189 static int alloc_netid(struct net *net, struct net *peer, int reqid)  in alloc_netid()  argument
198 	return idr_alloc(&net->netns_ids, peer, min, max, GFP_ATOMIC);  in alloc_netid()
207 static int net_eq_idr(int id, void *net, void *peer)  in net_eq_idr()  argument
209 	if (net_eq(net, peer))  in net_eq_idr()
218 static int __peernet2id_alloc(struct net *net, struct net *peer, bool *alloc)  in __peernet2id_alloc()  argument
220 	int id = idr_for_each(&net->netns_ids, net_eq_idr, peer);  in __peernet2id_alloc()
232 		id = alloc_netid(net, peer, -1);  in __peernet2id_alloc()
241 static int __peernet2id(struct net *net, struct net *peer)  in __peernet2id()  argument
245 	return __peernet2id_alloc(net, peer, &no);  in __peernet2id()
253 int peernet2id_alloc(struct net *net, struct net *peer, gfp_t gfp)  in peernet2id_alloc()  argument
267 	if (maybe_get_net(peer))  in peernet2id_alloc()
269 	id = __peernet2id_alloc(net, peer, &alloc);  in peernet2id_alloc()
274 		put_net(peer);  in peernet2id_alloc()
280 int peernet2id(struct net *net, struct net *peer)  in peernet2id()  argument
285 	id = __peernet2id(net, peer);  in peernet2id()
294 bool peernet_has_id(struct net *net, struct net *peer)  in peernet_has_id()  argument
296 	return peernet2id(net, peer) >= 0;  in peernet_has_id()
301 	struct net *peer;  in get_net_ns_by_id()  local
307 	peer = idr_find(&net->netns_ids, id);  in get_net_ns_by_id()
308 	if (peer)  in get_net_ns_by_id()
309 		peer = maybe_get_net(peer);  in get_net_ns_by_id()
312 	return peer;  in get_net_ns_by_id()
728 	struct net *peer;  in rtnl_net_newid()  local
742 		peer = get_net_ns_by_pid(nla_get_u32(tb[NETNSA_PID]));  in rtnl_net_newid()
745 		peer = get_net_ns_by_fd(nla_get_u32(tb[NETNSA_FD]));  in rtnl_net_newid()
751 	if (IS_ERR(peer)) {  in rtnl_net_newid()
754 		return PTR_ERR(peer);  in rtnl_net_newid()
758 	if (__peernet2id(net, peer) >= 0) {  in rtnl_net_newid()
767 	err = alloc_netid(net, peer, nsid);  in rtnl_net_newid()
779 	put_net(peer);  in rtnl_net_newid()
876 	struct net *peer, *target = net;  in rtnl_net_getid()  local
885 		peer = get_net_ns_by_pid(nla_get_u32(tb[NETNSA_PID]));  in rtnl_net_getid()
888 		peer = get_net_ns_by_fd(nla_get_u32(tb[NETNSA_FD]));  in rtnl_net_getid()
891 		peer = get_net_ns_by_id(net, nla_get_s32(tb[NETNSA_NSID]));  in rtnl_net_getid()
892 		if (!peer)  in rtnl_net_getid()
893 			peer = ERR_PTR(-ENOENT);  in rtnl_net_getid()
900 	if (IS_ERR(peer)) {  in rtnl_net_getid()
903 		return PTR_ERR(peer);  in rtnl_net_getid()
918 		fillargs.ref_nsid = peernet2id(net, peer);  in rtnl_net_getid()
927 	fillargs.nsid = peernet2id(target, peer);  in rtnl_net_getid()
940 	put_net(peer);  in rtnl_net_getid()
953 static int rtnl_net_dumpid_one(int id, void *peer, void *data)  in rtnl_net_dumpid_one()  argument
963 		net_cb->fillargs.ref_nsid = __peernet2id(net_cb->ref_net, peer);  in rtnl_net_dumpid_one()