[ipt_ACCOUNT] / linux / include / linux / netfilter_ipv4 / ipt_ACCOUNT.h

#ifndef _IPT_ACCOUNT_H
#define _IPT_ACCOUNT_H

#define ACCOUNT_MAX_TABLES 32
#define ACCOUNT_TABLE_NAME_LEN 32
#define ACCOUNT_MAX_HANDLES 10

/* Structure for the userspace part of ipt_ACCOUNT */
struct ipt_account_info {
	u_int32_t net_ip;
	u_int32_t net_mask;
	char table_name[ACCOUNT_TABLE_NAME_LEN];
	int32_t table_nr;
};

/* Internal table structure, generated by check_entry() */
struct ipt_account_table
{
    char name[ACCOUNT_TABLE_NAME_LEN];        /* name of the table */
    unsigned int ip;                          /* base IP of network */
    unsigned int netmask;                     /* netmask of the network */
    unsigned char depth;                      /* size of network: 0: 8 bit, 1: 16bit, 2: 24 bit */
    unsigned int refcount;                    /* refcount of this table. if zero, destroy it */
    unsigned int itemcount;                   /* number of IPs in this table */
    void *data;                               /* pointer to the actual data, depending on netmask */
};

/* Internal handle structure */
struct ipt_account_handle
{
    unsigned int ip;                          /* base IP of network. Used for caculating the final IP during get_data() */
    unsigned char depth;                      /* size of network. See above for details */
    unsigned int 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_account_handle_sockopt
{
    unsigned int handle_nr;                   /* Used for HANDLE_FREE */
    char name[ACCOUNT_TABLE_NAME_LEN];        /* Used for HANDLE_PREPARE_READ/READ_FLUSH */
    unsigned int itemcount;                   /* Used for HANDLE_PREPARE_READ/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_account_ip
{
    unsigned int src_packets;
    unsigned int src_bytes;
    unsigned int dst_packets;
    unsigned int dst_bytes;
};

/*
    Used for every IP when returning data
*/
struct ipt_account_handle_ip
{
    unsigned int ip;
    unsigned int src_packets;
    unsigned int src_bytes;
    unsigned int dst_packets;
    unsigned int 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_account_mask_24
{
    struct ipt_account_ip ip[256];    
};

struct ipt_account_mask_16
{
    struct ipt_account_mask_24 *mask_24[256];
};

struct ipt_account_mask_8
{
    struct ipt_account_mask_16 *mask_16[256];
};

#endif /*_IPT_ACCOUNT_H*/
Commit	Line	Data
	1	#ifndef _IPT_ACCOUNT_H
	2	#define _IPT_ACCOUNT_H
	3
	4	#define ACCOUNT_MAX_TABLES 32
	5	#define ACCOUNT_TABLE_NAME_LEN 32
	6	#define ACCOUNT_MAX_HANDLES 10
	7
	8	/* Structure for the userspace part of ipt_ACCOUNT */
	9	struct ipt_account_info {
	10	u_int32_t net_ip;
	11	u_int32_t net_mask;
	12	char table_name[ACCOUNT_TABLE_NAME_LEN];
	13	int32_t table_nr;
	14	};
	15
	16	/* Internal table structure, generated by check_entry() */
	17	struct ipt_account_table
	18	{
	19	char name[ACCOUNT_TABLE_NAME_LEN]; /* name of the table */
	20	unsigned int ip; /* base IP of network */
	21	unsigned int netmask; /* netmask of the network */
	22	unsigned char depth; /* size of network: 0: 8 bit, 1: 16bit, 2: 24 bit */
	23	unsigned int refcount; /* refcount of this table. if zero, destroy it */
	24	unsigned int itemcount; /* number of IPs in this table */
	25	void data; / pointer to the actual data, depending on netmask */
	26	};
	27
	28	/* Internal handle structure */
	29	struct ipt_account_handle
	30	{
	31	unsigned int ip; /* base IP of network. Used for caculating the final IP during get_data() */
	32	unsigned char depth; /* size of network. See above for details */
	33	unsigned int itemcount; /* number of IPs in this table */
	34	void data; / pointer to the actual data, depending on size */
	35	};
	36
	37	/* Handle structure for communication with the userspace library */
	38	struct ipt_account_handle_sockopt
	39	{
	40	unsigned int handle_nr; /* Used for HANDLE_FREE */
	41	char name[ACCOUNT_TABLE_NAME_LEN]; /* Used for HANDLE_PREPARE_READ/READ_FLUSH */
	42	unsigned int itemcount; /* Used for HANDLE_PREPARE_READ/READ_FLUSH */
	43	};
	44
	45	/* Used for every IP entry */
	46	/* Size is 16 bytes so that 256 (class C network) * 16 fits in one kernel (zero) page */
	47	struct ipt_account_ip
	48	{
	49	unsigned int src_packets;
	50	unsigned int src_bytes;
	51	unsigned int dst_packets;
	52	unsigned int dst_bytes;
	53	};
	54
	55	/*
	56	Used for every IP when returning data
	57	*/
	58	struct ipt_account_handle_ip
	59	{
	60	unsigned int ip;
	61	unsigned int src_packets;
	62	unsigned int src_bytes;
	63	unsigned int dst_packets;
	64	unsigned int dst_bytes;
	65	};
	66
	67	/*
	68	The IPs are organized as an array so that direct slot
	69	calculations are possible.
	70	Only 8 bit networks are preallocated, 16/24 bit networks
	71	allocate their slots when needed -> very efficent.
	72	*/
	73	struct ipt_account_mask_24
	74	{
	75	struct ipt_account_ip ip[256];
	76	};
	77
	78	struct ipt_account_mask_16
	79	{
	80	struct ipt_account_mask_24 *mask_24[256];
	81	};
	82
	83	struct ipt_account_mask_8
	84	{
	85	struct ipt_account_mask_16 *mask_16[256];
	86	};
	87
	88	#endif /_IPT_ACCOUNT_H/