1 /* 2 * Copyright 2011 Daniel Drown 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 * clatd.h - main system definitions 17 */ 18 #ifndef __CLATD_H__ 19 #define __CLATD_H__ 20 21 #include <sys/uio.h> 22 23 #define MAXMTU 1500 24 #define PACKETLEN (MAXMTU+sizeof(struct tun_pi)) 25 #define CLATD_VERSION "1.4" 26 27 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) 28 29 // how frequently (in seconds) to poll for an address change while traffic is passing 30 #define INTERFACE_POLL_FREQUENCY 30 31 32 // how frequently (in seconds) to poll for an address change while there is no traffic 33 #define NO_TRAFFIC_INTERFACE_POLL_FREQUENCY 90 34 35 // A clat_packet is an array of iovec structures representing a packet that we are translating. 36 // The CLAT_POS_XXX constants represent the array indices within the clat_packet that contain 37 // specific parts of the packet. The packet_* functions operate on all the packet segments past a 38 // given position. 39 typedef enum { 40 CLAT_POS_TUNHDR, CLAT_POS_IPHDR, CLAT_POS_FRAGHDR, CLAT_POS_TRANSPORTHDR, 41 CLAT_POS_ICMPERR_IPHDR, CLAT_POS_ICMPERR_FRAGHDR, CLAT_POS_ICMPERR_TRANSPORTHDR, 42 CLAT_POS_PAYLOAD, CLAT_POS_MAX 43 } clat_packet_index; 44 typedef struct iovec clat_packet[CLAT_POS_MAX]; 45 46 #endif /* __CLATD_H__ */ 47
