition %d to %d", 9638f002c6cSBruce M Simpson __func__, imf->im6f_st[0], imf->im6f_st[1]); 9648f002c6cSBruce M Simpson 9658f002c6cSBruce M Simpson if (imf->im6f_st[0] == MCAST_EXCLUDE) { 9668f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: --ex on inm at t1", __func__); 9678f002c6cSBruce M Simpson --inm->in6m_st[1].iss_ex; 9688f002c6cSBruce M Simpson } else if (imf->im6f_st[0] == MCAST_INCLUDE) { 9698f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: --in on inm at t1", __func__); 9708f002c6cSBruce M Simpson --inm->in6m_st[1].iss_in; 9718f002c6cSBruce M Simpson } 9728f002c6cSBruce M Simpson 9738f002c6cSBruce M Simpson if (imf->im6f_st[1] == MCAST_EXCLUDE) { 9748f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: ex++ on inm at t1", __func__); 9758f002c6cSBruce M Simpson inm->in6m_st[1].iss_ex++; 9768f002c6cSBruce M Simpson } else if (imf->im6f_st[1] == MCAST_INCLUDE && nsrc1 > 0) { 9778f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: in++ on inm at t1", __func__); 9788f002c6cSBruce M Simpson inm->in6m_st[1].iss_in++; 9798f002c6cSBruce M Simpson } 9808f002c6cSBruce M Simpson } 9818f002c6cSBruce M Simpson 9828f002c6cSBruce M Simpson /* 9838f002c6cSBruce M Simpson * Track inm filter state in terms of listener counts. 9848f002c6cSBruce M Simpson * If there are any exclusive listeners, stack-wide 9858f002c6cSBruce M Simpson * membership is exclusive. 9868f002c6cSBruce M Simpson * Otherwise, if only inclusive listeners, stack-wide is inclusive. 9878f002c6cSBruce M Simpson * If no listeners remain, state is undefined at t1, 9888f002c6cSBruce M Simpson * and the MLD lifecycle for this group should finish. 9898f002c6cSBruce M Simpson */ 9908f002c6cSBruce M Simpson if (inm->in6m_st[1].iss_ex > 0) { 9918f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: transition to EX", __func__); 9928f002c6cSBruce M Simpson inm->in6m_st[1].iss_fmode = MCAST_EXCLUDE; 9938f002c6cSBruce M Simpson } else if (inm->in6m_st[1].iss_in > 0) { 9948f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: transition to IN", __func__); 9958f002c6cSBruce M Simpson inm->in6m_st[1].iss_fmode = MCAST_INCLUDE; 9968f002c6cSBruce M Simpson } else { 9978f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: transition to UNDEF", __func__); 9988f002c6cSBruce M Simpson inm->in6m_st[1].iss_fmode = MCAST_UNDEFINED; 9998f002c6cSBruce M Simpson } 10008f002c6cSBruce M Simpson 10018f002c6cSBruce M Simpson /* Decrement ASM listener count on transition out of ASM mode. */ 10028f002c6cSBruce M Simpson if (imf->im6f_st[0] == MCAST_EXCLUDE && nsrc0 == 0) { 10038f002c6cSBruce M Simpson if ((imf->im6f_st[1] != MCAST_EXCLUDE) || 1004bd745936SEnji Cooper (imf->im6f_st[1] == MCAST_EXCLUDE && nsrc1 > 0)) { 10058f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: --asm on inm at t1", __func__); 10068f002c6cSBruce M Simpson --inm->in6m_st[1].iss_asm; 10078f002c6cSBruce M Simpson } 1008bd745936SEnji Cooper } 10098f002c6cSBruce M Simpson 10108f002c6cSBruce M Simpson /* Increment ASM listener count on transition to ASM mode. */ 10118f002c6cSBruce M Simpson if (imf->im6f_st[1] == MCAST_EXCLUDE && nsrc1 == 0) { 10128f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: asm++ on inm at t1", __func__); 10138f002c6cSBruce M Simpson inm->in6m_st[1].iss_asm++; 10148f002c6cSBruce M Simpson } 10158f002c6cSBruce M Simpson 10168f002c6cSBruce M Simpson CTR3(KTR_MLD, "%s: merged imf %p to inm %p", __func__, imf, inm); 10178f002c6cSBruce M Simpson in6m_print(inm); 10188f002c6cSBruce M Simpson 10198f002c6cSBruce M Simpson out_reap: 10208f002c6cSBruce M Simpson if (schanged > 0) { 10218f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: sources changed; reaping", __func__); 10228f002c6cSBruce M Simpson in6m_reap(inm); 10238f002c6cSBruce M Simpson } 10248f002c6cSBruce M Simpson return (error); 10258f002c6cSBruce M Simpson } 10268f002c6cSBruce M Simpson 10278f002c6cSBruce M Simpson /* 10288f002c6cSBruce M Simpson * Mark an in6_multi's filter set deltas as committed. 10298f002c6cSBruce M Simpson * Called by MLD after a state change has been enqueued. 10308f002c6cSBruce M Simpson */ 10318f002c6cSBruce M Simpson void 10328f002c6cSBruce M Simpson in6m_commit(struct in6_multi *inm) 10338f002c6cSBruce M Simpson { 10348f002c6cSBruce M Simpson struct ip6_msource *ims; 10358f002c6cSBruce M Simpson 10368f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: commit inm %p", __func__, inm); 10378f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: pre commit:", __func__); 10388f002c6cSBruce M Simpson in6m_print(inm); 10398f002c6cSBruce M Simpson 10408f002c6cSBruce M Simpson RB_FOREACH(ims, ip6_msource_tree, &inm->in6m_srcs) { 10418f002c6cSBruce M Simpson ims->im6s_st[0] = ims->im6s_st[1]; 10428f002c6cSBruce M Simpson } 10438f002c6cSBruce M Simpson inm->in6m_st[0] = inm->in6m_st[1]; 10448f002c6cSBruce M Simpson } 10458f002c6cSBruce M Simpson 10468f002c6cSBruce M Simpson /* 10478f002c6cSBruce M Simpson * Reap unreferenced nodes from an in6_multi's filter set. 10488f002c6cSBruce M Simpson */ 10498f002c6cSBruce M Simpson static void 10508f002c6cSBruce M Simpson in6m_reap(struct in6_multi *inm) 10518f002c6cSBruce M Simpson { 10528f002c6cSBruce M Simpson struct ip6_msource *ims, *tims; 10538f002c6cSBruce M Simpson 10548f002c6cSBruce M Simpson RB_FOREACH_SAFE(ims, ip6_msource_tree, &inm->in6m_srcs, tims) { 10558f002c6cSBruce M Simpson if (ims->im6s_st[0].ex > 0 || ims->im6s_st[0].in > 0 || 10568f002c6cSBruce M Simpson ims->im6s_st[1].ex > 0 || ims->im6s_st[1].in > 0 || 10578f002c6cSBruce M Simpson ims->im6s_stp != 0) 10588f002c6cSBruce M Simpson continue; 10598f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: free ims %p", __func__, ims); 10608f002c6cSBruce M Simpson RB_REMOVE(ip6_msource_tree, &inm->in6m_srcs, ims); 10618f002c6cSBruce M Simpson free(ims, M_IP6MSOURCE); 10628f002c6cSBruce M Simpson inm->in6m_nsrc--; 10638f002c6cSBruce M Simpson } 10648f002c6cSBruce M Simpson } 10658f002c6cSBruce M Simpson 10668f002c6cSBruce M Simpson /* 10678f002c6cSBruce M Simpson * Purge all source nodes from an in6_multi's filter set. 10688f002c6cSBruce M Simpson */ 10698f002c6cSBruce M Simpson static void 10708f002c6cSBruce M Simpson in6m_purge(struct in6_multi *inm) 10718f002c6cSBruce M Simpson { 10728f002c6cSBruce M Simpson struct ip6_msource *ims, *tims; 10738f002c6cSBruce M Simpson 10748f002c6cSBruce M Simpson RB_FOREACH_SAFE(ims, ip6_msource_tree, &inm->in6m_srcs, tims) { 10758f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: free ims %p", __func__, ims); 10768f002c6cSBruce M Simpson RB_REMOVE(ip6_msource_tree, &inm->in6m_srcs, ims); 10778f002c6cSBruce M Simpson free(ims, M_IP6MSOURCE); 10788f002c6cSBruce M Simpson inm->in6m_nsrc--; 10798f002c6cSBruce M Simpson } 10803c268b3aSAndrey V. Elsukov /* Free state-change requests that might be queued. */ 1081a99c84d4SGleb Smirnoff mbufq_drain(&inm->in6m_scq); 10828f002c6cSBruce M Simpson } 10838f002c6cSBruce M Simpson 10848f002c6cSBruce M Simpson /* 10858f002c6cSBruce M Simpson * Join a multicast address w/o sources. 10868f002c6cSBruce M Simpson * KAME compatibility entry point. 10878f002c6cSBruce M Simpson * 10888f002c6cSBruce M Simpson * SMPng: Assume no mc locks held by caller. 10898f002c6cSBruce M Simpson */ 10908f002c6cSBruce M Simpson struct in6_multi_mship * 10918f002c6cSBruce M Simpson in6_joingroup(struct ifnet *ifp, struct in6_addr *mcaddr, 10928f002c6cSBruce M Simpson int *errorp, int delay) 10938f002c6cSBruce M Simpson { 10948f002c6cSBruce M Simpson struct in6_multi_mship *imm; 10958f002c6cSBruce M Simpson int error; 10968f002c6cSBruce M Simpson 10978f002c6cSBruce M Simpson imm = malloc(sizeof(*imm), M_IP6MADDR, M_NOWAIT); 10988f002c6cSBruce M Simpson if (imm == NULL) { 10998f002c6cSBruce M Simpson *errorp = ENOBUFS; 11008f002c6cSBruce M Simpson return (NULL); 11018f002c6cSBruce M Simpson } 11028f002c6cSBruce M Simpson 11038f002c6cSBruce M Simpson delay = (delay * PR_FASTHZ) / hz; 11048f002c6cSBruce M Simpson 11058f002c6cSBruce M Simpson error = in6_mc_join(ifp, mcaddr, NULL, &imm->i6mm_maddr, delay); 11068f002c6cSBruce M Simpson if (error) { 11078f002c6cSBruce M Simpson *errorp = error; 11088f002c6cSBruce M Simpson free(imm, M_IP6MADDR); 11098f002c6cSBruce M Simpson return (NULL); 11108f002c6cSBruce M Simpson } 11118f002c6cSBruce M Simpson 11128f002c6cSBruce M Simpson return (imm); 11138f002c6cSBruce M Simpson } 11148f002c6cSBruce M Simpson 11158f002c6cSBruce M Simpson /* 11168f002c6cSBruce M Simpson * Leave a multicast address w/o sources. 11178f002c6cSBruce M Simpson * KAME compatibility entry point. 11188f002c6cSBruce M Simpson * 11198f002c6cSBruce M Simpson * SMPng: Assume no mc locks held by caller. 11208f002c6cSBruce M Simpson */ 11218f002c6cSBruce M Simpson int 11228f002c6cSBruce M Simpson in6_leavegroup(struct in6_multi_mship *imm) 11238f002c6cSBruce M Simpson { 11248f002c6cSBruce M Simpson 11258f002c6cSBruce M Simpson if (imm->i6mm_maddr != NULL) 11268f002c6cSBruce M Simpson in6_mc_leave(imm->i6mm_maddr, NULL); 11278f002c6cSBruce M Simpson free(imm, M_IP6MADDR); 11288f002c6cSBruce M Simpson return 0; 11298f002c6cSBruce M Simpson } 11308f002c6cSBruce M Simpson 11318f002c6cSBruce M Simpson /* 11328f002c6cSBruce M Simpson * Join a multicast group; unlocked entry point. 11338f002c6cSBruce M Simpson * 11348f002c6cSBruce M Simpson * SMPng: XXX: in6_mc_join() is called from in6_control() when upper 11358f002c6cSBruce M Simpson * locks are not held. Fortunately, ifp is unlikely to have been detached 11368f002c6cSBruce M Simpson * at this point, so we assume it's OK to recurse. 11378f002c6cSBruce M Simpson */ 11388f002c6cSBruce M Simpson int 11398f002c6cSBruce M Simpson in6_mc_join(struct ifnet *ifp, const struct in6_addr *mcaddr, 11408f002c6cSBruce M Simpson /*const*/ struct in6_mfilter *imf, struct in6_multi **pinm, 11418f002c6cSBruce M Simpson const int delay) 11428f002c6cSBruce M Simpson { 11438f002c6cSBruce M Simpson int error; 11448f002c6cSBruce M Simpson 11458f002c6cSBruce M Simpson IN6_MULTI_LOCK(); 11468f002c6cSBruce M Simpson error = in6_mc_join_locked(ifp, mcaddr, imf, pinm, delay); 11478f002c6cSBruce M Simpson IN6_MULTI_UNLOCK(); 11488f002c6cSBruce M Simpson 11498f002c6cSBruce M Simpson return (error); 11508f002c6cSBruce M Simpson } 11518f002c6cSBruce M Simpson 11528f002c6cSBruce M Simpson /* 11538f002c6cSBruce M Simpson * Join a multicast group; real entry point. 11548f002c6cSBruce M Simpson * 11558f002c6cSBruce M Simpson * Only preserves atomicity at inm level. 11568f002c6cSBruce M Simpson * NOTE: imf argument cannot be const due to sys/tree.h limitations. 11578f002c6cSBruce M Simpson * 11588f002c6cSBruce M Simpson * If the MLD downcall fails, the group is not joined, and an error 11598f002c6cSBruce M Simpson * code is returned. 11608f002c6cSBruce M Simpson */ 11618f002c6cSBruce M Simpson int 11628f002c6cSBruce M Simpson in6_mc_join_locked(struct ifnet *ifp, const struct in6_addr *mcaddr, 11638f002c6cSBruce M Simpson /*const*/ struct in6_mfilter *imf, struct in6_multi **pinm, 11648f002c6cSBruce M Simpson const int delay) 11658f002c6cSBruce M Simpson { 11668f002c6cSBruce M Simpson struct in6_mfilter timf; 11678f002c6cSBruce M Simpson struct in6_multi *inm; 11688f002c6cSBruce M Simpson int error; 11698f002c6cSBruce M Simpson #ifdef KTR 11708f002c6cSBruce M Simpson char ip6tbuf[INET6_ADDRSTRLEN]; 11718f002c6cSBruce M Simpson #endif 11728f002c6cSBruce M Simpson 117329dc7bc6SBruce M Simpson #ifdef INVARIANTS 117429dc7bc6SBruce M Simpson /* 117529dc7bc6SBruce M Simpson * Sanity: Check scope zone ID was set for ifp, if and 117629dc7bc6SBruce M Simpson * only if group is scoped to an interface. 117729dc7bc6SBruce M Simpson */ 117829dc7bc6SBruce M Simpson KASSERT(IN6_IS_ADDR_MULTICAST(mcaddr), 117929dc7bc6SBruce M Simpson ("%s: not a multicast address", __func__)); 118029dc7bc6SBruce M Simpson if (IN6_IS_ADDR_MC_LINKLOCAL(mcaddr) || 118129dc7bc6SBruce M Simpson IN6_IS_ADDR_MC_INTFACELOCAL(mcaddr)) { 118229dc7bc6SBruce M Simpson KASSERT(mcaddr->s6_addr16[1] != 0, 118329dc7bc6SBruce M Simpson ("%s: scope zone ID not set", __func__)); 118429dc7bc6SBruce M Simpson } 118529dc7bc6SBruce M Simpson #endif 118629dc7bc6SBruce M Simpson 11878f002c6cSBruce M Simpson IN6_MULTI_LOCK_ASSERT(); 11888f002c6cSBruce M Simpson 11898f002c6cSBruce M Simpson CTR4(KTR_MLD, "%s: join %s on %p(%s))", __func__, 1190e74966f6SAndrey V. Elsukov ip6_sprintf(ip6tbuf, mcaddr), ifp, if_name(ifp)); 11918f002c6cSBruce M Simpson 11928f002c6cSBruce M Simpson error = 0; 11938f002c6cSBruce M Simpson inm = NULL; 11948f002c6cSBruce M Simpson 11958f002c6cSBruce M Simpson /* 11968f002c6cSBruce M Simpson * If no imf was specified (i.e. kernel consumer), 11978f002c6cSBruce M Simpson * fake one up and assume it is an ASM join. 11988f002c6cSBruce M Simpson */ 11998f002c6cSBruce M Simpson if (imf == NULL) { 12008f002c6cSBruce M Simpson im6f_init(&timf, MCAST_UNDEFINED, MCAST_EXCLUDE); 12018f002c6cSBruce M Simpson imf = &timf; 12028f002c6cSBruce M Simpson } 12038f002c6cSBruce M Simpson 12048f002c6cSBruce M Simpson error = in6_mc_get(ifp, mcaddr, &inm); 12058f002c6cSBruce M Simpson if (error) { 12068f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: in6_mc_get() failure", __func__); 12078f002c6cSBruce M Simpson return (error); 12088f002c6cSBruce M Simpson } 12098f002c6cSBruce M Simpson 12108f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: merge inm state", __func__); 12118f002c6cSBruce M Simpson error = in6m_merge(inm, imf); 12128f002c6cSBruce M Simpson if (error) { 12138f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: failed to merge inm state", __func__); 12148f002c6cSBruce M Simpson goto out_in6m_release; 12158f002c6cSBruce M Simpson } 12168f002c6cSBruce M Simpson 12178f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: doing mld downcall", __func__); 12188f002c6cSBruce M Simpson error = mld_change_state(inm, delay); 12198f002c6cSBruce M Simpson if (error) { 12208f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: failed to update source", __func__); 12218f002c6cSBruce M Simpson goto out_in6m_release; 12228f002c6cSBruce M Simpson } 12238f002c6cSBruce M Simpson 12248f002c6cSBruce M Simpson out_in6m_release: 12258f002c6cSBruce M Simpson if (error) { 12268f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: dropping ref on %p", __func__, inm); 12278f002c6cSBruce M Simpson in6m_release_locked(inm); 12288f002c6cSBruce M Simpson } else { 12298f002c6cSBruce M Simpson *pinm = inm; 12308f002c6cSBruce M Simpson } 12318f002c6cSBruce M Simpson 12328f002c6cSBruce M Simpson return (error); 12338f002c6cSBruce M Simpson } 12348f002c6cSBruce M Simpson 12358f002c6cSBruce M Simpson /* 12368f002c6cSBruce M Simpson * Leave a multicast group; unlocked entry point. 12378f002c6cSBruce M Simpson */ 12388f002c6cSBruce M Simpson int 12398f002c6cSBruce M Simpson in6_mc_leave(struct in6_multi *inm, /*const*/ struct in6_mfilter *imf) 12408f002c6cSBruce M Simpson { 12418f002c6cSBruce M Simpson struct ifnet *ifp; 12428f002c6cSBruce M Simpson int error; 12438f002c6cSBruce M Simpson 12448f002c6cSBruce M Simpson ifp = inm->in6m_ifp; 12458f002c6cSBruce M Simpson 12468f002c6cSBruce M Simpson IN6_MULTI_LOCK(); 12478f002c6cSBruce M Simpson error = in6_mc_leave_locked(inm, imf); 12488f002c6cSBruce M Simpson IN6_MULTI_UNLOCK(); 12498f002c6cSBruce M Simpson 12508f002c6cSBruce M Simpson return (error); 12518f002c6cSBruce M Simpson } 12528f002c6cSBruce M Simpson 12538f002c6cSBruce M Simpson /* 12548f002c6cSBruce M Simpson * Leave a multicast group; real entry point. 12558f002c6cSBruce M Simpson * All source filters will be expunged. 12568f002c6cSBruce M Simpson * 12578f002c6cSBruce M Simpson * Only preserves atomicity at inm level. 12588f002c6cSBruce M Simpson * 12598f002c6cSBruce M Simpson * Holding the write lock for the INP which contains imf 12608f002c6cSBruce M Simpson * is highly advisable. We can't assert for it as imf does not 12618f002c6cSBruce M Simpson * contain a back-pointer to the owning inp. 12628f002c6cSBruce M Simpson * 12638f002c6cSBruce M Simpson * Note: This is not the same as in6m_release(*) as this function also 12648f002c6cSBruce M Simpson * makes a state change downcall into MLD. 12658f002c6cSBruce M Simpson */ 12668f002c6cSBruce M Simpson int 12678f002c6cSBruce M Simpson in6_mc_leave_locked(struct in6_multi *inm, /*const*/ struct in6_mfilter *imf) 12688f002c6cSBruce M Simpson { 12698f002c6cSBruce M Simpson struct in6_mfilter timf; 12708f002c6cSBruce M Simpson int error; 12718f002c6cSBruce M Simpson #ifdef KTR 12728f002c6cSBruce M Simpson char ip6tbuf[INET6_ADDRSTRLEN]; 12738f002c6cSBruce M Simpson #endif 12748f002c6cSBruce M Simpson 12758f002c6cSBruce M Simpson error = 0; 12768f002c6cSBruce M Simpson 12778f002c6cSBruce M Simpson IN6_MULTI_LOCK_ASSERT(); 12788f002c6cSBruce M Simpson 12798f002c6cSBruce M Simpson CTR5(KTR_MLD, "%s: leave inm %p, %s/%s, imf %p", __func__, 12808f002c6cSBruce M Simpson inm, ip6_sprintf(ip6tbuf, &inm->in6m_addr), 1281e74966f6SAndrey V. Elsukov (in6m_is_ifp_detached(inm) ? "null" : if_name(inm->in6m_ifp)), 12828f002c6cSBruce M Simpson imf); 12838f002c6cSBruce M Simpson 12848f002c6cSBruce M Simpson /* 12858f002c6cSBruce M Simpson * If no imf was specified (i.e. kernel consumer), 12868f002c6cSBruce M Simpson * fake one up and assume it is an ASM join. 12878f002c6cSBruce M Simpson */ 12888f002c6cSBruce M Simpson if (imf == NULL) { 12898f002c6cSBruce M Simpson im6f_init(&timf, MCAST_EXCLUDE, MCAST_UNDEFINED); 12908f002c6cSBruce M Simpson imf = &timf; 12918f002c6cSBruce M Simpson } 12928f002c6cSBruce M Simpson 12938f002c6cSBruce M Simpson /* 12948f002c6cSBruce M Simpson * Begin state merge transaction at MLD layer. 12958f002c6cSBruce M Simpson * 12968f002c6cSBruce M Simpson * As this particular invocation should not cause any memory 12978f002c6cSBruce M Simpson * to be allocated, and there is no opportunity to roll back 12988f002c6cSBruce M Simpson * the transaction, it MUST NOT fail. 12998f002c6cSBruce M Simpson */ 13008f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: merge inm state", __func__); 13018f002c6cSBruce M Simpson error = in6m_merge(inm, imf); 13028f002c6cSBruce M Simpson KASSERT(error == 0, ("%s: failed to merge inm state", __func__)); 13038f002c6cSBruce M Simpson 13048f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: doing mld downcall", __func__); 13058f002c6cSBruce M Simpson error = mld_change_state(inm, 0); 13068f002c6cSBruce M Simpson if (error) 13078f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: failed mld downcall", __func__); 13088f002c6cSBruce M Simpson 13098f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: dropping ref on %p", __func__, inm); 13108f002c6cSBruce M Simpson in6m_release_locked(inm); 13118f002c6cSBruce M Simpson 13128f002c6cSBruce M Simpson return (error); 13138f002c6cSBruce M Simpson } 13148f002c6cSBruce M Simpson 13158f002c6cSBruce M Simpson /* 13168f002c6cSBruce M Simpson * Block or unblock an ASM multicast source on an inpcb. 13178f002c6cSBruce M Simpson * This implements the delta-based API described in RFC 3678. 13188f002c6cSBruce M Simpson * 13198f002c6cSBruce M Simpson * The delta-based API applies only to exclusive-mode memberships. 13208f002c6cSBruce M Simpson * An MLD downcall will be performed. 13218f002c6cSBruce M Simpson * 13228f002c6cSBruce M Simpson * SMPng: NOTE: Must take Giant as a join may create a new ifma. 13238f002c6cSBruce M Simpson * 13248f002c6cSBruce M Simpson * Return 0 if successful, otherwise return an appropriate error code. 13258f002c6cSBruce M Simpson */ 13268f002c6cSBruce M Simpson static int 13278f002c6cSBruce M Simpson in6p_block_unblock_source(struct inpcb *inp, struct sockopt *sopt) 13288f002c6cSBruce M Simpson { 13298f002c6cSBruce M Simpson struct group_source_req gsr; 13308f002c6cSBruce M Simpson sockunion_t *gsa, *ssa; 13318f002c6cSBruce M Simpson struct ifnet *ifp; 13328f002c6cSBruce M Simpson struct in6_mfilter *imf; 13338f002c6cSBruce M Simpson struct ip6_moptions *imo; 13348f002c6cSBruce M Simpson struct in6_msource *ims; 13358f002c6cSBruce M Simpson struct in6_multi *inm; 13368f002c6cSBruce M Simpson size_t idx; 13378f002c6cSBruce M Simpson uint16_t fmode; 13388f002c6cSBruce M Simpson int error, doblock; 13398f002c6cSBruce M Simpson #ifdef KTR 13408f002c6cSBruce M Simpson char ip6tbuf[INET6_ADDRSTRLEN]; 13418f002c6cSBruce M Simpson #endif 13428f002c6cSBruce M Simpson 13438f002c6cSBruce M Simpson ifp = NULL; 13448f002c6cSBruce M Simpson error = 0; 13458f002c6cSBruce M Simpson doblock = 0; 13468f002c6cSBruce M Simpson 13478f002c6cSBruce M Simpson memset(&gsr, 0, sizeof(struct group_source_req)); 13488f002c6cSBruce M Simpson gsa = (sockunion_t *)&gsr.gsr_group; 13498f002c6cSBruce M Simpson ssa = (sockunion_t *)&gsr.gsr_source; 13508f002c6cSBruce M Simpson 13518f002c6cSBruce M Simpson switch (sopt->sopt_name) { 13528f002c6cSBruce M Simpson case MCAST_BLOCK_SOURCE: 13538f002c6cSBruce M Simpson case MCAST_UNBLOCK_SOURCE: 13548f002c6cSBruce M Simpson error = sooptcopyin(sopt, &gsr, 13558f002c6cSBruce M Simpson sizeof(struct group_source_req), 13568f002c6cSBruce M Simpson sizeof(struct group_source_req)); 13578f002c6cSBruce M Simpson if (error) 13588f002c6cSBruce M Simpson return (error); 13598f002c6cSBruce M Simpson 13608f002c6cSBruce M Simpson if (gsa->sin6.sin6_family != AF_INET6 || 13618f002c6cSBruce M Simpson gsa->sin6.sin6_len != sizeof(struct sockaddr_in6)) 13628f002c6cSBruce M Simpson return (EINVAL); 13638f002c6cSBruce M Simpson 13648f002c6cSBruce M Simpson if (ssa->sin6.sin6_family != AF_INET6 || 13658f002c6cSBruce M Simpson ssa->sin6.sin6_len != sizeof(struct sockaddr_in6)) 13668f002c6cSBruce M Simpson return (EINVAL); 13678f002c6cSBruce M Simpson 13688f002c6cSBruce M Simpson if (gsr.gsr_interface == 0 || V_if_index < gsr.gsr_interface) 13698f002c6cSBruce M Simpson return (EADDRNOTAVAIL); 13708f002c6cSBruce M Simpson 13718f002c6cSBruce M Simpson ifp = ifnet_byindex(gsr.gsr_interface); 13728f002c6cSBruce M Simpson 13738f002c6cSBruce M Simpson if (sopt->sopt_name == MCAST_BLOCK_SOURCE) 13748f002c6cSBruce M Simpson doblock = 1; 13758f002c6cSBruce M Simpson break; 13768f002c6cSBruce M Simpson 13778f002c6cSBruce M Simpson default: 13788f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: unknown sopt_name %d", 13798f002c6cSBruce M Simpson __func__, sopt->sopt_name); 13808f002c6cSBruce M Simpson return (EOPNOTSUPP); 13818f002c6cSBruce M Simpson break; 13828f002c6cSBruce M Simpson } 13838f002c6cSBruce M Simpson 13848f002c6cSBruce M Simpson if (!IN6_IS_ADDR_MULTICAST(&gsa->sin6.sin6_addr)) 13858f002c6cSBruce M Simpson return (EINVAL); 13868f002c6cSBruce M Simpson 138729dc7bc6SBruce M Simpson (void)in6_setscope(&gsa->sin6.sin6_addr, ifp, NULL); 138829dc7bc6SBruce M Simpson 13898f002c6cSBruce M Simpson /* 13908f002c6cSBruce M Simpson * Check if we are actually a member of this group. 13918f002c6cSBruce M Simpson */ 13928f002c6cSBruce M Simpson imo = in6p_findmoptions(inp); 13938f002c6cSBruce M Simpson idx = im6o_match_group(imo, ifp, &gsa->sa); 13948f002c6cSBruce M Simpson if (idx == -1 || imo->im6o_mfilters == NULL) { 13958f002c6cSBruce M Simpson error = EADDRNOTAVAIL; 13968f002c6cSBruce M Simpson goto out_in6p_locked; 13978f002c6cSBruce M Simpson } 13988f002c6cSBruce M Simpson 13998f002c6cSBruce M Simpson KASSERT(imo->im6o_mfilters != NULL, 14008f002c6cSBruce M Simpson ("%s: im6o_mfilters not allocated", __func__)); 14018f002c6cSBruce M Simpson imf = &imo->im6o_mfilters[idx]; 14028f002c6cSBruce M Simpson inm = imo->im6o_membership[idx]; 14038f002c6cSBruce M Simpson 14048f002c6cSBruce M Simpson /* 14058f002c6cSBruce M Simpson * Attempting to use the delta-based API on an 14068f002c6cSBruce M Simpson * non exclusive-mode membership is an error. 14078f002c6cSBruce M Simpson */ 14088f002c6cSBruce M Simpson fmode = imf->im6f_st[0]; 14098f002c6cSBruce M Simpson if (fmode != MCAST_EXCLUDE) { 14108f002c6cSBruce M Simpson error = EINVAL; 14118f002c6cSBruce M Simpson goto out_in6p_locked; 14128f002c6cSBruce M Simpson } 14138f002c6cSBruce M Simpson 14148f002c6cSBruce M Simpson /* 14158f002c6cSBruce M Simpson * Deal with error cases up-front: 14168f002c6cSBruce M Simpson * Asked to block, but already blocked; or 14178f002c6cSBruce M Simpson * Asked to unblock, but nothing to unblock. 14188f002c6cSBruce M Simpson * If adding a new block entry, allocate it. 14198f002c6cSBruce M Simpson */ 14208f002c6cSBruce M Simpson ims = im6o_match_source(imo, idx, &ssa->sa); 14218f002c6cSBruce M Simpson if ((ims != NULL && doblock) || (ims == NULL && !doblock)) { 14228f002c6cSBruce M Simpson CTR3(KTR_MLD, "%s: source %s %spresent", __func__, 14238f002c6cSBruce M Simpson ip6_sprintf(ip6tbuf, &ssa->sin6.sin6_addr), 14248f002c6cSBruce M Simpson doblock ? "" : "not "); 14258f002c6cSBruce M Simpson error = EADDRNOTAVAIL; 14268f002c6cSBruce M Simpson goto out_in6p_locked; 14278f002c6cSBruce M Simpson } 14288f002c6cSBruce M Simpson 14298f002c6cSBruce M Simpson INP_WLOCK_ASSERT(inp); 14308f002c6cSBruce M Simpson 14318f002c6cSBruce M Simpson /* 14328f002c6cSBruce M Simpson * Begin state merge transaction at socket layer. 14338f002c6cSBruce M Simpson */ 14348f002c6cSBruce M Simpson if (doblock) { 14358f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: %s source", __func__, "block"); 14368f002c6cSBruce M Simpson ims = im6f_graft(imf, fmode, &ssa->sin6); 14378f002c6cSBruce M Simpson if (ims == NULL) 14388f002c6cSBruce M Simpson error = ENOMEM; 14398f002c6cSBruce M Simpson } else { 14408f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: %s source", __func__, "allow"); 14418f002c6cSBruce M Simpson error = im6f_prune(imf, &ssa->sin6); 14428f002c6cSBruce M Simpson } 14438f002c6cSBruce M Simpson 14448f002c6cSBruce M Simpson if (error) { 14458f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: merge imf state failed", __func__); 14468f002c6cSBruce M Simpson goto out_im6f_rollback; 14478f002c6cSBruce M Simpson } 14488f002c6cSBruce M Simpson 14498f002c6cSBruce M Simpson /* 14508f002c6cSBruce M Simpson * Begin state merge transaction at MLD layer. 14518f002c6cSBruce M Simpson */ 14528f002c6cSBruce M Simpson IN6_MULTI_LOCK(); 14538f002c6cSBruce M Simpson 14548f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: merge inm state", __func__); 14558f002c6cSBruce M Simpson error = in6m_merge(inm, imf); 14564fd91336SAndrey V. Elsukov if (error) 14578f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: failed to merge inm state", __func__); 14584fd91336SAndrey V. Elsukov else { 14598f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: doing mld downcall", __func__); 14608f002c6cSBruce M Simpson error = mld_change_state(inm, 0); 14618f002c6cSBruce M Simpson if (error) 14628f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: failed mld downcall", __func__); 14634fd91336SAndrey V. Elsukov } 14648f002c6cSBruce M Simpson 14658f002c6cSBruce M Simpson IN6_MULTI_UNLOCK(); 14668f002c6cSBruce M Simpson 14678f002c6cSBruce M Simpson out_im6f_rollback: 14688f002c6cSBruce M Simpson if (error) 14698f002c6cSBruce M Simpson im6f_rollback(imf); 14708f002c6cSBruce M Simpson else 14718f002c6cSBruce M Simpson im6f_commit(imf); 14728f002c6cSBruce M Simpson 14738f002c6cSBruce M Simpson im6f_reap(imf); 14748f002c6cSBruce M Simpson 14758f002c6cSBruce M Simpson out_in6p_locked: 14768f002c6cSBruce M Simpson INP_WUNLOCK(inp); 14778f002c6cSBruce M Simpson return (error); 14788f002c6cSBruce M Simpson } 14798f002c6cSBruce M Simpson 14808f002c6cSBruce M Simpson /* 14818f002c6cSBruce M Simpson * Given an inpcb, return its multicast options structure pointer. Accepts 14828f002c6cSBruce M Simpson * an unlocked inpcb pointer, but will return it locked. May sleep. 14838f002c6cSBruce M Simpson * 14848f002c6cSBruce M Simpson * SMPng: NOTE: Potentially calls malloc(M_WAITOK) with Giant held. 14858f002c6cSBruce M Simpson * SMPng: NOTE: Returns with the INP write lock held. 14868f002c6cSBruce M Simpson */ 14878f002c6cSBruce M Simpson static struct ip6_moptions * 14888f002c6cSBruce M Simpson in6p_findmoptions(struct inpcb *inp) 14898f002c6cSBruce M Simpson { 14908f002c6cSBruce M Simpson struct ip6_moptions *imo; 14918f002c6cSBruce M Simpson struct in6_multi **immp; 14928f002c6cSBruce M Simpson struct in6_mfilter *imfp; 14938f002c6cSBruce M Simpson size_t idx; 14948f002c6cSBruce M Simpson 14958f002c6cSBruce M Simpson INP_WLOCK(inp); 14968f002c6cSBruce M Simpson if (inp->in6p_moptions != NULL) 14978f002c6cSBruce M Simpson return (inp->in6p_moptions); 14988f002c6cSBruce M Simpson 14998f002c6cSBruce M Simpson INP_WUNLOCK(inp); 15008f002c6cSBruce M Simpson 15018f002c6cSBruce M Simpson imo = malloc(sizeof(*imo), M_IP6MOPTS, M_WAITOK); 15028f002c6cSBruce M Simpson immp = malloc(sizeof(*immp) * IPV6_MIN_MEMBERSHIPS, M_IP6MOPTS, 15038f002c6cSBruce M Simpson M_WAITOK | M_ZERO); 15048f002c6cSBruce M Simpson imfp = malloc(sizeof(struct in6_mfilter) * IPV6_MIN_MEMBERSHIPS, 15058f002c6cSBruce M Simpson M_IN6MFILTER, M_WAITOK); 15068f002c6cSBruce M Simpson 15078f002c6cSBruce M Simpson imo->im6o_multicast_ifp = NULL; 15088f002c6cSBruce M Simpson imo->im6o_multicast_hlim = V_ip6_defmcasthlim; 15098f002c6cSBruce M Simpson imo->im6o_multicast_loop = in6_mcast_loop; 15108f002c6cSBruce M Simpson imo->im6o_num_memberships = 0; 15118f002c6cSBruce M Simpson imo->im6o_max_memberships = IPV6_MIN_MEMBERSHIPS; 15128f002c6cSBruce M Simpson imo->im6o_membership = immp; 15138f002c6cSBruce M Simpson 15148f002c6cSBruce M Simpson /* Initialize per-group source filters. */ 15158f002c6cSBruce M Simpson for (idx = 0; idx < IPV6_MIN_MEMBERSHIPS; idx++) 15168f002c6cSBruce M Simpson im6f_init(&imfp[idx], MCAST_UNDEFINED, MCAST_EXCLUDE); 15178f002c6cSBruce M Simpson imo->im6o_mfilters = imfp; 15188f002c6cSBruce M Simpson 15198f002c6cSBruce M Simpson INP_WLOCK(inp); 15208f002c6cSBruce M Simpson if (inp->in6p_moptions != NULL) { 15218f002c6cSBruce M Simpson free(imfp, M_IN6MFILTER); 15228f002c6cSBruce M Simpson free(immp, M_IP6MOPTS); 15238f002c6cSBruce M Simpson free(imo, M_IP6MOPTS); 15248f002c6cSBruce M Simpson return (inp->in6p_moptions); 15258f002c6cSBruce M Simpson } 15268f002c6cSBruce M Simpson inp->in6p_moptions = imo; 15278f002c6cSBruce M Simpson return (imo); 15288f002c6cSBruce M Simpson } 15298f002c6cSBruce M Simpson 15308f002c6cSBruce M Simpson /* 15318f002c6cSBruce M Simpson * Discard the IPv6 multicast options (and source filters). 15328f002c6cSBruce M Simpson * 15338f002c6cSBruce M Simpson * SMPng: NOTE: assumes INP write lock is held. 15348f002c6cSBruce M Simpson */ 15358f002c6cSBruce M Simpson void 15368f002c6cSBruce M Simpson ip6_freemoptions(struct ip6_moptions *imo) 15378f002c6cSBruce M Simpson { 15388f002c6cSBruce M Simpson struct in6_mfilter *imf; 15398f002c6cSBruce M Simpson size_t idx, nmships; 15408f002c6cSBruce M Simpson 15418f002c6cSBruce M Simpson KASSERT(imo != NULL, ("%s: ip6_moptions is NULL", __func__)); 15428f002c6cSBruce M Simpson 15438f002c6cSBruce M Simpson nmships = imo->im6o_num_memberships; 15448f002c6cSBruce M Simpson for (idx = 0; idx < nmships; ++idx) { 15458f002c6cSBruce M Simpson imf = imo->im6o_mfilters ? &imo->im6o_mfilters[idx] : NULL; 15468f002c6cSBruce M Simpson if (imf) 15478f002c6cSBruce M Simpson im6f_leave(imf); 15488f002c6cSBruce M Simpson /* XXX this will thrash the lock(s) */ 15498f002c6cSBruce M Simpson (void)in6_mc_leave(imo->im6o_membership[idx], imf); 15508f002c6cSBruce M Simpson if (imf) 15518f002c6cSBruce M Simpson im6f_purge(imf); 15528f002c6cSBruce M Simpson } 15538f002c6cSBruce M Simpson 15548f002c6cSBruce M Simpson if (imo->im6o_mfilters) 15558f002c6cSBruce M Simpson free(imo->im6o_mfilters, M_IN6MFILTER); 15568f002c6cSBruce M Simpson free(imo->im6o_membership, M_IP6MOPTS); 15578f002c6cSBruce M Simpson free(imo, M_IP6MOPTS); 15588f002c6cSBruce M Simpson } 15598f002c6cSBruce M Simpson 15608f002c6cSBruce M Simpson /* 15618f002c6cSBruce M Simpson * Atomically get source filters on a socket for an IPv6 multicast group. 15628f002c6cSBruce M Simpson * Called with INP lock held; returns with lock released. 15638f002c6cSBruce M Simpson */ 15648f002c6cSBruce M Simpson static int 15658f002c6cSBruce M Simpson in6p_get_source_filters(struct inpcb *inp, struct sockopt *sopt) 15668f002c6cSBruce M Simpson { 15678f002c6cSBruce M Simpson struct __msfilterreq msfr; 15688f002c6cSBruce M Simpson sockunion_t *gsa; 15698f002c6cSBruce M Simpson struct ifnet *ifp; 15708f002c6cSBruce M Simpson struct ip6_moptions *imo; 15718f002c6cSBruce M Simpson struct in6_mfilter *imf; 15728f002c6cSBruce M Simpson struct ip6_msource *ims; 15738f002c6cSBruce M Simpson struct in6_msource *lims; 15748f002c6cSBruce M Simpson struct sockaddr_in6 *psin; 15758f002c6cSBruce M Simpson struct sockaddr_storage *ptss; 15768f002c6cSBruce M Simpson struct sockaddr_storage *tss; 15778f002c6cSBruce M Simpson int error; 15788f002c6cSBruce M Simpson size_t idx, nsrcs, ncsrcs; 15798f002c6cSBruce M Simpson 15808f002c6cSBruce M Simpson INP_WLOCK_ASSERT(inp); 15818f002c6cSBruce M Simpson 15828f002c6cSBruce M Simpson imo = inp->in6p_moptions; 15838f002c6cSBruce M Simpson KASSERT(imo != NULL, ("%s: null ip6_moptions", __func__)); 15848f002c6cSBruce M Simpson 15858f002c6cSBruce M Simpson INP_WUNLOCK(inp); 15868f002c6cSBruce M Simpson 15878f002c6cSBruce M Simpson error = sooptcopyin(sopt, &msfr, sizeof(struct __msfilterreq), 15888f002c6cSBruce M Simpson sizeof(struct __msfilterreq)); 15898f002c6cSBruce M Simpson if (error) 15908f002c6cSBruce M Simpson return (error); 15918f002c6cSBruce M Simpson 159229dc7bc6SBruce M Simpson if (msfr.msfr_group.ss_family != AF_INET6 || 159329dc7bc6SBruce M Simpson msfr.msfr_group.ss_len != sizeof(struct sockaddr_in6)) 15948f002c6cSBruce M Simpson return (EINVAL); 15958f002c6cSBruce M Simpson 159629dc7bc6SBruce M Simpson gsa = (sockunion_t *)&msfr.msfr_group; 159729dc7bc6SBruce M Simpson if (!IN6_IS_ADDR_MULTICAST(&gsa->sin6.sin6_addr)) 159829dc7bc6SBruce M Simpson return (EINVAL); 159929dc7bc6SBruce M Simpson 160029dc7bc6SBruce M Simpson if (msfr.msfr_ifindex == 0 || V_if_index < msfr.msfr_ifindex) 160129dc7bc6SBruce M Simpson return (EADDRNOTAVAIL); 16028f002c6cSBruce M Simpson ifp = ifnet_byindex(msfr.msfr_ifindex); 16038f002c6cSBruce M Simpson if (ifp == NULL) 160429dc7bc6SBruce M Simpson return (EADDRNOTAVAIL); 160529dc7bc6SBruce M Simpson (void)in6_setscope(&gsa->sin6.sin6_addr, ifp, NULL); 16068f002c6cSBruce M Simpson 16078f002c6cSBruce M Simpson INP_WLOCK(inp); 16088f002c6cSBruce M Simpson 16098f002c6cSBruce M Simpson /* 16108f002c6cSBruce M Simpson * Lookup group on the socket. 16118f002c6cSBruce M Simpson */ 16128f002c6cSBruce M Simpson idx = im6o_match_group(imo, ifp, &gsa->sa); 16138f002c6cSBruce M Simpson if (idx == -1 || imo->im6o_mfilters == NULL) { 16148f002c6cSBruce M Simpson INP_WUNLOCK(inp); 16158f002c6cSBruce M Simpson return (EADDRNOTAVAIL); 16168f002c6cSBruce M Simpson } 16178f002c6cSBruce M Simpson imf = &imo->im6o_mfilters[idx]; 16188f002c6cSBruce M Simpson 16198f002c6cSBruce M Simpson /* 16208f002c6cSBruce M Simpson * Ignore memberships which are in limbo. 16218f002c6cSBruce M Simpson */ 16228f002c6cSBruce M Simpson if (imf->im6f_st[1] == MCAST_UNDEFINED) { 16238f002c6cSBruce M Simpson INP_WUNLOCK(inp); 16248f002c6cSBruce M Simpson return (EAGAIN); 16258f002c6cSBruce M Simpson } 16268f002c6cSBruce M Simpson msfr.msfr_fmode = imf->im6f_st[1]; 16278f002c6cSBruce M Simpson 16288f002c6cSBruce M Simpson /* 16298f002c6cSBruce M Simpson * If the user specified a buffer, copy out the source filter 16308f002c6cSBruce M Simpson * entries to userland gracefully. 16318f002c6cSBruce M Simpson * We only copy out the number of entries which userland 16328f002c6cSBruce M Simpson * has asked for, but we always tell userland how big the 16338f002c6cSBruce M Simpson * buffer really needs to be. 16348f002c6cSBruce M Simpson */ 1635acde2476SXin LI if (msfr.msfr_nsrcs > in6_mcast_maxsocksrc) 1636acde2476SXin LI msfr.msfr_nsrcs = in6_mcast_maxsocksrc; 16378f002c6cSBruce M Simpson tss = NULL; 16388f002c6cSBruce M Simpson if (msfr.msfr_srcs != NULL && msfr.msfr_nsrcs > 0) { 16398f002c6cSBruce M Simpson tss = malloc(sizeof(struct sockaddr_storage) * msfr.msfr_nsrcs, 16408f002c6cSBruce M Simpson M_TEMP, M_NOWAIT | M_ZERO); 16418f002c6cSBruce M Simpson if (tss == NULL) { 16428f002c6cSBruce M Simpson INP_WUNLOCK(inp); 16438f002c6cSBruce M Simpson return (ENOBUFS); 16448f002c6cSBruce M Simpson } 16458f002c6cSBruce M Simpson } 16468f002c6cSBruce M Simpson 16478f002c6cSBruce M Simpson /* 16488f002c6cSBruce M Simpson * Count number of sources in-mode at t0. 16498f002c6cSBruce M Simpson * If buffer space exists and remains, copy out source entries. 16508f002c6cSBruce M Simpson */ 16518f002c6cSBruce M Simpson nsrcs = msfr.msfr_nsrcs; 16528f002c6cSBruce M Simpson ncsrcs = 0; 16538f002c6cSBruce M Simpson ptss = tss; 16548f002c6cSBruce M Simpson RB_FOREACH(ims, ip6_msource_tree, &imf->im6f_sources) { 16558f002c6cSBruce M Simpson lims = (struct in6_msource *)ims; 16568f002c6cSBruce M Simpson if (lims->im6sl_st[0] == MCAST_UNDEFINED || 16578f002c6cSBruce M Simpson lims->im6sl_st[0] != imf->im6f_st[0]) 16588f002c6cSBruce M Simpson continue; 16598f002c6cSBruce M Simpson ++ncsrcs; 16608f002c6cSBruce M Simpson if (tss != NULL && nsrcs > 0) { 16618f002c6cSBruce M Simpson psin = (struct sockaddr_in6 *)ptss; 16628f002c6cSBruce M Simpson psin->sin6_family = AF_INET6; 16638f002c6cSBruce M Simpson psin->sin6_len = sizeof(struct sockaddr_in6); 16648f002c6cSBruce M Simpson psin->sin6_addr = lims->im6s_addr; 16658f002c6cSBruce M Simpson psin->sin6_port = 0; 16668f002c6cSBruce M Simpson --nsrcs; 16678f002c6cSBruce M Simpson ++ptss; 16688f002c6cSBruce M Simpson } 16698f002c6cSBruce M Simpson } 16708f002c6cSBruce M Simpson 16718f002c6cSBruce M Simpson INP_WUNLOCK(inp); 16728f002c6cSBruce M Simpson 16738f002c6cSBruce M Simpson if (tss != NULL) { 16748f002c6cSBruce M Simpson error = copyout(tss, msfr.msfr_srcs, 16758f002c6cSBruce M Simpson sizeof(struct sockaddr_storage) * msfr.msfr_nsrcs); 16768f002c6cSBruce M Simpson free(tss, M_TEMP); 16778f002c6cSBruce M Simpson if (error) 16788f002c6cSBruce M Simpson return (error); 16798f002c6cSBruce M Simpson } 16808f002c6cSBruce M Simpson 16818f002c6cSBruce M Simpson msfr.msfr_nsrcs = ncsrcs; 16828f002c6cSBruce M Simpson error = sooptcopyout(sopt, &msfr, sizeof(struct __msfilterreq)); 16838f002c6cSBruce M Simpson 16848f002c6cSBruce M Simpson return (error); 16858f002c6cSBruce M Simpson } 16868f002c6cSBruce M Simpson 16878f002c6cSBruce M Simpson /* 16888f002c6cSBruce M Simpson * Return the IP multicast options in response to user getsockopt(). 16898f002c6cSBruce M Simpson */ 16908f002c6cSBruce M Simpson int 16918f002c6cSBruce M Simpson ip6_getmoptions(struct inpcb *inp, struct sockopt *sopt) 16928f002c6cSBruce M Simpson { 169333cde130SBruce M Simpson struct ip6_moptions *im6o; 169433cde130SBruce M Simpson int error; 169533cde130SBruce M Simpson u_int optval; 16968f002c6cSBruce M Simpson 16978f002c6cSBruce M Simpson INP_WLOCK(inp); 169833cde130SBruce M Simpson im6o = inp->in6p_moptions; 16998f002c6cSBruce M Simpson /* 17008f002c6cSBruce M Simpson * If socket is neither of type SOCK_RAW or SOCK_DGRAM, 17018f002c6cSBruce M Simpson * or is a divert socket, reject it. 17028f002c6cSBruce M Simpson */ 17038f002c6cSBruce M Simpson if (inp->inp_socket->so_proto->pr_protocol == IPPROTO_DIVERT || 17048f002c6cSBruce M Simpson (inp->inp_socket->so_proto->pr_type != SOCK_RAW && 17058f002c6cSBruce M Simpson inp->inp_socket->so_proto->pr_type != SOCK_DGRAM)) { 17068f002c6cSBruce M Simpson INP_WUNLOCK(inp); 17078f002c6cSBruce M Simpson return (EOPNOTSUPP); 17088f002c6cSBruce M Simpson } 17098f002c6cSBruce M Simpson 17108f002c6cSBruce M Simpson error = 0; 17118f002c6cSBruce M Simpson switch (sopt->sopt_name) { 17128f002c6cSBruce M Simpson case IPV6_MULTICAST_IF: 171333cde130SBruce M Simpson if (im6o == NULL || im6o->im6o_multicast_ifp == NULL) { 17148f002c6cSBruce M Simpson optval = 0; 17158f002c6cSBruce M Simpson } else { 171633cde130SBruce M Simpson optval = im6o->im6o_multicast_ifp->if_index; 17178f002c6cSBruce M Simpson } 17188f002c6cSBruce M Simpson INP_WUNLOCK(inp); 171933cde130SBruce M Simpson error = sooptcopyout(sopt, &optval, sizeof(u_int)); 17208f002c6cSBruce M Simpson break; 17218f002c6cSBruce M Simpson 17228f002c6cSBruce M Simpson case IPV6_MULTICAST_HOPS: 172333cde130SBruce M Simpson if (im6o == NULL) 172433cde130SBruce M Simpson optval = V_ip6_defmcasthlim; 17258f002c6cSBruce M Simpson else 172608907004SBjoern A. Zeeb optval = im6o->im6o_multicast_hlim; 17278f002c6cSBruce M Simpson INP_WUNLOCK(inp); 17288f002c6cSBruce M Simpson error = sooptcopyout(sopt, &optval, sizeof(u_int)); 17298f002c6cSBruce M Simpson break; 17308f002c6cSBruce M Simpson 17318f002c6cSBruce M Simpson case IPV6_MULTICAST_LOOP: 173233cde130SBruce M Simpson if (im6o == NULL) 173333cde130SBruce M Simpson optval = in6_mcast_loop; /* XXX VIMAGE */ 17348f002c6cSBruce M Simpson else 173533cde130SBruce M Simpson optval = im6o->im6o_multicast_loop; 17368f002c6cSBruce M Simpson INP_WUNLOCK(inp); 17378f002c6cSBruce M Simpson error = sooptcopyout(sopt, &optval, sizeof(u_int)); 17388f002c6cSBruce M Simpson break; 17398f002c6cSBruce M Simpson 17408f002c6cSBruce M Simpson case IPV6_MSFILTER: 174133cde130SBruce M Simpson if (im6o == NULL) { 17428f002c6cSBruce M Simpson error = EADDRNOTAVAIL; 17438f002c6cSBruce M Simpson INP_WUNLOCK(inp); 17448f002c6cSBruce M Simpson } else { 17458f002c6cSBruce M Simpson error = in6p_get_source_filters(inp, sopt); 17468f002c6cSBruce M Simpson } 17478f002c6cSBruce M Simpson break; 17488f002c6cSBruce M Simpson 17498f002c6cSBruce M Simpson default: 17508f002c6cSBruce M Simpson INP_WUNLOCK(inp); 17518f002c6cSBruce M Simpson error = ENOPROTOOPT; 17528f002c6cSBruce M Simpson break; 17538f002c6cSBruce M Simpson } 17548f002c6cSBruce M Simpson 17558f002c6cSBruce M Simpson INP_UNLOCK_ASSERT(inp); 17568f002c6cSBruce M Simpson 17578f002c6cSBruce M Simpson return (error); 17588f002c6cSBruce M Simpson } 17598f002c6cSBruce M Simpson 17608f002c6cSBruce M Simpson /* 176133cde130SBruce M Simpson * Look up the ifnet to use for a multicast group membership, 176233cde130SBruce M Simpson * given the address of an IPv6 group. 176333cde130SBruce M Simpson * 176433cde130SBruce M Simpson * This routine exists to support legacy IPv6 multicast applications. 176533cde130SBruce M Simpson * 176633cde130SBruce M Simpson * If inp is non-NULL, use this socket's current FIB number for any 176733cde130SBruce M Simpson * required FIB lookup. Look up the group address in the unicast FIB, 176833cde130SBruce M Simpson * and use its ifp; usually, this points to the default next-hop. 176933cde130SBruce M Simpson * If the FIB lookup fails, return NULL. 177033cde130SBruce M Simpson * 177133cde130SBruce M Simpson * FUTURE: Support multiple forwarding tables for IPv6. 177233cde130SBruce M Simpson * 177333cde130SBruce M Simpson * Returns NULL if no ifp could be found. 177433cde130SBruce M Simpson */ 177533cde130SBruce M Simpson static struct ifnet * 177681d5d46bSBjoern A. Zeeb in6p_lookup_mcast_ifp(const struct inpcb *in6p, 177733cde130SBruce M Simpson const struct sockaddr_in6 *gsin6) 177833cde130SBruce M Simpson { 17799977be4aSAlexander V. Chernikov struct nhop6_basic nh6; 17809977be4aSAlexander V. Chernikov struct in6_addr dst; 17819977be4aSAlexander V. Chernikov uint32_t scopeid; 17829977be4aSAlexander V. Chernikov uint32_t fibnum; 178333cde130SBruce M Simpson 178433cde130SBruce M Simpson KASSERT(in6p->inp_vflag & INP_IPV6, 178533cde130SBruce M Simpson ("%s: not INP_IPV6 inpcb", __func__)); 178633cde130SBruce M Simpson KASSERT(gsin6->sin6_family == AF_INET6, 178733cde130SBruce M Simpson ("%s: not AF_INET6 group", __func__)); 178833cde130SBruce M Simpson 17899977be4aSAlexander V. Chernikov in6_splitscope(&gsin6->sin6_addr, &dst, &scopeid); 17909977be4aSAlexander V. Chernikov fibnum = in6p ? in6p->inp_inc.inc_fibnum : RT_DEFAULT_FIB; 17919977be4aSAlexander V. Chernikov if (fib6_lookup_nh_basic(fibnum, &dst, scopeid, 0, 0, &nh6) != 0) 17929977be4aSAlexander V. Chernikov return (NULL); 179333cde130SBruce M Simpson 17949977be4aSAlexander V. Chernikov return (nh6.nh_ifp); 179533cde130SBruce M Simpson } 179633cde130SBruce M Simpson 179733cde130SBruce M Simpson /* 17988f002c6cSBruce M Simpson * Join an IPv6 multicast group, possibly with a source. 179933cde130SBruce M Simpson * 180033cde130SBruce M Simpson * FIXME: The KAME use of the unspecified address (::) 180133cde130SBruce M Simpson * to join *all* multicast groups is currently unsupported. 18028f002c6cSBruce M Simpson */ 18038f002c6cSBruce M Simpson static int 18048f002c6cSBruce M Simpson in6p_join_group(struct inpcb *inp, struct sockopt *sopt) 18058f002c6cSBruce M Simpson { 18068f002c6cSBruce M Simpson struct group_source_req gsr; 18078f002c6cSBruce M Simpson sockunion_t *gsa, *ssa; 18088f002c6cSBruce M Simpson struct ifnet *ifp; 18098f002c6cSBruce M Simpson struct in6_mfilter *imf; 18108f002c6cSBruce M Simpson struct ip6_moptions *imo; 18118f002c6cSBruce M Simpson struct in6_multi *inm; 18128f002c6cSBruce M Simpson struct in6_msource *lims; 18138f002c6cSBruce M Simpson size_t idx; 18148f002c6cSBruce M Simpson int error, is_new; 18158f002c6cSBruce M Simpson 18168f002c6cSBruce M Simpson ifp = NULL; 18178f002c6cSBruce M Simpson imf = NULL; 18181f81c2b6SBruce M Simpson lims = NULL; 18198f002c6cSBruce M Simpson error = 0; 18208f002c6cSBruce M Simpson is_new = 0; 18218f002c6cSBruce M Simpson 18228f002c6cSBruce M Simpson memset(&gsr, 0, sizeof(struct group_source_req)); 18238f002c6cSBruce M Simpson gsa = (sockunion_t *)&gsr.gsr_group; 18248f002c6cSBruce M Simpson gsa->ss.ss_family = AF_UNSPEC; 18258f002c6cSBruce M Simpson ssa = (sockunion_t *)&gsr.gsr_source; 18268f002c6cSBruce M Simpson ssa->ss.ss_family = AF_UNSPEC; 18278f002c6cSBruce M Simpson 182829dc7bc6SBruce M Simpson /* 182929dc7bc6SBruce M Simpson * Chew everything into struct group_source_req. 183029dc7bc6SBruce M Simpson * Overwrite the port field if present, as the sockaddr 183129dc7bc6SBruce M Simpson * being copied in may be matched with a binary comparison. 183229dc7bc6SBruce M Simpson * Ignore passed-in scope ID. 183329dc7bc6SBruce M Simpson */ 18348f002c6cSBruce M Simpson switch (sopt->sopt_name) { 18358f002c6cSBruce M Simpson case IPV6_JOIN_GROUP: { 18368f002c6cSBruce M Simpson struct ipv6_mreq mreq; 18378f002c6cSBruce M Simpson 18388f002c6cSBruce M Simpson error = sooptcopyin(sopt, &mreq, sizeof(struct ipv6_mreq), 18398f002c6cSBruce M Simpson sizeof(struct ipv6_mreq)); 18408f002c6cSBruce M Simpson if (error) 18418f002c6cSBruce M Simpson return (error); 18428f002c6cSBruce M Simpson 18438f002c6cSBruce M Simpson gsa->sin6.sin6_family = AF_INET6; 18448f002c6cSBruce M Simpson gsa->sin6.sin6_len = sizeof(struct sockaddr_in6); 18458f002c6cSBruce M Simpson gsa->sin6.sin6_addr = mreq.ipv6mr_multiaddr; 18468f002c6cSBruce M Simpson 184733cde130SBruce M Simpson if (mreq.ipv6mr_interface == 0) { 184833cde130SBruce M Simpson ifp = in6p_lookup_mcast_ifp(inp, &gsa->sin6); 184933cde130SBruce M Simpson } else { 1850010c2b81SBjoern A. Zeeb if (V_if_index < mreq.ipv6mr_interface) 185133cde130SBruce M Simpson return (EADDRNOTAVAIL); 18528f002c6cSBruce M Simpson ifp = ifnet_byindex(mreq.ipv6mr_interface); 185333cde130SBruce M Simpson } 18548f002c6cSBruce M Simpson CTR3(KTR_MLD, "%s: ipv6mr_interface = %d, ifp = %p", 18558f002c6cSBruce M Simpson __func__, mreq.ipv6mr_interface, ifp); 18568f002c6cSBruce M Simpson } break; 18578f002c6cSBruce M Simpson 18588f002c6cSBruce M Simpson case MCAST_JOIN_GROUP: 18598f002c6cSBruce M Simpson case MCAST_JOIN_SOURCE_GROUP: 18608f002c6cSBruce M Simpson if (sopt->sopt_name == MCAST_JOIN_GROUP) { 18618f002c6cSBruce M Simpson error = sooptcopyin(sopt, &gsr, 18628f002c6cSBruce M Simpson sizeof(struct group_req), 18638f002c6cSBruce M Simpson sizeof(struct group_req)); 18648f002c6cSBruce M Simpson } else if (sopt->sopt_name == MCAST_JOIN_SOURCE_GROUP) { 18658f002c6cSBruce M Simpson error = sooptcopyin(sopt, &gsr, 18668f002c6cSBruce M Simpson sizeof(struct group_source_req), 18678f002c6cSBruce M Simpson sizeof(struct group_source_req)); 18688f002c6cSBruce M Simpson } 18698f002c6cSBruce M Simpson if (error) 18708f002c6cSBruce M Simpson return (error); 18718f002c6cSBruce M Simpson 18728f002c6cSBruce M Simpson if (gsa->sin6.sin6_family != AF_INET6 || 18738f002c6cSBruce M Simpson gsa->sin6.sin6_len != sizeof(struct sockaddr_in6)) 18748f002c6cSBruce M Simpson return (EINVAL); 18758f002c6cSBruce M Simpson 18768f002c6cSBruce M Simpson if (sopt->sopt_name == MCAST_JOIN_SOURCE_GROUP) { 18778f002c6cSBruce M Simpson if (ssa->sin6.sin6_family != AF_INET6 || 18788f002c6cSBruce M Simpson ssa->sin6.sin6_len != sizeof(struct sockaddr_in6)) 18798f002c6cSBruce M Simpson return (EINVAL); 188029dc7bc6SBruce M Simpson if (IN6_IS_ADDR_MULTICAST(&ssa->sin6.sin6_addr)) 188129dc7bc6SBruce M Simpson return (EINVAL); 188229dc7bc6SBruce M Simpson /* 188329dc7bc6SBruce M Simpson * TODO: Validate embedded scope ID in source 188429dc7bc6SBruce M Simpson * list entry against passed-in ifp, if and only 188529dc7bc6SBruce M Simpson * if source list filter entry is iface or node local. 188629dc7bc6SBruce M Simpson */ 188729dc7bc6SBruce M Simpson in6_clearscope(&ssa->sin6.sin6_addr); 18888f002c6cSBruce M Simpson ssa->sin6.sin6_port = 0; 188929dc7bc6SBruce M Simpson ssa->sin6.sin6_scope_id = 0; 18908f002c6cSBruce M Simpson } 18918f002c6cSBruce M Simpson 18928f002c6cSBruce M Simpson if (gsr.gsr_interface == 0 || V_if_index < gsr.gsr_interface) 18938f002c6cSBruce M Simpson return (EADDRNOTAVAIL); 18948f002c6cSBruce M Simpson ifp = ifnet_byindex(gsr.gsr_interface); 18958f002c6cSBruce M Simpson break; 18968f002c6cSBruce M Simpson 18978f002c6cSBruce M Simpson default: 18988f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: unknown sopt_name %d", 18998f002c6cSBruce M Simpson __func__, sopt->sopt_name); 19008f002c6cSBruce M Simpson return (EOPNOTSUPP); 19018f002c6cSBruce M Simpson break; 19028f002c6cSBruce M Simpson } 19038f002c6cSBruce M Simpson 19048f002c6cSBruce M Simpson if (!IN6_IS_ADDR_MULTICAST(&gsa->sin6.sin6_addr)) 19058f002c6cSBruce M Simpson return (EINVAL); 19068f002c6cSBruce M Simpson 19078f002c6cSBruce M Simpson if (ifp == NULL || (ifp->if_flags & IFF_MULTICAST) == 0) 19088f002c6cSBruce M Simpson return (EADDRNOTAVAIL); 19098f002c6cSBruce M Simpson 191029dc7bc6SBruce M Simpson gsa->sin6.sin6_port = 0; 191129dc7bc6SBruce M Simpson gsa->sin6.sin6_scope_id = 0; 191229dc7bc6SBruce M Simpson 191333cde130SBruce M Simpson /* 191429dc7bc6SBruce M Simpson * Always set the scope zone ID on memberships created from userland. 191529dc7bc6SBruce M Simpson * Use the passed-in ifp to do this. 191629dc7bc6SBruce M Simpson * XXX The in6_setscope() return value is meaningless. 191729dc7bc6SBruce M Simpson * XXX SCOPE6_LOCK() is taken by in6_setscope(). 191833cde130SBruce M Simpson */ 191929dc7bc6SBruce M Simpson (void)in6_setscope(&gsa->sin6.sin6_addr, ifp, NULL); 192033cde130SBruce M Simpson 19218f002c6cSBruce M Simpson imo = in6p_findmoptions(inp); 19228f002c6cSBruce M Simpson idx = im6o_match_group(imo, ifp, &gsa->sa); 19238f002c6cSBruce M Simpson if (idx == -1) { 19248f002c6cSBruce M Simpson is_new = 1; 19258f002c6cSBruce M Simpson } else { 19268f002c6cSBruce M Simpson inm = imo->im6o_membership[idx]; 19278f002c6cSBruce M Simpson imf = &imo->im6o_mfilters[idx]; 19281ee6b058SBruce M Simpson if (ssa->ss.ss_family != AF_UNSPEC) { 19291ee6b058SBruce M Simpson /* 19301ee6b058SBruce M Simpson * MCAST_JOIN_SOURCE_GROUP on an exclusive membership 19311ee6b058SBruce M Simpson * is an error. On an existing inclusive membership, 19321ee6b058SBruce M Simpson * it just adds the source to the filter list. 19331ee6b058SBruce M Simpson */ 19341ee6b058SBruce M Simpson if (imf->im6f_st[1] != MCAST_INCLUDE) { 19358f002c6cSBruce M Simpson error = EINVAL; 19368f002c6cSBruce M Simpson goto out_in6p_locked; 19378f002c6cSBruce M Simpson } 19381f81c2b6SBruce M Simpson /* 19391f81c2b6SBruce M Simpson * Throw out duplicates. 19401f81c2b6SBruce M Simpson * 19411f81c2b6SBruce M Simpson * XXX FIXME: This makes a naive assumption that 19421f81c2b6SBruce M Simpson * even if entries exist for *ssa in this imf, 19431f81c2b6SBruce M Simpson * they will be rejected as dupes, even if they 19441f81c2b6SBruce M Simpson * are not valid in the current mode (in-mode). 19451f81c2b6SBruce M Simpson * 19461f81c2b6SBruce M Simpson * in6_msource is transactioned just as for anything 19471f81c2b6SBruce M Simpson * else in SSM -- but note naive use of in6m_graft() 19481f81c2b6SBruce M Simpson * below for allocating new filter entries. 19491f81c2b6SBruce M Simpson * 19501f81c2b6SBruce M Simpson * This is only an issue if someone mixes the 19511f81c2b6SBruce M Simpson * full-state SSM API with the delta-based API, 19521f81c2b6SBruce M Simpson * which is discouraged in the relevant RFCs. 19531f81c2b6SBruce M Simpson */ 19548f002c6cSBruce M Simpson lims = im6o_match_source(imo, idx, &ssa->sa); 19551f81c2b6SBruce M Simpson if (lims != NULL /*&& 19561f81c2b6SBruce M Simpson lims->im6sl_st[1] == MCAST_INCLUDE*/) { 19578f002c6cSBruce M Simpson error = EADDRNOTAVAIL; 19588f002c6cSBruce M Simpson goto out_in6p_locked; 19598f002c6cSBruce M Simpson } 19601ee6b058SBruce M Simpson } else { 19611ee6b058SBruce M Simpson /* 1962604a60d1SBruce M Simpson * MCAST_JOIN_GROUP alone, on any existing membership, 1963604a60d1SBruce M Simpson * is rejected, to stop the same inpcb tying up 1964604a60d1SBruce M Simpson * multiple refs to the in_multi. 1965604a60d1SBruce M Simpson * On an existing inclusive membership, this is also 1966604a60d1SBruce M Simpson * an error; if you want to change filter mode, 1967604a60d1SBruce M Simpson * you must use the userland API setsourcefilter(). 1968604a60d1SBruce M Simpson * XXX We don't reject this for imf in UNDEFINED 1969604a60d1SBruce M Simpson * state at t1, because allocation of a filter 1970604a60d1SBruce M Simpson * is atomic with allocation of a membership. 19711ee6b058SBruce M Simpson */ 19721ee6b058SBruce M Simpson error = EINVAL; 19731ee6b058SBruce M Simpson goto out_in6p_locked; 19741ee6b058SBruce M Simpson } 19751ee6b058SBruce M Simpson } 19768f002c6cSBruce M Simpson 19778f002c6cSBruce M Simpson /* 19788f002c6cSBruce M Simpson * Begin state merge transaction at socket layer. 19798f002c6cSBruce M Simpson */ 19808f002c6cSBruce M Simpson INP_WLOCK_ASSERT(inp); 19818f002c6cSBruce M Simpson 19828f002c6cSBruce M Simpson if (is_new) { 19838f002c6cSBruce M Simpson if (imo->im6o_num_memberships == imo->im6o_max_memberships) { 19848f002c6cSBruce M Simpson error = im6o_grow(imo); 19858f002c6cSBruce M Simpson if (error) 19868f002c6cSBruce M Simpson goto out_in6p_locked; 19878f002c6cSBruce M Simpson } 19888f002c6cSBruce M Simpson /* 19898f002c6cSBruce M Simpson * Allocate the new slot upfront so we can deal with 19908f002c6cSBruce M Simpson * grafting the new source filter in same code path 19918f002c6cSBruce M Simpson * as for join-source on existing membership. 19928f002c6cSBruce M Simpson */ 19938f002c6cSBruce M Simpson idx = imo->im6o_num_memberships; 19948f002c6cSBruce M Simpson imo->im6o_membership[idx] = NULL; 19958f002c6cSBruce M Simpson imo->im6o_num_memberships++; 19968f002c6cSBruce M Simpson KASSERT(imo->im6o_mfilters != NULL, 19978f002c6cSBruce M Simpson ("%s: im6f_mfilters vector was not allocated", __func__)); 19988f002c6cSBruce M Simpson imf = &imo->im6o_mfilters[idx]; 19998f002c6cSBruce M Simpson KASSERT(RB_EMPTY(&imf->im6f_sources), 20008f002c6cSBruce M Simpson ("%s: im6f_sources not empty", __func__)); 20018f002c6cSBruce M Simpson } 20028f002c6cSBruce M Simpson 20038f002c6cSBruce M Simpson /* 20048f002c6cSBruce M Simpson * Graft new source into filter list for this inpcb's 20058f002c6cSBruce M Simpson * membership of the group. The in6_multi may not have 20061ee6b058SBruce M Simpson * been allocated yet if this is a new membership, however, 20071ee6b058SBruce M Simpson * the in_mfilter slot will be allocated and must be initialized. 2008604a60d1SBruce M Simpson * 2009604a60d1SBruce M Simpson * Note: Grafting of exclusive mode filters doesn't happen 2010604a60d1SBruce M Simpson * in this path. 20111f81c2b6SBruce M Simpson * XXX: Should check for non-NULL lims (node exists but may 20121f81c2b6SBruce M Simpson * not be in-mode) for interop with full-state API. 20138f002c6cSBruce M Simpson */ 20148f002c6cSBruce M Simpson if (ssa->ss.ss_family != AF_UNSPEC) { 20158f002c6cSBruce M Simpson /* Membership starts in IN mode */ 20168f002c6cSBruce M Simpson if (is_new) { 20178f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: new join w/source", __func__); 20188f002c6cSBruce M Simpson im6f_init(imf, MCAST_UNDEFINED, MCAST_INCLUDE); 20198f002c6cSBruce M Simpson } else { 20208f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: %s source", __func__, "allow"); 20218f002c6cSBruce M Simpson } 20228f002c6cSBruce M Simpson lims = im6f_graft(imf, MCAST_INCLUDE, &ssa->sin6); 20238f002c6cSBruce M Simpson if (lims == NULL) { 20248f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: merge imf state failed", 20258f002c6cSBruce M Simpson __func__); 20268f002c6cSBruce M Simpson error = ENOMEM; 20278f002c6cSBruce M Simpson goto out_im6o_free; 20288f002c6cSBruce M Simpson } 20291ee6b058SBruce M Simpson } else { 20301ee6b058SBruce M Simpson /* No address specified; Membership starts in EX mode */ 20311ee6b058SBruce M Simpson if (is_new) { 20321ee6b058SBruce M Simpson CTR1(KTR_MLD, "%s: new join w/o source", __func__); 20331ee6b058SBruce M Simpson im6f_init(imf, MCAST_UNDEFINED, MCAST_EXCLUDE); 20341ee6b058SBruce M Simpson } 20358f002c6cSBruce M Simpson } 20368f002c6cSBruce M Simpson 20378f002c6cSBruce M Simpson /* 20388f002c6cSBruce M Simpson * Begin state merge transaction at MLD layer. 20398f002c6cSBruce M Simpson */ 20408f002c6cSBruce M Simpson IN6_MULTI_LOCK(); 20418f002c6cSBruce M Simpson 20428f002c6cSBruce M Simpson if (is_new) { 20438f002c6cSBruce M Simpson error = in6_mc_join_locked(ifp, &gsa->sin6.sin6_addr, imf, 20448f002c6cSBruce M Simpson &inm, 0); 20454fd91336SAndrey V. Elsukov if (error) { 20464fd91336SAndrey V. Elsukov IN6_MULTI_UNLOCK(); 20478f002c6cSBruce M Simpson goto out_im6o_free; 20484fd91336SAndrey V. Elsukov } 20498f002c6cSBruce M Simpson imo->im6o_membership[idx] = inm; 20508f002c6cSBruce M Simpson } else { 20518f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: merge inm state", __func__); 20528f002c6cSBruce M Simpson error = in6m_merge(inm, imf); 20534fd91336SAndrey V. Elsukov if (error) 20548f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: failed to merge inm state", 20558f002c6cSBruce M Simpson __func__); 20564fd91336SAndrey V. Elsukov else { 20578f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: doing mld downcall", __func__); 20588f002c6cSBruce M Simpson error = mld_change_state(inm, 0); 20594fd91336SAndrey V. Elsukov if (error) 20608f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: failed mld downcall", 20618f002c6cSBruce M Simpson __func__); 20628f002c6cSBruce M Simpson } 20638f002c6cSBruce M Simpson } 20648f002c6cSBruce M Simpson 20658f002c6cSBruce M Simpson IN6_MULTI_UNLOCK(); 20668f002c6cSBruce M Simpson INP_WLOCK_ASSERT(inp); 20678f002c6cSBruce M Simpson if (error) { 20688f002c6cSBruce M Simpson im6f_rollback(imf); 20698f002c6cSBruce M Simpson if (is_new) 20708f002c6cSBruce M Simpson im6f_purge(imf); 20718f002c6cSBruce M Simpson else 20728f002c6cSBruce M Simpson im6f_reap(imf); 20738f002c6cSBruce M Simpson } else { 20748f002c6cSBruce M Simpson im6f_commit(imf); 20758f002c6cSBruce M Simpson } 20768f002c6cSBruce M Simpson 20778f002c6cSBruce M Simpson out_im6o_free: 20788f002c6cSBruce M Simpson if (error && is_new) { 20798f002c6cSBruce M Simpson imo->im6o_membership[idx] = NULL; 20808f002c6cSBruce M Simpson --imo->im6o_num_memberships; 20818f002c6cSBruce M Simpson } 20828f002c6cSBruce M Simpson 20838f002c6cSBruce M Simpson out_in6p_locked: 20848f002c6cSBruce M Simpson INP_WUNLOCK(inp); 20858f002c6cSBruce M Simpson return (error); 20868f002c6cSBruce M Simpson } 20878f002c6cSBruce M Simpson 20888f002c6cSBruce M Simpson /* 20898f002c6cSBruce M Simpson * Leave an IPv6 multicast group on an inpcb, possibly with a source. 20908f002c6cSBruce M Simpson */ 20918f002c6cSBruce M Simpson static int 20928f002c6cSBruce M Simpson in6p_leave_group(struct inpcb *inp, struct sockopt *sopt) 20938f002c6cSBruce M Simpson { 209429dc7bc6SBruce M Simpson struct ipv6_mreq mreq; 20958f002c6cSBruce M Simpson struct group_source_req gsr; 20968f002c6cSBruce M Simpson sockunion_t *gsa, *ssa; 20978f002c6cSBruce M Simpson struct ifnet *ifp; 20988f002c6cSBruce M Simpson struct in6_mfilter *imf; 20998f002c6cSBruce M Simpson struct ip6_moptions *imo; 21008f002c6cSBruce M Simpson struct in6_msource *ims; 21018f002c6cSBruce M Simpson struct in6_multi *inm; 210229dc7bc6SBruce M Simpson uint32_t ifindex; 21038f002c6cSBruce M Simpson size_t idx; 21048f002c6cSBruce M Simpson int error, is_final; 21058f002c6cSBruce M Simpson #ifdef KTR 21068f002c6cSBruce M Simpson char ip6tbuf[INET6_ADDRSTRLEN]; 21078f002c6cSBruce M Simpson #endif 21088f002c6cSBruce M Simpson 21098f002c6cSBruce M Simpson ifp = NULL; 211029dc7bc6SBruce M Simpson ifindex = 0; 21118f002c6cSBruce M Simpson error = 0; 21128f002c6cSBruce M Simpson is_final = 1; 21138f002c6cSBruce M Simpson 21148f002c6cSBruce M Simpson memset(&gsr, 0, sizeof(struct group_source_req)); 21158f002c6cSBruce M Simpson gsa = (sockunion_t *)&gsr.gsr_group; 21168f002c6cSBruce M Simpson gsa->ss.ss_family = AF_UNSPEC; 21178f002c6cSBruce M Simpson ssa = (sockunion_t *)&gsr.gsr_source; 21188f002c6cSBruce M Simpson ssa->ss.ss_family = AF_UNSPEC; 21198f002c6cSBruce M Simpson 212029dc7bc6SBruce M Simpson /* 212129dc7bc6SBruce M Simpson * Chew everything passed in up into a struct group_source_req 212229dc7bc6SBruce M Simpson * as that is easier to process. 212329dc7bc6SBruce M Simpson * Note: Any embedded scope ID in the multicast group passed 212429dc7bc6SBruce M Simpson * in by userland is ignored, the interface index is the recommended 212529dc7bc6SBruce M Simpson * mechanism to specify an interface; see below. 212629dc7bc6SBruce M Simpson */ 21278f002c6cSBruce M Simpson switch (sopt->sopt_name) { 212829dc7bc6SBruce M Simpson case IPV6_LEAVE_GROUP: 21298f002c6cSBruce M Simpson error = sooptcopyin(sopt, &mreq, sizeof(struct ipv6_mreq), 21308f002c6cSBruce M Simpson sizeof(struct ipv6_mreq)); 21318f002c6cSBruce M Simpson if (error) 21328f002c6cSBruce M Simpson return (error); 21338f002c6cSBruce M Simpson gsa->sin6.sin6_family = AF_INET6; 21348f002c6cSBruce M Simpson gsa->sin6.sin6_len = sizeof(struct sockaddr_in6); 21358f002c6cSBruce M Simpson gsa->sin6.sin6_addr = mreq.ipv6mr_multiaddr; 213629dc7bc6SBruce M Simpson gsa->sin6.sin6_port = 0; 213729dc7bc6SBruce M Simpson gsa->sin6.sin6_scope_id = 0; 213829dc7bc6SBruce M Simpson ifindex = mreq.ipv6mr_interface; 213929dc7bc6SBruce M Simpson break; 21408f002c6cSBruce M Simpson 21418f002c6cSBruce M Simpson case MCAST_LEAVE_GROUP: 21428f002c6cSBruce M Simpson case MCAST_LEAVE_SOURCE_GROUP: 21438f002c6cSBruce M Simpson if (sopt->sopt_name == MCAST_LEAVE_GROUP) { 21448f002c6cSBruce M Simpson error = sooptcopyin(sopt, &gsr, 21458f002c6cSBruce M Simpson sizeof(struct group_req), 21468f002c6cSBruce M Simpson sizeof(struct group_req)); 21478f002c6cSBruce M Simpson } else if (sopt->sopt_name == MCAST_LEAVE_SOURCE_GROUP) { 21488f002c6cSBruce M Simpson error = sooptcopyin(sopt, &gsr, 21498f002c6cSBruce M Simpson sizeof(struct group_source_req), 21508f002c6cSBruce M Simpson sizeof(struct group_source_req)); 21518f002c6cSBruce M Simpson } 21528f002c6cSBruce M Simpson if (error) 21538f002c6cSBruce M Simpson return (error); 21548f002c6cSBruce M Simpson 21558f002c6cSBruce M Simpson if (gsa->sin6.sin6_family != AF_INET6 || 21568f002c6cSBruce M Simpson gsa->sin6.sin6_len != sizeof(struct sockaddr_in6)) 21578f002c6cSBruce M Simpson return (EINVAL); 21588f002c6cSBruce M Simpson if (sopt->sopt_name == MCAST_LEAVE_SOURCE_GROUP) { 21598f002c6cSBruce M Simpson if (ssa->sin6.sin6_family != AF_INET6 || 21608f002c6cSBruce M Simpson ssa->sin6.sin6_len != sizeof(struct sockaddr_in6)) 21618f002c6cSBruce M Simpson return (EINVAL); 216229dc7bc6SBruce M Simpson if (IN6_IS_ADDR_MULTICAST(&ssa->sin6.sin6_addr)) 216329dc7bc6SBruce M Simpson return (EINVAL); 216429dc7bc6SBruce M Simpson /* 216529dc7bc6SBruce M Simpson * TODO: Validate embedded scope ID in source 216629dc7bc6SBruce M Simpson * list entry against passed-in ifp, if and only 216729dc7bc6SBruce M Simpson * if source list filter entry is iface or node local. 216829dc7bc6SBruce M Simpson */ 216929dc7bc6SBruce M Simpson in6_clearscope(&ssa->sin6.sin6_addr); 21708f002c6cSBruce M Simpson } 217129dc7bc6SBruce M Simpson gsa->sin6.sin6_port = 0; 217229dc7bc6SBruce M Simpson gsa->sin6.sin6_scope_id = 0; 217329dc7bc6SBruce M Simpson ifindex = gsr.gsr_interface; 21748f002c6cSBruce M Simpson break; 21758f002c6cSBruce M Simpson 21768f002c6cSBruce M Simpson default: 21778f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: unknown sopt_name %d", 21788f002c6cSBruce M Simpson __func__, sopt->sopt_name); 21798f002c6cSBruce M Simpson return (EOPNOTSUPP); 21808f002c6cSBruce M Simpson break; 21818f002c6cSBruce M Simpson } 21828f002c6cSBruce M Simpson 21838f002c6cSBruce M Simpson if (!IN6_IS_ADDR_MULTICAST(&gsa->sin6.sin6_addr)) 21848f002c6cSBruce M Simpson return (EINVAL); 21858f002c6cSBruce M Simpson 218633cde130SBruce M Simpson /* 218729dc7bc6SBruce M Simpson * Validate interface index if provided. If no interface index 218829dc7bc6SBruce M Simpson * was provided separately, attempt to look the membership up 218929dc7bc6SBruce M Simpson * from the default scope as a last resort to disambiguate 219029dc7bc6SBruce M Simpson * the membership we are being asked to leave. 219129dc7bc6SBruce M Simpson * XXX SCOPE6 lock potentially taken here. 219233cde130SBruce M Simpson */ 219329dc7bc6SBruce M Simpson if (ifindex != 0) { 2194010c2b81SBjoern A. Zeeb if (V_if_index < ifindex) 219529dc7bc6SBruce M Simpson return (EADDRNOTAVAIL); 219629dc7bc6SBruce M Simpson ifp = ifnet_byindex(ifindex); 219729dc7bc6SBruce M Simpson if (ifp == NULL) 219829dc7bc6SBruce M Simpson return (EADDRNOTAVAIL); 219929dc7bc6SBruce M Simpson (void)in6_setscope(&gsa->sin6.sin6_addr, ifp, NULL); 220029dc7bc6SBruce M Simpson } else { 220129dc7bc6SBruce M Simpson error = sa6_embedscope(&gsa->sin6, V_ip6_use_defzone); 220229dc7bc6SBruce M Simpson if (error) 220329dc7bc6SBruce M Simpson return (EADDRNOTAVAIL); 220429dc7bc6SBruce M Simpson /* 2205b36c89e5SBruce M Simpson * Some badly behaved applications don't pass an ifindex 2206b36c89e5SBruce M Simpson * or a scope ID, which is an API violation. In this case, 2207b36c89e5SBruce M Simpson * perform a lookup as per a v6 join. 2208b36c89e5SBruce M Simpson * 220929dc7bc6SBruce M Simpson * XXX For now, stomp on zone ID for the corner case. 221029dc7bc6SBruce M Simpson * This is not the 'KAME way', but we need to see the ifp 221129dc7bc6SBruce M Simpson * directly until such time as this implementation is 221229dc7bc6SBruce M Simpson * refactored, assuming the scope IDs are the way to go. 221329dc7bc6SBruce M Simpson */ 221429dc7bc6SBruce M Simpson ifindex = ntohs(gsa->sin6.sin6_addr.s6_addr16[1]); 2215b36c89e5SBruce M Simpson if (ifindex == 0) { 2216b36c89e5SBruce M Simpson CTR2(KTR_MLD, "%s: warning: no ifindex, looking up " 2217b36c89e5SBruce M Simpson "ifp for group %s.", __func__, 2218b36c89e5SBruce M Simpson ip6_sprintf(ip6tbuf, &gsa->sin6.sin6_addr)); 2219b36c89e5SBruce M Simpson ifp = in6p_lookup_mcast_ifp(inp, &gsa->sin6); 2220b36c89e5SBruce M Simpson } else { 222129dc7bc6SBruce M Simpson ifp = ifnet_byindex(ifindex); 2222b36c89e5SBruce M Simpson } 222329dc7bc6SBruce M Simpson if (ifp == NULL) 222429dc7bc6SBruce M Simpson return (EADDRNOTAVAIL); 222529dc7bc6SBruce M Simpson } 222629dc7bc6SBruce M Simpson 222729dc7bc6SBruce M Simpson CTR2(KTR_MLD, "%s: ifp = %p", __func__, ifp); 222829dc7bc6SBruce M Simpson KASSERT(ifp != NULL, ("%s: ifp did not resolve", __func__)); 222933cde130SBruce M Simpson 22308f002c6cSBruce M Simpson /* 22318f002c6cSBruce M Simpson * Find the membership in the membership array. 22328f002c6cSBruce M Simpson */ 22338f002c6cSBruce M Simpson imo = in6p_findmoptions(inp); 22348f002c6cSBruce M Simpson idx = im6o_match_group(imo, ifp, &gsa->sa); 22358f002c6cSBruce M Simpson if (idx == -1) { 22368f002c6cSBruce M Simpson error = EADDRNOTAVAIL; 22378f002c6cSBruce M Simpson goto out_in6p_locked; 22388f002c6cSBruce M Simpson } 22398f002c6cSBruce M Simpson inm = imo->im6o_membership[idx]; 22408f002c6cSBruce M Simpson imf = &imo->im6o_mfilters[idx]; 22418f002c6cSBruce M Simpson 22428f002c6cSBruce M Simpson if (ssa->ss.ss_family != AF_UNSPEC) 22438f002c6cSBruce M Simpson is_final = 0; 22448f002c6cSBruce M Simpson 22458f002c6cSBruce M Simpson /* 22468f002c6cSBruce M Simpson * Begin state merge transaction at socket layer. 22478f002c6cSBruce M Simpson */ 22488f002c6cSBruce M Simpson INP_WLOCK_ASSERT(inp); 22498f002c6cSBruce M Simpson 22508f002c6cSBruce M Simpson /* 22518f002c6cSBruce M Simpson * If we were instructed only to leave a given source, do so. 22528f002c6cSBruce M Simpson * MCAST_LEAVE_SOURCE_GROUP is only valid for inclusive memberships. 22538f002c6cSBruce M Simpson */ 22548f002c6cSBruce M Simpson if (is_final) { 22558f002c6cSBruce M Simpson im6f_leave(imf); 22568f002c6cSBruce M Simpson } else { 22578f002c6cSBruce M Simpson if (imf->im6f_st[0] == MCAST_EXCLUDE) { 22588f002c6cSBruce M Simpson error = EADDRNOTAVAIL; 22598f002c6cSBruce M Simpson goto out_in6p_locked; 22608f002c6cSBruce M Simpson } 22618f002c6cSBruce M Simpson ims = im6o_match_source(imo, idx, &ssa->sa); 22628f002c6cSBruce M Simpson if (ims == NULL) { 22638f002c6cSBruce M Simpson CTR3(KTR_MLD, "%s: source %p %spresent", __func__, 22648f002c6cSBruce M Simpson ip6_sprintf(ip6tbuf, &ssa->sin6.sin6_addr), 22658f002c6cSBruce M Simpson "not "); 22668f002c6cSBruce M Simpson error = EADDRNOTAVAIL; 22678f002c6cSBruce M Simpson goto out_in6p_locked; 22688f002c6cSBruce M Simpson } 22698f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: %s source", __func__, "block"); 22708f002c6cSBruce M Simpson error = im6f_prune(imf, &ssa->sin6); 22718f002c6cSBruce M Simpson if (error) { 22728f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: merge imf state failed", 22738f002c6cSBruce M Simpson __func__); 22748f002c6cSBruce M Simpson goto out_in6p_locked; 22758f002c6cSBruce M Simpson } 22768f002c6cSBruce M Simpson } 22778f002c6cSBruce M Simpson 22788f002c6cSBruce M Simpson /* 22798f002c6cSBruce M Simpson * Begin state merge transaction at MLD layer. 22808f002c6cSBruce M Simpson */ 22818f002c6cSBruce M Simpson IN6_MULTI_LOCK(); 22828f002c6cSBruce M Simpson 22838f002c6cSBruce M Simpson if (is_final) { 22848f002c6cSBruce M Simpson /* 22858f002c6cSBruce M Simpson * Give up the multicast address record to which 22868f002c6cSBruce M Simpson * the membership points. 22878f002c6cSBruce M Simpson */ 22888f002c6cSBruce M Simpson (void)in6_mc_leave_locked(inm, imf); 22898f002c6cSBruce M Simpson } else { 22908f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: merge inm state", __func__); 22918f002c6cSBruce M Simpson error = in6m_merge(inm, imf); 22924fd91336SAndrey V. Elsukov if (error) 22938f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: failed to merge inm state", 22948f002c6cSBruce M Simpson __func__); 22954fd91336SAndrey V. Elsukov else { 22968f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: doing mld downcall", __func__); 22978f002c6cSBruce M Simpson error = mld_change_state(inm, 0); 22984fd91336SAndrey V. Elsukov if (error) 22998f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: failed mld downcall", 23008f002c6cSBruce M Simpson __func__); 23018f002c6cSBruce M Simpson } 23028f002c6cSBruce M Simpson } 23038f002c6cSBruce M Simpson 23048f002c6cSBruce M Simpson IN6_MULTI_UNLOCK(); 23058f002c6cSBruce M Simpson 23068f002c6cSBruce M Simpson if (error) 23078f002c6cSBruce M Simpson im6f_rollback(imf); 23088f002c6cSBruce M Simpson else 23098f002c6cSBruce M Simpson im6f_commit(imf); 23108f002c6cSBruce M Simpson 23118f002c6cSBruce M Simpson im6f_reap(imf); 23128f002c6cSBruce M Simpson 23138f002c6cSBruce M Simpson if (is_final) { 23148f002c6cSBruce M Simpson /* Remove the gap in the membership array. */ 231557a9feeaSBruce M Simpson for (++idx; idx < imo->im6o_num_memberships; ++idx) { 23168f002c6cSBruce M Simpson imo->im6o_membership[idx-1] = imo->im6o_membership[idx]; 231757a9feeaSBruce M Simpson imo->im6o_mfilters[idx-1] = imo->im6o_mfilters[idx]; 231857a9feeaSBruce M Simpson } 23198f002c6cSBruce M Simpson imo->im6o_num_memberships--; 23208f002c6cSBruce M Simpson } 23218f002c6cSBruce M Simpson 23228f002c6cSBruce M Simpson out_in6p_locked: 23238f002c6cSBruce M Simpson INP_WUNLOCK(inp); 23248f002c6cSBruce M Simpson return (error); 23258f002c6cSBruce M Simpson } 23268f002c6cSBruce M Simpson 23278f002c6cSBruce M Simpson /* 23288f002c6cSBruce M Simpson * Select the interface for transmitting IPv6 multicast datagrams. 23298f002c6cSBruce M Simpson * 23308f002c6cSBruce M Simpson * Either an instance of struct in6_addr or an instance of struct ipv6_mreqn 23318f002c6cSBruce M Simpson * may be passed to this socket option. An address of in6addr_any or an 23328f002c6cSBruce M Simpson * interface index of 0 is used to remove a previous selection. 23338f002c6cSBruce M Simpson * When no interface is selected, one is chosen for every send. 23348f002c6cSBruce M Simpson */ 23358f002c6cSBruce M Simpson static int 23368f002c6cSBruce M Simpson in6p_set_multicast_if(struct inpcb *inp, struct sockopt *sopt) 23378f002c6cSBruce M Simpson { 23388f002c6cSBruce M Simpson struct ifnet *ifp; 23398f002c6cSBruce M Simpson struct ip6_moptions *imo; 23408f002c6cSBruce M Simpson u_int ifindex; 23418f002c6cSBruce M Simpson int error; 23428f002c6cSBruce M Simpson 23438f002c6cSBruce M Simpson if (sopt->sopt_valsize != sizeof(u_int)) 23448f002c6cSBruce M Simpson return (EINVAL); 23458f002c6cSBruce M Simpson 23468f002c6cSBruce M Simpson error = sooptcopyin(sopt, &ifindex, sizeof(u_int), sizeof(u_int)); 23478f002c6cSBruce M Simpson if (error) 23488f002c6cSBruce M Simpson return (error); 2349010c2b81SBjoern A. Zeeb if (V_if_index < ifindex) 23508f002c6cSBruce M Simpson return (EINVAL); 2351e2956804SAndrey V. Elsukov if (ifindex == 0) 2352e2956804SAndrey V. Elsukov ifp = NULL; 2353e2956804SAndrey V. Elsukov else { 23548f002c6cSBruce M Simpson ifp = ifnet_byindex(ifindex); 2355e2956804SAndrey V. Elsukov if (ifp == NULL) 2356e2956804SAndrey V. Elsukov return (EINVAL); 2357e2956804SAndrey V. Elsukov if ((ifp->if_flags & IFF_MULTICAST) == 0) 23588f002c6cSBruce M Simpson return (EADDRNOTAVAIL); 2359e2956804SAndrey V. Elsukov } 23608f002c6cSBruce M Simpson imo = in6p_findmoptions(inp); 23618f002c6cSBruce M Simpson imo->im6o_multicast_ifp = ifp; 23628f002c6cSBruce M Simpson INP_WUNLOCK(inp); 23638f002c6cSBruce M Simpson 23648f002c6cSBruce M Simpson return (0); 23658f002c6cSBruce M Simpson } 23668f002c6cSBruce M Simpson 23678f002c6cSBruce M Simpson /* 23688f002c6cSBruce M Simpson * Atomically set source filters on a socket for an IPv6 multicast group. 23698f002c6cSBruce M Simpson * 23708f002c6cSBruce M Simpson * SMPng: NOTE: Potentially calls malloc(M_WAITOK) with Giant held. 23718f002c6cSBruce M Simpson */ 23728f002c6cSBruce M Simpson static int 23738f002c6cSBruce M Simpson in6p_set_source_filters(struct inpcb *inp, struct sockopt *sopt) 23748f002c6cSBruce M Simpson { 23758f002c6cSBruce M Simpson struct __msfilterreq msfr; 23768f002c6cSBruce M Simpson sockunion_t *gsa; 23778f002c6cSBruce M Simpson struct ifnet *ifp; 23788f002c6cSBruce M Simpson struct in6_mfilter *imf; 23798f002c6cSBruce M Simpson struct ip6_moptions *imo; 23808f002c6cSBruce M Simpson struct in6_multi *inm; 23818f002c6cSBruce M Simpson size_t idx; 23828f002c6cSBruce M Simpson int error; 23838f002c6cSBruce M Simpson 23848f002c6cSBruce M Simpson error = sooptcopyin(sopt, &msfr, sizeof(struct __msfilterreq), 23858f002c6cSBruce M Simpson sizeof(struct __msfilterreq)); 23868f002c6cSBruce M Simpson if (error) 23878f002c6cSBruce M Simpson return (error); 23888f002c6cSBruce M Simpson 23890dc5893eSBruce M Simpson if (msfr.msfr_nsrcs > in6_mcast_maxsocksrc) 23900dc5893eSBruce M Simpson return (ENOBUFS); 23910dc5893eSBruce M Simpson 23920dc5893eSBruce M Simpson if (msfr.msfr_fmode != MCAST_EXCLUDE && 23930dc5893eSBruce M Simpson msfr.msfr_fmode != MCAST_INCLUDE) 23948f002c6cSBruce M Simpson return (EINVAL); 23958f002c6cSBruce M Simpson 23968f002c6cSBruce M Simpson if (msfr.msfr_group.ss_family != AF_INET6 || 23978f002c6cSBruce M Simpson msfr.msfr_group.ss_len != sizeof(struct sockaddr_in6)) 23988f002c6cSBruce M Simpson return (EINVAL); 23998f002c6cSBruce M Simpson 24008f002c6cSBruce M Simpson gsa = (sockunion_t *)&msfr.msfr_group; 24018f002c6cSBruce M Simpson if (!IN6_IS_ADDR_MULTICAST(&gsa->sin6.sin6_addr)) 24028f002c6cSBruce M Simpson return (EINVAL); 24038f002c6cSBruce M Simpson 24048f002c6cSBruce M Simpson gsa->sin6.sin6_port = 0; /* ignore port */ 24058f002c6cSBruce M Simpson 24068f002c6cSBruce M Simpson if (msfr.msfr_ifindex == 0 || V_if_index < msfr.msfr_ifindex) 24078f002c6cSBruce M Simpson return (EADDRNOTAVAIL); 24088f002c6cSBruce M Simpson ifp = ifnet_byindex(msfr.msfr_ifindex); 24098f002c6cSBruce M Simpson if (ifp == NULL) 24108f002c6cSBruce M Simpson return (EADDRNOTAVAIL); 241129dc7bc6SBruce M Simpson (void)in6_setscope(&gsa->sin6.sin6_addr, ifp, NULL); 24128f002c6cSBruce M Simpson 24138f002c6cSBruce M Simpson /* 24148f002c6cSBruce M Simpson * Take the INP write lock. 24158f002c6cSBruce M Simpson * Check if this socket is a member of this group. 24168f002c6cSBruce M Simpson */ 24178f002c6cSBruce M Simpson imo = in6p_findmoptions(inp); 24188f002c6cSBruce M Simpson idx = im6o_match_group(imo, ifp, &gsa->sa); 24198f002c6cSBruce M Simpson if (idx == -1 || imo->im6o_mfilters == NULL) { 24208f002c6cSBruce M Simpson error = EADDRNOTAVAIL; 24218f002c6cSBruce M Simpson goto out_in6p_locked; 24228f002c6cSBruce M Simpson } 24238f002c6cSBruce M Simpson inm = imo->im6o_membership[idx]; 24248f002c6cSBruce M Simpson imf = &imo->im6o_mfilters[idx]; 24258f002c6cSBruce M Simpson 24268f002c6cSBruce M Simpson /* 24278f002c6cSBruce M Simpson * Begin state merge transaction at socket layer. 24288f002c6cSBruce M Simpson */ 24298f002c6cSBruce M Simpson INP_WLOCK_ASSERT(inp); 24308f002c6cSBruce M Simpson 24318f002c6cSBruce M Simpson imf->im6f_st[1] = msfr.msfr_fmode; 24328f002c6cSBruce M Simpson 24338f002c6cSBruce M Simpson /* 24348f002c6cSBruce M Simpson * Apply any new source filters, if present. 24358f002c6cSBruce M Simpson * Make a copy of the user-space source vector so 24368f002c6cSBruce M Simpson * that we may copy them with a single copyin. This 24378f002c6cSBruce M Simpson * allows us to deal with page faults up-front. 24388f002c6cSBruce M Simpson */ 24398f002c6cSBruce M Simpson if (msfr.msfr_nsrcs > 0) { 24408f002c6cSBruce M Simpson struct in6_msource *lims; 24418f002c6cSBruce M Simpson struct sockaddr_in6 *psin; 24428f002c6cSBruce M Simpson struct sockaddr_storage *kss, *pkss; 24438f002c6cSBruce M Simpson int i; 24448f002c6cSBruce M Simpson 24458f002c6cSBruce M Simpson INP_WUNLOCK(inp); 24468f002c6cSBruce M Simpson 24478f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: loading %lu source list entries", 24488f002c6cSBruce M Simpson __func__, (unsigned long)msfr.msfr_nsrcs); 24498f002c6cSBruce M Simpson kss = malloc(sizeof(struct sockaddr_storage) * msfr.msfr_nsrcs, 24508f002c6cSBruce M Simpson M_TEMP, M_WAITOK); 24518f002c6cSBruce M Simpson error = copyin(msfr.msfr_srcs, kss, 24528f002c6cSBruce M Simpson sizeof(struct sockaddr_storage) * msfr.msfr_nsrcs); 24538f002c6cSBruce M Simpson if (error) { 24548f002c6cSBruce M Simpson free(kss, M_TEMP); 24558f002c6cSBruce M Simpson return (error); 24568f002c6cSBruce M Simpson } 24578f002c6cSBruce M Simpson 24588f002c6cSBruce M Simpson INP_WLOCK(inp); 24598f002c6cSBruce M Simpson 24608f002c6cSBruce M Simpson /* 24618f002c6cSBruce M Simpson * Mark all source filters as UNDEFINED at t1. 24628f002c6cSBruce M Simpson * Restore new group filter mode, as im6f_leave() 24638f002c6cSBruce M Simpson * will set it to INCLUDE. 24648f002c6cSBruce M Simpson */ 24658f002c6cSBruce M Simpson im6f_leave(imf); 24668f002c6cSBruce M Simpson imf->im6f_st[1] = msfr.msfr_fmode; 24678f002c6cSBruce M Simpson 24688f002c6cSBruce M Simpson /* 24698f002c6cSBruce M Simpson * Update socket layer filters at t1, lazy-allocating 24708f002c6cSBruce M Simpson * new entries. This saves a bunch of memory at the 24718f002c6cSBruce M Simpson * cost of one RB_FIND() per source entry; duplicate 24728f002c6cSBruce M Simpson * entries in the msfr_nsrcs vector are ignored. 24738f002c6cSBruce M Simpson * If we encounter an error, rollback transaction. 24748f002c6cSBruce M Simpson * 24758f002c6cSBruce M Simpson * XXX This too could be replaced with a set-symmetric 24768f002c6cSBruce M Simpson * difference like loop to avoid walking from root 24778f002c6cSBruce M Simpson * every time, as the key space is common. 24788f002c6cSBruce M Simpson */ 24798f002c6cSBruce M Simpson for (i = 0, pkss = kss; i < msfr.msfr_nsrcs; i++, pkss++) { 24808f002c6cSBruce M Simpson psin = (struct sockaddr_in6 *)pkss; 24818f002c6cSBruce M Simpson if (psin->sin6_family != AF_INET6) { 24828f002c6cSBruce M Simpson error = EAFNOSUPPORT; 24838f002c6cSBruce M Simpson break; 24848f002c6cSBruce M Simpson } 24858f002c6cSBruce M Simpson if (psin->sin6_len != sizeof(struct sockaddr_in6)) { 24868f002c6cSBruce M Simpson error = EINVAL; 24878f002c6cSBruce M Simpson break; 24888f002c6cSBruce M Simpson } 248929dc7bc6SBruce M Simpson if (IN6_IS_ADDR_MULTICAST(&psin->sin6_addr)) { 249029dc7bc6SBruce M Simpson error = EINVAL; 249129dc7bc6SBruce M Simpson break; 249229dc7bc6SBruce M Simpson } 249329dc7bc6SBruce M Simpson /* 249429dc7bc6SBruce M Simpson * TODO: Validate embedded scope ID in source 249529dc7bc6SBruce M Simpson * list entry against passed-in ifp, if and only 249629dc7bc6SBruce M Simpson * if source list filter entry is iface or node local. 249729dc7bc6SBruce M Simpson */ 249829dc7bc6SBruce M Simpson in6_clearscope(&psin->sin6_addr); 24998f002c6cSBruce M Simpson error = im6f_get_source(imf, psin, &lims); 25008f002c6cSBruce M Simpson if (error) 25018f002c6cSBruce M Simpson break; 25028f002c6cSBruce M Simpson lims->im6sl_st[1] = imf->im6f_st[1]; 25038f002c6cSBruce M Simpson } 25048f002c6cSBruce M Simpson free(kss, M_TEMP); 25058f002c6cSBruce M Simpson } 25068f002c6cSBruce M Simpson 25078f002c6cSBruce M Simpson if (error) 25088f002c6cSBruce M Simpson goto out_im6f_rollback; 25098f002c6cSBruce M Simpson 25108f002c6cSBruce M Simpson INP_WLOCK_ASSERT(inp); 25118f002c6cSBruce M Simpson IN6_MULTI_LOCK(); 25128f002c6cSBruce M Simpson 25138f002c6cSBruce M Simpson /* 25148f002c6cSBruce M Simpson * Begin state merge transaction at MLD layer. 25158f002c6cSBruce M Simpson */ 25168f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: merge inm state", __func__); 25178f002c6cSBruce M Simpson error = in6m_merge(inm, imf); 25184fd91336SAndrey V. Elsukov if (error) 25198f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: failed to merge inm state", __func__); 25204fd91336SAndrey V. Elsukov else { 25218f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: doing mld downcall", __func__); 25228f002c6cSBruce M Simpson error = mld_change_state(inm, 0); 25238f002c6cSBruce M Simpson if (error) 25248f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: failed mld downcall", __func__); 25254fd91336SAndrey V. Elsukov } 25268f002c6cSBruce M Simpson 25278f002c6cSBruce M Simpson IN6_MULTI_UNLOCK(); 25288f002c6cSBruce M Simpson 25298f002c6cSBruce M Simpson out_im6f_rollback: 25308f002c6cSBruce M Simpson if (error) 25318f002c6cSBruce M Simpson im6f_rollback(imf); 25328f002c6cSBruce M Simpson else 25338f002c6cSBruce M Simpson im6f_commit(imf); 25348f002c6cSBruce M Simpson 25358f002c6cSBruce M Simpson im6f_reap(imf); 25368f002c6cSBruce M Simpson 25378f002c6cSBruce M Simpson out_in6p_locked: 25388f002c6cSBruce M Simpson INP_WUNLOCK(inp); 25398f002c6cSBruce M Simpson return (error); 25408f002c6cSBruce M Simpson } 25418f002c6cSBruce M Simpson 25428f002c6cSBruce M Simpson /* 25438f002c6cSBruce M Simpson * Set the IP multicast options in response to user setsockopt(). 25448f002c6cSBruce M Simpson * 25458f002c6cSBruce M Simpson * Many of the socket options handled in this function duplicate the 25468f002c6cSBruce M Simpson * functionality of socket options in the regular unicast API. However, 25478f002c6cSBruce M Simpson * it is not possible to merge the duplicate code, because the idempotence 25488f002c6cSBruce M Simpson * of the IPv6 multicast part of the BSD Sockets API must be preserved; 25498f002c6cSBruce M Simpson * the effects of these options must be treated as separate and distinct. 25508f002c6cSBruce M Simpson * 25518f002c6cSBruce M Simpson * SMPng: XXX: Unlocked read of inp_socket believed OK. 25528f002c6cSBruce M Simpson */ 25538f002c6cSBruce M Simpson int 25548f002c6cSBruce M Simpson ip6_setmoptions(struct inpcb *inp, struct sockopt *sopt) 25558f002c6cSBruce M Simpson { 255633cde130SBruce M Simpson struct ip6_moptions *im6o; 25578f002c6cSBruce M Simpson int error; 25588f002c6cSBruce M Simpson 25598f002c6cSBruce M Simpson error = 0; 25608f002c6cSBruce M Simpson 25618f002c6cSBruce M Simpson /* 25628f002c6cSBruce M Simpson * If socket is neither of type SOCK_RAW or SOCK_DGRAM, 25638f002c6cSBruce M Simpson * or is a divert socket, reject it. 25648f002c6cSBruce M Simpson */ 25658f002c6cSBruce M Simpson if (inp->inp_socket->so_proto->pr_protocol == IPPROTO_DIVERT || 25668f002c6cSBruce M Simpson (inp->inp_socket->so_proto->pr_type != SOCK_RAW && 25678f002c6cSBruce M Simpson inp->inp_socket->so_proto->pr_type != SOCK_DGRAM)) 25688f002c6cSBruce M Simpson return (EOPNOTSUPP); 25698f002c6cSBruce M Simpson 25708f002c6cSBruce M Simpson switch (sopt->sopt_name) { 25718f002c6cSBruce M Simpson case IPV6_MULTICAST_IF: 25728f002c6cSBruce M Simpson error = in6p_set_multicast_if(inp, sopt); 25738f002c6cSBruce M Simpson break; 25748f002c6cSBruce M Simpson 25758f002c6cSBruce M Simpson case IPV6_MULTICAST_HOPS: { 25768f002c6cSBruce M Simpson int hlim; 25778f002c6cSBruce M Simpson 25788f002c6cSBruce M Simpson if (sopt->sopt_valsize != sizeof(int)) { 25798f002c6cSBruce M Simpson error = EINVAL; 25808f002c6cSBruce M Simpson break; 25818f002c6cSBruce M Simpson } 25828f002c6cSBruce M Simpson error = sooptcopyin(sopt, &hlim, sizeof(hlim), sizeof(int)); 25838f002c6cSBruce M Simpson if (error) 25848f002c6cSBruce M Simpson break; 25858f002c6cSBruce M Simpson if (hlim < -1 || hlim > 255) { 25868f002c6cSBruce M Simpson error = EINVAL; 25878f002c6cSBruce M Simpson break; 258833cde130SBruce M Simpson } else if (hlim == -1) { 258933cde130SBruce M Simpson hlim = V_ip6_defmcasthlim; 25908f002c6cSBruce M Simpson } 259133cde130SBruce M Simpson im6o = in6p_findmoptions(inp); 259233cde130SBruce M Simpson im6o->im6o_multicast_hlim = hlim; 25938f002c6cSBruce M Simpson INP_WUNLOCK(inp); 25948f002c6cSBruce M Simpson break; 25958f002c6cSBruce M Simpson } 25968f002c6cSBruce M Simpson 25978f002c6cSBruce M Simpson case IPV6_MULTICAST_LOOP: { 25988f002c6cSBruce M Simpson u_int loop; 25998f002c6cSBruce M Simpson 26008f002c6cSBruce M Simpson /* 26018f002c6cSBruce M Simpson * Set the loopback flag for outgoing multicast packets. 260233cde130SBruce M Simpson * Must be zero or one. 26038f002c6cSBruce M Simpson */ 26048f002c6cSBruce M Simpson if (sopt->sopt_valsize != sizeof(u_int)) { 26058f002c6cSBruce M Simpson error = EINVAL; 26068f002c6cSBruce M Simpson break; 26078f002c6cSBruce M Simpson } 26088f002c6cSBruce M Simpson error = sooptcopyin(sopt, &loop, sizeof(u_int), sizeof(u_int)); 26098f002c6cSBruce M Simpson if (error) 26108f002c6cSBruce M Simpson break; 261133cde130SBruce M Simpson if (loop > 1) { 261233cde130SBruce M Simpson error = EINVAL; 261333cde130SBruce M Simpson break; 261433cde130SBruce M Simpson } 261533cde130SBruce M Simpson im6o = in6p_findmoptions(inp); 261633cde130SBruce M Simpson im6o->im6o_multicast_loop = loop; 26178f002c6cSBruce M Simpson INP_WUNLOCK(inp); 26188f002c6cSBruce M Simpson break; 26198f002c6cSBruce M Simpson } 26208f002c6cSBruce M Simpson 26218f002c6cSBruce M Simpson case IPV6_JOIN_GROUP: 26228f002c6cSBruce M Simpson case MCAST_JOIN_GROUP: 26238f002c6cSBruce M Simpson case MCAST_JOIN_SOURCE_GROUP: 26248f002c6cSBruce M Simpson error = in6p_join_group(inp, sopt); 26258f002c6cSBruce M Simpson break; 26268f002c6cSBruce M Simpson 26278f002c6cSBruce M Simpson case IPV6_LEAVE_GROUP: 26288f002c6cSBruce M Simpson case MCAST_LEAVE_GROUP: 26298f002c6cSBruce M Simpson case MCAST_LEAVE_SOURCE_GROUP: 26308f002c6cSBruce M Simpson error = in6p_leave_group(inp, sopt); 26318f002c6cSBruce M Simpson break; 26328f002c6cSBruce M Simpson 26338f002c6cSBruce M Simpson case MCAST_BLOCK_SOURCE: 26348f002c6cSBruce M Simpson case MCAST_UNBLOCK_SOURCE: 26358f002c6cSBruce M Simpson error = in6p_block_unblock_source(inp, sopt); 26368f002c6cSBruce M Simpson break; 26378f002c6cSBruce M Simpson 26388f002c6cSBruce M Simpson case IPV6_MSFILTER: 26398f002c6cSBruce M Simpson error = in6p_set_source_filters(inp, sopt); 26408f002c6cSBruce M Simpson break; 26418f002c6cSBruce M Simpson 26428f002c6cSBruce M Simpson default: 26438f002c6cSBruce M Simpson error = EOPNOTSUPP; 26448f002c6cSBruce M Simpson break; 26458f002c6cSBruce M Simpson } 26468f002c6cSBruce M Simpson 26478f002c6cSBruce M Simpson INP_UNLOCK_ASSERT(inp); 26488f002c6cSBruce M Simpson 26498f002c6cSBruce M Simpson return (error); 26508f002c6cSBruce M Simpson } 26518f002c6cSBruce M Simpson 26528f002c6cSBruce M Simpson /* 26538f002c6cSBruce M Simpson * Expose MLD's multicast filter mode and source list(s) to userland, 26548f002c6cSBruce M Simpson * keyed by (ifindex, group). 26558f002c6cSBruce M Simpson * The filter mode is written out as a uint32_t, followed by 26568f002c6cSBruce M Simpson * 0..n of struct in6_addr. 26578f002c6cSBruce M Simpson * For use by ifmcstat(8). 26588f002c6cSBruce M Simpson * SMPng: NOTE: unlocked read of ifindex space. 26598f002c6cSBruce M Simpson */ 26608f002c6cSBruce M Simpson static int 26618f002c6cSBruce M Simpson sysctl_ip6_mcast_filters(SYSCTL_HANDLER_ARGS) 26628f002c6cSBruce M Simpson { 266329dc7bc6SBruce M Simpson struct in6_addr mcaddr; 26648f002c6cSBruce M Simpson struct in6_addr src; 26658f002c6cSBruce M Simpson struct ifnet *ifp; 26668f002c6cSBruce M Simpson struct ifmultiaddr *ifma; 26678f002c6cSBruce M Simpson struct in6_multi *inm; 26688f002c6cSBruce M Simpson struct ip6_msource *ims; 26698f002c6cSBruce M Simpson int *name; 26708f002c6cSBruce M Simpson int retval; 26718f002c6cSBruce M Simpson u_int namelen; 26728f002c6cSBruce M Simpson uint32_t fmode, ifindex; 26738f002c6cSBruce M Simpson #ifdef KTR 26748f002c6cSBruce M Simpson char ip6tbuf[INET6_ADDRSTRLEN]; 26758f002c6cSBruce M Simpson #endif 26768f002c6cSBruce M Simpson 26778f002c6cSBruce M Simpson name = (int *)arg1; 26788f002c6cSBruce M Simpson namelen = arg2; 26798f002c6cSBruce M Simpson 26808f002c6cSBruce M Simpson if (req->newptr != NULL) 26818f002c6cSBruce M Simpson return (EPERM); 26828f002c6cSBruce M Simpson 26838f002c6cSBruce M Simpson /* int: ifindex + 4 * 32 bits of IPv6 address */ 26848f002c6cSBruce M Simpson if (namelen != 5) 26858f002c6cSBruce M Simpson return (EINVAL); 26868f002c6cSBruce M Simpson 26878f002c6cSBruce M Simpson ifindex = name[0]; 26888f002c6cSBruce M Simpson if (ifindex <= 0 || ifindex > V_if_index) { 26898f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: ifindex %u out of range", 26908f002c6cSBruce M Simpson __func__, ifindex); 26918f002c6cSBruce M Simpson return (ENOENT); 26928f002c6cSBruce M Simpson } 26938f002c6cSBruce M Simpson 269429dc7bc6SBruce M Simpson memcpy(&mcaddr, &name[1], sizeof(struct in6_addr)); 269529dc7bc6SBruce M Simpson if (!IN6_IS_ADDR_MULTICAST(&mcaddr)) { 26968f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: group %s is not multicast", 269729dc7bc6SBruce M Simpson __func__, ip6_sprintf(ip6tbuf, &mcaddr)); 26988f002c6cSBruce M Simpson return (EINVAL); 26998f002c6cSBruce M Simpson } 27008f002c6cSBruce M Simpson 27018f002c6cSBruce M Simpson ifp = ifnet_byindex(ifindex); 27028f002c6cSBruce M Simpson if (ifp == NULL) { 27038f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: no ifp for ifindex %u", 27048f002c6cSBruce M Simpson __func__, ifindex); 27058f002c6cSBruce M Simpson return (ENOENT); 27068f002c6cSBruce M Simpson } 270729dc7bc6SBruce M Simpson /* 270829dc7bc6SBruce M Simpson * Internal MLD lookups require that scope/zone ID is set. 270929dc7bc6SBruce M Simpson */ 271029dc7bc6SBruce M Simpson (void)in6_setscope(&mcaddr, ifp, NULL); 27118f002c6cSBruce M Simpson 27128f002c6cSBruce M Simpson retval = sysctl_wire_old_buffer(req, 27138f002c6cSBruce M Simpson sizeof(uint32_t) + (in6_mcast_maxgrpsrc * sizeof(struct in6_addr))); 27148f002c6cSBruce M Simpson if (retval) 27158f002c6cSBruce M Simpson return (retval); 27168f002c6cSBruce M Simpson 27178f002c6cSBruce M Simpson IN6_MULTI_LOCK(); 27188f002c6cSBruce M Simpson 2719137f91e8SJohn Baldwin IF_ADDR_RLOCK(ifp); 27208f002c6cSBruce M Simpson TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 27218f002c6cSBruce M Simpson if (ifma->ifma_addr->sa_family != AF_INET6 || 27228f002c6cSBruce M Simpson ifma->ifma_protospec == NULL) 27238f002c6cSBruce M Simpson continue; 27248f002c6cSBruce M Simpson inm = (struct in6_multi *)ifma->ifma_protospec; 272529dc7bc6SBruce M Simpson if (!IN6_ARE_ADDR_EQUAL(&inm->in6m_addr, &mcaddr)) 27268f002c6cSBruce M Simpson continue; 27278f002c6cSBruce M Simpson fmode = inm->in6m_st[1].iss_fmode; 27288f002c6cSBruce M Simpson retval = SYSCTL_OUT(req, &fmode, sizeof(uint32_t)); 27298f002c6cSBruce M Simpson if (retval != 0) 27308f002c6cSBruce M Simpson break; 27318f002c6cSBruce M Simpson RB_FOREACH(ims, ip6_msource_tree, &inm->in6m_srcs) { 27328f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: visit node %p", __func__, ims); 27338f002c6cSBruce M Simpson /* 27348f002c6cSBruce M Simpson * Only copy-out sources which are in-mode. 27358f002c6cSBruce M Simpson */ 27368f002c6cSBruce M Simpson if (fmode != im6s_get_mode(inm, ims, 1)) { 27378f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: skip non-in-mode", 27388f002c6cSBruce M Simpson __func__); 27398f002c6cSBruce M Simpson continue; 27408f002c6cSBruce M Simpson } 27418f002c6cSBruce M Simpson src = ims->im6s_addr; 27428f002c6cSBruce M Simpson retval = SYSCTL_OUT(req, &src, 27438f002c6cSBruce M Simpson sizeof(struct in6_addr)); 27448f002c6cSBruce M Simpson if (retval != 0) 27458f002c6cSBruce M Simpson break; 27468f002c6cSBruce M Simpson } 27478f002c6cSBruce M Simpson } 2748137f91e8SJohn Baldwin IF_ADDR_RUNLOCK(ifp); 27498f002c6cSBruce M Simpson 27508f002c6cSBruce M Simpson IN6_MULTI_UNLOCK(); 27518f002c6cSBruce M Simpson 27528f002c6cSBruce M Simpson return (retval); 27538f002c6cSBruce M Simpson } 27548f002c6cSBruce M Simpson 27558f002c6cSBruce M Simpson #ifdef KTR 27568f002c6cSBruce M Simpson 27578f002c6cSBruce M Simpson static const char *in6m_modestrs[] = { "un", "in", "ex" }; 27588f002c6cSBruce M Simpson 27598f002c6cSBruce M Simpson static const char * 27608f002c6cSBruce M Simpson in6m_mode_str(const int mode) 27618f002c6cSBruce M Simpson { 27628f002c6cSBruce M Simpson 27638f002c6cSBruce M Simpson if (mode >= MCAST_UNDEFINED && mode <= MCAST_EXCLUDE) 27648f002c6cSBruce M Simpson return (in6m_modestrs[mode]); 27658f002c6cSBruce M Simpson return ("??"); 27668f002c6cSBruce M Simpson } 27678f002c6cSBruce M Simpson 27688f002c6cSBruce M Simpson static const char *in6m_statestrs[] = { 27698f002c6cSBruce M Simpson "not-member", 27708f002c6cSBruce M Simpson "silent", 27718f002c6cSBruce M Simpson "idle", 27728f002c6cSBruce M Simpson "lazy", 27738f002c6cSBruce M Simpson "sleeping", 27748f002c6cSBruce M Simpson "awakening", 27758f002c6cSBruce M Simpson "query-pending", 27768f002c6cSBruce M Simpson "sg-query-pending", 27778f002c6cSBruce M Simpson "leaving" 27788f002c6cSBruce M Simpson }; 27798f002c6cSBruce M Simpson 27808f002c6cSBruce M Simpson static const char * 27818f002c6cSBruce M Simpson in6m_state_str(const int state) 27828f002c6cSBruce M Simpson { 27838f002c6cSBruce M Simpson 27848f002c6cSBruce M Simpson if (state >= MLD_NOT_MEMBER && state <= MLD_LEAVING_MEMBER) 27858f002c6cSBruce M Simpson return (in6m_statestrs[state]); 27868f002c6cSBruce M Simpson return ("??"); 27878f002c6cSBruce M Simpson } 27888f002c6cSBruce M Simpson 27898f002c6cSBruce M Simpson /* 27908f002c6cSBruce M Simpson * Dump an in6_multi structure to the console. 27918f002c6cSBruce M Simpson */ 27928f002c6cSBruce M Simpson void 27938f002c6cSBruce M Simpson in6m_print(const struct in6_multi *inm) 27948f002c6cSBruce M Simpson { 27958f002c6cSBruce M Simpson int t; 27968f002c6cSBruce M Simpson char ip6tbuf[INET6_ADDRSTRLEN]; 27978f002c6cSBruce M Simpson 27985b65b8bcSAlexander Kabaev if ((ktr_mask & KTR_MLD) == 0) 27998f002c6cSBruce M Simpson return; 28008f002c6cSBruce M Simpson 28018f002c6cSBruce M Simpson printf("%s: --- begin in6m %p ---\n", __func__, inm); 28028f002c6cSBruce M Simpson printf("addr %s ifp %p(%s) ifma %p\n", 28038f002c6cSBruce M Simpson ip6_sprintf(ip6tbuf, &inm->in6m_addr), 28048f002c6cSBruce M Simpson inm->in6m_ifp, 2805e74966f6SAndrey V. Elsukov if_name(inm->in6m_ifp), 28068f002c6cSBruce M Simpson inm->in6m_ifma); 28078f002c6cSBruce M Simpson printf("timer %u state %s refcount %u scq.len %u\n", 28088f002c6cSBruce M Simpson inm->in6m_timer, 28098f002c6cSBruce M Simpson in6m_state_str(inm->in6m_state), 28108f002c6cSBruce M Simpson inm->in6m_refcount, 2811a99c84d4SGleb Smirnoff mbufq_len(&inm->in6m_scq)); 28128f002c6cSBruce M Simpson printf("mli %p nsrc %lu sctimer %u scrv %u\n", 28138f002c6cSBruce M Simpson inm->in6m_mli, 28148f002c6cSBruce M Simpson inm->in6m_nsrc, 28158f002c6cSBruce M Simpson inm->in6m_sctimer, 28168f002c6cSBruce M Simpson inm->in6m_scrv); 28178f002c6cSBruce M Simpson for (t = 0; t < 2; t++) { 28188f002c6cSBruce M Simpson printf("t%d: fmode %s asm %u ex %u in %u rec %u\n", t, 28198f002c6cSBruce M Simpson in6m_mode_str(inm->in6m_st[t].iss_fmode), 28208f002c6cSBruce M Simpson inm->in6m_st[t].iss_asm, 28218f002c6cSBruce M Simpson inm->in6m_st[t].iss_ex, 28228f002c6cSBruce M Simpson inm->in6m_st[t].iss_in, 28238f002c6cSBruce M Simpson inm->in6m_st[t].iss_rec); 28248f002c6cSBruce M Simpson } 28258f002c6cSBruce M Simpson printf("%s: --- end in6m %p ---\n", __func__, inm); 28268f002c6cSBruce M Simpson } 28278f002c6cSBruce M Simpson 28288f002c6cSBruce M Simpson #else /* !KTR */ 28298f002c6cSBruce M Simpson 28308f002c6cSBruce M Simpson void 28318f002c6cSBruce M Simpson in6m_print(const struct in6_multi *inm) 28328f002c6cSBruce M Simpson { 28338f002c6cSBruce M Simpson 28348f002c6cSBruce M Simpson } 28358f002c6cSBruce M Simpson 28368f002c6cSBruce M Simpson #endif /* KTR */ 2837