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> 44f3e1324bSStephen Hurd #include <sys/gtaskqueue.h> 458f002c6cSBruce M Simpson #include <sys/kernel.h> 468f002c6cSBruce M Simpson #include <sys/malloc.h> 478f002c6cSBruce M Simpson #include <sys/mbuf.h> 488f002c6cSBruce M Simpson #include <sys/protosw.h> 498f002c6cSBruce M Simpson #include <sys/socket.h> 508f002c6cSBruce M Simpson #include <sys/socketvar.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 62f3e1324bSStephen Hurd 638f002c6cSBruce M Simpson #include <netinet/in.h> 64f3e1324bSStephen Hurd #include <netinet/udp.h> 658f002c6cSBruce M Simpson #include <netinet/in_var.h> 66f3e1324bSStephen Hurd #include <netinet/ip_var.h> 67f3e1324bSStephen Hurd #include <netinet/udp_var.h> 689977be4aSAlexander V. Chernikov #include <netinet6/in6_fib.h> 698f002c6cSBruce M Simpson #include <netinet6/in6_var.h> 708f002c6cSBruce M Simpson #include <netinet/ip6.h> 718f002c6cSBruce M Simpson #include <netinet/icmp6.h> 728f002c6cSBruce M Simpson #include <netinet6/ip6_var.h> 738f002c6cSBruce M Simpson #include <netinet/in_pcb.h> 748f002c6cSBruce M Simpson #include <netinet/tcp_var.h> 758f002c6cSBruce M Simpson #include <netinet6/nd6.h> 768f002c6cSBruce M Simpson #include <netinet6/mld6_var.h> 77eddfbb76SRobert Watson #include <netinet6/scope6_var.h> 788f002c6cSBruce M Simpson 798f002c6cSBruce M Simpson #ifndef KTR_MLD 808f002c6cSBruce M Simpson #define KTR_MLD KTR_INET6 818f002c6cSBruce M Simpson #endif 828f002c6cSBruce M Simpson 838f002c6cSBruce M Simpson #ifndef __SOCKUNION_DECLARED 848f002c6cSBruce M Simpson union sockunion { 858f002c6cSBruce M Simpson struct sockaddr_storage ss; 868f002c6cSBruce M Simpson struct sockaddr sa; 878f002c6cSBruce M Simpson struct sockaddr_dl sdl; 888f002c6cSBruce M Simpson struct sockaddr_in6 sin6; 898f002c6cSBruce M Simpson }; 908f002c6cSBruce M Simpson typedef union sockunion sockunion_t; 918f002c6cSBruce M Simpson #define __SOCKUNION_DECLARED 928f002c6cSBruce M Simpson #endif /* __SOCKUNION_DECLARED */ 938f002c6cSBruce M Simpson 948f002c6cSBruce M Simpson static MALLOC_DEFINE(M_IN6MFILTER, "in6_mfilter", 958f002c6cSBruce M Simpson "IPv6 multicast PCB-layer source filter"); 96f3e1324bSStephen Hurd MALLOC_DEFINE(M_IP6MADDR, "in6_multi", "IPv6 multicast group"); 978f002c6cSBruce M Simpson static MALLOC_DEFINE(M_IP6MOPTS, "ip6_moptions", "IPv6 multicast options"); 988f002c6cSBruce M Simpson static MALLOC_DEFINE(M_IP6MSOURCE, "ip6_msource", 998f002c6cSBruce M Simpson "IPv6 multicast MLD-layer source filter"); 1008f002c6cSBruce M Simpson 1018f002c6cSBruce M Simpson RB_GENERATE(ip6_msource_tree, ip6_msource, im6s_link, ip6_msource_cmp); 1028f002c6cSBruce M Simpson 1038f002c6cSBruce M Simpson /* 1048f002c6cSBruce M Simpson * Locking: 1058f002c6cSBruce M Simpson * - Lock order is: Giant, INP_WLOCK, IN6_MULTI_LOCK, MLD_LOCK, IF_ADDR_LOCK. 1068f002c6cSBruce M Simpson * - The IF_ADDR_LOCK is implicitly taken by in6m_lookup() earlier, however 1078f002c6cSBruce M Simpson * it can be taken by code in net/if.c also. 1088f002c6cSBruce M Simpson * - ip6_moptions and in6_mfilter are covered by the INP_WLOCK. 1098f002c6cSBruce M Simpson * 1108f002c6cSBruce M Simpson * struct in6_multi is covered by IN6_MULTI_LOCK. There isn't strictly 1118f002c6cSBruce M Simpson * any need for in6_multi itself to be virtualized -- it is bound to an ifp 1128f002c6cSBruce M Simpson * anyway no matter what happens. 1138f002c6cSBruce M Simpson */ 114f3e1324bSStephen Hurd struct mtx in6_multi_list_mtx; 115f3e1324bSStephen Hurd MTX_SYSINIT(in6_multi_mtx, &in6_multi_list_mtx, "in6_multi_list_mtx", MTX_DEF); 116f3e1324bSStephen Hurd 117f3e1324bSStephen Hurd struct mtx in6_multi_free_mtx; 118f3e1324bSStephen Hurd MTX_SYSINIT(in6_multi_free_mtx, &in6_multi_free_mtx, "in6_multi_free_mtx", MTX_DEF); 119f3e1324bSStephen Hurd 120f3e1324bSStephen Hurd struct sx in6_multi_sx; 121f3e1324bSStephen Hurd SX_SYSINIT(in6_multi_sx, &in6_multi_sx, "in6_multi_sx"); 122f3e1324bSStephen Hurd 123f3e1324bSStephen Hurd 1248f002c6cSBruce M Simpson 1258f002c6cSBruce M Simpson static void im6f_commit(struct in6_mfilter *); 1268f002c6cSBruce M Simpson static int im6f_get_source(struct in6_mfilter *imf, 1278f002c6cSBruce M Simpson const struct sockaddr_in6 *psin, 1288f002c6cSBruce M Simpson struct in6_msource **); 1298f002c6cSBruce M Simpson static struct in6_msource * 1308f002c6cSBruce M Simpson im6f_graft(struct in6_mfilter *, const uint8_t, 1318f002c6cSBruce M Simpson const struct sockaddr_in6 *); 1328f002c6cSBruce M Simpson static void im6f_leave(struct in6_mfilter *); 1338f002c6cSBruce M Simpson static int im6f_prune(struct in6_mfilter *, const struct sockaddr_in6 *); 1348f002c6cSBruce M Simpson static void im6f_purge(struct in6_mfilter *); 1358f002c6cSBruce M Simpson static void im6f_rollback(struct in6_mfilter *); 1368f002c6cSBruce M Simpson static void im6f_reap(struct in6_mfilter *); 1378f002c6cSBruce M Simpson static int im6o_grow(struct ip6_moptions *); 1388f002c6cSBruce M Simpson static size_t im6o_match_group(const struct ip6_moptions *, 1398f002c6cSBruce M Simpson const struct ifnet *, const struct sockaddr *); 1408f002c6cSBruce M Simpson static struct in6_msource * 1418f002c6cSBruce M Simpson im6o_match_source(const struct ip6_moptions *, const size_t, 1428f002c6cSBruce M Simpson const struct sockaddr *); 1438f002c6cSBruce M Simpson static void im6s_merge(struct ip6_msource *ims, 1448f002c6cSBruce M Simpson const struct in6_msource *lims, const int rollback); 145f3e1324bSStephen Hurd static int in6_getmulti(struct ifnet *, const struct in6_addr *, 1468f002c6cSBruce M Simpson struct in6_multi **); 1478f002c6cSBruce M Simpson static int in6m_get_source(struct in6_multi *inm, 1488f002c6cSBruce M Simpson const struct in6_addr *addr, const int noalloc, 1498f002c6cSBruce M Simpson struct ip6_msource **pims); 1506c5a340eSDimitry Andric #ifdef KTR 1518f002c6cSBruce M Simpson static int in6m_is_ifp_detached(const struct in6_multi *); 1526c5a340eSDimitry Andric #endif 1538f002c6cSBruce M Simpson static int in6m_merge(struct in6_multi *, /*const*/ struct in6_mfilter *); 1548f002c6cSBruce M Simpson static void in6m_purge(struct in6_multi *); 1558f002c6cSBruce M Simpson static void in6m_reap(struct in6_multi *); 1568f002c6cSBruce M Simpson static struct ip6_moptions * 1578f002c6cSBruce M Simpson in6p_findmoptions(struct inpcb *); 1588f002c6cSBruce M Simpson static int in6p_get_source_filters(struct inpcb *, struct sockopt *); 1598f002c6cSBruce M Simpson static int in6p_join_group(struct inpcb *, struct sockopt *); 1608f002c6cSBruce M Simpson static int in6p_leave_group(struct inpcb *, struct sockopt *); 16133cde130SBruce M Simpson static struct ifnet * 16233cde130SBruce M Simpson in6p_lookup_mcast_ifp(const struct inpcb *, 16333cde130SBruce M Simpson const struct sockaddr_in6 *); 1648f002c6cSBruce M Simpson static int in6p_block_unblock_source(struct inpcb *, struct sockopt *); 1658f002c6cSBruce M Simpson static int in6p_set_multicast_if(struct inpcb *, struct sockopt *); 1668f002c6cSBruce M Simpson static int in6p_set_source_filters(struct inpcb *, struct sockopt *); 1678f002c6cSBruce M Simpson static int sysctl_ip6_mcast_filters(SYSCTL_HANDLER_ARGS); 1688f002c6cSBruce M Simpson 1698f002c6cSBruce M Simpson SYSCTL_DECL(_net_inet6_ip6); /* XXX Not in any common header. */ 1708f002c6cSBruce M Simpson 1716472ac3dSEd Schouten static SYSCTL_NODE(_net_inet6_ip6, OID_AUTO, mcast, CTLFLAG_RW, 0, 1726472ac3dSEd Schouten "IPv6 multicast"); 1738f002c6cSBruce M Simpson 1748f002c6cSBruce M Simpson static u_long in6_mcast_maxgrpsrc = IPV6_MAX_GROUP_SRC_FILTER; 1758f002c6cSBruce M Simpson SYSCTL_ULONG(_net_inet6_ip6_mcast, OID_AUTO, maxgrpsrc, 176af3b2549SHans Petter Selasky CTLFLAG_RWTUN, &in6_mcast_maxgrpsrc, 0, 1778f002c6cSBruce M Simpson "Max source filters per group"); 1788f002c6cSBruce M Simpson 1798f002c6cSBruce M Simpson static u_long in6_mcast_maxsocksrc = IPV6_MAX_SOCK_SRC_FILTER; 1808f002c6cSBruce M Simpson SYSCTL_ULONG(_net_inet6_ip6_mcast, OID_AUTO, maxsocksrc, 181af3b2549SHans Petter Selasky CTLFLAG_RWTUN, &in6_mcast_maxsocksrc, 0, 1828f002c6cSBruce M Simpson "Max source filters per socket"); 1838f002c6cSBruce M Simpson 1848f002c6cSBruce M Simpson /* TODO Virtualize this switch. */ 1858f002c6cSBruce M Simpson int in6_mcast_loop = IPV6_DEFAULT_MULTICAST_LOOP; 186af3b2549SHans Petter Selasky SYSCTL_INT(_net_inet6_ip6_mcast, OID_AUTO, loop, CTLFLAG_RWTUN, 1878f002c6cSBruce M Simpson &in6_mcast_loop, 0, "Loopback multicast datagrams by default"); 1888f002c6cSBruce M Simpson 1896472ac3dSEd Schouten static SYSCTL_NODE(_net_inet6_ip6_mcast, OID_AUTO, filters, 1908f002c6cSBruce M Simpson CTLFLAG_RD | CTLFLAG_MPSAFE, sysctl_ip6_mcast_filters, 1918f002c6cSBruce M Simpson "Per-interface stack-wide source filters"); 1928f002c6cSBruce M Simpson 193b6f6f880SMatt Macy int ifma6_restart = 0; 1946c5a340eSDimitry Andric #ifdef KTR 1958f002c6cSBruce M Simpson /* 1968f002c6cSBruce M Simpson * Inline function which wraps assertions for a valid ifp. 1978f002c6cSBruce M Simpson * The ifnet layer will set the ifma's ifp pointer to NULL if the ifp 1988f002c6cSBruce M Simpson * is detached. 1998f002c6cSBruce M Simpson */ 2008f002c6cSBruce M Simpson static int __inline 2018f002c6cSBruce M Simpson in6m_is_ifp_detached(const struct in6_multi *inm) 2028f002c6cSBruce M Simpson { 2038f002c6cSBruce M Simpson struct ifnet *ifp; 2048f002c6cSBruce M Simpson 2058f002c6cSBruce M Simpson KASSERT(inm->in6m_ifma != NULL, ("%s: no ifma", __func__)); 2068f002c6cSBruce M Simpson ifp = inm->in6m_ifma->ifma_ifp; 2078f002c6cSBruce M Simpson if (ifp != NULL) { 2088f002c6cSBruce M Simpson /* 2098f002c6cSBruce M Simpson * Sanity check that network-layer notion of ifp is the 2108f002c6cSBruce M Simpson * same as that of link-layer. 2118f002c6cSBruce M Simpson */ 2128f002c6cSBruce M Simpson KASSERT(inm->in6m_ifp == ifp, ("%s: bad ifp", __func__)); 2138f002c6cSBruce M Simpson } 2148f002c6cSBruce M Simpson 2158f002c6cSBruce M Simpson return (ifp == NULL); 2168f002c6cSBruce M Simpson } 2176c5a340eSDimitry Andric #endif 2188f002c6cSBruce M Simpson 2198f002c6cSBruce M Simpson /* 2208f002c6cSBruce M Simpson * Initialize an in6_mfilter structure to a known state at t0, t1 2218f002c6cSBruce M Simpson * with an empty source filter list. 2228f002c6cSBruce M Simpson */ 2238f002c6cSBruce M Simpson static __inline void 2248f002c6cSBruce M Simpson im6f_init(struct in6_mfilter *imf, const int st0, const int st1) 2258f002c6cSBruce M Simpson { 2268f002c6cSBruce M Simpson memset(imf, 0, sizeof(struct in6_mfilter)); 2278f002c6cSBruce M Simpson RB_INIT(&imf->im6f_sources); 2288f002c6cSBruce M Simpson imf->im6f_st[0] = st0; 2298f002c6cSBruce M Simpson imf->im6f_st[1] = st1; 2308f002c6cSBruce M Simpson } 2318f002c6cSBruce M Simpson 2328f002c6cSBruce M Simpson /* 2338f002c6cSBruce M Simpson * Resize the ip6_moptions vector to the next power-of-two minus 1. 2348f002c6cSBruce M Simpson * May be called with locks held; do not sleep. 2358f002c6cSBruce M Simpson */ 2368f002c6cSBruce M Simpson static int 2378f002c6cSBruce M Simpson im6o_grow(struct ip6_moptions *imo) 2388f002c6cSBruce M Simpson { 2398f002c6cSBruce M Simpson struct in6_multi **nmships; 2408f002c6cSBruce M Simpson struct in6_multi **omships; 2418f002c6cSBruce M Simpson struct in6_mfilter *nmfilters; 2428f002c6cSBruce M Simpson struct in6_mfilter *omfilters; 2438f002c6cSBruce M Simpson size_t idx; 2448f002c6cSBruce M Simpson size_t newmax; 2458f002c6cSBruce M Simpson size_t oldmax; 2468f002c6cSBruce M Simpson 2478f002c6cSBruce M Simpson nmships = NULL; 2488f002c6cSBruce M Simpson nmfilters = NULL; 2498f002c6cSBruce M Simpson omships = imo->im6o_membership; 2508f002c6cSBruce M Simpson omfilters = imo->im6o_mfilters; 2518f002c6cSBruce M Simpson oldmax = imo->im6o_max_memberships; 2528f002c6cSBruce M Simpson newmax = ((oldmax + 1) * 2) - 1; 2538f002c6cSBruce M Simpson 2548f002c6cSBruce M Simpson if (newmax <= IPV6_MAX_MEMBERSHIPS) { 2558f002c6cSBruce M Simpson nmships = (struct in6_multi **)realloc(omships, 2568f002c6cSBruce M Simpson sizeof(struct in6_multi *) * newmax, M_IP6MOPTS, M_NOWAIT); 2578f002c6cSBruce M Simpson nmfilters = (struct in6_mfilter *)realloc(omfilters, 2588f002c6cSBruce M Simpson sizeof(struct in6_mfilter) * newmax, M_IN6MFILTER, 2598f002c6cSBruce M Simpson M_NOWAIT); 2608f002c6cSBruce M Simpson if (nmships != NULL && nmfilters != NULL) { 2618f002c6cSBruce M Simpson /* Initialize newly allocated source filter heads. */ 2628f002c6cSBruce M Simpson for (idx = oldmax; idx < newmax; idx++) { 2638f002c6cSBruce M Simpson im6f_init(&nmfilters[idx], MCAST_UNDEFINED, 2648f002c6cSBruce M Simpson MCAST_EXCLUDE); 2658f002c6cSBruce M Simpson } 2668f002c6cSBruce M Simpson imo->im6o_max_memberships = newmax; 2678f002c6cSBruce M Simpson imo->im6o_membership = nmships; 2688f002c6cSBruce M Simpson imo->im6o_mfilters = nmfilters; 2698f002c6cSBruce M Simpson } 2708f002c6cSBruce M Simpson } 2718f002c6cSBruce M Simpson 2728f002c6cSBruce M Simpson if (nmships == NULL || nmfilters == NULL) { 2738f002c6cSBruce M Simpson if (nmships != NULL) 2748f002c6cSBruce M Simpson free(nmships, M_IP6MOPTS); 2758f002c6cSBruce M Simpson if (nmfilters != NULL) 2768f002c6cSBruce M Simpson free(nmfilters, M_IN6MFILTER); 2778f002c6cSBruce M Simpson return (ETOOMANYREFS); 2788f002c6cSBruce M Simpson } 2798f002c6cSBruce M Simpson 2808f002c6cSBruce M Simpson return (0); 2818f002c6cSBruce M Simpson } 2828f002c6cSBruce M Simpson 2838f002c6cSBruce M Simpson /* 2848f002c6cSBruce M Simpson * Find an IPv6 multicast group entry for this ip6_moptions instance 2858f002c6cSBruce M Simpson * which matches the specified group, and optionally an interface. 2868f002c6cSBruce M Simpson * Return its index into the array, or -1 if not found. 2878f002c6cSBruce M Simpson */ 2888f002c6cSBruce M Simpson static size_t 2898f002c6cSBruce M Simpson im6o_match_group(const struct ip6_moptions *imo, const struct ifnet *ifp, 2908f002c6cSBruce M Simpson const struct sockaddr *group) 2918f002c6cSBruce M Simpson { 2928f002c6cSBruce M Simpson const struct sockaddr_in6 *gsin6; 2938f002c6cSBruce M Simpson struct in6_multi **pinm; 2948f002c6cSBruce M Simpson int idx; 2958f002c6cSBruce M Simpson int nmships; 2968f002c6cSBruce M Simpson 2978f002c6cSBruce M Simpson gsin6 = (const struct sockaddr_in6 *)group; 2988f002c6cSBruce M Simpson 2998f002c6cSBruce M Simpson /* The im6o_membership array may be lazy allocated. */ 3008f002c6cSBruce M Simpson if (imo->im6o_membership == NULL || imo->im6o_num_memberships == 0) 3018f002c6cSBruce M Simpson return (-1); 3028f002c6cSBruce M Simpson 3038f002c6cSBruce M Simpson nmships = imo->im6o_num_memberships; 3048f002c6cSBruce M Simpson pinm = &imo->im6o_membership[0]; 3058f002c6cSBruce M Simpson for (idx = 0; idx < nmships; idx++, pinm++) { 3068f002c6cSBruce M Simpson if (*pinm == NULL) 3078f002c6cSBruce M Simpson continue; 3088f002c6cSBruce M Simpson if ((ifp == NULL || ((*pinm)->in6m_ifp == ifp)) && 3098f002c6cSBruce M Simpson IN6_ARE_ADDR_EQUAL(&(*pinm)->in6m_addr, 3108f002c6cSBruce M Simpson &gsin6->sin6_addr)) { 3118f002c6cSBruce M Simpson break; 3128f002c6cSBruce M Simpson } 3138f002c6cSBruce M Simpson } 3148f002c6cSBruce M Simpson if (idx >= nmships) 3158f002c6cSBruce M Simpson idx = -1; 3168f002c6cSBruce M Simpson 3178f002c6cSBruce M Simpson return (idx); 3188f002c6cSBruce M Simpson } 3198f002c6cSBruce M Simpson 3208f002c6cSBruce M Simpson /* 3218f002c6cSBruce M Simpson * Find an IPv6 multicast source entry for this imo which matches 3228f002c6cSBruce M Simpson * the given group index for this socket, and source address. 3238f002c6cSBruce M Simpson * 32429dc7bc6SBruce M Simpson * XXX TODO: The scope ID, if present in src, is stripped before 32529dc7bc6SBruce M Simpson * any comparison. We SHOULD enforce scope/zone checks where the source 32629dc7bc6SBruce M Simpson * filter entry has a link scope. 32729dc7bc6SBruce M Simpson * 3288f002c6cSBruce M Simpson * NOTE: This does not check if the entry is in-mode, merely if 3298f002c6cSBruce M Simpson * it exists, which may not be the desired behaviour. 3308f002c6cSBruce M Simpson */ 3318f002c6cSBruce M Simpson static struct in6_msource * 3328f002c6cSBruce M Simpson im6o_match_source(const struct ip6_moptions *imo, const size_t gidx, 3338f002c6cSBruce M Simpson const struct sockaddr *src) 3348f002c6cSBruce M Simpson { 3358f002c6cSBruce M Simpson struct ip6_msource find; 3368f002c6cSBruce M Simpson struct in6_mfilter *imf; 3378f002c6cSBruce M Simpson struct ip6_msource *ims; 3388f002c6cSBruce M Simpson const sockunion_t *psa; 3398f002c6cSBruce M Simpson 3408f002c6cSBruce M Simpson KASSERT(src->sa_family == AF_INET6, ("%s: !AF_INET6", __func__)); 3418f002c6cSBruce M Simpson KASSERT(gidx != -1 && gidx < imo->im6o_num_memberships, 3428f002c6cSBruce M Simpson ("%s: invalid index %d\n", __func__, (int)gidx)); 3438f002c6cSBruce M Simpson 3448f002c6cSBruce M Simpson /* The im6o_mfilters array may be lazy allocated. */ 3458f002c6cSBruce M Simpson if (imo->im6o_mfilters == NULL) 3468f002c6cSBruce M Simpson return (NULL); 3478f002c6cSBruce M Simpson imf = &imo->im6o_mfilters[gidx]; 3488f002c6cSBruce M Simpson 3498f002c6cSBruce M Simpson psa = (const sockunion_t *)src; 3508f002c6cSBruce M Simpson find.im6s_addr = psa->sin6.sin6_addr; 35129dc7bc6SBruce M Simpson in6_clearscope(&find.im6s_addr); /* XXX */ 3528f002c6cSBruce M Simpson ims = RB_FIND(ip6_msource_tree, &imf->im6f_sources, &find); 3538f002c6cSBruce M Simpson 3548f002c6cSBruce M Simpson return ((struct in6_msource *)ims); 3558f002c6cSBruce M Simpson } 3568f002c6cSBruce M Simpson 3578f002c6cSBruce M Simpson /* 3588f002c6cSBruce M Simpson * Perform filtering for multicast datagrams on a socket by group and source. 3598f002c6cSBruce M Simpson * 3608f002c6cSBruce M Simpson * Returns 0 if a datagram should be allowed through, or various error codes 3618f002c6cSBruce M Simpson * if the socket was not a member of the group, or the source was muted, etc. 3628f002c6cSBruce M Simpson */ 3638f002c6cSBruce M Simpson int 3648f002c6cSBruce M Simpson im6o_mc_filter(const struct ip6_moptions *imo, const struct ifnet *ifp, 3658f002c6cSBruce M Simpson const struct sockaddr *group, const struct sockaddr *src) 3668f002c6cSBruce M Simpson { 3678f002c6cSBruce M Simpson size_t gidx; 3688f002c6cSBruce M Simpson struct in6_msource *ims; 3698f002c6cSBruce M Simpson int mode; 3708f002c6cSBruce M Simpson 3718f002c6cSBruce M Simpson KASSERT(ifp != NULL, ("%s: null ifp", __func__)); 3728f002c6cSBruce M Simpson 3738f002c6cSBruce M Simpson gidx = im6o_match_group(imo, ifp, group); 3748f002c6cSBruce M Simpson if (gidx == -1) 3758f002c6cSBruce M Simpson return (MCAST_NOTGMEMBER); 3768f002c6cSBruce M Simpson 3778f002c6cSBruce M Simpson /* 3788f002c6cSBruce M Simpson * Check if the source was included in an (S,G) join. 3798f002c6cSBruce M Simpson * Allow reception on exclusive memberships by default, 3808f002c6cSBruce M Simpson * reject reception on inclusive memberships by default. 3818f002c6cSBruce M Simpson * Exclude source only if an in-mode exclude filter exists. 3828f002c6cSBruce M Simpson * Include source only if an in-mode include filter exists. 3838f002c6cSBruce M Simpson * NOTE: We are comparing group state here at MLD t1 (now) 3848f002c6cSBruce M Simpson * with socket-layer t0 (since last downcall). 3858f002c6cSBruce M Simpson */ 3868f002c6cSBruce M Simpson mode = imo->im6o_mfilters[gidx].im6f_st[1]; 3878f002c6cSBruce M Simpson ims = im6o_match_source(imo, gidx, src); 3888f002c6cSBruce M Simpson 3898f002c6cSBruce M Simpson if ((ims == NULL && mode == MCAST_INCLUDE) || 3908f002c6cSBruce M Simpson (ims != NULL && ims->im6sl_st[0] != mode)) 3918f002c6cSBruce M Simpson return (MCAST_NOTSMEMBER); 3928f002c6cSBruce M Simpson 3938f002c6cSBruce M Simpson return (MCAST_PASS); 3948f002c6cSBruce M Simpson } 3958f002c6cSBruce M Simpson 3968f002c6cSBruce M Simpson /* 3978f002c6cSBruce M Simpson * Find and return a reference to an in6_multi record for (ifp, group), 3988f002c6cSBruce M Simpson * and bump its reference count. 3998f002c6cSBruce M Simpson * If one does not exist, try to allocate it, and update link-layer multicast 4008f002c6cSBruce M Simpson * filters on ifp to listen for group. 4018f002c6cSBruce M Simpson * Assumes the IN6_MULTI lock is held across the call. 4028f002c6cSBruce M Simpson * Return 0 if successful, otherwise return an appropriate error code. 4038f002c6cSBruce M Simpson */ 4048f002c6cSBruce M Simpson static int 405f3e1324bSStephen Hurd in6_getmulti(struct ifnet *ifp, const struct in6_addr *group, 4068f002c6cSBruce M Simpson struct in6_multi **pinm) 4078f002c6cSBruce M Simpson { 4088f002c6cSBruce M Simpson struct sockaddr_in6 gsin6; 4098f002c6cSBruce M Simpson struct ifmultiaddr *ifma; 4108f002c6cSBruce M Simpson struct in6_multi *inm; 4118f002c6cSBruce M Simpson int error; 4128f002c6cSBruce M Simpson 4138f002c6cSBruce M Simpson error = 0; 4148f002c6cSBruce M Simpson 4158f002c6cSBruce M Simpson /* 4168f002c6cSBruce M Simpson * XXX: Accesses to ifma_protospec must be covered by IF_ADDR_LOCK; 4178f002c6cSBruce M Simpson * if_addmulti() takes this mutex itself, so we must drop and 4188f002c6cSBruce M Simpson * re-acquire around the call. 4198f002c6cSBruce M Simpson */ 4208f002c6cSBruce M Simpson IN6_MULTI_LOCK_ASSERT(); 421f3e1324bSStephen Hurd IN6_MULTI_LIST_LOCK(); 422137f91e8SJohn Baldwin IF_ADDR_WLOCK(ifp); 4238f002c6cSBruce M Simpson inm = in6m_lookup_locked(ifp, group); 4248f002c6cSBruce M Simpson if (inm != NULL) { 4258f002c6cSBruce M Simpson /* 4268f002c6cSBruce M Simpson * If we already joined this group, just bump the 4278f002c6cSBruce M Simpson * refcount and return it. 4288f002c6cSBruce M Simpson */ 4298f002c6cSBruce M Simpson KASSERT(inm->in6m_refcount >= 1, 4308f002c6cSBruce M Simpson ("%s: bad refcount %d", __func__, inm->in6m_refcount)); 431f3e1324bSStephen Hurd in6m_acquire_locked(inm); 4328f002c6cSBruce M Simpson *pinm = inm; 4338f002c6cSBruce M Simpson goto out_locked; 4348f002c6cSBruce M Simpson } 4358f002c6cSBruce M Simpson 4368f002c6cSBruce M Simpson memset(&gsin6, 0, sizeof(gsin6)); 4378f002c6cSBruce M Simpson gsin6.sin6_family = AF_INET6; 4388f002c6cSBruce M Simpson gsin6.sin6_len = sizeof(struct sockaddr_in6); 4398f002c6cSBruce M Simpson gsin6.sin6_addr = *group; 4408f002c6cSBruce M Simpson 4418f002c6cSBruce M Simpson /* 4428f002c6cSBruce M Simpson * Check if a link-layer group is already associated 4438f002c6cSBruce M Simpson * with this network-layer group on the given ifnet. 4448f002c6cSBruce M Simpson */ 445f3e1324bSStephen Hurd IN6_MULTI_LIST_UNLOCK(); 446137f91e8SJohn Baldwin IF_ADDR_WUNLOCK(ifp); 4478f002c6cSBruce M Simpson error = if_addmulti(ifp, (struct sockaddr *)&gsin6, &ifma); 4488f002c6cSBruce M Simpson if (error != 0) 4498f002c6cSBruce M Simpson return (error); 450f3e1324bSStephen Hurd IN6_MULTI_LIST_LOCK(); 451137f91e8SJohn Baldwin IF_ADDR_WLOCK(ifp); 4528f002c6cSBruce M Simpson 4538f002c6cSBruce M Simpson /* 4548f002c6cSBruce M Simpson * If something other than netinet6 is occupying the link-layer 4558f002c6cSBruce M Simpson * group, print a meaningful error message and back out of 4568f002c6cSBruce M Simpson * the allocation. 4578f002c6cSBruce M Simpson * Otherwise, bump the refcount on the existing network-layer 4588f002c6cSBruce M Simpson * group association and return it. 4598f002c6cSBruce M Simpson */ 4608f002c6cSBruce M Simpson if (ifma->ifma_protospec != NULL) { 4618f002c6cSBruce M Simpson inm = (struct in6_multi *)ifma->ifma_protospec; 4628f002c6cSBruce M Simpson #ifdef INVARIANTS 4638f002c6cSBruce M Simpson KASSERT(ifma->ifma_addr != NULL, ("%s: no ifma_addr", 4648f002c6cSBruce M Simpson __func__)); 4658f002c6cSBruce M Simpson KASSERT(ifma->ifma_addr->sa_family == AF_INET6, 4668f002c6cSBruce M Simpson ("%s: ifma not AF_INET6", __func__)); 4678f002c6cSBruce M Simpson KASSERT(inm != NULL, ("%s: no ifma_protospec", __func__)); 4688f002c6cSBruce M Simpson if (inm->in6m_ifma != ifma || inm->in6m_ifp != ifp || 4698f002c6cSBruce M Simpson !IN6_ARE_ADDR_EQUAL(&inm->in6m_addr, group)) 4708f002c6cSBruce M Simpson panic("%s: ifma %p is inconsistent with %p (%p)", 4718f002c6cSBruce M Simpson __func__, ifma, inm, group); 4728f002c6cSBruce M Simpson #endif 473f3e1324bSStephen Hurd in6m_acquire_locked(inm); 4748f002c6cSBruce M Simpson *pinm = inm; 4758f002c6cSBruce M Simpson goto out_locked; 4768f002c6cSBruce M Simpson } 4778f002c6cSBruce M Simpson 478137f91e8SJohn Baldwin IF_ADDR_WLOCK_ASSERT(ifp); 4798f002c6cSBruce M Simpson 4808f002c6cSBruce M Simpson /* 4818f002c6cSBruce M Simpson * A new in6_multi record is needed; allocate and initialize it. 4828f002c6cSBruce M Simpson * We DO NOT perform an MLD join as the in6_ layer may need to 4838f002c6cSBruce M Simpson * push an initial source list down to MLD to support SSM. 4848f002c6cSBruce M Simpson * 4858f002c6cSBruce M Simpson * The initial source filter state is INCLUDE, {} as per the RFC. 4868f002c6cSBruce M Simpson * Pending state-changes per group are subject to a bounds check. 4878f002c6cSBruce M Simpson */ 4888f002c6cSBruce M Simpson inm = malloc(sizeof(*inm), M_IP6MADDR, M_NOWAIT | M_ZERO); 4898f002c6cSBruce M Simpson if (inm == NULL) { 490f3e1324bSStephen Hurd IN6_MULTI_LIST_UNLOCK(); 49155faae77SConrad Meyer IF_ADDR_WUNLOCK(ifp); 4928f002c6cSBruce M Simpson if_delmulti_ifma(ifma); 49355faae77SConrad Meyer return (ENOMEM); 4948f002c6cSBruce M Simpson } 4958f002c6cSBruce M Simpson inm->in6m_addr = *group; 4968f002c6cSBruce M Simpson inm->in6m_ifp = ifp; 4978f002c6cSBruce M Simpson inm->in6m_mli = MLD_IFINFO(ifp); 4988f002c6cSBruce M Simpson inm->in6m_ifma = ifma; 4998f002c6cSBruce M Simpson inm->in6m_refcount = 1; 5008f002c6cSBruce M Simpson inm->in6m_state = MLD_NOT_MEMBER; 501a99c84d4SGleb Smirnoff mbufq_init(&inm->in6m_scq, MLD_MAX_STATE_CHANGES); 5028f002c6cSBruce M Simpson 5038f002c6cSBruce M Simpson inm->in6m_st[0].iss_fmode = MCAST_UNDEFINED; 5048f002c6cSBruce M Simpson inm->in6m_st[1].iss_fmode = MCAST_UNDEFINED; 5058f002c6cSBruce M Simpson RB_INIT(&inm->in6m_srcs); 5068f002c6cSBruce M Simpson 5078f002c6cSBruce M Simpson ifma->ifma_protospec = inm; 5088f002c6cSBruce M Simpson *pinm = inm; 5098f002c6cSBruce M Simpson 5108f002c6cSBruce M Simpson out_locked: 511f3e1324bSStephen Hurd IN6_MULTI_LIST_UNLOCK(); 512137f91e8SJohn Baldwin IF_ADDR_WUNLOCK(ifp); 5138f002c6cSBruce M Simpson return (error); 5148f002c6cSBruce M Simpson } 5158f002c6cSBruce M Simpson 5168f002c6cSBruce M Simpson /* 5178f002c6cSBruce M Simpson * Drop a reference to an in6_multi record. 5188f002c6cSBruce M Simpson * 5198f002c6cSBruce M Simpson * If the refcount drops to 0, free the in6_multi record and 5208f002c6cSBruce M Simpson * delete the underlying link-layer membership. 5218f002c6cSBruce M Simpson */ 522f3e1324bSStephen Hurd static void 523f3e1324bSStephen Hurd in6m_release(struct in6_multi *inm) 5248f002c6cSBruce M Simpson { 5258f002c6cSBruce M Simpson struct ifmultiaddr *ifma; 526f3e1324bSStephen Hurd struct ifnet *ifp; 5278f002c6cSBruce M Simpson 5288f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: refcount is %d", __func__, inm->in6m_refcount); 5298f002c6cSBruce M Simpson 530f3e1324bSStephen Hurd MPASS(inm->in6m_refcount == 0); 5318f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: freeing inm %p", __func__, inm); 5328f002c6cSBruce M Simpson 5338f002c6cSBruce M Simpson ifma = inm->in6m_ifma; 534f3e1324bSStephen Hurd ifp = inm->in6m_ifp; 535b6f6f880SMatt Macy MPASS(ifma->ifma_llifma == NULL); 5368f002c6cSBruce M Simpson 5378f002c6cSBruce M Simpson /* XXX this access is not covered by IF_ADDR_LOCK */ 5388f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: purging ifma %p", __func__, ifma); 539f3e1324bSStephen Hurd KASSERT(ifma->ifma_protospec == NULL, 540f3e1324bSStephen Hurd ("%s: ifma_protospec != NULL", __func__)); 5418f002c6cSBruce M Simpson 542f3e1324bSStephen Hurd if (ifp) 543f3e1324bSStephen Hurd CURVNET_SET(ifp->if_vnet); 5448f002c6cSBruce M Simpson in6m_purge(inm); 5458f002c6cSBruce M Simpson free(inm, M_IP6MADDR); 5468f002c6cSBruce M Simpson 547b6f6f880SMatt Macy if_delmulti_ifma_flags(ifma, 1); 548b6f6f880SMatt Macy if (ifp) { 549f3e1324bSStephen Hurd CURVNET_RESTORE(); 550b6f6f880SMatt Macy if_rele(ifp); 551b6f6f880SMatt Macy } 552f3e1324bSStephen Hurd } 553f3e1324bSStephen Hurd 554f3e1324bSStephen Hurd static struct grouptask free_gtask; 555f3e1324bSStephen Hurd static struct in6_multi_head in6m_free_list; 556f3e1324bSStephen Hurd static void in6m_release_task(void *arg __unused); 557f3e1324bSStephen Hurd static void in6m_init(void) 558f3e1324bSStephen Hurd { 559f3e1324bSStephen Hurd SLIST_INIT(&in6m_free_list); 560f3e1324bSStephen Hurd taskqgroup_config_gtask_init(NULL, &free_gtask, in6m_release_task, "in6m release task"); 561f3e1324bSStephen Hurd } 562f3e1324bSStephen Hurd 563f3e1324bSStephen Hurd SYSINIT(in6m_init, SI_SUB_SMP + 1, SI_ORDER_FIRST, 564f3e1324bSStephen Hurd in6m_init, NULL); 565f3e1324bSStephen Hurd 566f3e1324bSStephen Hurd 567f3e1324bSStephen Hurd void 568f3e1324bSStephen Hurd in6m_release_list_deferred(struct in6_multi_head *inmh) 569f3e1324bSStephen Hurd { 570f3e1324bSStephen Hurd if (SLIST_EMPTY(inmh)) 571f3e1324bSStephen Hurd return; 572f3e1324bSStephen Hurd mtx_lock(&in6_multi_free_mtx); 573f3e1324bSStephen Hurd SLIST_CONCAT(&in6m_free_list, inmh, in6_multi, in6m_nrele); 574f3e1324bSStephen Hurd mtx_unlock(&in6_multi_free_mtx); 575f3e1324bSStephen Hurd GROUPTASK_ENQUEUE(&free_gtask); 576f3e1324bSStephen Hurd } 577f3e1324bSStephen Hurd 578f3e1324bSStephen Hurd void 579b6f6f880SMatt Macy in6m_disconnect(struct in6_multi *inm) 580f3e1324bSStephen Hurd { 581f3e1324bSStephen Hurd struct ifnet *ifp; 582f3e1324bSStephen Hurd struct ifaddr *ifa; 583f3e1324bSStephen Hurd struct in6_ifaddr *ifa6; 58466fe09d8SAndrew Gallatin struct in6_multi_mship *imm, *imm_tmp; 585b6f6f880SMatt Macy struct ifmultiaddr *ifma, *ll_ifma; 586f3e1324bSStephen Hurd 587f3e1324bSStephen Hurd ifp = inm->in6m_ifp; 588b6f6f880SMatt Macy IF_ADDR_WLOCK_ASSERT(ifp); 589b6f6f880SMatt Macy ifma = inm->in6m_ifma; 590b6f6f880SMatt Macy 591b6f6f880SMatt Macy if_ref(ifp); 592d7c5a620SMatt Macy CK_STAILQ_REMOVE(&ifp->if_multiaddrs, ifma, ifmultiaddr, ifma_link); 593b6f6f880SMatt Macy MCDPRINTF("removed ifma: %p from %s\n", ifma, ifp->if_xname); 594b6f6f880SMatt Macy if ((ll_ifma = ifma->ifma_llifma) != NULL) { 595b6f6f880SMatt Macy MPASS(ifma != ll_ifma); 596b6f6f880SMatt Macy ifma->ifma_llifma = NULL; 597b6f6f880SMatt Macy MPASS(ll_ifma->ifma_llifma == NULL); 598b6f6f880SMatt Macy MPASS(ll_ifma->ifma_ifp == ifp); 599b6f6f880SMatt Macy if (--ll_ifma->ifma_refcount == 0) { 600b6f6f880SMatt Macy ifma6_restart = true; 601d7c5a620SMatt Macy CK_STAILQ_REMOVE(&ifp->if_multiaddrs, ll_ifma, ifmultiaddr, ifma_link); 602b6f6f880SMatt Macy MCDPRINTF("removed ll_ifma: %p from %s\n", ll_ifma, ifp->if_xname); 603b6f6f880SMatt Macy if_freemulti(ll_ifma); 604b6f6f880SMatt Macy } 605b6f6f880SMatt Macy } 606d7c5a620SMatt Macy CK_STAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) { 607f3e1324bSStephen Hurd if (ifa->ifa_addr->sa_family != AF_INET6) 608f3e1324bSStephen Hurd continue; 609f3e1324bSStephen Hurd ifa6 = (void *)ifa; 61066fe09d8SAndrew Gallatin LIST_FOREACH_SAFE(imm, &ifa6->ia6_memberships, 61166fe09d8SAndrew Gallatin i6mm_chain, imm_tmp) { 612b6f6f880SMatt Macy if (inm == imm->i6mm_maddr) { 613b6f6f880SMatt Macy LIST_REMOVE(imm, i6mm_chain); 614b6f6f880SMatt Macy free(imm, M_IP6MADDR); 615f3e1324bSStephen Hurd } 616f3e1324bSStephen Hurd } 617b6f6f880SMatt Macy } 618b6f6f880SMatt Macy } 619b6f6f880SMatt Macy 620b6f6f880SMatt Macy void 621b6f6f880SMatt Macy in6m_release_deferred(struct in6_multi *inm) 622b6f6f880SMatt Macy { 623b6f6f880SMatt Macy struct in6_multi_head tmp; 624b6f6f880SMatt Macy 625b6f6f880SMatt Macy IN6_MULTI_LIST_LOCK_ASSERT(); 626b6f6f880SMatt Macy KASSERT(inm->in6m_refcount > 0, ("refcount == %d inm: %p", inm->in6m_refcount, inm)); 627b6f6f880SMatt Macy if (--inm->in6m_refcount == 0) { 628b6f6f880SMatt Macy in6m_disconnect(inm); 629f3e1324bSStephen Hurd SLIST_INIT(&tmp); 630f3e1324bSStephen Hurd inm->in6m_ifma->ifma_protospec = NULL; 631b6f6f880SMatt Macy MPASS(inm->in6m_ifma->ifma_llifma == NULL); 632f3e1324bSStephen Hurd SLIST_INSERT_HEAD(&tmp, inm, in6m_nrele); 633f3e1324bSStephen Hurd in6m_release_list_deferred(&tmp); 634f3e1324bSStephen Hurd } 635f3e1324bSStephen Hurd } 636f3e1324bSStephen Hurd 637f3e1324bSStephen Hurd static void 638f3e1324bSStephen Hurd in6m_release_task(void *arg __unused) 639f3e1324bSStephen Hurd { 640f3e1324bSStephen Hurd struct in6_multi_head in6m_free_tmp; 641f3e1324bSStephen Hurd struct in6_multi *inm, *tinm; 642f3e1324bSStephen Hurd 643f3e1324bSStephen Hurd SLIST_INIT(&in6m_free_tmp); 644f3e1324bSStephen Hurd mtx_lock(&in6_multi_free_mtx); 645f3e1324bSStephen Hurd SLIST_CONCAT(&in6m_free_tmp, &in6m_free_list, in6_multi, in6m_nrele); 646f3e1324bSStephen Hurd mtx_unlock(&in6_multi_free_mtx); 647f3e1324bSStephen Hurd IN6_MULTI_LOCK(); 648f3e1324bSStephen Hurd SLIST_FOREACH_SAFE(inm, &in6m_free_tmp, in6m_nrele, tinm) { 649f3e1324bSStephen Hurd SLIST_REMOVE_HEAD(&in6m_free_tmp, in6m_nrele); 650f3e1324bSStephen Hurd in6m_release(inm); 651f3e1324bSStephen Hurd } 652f3e1324bSStephen Hurd IN6_MULTI_UNLOCK(); 6538f002c6cSBruce M Simpson } 6548f002c6cSBruce M Simpson 6558f002c6cSBruce M Simpson /* 6568f002c6cSBruce M Simpson * Clear recorded source entries for a group. 6578f002c6cSBruce M Simpson * Used by the MLD code. Caller must hold the IN6_MULTI lock. 6588f002c6cSBruce M Simpson * FIXME: Should reap. 6598f002c6cSBruce M Simpson */ 6608f002c6cSBruce M Simpson void 6618f002c6cSBruce M Simpson in6m_clear_recorded(struct in6_multi *inm) 6628f002c6cSBruce M Simpson { 6638f002c6cSBruce M Simpson struct ip6_msource *ims; 6648f002c6cSBruce M Simpson 665f3e1324bSStephen Hurd IN6_MULTI_LIST_LOCK_ASSERT(); 6668f002c6cSBruce M Simpson 6678f002c6cSBruce M Simpson RB_FOREACH(ims, ip6_msource_tree, &inm->in6m_srcs) { 6688f002c6cSBruce M Simpson if (ims->im6s_stp) { 6698f002c6cSBruce M Simpson ims->im6s_stp = 0; 6708f002c6cSBruce M Simpson --inm->in6m_st[1].iss_rec; 6718f002c6cSBruce M Simpson } 6728f002c6cSBruce M Simpson } 6738f002c6cSBruce M Simpson KASSERT(inm->in6m_st[1].iss_rec == 0, 6748f002c6cSBruce M Simpson ("%s: iss_rec %d not 0", __func__, inm->in6m_st[1].iss_rec)); 6758f002c6cSBruce M Simpson } 6768f002c6cSBruce M Simpson 6778f002c6cSBruce M Simpson /* 6788f002c6cSBruce M Simpson * Record a source as pending for a Source-Group MLDv2 query. 6798f002c6cSBruce M Simpson * This lives here as it modifies the shared tree. 6808f002c6cSBruce M Simpson * 6818f002c6cSBruce M Simpson * inm is the group descriptor. 6828f002c6cSBruce M Simpson * naddr is the address of the source to record in network-byte order. 6838f002c6cSBruce M Simpson * 6848f002c6cSBruce M Simpson * If the net.inet6.mld.sgalloc sysctl is non-zero, we will 6858f002c6cSBruce M Simpson * lazy-allocate a source node in response to an SG query. 6868f002c6cSBruce M Simpson * Otherwise, no allocation is performed. This saves some memory 6878f002c6cSBruce M Simpson * with the trade-off that the source will not be reported to the 6888f002c6cSBruce M Simpson * router if joined in the window between the query response and 6898f002c6cSBruce M Simpson * the group actually being joined on the local host. 6908f002c6cSBruce M Simpson * 6918f002c6cSBruce M Simpson * VIMAGE: XXX: Currently the mld_sgalloc feature has been removed. 6928f002c6cSBruce M Simpson * This turns off the allocation of a recorded source entry if 6938f002c6cSBruce M Simpson * the group has not been joined. 6948f002c6cSBruce M Simpson * 6958f002c6cSBruce M Simpson * Return 0 if the source didn't exist or was already marked as recorded. 6968f002c6cSBruce M Simpson * Return 1 if the source was marked as recorded by this function. 697a4641f4eSPedro F. Giffuni * Return <0 if any error occurred (negated errno code). 6988f002c6cSBruce M Simpson */ 6998f002c6cSBruce M Simpson int 7008f002c6cSBruce M Simpson in6m_record_source(struct in6_multi *inm, const struct in6_addr *addr) 7018f002c6cSBruce M Simpson { 7028f002c6cSBruce M Simpson struct ip6_msource find; 7038f002c6cSBruce M Simpson struct ip6_msource *ims, *nims; 7048f002c6cSBruce M Simpson 705f3e1324bSStephen Hurd IN6_MULTI_LIST_LOCK_ASSERT(); 7068f002c6cSBruce M Simpson 7078f002c6cSBruce M Simpson find.im6s_addr = *addr; 7088f002c6cSBruce M Simpson ims = RB_FIND(ip6_msource_tree, &inm->in6m_srcs, &find); 7098f002c6cSBruce M Simpson if (ims && ims->im6s_stp) 7108f002c6cSBruce M Simpson return (0); 7118f002c6cSBruce M Simpson if (ims == NULL) { 7128f002c6cSBruce M Simpson if (inm->in6m_nsrc == in6_mcast_maxgrpsrc) 7138f002c6cSBruce M Simpson return (-ENOSPC); 7148f002c6cSBruce M Simpson nims = malloc(sizeof(struct ip6_msource), M_IP6MSOURCE, 7158f002c6cSBruce M Simpson M_NOWAIT | M_ZERO); 7168f002c6cSBruce M Simpson if (nims == NULL) 7178f002c6cSBruce M Simpson return (-ENOMEM); 7188f002c6cSBruce M Simpson nims->im6s_addr = find.im6s_addr; 7198f002c6cSBruce M Simpson RB_INSERT(ip6_msource_tree, &inm->in6m_srcs, nims); 7208f002c6cSBruce M Simpson ++inm->in6m_nsrc; 7218f002c6cSBruce M Simpson ims = nims; 7228f002c6cSBruce M Simpson } 7238f002c6cSBruce M Simpson 7248f002c6cSBruce M Simpson /* 7258f002c6cSBruce M Simpson * Mark the source as recorded and update the recorded 7268f002c6cSBruce M Simpson * source count. 7278f002c6cSBruce M Simpson */ 7288f002c6cSBruce M Simpson ++ims->im6s_stp; 7298f002c6cSBruce M Simpson ++inm->in6m_st[1].iss_rec; 7308f002c6cSBruce M Simpson 7318f002c6cSBruce M Simpson return (1); 7328f002c6cSBruce M Simpson } 7338f002c6cSBruce M Simpson 7348f002c6cSBruce M Simpson /* 7358f002c6cSBruce M Simpson * Return a pointer to an in6_msource owned by an in6_mfilter, 7368f002c6cSBruce M Simpson * given its source address. 7378f002c6cSBruce M Simpson * Lazy-allocate if needed. If this is a new entry its filter state is 7388f002c6cSBruce M Simpson * undefined at t0. 7398f002c6cSBruce M Simpson * 7408f002c6cSBruce M Simpson * imf is the filter set being modified. 7418f002c6cSBruce M Simpson * addr is the source address. 7428f002c6cSBruce M Simpson * 7438f002c6cSBruce M Simpson * SMPng: May be called with locks held; malloc must not block. 7448f002c6cSBruce M Simpson */ 7458f002c6cSBruce M Simpson static int 7468f002c6cSBruce M Simpson im6f_get_source(struct in6_mfilter *imf, const struct sockaddr_in6 *psin, 7478f002c6cSBruce M Simpson struct in6_msource **plims) 7488f002c6cSBruce M Simpson { 7498f002c6cSBruce M Simpson struct ip6_msource find; 7508f002c6cSBruce M Simpson struct ip6_msource *ims, *nims; 7518f002c6cSBruce M Simpson struct in6_msource *lims; 7528f002c6cSBruce M Simpson int error; 7538f002c6cSBruce M Simpson 7548f002c6cSBruce M Simpson error = 0; 7558f002c6cSBruce M Simpson ims = NULL; 7568f002c6cSBruce M Simpson lims = NULL; 7578f002c6cSBruce M Simpson 7588f002c6cSBruce M Simpson find.im6s_addr = psin->sin6_addr; 7598f002c6cSBruce M Simpson ims = RB_FIND(ip6_msource_tree, &imf->im6f_sources, &find); 7608f002c6cSBruce M Simpson lims = (struct in6_msource *)ims; 7618f002c6cSBruce M Simpson if (lims == NULL) { 7628f002c6cSBruce M Simpson if (imf->im6f_nsrc == in6_mcast_maxsocksrc) 7638f002c6cSBruce M Simpson return (ENOSPC); 7648f002c6cSBruce M Simpson nims = malloc(sizeof(struct in6_msource), M_IN6MFILTER, 7658f002c6cSBruce M Simpson M_NOWAIT | M_ZERO); 7668f002c6cSBruce M Simpson if (nims == NULL) 7678f002c6cSBruce M Simpson return (ENOMEM); 7688f002c6cSBruce M Simpson lims = (struct in6_msource *)nims; 7698f002c6cSBruce M Simpson lims->im6s_addr = find.im6s_addr; 7708f002c6cSBruce M Simpson lims->im6sl_st[0] = MCAST_UNDEFINED; 7718f002c6cSBruce M Simpson RB_INSERT(ip6_msource_tree, &imf->im6f_sources, nims); 7728f002c6cSBruce M Simpson ++imf->im6f_nsrc; 7738f002c6cSBruce M Simpson } 7748f002c6cSBruce M Simpson 7758f002c6cSBruce M Simpson *plims = lims; 7768f002c6cSBruce M Simpson 7778f002c6cSBruce M Simpson return (error); 7788f002c6cSBruce M Simpson } 7798f002c6cSBruce M Simpson 7808f002c6cSBruce M Simpson /* 7818f002c6cSBruce M Simpson * Graft a source entry into an existing socket-layer filter set, 7828f002c6cSBruce M Simpson * maintaining any required invariants and checking allocations. 7838f002c6cSBruce M Simpson * 7848f002c6cSBruce M Simpson * The source is marked as being in the new filter mode at t1. 7858f002c6cSBruce M Simpson * 7868f002c6cSBruce M Simpson * Return the pointer to the new node, otherwise return NULL. 7878f002c6cSBruce M Simpson */ 7888f002c6cSBruce M Simpson static struct in6_msource * 7898f002c6cSBruce M Simpson im6f_graft(struct in6_mfilter *imf, const uint8_t st1, 7908f002c6cSBruce M Simpson const struct sockaddr_in6 *psin) 7918f002c6cSBruce M Simpson { 7928f002c6cSBruce M Simpson struct ip6_msource *nims; 7938f002c6cSBruce M Simpson struct in6_msource *lims; 7948f002c6cSBruce M Simpson 7958f002c6cSBruce M Simpson nims = malloc(sizeof(struct in6_msource), M_IN6MFILTER, 7968f002c6cSBruce M Simpson M_NOWAIT | M_ZERO); 7978f002c6cSBruce M Simpson if (nims == NULL) 7988f002c6cSBruce M Simpson return (NULL); 7998f002c6cSBruce M Simpson lims = (struct in6_msource *)nims; 8008f002c6cSBruce M Simpson lims->im6s_addr = psin->sin6_addr; 8018f002c6cSBruce M Simpson lims->im6sl_st[0] = MCAST_UNDEFINED; 8028f002c6cSBruce M Simpson lims->im6sl_st[1] = st1; 8038f002c6cSBruce M Simpson RB_INSERT(ip6_msource_tree, &imf->im6f_sources, nims); 8048f002c6cSBruce M Simpson ++imf->im6f_nsrc; 8058f002c6cSBruce M Simpson 8068f002c6cSBruce M Simpson return (lims); 8078f002c6cSBruce M Simpson } 8088f002c6cSBruce M Simpson 8098f002c6cSBruce M Simpson /* 8108f002c6cSBruce M Simpson * Prune a source entry from an existing socket-layer filter set, 8118f002c6cSBruce M Simpson * maintaining any required invariants and checking allocations. 8128f002c6cSBruce M Simpson * 8138f002c6cSBruce M Simpson * The source is marked as being left at t1, it is not freed. 8148f002c6cSBruce M Simpson * 8158f002c6cSBruce M Simpson * Return 0 if no error occurred, otherwise return an errno value. 8168f002c6cSBruce M Simpson */ 8178f002c6cSBruce M Simpson static int 8188f002c6cSBruce M Simpson im6f_prune(struct in6_mfilter *imf, const struct sockaddr_in6 *psin) 8198f002c6cSBruce M Simpson { 8208f002c6cSBruce M Simpson struct ip6_msource find; 8218f002c6cSBruce M Simpson struct ip6_msource *ims; 8228f002c6cSBruce M Simpson struct in6_msource *lims; 8238f002c6cSBruce M Simpson 8248f002c6cSBruce M Simpson find.im6s_addr = psin->sin6_addr; 8258f002c6cSBruce M Simpson ims = RB_FIND(ip6_msource_tree, &imf->im6f_sources, &find); 8268f002c6cSBruce M Simpson if (ims == NULL) 8278f002c6cSBruce M Simpson return (ENOENT); 8288f002c6cSBruce M Simpson lims = (struct in6_msource *)ims; 8298f002c6cSBruce M Simpson lims->im6sl_st[1] = MCAST_UNDEFINED; 8308f002c6cSBruce M Simpson return (0); 8318f002c6cSBruce M Simpson } 8328f002c6cSBruce M Simpson 8338f002c6cSBruce M Simpson /* 8348f002c6cSBruce M Simpson * Revert socket-layer filter set deltas at t1 to t0 state. 8358f002c6cSBruce M Simpson */ 8368f002c6cSBruce M Simpson static void 8378f002c6cSBruce M Simpson im6f_rollback(struct in6_mfilter *imf) 8388f002c6cSBruce M Simpson { 8398f002c6cSBruce M Simpson struct ip6_msource *ims, *tims; 8408f002c6cSBruce M Simpson struct in6_msource *lims; 8418f002c6cSBruce M Simpson 8428f002c6cSBruce M Simpson RB_FOREACH_SAFE(ims, ip6_msource_tree, &imf->im6f_sources, tims) { 8438f002c6cSBruce M Simpson lims = (struct in6_msource *)ims; 8448f002c6cSBruce M Simpson if (lims->im6sl_st[0] == lims->im6sl_st[1]) { 8458f002c6cSBruce M Simpson /* no change at t1 */ 8468f002c6cSBruce M Simpson continue; 8478f002c6cSBruce M Simpson } else if (lims->im6sl_st[0] != MCAST_UNDEFINED) { 8488f002c6cSBruce M Simpson /* revert change to existing source at t1 */ 8498f002c6cSBruce M Simpson lims->im6sl_st[1] = lims->im6sl_st[0]; 8508f002c6cSBruce M Simpson } else { 8518f002c6cSBruce M Simpson /* revert source added t1 */ 8528f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: free ims %p", __func__, ims); 8538f002c6cSBruce M Simpson RB_REMOVE(ip6_msource_tree, &imf->im6f_sources, ims); 8548f002c6cSBruce M Simpson free(ims, M_IN6MFILTER); 8558f002c6cSBruce M Simpson imf->im6f_nsrc--; 8568f002c6cSBruce M Simpson } 8578f002c6cSBruce M Simpson } 8588f002c6cSBruce M Simpson imf->im6f_st[1] = imf->im6f_st[0]; 8598f002c6cSBruce M Simpson } 8608f002c6cSBruce M Simpson 8618f002c6cSBruce M Simpson /* 8628f002c6cSBruce M Simpson * Mark socket-layer filter set as INCLUDE {} at t1. 8638f002c6cSBruce M Simpson */ 8648f002c6cSBruce M Simpson static void 8658f002c6cSBruce M Simpson im6f_leave(struct in6_mfilter *imf) 8668f002c6cSBruce M Simpson { 8678f002c6cSBruce M Simpson struct ip6_msource *ims; 8688f002c6cSBruce M Simpson struct in6_msource *lims; 8698f002c6cSBruce M Simpson 8708f002c6cSBruce M Simpson RB_FOREACH(ims, ip6_msource_tree, &imf->im6f_sources) { 8718f002c6cSBruce M Simpson lims = (struct in6_msource *)ims; 8728f002c6cSBruce M Simpson lims->im6sl_st[1] = MCAST_UNDEFINED; 8738f002c6cSBruce M Simpson } 8748f002c6cSBruce M Simpson imf->im6f_st[1] = MCAST_INCLUDE; 8758f002c6cSBruce M Simpson } 8768f002c6cSBruce M Simpson 8778f002c6cSBruce M Simpson /* 8788f002c6cSBruce M Simpson * Mark socket-layer filter set deltas as committed. 8798f002c6cSBruce M Simpson */ 8808f002c6cSBruce M Simpson static void 8818f002c6cSBruce M Simpson im6f_commit(struct in6_mfilter *imf) 8828f002c6cSBruce M Simpson { 8838f002c6cSBruce M Simpson struct ip6_msource *ims; 8848f002c6cSBruce M Simpson struct in6_msource *lims; 8858f002c6cSBruce M Simpson 8868f002c6cSBruce M Simpson RB_FOREACH(ims, ip6_msource_tree, &imf->im6f_sources) { 8878f002c6cSBruce M Simpson lims = (struct in6_msource *)ims; 8888f002c6cSBruce M Simpson lims->im6sl_st[0] = lims->im6sl_st[1]; 8898f002c6cSBruce M Simpson } 8908f002c6cSBruce M Simpson imf->im6f_st[0] = imf->im6f_st[1]; 8918f002c6cSBruce M Simpson } 8928f002c6cSBruce M Simpson 8938f002c6cSBruce M Simpson /* 8948f002c6cSBruce M Simpson * Reap unreferenced sources from socket-layer filter set. 8958f002c6cSBruce M Simpson */ 8968f002c6cSBruce M Simpson static void 8978f002c6cSBruce M Simpson im6f_reap(struct in6_mfilter *imf) 8988f002c6cSBruce M Simpson { 8998f002c6cSBruce M Simpson struct ip6_msource *ims, *tims; 9008f002c6cSBruce M Simpson struct in6_msource *lims; 9018f002c6cSBruce M Simpson 9028f002c6cSBruce M Simpson RB_FOREACH_SAFE(ims, ip6_msource_tree, &imf->im6f_sources, tims) { 9038f002c6cSBruce M Simpson lims = (struct in6_msource *)ims; 9048f002c6cSBruce M Simpson if ((lims->im6sl_st[0] == MCAST_UNDEFINED) && 9058f002c6cSBruce M Simpson (lims->im6sl_st[1] == MCAST_UNDEFINED)) { 9068f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: free lims %p", __func__, ims); 9078f002c6cSBruce M Simpson RB_REMOVE(ip6_msource_tree, &imf->im6f_sources, ims); 9088f002c6cSBruce M Simpson free(ims, M_IN6MFILTER); 9098f002c6cSBruce M Simpson imf->im6f_nsrc--; 9108f002c6cSBruce M Simpson } 9118f002c6cSBruce M Simpson } 9128f002c6cSBruce M Simpson } 9138f002c6cSBruce M Simpson 9148f002c6cSBruce M Simpson /* 9158f002c6cSBruce M Simpson * Purge socket-layer filter set. 9168f002c6cSBruce M Simpson */ 9178f002c6cSBruce M Simpson static void 9188f002c6cSBruce M Simpson im6f_purge(struct in6_mfilter *imf) 9198f002c6cSBruce M Simpson { 9208f002c6cSBruce M Simpson struct ip6_msource *ims, *tims; 9218f002c6cSBruce M Simpson 9228f002c6cSBruce M Simpson RB_FOREACH_SAFE(ims, ip6_msource_tree, &imf->im6f_sources, tims) { 9238f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: free ims %p", __func__, ims); 9248f002c6cSBruce M Simpson RB_REMOVE(ip6_msource_tree, &imf->im6f_sources, ims); 9258f002c6cSBruce M Simpson free(ims, M_IN6MFILTER); 9268f002c6cSBruce M Simpson imf->im6f_nsrc--; 9278f002c6cSBruce M Simpson } 9288f002c6cSBruce M Simpson imf->im6f_st[0] = imf->im6f_st[1] = MCAST_UNDEFINED; 9298f002c6cSBruce M Simpson KASSERT(RB_EMPTY(&imf->im6f_sources), 9308f002c6cSBruce M Simpson ("%s: im6f_sources not empty", __func__)); 9318f002c6cSBruce M Simpson } 9328f002c6cSBruce M Simpson 9338f002c6cSBruce M Simpson /* 9348f002c6cSBruce M Simpson * Look up a source filter entry for a multicast group. 9358f002c6cSBruce M Simpson * 9368f002c6cSBruce M Simpson * inm is the group descriptor to work with. 9378f002c6cSBruce M Simpson * addr is the IPv6 address to look up. 9388f002c6cSBruce M Simpson * noalloc may be non-zero to suppress allocation of sources. 9398f002c6cSBruce M Simpson * *pims will be set to the address of the retrieved or allocated source. 9408f002c6cSBruce M Simpson * 9418f002c6cSBruce M Simpson * SMPng: NOTE: may be called with locks held. 9428f002c6cSBruce M Simpson * Return 0 if successful, otherwise return a non-zero error code. 9438f002c6cSBruce M Simpson */ 9448f002c6cSBruce M Simpson static int 9458f002c6cSBruce M Simpson in6m_get_source(struct in6_multi *inm, const struct in6_addr *addr, 9468f002c6cSBruce M Simpson const int noalloc, struct ip6_msource **pims) 9478f002c6cSBruce M Simpson { 9488f002c6cSBruce M Simpson struct ip6_msource find; 9498f002c6cSBruce M Simpson struct ip6_msource *ims, *nims; 9508f002c6cSBruce M Simpson #ifdef KTR 9518f002c6cSBruce M Simpson char ip6tbuf[INET6_ADDRSTRLEN]; 9528f002c6cSBruce M Simpson #endif 9538f002c6cSBruce M Simpson 9548f002c6cSBruce M Simpson find.im6s_addr = *addr; 9558f002c6cSBruce M Simpson ims = RB_FIND(ip6_msource_tree, &inm->in6m_srcs, &find); 9568f002c6cSBruce M Simpson if (ims == NULL && !noalloc) { 9578f002c6cSBruce M Simpson if (inm->in6m_nsrc == in6_mcast_maxgrpsrc) 9588f002c6cSBruce M Simpson return (ENOSPC); 9598f002c6cSBruce M Simpson nims = malloc(sizeof(struct ip6_msource), M_IP6MSOURCE, 9608f002c6cSBruce M Simpson M_NOWAIT | M_ZERO); 9618f002c6cSBruce M Simpson if (nims == NULL) 9628f002c6cSBruce M Simpson return (ENOMEM); 9638f002c6cSBruce M Simpson nims->im6s_addr = *addr; 9648f002c6cSBruce M Simpson RB_INSERT(ip6_msource_tree, &inm->in6m_srcs, nims); 9658f002c6cSBruce M Simpson ++inm->in6m_nsrc; 9668f002c6cSBruce M Simpson ims = nims; 9678f002c6cSBruce M Simpson CTR3(KTR_MLD, "%s: allocated %s as %p", __func__, 9688f002c6cSBruce M Simpson ip6_sprintf(ip6tbuf, addr), ims); 9698f002c6cSBruce M Simpson } 9708f002c6cSBruce M Simpson 9718f002c6cSBruce M Simpson *pims = ims; 9728f002c6cSBruce M Simpson return (0); 9738f002c6cSBruce M Simpson } 9748f002c6cSBruce M Simpson 9758f002c6cSBruce M Simpson /* 9768f002c6cSBruce M Simpson * Merge socket-layer source into MLD-layer source. 9778f002c6cSBruce M Simpson * If rollback is non-zero, perform the inverse of the merge. 9788f002c6cSBruce M Simpson */ 9798f002c6cSBruce M Simpson static void 9808f002c6cSBruce M Simpson im6s_merge(struct ip6_msource *ims, const struct in6_msource *lims, 9818f002c6cSBruce M Simpson const int rollback) 9828f002c6cSBruce M Simpson { 9838f002c6cSBruce M Simpson int n = rollback ? -1 : 1; 9848f002c6cSBruce M Simpson #ifdef KTR 9858f002c6cSBruce M Simpson char ip6tbuf[INET6_ADDRSTRLEN]; 9868f002c6cSBruce M Simpson 9878f002c6cSBruce M Simpson ip6_sprintf(ip6tbuf, &lims->im6s_addr); 9888f002c6cSBruce M Simpson #endif 9898f002c6cSBruce M Simpson 9908f002c6cSBruce M Simpson if (lims->im6sl_st[0] == MCAST_EXCLUDE) { 9918f002c6cSBruce M Simpson CTR3(KTR_MLD, "%s: t1 ex -= %d on %s", __func__, n, ip6tbuf); 9928f002c6cSBruce M Simpson ims->im6s_st[1].ex -= n; 9938f002c6cSBruce M Simpson } else if (lims->im6sl_st[0] == MCAST_INCLUDE) { 9948f002c6cSBruce M Simpson CTR3(KTR_MLD, "%s: t1 in -= %d on %s", __func__, n, ip6tbuf); 9958f002c6cSBruce M Simpson ims->im6s_st[1].in -= n; 9968f002c6cSBruce M Simpson } 9978f002c6cSBruce M Simpson 9988f002c6cSBruce M Simpson if (lims->im6sl_st[1] == MCAST_EXCLUDE) { 9998f002c6cSBruce M Simpson CTR3(KTR_MLD, "%s: t1 ex += %d on %s", __func__, n, ip6tbuf); 10008f002c6cSBruce M Simpson ims->im6s_st[1].ex += n; 10018f002c6cSBruce M Simpson } else if (lims->im6sl_st[1] == MCAST_INCLUDE) { 10028f002c6cSBruce M Simpson CTR3(KTR_MLD, "%s: t1 in += %d on %s", __func__, n, ip6tbuf); 10038f002c6cSBruce M Simpson ims->im6s_st[1].in += n; 10048f002c6cSBruce M Simpson } 10058f002c6cSBruce M Simpson } 10068f002c6cSBruce M Simpson 10078f002c6cSBruce M Simpson /* 10088f002c6cSBruce M Simpson * Atomically update the global in6_multi state, when a membership's 10098f002c6cSBruce M Simpson * filter list is being updated in any way. 10108f002c6cSBruce M Simpson * 10118f002c6cSBruce M Simpson * imf is the per-inpcb-membership group filter pointer. 10128f002c6cSBruce M Simpson * A fake imf may be passed for in-kernel consumers. 10138f002c6cSBruce M Simpson * 10148f002c6cSBruce M Simpson * XXX This is a candidate for a set-symmetric-difference style loop 10158f002c6cSBruce M Simpson * which would eliminate the repeated lookup from root of ims nodes, 10168f002c6cSBruce M Simpson * as they share the same key space. 10178f002c6cSBruce M Simpson * 10188f002c6cSBruce M Simpson * If any error occurred this function will back out of refcounts 10198f002c6cSBruce M Simpson * and return a non-zero value. 10208f002c6cSBruce M Simpson */ 10218f002c6cSBruce M Simpson static int 10228f002c6cSBruce M Simpson in6m_merge(struct in6_multi *inm, /*const*/ struct in6_mfilter *imf) 10238f002c6cSBruce M Simpson { 10248f002c6cSBruce M Simpson struct ip6_msource *ims, *nims; 10258f002c6cSBruce M Simpson struct in6_msource *lims; 10268f002c6cSBruce M Simpson int schanged, error; 10278f002c6cSBruce M Simpson int nsrc0, nsrc1; 10288f002c6cSBruce M Simpson 10298f002c6cSBruce M Simpson schanged = 0; 10308f002c6cSBruce M Simpson error = 0; 10318f002c6cSBruce M Simpson nsrc1 = nsrc0 = 0; 1032f3e1324bSStephen Hurd IN6_MULTI_LIST_LOCK_ASSERT(); 10338f002c6cSBruce M Simpson 10348f002c6cSBruce M Simpson /* 10358f002c6cSBruce M Simpson * Update the source filters first, as this may fail. 10368f002c6cSBruce M Simpson * Maintain count of in-mode filters at t0, t1. These are 10378f002c6cSBruce M Simpson * used to work out if we transition into ASM mode or not. 10388f002c6cSBruce M Simpson * Maintain a count of source filters whose state was 10398f002c6cSBruce M Simpson * actually modified by this operation. 10408f002c6cSBruce M Simpson */ 10418f002c6cSBruce M Simpson RB_FOREACH(ims, ip6_msource_tree, &imf->im6f_sources) { 10428f002c6cSBruce M Simpson lims = (struct in6_msource *)ims; 10438f002c6cSBruce M Simpson if (lims->im6sl_st[0] == imf->im6f_st[0]) nsrc0++; 10448f002c6cSBruce M Simpson if (lims->im6sl_st[1] == imf->im6f_st[1]) nsrc1++; 10458f002c6cSBruce M Simpson if (lims->im6sl_st[0] == lims->im6sl_st[1]) continue; 10468f002c6cSBruce M Simpson error = in6m_get_source(inm, &lims->im6s_addr, 0, &nims); 10478f002c6cSBruce M Simpson ++schanged; 10488f002c6cSBruce M Simpson if (error) 10498f002c6cSBruce M Simpson break; 10508f002c6cSBruce M Simpson im6s_merge(nims, lims, 0); 10518f002c6cSBruce M Simpson } 10528f002c6cSBruce M Simpson if (error) { 10538f002c6cSBruce M Simpson struct ip6_msource *bims; 10548f002c6cSBruce M Simpson 10558f002c6cSBruce M Simpson RB_FOREACH_REVERSE_FROM(ims, ip6_msource_tree, nims) { 10568f002c6cSBruce M Simpson lims = (struct in6_msource *)ims; 10578f002c6cSBruce M Simpson if (lims->im6sl_st[0] == lims->im6sl_st[1]) 10588f002c6cSBruce M Simpson continue; 10598f002c6cSBruce M Simpson (void)in6m_get_source(inm, &lims->im6s_addr, 1, &bims); 10608f002c6cSBruce M Simpson if (bims == NULL) 10618f002c6cSBruce M Simpson continue; 10628f002c6cSBruce M Simpson im6s_merge(bims, lims, 1); 10638f002c6cSBruce M Simpson } 10648f002c6cSBruce M Simpson goto out_reap; 10658f002c6cSBruce M Simpson } 10668f002c6cSBruce M Simpson 10678f002c6cSBruce M Simpson CTR3(KTR_MLD, "%s: imf filters in-mode: %d at t0, %d at t1", 10688f002c6cSBruce M Simpson __func__, nsrc0, nsrc1); 10698f002c6cSBruce M Simpson 10708f002c6cSBruce M Simpson /* Handle transition between INCLUDE {n} and INCLUDE {} on socket. */ 10718f002c6cSBruce M Simpson if (imf->im6f_st[0] == imf->im6f_st[1] && 10728f002c6cSBruce M Simpson imf->im6f_st[1] == MCAST_INCLUDE) { 10738f002c6cSBruce M Simpson if (nsrc1 == 0) { 10748f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: --in on inm at t1", __func__); 10758f002c6cSBruce M Simpson --inm->in6m_st[1].iss_in; 10768f002c6cSBruce M Simpson } 10778f002c6cSBruce M Simpson } 10788f002c6cSBruce M Simpson 10798f002c6cSBruce M Simpson /* Handle filter mode transition on socket. */ 10808f002c6cSBruce M Simpson if (imf->im6f_st[0] != imf->im6f_st[1]) { 10818f002c6cSBruce M Simpson CTR3(KTR_MLD, "%s: imf transition %d to %d", 10828f002c6cSBruce M Simpson __func__, imf->im6f_st[0], imf->im6f_st[1]); 10838f002c6cSBruce M Simpson 10848f002c6cSBruce M Simpson if (imf->im6f_st[0] == MCAST_EXCLUDE) { 10858f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: --ex on inm at t1", __func__); 10868f002c6cSBruce M Simpson --inm->in6m_st[1].iss_ex; 10878f002c6cSBruce M Simpson } else if (imf->im6f_st[0] == MCAST_INCLUDE) { 10888f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: --in on inm at t1", __func__); 10898f002c6cSBruce M Simpson --inm->in6m_st[1].iss_in; 10908f002c6cSBruce M Simpson } 10918f002c6cSBruce M Simpson 10928f002c6cSBruce M Simpson if (imf->im6f_st[1] == MCAST_EXCLUDE) { 10938f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: ex++ on inm at t1", __func__); 10948f002c6cSBruce M Simpson inm->in6m_st[1].iss_ex++; 10958f002c6cSBruce M Simpson } else if (imf->im6f_st[1] == MCAST_INCLUDE && nsrc1 > 0) { 10968f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: in++ on inm at t1", __func__); 10978f002c6cSBruce M Simpson inm->in6m_st[1].iss_in++; 10988f002c6cSBruce M Simpson } 10998f002c6cSBruce M Simpson } 11008f002c6cSBruce M Simpson 11018f002c6cSBruce M Simpson /* 11028f002c6cSBruce M Simpson * Track inm filter state in terms of listener counts. 11038f002c6cSBruce M Simpson * If there are any exclusive listeners, stack-wide 11048f002c6cSBruce M Simpson * membership is exclusive. 11058f002c6cSBruce M Simpson * Otherwise, if only inclusive listeners, stack-wide is inclusive. 11068f002c6cSBruce M Simpson * If no listeners remain, state is undefined at t1, 11078f002c6cSBruce M Simpson * and the MLD lifecycle for this group should finish. 11088f002c6cSBruce M Simpson */ 11098f002c6cSBruce M Simpson if (inm->in6m_st[1].iss_ex > 0) { 11108f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: transition to EX", __func__); 11118f002c6cSBruce M Simpson inm->in6m_st[1].iss_fmode = MCAST_EXCLUDE; 11128f002c6cSBruce M Simpson } else if (inm->in6m_st[1].iss_in > 0) { 11138f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: transition to IN", __func__); 11148f002c6cSBruce M Simpson inm->in6m_st[1].iss_fmode = MCAST_INCLUDE; 11158f002c6cSBruce M Simpson } else { 11168f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: transition to UNDEF", __func__); 11178f002c6cSBruce M Simpson inm->in6m_st[1].iss_fmode = MCAST_UNDEFINED; 11188f002c6cSBruce M Simpson } 11198f002c6cSBruce M Simpson 11208f002c6cSBruce M Simpson /* Decrement ASM listener count on transition out of ASM mode. */ 11218f002c6cSBruce M Simpson if (imf->im6f_st[0] == MCAST_EXCLUDE && nsrc0 == 0) { 11228f002c6cSBruce M Simpson if ((imf->im6f_st[1] != MCAST_EXCLUDE) || 1123bd745936SEnji Cooper (imf->im6f_st[1] == MCAST_EXCLUDE && nsrc1 > 0)) { 11248f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: --asm on inm at t1", __func__); 11258f002c6cSBruce M Simpson --inm->in6m_st[1].iss_asm; 11268f002c6cSBruce M Simpson } 1127bd745936SEnji Cooper } 11288f002c6cSBruce M Simpson 11298f002c6cSBruce M Simpson /* Increment ASM listener count on transition to ASM mode. */ 11308f002c6cSBruce M Simpson if (imf->im6f_st[1] == MCAST_EXCLUDE && nsrc1 == 0) { 11318f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: asm++ on inm at t1", __func__); 11328f002c6cSBruce M Simpson inm->in6m_st[1].iss_asm++; 11338f002c6cSBruce M Simpson } 11348f002c6cSBruce M Simpson 11358f002c6cSBruce M Simpson CTR3(KTR_MLD, "%s: merged imf %p to inm %p", __func__, imf, inm); 11368f002c6cSBruce M Simpson in6m_print(inm); 11378f002c6cSBruce M Simpson 11388f002c6cSBruce M Simpson out_reap: 11398f002c6cSBruce M Simpson if (schanged > 0) { 11408f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: sources changed; reaping", __func__); 11418f002c6cSBruce M Simpson in6m_reap(inm); 11428f002c6cSBruce M Simpson } 11438f002c6cSBruce M Simpson return (error); 11448f002c6cSBruce M Simpson } 11458f002c6cSBruce M Simpson 11468f002c6cSBruce M Simpson /* 11478f002c6cSBruce M Simpson * Mark an in6_multi's filter set deltas as committed. 11488f002c6cSBruce M Simpson * Called by MLD after a state change has been enqueued. 11498f002c6cSBruce M Simpson */ 11508f002c6cSBruce M Simpson void 11518f002c6cSBruce M Simpson in6m_commit(struct in6_multi *inm) 11528f002c6cSBruce M Simpson { 11538f002c6cSBruce M Simpson struct ip6_msource *ims; 11548f002c6cSBruce M Simpson 11558f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: commit inm %p", __func__, inm); 11568f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: pre commit:", __func__); 11578f002c6cSBruce M Simpson in6m_print(inm); 11588f002c6cSBruce M Simpson 11598f002c6cSBruce M Simpson RB_FOREACH(ims, ip6_msource_tree, &inm->in6m_srcs) { 11608f002c6cSBruce M Simpson ims->im6s_st[0] = ims->im6s_st[1]; 11618f002c6cSBruce M Simpson } 11628f002c6cSBruce M Simpson inm->in6m_st[0] = inm->in6m_st[1]; 11638f002c6cSBruce M Simpson } 11648f002c6cSBruce M Simpson 11658f002c6cSBruce M Simpson /* 11668f002c6cSBruce M Simpson * Reap unreferenced nodes from an in6_multi's filter set. 11678f002c6cSBruce M Simpson */ 11688f002c6cSBruce M Simpson static void 11698f002c6cSBruce M Simpson in6m_reap(struct in6_multi *inm) 11708f002c6cSBruce M Simpson { 11718f002c6cSBruce M Simpson struct ip6_msource *ims, *tims; 11728f002c6cSBruce M Simpson 11738f002c6cSBruce M Simpson RB_FOREACH_SAFE(ims, ip6_msource_tree, &inm->in6m_srcs, tims) { 11748f002c6cSBruce M Simpson if (ims->im6s_st[0].ex > 0 || ims->im6s_st[0].in > 0 || 11758f002c6cSBruce M Simpson ims->im6s_st[1].ex > 0 || ims->im6s_st[1].in > 0 || 11768f002c6cSBruce M Simpson ims->im6s_stp != 0) 11778f002c6cSBruce M Simpson continue; 11788f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: free ims %p", __func__, ims); 11798f002c6cSBruce M Simpson RB_REMOVE(ip6_msource_tree, &inm->in6m_srcs, ims); 11808f002c6cSBruce M Simpson free(ims, M_IP6MSOURCE); 11818f002c6cSBruce M Simpson inm->in6m_nsrc--; 11828f002c6cSBruce M Simpson } 11838f002c6cSBruce M Simpson } 11848f002c6cSBruce M Simpson 11858f002c6cSBruce M Simpson /* 11868f002c6cSBruce M Simpson * Purge all source nodes from an in6_multi's filter set. 11878f002c6cSBruce M Simpson */ 11888f002c6cSBruce M Simpson static void 11898f002c6cSBruce M Simpson in6m_purge(struct in6_multi *inm) 11908f002c6cSBruce M Simpson { 11918f002c6cSBruce M Simpson struct ip6_msource *ims, *tims; 11928f002c6cSBruce M Simpson 11938f002c6cSBruce M Simpson RB_FOREACH_SAFE(ims, ip6_msource_tree, &inm->in6m_srcs, tims) { 11948f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: free ims %p", __func__, ims); 11958f002c6cSBruce M Simpson RB_REMOVE(ip6_msource_tree, &inm->in6m_srcs, ims); 11968f002c6cSBruce M Simpson free(ims, M_IP6MSOURCE); 11978f002c6cSBruce M Simpson inm->in6m_nsrc--; 11988f002c6cSBruce M Simpson } 11993c268b3aSAndrey V. Elsukov /* Free state-change requests that might be queued. */ 1200a99c84d4SGleb Smirnoff mbufq_drain(&inm->in6m_scq); 12018f002c6cSBruce M Simpson } 12028f002c6cSBruce M Simpson 12038f002c6cSBruce M Simpson /* 12048f002c6cSBruce M Simpson * Join a multicast address w/o sources. 12058f002c6cSBruce M Simpson * KAME compatibility entry point. 12068f002c6cSBruce M Simpson * 12078f002c6cSBruce M Simpson * SMPng: Assume no mc locks held by caller. 12088f002c6cSBruce M Simpson */ 12098f002c6cSBruce M Simpson int 1210f3e1324bSStephen Hurd in6_joingroup(struct ifnet *ifp, const struct in6_addr *mcaddr, 12118f002c6cSBruce M Simpson /*const*/ struct in6_mfilter *imf, struct in6_multi **pinm, 12128f002c6cSBruce M Simpson const int delay) 12138f002c6cSBruce M Simpson { 12148f002c6cSBruce M Simpson int error; 12158f002c6cSBruce M Simpson 12168f002c6cSBruce M Simpson IN6_MULTI_LOCK(); 1217f3e1324bSStephen Hurd error = in6_joingroup_locked(ifp, mcaddr, NULL, pinm, delay); 12188f002c6cSBruce M Simpson IN6_MULTI_UNLOCK(); 12198f002c6cSBruce M Simpson return (error); 12208f002c6cSBruce M Simpson } 12218f002c6cSBruce M Simpson 12228f002c6cSBruce M Simpson /* 12238f002c6cSBruce M Simpson * Join a multicast group; real entry point. 12248f002c6cSBruce M Simpson * 12258f002c6cSBruce M Simpson * Only preserves atomicity at inm level. 12268f002c6cSBruce M Simpson * NOTE: imf argument cannot be const due to sys/tree.h limitations. 12278f002c6cSBruce M Simpson * 12288f002c6cSBruce M Simpson * If the MLD downcall fails, the group is not joined, and an error 12298f002c6cSBruce M Simpson * code is returned. 12308f002c6cSBruce M Simpson */ 12318f002c6cSBruce M Simpson int 1232f3e1324bSStephen Hurd in6_joingroup_locked(struct ifnet *ifp, const struct in6_addr *mcaddr, 12338f002c6cSBruce M Simpson /*const*/ struct in6_mfilter *imf, struct in6_multi **pinm, 12348f002c6cSBruce M Simpson const int delay) 12358f002c6cSBruce M Simpson { 12368f002c6cSBruce M Simpson struct in6_mfilter timf; 12378f002c6cSBruce M Simpson struct in6_multi *inm; 1238f3e1324bSStephen Hurd struct ifmultiaddr *ifma; 12398f002c6cSBruce M Simpson int error; 12408f002c6cSBruce M Simpson #ifdef KTR 12418f002c6cSBruce M Simpson char ip6tbuf[INET6_ADDRSTRLEN]; 12428f002c6cSBruce M Simpson #endif 12438f002c6cSBruce M Simpson 124429dc7bc6SBruce M Simpson #ifdef INVARIANTS 124529dc7bc6SBruce M Simpson /* 124629dc7bc6SBruce M Simpson * Sanity: Check scope zone ID was set for ifp, if and 124729dc7bc6SBruce M Simpson * only if group is scoped to an interface. 124829dc7bc6SBruce M Simpson */ 124929dc7bc6SBruce M Simpson KASSERT(IN6_IS_ADDR_MULTICAST(mcaddr), 125029dc7bc6SBruce M Simpson ("%s: not a multicast address", __func__)); 125129dc7bc6SBruce M Simpson if (IN6_IS_ADDR_MC_LINKLOCAL(mcaddr) || 125229dc7bc6SBruce M Simpson IN6_IS_ADDR_MC_INTFACELOCAL(mcaddr)) { 125329dc7bc6SBruce M Simpson KASSERT(mcaddr->s6_addr16[1] != 0, 125429dc7bc6SBruce M Simpson ("%s: scope zone ID not set", __func__)); 125529dc7bc6SBruce M Simpson } 125629dc7bc6SBruce M Simpson #endif 125729dc7bc6SBruce M Simpson 12588f002c6cSBruce M Simpson IN6_MULTI_LOCK_ASSERT(); 1259f3e1324bSStephen Hurd IN6_MULTI_LIST_UNLOCK_ASSERT(); 12608f002c6cSBruce M Simpson 12618f002c6cSBruce M Simpson CTR4(KTR_MLD, "%s: join %s on %p(%s))", __func__, 1262e74966f6SAndrey V. Elsukov ip6_sprintf(ip6tbuf, mcaddr), ifp, if_name(ifp)); 12638f002c6cSBruce M Simpson 12648f002c6cSBruce M Simpson error = 0; 12658f002c6cSBruce M Simpson inm = NULL; 12668f002c6cSBruce M Simpson 12678f002c6cSBruce M Simpson /* 12688f002c6cSBruce M Simpson * If no imf was specified (i.e. kernel consumer), 12698f002c6cSBruce M Simpson * fake one up and assume it is an ASM join. 12708f002c6cSBruce M Simpson */ 12718f002c6cSBruce M Simpson if (imf == NULL) { 12728f002c6cSBruce M Simpson im6f_init(&timf, MCAST_UNDEFINED, MCAST_EXCLUDE); 12738f002c6cSBruce M Simpson imf = &timf; 12748f002c6cSBruce M Simpson } 1275f3e1324bSStephen Hurd error = in6_getmulti(ifp, mcaddr, &inm); 12768f002c6cSBruce M Simpson if (error) { 1277f3e1324bSStephen Hurd CTR1(KTR_MLD, "%s: in6_getmulti() failure", __func__); 12788f002c6cSBruce M Simpson return (error); 12798f002c6cSBruce M Simpson } 12808f002c6cSBruce M Simpson 1281f3e1324bSStephen Hurd IN6_MULTI_LIST_LOCK(); 12828f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: merge inm state", __func__); 12838f002c6cSBruce M Simpson error = in6m_merge(inm, imf); 12848f002c6cSBruce M Simpson if (error) { 12858f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: failed to merge inm state", __func__); 12868f002c6cSBruce M Simpson goto out_in6m_release; 12878f002c6cSBruce M Simpson } 12888f002c6cSBruce M Simpson 12898f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: doing mld downcall", __func__); 12908f002c6cSBruce M Simpson error = mld_change_state(inm, delay); 12918f002c6cSBruce M Simpson if (error) { 12928f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: failed to update source", __func__); 12938f002c6cSBruce M Simpson goto out_in6m_release; 12948f002c6cSBruce M Simpson } 12958f002c6cSBruce M Simpson 12968f002c6cSBruce M Simpson out_in6m_release: 12978f002c6cSBruce M Simpson if (error) { 12988f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: dropping ref on %p", __func__, inm); 1299f3e1324bSStephen Hurd IF_ADDR_RLOCK(ifp); 1300d7c5a620SMatt Macy CK_STAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 1301f3e1324bSStephen Hurd if (ifma->ifma_protospec == inm) { 1302f3e1324bSStephen Hurd ifma->ifma_protospec = NULL; 1303f3e1324bSStephen Hurd break; 1304f3e1324bSStephen Hurd } 1305f3e1324bSStephen Hurd } 1306f3e1324bSStephen Hurd in6m_release_deferred(inm); 1307f3e1324bSStephen Hurd IF_ADDR_RUNLOCK(ifp); 13088f002c6cSBruce M Simpson } else { 13098f002c6cSBruce M Simpson *pinm = inm; 13108f002c6cSBruce M Simpson } 1311f3e1324bSStephen Hurd IN6_MULTI_LIST_UNLOCK(); 13128f002c6cSBruce M Simpson return (error); 13138f002c6cSBruce M Simpson } 13148f002c6cSBruce M Simpson 13158f002c6cSBruce M Simpson /* 13168f002c6cSBruce M Simpson * Leave a multicast group; unlocked entry point. 13178f002c6cSBruce M Simpson */ 13188f002c6cSBruce M Simpson int 1319f3e1324bSStephen Hurd in6_leavegroup(struct in6_multi *inm, /*const*/ struct in6_mfilter *imf) 13208f002c6cSBruce M Simpson { 13218f002c6cSBruce M Simpson int error; 13228f002c6cSBruce M Simpson 13238f002c6cSBruce M Simpson IN6_MULTI_LOCK(); 1324f3e1324bSStephen Hurd error = in6_leavegroup_locked(inm, imf); 13258f002c6cSBruce M Simpson IN6_MULTI_UNLOCK(); 13268f002c6cSBruce M Simpson return (error); 13278f002c6cSBruce M Simpson } 13288f002c6cSBruce M Simpson 13298f002c6cSBruce M Simpson /* 13308f002c6cSBruce M Simpson * Leave a multicast group; real entry point. 13318f002c6cSBruce M Simpson * All source filters will be expunged. 13328f002c6cSBruce M Simpson * 13338f002c6cSBruce M Simpson * Only preserves atomicity at inm level. 13348f002c6cSBruce M Simpson * 13358f002c6cSBruce M Simpson * Holding the write lock for the INP which contains imf 13368f002c6cSBruce M Simpson * is highly advisable. We can't assert for it as imf does not 13378f002c6cSBruce M Simpson * contain a back-pointer to the owning inp. 13388f002c6cSBruce M Simpson * 13398f002c6cSBruce M Simpson * Note: This is not the same as in6m_release(*) as this function also 13408f002c6cSBruce M Simpson * makes a state change downcall into MLD. 13418f002c6cSBruce M Simpson */ 13428f002c6cSBruce M Simpson int 1343f3e1324bSStephen Hurd in6_leavegroup_locked(struct in6_multi *inm, /*const*/ struct in6_mfilter *imf) 13448f002c6cSBruce M Simpson { 13458f002c6cSBruce M Simpson struct in6_mfilter timf; 1346f3e1324bSStephen Hurd struct ifnet *ifp; 13478f002c6cSBruce M Simpson int error; 13488f002c6cSBruce M Simpson #ifdef KTR 13498f002c6cSBruce M Simpson char ip6tbuf[INET6_ADDRSTRLEN]; 13508f002c6cSBruce M Simpson #endif 13518f002c6cSBruce M Simpson 13528f002c6cSBruce M Simpson error = 0; 13538f002c6cSBruce M Simpson 13548f002c6cSBruce M Simpson IN6_MULTI_LOCK_ASSERT(); 13558f002c6cSBruce M Simpson 13568f002c6cSBruce M Simpson CTR5(KTR_MLD, "%s: leave inm %p, %s/%s, imf %p", __func__, 13578f002c6cSBruce M Simpson inm, ip6_sprintf(ip6tbuf, &inm->in6m_addr), 1358e74966f6SAndrey V. Elsukov (in6m_is_ifp_detached(inm) ? "null" : if_name(inm->in6m_ifp)), 13598f002c6cSBruce M Simpson imf); 13608f002c6cSBruce M Simpson 13618f002c6cSBruce M Simpson /* 13628f002c6cSBruce M Simpson * If no imf was specified (i.e. kernel consumer), 13638f002c6cSBruce M Simpson * fake one up and assume it is an ASM join. 13648f002c6cSBruce M Simpson */ 13658f002c6cSBruce M Simpson if (imf == NULL) { 13668f002c6cSBruce M Simpson im6f_init(&timf, MCAST_EXCLUDE, MCAST_UNDEFINED); 13678f002c6cSBruce M Simpson imf = &timf; 13688f002c6cSBruce M Simpson } 13698f002c6cSBruce M Simpson 13708f002c6cSBruce M Simpson /* 13718f002c6cSBruce M Simpson * Begin state merge transaction at MLD layer. 13728f002c6cSBruce M Simpson * 13738f002c6cSBruce M Simpson * As this particular invocation should not cause any memory 13748f002c6cSBruce M Simpson * to be allocated, and there is no opportunity to roll back 13758f002c6cSBruce M Simpson * the transaction, it MUST NOT fail. 13768f002c6cSBruce M Simpson */ 1377f3e1324bSStephen Hurd 1378f3e1324bSStephen Hurd ifp = inm->in6m_ifp; 1379f3e1324bSStephen Hurd IN6_MULTI_LIST_LOCK(); 13808f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: merge inm state", __func__); 13818f002c6cSBruce M Simpson error = in6m_merge(inm, imf); 13828f002c6cSBruce M Simpson KASSERT(error == 0, ("%s: failed to merge inm state", __func__)); 13838f002c6cSBruce M Simpson 13848f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: doing mld downcall", __func__); 13858f002c6cSBruce M Simpson error = mld_change_state(inm, 0); 13868f002c6cSBruce M Simpson if (error) 13878f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: failed mld downcall", __func__); 13888f002c6cSBruce M Simpson 13898f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: dropping ref on %p", __func__, inm); 1390f3e1324bSStephen Hurd if (ifp) 1391b6f6f880SMatt Macy IF_ADDR_WLOCK(ifp); 1392f3e1324bSStephen Hurd in6m_release_deferred(inm); 1393f3e1324bSStephen Hurd if (ifp) 1394b6f6f880SMatt Macy IF_ADDR_WUNLOCK(ifp); 1395f3e1324bSStephen Hurd IN6_MULTI_LIST_UNLOCK(); 13968f002c6cSBruce M Simpson 13978f002c6cSBruce M Simpson return (error); 13988f002c6cSBruce M Simpson } 13998f002c6cSBruce M Simpson 1400f3e1324bSStephen Hurd 14018f002c6cSBruce M Simpson /* 14028f002c6cSBruce M Simpson * Block or unblock an ASM multicast source on an inpcb. 14038f002c6cSBruce M Simpson * This implements the delta-based API described in RFC 3678. 14048f002c6cSBruce M Simpson * 14058f002c6cSBruce M Simpson * The delta-based API applies only to exclusive-mode memberships. 14068f002c6cSBruce M Simpson * An MLD downcall will be performed. 14078f002c6cSBruce M Simpson * 14088f002c6cSBruce M Simpson * SMPng: NOTE: Must take Giant as a join may create a new ifma. 14098f002c6cSBruce M Simpson * 14108f002c6cSBruce M Simpson * Return 0 if successful, otherwise return an appropriate error code. 14118f002c6cSBruce M Simpson */ 14128f002c6cSBruce M Simpson static int 14138f002c6cSBruce M Simpson in6p_block_unblock_source(struct inpcb *inp, struct sockopt *sopt) 14148f002c6cSBruce M Simpson { 14158f002c6cSBruce M Simpson struct group_source_req gsr; 14168f002c6cSBruce M Simpson sockunion_t *gsa, *ssa; 14178f002c6cSBruce M Simpson struct ifnet *ifp; 14188f002c6cSBruce M Simpson struct in6_mfilter *imf; 14198f002c6cSBruce M Simpson struct ip6_moptions *imo; 14208f002c6cSBruce M Simpson struct in6_msource *ims; 14218f002c6cSBruce M Simpson struct in6_multi *inm; 14228f002c6cSBruce M Simpson size_t idx; 14238f002c6cSBruce M Simpson uint16_t fmode; 14248f002c6cSBruce M Simpson int error, doblock; 14258f002c6cSBruce M Simpson #ifdef KTR 14268f002c6cSBruce M Simpson char ip6tbuf[INET6_ADDRSTRLEN]; 14278f002c6cSBruce M Simpson #endif 14288f002c6cSBruce M Simpson 14298f002c6cSBruce M Simpson ifp = NULL; 14308f002c6cSBruce M Simpson error = 0; 14318f002c6cSBruce M Simpson doblock = 0; 14328f002c6cSBruce M Simpson 14338f002c6cSBruce M Simpson memset(&gsr, 0, sizeof(struct group_source_req)); 14348f002c6cSBruce M Simpson gsa = (sockunion_t *)&gsr.gsr_group; 14358f002c6cSBruce M Simpson ssa = (sockunion_t *)&gsr.gsr_source; 14368f002c6cSBruce M Simpson 14378f002c6cSBruce M Simpson switch (sopt->sopt_name) { 14388f002c6cSBruce M Simpson case MCAST_BLOCK_SOURCE: 14398f002c6cSBruce M Simpson case MCAST_UNBLOCK_SOURCE: 14408f002c6cSBruce M Simpson error = sooptcopyin(sopt, &gsr, 14418f002c6cSBruce M Simpson sizeof(struct group_source_req), 14428f002c6cSBruce M Simpson sizeof(struct group_source_req)); 14438f002c6cSBruce M Simpson if (error) 14448f002c6cSBruce M Simpson return (error); 14458f002c6cSBruce M Simpson 14468f002c6cSBruce M Simpson if (gsa->sin6.sin6_family != AF_INET6 || 14478f002c6cSBruce M Simpson gsa->sin6.sin6_len != sizeof(struct sockaddr_in6)) 14488f002c6cSBruce M Simpson return (EINVAL); 14498f002c6cSBruce M Simpson 14508f002c6cSBruce M Simpson if (ssa->sin6.sin6_family != AF_INET6 || 14518f002c6cSBruce M Simpson ssa->sin6.sin6_len != sizeof(struct sockaddr_in6)) 14528f002c6cSBruce M Simpson return (EINVAL); 14538f002c6cSBruce M Simpson 14548f002c6cSBruce M Simpson if (gsr.gsr_interface == 0 || V_if_index < gsr.gsr_interface) 14558f002c6cSBruce M Simpson return (EADDRNOTAVAIL); 14568f002c6cSBruce M Simpson 14578f002c6cSBruce M Simpson ifp = ifnet_byindex(gsr.gsr_interface); 14588f002c6cSBruce M Simpson 14598f002c6cSBruce M Simpson if (sopt->sopt_name == MCAST_BLOCK_SOURCE) 14608f002c6cSBruce M Simpson doblock = 1; 14618f002c6cSBruce M Simpson break; 14628f002c6cSBruce M Simpson 14638f002c6cSBruce M Simpson default: 14648f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: unknown sopt_name %d", 14658f002c6cSBruce M Simpson __func__, sopt->sopt_name); 14668f002c6cSBruce M Simpson return (EOPNOTSUPP); 14678f002c6cSBruce M Simpson break; 14688f002c6cSBruce M Simpson } 14698f002c6cSBruce M Simpson 14708f002c6cSBruce M Simpson if (!IN6_IS_ADDR_MULTICAST(&gsa->sin6.sin6_addr)) 14718f002c6cSBruce M Simpson return (EINVAL); 14728f002c6cSBruce M Simpson 147329dc7bc6SBruce M Simpson (void)in6_setscope(&gsa->sin6.sin6_addr, ifp, NULL); 147429dc7bc6SBruce M Simpson 14758f002c6cSBruce M Simpson /* 14768f002c6cSBruce M Simpson * Check if we are actually a member of this group. 14778f002c6cSBruce M Simpson */ 14788f002c6cSBruce M Simpson imo = in6p_findmoptions(inp); 14798f002c6cSBruce M Simpson idx = im6o_match_group(imo, ifp, &gsa->sa); 14808f002c6cSBruce M Simpson if (idx == -1 || imo->im6o_mfilters == NULL) { 14818f002c6cSBruce M Simpson error = EADDRNOTAVAIL; 14828f002c6cSBruce M Simpson goto out_in6p_locked; 14838f002c6cSBruce M Simpson } 14848f002c6cSBruce M Simpson 14858f002c6cSBruce M Simpson KASSERT(imo->im6o_mfilters != NULL, 14868f002c6cSBruce M Simpson ("%s: im6o_mfilters not allocated", __func__)); 14878f002c6cSBruce M Simpson imf = &imo->im6o_mfilters[idx]; 14888f002c6cSBruce M Simpson inm = imo->im6o_membership[idx]; 14898f002c6cSBruce M Simpson 14908f002c6cSBruce M Simpson /* 14918f002c6cSBruce M Simpson * Attempting to use the delta-based API on an 14928f002c6cSBruce M Simpson * non exclusive-mode membership is an error. 14938f002c6cSBruce M Simpson */ 14948f002c6cSBruce M Simpson fmode = imf->im6f_st[0]; 14958f002c6cSBruce M Simpson if (fmode != MCAST_EXCLUDE) { 14968f002c6cSBruce M Simpson error = EINVAL; 14978f002c6cSBruce M Simpson goto out_in6p_locked; 14988f002c6cSBruce M Simpson } 14998f002c6cSBruce M Simpson 15008f002c6cSBruce M Simpson /* 15018f002c6cSBruce M Simpson * Deal with error cases up-front: 15028f002c6cSBruce M Simpson * Asked to block, but already blocked; or 15038f002c6cSBruce M Simpson * Asked to unblock, but nothing to unblock. 15048f002c6cSBruce M Simpson * If adding a new block entry, allocate it. 15058f002c6cSBruce M Simpson */ 15068f002c6cSBruce M Simpson ims = im6o_match_source(imo, idx, &ssa->sa); 15078f002c6cSBruce M Simpson if ((ims != NULL && doblock) || (ims == NULL && !doblock)) { 15088f002c6cSBruce M Simpson CTR3(KTR_MLD, "%s: source %s %spresent", __func__, 15098f002c6cSBruce M Simpson ip6_sprintf(ip6tbuf, &ssa->sin6.sin6_addr), 15108f002c6cSBruce M Simpson doblock ? "" : "not "); 15118f002c6cSBruce M Simpson error = EADDRNOTAVAIL; 15128f002c6cSBruce M Simpson goto out_in6p_locked; 15138f002c6cSBruce M Simpson } 15148f002c6cSBruce M Simpson 15158f002c6cSBruce M Simpson INP_WLOCK_ASSERT(inp); 15168f002c6cSBruce M Simpson 15178f002c6cSBruce M Simpson /* 15188f002c6cSBruce M Simpson * Begin state merge transaction at socket layer. 15198f002c6cSBruce M Simpson */ 15208f002c6cSBruce M Simpson if (doblock) { 15218f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: %s source", __func__, "block"); 15228f002c6cSBruce M Simpson ims = im6f_graft(imf, fmode, &ssa->sin6); 15238f002c6cSBruce M Simpson if (ims == NULL) 15248f002c6cSBruce M Simpson error = ENOMEM; 15258f002c6cSBruce M Simpson } else { 15268f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: %s source", __func__, "allow"); 15278f002c6cSBruce M Simpson error = im6f_prune(imf, &ssa->sin6); 15288f002c6cSBruce M Simpson } 15298f002c6cSBruce M Simpson 15308f002c6cSBruce M Simpson if (error) { 15318f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: merge imf state failed", __func__); 15328f002c6cSBruce M Simpson goto out_im6f_rollback; 15338f002c6cSBruce M Simpson } 15348f002c6cSBruce M Simpson 15358f002c6cSBruce M Simpson /* 15368f002c6cSBruce M Simpson * Begin state merge transaction at MLD layer. 15378f002c6cSBruce M Simpson */ 1538f3e1324bSStephen Hurd IN6_MULTI_LIST_LOCK(); 15398f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: merge inm state", __func__); 15408f002c6cSBruce M Simpson error = in6m_merge(inm, imf); 15414fd91336SAndrey V. Elsukov if (error) 15428f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: failed to merge inm state", __func__); 15434fd91336SAndrey V. Elsukov else { 15448f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: doing mld downcall", __func__); 15458f002c6cSBruce M Simpson error = mld_change_state(inm, 0); 15468f002c6cSBruce M Simpson if (error) 15478f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: failed mld downcall", __func__); 15484fd91336SAndrey V. Elsukov } 15498f002c6cSBruce M Simpson 1550f3e1324bSStephen Hurd IN6_MULTI_LIST_UNLOCK(); 15518f002c6cSBruce M Simpson 15528f002c6cSBruce M Simpson out_im6f_rollback: 15538f002c6cSBruce M Simpson if (error) 15548f002c6cSBruce M Simpson im6f_rollback(imf); 15558f002c6cSBruce M Simpson else 15568f002c6cSBruce M Simpson im6f_commit(imf); 15578f002c6cSBruce M Simpson 15588f002c6cSBruce M Simpson im6f_reap(imf); 15598f002c6cSBruce M Simpson 15608f002c6cSBruce M Simpson out_in6p_locked: 15618f002c6cSBruce M Simpson INP_WUNLOCK(inp); 15628f002c6cSBruce M Simpson return (error); 15638f002c6cSBruce M Simpson } 15648f002c6cSBruce M Simpson 15658f002c6cSBruce M Simpson /* 15668f002c6cSBruce M Simpson * Given an inpcb, return its multicast options structure pointer. Accepts 15678f002c6cSBruce M Simpson * an unlocked inpcb pointer, but will return it locked. May sleep. 15688f002c6cSBruce M Simpson * 15698f002c6cSBruce M Simpson * SMPng: NOTE: Potentially calls malloc(M_WAITOK) with Giant held. 15708f002c6cSBruce M Simpson * SMPng: NOTE: Returns with the INP write lock held. 15718f002c6cSBruce M Simpson */ 15728f002c6cSBruce M Simpson static struct ip6_moptions * 15738f002c6cSBruce M Simpson in6p_findmoptions(struct inpcb *inp) 15748f002c6cSBruce M Simpson { 15758f002c6cSBruce M Simpson struct ip6_moptions *imo; 15768f002c6cSBruce M Simpson struct in6_multi **immp; 15778f002c6cSBruce M Simpson struct in6_mfilter *imfp; 15788f002c6cSBruce M Simpson size_t idx; 15798f002c6cSBruce M Simpson 15808f002c6cSBruce M Simpson INP_WLOCK(inp); 15818f002c6cSBruce M Simpson if (inp->in6p_moptions != NULL) 15828f002c6cSBruce M Simpson return (inp->in6p_moptions); 15838f002c6cSBruce M Simpson 15848f002c6cSBruce M Simpson INP_WUNLOCK(inp); 15858f002c6cSBruce M Simpson 15868f002c6cSBruce M Simpson imo = malloc(sizeof(*imo), M_IP6MOPTS, M_WAITOK); 15878f002c6cSBruce M Simpson immp = malloc(sizeof(*immp) * IPV6_MIN_MEMBERSHIPS, M_IP6MOPTS, 15888f002c6cSBruce M Simpson M_WAITOK | M_ZERO); 15898f002c6cSBruce M Simpson imfp = malloc(sizeof(struct in6_mfilter) * IPV6_MIN_MEMBERSHIPS, 15908f002c6cSBruce M Simpson M_IN6MFILTER, M_WAITOK); 15918f002c6cSBruce M Simpson 15928f002c6cSBruce M Simpson imo->im6o_multicast_ifp = NULL; 15938f002c6cSBruce M Simpson imo->im6o_multicast_hlim = V_ip6_defmcasthlim; 15948f002c6cSBruce M Simpson imo->im6o_multicast_loop = in6_mcast_loop; 15958f002c6cSBruce M Simpson imo->im6o_num_memberships = 0; 15968f002c6cSBruce M Simpson imo->im6o_max_memberships = IPV6_MIN_MEMBERSHIPS; 15978f002c6cSBruce M Simpson imo->im6o_membership = immp; 15988f002c6cSBruce M Simpson 15998f002c6cSBruce M Simpson /* Initialize per-group source filters. */ 16008f002c6cSBruce M Simpson for (idx = 0; idx < IPV6_MIN_MEMBERSHIPS; idx++) 16018f002c6cSBruce M Simpson im6f_init(&imfp[idx], MCAST_UNDEFINED, MCAST_EXCLUDE); 16028f002c6cSBruce M Simpson imo->im6o_mfilters = imfp; 16038f002c6cSBruce M Simpson 16048f002c6cSBruce M Simpson INP_WLOCK(inp); 16058f002c6cSBruce M Simpson if (inp->in6p_moptions != NULL) { 16068f002c6cSBruce M Simpson free(imfp, M_IN6MFILTER); 16078f002c6cSBruce M Simpson free(immp, M_IP6MOPTS); 16088f002c6cSBruce M Simpson free(imo, M_IP6MOPTS); 16098f002c6cSBruce M Simpson return (inp->in6p_moptions); 16108f002c6cSBruce M Simpson } 16118f002c6cSBruce M Simpson inp->in6p_moptions = imo; 16128f002c6cSBruce M Simpson return (imo); 16138f002c6cSBruce M Simpson } 16148f002c6cSBruce M Simpson 16158f002c6cSBruce M Simpson /* 16168f002c6cSBruce M Simpson * Discard the IPv6 multicast options (and source filters). 16178f002c6cSBruce M Simpson * 16188f002c6cSBruce M Simpson * SMPng: NOTE: assumes INP write lock is held. 1619cb6bb230SMatt Macy * 1620cb6bb230SMatt Macy * XXX can all be safely deferred to epoch_call 1621cb6bb230SMatt Macy * 16228f002c6cSBruce M Simpson */ 1623cb6bb230SMatt Macy 1624cb6bb230SMatt Macy static void 1625cb6bb230SMatt Macy inp_gcmoptions(epoch_context_t ctx) 16268f002c6cSBruce M Simpson { 1627cb6bb230SMatt Macy struct ip6_moptions *imo; 16288f002c6cSBruce M Simpson struct in6_mfilter *imf; 16298f002c6cSBruce M Simpson size_t idx, nmships; 16308f002c6cSBruce M Simpson 1631cb6bb230SMatt Macy imo = __containerof(ctx, struct ip6_moptions, imo6_epoch_ctx); 16328f002c6cSBruce M Simpson 16338f002c6cSBruce M Simpson nmships = imo->im6o_num_memberships; 16348f002c6cSBruce M Simpson for (idx = 0; idx < nmships; ++idx) { 16358f002c6cSBruce M Simpson imf = imo->im6o_mfilters ? &imo->im6o_mfilters[idx] : NULL; 16368f002c6cSBruce M Simpson if (imf) 16378f002c6cSBruce M Simpson im6f_leave(imf); 16388f002c6cSBruce M Simpson /* XXX this will thrash the lock(s) */ 1639f3e1324bSStephen Hurd (void)in6_leavegroup(imo->im6o_membership[idx], imf); 16408f002c6cSBruce M Simpson if (imf) 16418f002c6cSBruce M Simpson im6f_purge(imf); 16428f002c6cSBruce M Simpson } 16438f002c6cSBruce M Simpson 16448f002c6cSBruce M Simpson if (imo->im6o_mfilters) 16458f002c6cSBruce M Simpson free(imo->im6o_mfilters, M_IN6MFILTER); 16468f002c6cSBruce M Simpson free(imo->im6o_membership, M_IP6MOPTS); 16478f002c6cSBruce M Simpson free(imo, M_IP6MOPTS); 1648cb6bb230SMatt Macy } 1649cb6bb230SMatt Macy 1650cb6bb230SMatt Macy void 1651cb6bb230SMatt Macy ip6_freemoptions(struct ip6_moptions *imo) 1652cb6bb230SMatt Macy { 1653cb6bb230SMatt Macy if (imo == NULL) 1654cb6bb230SMatt Macy return; 1655cb6bb230SMatt Macy epoch_call(net_epoch_preempt, &imo->imo6_epoch_ctx, inp_gcmoptions); 16568f002c6cSBruce M Simpson } 16578f002c6cSBruce M Simpson 16588f002c6cSBruce M Simpson /* 16598f002c6cSBruce M Simpson * Atomically get source filters on a socket for an IPv6 multicast group. 16608f002c6cSBruce M Simpson * Called with INP lock held; returns with lock released. 16618f002c6cSBruce M Simpson */ 16628f002c6cSBruce M Simpson static int 16638f002c6cSBruce M Simpson in6p_get_source_filters(struct inpcb *inp, struct sockopt *sopt) 16648f002c6cSBruce M Simpson { 16658f002c6cSBruce M Simpson struct __msfilterreq msfr; 16668f002c6cSBruce M Simpson sockunion_t *gsa; 16678f002c6cSBruce M Simpson struct ifnet *ifp; 16688f002c6cSBruce M Simpson struct ip6_moptions *imo; 16698f002c6cSBruce M Simpson struct in6_mfilter *imf; 16708f002c6cSBruce M Simpson struct ip6_msource *ims; 16718f002c6cSBruce M Simpson struct in6_msource *lims; 16728f002c6cSBruce M Simpson struct sockaddr_in6 *psin; 16738f002c6cSBruce M Simpson struct sockaddr_storage *ptss; 16748f002c6cSBruce M Simpson struct sockaddr_storage *tss; 16758f002c6cSBruce M Simpson int error; 16768f002c6cSBruce M Simpson size_t idx, nsrcs, ncsrcs; 16778f002c6cSBruce M Simpson 16788f002c6cSBruce M Simpson INP_WLOCK_ASSERT(inp); 16798f002c6cSBruce M Simpson 16808f002c6cSBruce M Simpson imo = inp->in6p_moptions; 16818f002c6cSBruce M Simpson KASSERT(imo != NULL, ("%s: null ip6_moptions", __func__)); 16828f002c6cSBruce M Simpson 16838f002c6cSBruce M Simpson INP_WUNLOCK(inp); 16848f002c6cSBruce M Simpson 16858f002c6cSBruce M Simpson error = sooptcopyin(sopt, &msfr, sizeof(struct __msfilterreq), 16868f002c6cSBruce M Simpson sizeof(struct __msfilterreq)); 16878f002c6cSBruce M Simpson if (error) 16888f002c6cSBruce M Simpson return (error); 16898f002c6cSBruce M Simpson 169029dc7bc6SBruce M Simpson if (msfr.msfr_group.ss_family != AF_INET6 || 169129dc7bc6SBruce M Simpson msfr.msfr_group.ss_len != sizeof(struct sockaddr_in6)) 16928f002c6cSBruce M Simpson return (EINVAL); 16938f002c6cSBruce M Simpson 169429dc7bc6SBruce M Simpson gsa = (sockunion_t *)&msfr.msfr_group; 169529dc7bc6SBruce M Simpson if (!IN6_IS_ADDR_MULTICAST(&gsa->sin6.sin6_addr)) 169629dc7bc6SBruce M Simpson return (EINVAL); 169729dc7bc6SBruce M Simpson 169829dc7bc6SBruce M Simpson if (msfr.msfr_ifindex == 0 || V_if_index < msfr.msfr_ifindex) 169929dc7bc6SBruce M Simpson return (EADDRNOTAVAIL); 17008f002c6cSBruce M Simpson ifp = ifnet_byindex(msfr.msfr_ifindex); 17018f002c6cSBruce M Simpson if (ifp == NULL) 170229dc7bc6SBruce M Simpson return (EADDRNOTAVAIL); 170329dc7bc6SBruce M Simpson (void)in6_setscope(&gsa->sin6.sin6_addr, ifp, NULL); 17048f002c6cSBruce M Simpson 17058f002c6cSBruce M Simpson INP_WLOCK(inp); 17068f002c6cSBruce M Simpson 17078f002c6cSBruce M Simpson /* 17088f002c6cSBruce M Simpson * Lookup group on the socket. 17098f002c6cSBruce M Simpson */ 17108f002c6cSBruce M Simpson idx = im6o_match_group(imo, ifp, &gsa->sa); 17118f002c6cSBruce M Simpson if (idx == -1 || imo->im6o_mfilters == NULL) { 17128f002c6cSBruce M Simpson INP_WUNLOCK(inp); 17138f002c6cSBruce M Simpson return (EADDRNOTAVAIL); 17148f002c6cSBruce M Simpson } 17158f002c6cSBruce M Simpson imf = &imo->im6o_mfilters[idx]; 17168f002c6cSBruce M Simpson 17178f002c6cSBruce M Simpson /* 17188f002c6cSBruce M Simpson * Ignore memberships which are in limbo. 17198f002c6cSBruce M Simpson */ 17208f002c6cSBruce M Simpson if (imf->im6f_st[1] == MCAST_UNDEFINED) { 17218f002c6cSBruce M Simpson INP_WUNLOCK(inp); 17228f002c6cSBruce M Simpson return (EAGAIN); 17238f002c6cSBruce M Simpson } 17248f002c6cSBruce M Simpson msfr.msfr_fmode = imf->im6f_st[1]; 17258f002c6cSBruce M Simpson 17268f002c6cSBruce M Simpson /* 17278f002c6cSBruce M Simpson * If the user specified a buffer, copy out the source filter 17288f002c6cSBruce M Simpson * entries to userland gracefully. 17298f002c6cSBruce M Simpson * We only copy out the number of entries which userland 17308f002c6cSBruce M Simpson * has asked for, but we always tell userland how big the 17318f002c6cSBruce M Simpson * buffer really needs to be. 17328f002c6cSBruce M Simpson */ 1733acde2476SXin LI if (msfr.msfr_nsrcs > in6_mcast_maxsocksrc) 1734acde2476SXin LI msfr.msfr_nsrcs = in6_mcast_maxsocksrc; 17358f002c6cSBruce M Simpson tss = NULL; 17368f002c6cSBruce M Simpson if (msfr.msfr_srcs != NULL && msfr.msfr_nsrcs > 0) { 17378f002c6cSBruce M Simpson tss = malloc(sizeof(struct sockaddr_storage) * msfr.msfr_nsrcs, 17388f002c6cSBruce M Simpson M_TEMP, M_NOWAIT | M_ZERO); 17398f002c6cSBruce M Simpson if (tss == NULL) { 17408f002c6cSBruce M Simpson INP_WUNLOCK(inp); 17418f002c6cSBruce M Simpson return (ENOBUFS); 17428f002c6cSBruce M Simpson } 17438f002c6cSBruce M Simpson } 17448f002c6cSBruce M Simpson 17458f002c6cSBruce M Simpson /* 17468f002c6cSBruce M Simpson * Count number of sources in-mode at t0. 17478f002c6cSBruce M Simpson * If buffer space exists and remains, copy out source entries. 17488f002c6cSBruce M Simpson */ 17498f002c6cSBruce M Simpson nsrcs = msfr.msfr_nsrcs; 17508f002c6cSBruce M Simpson ncsrcs = 0; 17518f002c6cSBruce M Simpson ptss = tss; 17528f002c6cSBruce M Simpson RB_FOREACH(ims, ip6_msource_tree, &imf->im6f_sources) { 17538f002c6cSBruce M Simpson lims = (struct in6_msource *)ims; 17548f002c6cSBruce M Simpson if (lims->im6sl_st[0] == MCAST_UNDEFINED || 17558f002c6cSBruce M Simpson lims->im6sl_st[0] != imf->im6f_st[0]) 17568f002c6cSBruce M Simpson continue; 17578f002c6cSBruce M Simpson ++ncsrcs; 17588f002c6cSBruce M Simpson if (tss != NULL && nsrcs > 0) { 17598f002c6cSBruce M Simpson psin = (struct sockaddr_in6 *)ptss; 17608f002c6cSBruce M Simpson psin->sin6_family = AF_INET6; 17618f002c6cSBruce M Simpson psin->sin6_len = sizeof(struct sockaddr_in6); 17628f002c6cSBruce M Simpson psin->sin6_addr = lims->im6s_addr; 17638f002c6cSBruce M Simpson psin->sin6_port = 0; 17648f002c6cSBruce M Simpson --nsrcs; 17658f002c6cSBruce M Simpson ++ptss; 17668f002c6cSBruce M Simpson } 17678f002c6cSBruce M Simpson } 17688f002c6cSBruce M Simpson 17698f002c6cSBruce M Simpson INP_WUNLOCK(inp); 17708f002c6cSBruce M Simpson 17718f002c6cSBruce M Simpson if (tss != NULL) { 17728f002c6cSBruce M Simpson error = copyout(tss, msfr.msfr_srcs, 17738f002c6cSBruce M Simpson sizeof(struct sockaddr_storage) * msfr.msfr_nsrcs); 17748f002c6cSBruce M Simpson free(tss, M_TEMP); 17758f002c6cSBruce M Simpson if (error) 17768f002c6cSBruce M Simpson return (error); 17778f002c6cSBruce M Simpson } 17788f002c6cSBruce M Simpson 17798f002c6cSBruce M Simpson msfr.msfr_nsrcs = ncsrcs; 17808f002c6cSBruce M Simpson error = sooptcopyout(sopt, &msfr, sizeof(struct __msfilterreq)); 17818f002c6cSBruce M Simpson 17828f002c6cSBruce M Simpson return (error); 17838f002c6cSBruce M Simpson } 17848f002c6cSBruce M Simpson 17858f002c6cSBruce M Simpson /* 17868f002c6cSBruce M Simpson * Return the IP multicast options in response to user getsockopt(). 17878f002c6cSBruce M Simpson */ 17888f002c6cSBruce M Simpson int 17898f002c6cSBruce M Simpson ip6_getmoptions(struct inpcb *inp, struct sockopt *sopt) 17908f002c6cSBruce M Simpson { 179133cde130SBruce M Simpson struct ip6_moptions *im6o; 179233cde130SBruce M Simpson int error; 179333cde130SBruce M Simpson u_int optval; 17948f002c6cSBruce M Simpson 17958f002c6cSBruce M Simpson INP_WLOCK(inp); 179633cde130SBruce M Simpson im6o = inp->in6p_moptions; 17978f002c6cSBruce M Simpson /* 17988f002c6cSBruce M Simpson * If socket is neither of type SOCK_RAW or SOCK_DGRAM, 17998f002c6cSBruce M Simpson * or is a divert socket, reject it. 18008f002c6cSBruce M Simpson */ 18018f002c6cSBruce M Simpson if (inp->inp_socket->so_proto->pr_protocol == IPPROTO_DIVERT || 18028f002c6cSBruce M Simpson (inp->inp_socket->so_proto->pr_type != SOCK_RAW && 18038f002c6cSBruce M Simpson inp->inp_socket->so_proto->pr_type != SOCK_DGRAM)) { 18048f002c6cSBruce M Simpson INP_WUNLOCK(inp); 18058f002c6cSBruce M Simpson return (EOPNOTSUPP); 18068f002c6cSBruce M Simpson } 18078f002c6cSBruce M Simpson 18088f002c6cSBruce M Simpson error = 0; 18098f002c6cSBruce M Simpson switch (sopt->sopt_name) { 18108f002c6cSBruce M Simpson case IPV6_MULTICAST_IF: 181133cde130SBruce M Simpson if (im6o == NULL || im6o->im6o_multicast_ifp == NULL) { 18128f002c6cSBruce M Simpson optval = 0; 18138f002c6cSBruce M Simpson } else { 181433cde130SBruce M Simpson optval = im6o->im6o_multicast_ifp->if_index; 18158f002c6cSBruce M Simpson } 18168f002c6cSBruce M Simpson INP_WUNLOCK(inp); 181733cde130SBruce M Simpson error = sooptcopyout(sopt, &optval, sizeof(u_int)); 18188f002c6cSBruce M Simpson break; 18198f002c6cSBruce M Simpson 18208f002c6cSBruce M Simpson case IPV6_MULTICAST_HOPS: 182133cde130SBruce M Simpson if (im6o == NULL) 182233cde130SBruce M Simpson optval = V_ip6_defmcasthlim; 18238f002c6cSBruce M Simpson else 182408907004SBjoern A. Zeeb optval = im6o->im6o_multicast_hlim; 18258f002c6cSBruce M Simpson INP_WUNLOCK(inp); 18268f002c6cSBruce M Simpson error = sooptcopyout(sopt, &optval, sizeof(u_int)); 18278f002c6cSBruce M Simpson break; 18288f002c6cSBruce M Simpson 18298f002c6cSBruce M Simpson case IPV6_MULTICAST_LOOP: 183033cde130SBruce M Simpson if (im6o == NULL) 183133cde130SBruce M Simpson optval = in6_mcast_loop; /* XXX VIMAGE */ 18328f002c6cSBruce M Simpson else 183333cde130SBruce M Simpson optval = im6o->im6o_multicast_loop; 18348f002c6cSBruce M Simpson INP_WUNLOCK(inp); 18358f002c6cSBruce M Simpson error = sooptcopyout(sopt, &optval, sizeof(u_int)); 18368f002c6cSBruce M Simpson break; 18378f002c6cSBruce M Simpson 18388f002c6cSBruce M Simpson case IPV6_MSFILTER: 183933cde130SBruce M Simpson if (im6o == NULL) { 18408f002c6cSBruce M Simpson error = EADDRNOTAVAIL; 18418f002c6cSBruce M Simpson INP_WUNLOCK(inp); 18428f002c6cSBruce M Simpson } else { 18438f002c6cSBruce M Simpson error = in6p_get_source_filters(inp, sopt); 18448f002c6cSBruce M Simpson } 18458f002c6cSBruce M Simpson break; 18468f002c6cSBruce M Simpson 18478f002c6cSBruce M Simpson default: 18488f002c6cSBruce M Simpson INP_WUNLOCK(inp); 18498f002c6cSBruce M Simpson error = ENOPROTOOPT; 18508f002c6cSBruce M Simpson break; 18518f002c6cSBruce M Simpson } 18528f002c6cSBruce M Simpson 18538f002c6cSBruce M Simpson INP_UNLOCK_ASSERT(inp); 18548f002c6cSBruce M Simpson 18558f002c6cSBruce M Simpson return (error); 18568f002c6cSBruce M Simpson } 18578f002c6cSBruce M Simpson 18588f002c6cSBruce M Simpson /* 185933cde130SBruce M Simpson * Look up the ifnet to use for a multicast group membership, 186033cde130SBruce M Simpson * given the address of an IPv6 group. 186133cde130SBruce M Simpson * 186233cde130SBruce M Simpson * This routine exists to support legacy IPv6 multicast applications. 186333cde130SBruce M Simpson * 186433cde130SBruce M Simpson * If inp is non-NULL, use this socket's current FIB number for any 186533cde130SBruce M Simpson * required FIB lookup. Look up the group address in the unicast FIB, 186633cde130SBruce M Simpson * and use its ifp; usually, this points to the default next-hop. 186733cde130SBruce M Simpson * If the FIB lookup fails, return NULL. 186833cde130SBruce M Simpson * 186933cde130SBruce M Simpson * FUTURE: Support multiple forwarding tables for IPv6. 187033cde130SBruce M Simpson * 187133cde130SBruce M Simpson * Returns NULL if no ifp could be found. 187233cde130SBruce M Simpson */ 187333cde130SBruce M Simpson static struct ifnet * 187481d5d46bSBjoern A. Zeeb in6p_lookup_mcast_ifp(const struct inpcb *in6p, 187533cde130SBruce M Simpson const struct sockaddr_in6 *gsin6) 187633cde130SBruce M Simpson { 18779977be4aSAlexander V. Chernikov struct nhop6_basic nh6; 18789977be4aSAlexander V. Chernikov struct in6_addr dst; 18799977be4aSAlexander V. Chernikov uint32_t scopeid; 18809977be4aSAlexander V. Chernikov uint32_t fibnum; 188133cde130SBruce M Simpson 188233cde130SBruce M Simpson KASSERT(in6p->inp_vflag & INP_IPV6, 188333cde130SBruce M Simpson ("%s: not INP_IPV6 inpcb", __func__)); 188433cde130SBruce M Simpson KASSERT(gsin6->sin6_family == AF_INET6, 188533cde130SBruce M Simpson ("%s: not AF_INET6 group", __func__)); 188633cde130SBruce M Simpson 18879977be4aSAlexander V. Chernikov in6_splitscope(&gsin6->sin6_addr, &dst, &scopeid); 18889977be4aSAlexander V. Chernikov fibnum = in6p ? in6p->inp_inc.inc_fibnum : RT_DEFAULT_FIB; 18899977be4aSAlexander V. Chernikov if (fib6_lookup_nh_basic(fibnum, &dst, scopeid, 0, 0, &nh6) != 0) 18909977be4aSAlexander V. Chernikov return (NULL); 189133cde130SBruce M Simpson 18929977be4aSAlexander V. Chernikov return (nh6.nh_ifp); 189333cde130SBruce M Simpson } 189433cde130SBruce M Simpson 189533cde130SBruce M Simpson /* 18968f002c6cSBruce M Simpson * Join an IPv6 multicast group, possibly with a source. 189733cde130SBruce M Simpson * 189833cde130SBruce M Simpson * FIXME: The KAME use of the unspecified address (::) 189933cde130SBruce M Simpson * to join *all* multicast groups is currently unsupported. 19008f002c6cSBruce M Simpson */ 19018f002c6cSBruce M Simpson static int 19028f002c6cSBruce M Simpson in6p_join_group(struct inpcb *inp, struct sockopt *sopt) 19038f002c6cSBruce M Simpson { 19048f002c6cSBruce M Simpson struct group_source_req gsr; 19058f002c6cSBruce M Simpson sockunion_t *gsa, *ssa; 19068f002c6cSBruce M Simpson struct ifnet *ifp; 19078f002c6cSBruce M Simpson struct in6_mfilter *imf; 19088f002c6cSBruce M Simpson struct ip6_moptions *imo; 19098f002c6cSBruce M Simpson struct in6_multi *inm; 19108f002c6cSBruce M Simpson struct in6_msource *lims; 19118f002c6cSBruce M Simpson size_t idx; 19128f002c6cSBruce M Simpson int error, is_new; 19138f002c6cSBruce M Simpson 19148f002c6cSBruce M Simpson ifp = NULL; 19158f002c6cSBruce M Simpson imf = NULL; 19161f81c2b6SBruce M Simpson lims = NULL; 19178f002c6cSBruce M Simpson error = 0; 19188f002c6cSBruce M Simpson is_new = 0; 19198f002c6cSBruce M Simpson 19208f002c6cSBruce M Simpson memset(&gsr, 0, sizeof(struct group_source_req)); 19218f002c6cSBruce M Simpson gsa = (sockunion_t *)&gsr.gsr_group; 19228f002c6cSBruce M Simpson gsa->ss.ss_family = AF_UNSPEC; 19238f002c6cSBruce M Simpson ssa = (sockunion_t *)&gsr.gsr_source; 19248f002c6cSBruce M Simpson ssa->ss.ss_family = AF_UNSPEC; 19258f002c6cSBruce M Simpson 192629dc7bc6SBruce M Simpson /* 192729dc7bc6SBruce M Simpson * Chew everything into struct group_source_req. 192829dc7bc6SBruce M Simpson * Overwrite the port field if present, as the sockaddr 192929dc7bc6SBruce M Simpson * being copied in may be matched with a binary comparison. 193029dc7bc6SBruce M Simpson * Ignore passed-in scope ID. 193129dc7bc6SBruce M Simpson */ 19328f002c6cSBruce M Simpson switch (sopt->sopt_name) { 19338f002c6cSBruce M Simpson case IPV6_JOIN_GROUP: { 19348f002c6cSBruce M Simpson struct ipv6_mreq mreq; 19358f002c6cSBruce M Simpson 19368f002c6cSBruce M Simpson error = sooptcopyin(sopt, &mreq, sizeof(struct ipv6_mreq), 19378f002c6cSBruce M Simpson sizeof(struct ipv6_mreq)); 19388f002c6cSBruce M Simpson if (error) 19398f002c6cSBruce M Simpson return (error); 19408f002c6cSBruce M Simpson 19418f002c6cSBruce M Simpson gsa->sin6.sin6_family = AF_INET6; 19428f002c6cSBruce M Simpson gsa->sin6.sin6_len = sizeof(struct sockaddr_in6); 19438f002c6cSBruce M Simpson gsa->sin6.sin6_addr = mreq.ipv6mr_multiaddr; 19448f002c6cSBruce M Simpson 194533cde130SBruce M Simpson if (mreq.ipv6mr_interface == 0) { 194633cde130SBruce M Simpson ifp = in6p_lookup_mcast_ifp(inp, &gsa->sin6); 194733cde130SBruce M Simpson } else { 1948010c2b81SBjoern A. Zeeb if (V_if_index < mreq.ipv6mr_interface) 194933cde130SBruce M Simpson return (EADDRNOTAVAIL); 19508f002c6cSBruce M Simpson ifp = ifnet_byindex(mreq.ipv6mr_interface); 195133cde130SBruce M Simpson } 19528f002c6cSBruce M Simpson CTR3(KTR_MLD, "%s: ipv6mr_interface = %d, ifp = %p", 19538f002c6cSBruce M Simpson __func__, mreq.ipv6mr_interface, ifp); 19548f002c6cSBruce M Simpson } break; 19558f002c6cSBruce M Simpson 19568f002c6cSBruce M Simpson case MCAST_JOIN_GROUP: 19578f002c6cSBruce M Simpson case MCAST_JOIN_SOURCE_GROUP: 19588f002c6cSBruce M Simpson if (sopt->sopt_name == MCAST_JOIN_GROUP) { 19598f002c6cSBruce M Simpson error = sooptcopyin(sopt, &gsr, 19608f002c6cSBruce M Simpson sizeof(struct group_req), 19618f002c6cSBruce M Simpson sizeof(struct group_req)); 19628f002c6cSBruce M Simpson } else if (sopt->sopt_name == MCAST_JOIN_SOURCE_GROUP) { 19638f002c6cSBruce M Simpson error = sooptcopyin(sopt, &gsr, 19648f002c6cSBruce M Simpson sizeof(struct group_source_req), 19658f002c6cSBruce M Simpson sizeof(struct group_source_req)); 19668f002c6cSBruce M Simpson } 19678f002c6cSBruce M Simpson if (error) 19688f002c6cSBruce M Simpson return (error); 19698f002c6cSBruce M Simpson 19708f002c6cSBruce M Simpson if (gsa->sin6.sin6_family != AF_INET6 || 19718f002c6cSBruce M Simpson gsa->sin6.sin6_len != sizeof(struct sockaddr_in6)) 19728f002c6cSBruce M Simpson return (EINVAL); 19738f002c6cSBruce M Simpson 19748f002c6cSBruce M Simpson if (sopt->sopt_name == MCAST_JOIN_SOURCE_GROUP) { 19758f002c6cSBruce M Simpson if (ssa->sin6.sin6_family != AF_INET6 || 19768f002c6cSBruce M Simpson ssa->sin6.sin6_len != sizeof(struct sockaddr_in6)) 19778f002c6cSBruce M Simpson return (EINVAL); 197829dc7bc6SBruce M Simpson if (IN6_IS_ADDR_MULTICAST(&ssa->sin6.sin6_addr)) 197929dc7bc6SBruce M Simpson return (EINVAL); 198029dc7bc6SBruce M Simpson /* 198129dc7bc6SBruce M Simpson * TODO: Validate embedded scope ID in source 198229dc7bc6SBruce M Simpson * list entry against passed-in ifp, if and only 198329dc7bc6SBruce M Simpson * if source list filter entry is iface or node local. 198429dc7bc6SBruce M Simpson */ 198529dc7bc6SBruce M Simpson in6_clearscope(&ssa->sin6.sin6_addr); 19868f002c6cSBruce M Simpson ssa->sin6.sin6_port = 0; 198729dc7bc6SBruce M Simpson ssa->sin6.sin6_scope_id = 0; 19888f002c6cSBruce M Simpson } 19898f002c6cSBruce M Simpson 19908f002c6cSBruce M Simpson if (gsr.gsr_interface == 0 || V_if_index < gsr.gsr_interface) 19918f002c6cSBruce M Simpson return (EADDRNOTAVAIL); 19928f002c6cSBruce M Simpson ifp = ifnet_byindex(gsr.gsr_interface); 19938f002c6cSBruce M Simpson break; 19948f002c6cSBruce M Simpson 19958f002c6cSBruce M Simpson default: 19968f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: unknown sopt_name %d", 19978f002c6cSBruce M Simpson __func__, sopt->sopt_name); 19988f002c6cSBruce M Simpson return (EOPNOTSUPP); 19998f002c6cSBruce M Simpson break; 20008f002c6cSBruce M Simpson } 20018f002c6cSBruce M Simpson 20028f002c6cSBruce M Simpson if (!IN6_IS_ADDR_MULTICAST(&gsa->sin6.sin6_addr)) 20038f002c6cSBruce M Simpson return (EINVAL); 20048f002c6cSBruce M Simpson 20058f002c6cSBruce M Simpson if (ifp == NULL || (ifp->if_flags & IFF_MULTICAST) == 0) 20068f002c6cSBruce M Simpson return (EADDRNOTAVAIL); 20078f002c6cSBruce M Simpson 200829dc7bc6SBruce M Simpson gsa->sin6.sin6_port = 0; 200929dc7bc6SBruce M Simpson gsa->sin6.sin6_scope_id = 0; 201029dc7bc6SBruce M Simpson 201133cde130SBruce M Simpson /* 201229dc7bc6SBruce M Simpson * Always set the scope zone ID on memberships created from userland. 201329dc7bc6SBruce M Simpson * Use the passed-in ifp to do this. 201429dc7bc6SBruce M Simpson * XXX The in6_setscope() return value is meaningless. 201529dc7bc6SBruce M Simpson * XXX SCOPE6_LOCK() is taken by in6_setscope(). 201633cde130SBruce M Simpson */ 201729dc7bc6SBruce M Simpson (void)in6_setscope(&gsa->sin6.sin6_addr, ifp, NULL); 201833cde130SBruce M Simpson 20198f002c6cSBruce M Simpson imo = in6p_findmoptions(inp); 20208f002c6cSBruce M Simpson idx = im6o_match_group(imo, ifp, &gsa->sa); 20218f002c6cSBruce M Simpson if (idx == -1) { 20228f002c6cSBruce M Simpson is_new = 1; 20238f002c6cSBruce M Simpson } else { 20248f002c6cSBruce M Simpson inm = imo->im6o_membership[idx]; 20258f002c6cSBruce M Simpson imf = &imo->im6o_mfilters[idx]; 20261ee6b058SBruce M Simpson if (ssa->ss.ss_family != AF_UNSPEC) { 20271ee6b058SBruce M Simpson /* 20281ee6b058SBruce M Simpson * MCAST_JOIN_SOURCE_GROUP on an exclusive membership 20291ee6b058SBruce M Simpson * is an error. On an existing inclusive membership, 20301ee6b058SBruce M Simpson * it just adds the source to the filter list. 20311ee6b058SBruce M Simpson */ 20321ee6b058SBruce M Simpson if (imf->im6f_st[1] != MCAST_INCLUDE) { 20338f002c6cSBruce M Simpson error = EINVAL; 20348f002c6cSBruce M Simpson goto out_in6p_locked; 20358f002c6cSBruce M Simpson } 20361f81c2b6SBruce M Simpson /* 20371f81c2b6SBruce M Simpson * Throw out duplicates. 20381f81c2b6SBruce M Simpson * 20391f81c2b6SBruce M Simpson * XXX FIXME: This makes a naive assumption that 20401f81c2b6SBruce M Simpson * even if entries exist for *ssa in this imf, 20411f81c2b6SBruce M Simpson * they will be rejected as dupes, even if they 20421f81c2b6SBruce M Simpson * are not valid in the current mode (in-mode). 20431f81c2b6SBruce M Simpson * 20441f81c2b6SBruce M Simpson * in6_msource is transactioned just as for anything 20451f81c2b6SBruce M Simpson * else in SSM -- but note naive use of in6m_graft() 20461f81c2b6SBruce M Simpson * below for allocating new filter entries. 20471f81c2b6SBruce M Simpson * 20481f81c2b6SBruce M Simpson * This is only an issue if someone mixes the 20491f81c2b6SBruce M Simpson * full-state SSM API with the delta-based API, 20501f81c2b6SBruce M Simpson * which is discouraged in the relevant RFCs. 20511f81c2b6SBruce M Simpson */ 20528f002c6cSBruce M Simpson lims = im6o_match_source(imo, idx, &ssa->sa); 20531f81c2b6SBruce M Simpson if (lims != NULL /*&& 20541f81c2b6SBruce M Simpson lims->im6sl_st[1] == MCAST_INCLUDE*/) { 20558f002c6cSBruce M Simpson error = EADDRNOTAVAIL; 20568f002c6cSBruce M Simpson goto out_in6p_locked; 20578f002c6cSBruce M Simpson } 20581ee6b058SBruce M Simpson } else { 20591ee6b058SBruce M Simpson /* 2060604a60d1SBruce M Simpson * MCAST_JOIN_GROUP alone, on any existing membership, 2061604a60d1SBruce M Simpson * is rejected, to stop the same inpcb tying up 2062604a60d1SBruce M Simpson * multiple refs to the in_multi. 2063604a60d1SBruce M Simpson * On an existing inclusive membership, this is also 2064604a60d1SBruce M Simpson * an error; if you want to change filter mode, 2065604a60d1SBruce M Simpson * you must use the userland API setsourcefilter(). 2066604a60d1SBruce M Simpson * XXX We don't reject this for imf in UNDEFINED 2067604a60d1SBruce M Simpson * state at t1, because allocation of a filter 2068604a60d1SBruce M Simpson * is atomic with allocation of a membership. 20691ee6b058SBruce M Simpson */ 20701ee6b058SBruce M Simpson error = EINVAL; 20711ee6b058SBruce M Simpson goto out_in6p_locked; 20721ee6b058SBruce M Simpson } 20731ee6b058SBruce M Simpson } 20748f002c6cSBruce M Simpson 20758f002c6cSBruce M Simpson /* 20768f002c6cSBruce M Simpson * Begin state merge transaction at socket layer. 20778f002c6cSBruce M Simpson */ 20788f002c6cSBruce M Simpson INP_WLOCK_ASSERT(inp); 20798f002c6cSBruce M Simpson 20808f002c6cSBruce M Simpson if (is_new) { 20818f002c6cSBruce M Simpson if (imo->im6o_num_memberships == imo->im6o_max_memberships) { 20828f002c6cSBruce M Simpson error = im6o_grow(imo); 20838f002c6cSBruce M Simpson if (error) 20848f002c6cSBruce M Simpson goto out_in6p_locked; 20858f002c6cSBruce M Simpson } 20868f002c6cSBruce M Simpson /* 20878f002c6cSBruce M Simpson * Allocate the new slot upfront so we can deal with 20888f002c6cSBruce M Simpson * grafting the new source filter in same code path 20898f002c6cSBruce M Simpson * as for join-source on existing membership. 20908f002c6cSBruce M Simpson */ 20918f002c6cSBruce M Simpson idx = imo->im6o_num_memberships; 20928f002c6cSBruce M Simpson imo->im6o_membership[idx] = NULL; 20938f002c6cSBruce M Simpson imo->im6o_num_memberships++; 20948f002c6cSBruce M Simpson KASSERT(imo->im6o_mfilters != NULL, 20958f002c6cSBruce M Simpson ("%s: im6f_mfilters vector was not allocated", __func__)); 20968f002c6cSBruce M Simpson imf = &imo->im6o_mfilters[idx]; 20978f002c6cSBruce M Simpson KASSERT(RB_EMPTY(&imf->im6f_sources), 20988f002c6cSBruce M Simpson ("%s: im6f_sources not empty", __func__)); 20998f002c6cSBruce M Simpson } 21008f002c6cSBruce M Simpson 21018f002c6cSBruce M Simpson /* 21028f002c6cSBruce M Simpson * Graft new source into filter list for this inpcb's 21038f002c6cSBruce M Simpson * membership of the group. The in6_multi may not have 21041ee6b058SBruce M Simpson * been allocated yet if this is a new membership, however, 21051ee6b058SBruce M Simpson * the in_mfilter slot will be allocated and must be initialized. 2106604a60d1SBruce M Simpson * 2107604a60d1SBruce M Simpson * Note: Grafting of exclusive mode filters doesn't happen 2108604a60d1SBruce M Simpson * in this path. 21091f81c2b6SBruce M Simpson * XXX: Should check for non-NULL lims (node exists but may 21101f81c2b6SBruce M Simpson * not be in-mode) for interop with full-state API. 21118f002c6cSBruce M Simpson */ 21128f002c6cSBruce M Simpson if (ssa->ss.ss_family != AF_UNSPEC) { 21138f002c6cSBruce M Simpson /* Membership starts in IN mode */ 21148f002c6cSBruce M Simpson if (is_new) { 21158f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: new join w/source", __func__); 21168f002c6cSBruce M Simpson im6f_init(imf, MCAST_UNDEFINED, MCAST_INCLUDE); 21178f002c6cSBruce M Simpson } else { 21188f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: %s source", __func__, "allow"); 21198f002c6cSBruce M Simpson } 21208f002c6cSBruce M Simpson lims = im6f_graft(imf, MCAST_INCLUDE, &ssa->sin6); 21218f002c6cSBruce M Simpson if (lims == NULL) { 21228f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: merge imf state failed", 21238f002c6cSBruce M Simpson __func__); 21248f002c6cSBruce M Simpson error = ENOMEM; 21258f002c6cSBruce M Simpson goto out_im6o_free; 21268f002c6cSBruce M Simpson } 21271ee6b058SBruce M Simpson } else { 21281ee6b058SBruce M Simpson /* No address specified; Membership starts in EX mode */ 21291ee6b058SBruce M Simpson if (is_new) { 21301ee6b058SBruce M Simpson CTR1(KTR_MLD, "%s: new join w/o source", __func__); 21311ee6b058SBruce M Simpson im6f_init(imf, MCAST_UNDEFINED, MCAST_EXCLUDE); 21321ee6b058SBruce M Simpson } 21338f002c6cSBruce M Simpson } 21348f002c6cSBruce M Simpson 21358f002c6cSBruce M Simpson /* 21368f002c6cSBruce M Simpson * Begin state merge transaction at MLD layer. 21378f002c6cSBruce M Simpson */ 2138f3e1324bSStephen Hurd in_pcbref(inp); 2139f3e1324bSStephen Hurd INP_WUNLOCK(inp); 21408f002c6cSBruce M Simpson IN6_MULTI_LOCK(); 21418f002c6cSBruce M Simpson 21428f002c6cSBruce M Simpson if (is_new) { 2143f3e1324bSStephen Hurd error = in6_joingroup_locked(ifp, &gsa->sin6.sin6_addr, imf, 21448f002c6cSBruce M Simpson &inm, 0); 21454fd91336SAndrey V. Elsukov if (error) { 21464fd91336SAndrey V. Elsukov IN6_MULTI_UNLOCK(); 21478f002c6cSBruce M Simpson goto out_im6o_free; 21484fd91336SAndrey V. Elsukov } 21498f002c6cSBruce M Simpson imo->im6o_membership[idx] = inm; 21508f002c6cSBruce M Simpson } else { 21518f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: merge inm state", __func__); 2152f3e1324bSStephen Hurd IN6_MULTI_LIST_LOCK(); 21538f002c6cSBruce M Simpson error = in6m_merge(inm, imf); 21544fd91336SAndrey V. Elsukov if (error) 21558f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: failed to merge inm state", 21568f002c6cSBruce M Simpson __func__); 21574fd91336SAndrey V. Elsukov else { 21588f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: doing mld downcall", __func__); 21598f002c6cSBruce M Simpson error = mld_change_state(inm, 0); 21604fd91336SAndrey V. Elsukov if (error) 21618f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: failed mld downcall", 21628f002c6cSBruce M Simpson __func__); 21638f002c6cSBruce M Simpson } 2164f3e1324bSStephen Hurd IN6_MULTI_LIST_UNLOCK(); 21658f002c6cSBruce M Simpson } 21668f002c6cSBruce M Simpson 21678f002c6cSBruce M Simpson IN6_MULTI_UNLOCK(); 2168f3e1324bSStephen Hurd INP_WLOCK(inp); 2169f3e1324bSStephen Hurd if (in_pcbrele_wlocked(inp)) 2170f3e1324bSStephen Hurd return (ENXIO); 21718f002c6cSBruce M Simpson if (error) { 21728f002c6cSBruce M Simpson im6f_rollback(imf); 21738f002c6cSBruce M Simpson if (is_new) 21748f002c6cSBruce M Simpson im6f_purge(imf); 21758f002c6cSBruce M Simpson else 21768f002c6cSBruce M Simpson im6f_reap(imf); 21778f002c6cSBruce M Simpson } else { 21788f002c6cSBruce M Simpson im6f_commit(imf); 21798f002c6cSBruce M Simpson } 21808f002c6cSBruce M Simpson 21818f002c6cSBruce M Simpson out_im6o_free: 21828f002c6cSBruce M Simpson if (error && is_new) { 21838f002c6cSBruce M Simpson imo->im6o_membership[idx] = NULL; 21848f002c6cSBruce M Simpson --imo->im6o_num_memberships; 21858f002c6cSBruce M Simpson } 21868f002c6cSBruce M Simpson 21878f002c6cSBruce M Simpson out_in6p_locked: 21888f002c6cSBruce M Simpson INP_WUNLOCK(inp); 21898f002c6cSBruce M Simpson return (error); 21908f002c6cSBruce M Simpson } 21918f002c6cSBruce M Simpson 21928f002c6cSBruce M Simpson /* 21938f002c6cSBruce M Simpson * Leave an IPv6 multicast group on an inpcb, possibly with a source. 21948f002c6cSBruce M Simpson */ 21958f002c6cSBruce M Simpson static int 21968f002c6cSBruce M Simpson in6p_leave_group(struct inpcb *inp, struct sockopt *sopt) 21978f002c6cSBruce M Simpson { 219829dc7bc6SBruce M Simpson struct ipv6_mreq mreq; 21998f002c6cSBruce M Simpson struct group_source_req gsr; 22008f002c6cSBruce M Simpson sockunion_t *gsa, *ssa; 22018f002c6cSBruce M Simpson struct ifnet *ifp; 22028f002c6cSBruce M Simpson struct in6_mfilter *imf; 22038f002c6cSBruce M Simpson struct ip6_moptions *imo; 22048f002c6cSBruce M Simpson struct in6_msource *ims; 22058f002c6cSBruce M Simpson struct in6_multi *inm; 220629dc7bc6SBruce M Simpson uint32_t ifindex; 22078f002c6cSBruce M Simpson size_t idx; 22088f002c6cSBruce M Simpson int error, is_final; 22098f002c6cSBruce M Simpson #ifdef KTR 22108f002c6cSBruce M Simpson char ip6tbuf[INET6_ADDRSTRLEN]; 22118f002c6cSBruce M Simpson #endif 22128f002c6cSBruce M Simpson 22138f002c6cSBruce M Simpson ifp = NULL; 221429dc7bc6SBruce M Simpson ifindex = 0; 22158f002c6cSBruce M Simpson error = 0; 22168f002c6cSBruce M Simpson is_final = 1; 22178f002c6cSBruce M Simpson 22188f002c6cSBruce M Simpson memset(&gsr, 0, sizeof(struct group_source_req)); 22198f002c6cSBruce M Simpson gsa = (sockunion_t *)&gsr.gsr_group; 22208f002c6cSBruce M Simpson gsa->ss.ss_family = AF_UNSPEC; 22218f002c6cSBruce M Simpson ssa = (sockunion_t *)&gsr.gsr_source; 22228f002c6cSBruce M Simpson ssa->ss.ss_family = AF_UNSPEC; 22238f002c6cSBruce M Simpson 222429dc7bc6SBruce M Simpson /* 222529dc7bc6SBruce M Simpson * Chew everything passed in up into a struct group_source_req 222629dc7bc6SBruce M Simpson * as that is easier to process. 222729dc7bc6SBruce M Simpson * Note: Any embedded scope ID in the multicast group passed 222829dc7bc6SBruce M Simpson * in by userland is ignored, the interface index is the recommended 222929dc7bc6SBruce M Simpson * mechanism to specify an interface; see below. 223029dc7bc6SBruce M Simpson */ 22318f002c6cSBruce M Simpson switch (sopt->sopt_name) { 223229dc7bc6SBruce M Simpson case IPV6_LEAVE_GROUP: 22338f002c6cSBruce M Simpson error = sooptcopyin(sopt, &mreq, sizeof(struct ipv6_mreq), 22348f002c6cSBruce M Simpson sizeof(struct ipv6_mreq)); 22358f002c6cSBruce M Simpson if (error) 22368f002c6cSBruce M Simpson return (error); 22378f002c6cSBruce M Simpson gsa->sin6.sin6_family = AF_INET6; 22388f002c6cSBruce M Simpson gsa->sin6.sin6_len = sizeof(struct sockaddr_in6); 22398f002c6cSBruce M Simpson gsa->sin6.sin6_addr = mreq.ipv6mr_multiaddr; 224029dc7bc6SBruce M Simpson gsa->sin6.sin6_port = 0; 224129dc7bc6SBruce M Simpson gsa->sin6.sin6_scope_id = 0; 224229dc7bc6SBruce M Simpson ifindex = mreq.ipv6mr_interface; 224329dc7bc6SBruce M Simpson break; 22448f002c6cSBruce M Simpson 22458f002c6cSBruce M Simpson case MCAST_LEAVE_GROUP: 22468f002c6cSBruce M Simpson case MCAST_LEAVE_SOURCE_GROUP: 22478f002c6cSBruce M Simpson if (sopt->sopt_name == MCAST_LEAVE_GROUP) { 22488f002c6cSBruce M Simpson error = sooptcopyin(sopt, &gsr, 22498f002c6cSBruce M Simpson sizeof(struct group_req), 22508f002c6cSBruce M Simpson sizeof(struct group_req)); 22518f002c6cSBruce M Simpson } else if (sopt->sopt_name == MCAST_LEAVE_SOURCE_GROUP) { 22528f002c6cSBruce M Simpson error = sooptcopyin(sopt, &gsr, 22538f002c6cSBruce M Simpson sizeof(struct group_source_req), 22548f002c6cSBruce M Simpson sizeof(struct group_source_req)); 22558f002c6cSBruce M Simpson } 22568f002c6cSBruce M Simpson if (error) 22578f002c6cSBruce M Simpson return (error); 22588f002c6cSBruce M Simpson 22598f002c6cSBruce M Simpson if (gsa->sin6.sin6_family != AF_INET6 || 22608f002c6cSBruce M Simpson gsa->sin6.sin6_len != sizeof(struct sockaddr_in6)) 22618f002c6cSBruce M Simpson return (EINVAL); 22628f002c6cSBruce M Simpson if (sopt->sopt_name == MCAST_LEAVE_SOURCE_GROUP) { 22638f002c6cSBruce M Simpson if (ssa->sin6.sin6_family != AF_INET6 || 22648f002c6cSBruce M Simpson ssa->sin6.sin6_len != sizeof(struct sockaddr_in6)) 22658f002c6cSBruce M Simpson return (EINVAL); 226629dc7bc6SBruce M Simpson if (IN6_IS_ADDR_MULTICAST(&ssa->sin6.sin6_addr)) 226729dc7bc6SBruce M Simpson return (EINVAL); 226829dc7bc6SBruce M Simpson /* 226929dc7bc6SBruce M Simpson * TODO: Validate embedded scope ID in source 227029dc7bc6SBruce M Simpson * list entry against passed-in ifp, if and only 227129dc7bc6SBruce M Simpson * if source list filter entry is iface or node local. 227229dc7bc6SBruce M Simpson */ 227329dc7bc6SBruce M Simpson in6_clearscope(&ssa->sin6.sin6_addr); 22748f002c6cSBruce M Simpson } 227529dc7bc6SBruce M Simpson gsa->sin6.sin6_port = 0; 227629dc7bc6SBruce M Simpson gsa->sin6.sin6_scope_id = 0; 227729dc7bc6SBruce M Simpson ifindex = gsr.gsr_interface; 22788f002c6cSBruce M Simpson break; 22798f002c6cSBruce M Simpson 22808f002c6cSBruce M Simpson default: 22818f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: unknown sopt_name %d", 22828f002c6cSBruce M Simpson __func__, sopt->sopt_name); 22838f002c6cSBruce M Simpson return (EOPNOTSUPP); 22848f002c6cSBruce M Simpson break; 22858f002c6cSBruce M Simpson } 22868f002c6cSBruce M Simpson 22878f002c6cSBruce M Simpson if (!IN6_IS_ADDR_MULTICAST(&gsa->sin6.sin6_addr)) 22888f002c6cSBruce M Simpson return (EINVAL); 22898f002c6cSBruce M Simpson 229033cde130SBruce M Simpson /* 229129dc7bc6SBruce M Simpson * Validate interface index if provided. If no interface index 229229dc7bc6SBruce M Simpson * was provided separately, attempt to look the membership up 229329dc7bc6SBruce M Simpson * from the default scope as a last resort to disambiguate 229429dc7bc6SBruce M Simpson * the membership we are being asked to leave. 229529dc7bc6SBruce M Simpson * XXX SCOPE6 lock potentially taken here. 229633cde130SBruce M Simpson */ 229729dc7bc6SBruce M Simpson if (ifindex != 0) { 2298010c2b81SBjoern A. Zeeb if (V_if_index < ifindex) 229929dc7bc6SBruce M Simpson return (EADDRNOTAVAIL); 230029dc7bc6SBruce M Simpson ifp = ifnet_byindex(ifindex); 230129dc7bc6SBruce M Simpson if (ifp == NULL) 230229dc7bc6SBruce M Simpson return (EADDRNOTAVAIL); 230329dc7bc6SBruce M Simpson (void)in6_setscope(&gsa->sin6.sin6_addr, ifp, NULL); 230429dc7bc6SBruce M Simpson } else { 230529dc7bc6SBruce M Simpson error = sa6_embedscope(&gsa->sin6, V_ip6_use_defzone); 230629dc7bc6SBruce M Simpson if (error) 230729dc7bc6SBruce M Simpson return (EADDRNOTAVAIL); 230829dc7bc6SBruce M Simpson /* 2309b36c89e5SBruce M Simpson * Some badly behaved applications don't pass an ifindex 2310b36c89e5SBruce M Simpson * or a scope ID, which is an API violation. In this case, 2311b36c89e5SBruce M Simpson * perform a lookup as per a v6 join. 2312b36c89e5SBruce M Simpson * 231329dc7bc6SBruce M Simpson * XXX For now, stomp on zone ID for the corner case. 231429dc7bc6SBruce M Simpson * This is not the 'KAME way', but we need to see the ifp 231529dc7bc6SBruce M Simpson * directly until such time as this implementation is 231629dc7bc6SBruce M Simpson * refactored, assuming the scope IDs are the way to go. 231729dc7bc6SBruce M Simpson */ 231829dc7bc6SBruce M Simpson ifindex = ntohs(gsa->sin6.sin6_addr.s6_addr16[1]); 2319b36c89e5SBruce M Simpson if (ifindex == 0) { 2320b36c89e5SBruce M Simpson CTR2(KTR_MLD, "%s: warning: no ifindex, looking up " 2321b36c89e5SBruce M Simpson "ifp for group %s.", __func__, 2322b36c89e5SBruce M Simpson ip6_sprintf(ip6tbuf, &gsa->sin6.sin6_addr)); 2323b36c89e5SBruce M Simpson ifp = in6p_lookup_mcast_ifp(inp, &gsa->sin6); 2324b36c89e5SBruce M Simpson } else { 232529dc7bc6SBruce M Simpson ifp = ifnet_byindex(ifindex); 2326b36c89e5SBruce M Simpson } 232729dc7bc6SBruce M Simpson if (ifp == NULL) 232829dc7bc6SBruce M Simpson return (EADDRNOTAVAIL); 232929dc7bc6SBruce M Simpson } 233029dc7bc6SBruce M Simpson 233129dc7bc6SBruce M Simpson CTR2(KTR_MLD, "%s: ifp = %p", __func__, ifp); 233229dc7bc6SBruce M Simpson KASSERT(ifp != NULL, ("%s: ifp did not resolve", __func__)); 233333cde130SBruce M Simpson 23348f002c6cSBruce M Simpson /* 23358f002c6cSBruce M Simpson * Find the membership in the membership array. 23368f002c6cSBruce M Simpson */ 23378f002c6cSBruce M Simpson imo = in6p_findmoptions(inp); 23388f002c6cSBruce M Simpson idx = im6o_match_group(imo, ifp, &gsa->sa); 23398f002c6cSBruce M Simpson if (idx == -1) { 23408f002c6cSBruce M Simpson error = EADDRNOTAVAIL; 23418f002c6cSBruce M Simpson goto out_in6p_locked; 23428f002c6cSBruce M Simpson } 23438f002c6cSBruce M Simpson inm = imo->im6o_membership[idx]; 23448f002c6cSBruce M Simpson imf = &imo->im6o_mfilters[idx]; 23458f002c6cSBruce M Simpson 23468f002c6cSBruce M Simpson if (ssa->ss.ss_family != AF_UNSPEC) 23478f002c6cSBruce M Simpson is_final = 0; 23488f002c6cSBruce M Simpson 23498f002c6cSBruce M Simpson /* 23508f002c6cSBruce M Simpson * Begin state merge transaction at socket layer. 23518f002c6cSBruce M Simpson */ 23528f002c6cSBruce M Simpson INP_WLOCK_ASSERT(inp); 23538f002c6cSBruce M Simpson 23548f002c6cSBruce M Simpson /* 23558f002c6cSBruce M Simpson * If we were instructed only to leave a given source, do so. 23568f002c6cSBruce M Simpson * MCAST_LEAVE_SOURCE_GROUP is only valid for inclusive memberships. 23578f002c6cSBruce M Simpson */ 23588f002c6cSBruce M Simpson if (is_final) { 23598f002c6cSBruce M Simpson im6f_leave(imf); 23608f002c6cSBruce M Simpson } else { 23618f002c6cSBruce M Simpson if (imf->im6f_st[0] == MCAST_EXCLUDE) { 23628f002c6cSBruce M Simpson error = EADDRNOTAVAIL; 23638f002c6cSBruce M Simpson goto out_in6p_locked; 23648f002c6cSBruce M Simpson } 23658f002c6cSBruce M Simpson ims = im6o_match_source(imo, idx, &ssa->sa); 23668f002c6cSBruce M Simpson if (ims == NULL) { 23678f002c6cSBruce M Simpson CTR3(KTR_MLD, "%s: source %p %spresent", __func__, 23688f002c6cSBruce M Simpson ip6_sprintf(ip6tbuf, &ssa->sin6.sin6_addr), 23698f002c6cSBruce M Simpson "not "); 23708f002c6cSBruce M Simpson error = EADDRNOTAVAIL; 23718f002c6cSBruce M Simpson goto out_in6p_locked; 23728f002c6cSBruce M Simpson } 23738f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: %s source", __func__, "block"); 23748f002c6cSBruce M Simpson error = im6f_prune(imf, &ssa->sin6); 23758f002c6cSBruce M Simpson if (error) { 23768f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: merge imf state failed", 23778f002c6cSBruce M Simpson __func__); 23788f002c6cSBruce M Simpson goto out_in6p_locked; 23798f002c6cSBruce M Simpson } 23808f002c6cSBruce M Simpson } 23818f002c6cSBruce M Simpson 23828f002c6cSBruce M Simpson /* 23838f002c6cSBruce M Simpson * Begin state merge transaction at MLD layer. 23848f002c6cSBruce M Simpson */ 2385b69888c2SStephen Hurd in_pcbref(inp); 2386b69888c2SStephen Hurd INP_WUNLOCK(inp); 23878f002c6cSBruce M Simpson IN6_MULTI_LOCK(); 23888f002c6cSBruce M Simpson 23898f002c6cSBruce M Simpson if (is_final) { 23908f002c6cSBruce M Simpson /* 23918f002c6cSBruce M Simpson * Give up the multicast address record to which 23928f002c6cSBruce M Simpson * the membership points. 23938f002c6cSBruce M Simpson */ 2394f3e1324bSStephen Hurd (void)in6_leavegroup_locked(inm, imf); 23958f002c6cSBruce M Simpson } else { 23968f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: merge inm state", __func__); 2397f3e1324bSStephen Hurd IN6_MULTI_LIST_LOCK(); 23988f002c6cSBruce M Simpson error = in6m_merge(inm, imf); 23994fd91336SAndrey V. Elsukov if (error) 24008f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: failed to merge inm state", 24018f002c6cSBruce M Simpson __func__); 24024fd91336SAndrey V. Elsukov else { 24038f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: doing mld downcall", __func__); 24048f002c6cSBruce M Simpson error = mld_change_state(inm, 0); 24054fd91336SAndrey V. Elsukov if (error) 24068f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: failed mld downcall", 24078f002c6cSBruce M Simpson __func__); 24088f002c6cSBruce M Simpson } 2409f3e1324bSStephen Hurd IN6_MULTI_LIST_UNLOCK(); 24108f002c6cSBruce M Simpson } 24118f002c6cSBruce M Simpson 24128f002c6cSBruce M Simpson IN6_MULTI_UNLOCK(); 2413b69888c2SStephen Hurd INP_WLOCK(inp); 2414b69888c2SStephen Hurd if (in_pcbrele_wlocked(inp)) 2415b69888c2SStephen Hurd return (ENXIO); 24168f002c6cSBruce M Simpson 24178f002c6cSBruce M Simpson if (error) 24188f002c6cSBruce M Simpson im6f_rollback(imf); 24198f002c6cSBruce M Simpson else 24208f002c6cSBruce M Simpson im6f_commit(imf); 24218f002c6cSBruce M Simpson 24228f002c6cSBruce M Simpson im6f_reap(imf); 24238f002c6cSBruce M Simpson 24248f002c6cSBruce M Simpson if (is_final) { 24258f002c6cSBruce M Simpson /* Remove the gap in the membership array. */ 242657a9feeaSBruce M Simpson for (++idx; idx < imo->im6o_num_memberships; ++idx) { 24278f002c6cSBruce M Simpson imo->im6o_membership[idx-1] = imo->im6o_membership[idx]; 242857a9feeaSBruce M Simpson imo->im6o_mfilters[idx-1] = imo->im6o_mfilters[idx]; 242957a9feeaSBruce M Simpson } 24308f002c6cSBruce M Simpson imo->im6o_num_memberships--; 24318f002c6cSBruce M Simpson } 24328f002c6cSBruce M Simpson 24338f002c6cSBruce M Simpson out_in6p_locked: 24348f002c6cSBruce M Simpson INP_WUNLOCK(inp); 24358f002c6cSBruce M Simpson return (error); 24368f002c6cSBruce M Simpson } 24378f002c6cSBruce M Simpson 24388f002c6cSBruce M Simpson /* 24398f002c6cSBruce M Simpson * Select the interface for transmitting IPv6 multicast datagrams. 24408f002c6cSBruce M Simpson * 24418f002c6cSBruce M Simpson * Either an instance of struct in6_addr or an instance of struct ipv6_mreqn 24428f002c6cSBruce M Simpson * may be passed to this socket option. An address of in6addr_any or an 24438f002c6cSBruce M Simpson * interface index of 0 is used to remove a previous selection. 24448f002c6cSBruce M Simpson * When no interface is selected, one is chosen for every send. 24458f002c6cSBruce M Simpson */ 24468f002c6cSBruce M Simpson static int 24478f002c6cSBruce M Simpson in6p_set_multicast_if(struct inpcb *inp, struct sockopt *sopt) 24488f002c6cSBruce M Simpson { 24498f002c6cSBruce M Simpson struct ifnet *ifp; 24508f002c6cSBruce M Simpson struct ip6_moptions *imo; 24518f002c6cSBruce M Simpson u_int ifindex; 24528f002c6cSBruce M Simpson int error; 24538f002c6cSBruce M Simpson 24548f002c6cSBruce M Simpson if (sopt->sopt_valsize != sizeof(u_int)) 24558f002c6cSBruce M Simpson return (EINVAL); 24568f002c6cSBruce M Simpson 24578f002c6cSBruce M Simpson error = sooptcopyin(sopt, &ifindex, sizeof(u_int), sizeof(u_int)); 24588f002c6cSBruce M Simpson if (error) 24598f002c6cSBruce M Simpson return (error); 2460010c2b81SBjoern A. Zeeb if (V_if_index < ifindex) 24618f002c6cSBruce M Simpson return (EINVAL); 2462e2956804SAndrey V. Elsukov if (ifindex == 0) 2463e2956804SAndrey V. Elsukov ifp = NULL; 2464e2956804SAndrey V. Elsukov else { 24658f002c6cSBruce M Simpson ifp = ifnet_byindex(ifindex); 2466e2956804SAndrey V. Elsukov if (ifp == NULL) 2467e2956804SAndrey V. Elsukov return (EINVAL); 2468e2956804SAndrey V. Elsukov if ((ifp->if_flags & IFF_MULTICAST) == 0) 24698f002c6cSBruce M Simpson return (EADDRNOTAVAIL); 2470e2956804SAndrey V. Elsukov } 24718f002c6cSBruce M Simpson imo = in6p_findmoptions(inp); 24728f002c6cSBruce M Simpson imo->im6o_multicast_ifp = ifp; 24738f002c6cSBruce M Simpson INP_WUNLOCK(inp); 24748f002c6cSBruce M Simpson 24758f002c6cSBruce M Simpson return (0); 24768f002c6cSBruce M Simpson } 24778f002c6cSBruce M Simpson 24788f002c6cSBruce M Simpson /* 24798f002c6cSBruce M Simpson * Atomically set source filters on a socket for an IPv6 multicast group. 24808f002c6cSBruce M Simpson * 24818f002c6cSBruce M Simpson * SMPng: NOTE: Potentially calls malloc(M_WAITOK) with Giant held. 24828f002c6cSBruce M Simpson */ 24838f002c6cSBruce M Simpson static int 24848f002c6cSBruce M Simpson in6p_set_source_filters(struct inpcb *inp, struct sockopt *sopt) 24858f002c6cSBruce M Simpson { 24868f002c6cSBruce M Simpson struct __msfilterreq msfr; 24878f002c6cSBruce M Simpson sockunion_t *gsa; 24888f002c6cSBruce M Simpson struct ifnet *ifp; 24898f002c6cSBruce M Simpson struct in6_mfilter *imf; 24908f002c6cSBruce M Simpson struct ip6_moptions *imo; 24918f002c6cSBruce M Simpson struct in6_multi *inm; 24928f002c6cSBruce M Simpson size_t idx; 24938f002c6cSBruce M Simpson int error; 24948f002c6cSBruce M Simpson 24958f002c6cSBruce M Simpson error = sooptcopyin(sopt, &msfr, sizeof(struct __msfilterreq), 24968f002c6cSBruce M Simpson sizeof(struct __msfilterreq)); 24978f002c6cSBruce M Simpson if (error) 24988f002c6cSBruce M Simpson return (error); 24998f002c6cSBruce M Simpson 25000dc5893eSBruce M Simpson if (msfr.msfr_nsrcs > in6_mcast_maxsocksrc) 25010dc5893eSBruce M Simpson return (ENOBUFS); 25020dc5893eSBruce M Simpson 25030dc5893eSBruce M Simpson if (msfr.msfr_fmode != MCAST_EXCLUDE && 25040dc5893eSBruce M Simpson msfr.msfr_fmode != MCAST_INCLUDE) 25058f002c6cSBruce M Simpson return (EINVAL); 25068f002c6cSBruce M Simpson 25078f002c6cSBruce M Simpson if (msfr.msfr_group.ss_family != AF_INET6 || 25088f002c6cSBruce M Simpson msfr.msfr_group.ss_len != sizeof(struct sockaddr_in6)) 25098f002c6cSBruce M Simpson return (EINVAL); 25108f002c6cSBruce M Simpson 25118f002c6cSBruce M Simpson gsa = (sockunion_t *)&msfr.msfr_group; 25128f002c6cSBruce M Simpson if (!IN6_IS_ADDR_MULTICAST(&gsa->sin6.sin6_addr)) 25138f002c6cSBruce M Simpson return (EINVAL); 25148f002c6cSBruce M Simpson 25158f002c6cSBruce M Simpson gsa->sin6.sin6_port = 0; /* ignore port */ 25168f002c6cSBruce M Simpson 25178f002c6cSBruce M Simpson if (msfr.msfr_ifindex == 0 || V_if_index < msfr.msfr_ifindex) 25188f002c6cSBruce M Simpson return (EADDRNOTAVAIL); 25198f002c6cSBruce M Simpson ifp = ifnet_byindex(msfr.msfr_ifindex); 25208f002c6cSBruce M Simpson if (ifp == NULL) 25218f002c6cSBruce M Simpson return (EADDRNOTAVAIL); 252229dc7bc6SBruce M Simpson (void)in6_setscope(&gsa->sin6.sin6_addr, ifp, NULL); 25238f002c6cSBruce M Simpson 25248f002c6cSBruce M Simpson /* 25258f002c6cSBruce M Simpson * Take the INP write lock. 25268f002c6cSBruce M Simpson * Check if this socket is a member of this group. 25278f002c6cSBruce M Simpson */ 25288f002c6cSBruce M Simpson imo = in6p_findmoptions(inp); 25298f002c6cSBruce M Simpson idx = im6o_match_group(imo, ifp, &gsa->sa); 25308f002c6cSBruce M Simpson if (idx == -1 || imo->im6o_mfilters == NULL) { 25318f002c6cSBruce M Simpson error = EADDRNOTAVAIL; 25328f002c6cSBruce M Simpson goto out_in6p_locked; 25338f002c6cSBruce M Simpson } 25348f002c6cSBruce M Simpson inm = imo->im6o_membership[idx]; 25358f002c6cSBruce M Simpson imf = &imo->im6o_mfilters[idx]; 25368f002c6cSBruce M Simpson 25378f002c6cSBruce M Simpson /* 25388f002c6cSBruce M Simpson * Begin state merge transaction at socket layer. 25398f002c6cSBruce M Simpson */ 25408f002c6cSBruce M Simpson INP_WLOCK_ASSERT(inp); 25418f002c6cSBruce M Simpson 25428f002c6cSBruce M Simpson imf->im6f_st[1] = msfr.msfr_fmode; 25438f002c6cSBruce M Simpson 25448f002c6cSBruce M Simpson /* 25458f002c6cSBruce M Simpson * Apply any new source filters, if present. 25468f002c6cSBruce M Simpson * Make a copy of the user-space source vector so 25478f002c6cSBruce M Simpson * that we may copy them with a single copyin. This 25488f002c6cSBruce M Simpson * allows us to deal with page faults up-front. 25498f002c6cSBruce M Simpson */ 25508f002c6cSBruce M Simpson if (msfr.msfr_nsrcs > 0) { 25518f002c6cSBruce M Simpson struct in6_msource *lims; 25528f002c6cSBruce M Simpson struct sockaddr_in6 *psin; 25538f002c6cSBruce M Simpson struct sockaddr_storage *kss, *pkss; 25548f002c6cSBruce M Simpson int i; 25558f002c6cSBruce M Simpson 25568f002c6cSBruce M Simpson INP_WUNLOCK(inp); 25578f002c6cSBruce M Simpson 25588f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: loading %lu source list entries", 25598f002c6cSBruce M Simpson __func__, (unsigned long)msfr.msfr_nsrcs); 25608f002c6cSBruce M Simpson kss = malloc(sizeof(struct sockaddr_storage) * msfr.msfr_nsrcs, 25618f002c6cSBruce M Simpson M_TEMP, M_WAITOK); 25628f002c6cSBruce M Simpson error = copyin(msfr.msfr_srcs, kss, 25638f002c6cSBruce M Simpson sizeof(struct sockaddr_storage) * msfr.msfr_nsrcs); 25648f002c6cSBruce M Simpson if (error) { 25658f002c6cSBruce M Simpson free(kss, M_TEMP); 25668f002c6cSBruce M Simpson return (error); 25678f002c6cSBruce M Simpson } 25688f002c6cSBruce M Simpson 25698f002c6cSBruce M Simpson INP_WLOCK(inp); 25708f002c6cSBruce M Simpson 25718f002c6cSBruce M Simpson /* 25728f002c6cSBruce M Simpson * Mark all source filters as UNDEFINED at t1. 25738f002c6cSBruce M Simpson * Restore new group filter mode, as im6f_leave() 25748f002c6cSBruce M Simpson * will set it to INCLUDE. 25758f002c6cSBruce M Simpson */ 25768f002c6cSBruce M Simpson im6f_leave(imf); 25778f002c6cSBruce M Simpson imf->im6f_st[1] = msfr.msfr_fmode; 25788f002c6cSBruce M Simpson 25798f002c6cSBruce M Simpson /* 25808f002c6cSBruce M Simpson * Update socket layer filters at t1, lazy-allocating 25818f002c6cSBruce M Simpson * new entries. This saves a bunch of memory at the 25828f002c6cSBruce M Simpson * cost of one RB_FIND() per source entry; duplicate 25838f002c6cSBruce M Simpson * entries in the msfr_nsrcs vector are ignored. 25848f002c6cSBruce M Simpson * If we encounter an error, rollback transaction. 25858f002c6cSBruce M Simpson * 25868f002c6cSBruce M Simpson * XXX This too could be replaced with a set-symmetric 25878f002c6cSBruce M Simpson * difference like loop to avoid walking from root 25888f002c6cSBruce M Simpson * every time, as the key space is common. 25898f002c6cSBruce M Simpson */ 25908f002c6cSBruce M Simpson for (i = 0, pkss = kss; i < msfr.msfr_nsrcs; i++, pkss++) { 25918f002c6cSBruce M Simpson psin = (struct sockaddr_in6 *)pkss; 25928f002c6cSBruce M Simpson if (psin->sin6_family != AF_INET6) { 25938f002c6cSBruce M Simpson error = EAFNOSUPPORT; 25948f002c6cSBruce M Simpson break; 25958f002c6cSBruce M Simpson } 25968f002c6cSBruce M Simpson if (psin->sin6_len != sizeof(struct sockaddr_in6)) { 25978f002c6cSBruce M Simpson error = EINVAL; 25988f002c6cSBruce M Simpson break; 25998f002c6cSBruce M Simpson } 260029dc7bc6SBruce M Simpson if (IN6_IS_ADDR_MULTICAST(&psin->sin6_addr)) { 260129dc7bc6SBruce M Simpson error = EINVAL; 260229dc7bc6SBruce M Simpson break; 260329dc7bc6SBruce M Simpson } 260429dc7bc6SBruce M Simpson /* 260529dc7bc6SBruce M Simpson * TODO: Validate embedded scope ID in source 260629dc7bc6SBruce M Simpson * list entry against passed-in ifp, if and only 260729dc7bc6SBruce M Simpson * if source list filter entry is iface or node local. 260829dc7bc6SBruce M Simpson */ 260929dc7bc6SBruce M Simpson in6_clearscope(&psin->sin6_addr); 26108f002c6cSBruce M Simpson error = im6f_get_source(imf, psin, &lims); 26118f002c6cSBruce M Simpson if (error) 26128f002c6cSBruce M Simpson break; 26138f002c6cSBruce M Simpson lims->im6sl_st[1] = imf->im6f_st[1]; 26148f002c6cSBruce M Simpson } 26158f002c6cSBruce M Simpson free(kss, M_TEMP); 26168f002c6cSBruce M Simpson } 26178f002c6cSBruce M Simpson 26188f002c6cSBruce M Simpson if (error) 26198f002c6cSBruce M Simpson goto out_im6f_rollback; 26208f002c6cSBruce M Simpson 26218f002c6cSBruce M Simpson INP_WLOCK_ASSERT(inp); 2622f3e1324bSStephen Hurd IN6_MULTI_LIST_LOCK(); 26238f002c6cSBruce M Simpson 26248f002c6cSBruce M Simpson /* 26258f002c6cSBruce M Simpson * Begin state merge transaction at MLD layer. 26268f002c6cSBruce M Simpson */ 26278f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: merge inm state", __func__); 26288f002c6cSBruce M Simpson error = in6m_merge(inm, imf); 26294fd91336SAndrey V. Elsukov if (error) 26308f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: failed to merge inm state", __func__); 26314fd91336SAndrey V. Elsukov else { 26328f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: doing mld downcall", __func__); 26338f002c6cSBruce M Simpson error = mld_change_state(inm, 0); 26348f002c6cSBruce M Simpson if (error) 26358f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: failed mld downcall", __func__); 26364fd91336SAndrey V. Elsukov } 26378f002c6cSBruce M Simpson 2638f3e1324bSStephen Hurd IN6_MULTI_LIST_UNLOCK(); 26398f002c6cSBruce M Simpson 26408f002c6cSBruce M Simpson out_im6f_rollback: 26418f002c6cSBruce M Simpson if (error) 26428f002c6cSBruce M Simpson im6f_rollback(imf); 26438f002c6cSBruce M Simpson else 26448f002c6cSBruce M Simpson im6f_commit(imf); 26458f002c6cSBruce M Simpson 26468f002c6cSBruce M Simpson im6f_reap(imf); 26478f002c6cSBruce M Simpson 26488f002c6cSBruce M Simpson out_in6p_locked: 26498f002c6cSBruce M Simpson INP_WUNLOCK(inp); 26508f002c6cSBruce M Simpson return (error); 26518f002c6cSBruce M Simpson } 26528f002c6cSBruce M Simpson 26538f002c6cSBruce M Simpson /* 26548f002c6cSBruce M Simpson * Set the IP multicast options in response to user setsockopt(). 26558f002c6cSBruce M Simpson * 26568f002c6cSBruce M Simpson * Many of the socket options handled in this function duplicate the 26578f002c6cSBruce M Simpson * functionality of socket options in the regular unicast API. However, 26588f002c6cSBruce M Simpson * it is not possible to merge the duplicate code, because the idempotence 26598f002c6cSBruce M Simpson * of the IPv6 multicast part of the BSD Sockets API must be preserved; 26608f002c6cSBruce M Simpson * the effects of these options must be treated as separate and distinct. 26618f002c6cSBruce M Simpson * 26628f002c6cSBruce M Simpson * SMPng: XXX: Unlocked read of inp_socket believed OK. 26638f002c6cSBruce M Simpson */ 26648f002c6cSBruce M Simpson int 26658f002c6cSBruce M Simpson ip6_setmoptions(struct inpcb *inp, struct sockopt *sopt) 26668f002c6cSBruce M Simpson { 266733cde130SBruce M Simpson struct ip6_moptions *im6o; 26688f002c6cSBruce M Simpson int error; 26698f002c6cSBruce M Simpson 26708f002c6cSBruce M Simpson error = 0; 26718f002c6cSBruce M Simpson 26728f002c6cSBruce M Simpson /* 26738f002c6cSBruce M Simpson * If socket is neither of type SOCK_RAW or SOCK_DGRAM, 26748f002c6cSBruce M Simpson * or is a divert socket, reject it. 26758f002c6cSBruce M Simpson */ 26768f002c6cSBruce M Simpson if (inp->inp_socket->so_proto->pr_protocol == IPPROTO_DIVERT || 26778f002c6cSBruce M Simpson (inp->inp_socket->so_proto->pr_type != SOCK_RAW && 26788f002c6cSBruce M Simpson inp->inp_socket->so_proto->pr_type != SOCK_DGRAM)) 26798f002c6cSBruce M Simpson return (EOPNOTSUPP); 26808f002c6cSBruce M Simpson 26818f002c6cSBruce M Simpson switch (sopt->sopt_name) { 26828f002c6cSBruce M Simpson case IPV6_MULTICAST_IF: 26838f002c6cSBruce M Simpson error = in6p_set_multicast_if(inp, sopt); 26848f002c6cSBruce M Simpson break; 26858f002c6cSBruce M Simpson 26868f002c6cSBruce M Simpson case IPV6_MULTICAST_HOPS: { 26878f002c6cSBruce M Simpson int hlim; 26888f002c6cSBruce M Simpson 26898f002c6cSBruce M Simpson if (sopt->sopt_valsize != sizeof(int)) { 26908f002c6cSBruce M Simpson error = EINVAL; 26918f002c6cSBruce M Simpson break; 26928f002c6cSBruce M Simpson } 26938f002c6cSBruce M Simpson error = sooptcopyin(sopt, &hlim, sizeof(hlim), sizeof(int)); 26948f002c6cSBruce M Simpson if (error) 26958f002c6cSBruce M Simpson break; 26968f002c6cSBruce M Simpson if (hlim < -1 || hlim > 255) { 26978f002c6cSBruce M Simpson error = EINVAL; 26988f002c6cSBruce M Simpson break; 269933cde130SBruce M Simpson } else if (hlim == -1) { 270033cde130SBruce M Simpson hlim = V_ip6_defmcasthlim; 27018f002c6cSBruce M Simpson } 270233cde130SBruce M Simpson im6o = in6p_findmoptions(inp); 270333cde130SBruce M Simpson im6o->im6o_multicast_hlim = hlim; 27048f002c6cSBruce M Simpson INP_WUNLOCK(inp); 27058f002c6cSBruce M Simpson break; 27068f002c6cSBruce M Simpson } 27078f002c6cSBruce M Simpson 27088f002c6cSBruce M Simpson case IPV6_MULTICAST_LOOP: { 27098f002c6cSBruce M Simpson u_int loop; 27108f002c6cSBruce M Simpson 27118f002c6cSBruce M Simpson /* 27128f002c6cSBruce M Simpson * Set the loopback flag for outgoing multicast packets. 271333cde130SBruce M Simpson * Must be zero or one. 27148f002c6cSBruce M Simpson */ 27158f002c6cSBruce M Simpson if (sopt->sopt_valsize != sizeof(u_int)) { 27168f002c6cSBruce M Simpson error = EINVAL; 27178f002c6cSBruce M Simpson break; 27188f002c6cSBruce M Simpson } 27198f002c6cSBruce M Simpson error = sooptcopyin(sopt, &loop, sizeof(u_int), sizeof(u_int)); 27208f002c6cSBruce M Simpson if (error) 27218f002c6cSBruce M Simpson break; 272233cde130SBruce M Simpson if (loop > 1) { 272333cde130SBruce M Simpson error = EINVAL; 272433cde130SBruce M Simpson break; 272533cde130SBruce M Simpson } 272633cde130SBruce M Simpson im6o = in6p_findmoptions(inp); 272733cde130SBruce M Simpson im6o->im6o_multicast_loop = loop; 27288f002c6cSBruce M Simpson INP_WUNLOCK(inp); 27298f002c6cSBruce M Simpson break; 27308f002c6cSBruce M Simpson } 27318f002c6cSBruce M Simpson 27328f002c6cSBruce M Simpson case IPV6_JOIN_GROUP: 27338f002c6cSBruce M Simpson case MCAST_JOIN_GROUP: 27348f002c6cSBruce M Simpson case MCAST_JOIN_SOURCE_GROUP: 27358f002c6cSBruce M Simpson error = in6p_join_group(inp, sopt); 27368f002c6cSBruce M Simpson break; 27378f002c6cSBruce M Simpson 27388f002c6cSBruce M Simpson case IPV6_LEAVE_GROUP: 27398f002c6cSBruce M Simpson case MCAST_LEAVE_GROUP: 27408f002c6cSBruce M Simpson case MCAST_LEAVE_SOURCE_GROUP: 27418f002c6cSBruce M Simpson error = in6p_leave_group(inp, sopt); 27428f002c6cSBruce M Simpson break; 27438f002c6cSBruce M Simpson 27448f002c6cSBruce M Simpson case MCAST_BLOCK_SOURCE: 27458f002c6cSBruce M Simpson case MCAST_UNBLOCK_SOURCE: 27468f002c6cSBruce M Simpson error = in6p_block_unblock_source(inp, sopt); 27478f002c6cSBruce M Simpson break; 27488f002c6cSBruce M Simpson 27498f002c6cSBruce M Simpson case IPV6_MSFILTER: 27508f002c6cSBruce M Simpson error = in6p_set_source_filters(inp, sopt); 27518f002c6cSBruce M Simpson break; 27528f002c6cSBruce M Simpson 27538f002c6cSBruce M Simpson default: 27548f002c6cSBruce M Simpson error = EOPNOTSUPP; 27558f002c6cSBruce M Simpson break; 27568f002c6cSBruce M Simpson } 27578f002c6cSBruce M Simpson 27588f002c6cSBruce M Simpson INP_UNLOCK_ASSERT(inp); 27598f002c6cSBruce M Simpson 27608f002c6cSBruce M Simpson return (error); 27618f002c6cSBruce M Simpson } 27628f002c6cSBruce M Simpson 27638f002c6cSBruce M Simpson /* 27648f002c6cSBruce M Simpson * Expose MLD's multicast filter mode and source list(s) to userland, 27658f002c6cSBruce M Simpson * keyed by (ifindex, group). 27668f002c6cSBruce M Simpson * The filter mode is written out as a uint32_t, followed by 27678f002c6cSBruce M Simpson * 0..n of struct in6_addr. 27688f002c6cSBruce M Simpson * For use by ifmcstat(8). 27698f002c6cSBruce M Simpson * SMPng: NOTE: unlocked read of ifindex space. 27708f002c6cSBruce M Simpson */ 27718f002c6cSBruce M Simpson static int 27728f002c6cSBruce M Simpson sysctl_ip6_mcast_filters(SYSCTL_HANDLER_ARGS) 27738f002c6cSBruce M Simpson { 277429dc7bc6SBruce M Simpson struct in6_addr mcaddr; 27758f002c6cSBruce M Simpson struct in6_addr src; 27768f002c6cSBruce M Simpson struct ifnet *ifp; 27778f002c6cSBruce M Simpson struct ifmultiaddr *ifma; 27788f002c6cSBruce M Simpson struct in6_multi *inm; 27798f002c6cSBruce M Simpson struct ip6_msource *ims; 27808f002c6cSBruce M Simpson int *name; 27818f002c6cSBruce M Simpson int retval; 27828f002c6cSBruce M Simpson u_int namelen; 27838f002c6cSBruce M Simpson uint32_t fmode, ifindex; 27848f002c6cSBruce M Simpson #ifdef KTR 27858f002c6cSBruce M Simpson char ip6tbuf[INET6_ADDRSTRLEN]; 27868f002c6cSBruce M Simpson #endif 27878f002c6cSBruce M Simpson 27888f002c6cSBruce M Simpson name = (int *)arg1; 27898f002c6cSBruce M Simpson namelen = arg2; 27908f002c6cSBruce M Simpson 27918f002c6cSBruce M Simpson if (req->newptr != NULL) 27928f002c6cSBruce M Simpson return (EPERM); 27938f002c6cSBruce M Simpson 27948f002c6cSBruce M Simpson /* int: ifindex + 4 * 32 bits of IPv6 address */ 27958f002c6cSBruce M Simpson if (namelen != 5) 27968f002c6cSBruce M Simpson return (EINVAL); 27978f002c6cSBruce M Simpson 27988f002c6cSBruce M Simpson ifindex = name[0]; 27998f002c6cSBruce M Simpson if (ifindex <= 0 || ifindex > V_if_index) { 28008f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: ifindex %u out of range", 28018f002c6cSBruce M Simpson __func__, ifindex); 28028f002c6cSBruce M Simpson return (ENOENT); 28038f002c6cSBruce M Simpson } 28048f002c6cSBruce M Simpson 280529dc7bc6SBruce M Simpson memcpy(&mcaddr, &name[1], sizeof(struct in6_addr)); 280629dc7bc6SBruce M Simpson if (!IN6_IS_ADDR_MULTICAST(&mcaddr)) { 28078f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: group %s is not multicast", 280829dc7bc6SBruce M Simpson __func__, ip6_sprintf(ip6tbuf, &mcaddr)); 28098f002c6cSBruce M Simpson return (EINVAL); 28108f002c6cSBruce M Simpson } 28118f002c6cSBruce M Simpson 28128f002c6cSBruce M Simpson ifp = ifnet_byindex(ifindex); 28138f002c6cSBruce M Simpson if (ifp == NULL) { 28148f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: no ifp for ifindex %u", 28158f002c6cSBruce M Simpson __func__, ifindex); 28168f002c6cSBruce M Simpson return (ENOENT); 28178f002c6cSBruce M Simpson } 281829dc7bc6SBruce M Simpson /* 281929dc7bc6SBruce M Simpson * Internal MLD lookups require that scope/zone ID is set. 282029dc7bc6SBruce M Simpson */ 282129dc7bc6SBruce M Simpson (void)in6_setscope(&mcaddr, ifp, NULL); 28228f002c6cSBruce M Simpson 28238f002c6cSBruce M Simpson retval = sysctl_wire_old_buffer(req, 28248f002c6cSBruce M Simpson sizeof(uint32_t) + (in6_mcast_maxgrpsrc * sizeof(struct in6_addr))); 28258f002c6cSBruce M Simpson if (retval) 28268f002c6cSBruce M Simpson return (retval); 28278f002c6cSBruce M Simpson 28288f002c6cSBruce M Simpson IN6_MULTI_LOCK(); 2829f3e1324bSStephen Hurd IN6_MULTI_LIST_LOCK(); 2830137f91e8SJohn Baldwin IF_ADDR_RLOCK(ifp); 2831d7c5a620SMatt Macy CK_STAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 28328f002c6cSBruce M Simpson if (ifma->ifma_addr->sa_family != AF_INET6 || 28338f002c6cSBruce M Simpson ifma->ifma_protospec == NULL) 28348f002c6cSBruce M Simpson continue; 28358f002c6cSBruce M Simpson inm = (struct in6_multi *)ifma->ifma_protospec; 283629dc7bc6SBruce M Simpson if (!IN6_ARE_ADDR_EQUAL(&inm->in6m_addr, &mcaddr)) 28378f002c6cSBruce M Simpson continue; 28388f002c6cSBruce M Simpson fmode = inm->in6m_st[1].iss_fmode; 28398f002c6cSBruce M Simpson retval = SYSCTL_OUT(req, &fmode, sizeof(uint32_t)); 28408f002c6cSBruce M Simpson if (retval != 0) 28418f002c6cSBruce M Simpson break; 28428f002c6cSBruce M Simpson RB_FOREACH(ims, ip6_msource_tree, &inm->in6m_srcs) { 28438f002c6cSBruce M Simpson CTR2(KTR_MLD, "%s: visit node %p", __func__, ims); 28448f002c6cSBruce M Simpson /* 28458f002c6cSBruce M Simpson * Only copy-out sources which are in-mode. 28468f002c6cSBruce M Simpson */ 28478f002c6cSBruce M Simpson if (fmode != im6s_get_mode(inm, ims, 1)) { 28488f002c6cSBruce M Simpson CTR1(KTR_MLD, "%s: skip non-in-mode", 28498f002c6cSBruce M Simpson __func__); 28508f002c6cSBruce M Simpson continue; 28518f002c6cSBruce M Simpson } 28528f002c6cSBruce M Simpson src = ims->im6s_addr; 28538f002c6cSBruce M Simpson retval = SYSCTL_OUT(req, &src, 28548f002c6cSBruce M Simpson sizeof(struct in6_addr)); 28558f002c6cSBruce M Simpson if (retval != 0) 28568f002c6cSBruce M Simpson break; 28578f002c6cSBruce M Simpson } 28588f002c6cSBruce M Simpson } 2859137f91e8SJohn Baldwin IF_ADDR_RUNLOCK(ifp); 28608f002c6cSBruce M Simpson 2861f3e1324bSStephen Hurd IN6_MULTI_LIST_UNLOCK(); 28628f002c6cSBruce M Simpson IN6_MULTI_UNLOCK(); 28638f002c6cSBruce M Simpson 28648f002c6cSBruce M Simpson return (retval); 28658f002c6cSBruce M Simpson } 28668f002c6cSBruce M Simpson 28678f002c6cSBruce M Simpson #ifdef KTR 28688f002c6cSBruce M Simpson 28698f002c6cSBruce M Simpson static const char *in6m_modestrs[] = { "un", "in", "ex" }; 28708f002c6cSBruce M Simpson 28718f002c6cSBruce M Simpson static const char * 28728f002c6cSBruce M Simpson in6m_mode_str(const int mode) 28738f002c6cSBruce M Simpson { 28748f002c6cSBruce M Simpson 28758f002c6cSBruce M Simpson if (mode >= MCAST_UNDEFINED && mode <= MCAST_EXCLUDE) 28768f002c6cSBruce M Simpson return (in6m_modestrs[mode]); 28778f002c6cSBruce M Simpson return ("??"); 28788f002c6cSBruce M Simpson } 28798f002c6cSBruce M Simpson 28808f002c6cSBruce M Simpson static const char *in6m_statestrs[] = { 28818f002c6cSBruce M Simpson "not-member", 28828f002c6cSBruce M Simpson "silent", 28838f002c6cSBruce M Simpson "idle", 28848f002c6cSBruce M Simpson "lazy", 28858f002c6cSBruce M Simpson "sleeping", 28868f002c6cSBruce M Simpson "awakening", 28878f002c6cSBruce M Simpson "query-pending", 28888f002c6cSBruce M Simpson "sg-query-pending", 28898f002c6cSBruce M Simpson "leaving" 28908f002c6cSBruce M Simpson }; 28918f002c6cSBruce M Simpson 28928f002c6cSBruce M Simpson static const char * 28938f002c6cSBruce M Simpson in6m_state_str(const int state) 28948f002c6cSBruce M Simpson { 28958f002c6cSBruce M Simpson 28968f002c6cSBruce M Simpson if (state >= MLD_NOT_MEMBER && state <= MLD_LEAVING_MEMBER) 28978f002c6cSBruce M Simpson return (in6m_statestrs[state]); 28988f002c6cSBruce M Simpson return ("??"); 28998f002c6cSBruce M Simpson } 29008f002c6cSBruce M Simpson 29018f002c6cSBruce M Simpson /* 29028f002c6cSBruce M Simpson * Dump an in6_multi structure to the console. 29038f002c6cSBruce M Simpson */ 29048f002c6cSBruce M Simpson void 29058f002c6cSBruce M Simpson in6m_print(const struct in6_multi *inm) 29068f002c6cSBruce M Simpson { 29078f002c6cSBruce M Simpson int t; 29088f002c6cSBruce M Simpson char ip6tbuf[INET6_ADDRSTRLEN]; 29098f002c6cSBruce M Simpson 29105b65b8bcSAlexander Kabaev if ((ktr_mask & KTR_MLD) == 0) 29118f002c6cSBruce M Simpson return; 29128f002c6cSBruce M Simpson 29138f002c6cSBruce M Simpson printf("%s: --- begin in6m %p ---\n", __func__, inm); 29148f002c6cSBruce M Simpson printf("addr %s ifp %p(%s) ifma %p\n", 29158f002c6cSBruce M Simpson ip6_sprintf(ip6tbuf, &inm->in6m_addr), 29168f002c6cSBruce M Simpson inm->in6m_ifp, 2917e74966f6SAndrey V. Elsukov if_name(inm->in6m_ifp), 29188f002c6cSBruce M Simpson inm->in6m_ifma); 29198f002c6cSBruce M Simpson printf("timer %u state %s refcount %u scq.len %u\n", 29208f002c6cSBruce M Simpson inm->in6m_timer, 29218f002c6cSBruce M Simpson in6m_state_str(inm->in6m_state), 29228f002c6cSBruce M Simpson inm->in6m_refcount, 2923a99c84d4SGleb Smirnoff mbufq_len(&inm->in6m_scq)); 29248f002c6cSBruce M Simpson printf("mli %p nsrc %lu sctimer %u scrv %u\n", 29258f002c6cSBruce M Simpson inm->in6m_mli, 29268f002c6cSBruce M Simpson inm->in6m_nsrc, 29278f002c6cSBruce M Simpson inm->in6m_sctimer, 29288f002c6cSBruce M Simpson inm->in6m_scrv); 29298f002c6cSBruce M Simpson for (t = 0; t < 2; t++) { 29308f002c6cSBruce M Simpson printf("t%d: fmode %s asm %u ex %u in %u rec %u\n", t, 29318f002c6cSBruce M Simpson in6m_mode_str(inm->in6m_st[t].iss_fmode), 29328f002c6cSBruce M Simpson inm->in6m_st[t].iss_asm, 29338f002c6cSBruce M Simpson inm->in6m_st[t].iss_ex, 29348f002c6cSBruce M Simpson inm->in6m_st[t].iss_in, 29358f002c6cSBruce M Simpson inm->in6m_st[t].iss_rec); 29368f002c6cSBruce M Simpson } 29378f002c6cSBruce M Simpson printf("%s: --- end in6m %p ---\n", __func__, inm); 29388f002c6cSBruce M Simpson } 29398f002c6cSBruce M Simpson 29408f002c6cSBruce M Simpson #else /* !KTR */ 29418f002c6cSBruce M Simpson 29428f002c6cSBruce M Simpson void 29438f002c6cSBruce M Simpson in6m_print(const struct in6_multi *inm) 29448f002c6cSBruce M Simpson { 29458f002c6cSBruce M Simpson 29468f002c6cSBruce M Simpson } 29478f002c6cSBruce M Simpson 29488f002c6cSBruce M Simpson #endif /* KTR */ 2949