mirror of
git://git.code.sf.net/p/xtables-addons/xtables-addons
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112 lines
4.3 KiB
C
112 lines
4.3 KiB
C
/***************************************************************************
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* Copyright (C) 2004-2006 by Intra2net AG *
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* opensource@intra2net.com *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License *
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* version 2 as published by the Free Software Foundation; *
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* *
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***************************************************************************/
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#ifndef _IPT_ACCOUNT_H
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#define _IPT_ACCOUNT_H
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#define IPT_SO_SET_ACCOUNT_HANDLE_FREE (IPT_BASE_CTL + 3)
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#define IPT_SO_SET_ACCOUNT_HANDLE_FREE_ALL (IPT_BASE_CTL + 4)
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#define IPT_SO_SET_ACCOUNT_MAX IPT_SO_SET_ACCOUNT_HANDLE_FREE_ALL
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#define IPT_SO_GET_ACCOUNT_PREPARE_READ (IPT_BASE_CTL + 4)
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#define IPT_SO_GET_ACCOUNT_PREPARE_READ_FLUSH (IPT_BASE_CTL + 5)
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#define IPT_SO_GET_ACCOUNT_GET_DATA (IPT_BASE_CTL + 6)
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#define IPT_SO_GET_ACCOUNT_GET_HANDLE_USAGE (IPT_BASE_CTL + 7)
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#define IPT_SO_GET_ACCOUNT_GET_TABLE_NAMES (IPT_BASE_CTL + 8)
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#define IPT_SO_GET_ACCOUNT_MAX IPT_SO_GET_ACCOUNT_GET_TABLE_NAMES
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#define ACCOUNT_MAX_TABLES 128
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#define ACCOUNT_TABLE_NAME_LEN 32
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#define ACCOUNT_MAX_HANDLES 10
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/* Structure for the userspace part of ipt_ACCOUNT */
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struct ipt_acc_info {
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uint32_t net_ip;
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uint32_t net_mask;
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char table_name[ACCOUNT_TABLE_NAME_LEN];
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int32_t table_nr;
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};
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/* Internal table structure, generated by check_entry() */
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struct ipt_acc_table {
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char name[ACCOUNT_TABLE_NAME_LEN]; /* name of the table */
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uint32_t ip; /* base IP of network */
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uint32_t netmask; /* netmask of the network */
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unsigned char depth; /* size of network:
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0: 8 bit, 1: 16bit, 2: 24 bit */
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uint32_t refcount; /* refcount of this table.
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if zero, destroy it */
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uint32_t itemcount; /* number of IPs in this table */
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void *data; /* pointer to the actual data,
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depending on netmask */
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};
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/* Internal handle structure */
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struct ipt_acc_handle {
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uint32_t ip; /* base IP of network. Used for
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caculating the final IP during
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get_data() */
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unsigned char depth; /* size of network. See above for
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details */
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uint32_t itemcount; /* number of IPs in this table */
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void *data; /* pointer to the actual data,
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depending on size */
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};
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/* Handle structure for communication with the userspace library */
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struct ipt_acc_handle_sockopt {
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uint32_t handle_nr; /* Used for HANDLE_FREE */
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char name[ACCOUNT_TABLE_NAME_LEN]; /* Used for HANDLE_PREPARE_READ/
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HANDLE_READ_FLUSH */
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uint32_t itemcount; /* Used for HANDLE_PREPARE_READ/
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HANDLE_READ_FLUSH */
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};
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/* Used for every IP entry
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Size is 16 bytes so that 256 (class C network) * 16
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fits in one kernel (zero) page */
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struct ipt_acc_ip {
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uint32_t src_packets;
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uint32_t src_bytes;
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uint32_t dst_packets;
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uint32_t dst_bytes;
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};
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/*
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Used for every IP when returning data
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*/
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struct ipt_acc_handle_ip {
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uint32_t ip;
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uint32_t src_packets;
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uint32_t src_bytes;
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uint32_t dst_packets;
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uint32_t dst_bytes;
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};
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/*
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The IPs are organized as an array so that direct slot
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calculations are possible.
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Only 8 bit networks are preallocated, 16/24 bit networks
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allocate their slots when needed -> very efficent.
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*/
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struct ipt_acc_mask_24 {
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struct ipt_acc_ip ip[256];
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};
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struct ipt_acc_mask_16 {
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struct ipt_acc_mask_24 *mask_24[256];
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};
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struct ipt_acc_mask_8 {
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struct ipt_acc_mask_16 *mask_16[256];
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};
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#endif /*_IPT_ACCOUNT_H*/
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