Plugins: Clean up the plugin directory so that each plugin has its own

directory and GNU autotools setup.

Change-Id: I6c59d1297389c9413db0c0b9bdf3b759080bf1b8
Signed-off-by: Ole Troan <ot@cisco.com>

1 files changed, 701 insertions, 0 deletions

diff --git a/plugins/vcgn-plugin/vcgn/cnat_db.h b/plugins/vcgn-plugin/vcgn/cnat_db.h
new file mode 100644
index 00000000000..3596e2384e6
--- /dev/null
+++ b/plugins/vcgn-plugin/vcgn/cnat_db.h
@@ -0,0 +1,701 @@
+/* 
+ *------------------------------------------------------------------
+ * cnat_db.h - translation database definitions
+ *
+ * Copyright (c) 2007-2013 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *------------------------------------------------------------------
+ */
+
+#ifndef __CNAT_DB_H__
+#define __CNAT_DB_H__
+
+#include "cnat_cli.h"
+#include "cnat_ports.h"
+#include "index_list.h"
+
+#define VRF_NAME_LEN_STORED     12
+#define MAX_VRFID               400
+typedef struct _cnat_svi_params_entry {
+    u16 svi_type;
+    u16 pad;
+
+    u32 vrf_id;
+    u16 if_num;
+
+    u32 ipv6_addr[4];
+    u32 ipv4_addr;
+    
+    u8  direction;
+    u32 tbl_id; /* vrf */
+    u32 vrf_override_id; /* tbl_id for override vrf */
+    u8  vrf_override_flag;
+    u8  partition_id;
+} cnat_svi_params_entry;
+
+typedef struct _cnat_ingress_vrfid_name_entry {
+    u32 vrf_id;
+    u16 ref_count;  /*no# of serviceApps under a single vrf*/
+    u8  vrf_name[VRF_NAME_LEN_STORED];
+    u16 pad1;
+} cnat_ingress_vrfid_name_entry;
+#define HASH_ENHANCE 4
+
+#define CNAT_DB_SIZE	(PLATFORM_MAX_NAT_ENTRIES / PLATFORM_CNAT_INSTS)
+#define CNAT_MAIN_HASH_SIZE (HASH_ENHANCE * PLATFORM_CNAT_MAIN_PRELIM_HASH_SIZE)
+#define CNAT_MAIN_HASH_MASK (CNAT_MAIN_HASH_SIZE-1)
+
+#define CNAT_USER_DB_SIZE (PLATFORM_MAX_USER_ENTRIES / PLATFORM_CNAT_INSTS)
+#define CNAT_USER_HASH_SIZE (HASH_ENHANCE * PLATFORM_CNAT_USER_PRELIM_HASH_SIZE)
+#define CNAT_USER_HASH_MASK (CNAT_USER_HASH_SIZE-1)
+
+#define CNAT_SESSION_DB_SIZE  (PLATFORM_MAX_NAT_ENTRIES / PLATFORM_CNAT_INSTS)
+#define CNAT_SESSION_HASH_SIZE (HASH_ENHANCE * PLATFORM_CNAT_MAIN_PRELIM_HASH_SIZE)
+#define CNAT_SESSION_HASH_MASK (CNAT_SESSION_HASH_SIZE-1)
+
+
+#define CNAT_MAX_SESSIONS_PER_BIB  0xFFFF
+
+#define NUM_BITS_IN_UWORD   (8*sizeof(uword))
+
+/* No. of per ip/port config will be limited to 1024 */
+#define CNAT_TIMEOUT_HASH_SIZE 1024
+#define CNAT_TIMEOUT_HASH_MASK (CNAT_TIMEOUT_HASH_SIZE - 1)
+#define CNAT_TIMEOUT_FULL_MASK 0xFFFFFFFFFFFFFFFF
+#define CNAT_TIMEOUT_IPPROT_MASK PLATFORM_CNAT_TIMEOUT_IPPROT_MASK
+#define CNAT_TIMEOUT_PORTPROT_MASK PLATFORM_CNAT_TIMEOUT_PORTPROT_MASK
+
+#define TRUE    1
+#define FALSE   0
+
+/*
+ * The key structure. All fields are in NETWORK byte order! 
+ */
+typedef struct {
+    u32 ipv4;
+    u16 port;
+    u16 vrf;  //bit0-12:vrf, bit13:unused, bit14-15:protocol
+} cnat_db_key_t;
+
+/* bit14-15:protocol in cnat_db_key_t */
+#define CNAT_INVALID_PROTO     0x0000
+#define CNAT_PPTP     0x0000 
+#define CNAT_UDP      0x4000
+#define CNAT_TCP      0x8000
+#define CNAT_ICMP     0xc000
+#define CNAT_VRF_MASK 0x3fff
+#define CNAT_PRO_MASK 0xc000
+#define CNAT_PRO_SHIFT 14
+
+/*
+ * Maximum number of VRF entries supported
+ */
+#define CNAT_MAX_VRFMAP_ENTRIES  (CNAT_VRF_MASK + 1)
+/*
+ * for hashing purposes, fetch the key in one instr.
+ */
+typedef union {
+    cnat_db_key_t k;
+    u64 key64;
+} cnat_key_t;
+
+typedef struct {
+    cnat_key_t k; 
+    u32 bucket; 
+} cnat_db_key_bucket_t;
+
+typedef struct {
+    u32 ipv6[4];
+    cnat_key_t ipv4_key;
+} dslite_key_t;
+
+typedef struct {
+/*
+    cnat_db_key_bucket_t ck;
+    u32 ipv6[4];
+*/
+    dslite_key_t dk;
+    u32 bucket;
+} dslite_db_key_bucket_t;
+
+
+/* Per port/ip timeout related strucutres */
+extern index_slist_t *cnat_timeout_hash;
+
+typedef struct {
+    cnat_key_t timeout_key;
+    u16        timeout_value;
+} cnat_timeout_t;
+
+typedef struct {
+    cnat_timeout_t t_key; 
+    index_slist_t t_hash;
+} cnat_timeout_db_entry_t;
+
+extern cnat_timeout_db_entry_t *cnat_timeout_db;
+
+/*
+ * Main translation database entries. Currently 0x5A = 90 bytes in length.
+ * Given 20,000,000 entries, it saves nearly 1gb of SDRAM to pack the entries
+ * and pay the extra prefetch. So, that's what we do.
+ */
+
+typedef struct {
+    /* 0x00 */
+    index_slist_t out2in_hash;  /* hash-and-chain, x2 */
+    index_slist_t in2out_hash; 
+
+    /* 0x08 */
+    u16 flags;                  /* Always need flags... */
+#define CNAT_DB_FLAG_PORT_PAIR              (1<<0)
+#define CNAT_DB_FLAG_TCP_ACTIVE             (1<<1)
+#define CNAT_DB_FLAG_ENTRY_FREE             (1<<2)
+#define CNAT_DB_FLAG_UDP_ACTIVE             (1<<3)
+#define CNAT_DB_FLAG_STATIC_PORT            (1<<4)
+/* This alg entry is set for FTP data connection */
+#define CNAT_DB_FLAG_ALG_ENTRY              (1<<5)
+
+/* Will be set for TCP connection with destination port - 1723
+ * note - here CNAT_DB_FLAG_TCP_ACTIVE is also set */
+#define CNAT_DB_FLAG_PPTP_TUNNEL_INIT       (1<<6)
+#define CNAT_DB_FLAG_PPTP_TUNNEL_ACTIVE     (1<<7)
+
+/* for PPTP GRE  packtes */
+#define CNAT_DB_FLAG_PPTP_GRE_ENTRY         (1<<8)
+
+/* for PCP support */
+#define CNAT_DB_FLAG_PCPI                   (1<<9)
+#define CNAT_DB_FLAG_PCPE                   (1<<10)
+#define CNAT_PCP_FLAG  (CNAT_DB_FLAG_PCPI | CNAT_DB_FLAG_PCPE)
+
+#define CNAT_TAC_SEQ_MISMATCH               (1<<11)
+/* This alg entry is set for ftp control connection */
+#define CNAT_DB_FLAG_ALG_CTRL_FLOW          (1<<12)
+
+/* This is for marking the state where connection is closing */
+#define CNAT_DB_FLAG_TCP_CLOSING            (1<<13)
+
+#define CNAT_DB_DSLITE_FLAG                 (1<<14)
+#define CNAT_DB_NAT64_FLAG                  (1<<15)
+
+    /* 0x0A */
+    u16 vrfmap_index;           /* index of vrfmap */
+
+    /* 0x0C */
+    u32 user_index;             /* index of user that owns this entry */
+
+    /* 0x10 */
+    cnat_key_t out2in_key;      /* network-to-user, outside-to-inside key */
+
+    /* 0x18 */
+    cnat_key_t in2out_key;      /* user-to-network, inside-to-outside key */
+
+    /* 0x20 */
+    index_dlist_t user_ports;   /* per-user translation list */
+
+    /* 0x28 */
+    u32 out2in_pkts;            /* pkt counters */
+
+    /* 0x2C */
+    u32 in2out_pkts;
+
+    /* 0x30 */
+    u32 entry_expires;     /* timestamp used to expire translations */
+   
+    /* 0x34 */
+    union {                     /* used by FTP ALG, pkt len delta due to FTP PORT cmd */
+    u16 delta;             
+    i8  alg_dlt[2];             /* two delta values, 0 for previous, 1 for current */
+    u16 il;                     /* Used to indicate if interleaved mode is used
+                                   in case of RTSP ALG */
+    } alg;
+
+    /* 0x36 */
+    u16 timeout;
+
+    /* 0x38 */
+    union {
+      struct seq_pcp_t { 
+        u32 tcp_seq_num;            /* last tcp (FTP) seq # that has pkt len change due to PORT */
+        u32 pcp_lifetime;     /* peer and map life time value sent in reply*/
+      } seq_pcp; 
+
+      /* This is for TCP seq check */
+      struct tcp_seq_chk_t {
+	 u32 seq_no;
+	 u32 ack_no;
+      } tcp_seq_chk;	 
+
+     /* used for pptp alg entries
+         1. only tunnel     : prev and next = 0xFFFFFFFF
+         2. first gre entry : prev = tunnel db, next = next gre db 
+         3. last gre entry  : prev = previous gre/tunnel db, next= 0xFFFFFFFF;  
+
+         *while adding gre entry- updated at the begining of head
+         *while deleting gre entry -  hash look up will be done and prev and next are adjusted
+         * while deleting need not traverse throufgh the list, as done in index_dlist_remelem
+  
+      */
+      index_dlist_t pptp_list; 
+
+    } proto_data; 
+
+    /* 0x40 */ 
+    u32 dst_ipv4;               /* pointer to ipv4 dst list, used in evil mode */
+
+    /* 0x44 */
+    u16 dst_port;
+
+    /* 0x46  */
+    u16 dslite_nat44_inst_id;
+
+    /* 0x48  */
+    u32 session_head_index;
+
+    /* 0x4C */
+    u16 nsessions;
+
+    /* 0x4E */
+    u8 unused;
+
+    /* 0x4F */
+    u8 scale;
+
+    /* 0x50 */
+    u32 diff_window;
+
+    /* Sizeof cnat_main_db_entry_t = 0x54  */
+} cnat_main_db_entry_t;
+
+/* Caution ...
+ * 1. The size of this structure should be same as that of 
+ * nat64_bib_user_entry_t 
+ * 2. Do not alter the position of first four fields
+ */
+typedef struct {
+    /* 0x00 */
+    index_slist_t user_hash;    /* hash 'n chain bucket chain */
+
+    /* 0x04 */
+    u16 ntranslations;          /* translations hold by this user */
+
+    /* 0x06 */
+    u8 icmp_msg_count;          /* use to rate limit imcp send to this user */
+ 
+    /* 0x07 */
+    u8 flags;                  /* To identfiy whether it is NAT64 or NAT44 etc */
+#define CNAT_USER_DB_NAT44_FLAG 0
+#define CNAT_USER_DB_NAT64_FLAG 1
+#define CNAT_USER_DB_DSLITE_FLAG 2
+#define CNAT_USER_DB_PORT_LIMIT_EXCEEDED  0X80
+
+    /* 0x08 */
+    u32 translation_list_head_index;
+
+    /* 0x0C */
+    u32 portmap_index;          /* index of bound port-map */
+
+    /* 0x10 */
+    cnat_key_t key; /* For dslite this should store IPv6 address */
+    u32 ipv6[4]; // B4 ipv6 address
+    /* 0x18 */
+#if 0
+    u32 temp1; 
+    u32 temp2; 
+    u32 temp3; 
+#endif 
+    /* 0x28 same as nat64_user_db */
+#ifndef NO_BULK_LOGGING
+    /* Now adding 8 more bytes for bulk allocation.. This makes it
+     * 0x30 (48). Added the same to nat64_bib_user_entry_t make the
+     * the sizes equal. For nat64 stful, we may support bulk allocation
+     * later.
+     */
+     /* Indicates the currently used bulk port range */
+    i16 bulk_port_range_cache[BULK_RANGE_CACHE_SIZE];
+#endif /* #ifndef NO_BULK_LOGGING */
+} cnat_user_db_entry_t;
+
+/*
+ * cnat_session_entry_t
+ * This structure represents the cnat session table. It maintains the
+ * information about the destination of a given translation (main db)
+ * There would be entry here only if packets are send to more than 1 destn
+ * from the same source.
+ */
+typedef struct {
+
+    /* 0x00 */
+    index_slist_t   cnat_session_hash;
+
+    /* 0x04 */
+    u32 main_db_index; /* would point to v4 src transport address */
+
+    /* 0x08 */
+    cnat_key_t     v4_dest_key;
+
+    /* 0x10 */
+    u16  flags;  /* Same as cnat_main_db_t */
+
+    /* 0x12 */
+    u16 timeout;
+
+    /* 0x14 */
+    u32 entry_expires;
+    /* 0x18 */
+    index_dlist_t    main_list;
+    /* 0x20 = 32 B */
+
+    union {                     /* alg same as cnat_main_db_t */
+    u16 delta;
+    i8  alg_dlt[2];
+    u16 il;
+    } alg;
+
+    /* 0x22 */
+    u16  tcp_flags;
+
+    /* 0x24  */
+    u32 tcp_seq_num;
+
+    /* 0x28  */
+    u32 ack_no;
+
+    /* 0x2C  */
+    u32 window;
+
+    /* 0x30  */
+    u8  scale;
+
+    /* 0x31 */
+    u8 pad;
+
+    /* 0x32 */
+} cnat_session_entry_t;
+
+
+
+/* 
+ * out2in and in2out hash bucket arrays are simply arrays of index_slist_t's
+ */
+
+typedef enum {
+    CNAT_DB_CREATE_DEFAULT=0,   /* honor cnat_main_db_max_ports_per_user */
+    CNAT_DB_CREATE_OVERRIDE,    /* just do it. */
+} cnat_db_create_policy_t;
+
+typedef struct {
+    cnat_key_t in2out_key;
+    cnat_key_t out2in_key;
+    u32 dst_ipv4;           /* evil for mode only */
+    u16 cnat_instance;
+    cnat_portmap_t *portmap;
+    u16 *portmap_inuse;
+    cnat_main_db_entry_t *db;
+    cnat_db_create_policy_t policy;
+    port_pair_t pair_of_ports;
+} cnat_db_create_args_t;
+
+extern cnat_main_db_entry_t *cnat_main_db;
+extern cnat_user_db_entry_t *cnat_user_db;
+extern cnat_session_entry_t *cnat_session_db;
+
+#define S_WAO    0
+#define S_WA     1 /* waiting for address pool */
+#define S_WO     2 /* waiting for outside vrf  */
+#define S_RUN    3 /* got everything */
+#define S_DEL    4 /* just delete */
+
+#define INVALID_UIDX 0xffff /*invalid svi app uidb index */
+#define INVALID_VRFID 0xffffffff /*invalid vrf id */
+
+typedef struct {
+    u16 status;
+    u16 tcp_mss;   //tcp max segment size for this inside vrf */
+    u32 delete_time;
+    u16 i_vrf; //inside SVI uidx
+    u16 o_vrf; //outside SVI uidx
+    u32 i_vrf_id;  //inside vrf id
+    u32 o_vrf_id;  //outside vrf id
+    cnat_portmap_v2_t *portmap_list;
+    u32 nfv9_logging_index;
+    u32 syslog_logging_index;
+    u16 ip_n_to_1;
+#ifndef NO_BULK_LOGGING
+    bulk_alloc_size_t bulk_size;
+#endif /*  #ifndef NO_BULK_LOGGING */
+    u32 pcp_server_addr;
+    u32 pcp_server_port;
+
+    u8  nf_logging_policy;
+    u8  syslog_logging_policy;
+    u8  frag_tout;
+    u32 rseed_ip;
+    u16 port_limit;
+    u8  tcp_seq_check_enable;
+    u8  pad;
+    u32 tcp_seq_user_window;
+    u8  filter_policy;
+    u8  ignore_port;
+} cnat_vrfmap_t;
+
+/*
+ * When creating cnat_vrfmap entry, ensure that any already
+ * configured logging info is taken into account
+ */
+#define CNAT_SET_VRFMAP_NFV9_LOGGING_INDEX(logging_index, i_vrf) \
+do { \
+    cnat_nfv9_logging_info_t *my_nfv9_logging_info = 0; \
+    pool_foreach (my_nfv9_logging_info, cnat_nfv9_logging_info, ({ \
+        if (my_nfv9_logging_info->i_vrf == i_vrf) { \
+	    logging_index = my_nfv9_logging_info - cnat_nfv9_logging_info; \
+	    break; \
+        } \
+    })); \
+while (0)
+
+
+typedef struct {
+    /*
+     * spp_ctx_alloc() call failed
+     */
+    u64 nfv9_logging_context_creation_fail_count;
+    
+    /*
+     * Cannot send the existing logging pkt, so cannot create
+     * any additional packets for logging purposes
+     */
+    u64 nfv9_logging_context_creation_deferred_count;
+
+    /*
+     * Cannot send the existing logging pkt due to cnat_rewrite_output
+     * superframe being full.
+     */
+    u64 nfv9_downstream_constipation_count;
+
+    /*
+     * buffer for spp_ctx_alloc() call failed
+     */
+    u64 nfv9_logging_context_buffer_allocation_fail_count;
+
+} cnat_global_counters_t;
+
+
+extern cnat_global_counters_t cnat_global_counters;
+
+extern u16 *cnat_portmap_indices_by_vrf;
+extern cnat_vrfmap_t *cnat_portmap_by_vrf;
+extern cnat_portmap_t **cnat_portmaps;
+extern u16 **cnat_portmaps_inuse;
+
+extern cnat_vrfmap_t *cnat_map_by_vrf;
+
+/*
+ * Special define to indicate that the VRF map index entry is empty
+ */
+#define VRF_MAP_ENTRY_EMPTY 0xffff
+extern u16 vrf_map_array[CNAT_MAX_VRFMAP_ENTRIES];
+
+extern cnat_svi_params_entry svi_params_array[CNAT_MAX_VRFMAP_ENTRIES];
+extern cnat_ingress_vrfid_name_entry vrfid_name_map[MAX_VRFID];
+
+extern index_slist_t *cnat_out2in_hash;
+extern index_slist_t *cnat_in2out_hash;
+extern index_slist_t *cnat_user_hash;
+extern index_slist_t *cnat_session_hash;
+
+typedef enum {
+    CNAT_DB_IN2OUT = 0,
+    CNAT_DB_OUT2IN,
+} cnat_db_which_t;
+
+typedef enum {
+    CNAT_NO_ICMP_MSG =0,
+    CNAT_ICMP_MSG,
+} cnat_icmp_msg_t;
+
+typedef struct {
+    cnat_errno_t    error;
+    cnat_icmp_msg_t gen_icmp_msg;
+    u32             svi_addr;
+} cnat_gen_icmp_info;
+
+typedef cnat_vrfmap_t nat64_vrfmap_t;
+typedef cnat_portmap_v2_t nat64_portmap_v2_t;
+
+#define CNAT_V4_GET_HASH(key64, hash, mask) \
+    a = key64; \
+    b = c = 0x9e3779b97f4a7c13LL; \
+    /* Jenkins hash, arbitrarily use c as the "answer" */ \
+    hash_mix64(a, b, c); \
+    hash = c & mask;
+
+#define CNAT_V4_GET_SESSION_HASH(main_index, in_addr, port, vrf, hash, mask) \
+    a = main_index ^ in_addr ^ port ^ vrf; \
+    b = c = 0x9e3779b9; \
+    /* Jenkins hash, arbitrarily use c as the "answer" */ \
+    hash_mix32(a, b, c); \
+    hash = c & mask;
+
+#define CNAT_V4_GET_FRAG_HASH(key64, key32, hash, mask) \
+    a = key64; \
+    b = key32; \
+    c = 0x9e3779b97f4a7c13LL; \
+    hash_mix64(a, b, c); \
+    hash = c % mask;
+
+#define CNAT_DB_UPDATE_IN2OUT_TIMER \
+   db->entry_expires = cnat_current_time; \
+   db->in2out_pkts++; 
+
+#define CNAT_DB_TIMEOUT_RST(db) \
+	if(PREDICT_TRUE(db->entry_expires != 0 )) \
+		db->entry_expires = cnat_current_time;
+
+#define DEBUG_I2O_DROP(debug_flag) \
+if (debug_i_flag & debug_flag) { \
+    cnat_db_debug_i2o_drop(&ki); \
+}
+
+
+cnat_main_db_entry_t *cnat_main_db_create (cnat_db_create_args_t *a);
+void cnat_main_db_entry_delete(cnat_main_db_entry_t *ep);
+
+void cnat_delete_main_db_entry(cnat_main_db_entry_t *ep);
+void cnat_delete_main_db_entry_v2(cnat_main_db_entry_t *ep);
+
+
+cnat_main_db_entry_t*
+cnat_get_main_db_entry(cnat_db_key_bucket_t *ki,
+                       port_pair_t port_type,
+                       cnat_errno_t *error,
+                       cnat_user_db_entry_t ** user_db_entry);
+
+cnat_main_db_entry_t*
+cnat_get_main_db_entry_v2(cnat_db_key_bucket_t *ki,
+                       port_pair_t port_pair_type,
+                       port_type_t port_type,
+                       cnat_gen_icmp_info *info,
+                       cnat_key_t *dest_info);
+
+cnat_main_db_entry_t*
+cnat_create_static_main_db_entry_v2(cnat_db_key_bucket_t *ki,
+                                    cnat_db_key_bucket_t *ko,
+				    cnat_vrfmap_t        *my_vrfmap,
+				    cnat_gen_icmp_info   *info);
+
+cnat_main_db_entry_t*
+cnat_create_main_db_entry_and_hash(cnat_db_key_bucket_t *ki,
+                                   cnat_db_key_bucket_t *ko,
+                                   cnat_user_db_entry_t *udb);
+
+cnat_user_db_entry_t*
+cnat_user_db_create_entry(cnat_db_key_bucket_t *uki,
+                          u32 portmap_index);
+
+cnat_user_db_entry_t*
+cnat_user_db_lookup_entry(cnat_db_key_bucket_t *uki);
+
+cnat_main_db_entry_t*
+cnat_main_db_lookup_entry(cnat_db_key_bucket_t *ki);
+
+cnat_main_db_entry_t*
+cnat_main_db_lookup_entry_out2in (cnat_db_key_bucket_t *ko);
+
+void cnat_main_db_entry_dump (cnat_main_db_entry_t *db);
+void cnat_db_in2out_hash_delete (cnat_main_db_entry_t *ep, cnat_user_db_entry_t *up);
+void cnat_db_out2in_hash_delete (cnat_main_db_entry_t *ep);
+void cnat_user_db_delete (cnat_user_db_entry_t *up);
+void cnat_db_debug_i2o_drop(cnat_db_key_bucket_t *ki);
+
+/*
+ * Function to dump the Hash Table that maps if_num to uidb_index
+ */
+extern void cnat_if_num_hash_table_dump(void);
+
+#define MAIN_DB_TYPE        0
+#define SESSION_DB_TYPE     1
+u16 query_and_update_db_timeout(void *db, u8 db_type);
+
+u16 cnat_timeout_db_create (cnat_timeout_t t_entry);
+void cnat_timeout_db_delete(cnat_key_t t_key);
+
+cnat_session_entry_t *
+cnat_create_session_db_entry(cnat_key_t *ko,
+    cnat_main_db_entry_t *bdb, u8 log);
+
+void cnat_dest_update_main2session(cnat_main_db_entry_t *mdb,
+      cnat_session_entry_t *sdb);
+
+cnat_session_entry_t *cnat_handle_1to2_session(
+        cnat_main_db_entry_t *mdb,
+        cnat_key_t *dest_info);
+
+void cnat_add_dest_n_log(
+        cnat_main_db_entry_t *mdb,
+        cnat_key_t *dest_info);
+
+cnat_session_entry_t *
+   cnat_session_db_lookup_entry(cnat_key_t *ko,u32 main_db_index);
+
+cnat_session_entry_t *
+   cnat_session_db_edm_lookup_entry(cnat_key_t *ko,
+                                    u32 session_head_index,
+				    u32 main_db_index);
+
+
+typedef struct{
+    u32 sessions;
+    u32 active_translations;
+    u32 num_dynamic_translations;
+    u32 num_static_translations;
+    u64 in2out_drops_port_limit_exceeded;
+    u64 in2out_drops_system_limit_reached;
+    u64 in2out_drops_resource_depletion;
+    u64 no_translation_entry_drops;
+    u32 num_subscribers;
+    u32 dummy;
+    u64 drops_sessiondb_limit_exceeded;
+} nat44_dslite_common_stats_t;
+
+typedef struct {
+    u32 translation_delete_count;
+    u32 translation_create_count;
+    u32 out2in_forwarding_count;
+} nat44_dslite_global_stats_t;
+
+typedef struct {
+    u64 v4_to_v6_tcp_seq_mismatch_drop_count;
+    u64 v4_to_v6_tcp_seq_mismatch_count;
+    u64 v4_to_v6_out2in_session_create_count;
+    u64 v4_to_v6_end_point_filter_drop_count;
+} nat44_counters_stats_t;
+
+#define NAT44_STATS 0
+#define DSLITE_STATS 1
+extern nat44_dslite_common_stats_t nat44_dslite_common_stats[255]; /* 0 is for nat44 */
+extern nat44_dslite_global_stats_t nat44_dslite_global_stats[2]; /* 0 for nat44 and 1 for dslite */
+extern nat44_counters_stats_t     nat44_counters_stats[CNAT_MAX_VRFMAP_ENTRIES];/*For displaying show cgn <cgn-name> inside-vrf <vrf-name> counters */
+
+#define NAT44_COMMON_STATS nat44_dslite_common_stats[NAT44_RESERVED_INST_ID] 
+#define NAT44_GLOBAL_STATS nat44_dslite_global_stats[NAT44_STATS] 
+#define DSLITE_GLOBAL_STATS nat44_dslite_global_stats[DSLITE_STATS] 
+#define SESSION_LOG_ENABLE    1
+#define ALG_ENABLED_DB(db) \
+    ((db->flags & CNAT_PCP_FLAG) || \
+    (db->flags & CNAT_DB_FLAG_ALG_CTRL_FLOW) || \
+    (db->flags & (CNAT_DB_FLAG_PPTP_TUNNEL_INIT | \
+                  CNAT_DB_FLAG_PPTP_TUNNEL_ACTIVE)))
+
+
+#endif /* __CNAT_DB_H__ */