| /* |
| * Copyright 2011 Daniel Drown |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| * clatd.h - main system definitions |
| */ |
| #ifndef __CLATD_H__ |
| #define __CLATD_H__ |
| |
| #include <sys/uio.h> |
| |
| #define MAXMTU 1500 |
| #define PACKETLEN (MAXMTU + sizeof(struct tun_pi)) |
| #define CLATD_VERSION "1.4" |
| |
| #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) |
| |
| // how frequently (in seconds) to poll for an address change while traffic is passing |
| #define INTERFACE_POLL_FREQUENCY 30 |
| |
| // how frequently (in seconds) to poll for an address change while there is no traffic |
| #define NO_TRAFFIC_INTERFACE_POLL_FREQUENCY 90 |
| |
| // A clat_packet is an array of iovec structures representing a packet that we are translating. |
| // The CLAT_POS_XXX constants represent the array indices within the clat_packet that contain |
| // specific parts of the packet. The packet_* functions operate on all the packet segments past a |
| // given position. |
| typedef enum { |
| CLAT_POS_TUNHDR, |
| CLAT_POS_IPHDR, |
| CLAT_POS_FRAGHDR, |
| CLAT_POS_TRANSPORTHDR, |
| CLAT_POS_ICMPERR_IPHDR, |
| CLAT_POS_ICMPERR_FRAGHDR, |
| CLAT_POS_ICMPERR_TRANSPORTHDR, |
| CLAT_POS_PAYLOAD, |
| CLAT_POS_MAX |
| } clat_packet_index; |
| typedef struct iovec clat_packet[CLAT_POS_MAX]; |
| |
| #endif /* __CLATD_H__ */ |