187 static void inet_del_ifa(struct in_device *in_dev, struct in_ifaddr **ifap,
242 	struct in_device *in_dev;  in inetdev_init()  local
247 	in_dev = kzalloc(sizeof(*in_dev), GFP_KERNEL);  in inetdev_init()
248 	if (!in_dev)  in inetdev_init()
250 	memcpy(&in_dev->cnf, dev_net(dev)->ipv4.devconf_dflt,  in inetdev_init()
251 			sizeof(in_dev->cnf));  in inetdev_init()
252 	in_dev->cnf.sysctl = NULL;  in inetdev_init()
253 	in_dev->dev = dev;  in inetdev_init()
254 	in_dev->arp_parms = neigh_parms_alloc(dev, &arp_tbl);  in inetdev_init()
255 	if (!in_dev->arp_parms)  in inetdev_init()
257 	if (IPV4_DEVCONF(in_dev->cnf, FORWARDING))  in inetdev_init()
262 	refcount_set(&in_dev->refcnt, 1);  in inetdev_init()
264 	err = devinet_sysctl_register(in_dev);  in inetdev_init()
266 		in_dev->dead = 1;  in inetdev_init()
267 		in_dev_put(in_dev);  in inetdev_init()
268 		in_dev = NULL;  in inetdev_init()
271 	ip_mc_init_dev(in_dev);  in inetdev_init()
273 		ip_mc_up(in_dev);  in inetdev_init()
276 	rcu_assign_pointer(dev->ip_ptr, in_dev);  in inetdev_init()
278 	return in_dev ?: ERR_PTR(err);  in inetdev_init()
280 	kfree(in_dev);  in inetdev_init()
281 	in_dev = NULL;  in inetdev_init()
291 static void inetdev_destroy(struct in_device *in_dev)  in inetdev_destroy()  argument
298 	dev = in_dev->dev;  in inetdev_destroy()
300 	in_dev->dead = 1;  in inetdev_destroy()
302 	ip_mc_destroy_dev(in_dev);  in inetdev_destroy()
304 	while ((ifa = in_dev->ifa_list) != NULL) {  in inetdev_destroy()
305 		inet_del_ifa(in_dev, &in_dev->ifa_list, 0);  in inetdev_destroy()
311 	devinet_sysctl_unregister(in_dev);  in inetdev_destroy()
312 	neigh_parms_release(&arp_tbl, in_dev->arp_parms);  in inetdev_destroy()
315 	call_rcu(&in_dev->rcu_head, in_dev_rcu_put);  in inetdev_destroy()
318 int inet_addr_onlink(struct in_device *in_dev, __be32 a, __be32 b)  in inet_addr_onlink()  argument
321 	for_primary_ifa(in_dev) {  in inet_addr_onlink()
328 	} endfor_ifa(in_dev);  in inet_addr_onlink()
333 static void __inet_del_ifa(struct in_device *in_dev, struct in_ifaddr **ifap,  in __inet_del_ifa()  argument
338 	struct in_ifaddr *last_prim = in_dev->ifa_list;  in __inet_del_ifa()
340 	int do_promote = IN_DEV_PROMOTE_SECONDARIES(in_dev);  in __inet_del_ifa()
344 	if (in_dev->dead)  in __inet_del_ifa()
437 static void inet_del_ifa(struct in_device *in_dev, struct in_ifaddr **ifap,  in inet_del_ifa()  argument
440 	__inet_del_ifa(in_dev, ifap, destroy, NULL, 0);  in inet_del_ifa()
450 	struct in_device *in_dev = ifa->ifa_dev;  in __inet_insert_ifa()  local
463 	last_primary = &in_dev->ifa_list;  in __inet_insert_ifa()
465 	for (ifap = &in_dev->ifa_list; (ifa1 = *ifap) != NULL;  in __inet_insert_ifa()
510 	inet_hash_insert(dev_net(in_dev->dev), ifa);  in __inet_insert_ifa()
531 	struct in_device *in_dev = __in_dev_get_rtnl(dev);  in inet_set_ifa()  local
535 	if (!in_dev) {  in inet_set_ifa()
539 	ipv4_devconf_setall(in_dev);  in inet_set_ifa()
540 	neigh_parms_data_state_setall(in_dev->arp_parms);  in inet_set_ifa()
541 	if (ifa->ifa_dev != in_dev) {  in inet_set_ifa()
543 		in_dev_hold(in_dev);  in inet_set_ifa()
544 		ifa->ifa_dev = in_dev;  in inet_set_ifa()
557 	struct in_device *in_dev = NULL;  in inetdev_by_index()  local
562 		in_dev = rcu_dereference_rtnl(dev->ip_ptr);  in inetdev_by_index()
564 	return in_dev;  in inetdev_by_index()
570 struct in_ifaddr *inet_ifa_byprefix(struct in_device *in_dev, __be32 prefix,  in inet_ifa_byprefix()  argument
575 	for_primary_ifa(in_dev) {  in inet_ifa_byprefix()
578 	} endfor_ifa(in_dev);  in inet_ifa_byprefix()
607 	struct in_device *in_dev;  in inet_rtm_deladdr()  local
620 	in_dev = inetdev_by_index(net, ifm->ifa_index);  in inet_rtm_deladdr()
621 	if (!in_dev) {  in inet_rtm_deladdr()
626 	for (ifap = &in_dev->ifa_list; (ifa = *ifap) != NULL;  in inet_rtm_deladdr()
642 		__inet_del_ifa(in_dev, ifap, 1, nlh, NETLINK_CB(skb).portid);  in inet_rtm_deladdr()
782 	struct in_device *in_dev;  in rtm_to_ifaddr()  local
800 	in_dev = __in_dev_get_rtnl(dev);  in rtm_to_ifaddr()
802 	if (!in_dev)  in rtm_to_ifaddr()
813 	ipv4_devconf_setall(in_dev);  in rtm_to_ifaddr()
814 	neigh_parms_data_state_setall(in_dev->arp_parms);  in rtm_to_ifaddr()
815 	in_dev_hold(in_dev);  in rtm_to_ifaddr()
826 	ifa->ifa_dev = in_dev;  in rtm_to_ifaddr()
864 	struct in_device *in_dev = ifa->ifa_dev;  in find_matching_ifa()  local
870 	for (ifap = &in_dev->ifa_list; (ifa1 = *ifap) != NULL;  in find_matching_ifa()
965 	struct in_device *in_dev;  in devinet_ioctl()  local
1029 	in_dev = __in_dev_get_rtnl(dev);  in devinet_ioctl()
1030 	if (in_dev) {  in devinet_ioctl()
1037 			for (ifap = &in_dev->ifa_list; (ifa = *ifap) != NULL;  in devinet_ioctl()
1050 			for (ifap = &in_dev->ifa_list; (ifa = *ifap) != NULL;  in devinet_ioctl()
1089 				inet_del_ifa(in_dev, ifap, 1);  in devinet_ioctl()
1114 			inet_del_ifa(in_dev, ifap, 0);  in devinet_ioctl()
1139 			inet_del_ifa(in_dev, ifap, 0);  in devinet_ioctl()
1153 		inet_del_ifa(in_dev, ifap, 0);  in devinet_ioctl()
1169 			inet_del_ifa(in_dev, ifap, 0);  in devinet_ioctl()
1198 	struct in_device *in_dev = __in_dev_get_rtnl(dev);  in inet_gifconf()  local
1206 	if (!in_dev)  in inet_gifconf()
1209 	for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {  in inet_gifconf()
1234 static __be32 in_dev_select_addr(const struct in_device *in_dev,  in in_dev_select_addr()  argument
1237 	for_primary_ifa(in_dev) {  in in_dev_select_addr()
1241 	} endfor_ifa(in_dev);  in in_dev_select_addr()
1249 	struct in_device *in_dev;  in inet_select_addr()  local
1254 	in_dev = __in_dev_get_rcu(dev);  in inet_select_addr()
1255 	if (!in_dev)  in inet_select_addr()
1258 	for_primary_ifa(in_dev) {  in inet_select_addr()
1267 	} endfor_ifa(in_dev);  in inet_select_addr()
1281 	    (in_dev = __in_dev_get_rcu(dev))) {  in inet_select_addr()
1282 		addr = in_dev_select_addr(in_dev, scope);  in inet_select_addr()
1295 		in_dev = __in_dev_get_rcu(dev);  in inet_select_addr()
1296 		if (!in_dev)  in inet_select_addr()
1299 		addr = in_dev_select_addr(in_dev, scope);  in inet_select_addr()
1309 static __be32 confirm_addr_indev(struct in_device *in_dev, __be32 dst,  in confirm_addr_indev()  argument
1315 	for_ifa(in_dev) {  in confirm_addr_indev()
1341 	} endfor_ifa(in_dev);  in confirm_addr_indev()
1354 __be32 inet_confirm_addr(struct net *net, struct in_device *in_dev,  in inet_confirm_addr()  argument
1360 	if (in_dev)  in inet_confirm_addr()
1361 		return confirm_addr_indev(in_dev, dst, local, scope);  in inet_confirm_addr()
1365 		in_dev = __in_dev_get_rcu(dev);  in inet_confirm_addr()
1366 		if (in_dev) {  in inet_confirm_addr()
1367 			addr = confirm_addr_indev(in_dev, dst, local, scope);  in inet_confirm_addr()
1410 static void inetdev_changename(struct net_device *dev, struct in_device *in_dev)  in inetdev_changename()  argument
1415 	for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {  in inetdev_changename()
1442 					struct in_device *in_dev)  in inetdev_send_gratuitous_arp()  argument
1447 	for (ifa = in_dev->ifa_list; ifa;  in inetdev_send_gratuitous_arp()
1462 	struct in_device *in_dev = __in_dev_get_rtnl(dev);  in inetdev_event()  local
1466 	if (!in_dev) {  in inetdev_event()
1468 			in_dev = inetdev_init(dev);  in inetdev_event()
1469 			if (IS_ERR(in_dev))  in inetdev_event()
1470 				return notifier_from_errno(PTR_ERR(in_dev));  in inetdev_event()
1472 				IN_DEV_CONF_SET(in_dev, NOXFRM, 1);  in inetdev_event()
1473 				IN_DEV_CONF_SET(in_dev, NOPOLICY, 1);  in inetdev_event()
1478 				in_dev = inetdev_init(dev);  in inetdev_event()
1500 				in_dev_hold(in_dev);  in inetdev_event()
1501 				ifa->ifa_dev = in_dev;  in inetdev_event()
1506 				ipv4_devconf_setall(in_dev);  in inetdev_event()
1507 				neigh_parms_data_state_setall(in_dev->arp_parms);  in inetdev_event()
1511 		ip_mc_up(in_dev);  in inetdev_event()
1514 		if (!IN_DEV_ARP_NOTIFY(in_dev))  in inetdev_event()
1519 		inetdev_send_gratuitous_arp(dev, in_dev);  in inetdev_event()
1522 		ip_mc_down(in_dev);  in inetdev_event()
1525 		ip_mc_unmap(in_dev);  in inetdev_event()
1528 		ip_mc_remap(in_dev);  in inetdev_event()
1536 		inetdev_destroy(in_dev);  in inetdev_event()
1542 		inetdev_changename(dev, in_dev);  in inetdev_event()
1544 		devinet_sysctl_unregister(in_dev);  in inetdev_event()
1545 		devinet_sysctl_register(in_dev);  in inetdev_event()
1655 	struct in_device *in_dev;  in inet_dump_ifaddr()  local
1674 			in_dev = __in_dev_get_rcu(dev);  in inet_dump_ifaddr()
1675 			if (!in_dev)  in inet_dump_ifaddr()
1678 			for (ifa = in_dev->ifa_list, ip_idx = 0; ifa;  in inet_dump_ifaddr()
1735 	struct in_device *in_dev = rcu_dereference_rtnl(dev->ip_ptr);  in inet_get_link_af_size()  local
1737 	if (!in_dev)  in inet_get_link_af_size()
1746 	struct in_device *in_dev = rcu_dereference_rtnl(dev->ip_ptr);  in inet_fill_link_af()  local
1750 	if (!in_dev)  in inet_fill_link_af()
1758 		((u32 *) nla_data(nla))[i] = in_dev->cnf.data[i];  in inet_fill_link_af()
1797 	struct in_device *in_dev = __in_dev_get_rcu(dev);  in inet_set_link_af()  local
1801 	if (!in_dev)  in inet_set_link_af()
1809 			ipv4_devconf_set(in_dev, nla_type(a), nla_get_u32(a));  in inet_set_link_af()
1942 	struct in_device *in_dev;  in inet_netconf_get_devconf()  local
1968 		in_dev = __in_dev_get_rtnl(dev);  in inet_netconf_get_devconf()
1969 		if (!in_dev)  in inet_netconf_get_devconf()
1971 		devconf = &in_dev->cnf;  in inet_netconf_get_devconf()
2002 	struct in_device *in_dev;  in inet_netconf_dump_devconf()  local
2017 			in_dev = __in_dev_get_rcu(dev);  in inet_netconf_dump_devconf()
2018 			if (!in_dev)  in inet_netconf_dump_devconf()
2022 						      &in_dev->cnf,  in inet_netconf_dump_devconf()
2074 		struct in_device *in_dev;  in devinet_copy_dflt_conf()  local
2076 		in_dev = __in_dev_get_rcu(dev);  in devinet_copy_dflt_conf()
2077 		if (in_dev && !test_bit(i, in_dev->cnf.state))  in devinet_copy_dflt_conf()
2078 			in_dev->cnf.data[i] = net->ipv4.devconf_dflt->data[i];  in devinet_copy_dflt_conf()
2101 		struct in_device *in_dev;  in inet_forward_change()  local
2106 		in_dev = __in_dev_get_rtnl(dev);  in inet_forward_change()
2107 		if (in_dev) {  in inet_forward_change()
2108 			IN_DEV_CONF_SET(in_dev, FORWARDING, on);  in inet_forward_change()
2111 						    dev->ifindex, &in_dev->cnf);  in inet_forward_change()