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/*
* Copyright (c) 2001 - 2003
* NetGroup, Politecnico di Torino (Italy)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Politecnico di Torino nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef __tme_include_
#define __tme_include_
#ifdef WIN_NT_DRIVER
#include "ndis.h"
#else
#include <windows.h>
#endif /*WIN_NT_DRIVER*/
#include "memory_t.h"
#include "time_calls.h"
/* error codes */
#define TME_ERROR 0
#define TME_SUCCESS 1
#define TME_TRUE 2
#define TME_FALSE 3
/* some constants */
#define DEFAULT_MEM_EX_SIZE 65536
#define MAX_TME_DATA_BLOCKS 4
#define TME_NONE_ACTIVE 0xffffffff
#define DELTA_READ 2 /* secs */
#define TME_LUT_ENTRIES 0x00000000
#define TME_MAX_FILL_STATE 0x00000001 /*potrebbe servire per un thread a passive level!?!?! */
#define TME_REHASHING_VALUE 0x00000002
#define TME_KEY_LEN 0x00000003
#define TME_SHARED_MEMORY_BLOCKS 0x00000004
#define TME_FILLED_ENTRIES 0x00000005
#define TME_BLOCK_SIZE 0x00000006
#define TME_EXTRA_SEGMENT_SIZE 0x00000007
#define TME_LOOKUP_CODE 0x00000008
#define TME_OUT_LUT_EXEC 0x00000009
#define TME_FILLED_BLOCKS 0x0000000a
#define TME_DEFAULT_EXEC 0x0000000b
#define TME_LUT_BASE_ADDRESS 0x0000000c
#define TME_SHARED_MEMORY_BASE_ADDRESS 0x0000000d
#define TME_EXTRA_SEGMENT_BASE_ADDRESS 0x0000000e
#define TME_LAST_FOUND 0x0000000f /* contains the offset of the last found entry */
#define TME_LAST_FOUND_BLOCK 0x00000010
/* TME default values */
#define TME_LUT_ENTRIES_DEFAULT 32007
#define TME_REHASHING_VALUE_DEFAULT 1
#define TME_SHARED_MEMORY_BLOCKS_DEFAULT 16000
#define TME_BLOCK_SIZE_DEFAULT 64
#define TME_EXTRA_SEGMENT_SIZE_DEFAULT 0
#define TME_LOOKUP_CODE_DEFAULT 0
#define TME_OUT_LUT_EXEC_DEFAULT 0
#define TME_DEFAULT_EXEC_DEFAULT 0
#define TME_MAX_FILL_STATE_DEFAULT 15000
#define IS_VALIDATED(src,index) (src&(1<<index))
#define VALIDATE(src,index) src|=(1<<index);
#define FORCE_NO_DELETION(timestamp) (struct timeval*)(timestamp)->tv_sec=0x7fffffff;
/* TME callback prototypes */
typedef uint32 (*lut_fcn)(uint8 *key, struct __TME_DATA *data,MEM_TYPE *mem_ex, struct time_conv *time_ref );
typedef uint32 (*exec_fcn)(uint8 *block, uint32 pkt_size, struct __TME_DATA *data, MEM_TYPE *mem_ex, uint8 *mem_data);
/* DO NOT MODIFY THIS STRUCTURE!!!! GV */
typedef struct __RECORD
{
uint32 block;
uint32 exec_fcn;
}
RECORD, *PRECORD;
/* TME data registers */
struct __TME_DATA
{
uint32 lut_entries;
uint32 max_fill_state;
uint32 rehashing_value;
uint32 key_len;
uint32 shared_memory_blocks;
uint32 filled_entries;
uint32 block_size;
uint32 extra_segment_size;
uint32 filled_blocks;
lut_fcn lookup_code;
uint32 default_exec;
uint32 out_lut_exec;
uint8 *lut_base_address;
uint8 *shared_memory_base_address;
uint8 *extra_segment_base_address;
struct timeval last_read;
uint32 enable_deletion;
uint8 *last_found;
};
typedef struct __TME_DATA TME_DATA,*PTME_DATA;
/* TME core */
typedef struct __TME_CORE
{
uint32 working;
uint32 active;
uint32 validated_blocks;
TME_DATA block_data[MAX_TME_DATA_BLOCKS];
uint32 active_read;
} TME_CORE, *PTME_CORE;
static __inline int32 IS_DELETABLE(void *timestamp, TME_DATA *data)
{
struct timeval *ts=(struct timeval*)timestamp;
if (data->enable_deletion==FALSE)
return FALSE;
if (data->filled_entries<data->max_fill_state)
return FALSE;
if ((ts->tv_sec+DELTA_READ)<data->last_read.tv_sec)
return TRUE;
return FALSE;
}
/* functions to manage TME */
uint32 init_tme_block(TME_CORE *tme, uint32 block);
uint32 validate_tme_block(MEM_TYPE *mem_ex, TME_CORE *tme, uint32 block, uint32 mem_ex_offset);
uint32 lookup_frontend(MEM_TYPE *mem_ex, TME_CORE *tme,uint32 mem_ex_offset, struct time_conv *time_ref);
uint32 execute_frontend(MEM_TYPE *mem_ex, TME_CORE *tme, uint32 pkt_size,uint32 offset);
uint32 set_active_tme_block(TME_CORE *tme, uint32 block);
uint32 init_extended_memory(uint32 size, MEM_TYPE *mem_ex);
uint32 reset_tme(TME_CORE *tme);
uint32 get_tme_block_register(TME_DATA *data,MEM_TYPE *mem_ex,uint32 rgstr,uint32 *rval);
uint32 set_tme_block_register(TME_DATA *data,MEM_TYPE *mem_ex,uint32 rgstr,uint32 value, int32 init);
uint32 set_active_read_tme_block(TME_CORE *tme, uint32 block);
uint32 set_autodeletion(TME_DATA *data, uint32 value);
/* function mappers */
lut_fcn lut_fcn_mapper(uint32 index);
exec_fcn exec_fcn_mapper(uint32 index);
#endif
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