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/*
* 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 MAXMRU 65536
#define PACKETLEN (MAXMRU+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__ */
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