607 	struct ipv6_mc_socklist *mc;  in inet6_mc_check()  local
612 	for_each_pmc_rcu(np, mc) {  in inet6_mc_check()
613 		if (ipv6_addr_equal(&mc->addr, mc_addr))  in inet6_mc_check()
616 	if (!mc) {  in inet6_mc_check()
620 	read_lock(&mc->sflock);  in inet6_mc_check()
621 	psl = mc->sflist;  in inet6_mc_check()
623 		rv = mc->sfmode == MCAST_EXCLUDE;  in inet6_mc_check()
631 		if (mc->sfmode == MCAST_INCLUDE && i >= psl->sl_count)  in inet6_mc_check()
633 		if (mc->sfmode == MCAST_EXCLUDE && i < psl->sl_count)  in inet6_mc_check()
636 	read_unlock(&mc->sflock);  in inet6_mc_check()
642 static void igmp6_group_added(struct ifmcaddr6 *mc)  in igmp6_group_added()  argument
644 	struct net_device *dev = mc->idev->dev;  in igmp6_group_added()
647 	if (IPV6_ADDR_MC_SCOPE(&mc->mca_addr) <  in igmp6_group_added()
651 	spin_lock_bh(&mc->mca_lock);  in igmp6_group_added()
652 	if (!(mc->mca_flags&MAF_LOADED)) {  in igmp6_group_added()
653 		mc->mca_flags |= MAF_LOADED;  in igmp6_group_added()
654 		if (ndisc_mc_map(&mc->mca_addr, buf, dev, 0) == 0)  in igmp6_group_added()
657 	spin_unlock_bh(&mc->mca_lock);  in igmp6_group_added()
659 	if (!(dev->flags & IFF_UP) || (mc->mca_flags & MAF_NOREPORT))  in igmp6_group_added()
662 	if (mld_in_v1_mode(mc->idev)) {  in igmp6_group_added()
663 		igmp6_join_group(mc);  in igmp6_group_added()
668 	mc->mca_crcount = mc->idev->mc_qrv;  in igmp6_group_added()
669 	mld_ifc_event(mc->idev);  in igmp6_group_added()
672 static void igmp6_group_dropped(struct ifmcaddr6 *mc)  in igmp6_group_dropped()  argument
674 	struct net_device *dev = mc->idev->dev;  in igmp6_group_dropped()
677 	if (IPV6_ADDR_MC_SCOPE(&mc->mca_addr) <  in igmp6_group_dropped()
681 	spin_lock_bh(&mc->mca_lock);  in igmp6_group_dropped()
682 	if (mc->mca_flags&MAF_LOADED) {  in igmp6_group_dropped()
683 		mc->mca_flags &= ~MAF_LOADED;  in igmp6_group_dropped()
684 		if (ndisc_mc_map(&mc->mca_addr, buf, dev, 0) == 0)  in igmp6_group_dropped()
688 	if (mc->mca_flags & MAF_NOREPORT)  in igmp6_group_dropped()
690 	spin_unlock_bh(&mc->mca_lock);  in igmp6_group_dropped()
692 	if (!mc->idev->dead)  in igmp6_group_dropped()
693 		igmp6_leave_group(mc);  in igmp6_group_dropped()
695 	spin_lock_bh(&mc->mca_lock);  in igmp6_group_dropped()
696 	if (del_timer(&mc->mca_timer))  in igmp6_group_dropped()
697 		atomic_dec(&mc->mca_refcnt);  in igmp6_group_dropped()
699 	ip6_mc_clear_src(mc);  in igmp6_group_dropped()
700 	spin_unlock_bh(&mc->mca_lock);  in igmp6_group_dropped()
807 static void mca_get(struct ifmcaddr6 *mc)  in mca_get()  argument
809 	atomic_inc(&mc->mca_refcnt);  in mca_get()
812 static void ma_put(struct ifmcaddr6 *mc)  in ma_put()  argument
814 	if (atomic_dec_and_test(&mc->mca_refcnt)) {  in ma_put()
815 		in6_dev_put(mc->idev);  in ma_put()
816 		kfree(mc);  in ma_put()
823 	struct ifmcaddr6 *mc;  in mca_alloc()  local
825 	mc = kzalloc(sizeof(*mc), GFP_ATOMIC);  in mca_alloc()
826 	if (!mc)  in mca_alloc()
829 	setup_timer(&mc->mca_timer, igmp6_timer_handler, (unsigned long)mc);  in mca_alloc()
831 	mc->mca_addr = *addr;  in mca_alloc()
832 	mc->idev = idev; /* reference taken by caller */  in mca_alloc()
833 	mc->mca_users = 1;  in mca_alloc()
835 	mc->mca_cstamp = mc->mca_tstamp = jiffies;  in mca_alloc()
836 	atomic_set(&mc->mca_refcnt, 1);  in mca_alloc()
837 	spin_lock_init(&mc->mca_lock);  in mca_alloc()
840 	mc->mca_sfmode = MCAST_EXCLUDE;  in mca_alloc()
841 	mc->mca_sfcount[MCAST_EXCLUDE] = 1;  in mca_alloc()
843 	if (ipv6_addr_is_ll_all_nodes(&mc->mca_addr) ||  in mca_alloc()
844 	    IPV6_ADDR_MC_SCOPE(&mc->mca_addr) < IPV6_ADDR_SCOPE_LINKLOCAL)  in mca_alloc()
845 		mc->mca_flags |= MAF_NOREPORT;  in mca_alloc()
847 	return mc;  in mca_alloc()
855 	struct ifmcaddr6 *mc;  in ipv6_dev_mc_inc()  local
873 	for (mc = idev->mc_list; mc; mc = mc->next) {  in ipv6_dev_mc_inc()
874 		if (ipv6_addr_equal(&mc->mca_addr, addr)) {  in ipv6_dev_mc_inc()
875 			mc->mca_users++;  in ipv6_dev_mc_inc()
877 			ip6_mc_add_src(idev, &mc->mca_addr, MCAST_EXCLUDE, 0,  in ipv6_dev_mc_inc()
884 	mc = mca_alloc(idev, addr);  in ipv6_dev_mc_inc()
885 	if (!mc) {  in ipv6_dev_mc_inc()
891 	mc->next = idev->mc_list;  in ipv6_dev_mc_inc()
892 	idev->mc_list = mc;  in ipv6_dev_mc_inc()
897 	mca_get(mc);  in ipv6_dev_mc_inc()
900 	mld_del_delrec(idev, &mc->mca_addr);  in ipv6_dev_mc_inc()
901 	igmp6_group_added(mc);  in ipv6_dev_mc_inc()
902 	ma_put(mc);  in ipv6_dev_mc_inc()
959 	struct ifmcaddr6 *mc;  in ipv6_chk_mcast_addr()  local
966 		for (mc = idev->mc_list; mc; mc = mc->next) {  in ipv6_chk_mcast_addr()
967 			if (ipv6_addr_equal(&mc->mca_addr, group))  in ipv6_chk_mcast_addr()
970 		if (mc) {  in ipv6_chk_mcast_addr()
974 				spin_lock_bh(&mc->mca_lock);  in ipv6_chk_mcast_addr()
975 				for (psf = mc->mca_sources; psf; psf = psf->sf_next) {  in ipv6_chk_mcast_addr()
982 						mc->mca_sfcount[MCAST_EXCLUDE];  in ipv6_chk_mcast_addr()
984 					rv = mc->mca_sfcount[MCAST_EXCLUDE] != 0;  in ipv6_chk_mcast_addr()
985 				spin_unlock_bh(&mc->mca_lock);  in ipv6_chk_mcast_addr()