131 #define IGMP_V1_SEEN(in_dev) \  argument
132 	(IPV4_DEVCONF_ALL(dev_net(in_dev->dev), FORCE_IGMP_VERSION) == 1 || \
133 	 IN_DEV_CONF_GET((in_dev), FORCE_IGMP_VERSION) == 1 || \
134 	 ((in_dev)->mr_v1_seen && \
135 	  time_before(jiffies, (in_dev)->mr_v1_seen)))
136 #define IGMP_V2_SEEN(in_dev) \  argument
137 	(IPV4_DEVCONF_ALL(dev_net(in_dev->dev), FORCE_IGMP_VERSION) == 2 || \
138 	 IN_DEV_CONF_GET((in_dev), FORCE_IGMP_VERSION) == 2 || \
139 	 ((in_dev)->mr_v2_seen && \
140 	  time_before(jiffies, (in_dev)->mr_v2_seen)))
142 static int unsolicited_report_interval(struct in_device *in_dev)  in unsolicited_report_interval()  argument
146 	if (IGMP_V1_SEEN(in_dev) || IGMP_V2_SEEN(in_dev))  in unsolicited_report_interval()
148 			in_dev,  in unsolicited_report_interval()
152 			in_dev,  in unsolicited_report_interval()
165 static void igmpv3_add_delrec(struct in_device *in_dev, struct ip_mc_list *im);
166 static void igmpv3_del_delrec(struct in_device *in_dev, struct ip_mc_list *im);
167 static void igmpv3_clear_delrec(struct in_device *in_dev);
172 static int ip_mc_add_src(struct in_device *in_dev, __be32 *pmca, int sfmode,
183 #define for_each_pmc_rcu(in_dev, pmc)				\  argument
184 	for (pmc = rcu_dereference(in_dev->mc_list);		\
188 #define for_each_pmc_rtnl(in_dev, pmc)				\  argument
189 	for (pmc = rtnl_dereference(in_dev->mc_list);		\
220 static void igmp_gq_start_timer(struct in_device *in_dev)  in igmp_gq_start_timer()  argument
222 	int tv = prandom_u32() % in_dev->mr_maxdelay;  in igmp_gq_start_timer()
225 	if (in_dev->mr_gq_running &&  in igmp_gq_start_timer()
226 	    time_after_eq(exp, (in_dev->mr_gq_timer).expires))  in igmp_gq_start_timer()
229 	in_dev->mr_gq_running = 1;  in igmp_gq_start_timer()
230 	if (!mod_timer(&in_dev->mr_gq_timer, exp))  in igmp_gq_start_timer()
231 		in_dev_hold(in_dev);  in igmp_gq_start_timer()
234 static void igmp_ifc_start_timer(struct in_device *in_dev, int delay)  in igmp_ifc_start_timer()  argument
238 	if (!mod_timer(&in_dev->mr_ifc_timer, jiffies+tv+2))  in igmp_ifc_start_timer()
239 		in_dev_hold(in_dev);  in igmp_ifc_start_timer()
329 	struct in_device *in_dev = __in_dev_get_rcu(dev);  in igmpv3_get_srcaddr()  local
331 	if (!in_dev)  in igmpv3_get_srcaddr()
334 	for_ifa(in_dev) {  in igmpv3_get_srcaddr()
337 	} endfor_ifa(in_dev);  in igmpv3_get_srcaddr()
580 static int igmpv3_send_report(struct in_device *in_dev, struct ip_mc_list *pmc)  in igmpv3_send_report()  argument
583 	struct net *net = dev_net(in_dev->dev);  in igmpv3_send_report()
588 		for_each_pmc_rcu(in_dev, pmc) {  in igmpv3_send_report()
638 static void igmpv3_send_cr(struct in_device *in_dev)  in igmpv3_send_cr()  argument
645 	spin_lock_bh(&in_dev->mc_tomb_lock);  in igmpv3_send_cr()
649 	for (pmc = in_dev->mc_tomb; pmc; pmc = pmc_next) {  in igmpv3_send_cr()
672 				in_dev->mc_tomb = pmc_next;  in igmpv3_send_cr()
678 	spin_unlock_bh(&in_dev->mc_tomb_lock);  in igmpv3_send_cr()
681 	for_each_pmc_rcu(in_dev, pmc) {  in igmpv3_send_cr()
711 static int igmp_send_report(struct in_device *in_dev, struct ip_mc_list *pmc,  in igmp_send_report()  argument
718 	struct net_device *dev = in_dev->dev;  in igmp_send_report()
726 		return igmpv3_send_report(in_dev, pmc);  in igmp_send_report()
785 	struct in_device *in_dev = from_timer(in_dev, t, mr_gq_timer);  in igmp_gq_timer_expire()  local
787 	in_dev->mr_gq_running = 0;  in igmp_gq_timer_expire()
788 	igmpv3_send_report(in_dev, NULL);  in igmp_gq_timer_expire()
789 	in_dev_put(in_dev);  in igmp_gq_timer_expire()
794 	struct in_device *in_dev = from_timer(in_dev, t, mr_ifc_timer);  in igmp_ifc_timer_expire()  local
796 	igmpv3_send_cr(in_dev);  in igmp_ifc_timer_expire()
797 	if (in_dev->mr_ifc_count) {  in igmp_ifc_timer_expire()
798 		in_dev->mr_ifc_count--;  in igmp_ifc_timer_expire()
799 		igmp_ifc_start_timer(in_dev,  in igmp_ifc_timer_expire()
800 				     unsolicited_report_interval(in_dev));  in igmp_ifc_timer_expire()
802 	in_dev_put(in_dev);  in igmp_ifc_timer_expire()
805 static void igmp_ifc_event(struct in_device *in_dev)  in igmp_ifc_event()  argument
807 	struct net *net = dev_net(in_dev->dev);  in igmp_ifc_event()
808 	if (IGMP_V1_SEEN(in_dev) || IGMP_V2_SEEN(in_dev))  in igmp_ifc_event()
810 	in_dev->mr_ifc_count = in_dev->mr_qrv ?: net->ipv4.sysctl_igmp_qrv;  in igmp_ifc_event()
811 	igmp_ifc_start_timer(in_dev, 1);  in igmp_ifc_event()
818 	struct in_device *in_dev = im->interface;  in igmp_timer_expire()  local
824 		igmp_start_timer(im, unsolicited_report_interval(in_dev));  in igmp_timer_expire()
829 	if (IGMP_V1_SEEN(in_dev))  in igmp_timer_expire()
830 		igmp_send_report(in_dev, im, IGMP_HOST_MEMBERSHIP_REPORT);  in igmp_timer_expire()
831 	else if (IGMP_V2_SEEN(in_dev))  in igmp_timer_expire()
832 		igmp_send_report(in_dev, im, IGMPV2_HOST_MEMBERSHIP_REPORT);  in igmp_timer_expire()
834 		igmp_send_report(in_dev, im, IGMPV3_HOST_MEMBERSHIP_REPORT);  in igmp_timer_expire()
896 static bool igmp_heard_report(struct in_device *in_dev, __be32 group)  in igmp_heard_report()  argument
899 	struct net *net = dev_net(in_dev->dev);  in igmp_heard_report()
909 	for_each_pmc_rcu(in_dev, im) {  in igmp_heard_report()
920 static bool igmp_heard_query(struct in_device *in_dev, struct sk_buff *skb,  in igmp_heard_query()  argument
929 	struct net		*net = dev_net(in_dev->dev);  in igmp_heard_query()
937 			in_dev->mr_v1_seen = jiffies +  in igmp_heard_query()
943 			in_dev->mr_v2_seen = jiffies +  in igmp_heard_query()
947 		in_dev->mr_ifc_count = 0;  in igmp_heard_query()
948 		if (del_timer(&in_dev->mr_ifc_timer))  in igmp_heard_query()
949 			__in_dev_put(in_dev);  in igmp_heard_query()
951 		igmpv3_clear_delrec(in_dev);  in igmp_heard_query()
954 	} else if (IGMP_V1_SEEN(in_dev)) {  in igmp_heard_query()
958 	} else if (IGMP_V2_SEEN(in_dev)) {  in igmp_heard_query()
983 		in_dev->mr_maxdelay = max_delay;  in igmp_heard_query()
985 			in_dev->mr_qrv = ih3->qrv;  in igmp_heard_query()
989 			igmp_gq_start_timer(in_dev);  in igmp_heard_query()
1007 	for_each_pmc_rcu(in_dev, im) {  in igmp_heard_query()
1038 	struct in_device *in_dev;  in igmp_rcv()  local
1048 	in_dev = __in_dev_get_rcu(dev);  in igmp_rcv()
1049 	if (!in_dev)  in igmp_rcv()
1061 		dropped = igmp_heard_query(in_dev, skb, len);  in igmp_rcv()
1071 			dropped = igmp_heard_report(in_dev, ih->group);  in igmp_rcv()
1103 static void ip_mc_filter_add(struct in_device *in_dev, __be32 addr)  in ip_mc_filter_add()  argument
1106 	struct net_device *dev = in_dev->dev;  in ip_mc_filter_add()
1123 static void ip_mc_filter_del(struct in_device *in_dev, __be32 addr)  in ip_mc_filter_del()  argument
1126 	struct net_device *dev = in_dev->dev;  in ip_mc_filter_del()
1136 static void igmpv3_add_delrec(struct in_device *in_dev, struct ip_mc_list *im)  in igmpv3_add_delrec()  argument
1139 	struct net *net = dev_net(in_dev->dev);  in igmpv3_add_delrec()
1153 	in_dev_hold(in_dev);  in igmpv3_add_delrec()
1155 	pmc->crcount = in_dev->mr_qrv ?: net->ipv4.sysctl_igmp_qrv;  in igmpv3_add_delrec()
1168 	spin_lock_bh(&in_dev->mc_tomb_lock);  in igmpv3_add_delrec()
1169 	pmc->next = in_dev->mc_tomb;  in igmpv3_add_delrec()
1170 	in_dev->mc_tomb = pmc;  in igmpv3_add_delrec()
1171 	spin_unlock_bh(&in_dev->mc_tomb_lock);  in igmpv3_add_delrec()
1177 static void igmpv3_del_delrec(struct in_device *in_dev, struct ip_mc_list *im)  in igmpv3_del_delrec()  argument
1181 	struct net *net = dev_net(in_dev->dev);  in igmpv3_del_delrec()
1184 	spin_lock_bh(&in_dev->mc_tomb_lock);  in igmpv3_del_delrec()
1186 	for (pmc = in_dev->mc_tomb; pmc; pmc = pmc->next) {  in igmpv3_del_delrec()
1195 			in_dev->mc_tomb = pmc->next;  in igmpv3_del_delrec()
1197 	spin_unlock_bh(&in_dev->mc_tomb_lock);  in igmpv3_del_delrec()
1206 				psf->sf_crcount = in_dev->mr_qrv ?: net->ipv4.sysctl_igmp_qrv;  in igmpv3_del_delrec()
1208 			im->crcount = in_dev->mr_qrv ?: net->ipv4.sysctl_igmp_qrv;  in igmpv3_del_delrec()
1219 static void igmpv3_clear_delrec(struct in_device *in_dev)  in igmpv3_clear_delrec()  argument
1223 	spin_lock_bh(&in_dev->mc_tomb_lock);  in igmpv3_clear_delrec()
1224 	pmc = in_dev->mc_tomb;  in igmpv3_clear_delrec()
1225 	in_dev->mc_tomb = NULL;  in igmpv3_clear_delrec()
1226 	spin_unlock_bh(&in_dev->mc_tomb_lock);  in igmpv3_clear_delrec()
1236 	for_each_pmc_rcu(in_dev, pmc) {  in igmpv3_clear_delrec()
1254 	struct in_device *in_dev = im->interface;  in igmp_group_dropped()  local
1256 	struct net *net = dev_net(in_dev->dev);  in igmp_group_dropped()
1262 		ip_mc_filter_del(in_dev, im->multiaddr);  in igmp_group_dropped()
1274 	if (!in_dev->dead) {  in igmp_group_dropped()
1275 		if (IGMP_V1_SEEN(in_dev))  in igmp_group_dropped()
1277 		if (IGMP_V2_SEEN(in_dev)) {  in igmp_group_dropped()
1279 				igmp_send_report(in_dev, im, IGMP_HOST_LEAVE_MESSAGE);  in igmp_group_dropped()
1283 		igmpv3_add_delrec(in_dev, im);  in igmp_group_dropped()
1285 		igmp_ifc_event(in_dev);  in igmp_group_dropped()
1292 	struct in_device *in_dev = im->interface;  in igmp_group_added()  local
1294 	struct net *net = dev_net(in_dev->dev);  in igmp_group_added()
1299 		ip_mc_filter_add(in_dev, im->multiaddr);  in igmp_group_added()
1308 	if (in_dev->dead)  in igmp_group_added()
1312 	if (IGMP_V1_SEEN(in_dev) || IGMP_V2_SEEN(in_dev)) {  in igmp_group_added()
1325 		im->crcount = in_dev->mr_qrv ?: net->ipv4.sysctl_igmp_qrv;  in igmp_group_added()
1327 	igmp_ifc_event(in_dev);  in igmp_group_added()
1341 static void ip_mc_hash_add(struct in_device *in_dev,  in ip_mc_hash_add()  argument
1347 	mc_hash = rtnl_dereference(in_dev->mc_hash);  in ip_mc_hash_add()
1356 	if (in_dev->mc_count < 4)  in ip_mc_hash_add()
1364 	for_each_pmc_rtnl(in_dev, im) {  in ip_mc_hash_add()
1370 	rcu_assign_pointer(in_dev->mc_hash, mc_hash);  in ip_mc_hash_add()
1373 static void ip_mc_hash_remove(struct in_device *in_dev,  in ip_mc_hash_remove()  argument
1376 	struct ip_mc_list __rcu **mc_hash = rtnl_dereference(in_dev->mc_hash);  in ip_mc_hash_remove()
1391 static void __ip_mc_inc_group(struct in_device *in_dev, __be32 addr,  in __ip_mc_inc_group()  argument
1398 	for_each_pmc_rtnl(in_dev, im) {  in __ip_mc_inc_group()
1401 			ip_mc_add_src(in_dev, &addr, mode, 0, NULL, 0);  in __ip_mc_inc_group()
1411 	im->interface = in_dev;  in __ip_mc_inc_group()
1412 	in_dev_hold(in_dev);  in __ip_mc_inc_group()
1423 	im->next_rcu = in_dev->mc_list;  in __ip_mc_inc_group()
1424 	in_dev->mc_count++;  in __ip_mc_inc_group()
1425 	rcu_assign_pointer(in_dev->mc_list, im);  in __ip_mc_inc_group()
1427 	ip_mc_hash_add(in_dev, im);  in __ip_mc_inc_group()
1430 	igmpv3_del_delrec(in_dev, im);  in __ip_mc_inc_group()
1433 	if (!in_dev->dead)  in __ip_mc_inc_group()
1434 		ip_rt_multicast_event(in_dev);  in __ip_mc_inc_group()
1439 void ip_mc_inc_group(struct in_device *in_dev, __be32 addr)  in ip_mc_inc_group()  argument
1441 	__ip_mc_inc_group(in_dev, addr, MCAST_EXCLUDE);  in ip_mc_inc_group()
1613 static void ip_mc_rejoin_groups(struct in_device *in_dev)  in ip_mc_rejoin_groups()  argument
1618 	struct net *net = dev_net(in_dev->dev);  in ip_mc_rejoin_groups()
1622 	for_each_pmc_rtnl(in_dev, im) {  in ip_mc_rejoin_groups()
1632 		if (IGMP_V1_SEEN(in_dev))  in ip_mc_rejoin_groups()
1634 		else if (IGMP_V2_SEEN(in_dev))  in ip_mc_rejoin_groups()
1638 		igmp_send_report(in_dev, im, type);  in ip_mc_rejoin_groups()
1647 void ip_mc_dec_group(struct in_device *in_dev, __be32 addr)  in ip_mc_dec_group()  argument
1654 	for (ip = &in_dev->mc_list;  in ip_mc_dec_group()
1659 				ip_mc_hash_remove(in_dev, i);  in ip_mc_dec_group()
1661 				in_dev->mc_count--;  in ip_mc_dec_group()
1665 				if (!in_dev->dead)  in ip_mc_dec_group()
1666 					ip_rt_multicast_event(in_dev);  in ip_mc_dec_group()
1679 void ip_mc_unmap(struct in_device *in_dev)  in ip_mc_unmap()  argument
1685 	for_each_pmc_rtnl(in_dev, pmc)  in ip_mc_unmap()
1689 void ip_mc_remap(struct in_device *in_dev)  in ip_mc_remap()  argument
1695 	for_each_pmc_rtnl(in_dev, pmc) {  in ip_mc_remap()
1697 		igmpv3_del_delrec(in_dev, pmc);  in ip_mc_remap()
1705 void ip_mc_down(struct in_device *in_dev)  in ip_mc_down()  argument
1711 	for_each_pmc_rtnl(in_dev, pmc)  in ip_mc_down()
1715 	in_dev->mr_ifc_count = 0;  in ip_mc_down()
1716 	if (del_timer(&in_dev->mr_ifc_timer))  in ip_mc_down()
1717 		__in_dev_put(in_dev);  in ip_mc_down()
1718 	in_dev->mr_gq_running = 0;  in ip_mc_down()
1719 	if (del_timer(&in_dev->mr_gq_timer))  in ip_mc_down()
1720 		__in_dev_put(in_dev);  in ip_mc_down()
1723 	ip_mc_dec_group(in_dev, IGMP_ALL_HOSTS);  in ip_mc_down()
1726 void ip_mc_init_dev(struct in_device *in_dev)  in ip_mc_init_dev()  argument
1729 	struct net *net = dev_net(in_dev->dev);  in ip_mc_init_dev()
1734 	timer_setup(&in_dev->mr_gq_timer, igmp_gq_timer_expire, 0);  in ip_mc_init_dev()
1735 	timer_setup(&in_dev->mr_ifc_timer, igmp_ifc_timer_expire, 0);  in ip_mc_init_dev()
1736 	in_dev->mr_qrv = net->ipv4.sysctl_igmp_qrv;  in ip_mc_init_dev()
1739 	spin_lock_init(&in_dev->mc_tomb_lock);  in ip_mc_init_dev()
1744 void ip_mc_up(struct in_device *in_dev)  in ip_mc_up()  argument
1748 	struct net *net = dev_net(in_dev->dev);  in ip_mc_up()
1754 	in_dev->mr_qrv = net->ipv4.sysctl_igmp_qrv;  in ip_mc_up()
1756 	ip_mc_inc_group(in_dev, IGMP_ALL_HOSTS);  in ip_mc_up()
1758 	for_each_pmc_rtnl(in_dev, pmc) {  in ip_mc_up()
1760 		igmpv3_del_delrec(in_dev, pmc);  in ip_mc_up()
1770 void ip_mc_destroy_dev(struct in_device *in_dev)  in ip_mc_destroy_dev()  argument
1777 	ip_mc_down(in_dev);  in ip_mc_destroy_dev()
1779 	igmpv3_clear_delrec(in_dev);  in ip_mc_destroy_dev()
1782 	while ((i = rtnl_dereference(in_dev->mc_list)) != NULL) {  in ip_mc_destroy_dev()
1783 		in_dev->mc_list = i->next_rcu;  in ip_mc_destroy_dev()
1784 		in_dev->mc_count--;  in ip_mc_destroy_dev()
1847 		struct in_device *in_dev = pmc->interface;  in ip_mc_del1_src()  local
1848 		struct net *net = dev_net(in_dev->dev);  in ip_mc_del1_src()
1858 		    !IGMP_V1_SEEN(in_dev) && !IGMP_V2_SEEN(in_dev)) {  in ip_mc_del1_src()
1859 			psf->sf_crcount = in_dev->mr_qrv ?: net->ipv4.sysctl_igmp_qrv;  in ip_mc_del1_src()
1874 static int ip_mc_del_src(struct in_device *in_dev, __be32 *pmca, int sfmode,  in ip_mc_del_src()  argument
1881 	if (!in_dev)  in ip_mc_del_src()
1884 	for_each_pmc_rcu(in_dev, pmc) {  in ip_mc_del_src()
1917 		struct net *net = dev_net(in_dev->dev);  in ip_mc_del_src()
1923 		pmc->crcount = in_dev->mr_qrv ?: net->ipv4.sysctl_igmp_qrv;  in ip_mc_del_src()
1924 		in_dev->mr_ifc_count = pmc->crcount;  in ip_mc_del_src()
2046 static int ip_mc_add_src(struct in_device *in_dev, __be32 *pmca, int sfmode,  in ip_mc_add_src()  argument
2053 	if (!in_dev)  in ip_mc_add_src()
2056 	for_each_pmc_rcu(in_dev, pmc) {  in ip_mc_add_src()
2091 		in_dev = pmc->interface;  in ip_mc_add_src()
2102 		pmc->crcount = in_dev->mr_qrv ?: net->ipv4.sysctl_igmp_qrv;  in ip_mc_add_src()
2103 		in_dev->mr_ifc_count = pmc->crcount;  in ip_mc_add_src()
2106 		igmp_ifc_event(in_dev);  in ip_mc_add_src()
2108 		igmp_ifc_event(in_dev);  in ip_mc_add_src()
2146 	struct in_device *in_dev;  in __ip_mc_join_group()  local
2158 	in_dev = ip_mc_find_dev(net, imr);  in __ip_mc_join_group()
2160 	if (!in_dev) {  in __ip_mc_join_group()
2185 	__ip_mc_inc_group(in_dev, addr, mode);  in __ip_mc_join_group()
2208 			   struct in_device *in_dev)  in ip_mc_leave_src()  argument
2215 		return ip_mc_del_src(in_dev, &iml->multi.imr_multiaddr.s_addr,  in ip_mc_leave_src()
2218 	err = ip_mc_del_src(in_dev, &iml->multi.imr_multiaddr.s_addr,  in ip_mc_leave_src()
2232 	struct in_device *in_dev;  in ip_mc_leave_group()  local
2240 	in_dev = ip_mc_find_dev(net, imr);  in ip_mc_leave_group()
2241 	if (!imr->imr_ifindex && !imr->imr_address.s_addr && !in_dev) {  in ip_mc_leave_group()
2258 		(void) ip_mc_leave_src(sk, iml, in_dev);  in ip_mc_leave_group()
2262 		if (in_dev)  in ip_mc_leave_group()
2263 			ip_mc_dec_group(in_dev, group);  in ip_mc_leave_group()
2282 	struct in_device *in_dev = NULL;  in ip_mc_source()  local
2297 	in_dev = ip_mc_find_dev(net, &imr);  in ip_mc_source()
2299 	if (!in_dev) {  in ip_mc_source()
2323 		ip_mc_add_src(in_dev, &mreqs->imr_multiaddr, omode, 0, NULL, 0);  in ip_mc_source()
2324 		ip_mc_del_src(in_dev, &mreqs->imr_multiaddr, pmc->sfmode, 0,  in ip_mc_source()
2350 		ip_mc_del_src(in_dev, &mreqs->imr_multiaddr, omode, 1,  in ip_mc_source()
2403 	ip_mc_add_src(in_dev, &mreqs->imr_multiaddr, omode, 1,  in ip_mc_source()
2417 	struct in_device *in_dev;  in ip_mc_msfilter()  local
2434 	in_dev = ip_mc_find_dev(net, &imr);  in ip_mc_msfilter()
2436 	if (!in_dev) {  in ip_mc_msfilter()
2466 		err = ip_mc_add_src(in_dev, &msf->imsf_multiaddr,  in ip_mc_msfilter()
2474 		(void) ip_mc_add_src(in_dev, &msf->imsf_multiaddr,  in ip_mc_msfilter()
2479 		(void) ip_mc_del_src(in_dev, &msf->imsf_multiaddr, pmc->sfmode,  in ip_mc_msfilter()
2485 		(void) ip_mc_del_src(in_dev, &msf->imsf_multiaddr, pmc->sfmode,  in ip_mc_msfilter()
2503 	struct in_device *in_dev;  in ip_mc_msfget()  local
2516 	in_dev = ip_mc_find_dev(net, &imr);  in ip_mc_msfget()
2518 	if (!in_dev) {  in ip_mc_msfget()
2668 		struct in_device *in_dev;  in ip_mc_drop_socket()  local
2671 		in_dev = inetdev_by_index(net, iml->multi.imr_ifindex);  in ip_mc_drop_socket()
2672 		(void) ip_mc_leave_src(sk, iml, in_dev);  in ip_mc_drop_socket()
2673 		if (in_dev)  in ip_mc_drop_socket()
2674 			ip_mc_dec_group(in_dev, iml->multi.imr_multiaddr.s_addr);  in ip_mc_drop_socket()
2683 int ip_check_mc_rcu(struct in_device *in_dev, __be32 mc_addr, __be32 src_addr, u8 proto)  in ip_check_mc_rcu()  argument
2690 	mc_hash = rcu_dereference(in_dev->mc_hash);  in ip_check_mc_rcu()
2701 		for_each_pmc_rcu(in_dev, im) {  in ip_check_mc_rcu()
2730 	struct in_device *in_dev;  member
2741 	state->in_dev = NULL;  in igmp_mc_get_first()
2743 		struct in_device *in_dev;  in igmp_mc_get_first()  local
2745 		in_dev = __in_dev_get_rcu(state->dev);  in igmp_mc_get_first()
2746 		if (!in_dev)  in igmp_mc_get_first()
2748 		im = rcu_dereference(in_dev->mc_list);  in igmp_mc_get_first()
2750 			state->in_dev = in_dev;  in igmp_mc_get_first()
2765 			state->in_dev = NULL;  in igmp_mc_get_next()
2768 		state->in_dev = __in_dev_get_rcu(state->dev);  in igmp_mc_get_next()
2769 		if (!state->in_dev)  in igmp_mc_get_next()
2771 		im = rcu_dereference(state->in_dev->mc_list);  in igmp_mc_get_next()
2808 	state->in_dev = NULL;  in igmp_mc_seq_stop()
2825 		querier = IGMP_V1_SEEN(state->in_dev) ? "V1" :  in igmp_mc_seq_show()
2826 			  IGMP_V2_SEEN(state->in_dev) ? "V2" :  in igmp_mc_seq_show()
2832 		if (rcu_access_pointer(state->in_dev->mc_list) == im) {  in igmp_mc_seq_show()
2834 				   state->dev->ifindex, state->dev->name, state->in_dev->mc_count, querier);  in igmp_mc_seq_show()
3036 	struct in_device *in_dev;  in igmp_netdev_event()  local
3040 		in_dev = __in_dev_get_rtnl(dev);  in igmp_netdev_event()
3041 		if (in_dev)  in igmp_netdev_event()
3042 			ip_mc_rejoin_groups(in_dev);  in igmp_netdev_event()