236  *  @snum:        port number to look up
240 int udp_lib_get_port(struct sock *sk, unsigned short snum,  in udp_lib_get_port()  argument
248 	if (!snum) {  in udp_lib_get_port()
268 			udp_lib_lport_inuse(net, snum, hslot, bitmap, sk,  in udp_lib_get_port()
271 			snum = first;  in udp_lib_get_port()
273 			 * Iterate on all possible values of snum for this hash.  in udp_lib_get_port()
278 				if (low <= snum && snum <= high &&  in udp_lib_get_port()
279 				    !test_bit(snum >> udptable->log, bitmap) &&  in udp_lib_get_port()
280 				    !inet_is_local_reserved_port(net, snum))  in udp_lib_get_port()
282 				snum += rand;  in udp_lib_get_port()
283 			} while (snum != first);  in udp_lib_get_port()
289 		hslot = udp_hashslot(udptable, net, snum);  in udp_lib_get_port()
293 			unsigned int slot2 = udp_sk(sk)->udp_portaddr_hash ^ snum;  in udp_lib_get_port()
302 			exist = udp_lib_lport_inuse2(net, snum, hslot2, sk);  in udp_lib_get_port()
305 				exist = udp_lib_lport_inuse2(net, snum, hslot2,  in udp_lib_get_port()
314 		if (udp_lib_lport_inuse(net, snum, hslot, NULL, sk, 0))  in udp_lib_get_port()
318 	inet_sk(sk)->inet_num = snum;  in udp_lib_get_port()
319 	udp_sk(sk)->udp_port_hash = snum;  in udp_lib_get_port()
320 	udp_sk(sk)->udp_portaddr_hash ^= snum;  in udp_lib_get_port()
326 			udp_sk(sk)->udp_portaddr_hash ^= snum;  in udp_lib_get_port()
357 int udp_v4_get_port(struct sock *sk, unsigned short snum)  in udp_v4_get_port()  argument
360 		ipv4_portaddr_hash(sock_net(sk), htonl(INADDR_ANY), snum);  in udp_v4_get_port()
366 	return udp_lib_get_port(sk, snum, hash2_nulladdr);  in udp_v4_get_port()