190 static void inet_del_ifa(struct in_device *in_dev,
208 static struct in_ifaddr *inet_alloc_ifa(struct in_device *in_dev)  in inet_alloc_ifa()  argument
216 	in_dev_hold(in_dev);  in inet_alloc_ifa()
217 	ifa->ifa_dev = in_dev;  in inet_alloc_ifa()
268 	struct in_device *in_dev;  in inetdev_init()  local
273 	in_dev = kzalloc(sizeof(*in_dev), GFP_KERNEL);  in inetdev_init()
274 	if (!in_dev)  in inetdev_init()
276 	memcpy(&in_dev->cnf, dev_net(dev)->ipv4.devconf_dflt,  in inetdev_init()
277 			sizeof(in_dev->cnf));  in inetdev_init()
278 	in_dev->cnf.sysctl = NULL;  in inetdev_init()
279 	in_dev->dev = dev;  in inetdev_init()
280 	in_dev->arp_parms = neigh_parms_alloc(dev, &arp_tbl);  in inetdev_init()
281 	if (!in_dev->arp_parms)  in inetdev_init()
283 	if (IPV4_DEVCONF(in_dev->cnf, FORWARDING))  in inetdev_init()
286 	netdev_hold(dev, &in_dev->dev_tracker, GFP_KERNEL);  in inetdev_init()
288 	refcount_set(&in_dev->refcnt, 1);  in inetdev_init()
291 		err = devinet_sysctl_register(in_dev);  in inetdev_init()
293 			in_dev->dead = 1;  in inetdev_init()
294 			neigh_parms_release(&arp_tbl, in_dev->arp_parms);  in inetdev_init()
295 			in_dev_put(in_dev);  in inetdev_init()
296 			in_dev = NULL;  in inetdev_init()
299 		ip_mc_init_dev(in_dev);  in inetdev_init()
301 			ip_mc_up(in_dev);  in inetdev_init()
305 	rcu_assign_pointer(dev->ip_ptr, in_dev);  in inetdev_init()
307 	return in_dev ?: ERR_PTR(err);  in inetdev_init()
309 	kfree(in_dev);  in inetdev_init()
310 	in_dev = NULL;  in inetdev_init()
314 static void inetdev_destroy(struct in_device *in_dev)  in inetdev_destroy()  argument
321 	dev = in_dev->dev;  in inetdev_destroy()
323 	in_dev->dead = 1;  in inetdev_destroy()
325 	ip_mc_destroy_dev(in_dev);  in inetdev_destroy()
327 	while ((ifa = rtnl_dereference(in_dev->ifa_list)) != NULL) {  in inetdev_destroy()
328 		inet_del_ifa(in_dev, &in_dev->ifa_list, 0);  in inetdev_destroy()
334 	devinet_sysctl_unregister(in_dev);  in inetdev_destroy()
335 	neigh_parms_release(&arp_tbl, in_dev->arp_parms);  in inetdev_destroy()
338 	in_dev_put(in_dev);  in inetdev_destroy()
343 	struct in_device *in_dev;  in inet_blackhole_dev_init()  local
346 	in_dev = inetdev_init(blackhole_netdev);  in inet_blackhole_dev_init()
349 	return PTR_ERR_OR_ZERO(in_dev);  in inet_blackhole_dev_init()
353 int inet_addr_onlink(struct in_device *in_dev, __be32 a, __be32 b)  in inet_addr_onlink()  argument
358 	in_dev_for_each_ifa_rcu(ifa, in_dev) {  in inet_addr_onlink()
370 static void __inet_del_ifa(struct in_device *in_dev,  in __inet_del_ifa()  argument
378 	int do_promote = IN_DEV_PROMOTE_SECONDARIES(in_dev);  in __inet_del_ifa()
384 	if (in_dev->dead)  in __inet_del_ifa()
483 static void inet_del_ifa(struct in_device *in_dev,  in inet_del_ifa()  argument
487 	__inet_del_ifa(in_dev, ifap, destroy, NULL, 0);  in inet_del_ifa()
494 	struct in_device *in_dev = ifa->ifa_dev;  in __inet_insert_ifa()  local
495 	struct net *net = dev_net(in_dev->dev);  in __inet_insert_ifa()
503 	last_primary = &in_dev->ifa_list;  in __inet_insert_ifa()
508 	ifap = &in_dev->ifa_list;  in __inet_insert_ifa()
557 	inet_hash_insert(dev_net(in_dev->dev), ifa);  in __inet_insert_ifa()
583 	struct in_device *in_dev = __in_dev_get_rtnl_net(dev);  in inet_set_ifa()  local
585 	ipv4_devconf_setall(in_dev);  in inet_set_ifa()
586 	neigh_parms_data_state_setall(in_dev->arp_parms);  in inet_set_ifa()
599 	struct in_device *in_dev = NULL;  in inetdev_by_index()  local
604 		in_dev = rcu_dereference_rtnl(dev->ip_ptr);  in inetdev_by_index()
606 	return in_dev;  in inetdev_by_index()
612 struct in_ifaddr *inet_ifa_byprefix(struct in_device *in_dev, __be32 prefix,  in inet_ifa_byprefix()  argument
619 	in_dev_for_each_ifa_rtnl(ifa, in_dev) {  in inet_ifa_byprefix()
658 	struct in_device *in_dev;  in inet_rtm_deladdr()  local
672 	in_dev = inetdev_by_index(net, ifm->ifa_index);  in inet_rtm_deladdr()
673 	if (!in_dev) {  in inet_rtm_deladdr()
679 	for (ifap = &in_dev->ifa_list;  in inet_rtm_deladdr()
697 		__inet_del_ifa(in_dev, ifap, 1, nlh, NETLINK_CB(skb).portid);  in inet_rtm_deladdr()
887 	struct in_device *in_dev;  in inet_rtm_to_ifa()  local
899 	in_dev = __in_dev_get_rtnl_net(dev);  in inet_rtm_to_ifa()
901 	if (!in_dev)  in inet_rtm_to_ifa()
904 	ifa = inet_alloc_ifa(in_dev);  in inet_rtm_to_ifa()
912 	ipv4_devconf_setall(in_dev);  in inet_rtm_to_ifa()
913 	neigh_parms_data_state_setall(in_dev->arp_parms);  in inet_rtm_to_ifa()
947 	struct in_device *in_dev = ifa->ifa_dev;  in find_matching_ifa()  local
950 	in_dev_for_each_ifa_rtnl_net(net, ifa1, in_dev) {  in find_matching_ifa()
1067 	struct in_device *in_dev;  in devinet_ioctl()  local
1130 	in_dev = __in_dev_get_rtnl_net(dev);  in devinet_ioctl()
1131 	if (in_dev) {  in devinet_ioctl()
1139 			for (ifap = &in_dev->ifa_list;  in devinet_ioctl()
1153 			for (ifap = &in_dev->ifa_list;  in devinet_ioctl()
1193 				inet_del_ifa(in_dev, ifap, 1);  in devinet_ioctl()
1209 			if (!in_dev)  in devinet_ioctl()
1211 			ifa = inet_alloc_ifa(in_dev);  in devinet_ioctl()
1223 			inet_del_ifa(in_dev, ifap, 0);  in devinet_ioctl()
1248 			inet_del_ifa(in_dev, ifap, 0);  in devinet_ioctl()
1262 		inet_del_ifa(in_dev, ifap, 0);  in devinet_ioctl()
1278 			inet_del_ifa(in_dev, ifap, 0);  in devinet_ioctl()
1307 	struct in_device *in_dev = __in_dev_get_rtnl_net(dev);  in inet_gifconf()  local
1315 	if (!in_dev)  in inet_gifconf()
1318 	in_dev_for_each_ifa_rtnl_net(dev_net(dev), ifa, in_dev) {  in inet_gifconf()
1343 static __be32 in_dev_select_addr(const struct in_device *in_dev,  in in_dev_select_addr()  argument
1348 	in_dev_for_each_ifa_rcu(ifa, in_dev) {  in in_dev_select_addr()
1364 	struct in_device *in_dev;  in inet_select_addr()  local
1370 	in_dev = __in_dev_get_rcu(dev);  in inet_select_addr()
1371 	if (!in_dev)  in inet_select_addr()
1374 	if (unlikely(IN_DEV_ROUTE_LOCALNET(in_dev)))  in inet_select_addr()
1377 	in_dev_for_each_ifa_rcu(ifa, in_dev) {  in inet_select_addr()
1402 	    (in_dev = __in_dev_get_rcu(dev))) {  in inet_select_addr()
1403 		addr = in_dev_select_addr(in_dev, scope);  in inet_select_addr()
1416 		in_dev = __in_dev_get_rcu(dev);  in inet_select_addr()
1417 		if (!in_dev)  in inet_select_addr()
1420 		addr = in_dev_select_addr(in_dev, scope);  in inet_select_addr()
1430 static __be32 confirm_addr_indev(struct in_device *in_dev, __be32 dst,  in confirm_addr_indev()  argument
1438 	if (unlikely(IN_DEV_ROUTE_LOCALNET(in_dev)))  in confirm_addr_indev()
1441 	in_dev_for_each_ifa_rcu(ifa, in_dev) {  in confirm_addr_indev()
1482 __be32 inet_confirm_addr(struct net *net, struct in_device *in_dev,  in inet_confirm_addr()  argument
1488 	if (in_dev)  in inet_confirm_addr()
1489 		return confirm_addr_indev(in_dev, dst, local, scope);  in inet_confirm_addr()
1493 		in_dev = __in_dev_get_rcu(dev);  in inet_confirm_addr()
1494 		if (in_dev) {  in inet_confirm_addr()
1495 			addr = confirm_addr_indev(in_dev, dst, local, scope);  in inet_confirm_addr()
1538 static void inetdev_changename(struct net_device *dev, struct in_device *in_dev)  in inetdev_changename()  argument
1543 	in_dev_for_each_ifa_rtnl(ifa, in_dev) {  in inetdev_changename()
1565 					struct in_device *in_dev)  in inetdev_send_gratuitous_arp()  argument
1570 	in_dev_for_each_ifa_rtnl(ifa, in_dev) {  in inetdev_send_gratuitous_arp()
1584 	struct in_device *in_dev = __in_dev_get_rtnl(dev);  in inetdev_event()  local
1588 	if (!in_dev) {  in inetdev_event()
1590 			in_dev = inetdev_init(dev);  in inetdev_event()
1591 			if (IS_ERR(in_dev))  in inetdev_event()
1592 				return notifier_from_errno(PTR_ERR(in_dev));  in inetdev_event()
1594 				IN_DEV_CONF_SET(in_dev, NOXFRM, 1);  in inetdev_event()
1595 				IN_DEV_CONF_SET(in_dev, NOPOLICY, 1);  in inetdev_event()
1600 				in_dev = inetdev_init(dev);  in inetdev_event()
1614 			struct in_ifaddr *ifa = inet_alloc_ifa(in_dev);  in inetdev_event()
1625 				ipv4_devconf_setall(in_dev);  in inetdev_event()
1626 				neigh_parms_data_state_setall(in_dev->arp_parms);  in inetdev_event()
1630 		ip_mc_up(in_dev);  in inetdev_event()
1633 		if (!IN_DEV_ARP_NOTIFY(in_dev))  in inetdev_event()
1638 		inetdev_send_gratuitous_arp(dev, in_dev);  in inetdev_event()
1641 		ip_mc_down(in_dev);  in inetdev_event()
1644 		ip_mc_unmap(in_dev);  in inetdev_event()
1647 		ip_mc_remap(in_dev);  in inetdev_event()
1655 		inetdev_destroy(in_dev);  in inetdev_event()
1661 		inetdev_changename(dev, in_dev);  in inetdev_event()
1663 		devinet_sysctl_unregister(in_dev);  in inetdev_event()
1664 		devinet_sysctl_register(in_dev);  in inetdev_event()
1841 static int in_dev_dump_ifmcaddr(struct in_device *in_dev, struct sk_buff *skb,  in in_dev_dump_ifmcaddr()  argument
1849 	for (im = rcu_dereference(in_dev->mc_list);  in in_dev_dump_ifmcaddr()
1856 		err = inet_fill_ifmcaddr(skb, in_dev->dev, im, fillargs);  in in_dev_dump_ifmcaddr()
1870 static int in_dev_dump_ifaddr(struct in_device *in_dev, struct sk_buff *skb,  in in_dev_dump_ifaddr()  argument
1878 	in_dev_for_each_ifa_rcu(ifa, in_dev) {  in in_dev_dump_ifaddr()
1898 static int in_dev_dump_addr(struct in_device *in_dev, struct sk_buff *skb,  in in_dev_dump_addr()  argument
1904 		return in_dev_dump_ifaddr(in_dev, skb, cb, s_ip_idx, fillargs);  in in_dev_dump_addr()
1906 		return in_dev_dump_ifmcaddr(in_dev, skb, cb, s_ip_idx,  in in_dev_dump_addr()
1945 	struct in_device *in_dev;  in inet_dump_addr()  local
1962 			in_dev = __in_dev_get_rcu(dev);  in inet_dump_addr()
1963 			if (!in_dev)  in inet_dump_addr()
1965 			err = in_dev_dump_addr(in_dev, skb, cb, &ctx->ip_idx,  in inet_dump_addr()
1974 		in_dev = __in_dev_get_rcu(dev);  in inet_dump_addr()
1975 		if (!in_dev)  in inet_dump_addr()
1977 		err = in_dev_dump_addr(in_dev, skb, cb, &ctx->ip_idx,  in inet_dump_addr()
2034 	struct in_device *in_dev = rcu_dereference_rtnl(dev->ip_ptr);  in inet_get_link_af_size()  local
2036 	if (!in_dev)  in inet_get_link_af_size()
2045 	struct in_device *in_dev = rcu_dereference_rtnl(dev->ip_ptr);  in inet_fill_link_af()  local
2049 	if (!in_dev)  in inet_fill_link_af()
2057 		((u32 *) nla_data(nla))[i] = READ_ONCE(in_dev->cnf.data[i]);  in inet_fill_link_af()
2099 	struct in_device *in_dev = __in_dev_get_rtnl(dev);  in inet_set_link_af()  local
2103 	if (!in_dev)  in inet_set_link_af()
2111 			ipv4_devconf_set(in_dev, nla_type(a), nla_get_u32(a));  in inet_set_link_af()
2281 	struct in_device *in_dev = NULL;  in inet_netconf_get_devconf()  local
2306 			in_dev = in_dev_get(dev);  in inet_netconf_get_devconf()
2307 		if (!in_dev)  in inet_netconf_get_devconf()
2309 		devconf = &in_dev->cnf;  in inet_netconf_get_devconf()
2330 	if (in_dev)  in inet_netconf_get_devconf()
2331 		in_dev_put(in_dev);  in inet_netconf_get_devconf()
2345 	const struct in_device *in_dev;  in inet_netconf_dump_devconf()  local
2366 		in_dev = __in_dev_get_rcu(dev);  in inet_netconf_dump_devconf()
2367 		if (!in_dev)  in inet_netconf_dump_devconf()
2370 						&in_dev->cnf,  in inet_netconf_dump_devconf()
2413 		struct in_device *in_dev;  in devinet_copy_dflt_conf()  local
2415 		in_dev = __in_dev_get_rcu(dev);  in devinet_copy_dflt_conf()
2416 		if (in_dev && !test_bit(i, in_dev->cnf.state))  in devinet_copy_dflt_conf()
2417 			in_dev->cnf.data[i] = net->ipv4.devconf_dflt->data[i];  in devinet_copy_dflt_conf()
2440 		struct in_device *in_dev;  in inet_forward_change()  local
2445 		in_dev = __in_dev_get_rtnl_net(dev);  in inet_forward_change()
2446 		if (in_dev) {  in inet_forward_change()
2447 			IN_DEV_CONF_SET(in_dev, FORWARDING, on);  in inet_forward_change()
2450 						    dev->ifindex, &in_dev->cnf);  in inet_forward_change()