1 /* 2 * Copyright 2018 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 * common.h - common definitions 17 */ 18 #ifndef __CLATD_COMMON_H__ 19 #define __CLATD_COMMON_H__ 20 21 #include <sys/uio.h> 22 23 // A clat_packet is an array of iovec structures representing a packet that we are translating. 24 // The CLAT_POS_XXX constants represent the array indices within the clat_packet that contain 25 // specific parts of the packet. The packet_* functions operate on all the packet segments past a 26 // given position. 27 typedef enum { 28 CLAT_POS_TUNHDR, 29 CLAT_POS_IPHDR, 30 CLAT_POS_FRAGHDR, 31 CLAT_POS_TRANSPORTHDR, 32 CLAT_POS_ICMPERR_IPHDR, 33 CLAT_POS_ICMPERR_FRAGHDR, 34 CLAT_POS_ICMPERR_TRANSPORTHDR, 35 CLAT_POS_PAYLOAD, 36 CLAT_POS_MAX 37 } clat_packet_index; 38 typedef struct iovec clat_packet[CLAT_POS_MAX]; 39 40 #endif /* __CLATD_COMMON_H__ */ 41