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* Copyright (C) 2007 Mindspeed Technologies, Inc.
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#ifndef __CONNTRACK_H__
#define __CONNTRACK_H__
#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
#include "cmm.h"
#include "jhash.h"
#include "list.h"
#include "neighbor_resolution.h"
#include "route_cache.h"
#include <libnetfilter_conntrack/libnetfilter_conntrack.h>
* Structures
#define MAX_CT_ID 8
struct ctTable
struct list_head list;
struct list_head list_by_rep;
struct list_head list_by_orig_route;
struct list_head list_by_rep_route;
struct list_head list_by_orig_tunnel_route;
struct list_head list_by_rep_tunnel_route;
struct nf_conntrack * ct;
struct ct_route orig;
struct FlowEntry *fEntryOrig;
struct ct_route rep;
struct FlowEntry *fEntryRep;
struct ct_route orig_tunnel;
struct ct_route rep_tunnel;
int timeout;
time_t tlast;
int family;
int dir;
int fpp_dir;
int flags;
int dir_filter;
u_int32_t ids[MAX_CT_ID];
int n_id;
struct conntrack_stats
int current;
unsigned long long created;
unsigned long long removed;
unsigned long long destroyed;
* Defines
#define CONNTRACK_HASH_TABLE_SIZE 16384 /* must be power of 2 */
#define CONNTRACK_MAX 32768 /* hard limit on the number of conntracks allowed in cmm,
used to avoid consuming too much memory. Should be higher
than the maximum kernel conntracks configured through
"/proc/sys/net/nf_conntrack_max" */
#define TCP_BE_LIBERAL_PATH "/proc/sys/net/netfilter/nf_conntrack_tcp_be_liberal"
#define ORIGINATOR (1 << 0)
#define REPLIER (1 << 1)
extern struct list_head ct_table[CONNTRACK_HASH_TABLE_SIZE];
extern struct list_head ct_table_by_rep[CONNTRACK_HASH_TABLE_SIZE];
extern struct list_head ct_table_by_orig_route[2 * ROUTE_HASH_TABLE_SIZE];
extern struct list_head ct_table_by_rep_route[2 * ROUTE_HASH_TABLE_SIZE];
extern struct list_head ct_table_by_orig_tunnel_route[2 * ROUTE_HASH_TABLE_SIZE];
extern struct list_head ct_table_by_rep_tunnel_route[2 * ROUTE_HASH_TABLE_SIZE];
extern pthread_mutex_t ctMutex;
extern struct conntrack_stats ct_stats;
struct cmm_ct;
int cmmCtInit(struct cmm_ct *ctx);
void cmmCtExit(struct cmm_ct *ctx);
int __cmmRouteRegister(struct ct_route *rt, struct flow *flow, int is_floating_tunnel, const char *dir);
int ____cmmCtRegister(FCI_CLIENT *fci_handle, struct ctTable *ctEntry);
void __cmmCtUpdateWithRoute(FCI_CLIENT *fci_handle, struct RtEntry *route);
int cmmCtNetlinkRemove(struct nfct_handle * handler, struct nf_conntrack *ct);
int cmmCtHandle(FCI_CLIENT *fci_handle, int function_code, u_int8_t *cmd_buf, u_int16_t cmd_len, u_int16_t *res_buf, u_int16_t *res_len);
int cmmCtShow(struct cli_def * cli, char *command, char *argv[], int argc);
int cmmFlowLocalShow(struct cli_def * cli, char *command, char *argv[], int argc);
struct ctTable *__cmmCtFind(struct nf_conntrack *ctTemp);
void __cmmNeighDeregister(FCI_CLIENT *fci_handle, struct NeighborEntry *neigh, const char *dir);
void __cmmRouteDeregister(FCI_CLIENT *fci_handle, struct ct_route *rt, const char *dir);
void ____cmmRouteDeregister(struct RtEntry *route, const char *dir);
void __cmmFPPRouteDeregister(FCI_CLIENT *fci_handle, struct fpp_rt *fpp_route, const char *dir);
void __cmmCheckFPPRouteIdUpdate(struct ct_route *rt, int *flags);
void __cmmCtRemove(struct ctTable *ctEntry);
void ____cmmCtDeregister(FCI_CLIENT *fci_handle, FCI_CLIENT *fci_key_handle, struct ctTable *ctEntry);
struct ctTable *__cmmCtFindFromFlow(int family, unsigned int *saddr, unsigned int *daddr, unsigned short sport, unsigned short dport, unsigned char proto, char *orig);
/*Hash calculation*/
static __inline u_int32_t HASH_CT(int family, const u_int32_t *Saddr, const u_int32_t *Daddr, u_int16_t Sport, u_int16_t Dport, u_int16_t Proto)
unsigned int a, b;
if (family == AF_INET)
a = jhash((void *)Saddr, 4, (Proto << 16) | Proto);
b = jhash((void *)Daddr, 4, (Sport << 16) | Dport);
a = jhash((void *)Saddr, 16, (Proto << 16) | Proto);
b = jhash((void *)Daddr, 16, (Sport << 16) | Dport);
return jhash_2words(a, b, 0x48375934) % CONNTRACK_HASH_TABLE_SIZE;
#ifdef COMCERTO_2000
#define DPI_ENABLE_CMD 1
int cmmDPIFlagSetProcess(char ** keywords, int tabStart, daemon_handle_t daemon_handle);
int cmmDPIEnableShow(struct cli_def * cli, char *command, char *argv[], int argc);
int cmmDPIFlagProcessClientCmd(u_int8_t *cmd_buf, u_int16_t *res_buf, u_int16_t *res_len);
#endif /*C2000_DPI*/
int cmmAsymFFSetProcess(char ** keywords, int tabStart, daemon_handle_t daemon_handle);
int cmmAsymFFEnableShow(struct cli_def * cli, char *command, char *argv[], int argc);
int cmmAsymFFProcessClientCmd(u_int8_t *cmd_buf, u_int16_t *res_buf, u_int16_t *res_len);