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ACCOUNT: move xt_ACCOUNT into its own subdirectory

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Will be adding related userspace programs shortly, and an extra
directory for the same reason it is for ipset/.
This commit is contained in:
Jan Engelhardt
2009-09-24 00:44:39 +02:00
parent 1a5b9f0e02
commit 5cb36ed213
9 changed files with 15 additions and 3 deletions
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118
extensions/ACCOUNT/xt_ACCOUNT.h Normal file
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/***************************************************************************
* Copyright (C) 2004-2006 by Intra2net AG *
* opensource@intra2net.com *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License *
* version 2 as published by the Free Software Foundation; *
* *
***************************************************************************/
#ifndef _IPT_ACCOUNT_H
#define _IPT_ACCOUNT_H
/*
* Socket option interface shared between kernel (xt_ACCOUNT) and userspace
* library (libxt_ACCOUNT_cl). Hopefully we are unique at least within our
* kernel & xtables-addons space.
*/
#define SO_ACCOUNT_BASE_CTL 90
#define IPT_SO_SET_ACCOUNT_HANDLE_FREE (SO_ACCOUNT_BASE_CTL + 1)
#define IPT_SO_SET_ACCOUNT_HANDLE_FREE_ALL (SO_ACCOUNT_BASE_CTL + 2)
#define IPT_SO_SET_ACCOUNT_MAX IPT_SO_SET_ACCOUNT_HANDLE_FREE_ALL
#define IPT_SO_GET_ACCOUNT_PREPARE_READ (SO_ACCOUNT_BASE_CTL + 4)
#define IPT_SO_GET_ACCOUNT_PREPARE_READ_FLUSH (SO_ACCOUNT_BASE_CTL + 5)
#define IPT_SO_GET_ACCOUNT_GET_DATA (SO_ACCOUNT_BASE_CTL + 6)
#define IPT_SO_GET_ACCOUNT_GET_HANDLE_USAGE (SO_ACCOUNT_BASE_CTL + 7)
#define IPT_SO_GET_ACCOUNT_GET_TABLE_NAMES (SO_ACCOUNT_BASE_CTL + 8)
#define IPT_SO_GET_ACCOUNT_MAX IPT_SO_GET_ACCOUNT_GET_TABLE_NAMES
#define ACCOUNT_MAX_TABLES 128
#define ACCOUNT_TABLE_NAME_LEN 32
#define ACCOUNT_MAX_HANDLES 10
/* Structure for the userspace part of ipt_ACCOUNT */
struct ipt_acc_info {
uint32_t net_ip;
uint32_t net_mask;
char table_name[ACCOUNT_TABLE_NAME_LEN];
int32_t table_nr;
};
/* Internal table structure, generated by check_entry() */
struct ipt_acc_table {
char name[ACCOUNT_TABLE_NAME_LEN]; /* name of the table */
uint32_t ip; /* base IP of network */
uint32_t netmask; /* netmask of the network */
unsigned char depth; /* size of network:
0: 8 bit, 1: 16bit, 2: 24 bit */
uint32_t refcount; /* refcount of this table.
if zero, destroy it */
uint32_t itemcount; /* number of IPs in this table */
void *data; /* pointer to the actual data,
depending on netmask */
};
/* Internal handle structure */
struct ipt_acc_handle {
uint32_t ip; /* base IP of network. Used for
caculating the final IP during
get_data() */
unsigned char depth; /* size of network. See above for
details */
uint32_t itemcount; /* number of IPs in this table */
void *data; /* pointer to the actual data,
depending on size */
};
/* Handle structure for communication with the userspace library */
struct ipt_acc_handle_sockopt {
uint32_t handle_nr; /* Used for HANDLE_FREE */
char name[ACCOUNT_TABLE_NAME_LEN]; /* Used for HANDLE_PREPARE_READ/
HANDLE_READ_FLUSH */
uint32_t itemcount; /* Used for HANDLE_PREPARE_READ/
HANDLE_READ_FLUSH */
};
/* Used for every IP entry
Size is 16 bytes so that 256 (class C network) * 16
fits in one kernel (zero) page */
struct ipt_acc_ip {
uint32_t src_packets;
uint32_t src_bytes;
uint32_t dst_packets;
uint32_t dst_bytes;
};
/*
Used for every IP when returning data
*/
struct ipt_acc_handle_ip {
uint32_t ip;
uint32_t src_packets;
uint32_t src_bytes;
uint32_t dst_packets;
uint32_t dst_bytes;
};
/*
The IPs are organized as an array so that direct slot
calculations are possible.
Only 8 bit networks are preallocated, 16/24 bit networks
allocate their slots when needed -> very efficent.
*/
struct ipt_acc_mask_24 {
struct ipt_acc_ip ip[256];
};
struct ipt_acc_mask_16 {
struct ipt_acc_mask_24 *mask_24[256];
};
struct ipt_acc_mask_8 {
struct ipt_acc_mask_16 *mask_16[256];
};
#endif /* _IPT_ACCOUNT_H */