150 static void rtnl_net_notifyid(struct net *net, struct net *peer, int cmd,
152 static int alloc_netid(struct net *net, struct net *peer, int reqid)  in alloc_netid()  argument
163 	id = idr_alloc(&net->netns_ids, peer, min, max, GFP_KERNEL);  in alloc_netid()
165 		rtnl_net_notifyid(net, peer, RTM_NEWNSID, id);  in alloc_netid()
176 static int net_eq_idr(int id, void *net, void *peer)  in net_eq_idr()  argument
178 	if (net_eq(net, peer))  in net_eq_idr()
183 static int __peernet2id(struct net *net, struct net *peer, bool alloc)  in __peernet2id()  argument
185 	int id = idr_for_each(&net->netns_ids, net_eq_idr, peer);  in __peernet2id()
196 		return alloc_netid(net, peer, -1);  in __peernet2id()
204 int peernet2id(struct net *net, struct net *peer)  in peernet2id()  argument
206 	bool alloc = atomic_read(&peer->count) == 0 ? false : true;  in peernet2id()
209 	id = __peernet2id(net, peer, alloc);  in peernet2id()
216 	struct net *peer;  in get_net_ns_by_id()  local
222 	peer = idr_find(&net->netns_ids, id);  in get_net_ns_by_id()
223 	if (peer)  in get_net_ns_by_id()
224 		get_net(peer);  in get_net_ns_by_id()
227 	return peer;  in get_net_ns_by_id()
500 	struct net *peer;  in rtnl_net_newid()  local
512 		peer = get_net_ns_by_pid(nla_get_u32(tb[NETNSA_PID]));  in rtnl_net_newid()
514 		peer = get_net_ns_by_fd(nla_get_u32(tb[NETNSA_FD]));  in rtnl_net_newid()
517 	if (IS_ERR(peer))  in rtnl_net_newid()
518 		return PTR_ERR(peer);  in rtnl_net_newid()
520 	if (__peernet2id(net, peer, false) >= 0) {  in rtnl_net_newid()
525 	err = alloc_netid(net, peer, nsid);  in rtnl_net_newid()
529 	put_net(peer);  in rtnl_net_newid()
541 			 int cmd, struct net *net, struct net *peer,  in rtnl_net_fill()  argument
560 		id = __peernet2id(net, peer, false);  in rtnl_net_fill()
580 	struct net *peer;  in rtnl_net_getid()  local
588 		peer = get_net_ns_by_pid(nla_get_u32(tb[NETNSA_PID]));  in rtnl_net_getid()
590 		peer = get_net_ns_by_fd(nla_get_u32(tb[NETNSA_FD]));  in rtnl_net_getid()
594 	if (IS_ERR(peer))  in rtnl_net_getid()
595 		return PTR_ERR(peer);  in rtnl_net_getid()
604 			    RTM_NEWNSID, net, peer, -1);  in rtnl_net_getid()
614 	put_net(peer);  in rtnl_net_getid()
626 static int rtnl_net_dumpid_one(int id, void *peer, void *data)  in rtnl_net_dumpid_one()  argument
636 			    RTM_NEWNSID, net_cb->net, peer, id);  in rtnl_net_dumpid_one()
664 static void rtnl_net_notifyid(struct net *net, struct net *peer, int cmd,  in rtnl_net_notifyid()  argument
674 	err = rtnl_net_fill(msg, 0, 0, 0, cmd, net, peer, id);  in rtnl_net_notifyid()