1 /* 2 * Copyright 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 * 16 * tun.h - tun device functions 17 */ 18 #ifndef __TUN_H__ 19 #define __TUN_H__ 20 21 #include <linux/if.h> 22 23 #include "clatd.h" 24 #include "ring.h" 25 26 struct tun_data { 27 char device4[IFNAMSIZ]; 28 int read_fd6, write_fd6, fd4; 29 struct packet_ring ring; 30 }; 31 32 int tun_open(); 33 int tun_alloc(char *dev, int fd); 34 int send_tun(int fd, clat_packet out, int iov_len); 35 int set_nonblocking(int fd); 36 37 #endif 38