4 #define ACCOUNT_MAX_TABLES 32
5 #define ACCOUNT_TABLE_NAME_LEN 32
6 #define ACCOUNT_MAX_HANDLES 10
8 /* Structure for the userspace part of ipt_ACCOUNT */
9 struct ipt_account_info {
12 char table_name[ACCOUNT_TABLE_NAME_LEN];
16 /* Internal table structure, generated by check_entry() */
17 struct ipt_account_table
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 */
28 /* Internal handle structure */
29 struct ipt_account_handle
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 */
37 /* Handle structure for communication with the userspace library */
38 struct ipt_account_handle_sockopt
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 */
45 /* Used for every IP entry */
46 /* Size is 16 bytes so that 256 (class C network) * 16 fits in one kernel (zero) page */
49 unsigned int src_packets;
50 unsigned int src_bytes;
51 unsigned int dst_packets;
52 unsigned int dst_bytes;
56 Used for every IP when returning data
58 struct ipt_account_handle_ip
61 unsigned int src_packets;
62 unsigned int src_bytes;
63 unsigned int dst_packets;
64 unsigned int dst_bytes;
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.
73 struct ipt_account_mask_24
75 struct ipt_account_ip ip[256];
78 struct ipt_account_mask_16
80 struct ipt_account_mask_24 *mask_24[256];
83 struct ipt_account_mask_8
85 struct ipt_account_mask_16 *mask_16[256];
88 #endif /*_IPT_ACCOUNT_H*/