X-Git-Url: http://developer.intra2net.com/git/?p=ipt_ACCOUNT;a=blobdiff_plain;f=linux%2Finclude%2Flinux%2Fnetfilter_ipv4%2Fipt_ACCOUNT.h;h=5feb533f0f88e609bc197d9f246081631a05e4ec;hp=a9160cab7bd2b7d63d4fdd0cdbb1ebca5e6a748b;hb=2ea7a43c53135e9a57555112a4e49e3617c8c419;hpb=35a8230b175ed13efed096c5b646cffba816ee98

diff --git a/linux/include/linux/netfilter_ipv4/ipt_ACCOUNT.h b/linux/include/linux/netfilter_ipv4/ipt_ACCOUNT.h
index a9160ca..5feb533 100644
--- a/linux/include/linux/netfilter_ipv4/ipt_ACCOUNT.h
+++ b/linux/include/linux/netfilter_ipv4/ipt_ACCOUNT.h
@@ -1,13 +1,90 @@
+/***************************************************************************
+ *   Copyright (C) 2004 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
 
+#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;
+    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*/