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, 2256 insertions, 0 deletions

diff --git a/plugins/vcgn-plugin/vcgn/cnat_util.c b/plugins/vcgn-plugin/vcgn/cnat_util.c
new file mode 100644
index 00000000000..c3697b6be2f
--- /dev/null
+++ b/plugins/vcgn-plugin/vcgn/cnat_util.c
@@ -0,0 +1,2256 @@
+/* 
+ *------------------------------------------------------------------
+ * cnat_util.c - cnat helpers 
+ *
+ * Copyright (c) 2009-2014 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.
+ *------------------------------------------------------------------
+ */
+
+#include <vlib/vlib.h>
+#include <vnet/vnet.h>
+#include <vppinfra/vec.h>
+#include <vppinfra/bitmap.h>
+#include <vppinfra/hash.h>
+#include <vppinfra/pool.h>
+#include <vppinfra/clib.h>
+#include <vppinfra/error.h>
+
+#include "tcp_header_definitions.h"
+
+#if 0
+void spp_api_cnat_v4_config_dummy_t_handler
+(spp_api_cnat_v4_config_dummy_t *mp);
+
+void spp_api_cnat_v4_config_dummy_max_t_handler
+(spp_api_cnat_v4_config_dummy_max_t *mp);
+
+void spp_api_cnat_v4_config_icmp_timeout_t_handler
+(spp_api_cnat_v4_config_icmp_timeout_t *mp);
+
+void spp_api_cnat_clear_db_request_t_handler 
+(spp_api_cnat_clear_db_request_t *mp);
+
+void spp_api_cnat_v4_debug_global_t_handler
+(spp_api_cnat_v4_debug_global_t *mp);
+
+void spp_api_cnat_v4_show_outside_entry_req_t_handler
+(spp_api_cnat_v4_show_outside_entry_req_t *mp);
+
+void spp_api_cnat_v4_show_inside_entry_req_t_handler
+(spp_api_cnat_v4_show_inside_entry_req_t *mp);
+
+void spp_api_cnat_show_statistics_summary_req_t_handler
+(spp_api_cnat_show_statistics_summary_req_t *mp);
+
+void cnat_db_create_db_entries_cmd (int argc, unsigned long *argv)
+{
+    int i, j ;
+    int nusers = 3000;
+
+    cnat_db_key_bucket_t key_info;
+    cnat_main_db_entry_t *db;
+    cnat_gen_icmp_info info;
+    cnat_key_t dest_info_dummy;
+
+    memset(&dest_info_dummy, 0, sizeof(cnat_key_t));
+    printf ("Create %d users, 100 translations each...\n", nusers);
+
+    for (i = 0; i < nusers; i++) {
+        for (j = 0; j < 100; j++) {
+
+            key_info.k.k.vrf = CNAT_TCP | (1 & CNAT_VRF_MASK);
+            key_info.k.k.ipv4  = 0x0c000001+i;
+            key_info.k.k.port  = 1024+j;
+
+            db = cnat_get_main_db_entry_v2(&key_info, PORT_SINGLE,
+                PORT_TYPE_DYNAMIC, &info, &dest_info_dummy);
+
+            if (db == 0) {
+                 printf ("OOPS: cnat_main_db_create failed users %d trans %d\n", i, j);
+                 return; /*jli*/
+            }
+          
+            db->entry_expires = cnat_current_time;
+
+        }
+    }
+}
+
+void db_test_clear (int argc, unsigned long *argv)
+{
+    spp_api_cnat_clear_db_request_t mp;
+
+    mp.wildcard = argv[0];
+    mp.protocol = argv[1];
+    mp.port_num = argv[2];
+    mp.inside_vrf = argv[3];
+    mp.ip_addr = argv[4];
+    spp_api_cnat_clear_db_request_t_handler(&mp);
+}
+
+/* test code*/
+void cnat_db_test_show (int argc, unsigned long *argv)
+{
+
+    spp_api_cnat_v4_show_inside_entry_req_t mp1[2000];
+    spp_api_cnat_v4_show_outside_entry_req_t mp2[30000];
+
+    if (argc > 1) {
+        if (argc != 7) {
+	    printf("Usage: db test show dec((which)) dec((vrf)) dec((proto)) dec((ip)) dec((start_port)) dec((end_port)) dec((flags))\n");
+	    return;
+	}
+
+	mp1[0].vrf_id = argv[1];
+	mp1[0].protocol = argv[2];;
+	mp1[0].ipv4_addr =  argv[3];
+	mp1[0].start_port = argv[4];
+	mp1[0].end_port =  argv[5];
+	mp1[0].flags = argv[6];
+	mp1[0].all_entries = 0;
+
+    if (argv[0] == 1) {
+	     spp_api_cnat_v4_show_inside_entry_req_t_handler (&(mp1[0]));
+	} else {
+	     spp_api_cnat_v4_show_outside_entry_req_t_handler (&(mp2[0]));
+	}
+
+	return;
+    } else {
+	printf("inside entries \n");
+	mp1[0].ipv4_addr =  0x016994CA;
+	mp1[0].vrf_id = 1;
+	mp1[0].all_entries = 0;
+	mp1[0].start_port = 32765;
+	mp1[0].end_port =  65535;
+	mp1[0].protocol = 2;
+	mp1[0].flags = 3;
+
+       spp_api_cnat_v4_show_inside_entry_req_t_handler (&(mp1[0]));
+
+	mp2[0].ipv4_addr =  0x640200c1;
+	mp2[0].vrf_id = 0;
+	mp2[0].start_port = 1025;
+	mp2[0].end_port = 62235;
+	mp2[0].protocol = 2;
+	mp2[0].flags = 3;
+
+	spp_api_cnat_v4_show_outside_entry_req_t_handler (&(mp2[0]));
+    }
+
+#if 1
+    {
+    spp_api_cnat_stats_node_mapping_t mp3[20000];
+    spp_api_cnat_stats_counter_mapping_t mp4[20000];
+    spp_api_cnat_stats_counter_values_t mp5[23000];
+
+    mp3[0].rc = 0;
+    spp_api_cnat_stats_node_mapping_t_handler (&mp3);
+    mp4[0].rc = 0;
+    spp_api_cnat_stats_counter_mapping_t_handler (&mp4);
+
+    mp5[0].flag = 1;
+    spp_api_cnat_stats_counter_values_t_handler(&mp5);
+    }
+#endif
+
+#if 0
+    mp1.ipv4_addr = 0x0A010102;
+    mp1.vrf_id = 1;
+    mp1.all_entries = 1;
+    mp1.protocol = 1;
+
+    spp_api_cnat_v4_show_inside_entry_req_t_handler (&mp1);
+
+
+    mp1.ipv4_addr = 0x0A010103;
+    mp1.vrf_id = 1;
+    mp1.all_entries = 1;
+    mp1.protocol = 2;
+
+    spp_api_cnat_v4_show_inside_entry_req_t_handler (&mp1);
+
+    mp6[0].inside_vrf_id = 1; 
+    mp6[0].start_ipv4_address = 0x64020001;
+    mp6[0].end_ipv4_address = 0x64020101;
+    mp6[0].free_addr = 0;
+    mp6[0].flags = CNAT_TRANSLATION_ENTRY_STATIC;
+
+    spp_api_cnat_v4_show_freeUsed_entry_req_t_handler(&mp6);
+  
+#endif
+    printf("returned here");
+
+    return;
+}
+
+
+
+void cnat_db_clear_all_entries (int argc, unsigned long *argv)
+{
+    cnat_main_db_entry_t * db;
+    u32 index;
+
+    pool_header_t * p = vec_header(cnat_main_db, sizeof(pool_header_t) );
+
+    for(index = 0; index < vec_len(cnat_main_db); index++) {
+
+        if ( !clib_bitmap_get(p->free_bitmap, index)) {
+
+            db = cnat_main_db + index;
+            cnat_delete_main_db_entry_v2(db);
+
+        }
+    }
+    
+}
+
+
+void spp_log_cmd (int argc, unsigned long *argv)
+{
+    u16 num_traces;
+    u16 error_code;
+    u16 num_args;
+    u32 arg[7];
+    u8 i;
+
+    num_traces = argv[0];
+
+    for (i = 0; i < num_traces; i++) {
+        error_code = argv[1 + 4*i];
+        num_args = argv[2 + 4*i];
+        arg[0] = argv[3 + 4*i];
+        arg[1] = argv[4 + 4*i];
+
+        spp_printf(error_code, num_args, arg);
+    }
+}
+
+
+void cnat_db_create_random_entries (int argc, unsigned long *argv)
+{
+
+     platform_cnat_db_create_random_entries();
+}
+
+#define MAX_DEPTH 10
+
+void show_user_db_hash_chain_len() {
+
+    u32 max_len, len, n, i, max_idx, index, used;
+    cnat_user_db_entry_t * udb;
+    u32 hash_depth[MAX_DEPTH];
+
+    memset(hash_depth, 0, sizeof(u32)*MAX_DEPTH);
+
+    n = vec_len(cnat_user_hash);
+
+    used = 0;
+    max_len = 0;
+    for(i=0;i<n;i++) {
+
+        index = cnat_user_hash[i].next;
+
+        len = 0;
+        if (index != EMPTY) used++;
+
+        while (index != EMPTY) {
+            len++ ;
+            udb = cnat_user_db + index;
+            index = udb->user_hash.next;
+        }
+
+        if(len < (MAX_DEPTH-1) ) {
+            hash_depth[len]++;
+        } else {
+            hash_depth[MAX_DEPTH-1]++;
+        }
+
+        if (max_len < len) {
+            max_len = len;
+            max_idx = cnat_user_hash[i].next;
+         }
+    }
+
+    printf("Max user db hash length %u, total buckets %u used %u\n",
+           max_len, n, used);
+
+    for( i=1; i<(MAX_DEPTH - 1); i++) {
+        printf("Hash chain len  %02d, entries count %d\n", i, hash_depth[i]);
+    }
+
+    printf("Hash chain len >%02d, entries count %d\n",
+           MAX_DEPTH-1, hash_depth[MAX_DEPTH-1]);
+
+}
+
+void show_main_db_hash_chain_len() {
+
+    u32 max_len, len, n, i, max_idx, index, used;
+    cnat_main_db_entry_t * db;
+    u32 hash_depth[MAX_DEPTH];
+
+    memset(hash_depth, 0, sizeof(u32)*MAX_DEPTH);
+
+    n = vec_len(cnat_in2out_hash);
+
+    used = 0;
+    max_len = 0;
+    for(i=0;i<n;i++) {
+
+        index = cnat_in2out_hash[i].next;
+
+        len = 0;
+        if (index != EMPTY) used++;
+
+        while (index != EMPTY) {
+            len++ ;
+            db = cnat_main_db + index;
+            index = db->in2out_hash.next;
+        }
+
+        if(len < (MAX_DEPTH-1) ) {
+            hash_depth[len]++;
+        } else {
+            hash_depth[MAX_DEPTH-1]++;
+        }
+
+        if (max_len < len) { 
+            max_len = len;  
+            max_idx = cnat_in2out_hash[i].next;
+         }
+    }
+
+    printf("Max main db I2O hash length %u, total buckets %u used %u\n", 
+           max_len, n, used);
+
+    for( i=1; i<(MAX_DEPTH - 1); i++) {
+        printf("Hash chain len  %02d, entries count %d\n", i, hash_depth[i]);
+    }
+
+    printf("Hash chain len >%02d, entries count %d\n",
+           MAX_DEPTH-1, hash_depth[MAX_DEPTH-1]);
+
+
+    memset(hash_depth, 0, sizeof(u32)*MAX_DEPTH);
+
+    n = vec_len(cnat_out2in_hash);
+    used = 0;
+    max_len = 0;
+
+    for(i=0;i<n;i++) {
+
+       index = cnat_out2in_hash[i].next;
+       len = 0;
+
+       if (index != EMPTY) used++;
+
+       while (index != EMPTY) {
+           len++ ;
+           db = cnat_main_db + index;
+           index = db->out2in_hash.next;
+       }
+
+        if(len < (MAX_DEPTH-1) ) {
+            hash_depth[len]++;
+        } else {
+            hash_depth[MAX_DEPTH-1]++;
+        }
+
+        if (max_len < len) {
+            max_len = len;
+            max_idx = cnat_in2out_hash[i].next;
+         }
+    }
+
+    printf("Max main db O2I hash length %u, total buckets %u used %u\n",
+           max_len, n, used);
+
+    for( i=1; i<(MAX_DEPTH - 1); i++) {
+        printf("Hash chain len  %02d, entries count %d\n", i, hash_depth[i]);
+    }
+
+    printf("Hash chain len >%02d, entries count %d\n", 
+           MAX_DEPTH-1, hash_depth[MAX_DEPTH-1]);
+
+
+}
+
+u32 db_free_entry (void * p) {
+
+    pool_header_t * h;
+    u32 free;
+
+    h = pool_header(p);
+
+    free = p == 0 ? 0: vec_len(h->free_indices);
+
+    return free;
+}
+
+void cnat_db_summary (int argc, unsigned long *argv) {
+
+    PLATFORM_DEBUG_PRINT("\n-----------------------------------------");
+    PLATFORM_DEBUG_PRINT("\nSummary DB");
+    PLATFORM_DEBUG_PRINT("\n-----------------------------------------\n");
+    u32 count1, count2, i;
+#ifndef NO_NAT64_DEF
+    extern void nat64_session_db_summary();
+#endif
+    /* main db active entry count*/
+    count1 = vec_len(cnat_main_db);
+    count2 = db_free_entry(cnat_main_db);
+
+    PLATFORM_DEBUG_PRINT("main db entries:  total %u, active %u, free %u\n", count1, count1 - count2, count2);
+
+    /* user db active entry count */
+    count1 = vec_len(cnat_user_db);
+    count2 = db_free_entry(cnat_user_db);
+
+    PLATFORM_DEBUG_PRINT("user db entries:  total %u, active %u, free %u\n", count1, count1 - count2, count2);
+
+
+    /* user db active entry count */
+#ifndef NO_NAT64_DEF
+    nat64_session_db_summary();
+#endif
+
+    /* main db hash i2o o2i usage count */
+    count1  = 0;
+    count2  = 0;
+
+    for (i=0; i< CNAT_MAIN_HASH_SIZE; i++) {
+
+        if(cnat_in2out_hash[i].next != ~0) count1++;
+        if(cnat_out2in_hash[i].next != ~0) count2++;
+
+    }
+
+    PLATFORM_DEBUG_PRINT("main hash in2out: total %6u, used %u (%.2f%%)\n", 
+            CNAT_MAIN_HASH_SIZE, count1,
+            (100.0*count1)/CNAT_MAIN_HASH_SIZE);
+
+    PLATFORM_DEBUG_PRINT("main hash out2in: total %6u, used %u (%.2f%%)\n", 
+            CNAT_MAIN_HASH_SIZE, count2,
+            (100.0 * count1)/CNAT_MAIN_HASH_SIZE);
+
+    /* use db hashing usage count */
+
+    count1  = 0;    
+
+    for (i=0; i< CNAT_USER_HASH_SIZE; i++) {
+        if(cnat_user_hash[i].next != ~0) count1++;
+    }
+
+    PLATFORM_DEBUG_PRINT("user db hash:     total %6u, used %u (%.2f%%)\n", 
+            CNAT_USER_HASH_SIZE, count1,
+            (100.0*count1)/CNAT_USER_HASH_SIZE);
+
+   PLATFORM_DEBUG_PRINT("\nNull pointer exceptions:\n");
+   PLATFORM_DEBUG_PRINT("packet_pool: null enq   : %10u, null deq  : %10u\n",null_enq_pkt, null_deq_pkt);
+   PLATFORM_DEBUG_PRINT("ctx_pool   : null enq   : %10u, null deq  : %10u\n",null_enq_ctx, null_deq_ctx);
+   PLATFORM_DEBUG_PRINT("wqe_pool   : null enq   : %10u, null deq  : %10u\n",null_enq_wqe, null_deq_wqe);
+
+   PLATFORM_DEBUG_PRINT("\nReceived Packet Errors on SPI:\n");
+   PLATFORM_DEBUG_PRINT("rcv_pkt_errs: %10u\n",rcv_pkt_errs);
+
+   PLATFORM_DEBUG_PRINT("\nctx/sf allocation failure errors: \n");
+#ifndef CGN_PERF_SCALE_DEBUG
+   PLATFORM_DEBUG_PRINT("Warning: collection of error counts <with timestamp> is disabled.\n");
+   PLATFORM_DEBUG_PRINT("sf alloc errors: %10u, ctx alloc errors: %10u\n",sf_alloc_errs,ctx_alloc_errs);
+#else
+   for(i=0;i<COUNTER_BUFFER_SIZE;i++)
+       PLATFORM_DEBUG_PRINT("<%2d>Timestamp <sec>: %10u, sf errors: %10u, ctx errors: %10u\n",\
+	       i,err_cnt_arr[i].timestamp,\
+               err_cnt_arr[i].sf_error_counter, \
+               err_cnt_arr[i].ctx_error_counter);
+#endif
+}
+
+void cnat_db_hash_summary (int argc, unsigned long *argv) {
+
+    show_main_db_hash_chain_len();
+
+    show_user_db_hash_chain_len();
+}
+
+/*
+ * cnat_port_alloc
+ * This function is now deprecated...
+ *
+ */
+#ifdef LB_PORT
+int cnat_port_alloc (cnat_portmap_t *cnat_portmap, u16 *portmap_inuse,
+                     int cnat_instance,
+                     port_alloc_t atype, port_pair_t ptype,
+                     int *index, u32 *ipv4_address, u16 *base_port)
+#else
+int cnat_port_alloc (cnat_portmap_t *cnat_portmap, u16 *portmap_inuse,
+                     port_alloc_t atype, port_pair_t ptype,
+                     int *index, u32 *ipv4_address, u16 *base_port)
+#endif
+{
+
+    return (0);
+}
+
+/*
+ * cnat_port_free
+ * This function is now deprecated...
+ *
+ */
+#ifdef LB_PORT
+void cnat_port_free (cnat_portmap_t *cnat_portmap, u16 *portmap_inuse,
+                     int instance, int index, port_pair_t ptype, u16 base_port)
+#else
+void cnat_port_free (cnat_portmap_t *cnat_portmap, u16 *portmap_inuse,
+                     int index, port_pair_t ptype, u16 base_port)
+#endif
+{
+}
+
+void spp_api_cnat_port_allocate_t_handler(spp_api_cnat_port_allocate_t *mp)
+{
+    int i, j, k1, k2;
+    int pm_index;
+    u32 ipv4_address;
+    u16 aport;
+    int rv;
+    char *out1, *out2, *out_f;
+    port_alloc_t pt1, pt2;
+    cnat_portmap_t *pm = 0;
+    u16 *pm_inuse = 0;
+    u32 *firstp =0;
+    u32 nr_ports =0;
+    u32 nodd_ports = 0;
+    u32 neven_ports = 0;
+#ifdef LB_PORT
+    u32 my_instance = 1;
+#endif
+    char out_r[12] = "allocated-r";
+    char out_o[12] = "allocated-o";
+    char out_e[12] = "allocated-e";
+
+
+    /*
+     * this command is run after db create portmap
+     * vrf is hardcode to 1
+     */
+
+    /* Already have a portmap vector for this VRF? */
+    for (i = 0; i < vec_len(cnat_portmap_indices_by_vrf); i++) {
+        if (cnat_portmap_indices_by_vrf[i] == mp->vrf) {
+            pm = cnat_portmaps[i];
+            pm_inuse = cnat_portmaps_inuse[i];
+            goto found_portmaps;
+        }
+    }
+
+    printf("need to run db create portmaps first 0x%d\n",
+            vec_len(cnat_portmap_indices_by_vrf));
+    return;
+
+found_portmaps:
+    nr_ports = mp->nr_ports;
+    nodd_ports = mp->nodd_ports;
+    neven_ports = mp->neven_ports;
+
+    if ((nr_ports + nodd_ports + neven_ports ) > (PORTS_PER_ADDR)) {
+        printf("invalid port# nr_ports %d + odd %d + even %d "
+               "should be less than 200 \n", nr_ports, nodd_ports, neven_ports);
+        return;
+    }
+
+    /*
+     * first port
+     */
+    firstp = nr_ports ? (&nr_ports) : (nodd_ports ? (&nodd_ports) : (&neven_ports));
+    if (!(*firstp)) {
+        printf("invalid port# nr_ports %d  odd %d  even %d ",
+               nr_ports, nodd_ports, neven_ports);
+    }
+    out_f = nr_ports ? out_r : (nodd_ports ? out_o : out_e);
+
+#ifdef LB_PORT
+    rv = cnat_port_alloc (pm, pm_inuse, my_instance,
+                          PORT_ALLOC_ANY, PORT_S_ODD,
+                          &pm_index, &ipv4_address, &aport);
+#else
+    rv = cnat_port_alloc (pm, pm_inuse,
+                          PORT_ALLOC_ANY, PORT_S_ODD,
+                          &pm_index, &ipv4_address, &aport);
+#endif
+
+    if (!rv) {
+        printf("failed-o\n");
+        return;
+    }
+    printf("%s %8d %10x %8d\n", out_f,
+            pm_index, ipv4_address, aport);
+
+    (*firstp)--;
+
+    for (i=0; i < nr_ports; i++) {
+#ifdef LB_PORT
+        rv = cnat_port_alloc (pm, pm_inuse, my_instance,
+                              PORT_ALLOC_DIRECTED, PORT_SINGLE,
+                              &pm_index, &ipv4_address, &aport);
+#else
+        rv = cnat_port_alloc (pm, pm_inuse,
+                              PORT_ALLOC_DIRECTED, PORT_SINGLE,
+                              &pm_index, &ipv4_address, &aport);
+#endif
+        if (rv) {
+            printf("%s %8d %10x %8d\n", out_r,
+                   pm_index, ipv4_address, aport);
+        } else {
+            printf("%s failed\n", out_r);
+            return;
+        }
+    }
+
+    if (nodd_ports > neven_ports) {
+        k1 = nodd_ports;
+        k2 = neven_ports;
+        pt1 = PORT_S_ODD;
+        pt2 = PORT_S_EVEN;
+        out1 = out_o;
+        out2 = out_e;
+    } else {
+        k1= neven_ports;
+        pt1 = PORT_S_EVEN;
+        k2 = nodd_ports;
+        pt2 = PORT_S_ODD;
+        out1 = out_e;
+        out2 = out_o;
+    }
+
+    j = 0;
+    for (i=0; i < k1; i++) {
+#ifdef LB_PORT
+        rv = cnat_port_alloc (pm, pm_inuse, my_instance,
+                                  PORT_ALLOC_DIRECTED, pt1,
+                                  &pm_index, &ipv4_address, &aport);
+#else
+        rv = cnat_port_alloc (pm, pm_inuse,
+                                  PORT_ALLOC_DIRECTED, pt1,
+                                  &pm_index, &ipv4_address, &aport);
+#endif
+        if (rv) {
+            printf("%s %8d %10x %8d\n", out1,
+                   pm_index, ipv4_address, aport);
+        } else {
+            printf("%s failed\n", out1);
+            return;
+        }
+
+        if (j < k2) {
+#ifdef LB_PORT
+            rv = cnat_port_alloc (pm, pm_inuse, my_instance,
+                                  PORT_ALLOC_DIRECTED, pt2,
+                                  &pm_index, &ipv4_address, &aport);
+#else
+            rv = cnat_port_alloc (pm, pm_inuse,
+                                  PORT_ALLOC_DIRECTED, pt2,
+                                  &pm_index, &ipv4_address, &aport);
+#endif
+
+            if (rv) {
+                printf("%s %8d %10x %8d\n", out2,
+                   pm_index, ipv4_address, aport);
+                j++;
+            } else {
+                printf("%s failed\n", __FUNCTION__);
+                return;
+           }
+        }
+    }
+}
+
+void cnat_db_summary_stats (int argc, unsigned long *argv)
+{
+    spp_api_cnat_show_statistics_summary_req_t mp[50000];
+
+    spp_api_cnat_show_statistics_summary_req_t_handler(&(mp[0]));
+}
+
+void cnat_debug_global_test  (int argc, unsigned long *argv)
+{
+    spp_api_cnat_v4_debug_global_t *mp;
+    spp_api_cnat_v4_config_dummy_t mp1;
+    spp_api_cnat_v4_config_icmp_timeout_t mp2[10];
+
+    mp = spp_msg_api_alloc (sizeof (*mp));
+    memset(mp, 0, sizeof (*mp));
+
+
+    mp->_spp_msg_id = SPP_API_CNAT_V4_DEBUG_GLOBAL;
+    mp->debug_flag  = argv[0];
+
+    platform_send_msg(mp);
+
+     mp2[0].default_value = 3;
+
+     spp_api_cnat_v4_config_dummy_t_handler(&mp1);
+     spp_api_cnat_v4_config_icmp_timeout_t_handler(&(mp2[0]));
+}
+
+void cnat_debug_inside_test  (int argc, unsigned long *argv)
+{
+
+    spp_api_cnat_v4_debug_in2out_private_addr_t *mp;
+
+    mp = spp_msg_api_alloc (sizeof (*mp));
+    memset(mp, 0, sizeof (*mp));
+
+
+    mp->_spp_msg_id = SPP_API_CNAT_V4_DEBUG_IN2OUT_PRIVATE_ADDR;
+
+    mp->start_addr = spp_host_to_net_byte_order_32(argv[0]);
+    mp->end_addr = spp_host_to_net_byte_order_32(argv[1]);
+    mp->i_vrf = spp_host_to_net_byte_order_16(argv[2]);
+    mp->debug_flag = spp_host_to_net_byte_order_32(argv[3]);
+
+    platform_send_msg(mp);
+}
+
+void cnat_config_ports_user (int argc, unsigned long *argv)
+{
+    spp_api_cnat_v4_config_port_limit_t *mp;
+
+    mp = spp_msg_api_alloc (sizeof (*mp));
+    memset(mp, 0, sizeof (*mp));
+
+
+    mp->_spp_msg_id = SPP_API_CNAT_V4_CONFIG_PORT_LIMIT;
+
+    mp->port_limit = spp_host_to_net_byte_order_16(argv[0]);
+
+    platform_send_msg(mp);
+
+}
+
+void cnat_debug_outside_test  (int argc, unsigned long *argv)
+{
+
+    spp_api_cnat_v4_debug_out2in_public_addr_t *mp;
+
+    mp = spp_msg_api_alloc (sizeof (*mp));
+    memset(mp, 0, sizeof (*mp));
+
+
+    mp->_spp_msg_id = SPP_API_CNAT_V4_DEBUG_OUT2IN_PUBLIC_ADDR;
+
+    mp->start_addr = spp_host_to_net_byte_order_32(argv[0]);
+    mp->end_addr = spp_host_to_net_byte_order_32(argv[1]);
+    mp->o_vrf = spp_host_to_net_byte_order_16(argv[2]);
+    mp->debug_flag = spp_host_to_net_byte_order_32(argv[3]);
+
+    platform_send_msg(mp);
+}
+
+void cnat_debug_udp_dump (int argc, unsigned long *argv)
+{
+
+    spp_api_cnat_p2mp_debug_request_t *mp;
+
+    mp = spp_msg_api_alloc (sizeof (*mp));
+    memset(mp, 0, sizeof (*mp));
+
+
+    mp->_spp_msg_id = SPP_API_CNAT_P2MP_DEBUG_REQUEST;
+    mp->dump_type = 
+        spp_host_to_net_byte_order_16(CNAT_DEBUG_GENERIC_COMMAND_DEBUG_FLAGS);
+
+    if (spp_host_to_net_byte_order_32(argv[0]) == 1) {
+        mp->param[0] = spp_host_to_net_byte_order_32(
+	                   CNAT_DEBUG_FLAG_UDP_INSIDE_PACKET_DUMP);
+    } else {
+        mp->param[0] = spp_host_to_net_byte_order_32(
+	                   CNAT_DEBUG_FLAG_UDP_OUTSIDE_PACKET_DUMP);
+    }
+    mp->param[1] = spp_host_to_net_byte_order_32(argv[1]);
+    
+    platform_send_msg(mp);
+
+
+
+}
+
+void cnat_debug_udp_crc (int argc, unsigned long *argv)
+{
+    spp_api_cnat_p2mp_debug_request_t *mp;
+
+    mp = spp_msg_api_alloc (sizeof (*mp));
+    memset(mp, 0, sizeof (*mp));
+
+
+    mp->_spp_msg_id = SPP_API_CNAT_P2MP_DEBUG_REQUEST;
+    mp->dump_type = 
+        spp_host_to_net_byte_order_16(CNAT_DEBUG_GENERIC_COMMAND_DEBUG_FLAGS);
+
+    if (spp_host_to_net_byte_order_32(argv[0]) == 1) {
+        mp->param[0] = spp_host_to_net_byte_order_32(
+	                   CNAT_DEBUG_FLAG_UDP_INSIDE_CHECKSUM_MODIFY);
+    } else {
+        mp->param[0] = spp_host_to_net_byte_order_32(
+	                   CNAT_DEBUG_FLAG_UDP_OUTSIDE_CHECKSUM_MODIFY);
+    }
+    mp->param[1] = spp_host_to_net_byte_order_32(argv[1]);
+    
+    platform_send_msg(mp);
+
+}
+
+void cnat_db_allocate_port_cmd (int argc, unsigned long *argv)
+{
+    spp_api_cnat_port_allocate_t *mp;
+
+
+    if (!argc) {
+        printf("no port# defined\n");
+        return;
+    }
+
+    if ( argc < 3) {
+         printf("no port# defined\n");
+        return;
+    }
+
+    if ((argc == 3) && (argv[0] == 0) && (argv[1] == 0) && (argv[2] == 0)) {
+         printf("no port# defined\n");
+        return;
+    }
+
+    mp = spp_msg_api_alloc (sizeof (*mp));
+    memset(mp, 0, sizeof (*mp));
+
+
+    mp->_spp_msg_id = SPP_API_CNAT_PORT_ALLOCATE;
+    mp->nr_ports =  argv[0];
+    mp->nodd_ports = argv[1];
+    mp->neven_ports = argv[2];
+    mp->vrf = 1;
+
+    platform_send_msg(mp);
+}
+
+
+void spp_api_cnat_port_clear_t_handler(spp_api_cnat_port_clear_t *mp)
+{
+    u32 i;
+    cnat_portmap_t *pm = 0;
+    u16 *pm_inuse = 0;
+#ifdef LB_PORT
+    u32 my_instance = 1;
+#endif
+
+
+    /*
+     * this command is run after db create port
+     * vrf is hardcode to 1
+     */
+
+    /* Already have a portmap vector for this VRF? */
+    for (i = 0; i < vec_len(cnat_portmap_indices_by_vrf); i++) {
+        if (cnat_portmap_indices_by_vrf[i] == mp->vrf) {
+            pm = cnat_portmaps[i];
+            pm_inuse = cnat_portmaps_inuse[i];
+            goto found_portmaps;
+        }
+    }
+
+    printf("portmap is not created 0x%d\n",
+            vec_len(cnat_portmap_indices_by_vrf));
+    return;
+
+found_portmaps:
+    if (mp->pm_index >= vec_len(pm)) {
+        printf("invalid port_index 0x%d >=  0x%d\n",
+               mp->pm_index, vec_len(pm));
+         return;
+    }
+
+#ifdef LB_PORT
+    cnat_port_free(pm, pm_inuse, my_instance,
+                   mp->pm_index, PORT_SINGLE, mp->port);
+#else
+    cnat_port_free(pm, pm_inuse,
+                   mp->pm_index, PORT_SINGLE, mp->port);
+#endif
+    printf("\n pm_index %d port %d is deleted\n", mp->pm_index, mp->port);
+}
+
+
+
+void cnat_db_clear_port_cmd (int argc, unsigned long *argv)
+{
+    spp_api_cnat_port_clear_t *mp;
+
+    if (!argc) {
+        printf("no port# defined\n");
+        return;
+    }
+
+    if ( argc < 2 ) {
+         printf("no port# defined\n");
+        return;
+    }
+
+    if (argc > 2) {
+         printf("too many port# defined\n");
+        return;
+    }
+
+    mp = spp_msg_api_alloc (sizeof (*mp));
+    memset(mp, 0, sizeof (*mp));
+
+
+    mp->_spp_msg_id = SPP_API_CNAT_PORT_CLEAR;
+    mp->pm_index =  argv[0];
+    mp->port = argv[1];
+    mp->vrf = 1;
+
+    platform_send_msg(mp);
+}
+
+
+void spp_api_cnat_v4_add_vrf_map_t_handler
+(spp_api_cnat_v4_add_vrf_map_t *mp);
+
+void spp_api_cnat_v4_del_vrf_map_t_handler
+(spp_api_cnat_v4_del_vrf_map_t *mp);
+
+void spp_api_cnat_v4_add_static_port_t_handler
+(spp_api_cnat_v4_add_static_port_t *mp);
+
+void spp_api_cnat_v4_del_static_port_t_handler
+(spp_api_cnat_v4_del_static_port_t *mp);
+
+
+void cnat_db_create_vrfmap_cmd (int argc, unsigned long *argv)
+{
+    spp_api_cnat_v4_add_vrf_map_t *mp;
+
+    if ((argc != 4)) { 
+        printf("need right input\n");
+        return;
+    }
+
+    mp = spp_msg_api_alloc (sizeof (*mp));
+    memset(mp, 0, sizeof (*mp));
+    mp->_spp_msg_id = SPP_API_CNAT_V4_ADD_VRF_MAP;
+    mp->i_vrf = spp_host_to_net_byte_order_16(argv[0]);
+    mp->o_vrf = spp_host_to_net_byte_order_16(argv[1]);
+    mp->start_addr[0] = spp_host_to_net_byte_order_32(argv[2]);
+    mp->end_addr[0] = spp_host_to_net_byte_order_32(argv[3]);
+
+    /*
+     * Some hardcoded values for the vrf ids
+     */
+    mp->i_vrf_id = spp_host_to_net_byte_order_32(0x00000100 | mp->i_vrf);
+    mp->o_vrf_id = spp_host_to_net_byte_order_32(0x00000200 | mp->o_vrf);
+
+    platform_send_msg(mp);
+}
+
+
+void cnat_db_delete_vrfmap_cmd (int argc, unsigned long *argv)
+{
+    spp_api_cnat_v4_del_vrf_map_t *mp;
+
+    if (argc != 4) { 
+        printf("need right input\n");
+        return;
+    }
+
+    mp = spp_msg_api_alloc (sizeof (*mp));
+    memset(mp, 0, sizeof (*mp));
+    mp->_spp_msg_id = SPP_API_CNAT_V4_DEL_VRF_MAP;
+    mp->i_vrf = spp_host_to_net_byte_order_16(argv[0]);
+    mp->start_addr[0] = spp_host_to_net_byte_order_32(argv[2]);
+    mp->end_addr[0] = spp_host_to_net_byte_order_32(argv[3]);
+
+    platform_send_msg(mp);
+}
+
+void cnat_db_add_svi_cmd (int argc, unsigned long *argv)
+{
+    spp_api_cnat_config_svi_params_t *mp;
+
+    if (argc != 3)  {
+        printf("need right input\n");
+        return;
+    }
+
+   
+    mp = spp_msg_api_alloc (sizeof (*mp));
+    memset(mp, 0, sizeof (*mp));
+    mp->_spp_msg_id = SPP_API_CNAT_CONFIG_SVI_PARAMS;
+    mp->uidb_index = spp_host_to_net_byte_order_16(argv[1]);
+    mp->svi_ipv4_addr = spp_host_to_net_byte_order_32(argv[2]);
+    platform_send_msg(mp);
+    return;
+}
+
+
+
+void spp_api_cnat_port_create_t_handler(spp_api_cnat_port_create_t *mp)
+{
+    int i, j, k1, k2;
+    int my_index;
+    u32 ipv4_address;
+    u16 aport;
+    u32 pm_len =0;
+    cnat_errno_t rv;
+    u16   i_vrf;
+    char *out1, *out2, *out_f;
+    port_alloc_t pt1, pt2;
+    cnat_vrfmap_t  *my_vrfmap;
+    cnat_portmap_v2_t *pm = 0;
+    u32 *firstp =0;
+    u32 nr_ports =0;
+    u32 nodd_ports = 0;
+    u32 neven_ports = 0;
+#ifdef LB_PORT
+    u32 my_instance = 1;
+#endif
+    char out_r[12] = "allocated-r";
+    char out_o[12] = "allocated-o";
+    char out_e[12] = "allocated-e";
+#ifndef NO_BULK_LOGGING
+    int nfv9_log_req;
+#endif
+
+    nr_ports = mp->nr_ports;
+    nodd_ports = mp->nodd_ports;
+    neven_ports = mp->neven_ports;
+    i_vrf = mp->vrf;
+
+    /*
+     * this command is run after db create vrfmap
+     * or using vrf id in init function
+     */
+    /* Already have a portmap vector for this VRF? */
+    pool_foreach (my_vrfmap, cnat_map_by_vrf, ({
+        if ((my_vrfmap->status == S_RUN) &&
+            (my_vrfmap->i_vrf == i_vrf)) {
+            pm = my_vrfmap->portmap_list;
+            pm_len = vec_len(pm);
+            if (pm_len) { 
+                goto found_portmaps;
+            }
+        }
+    }));
+
+    printf("need to run db create vrfmaps first for this vrf0x%d\n", pm_len);
+    return;
+
+found_portmaps:
+
+    if ((nr_ports + nodd_ports + neven_ports ) > (PORTS_PER_ADDR)) {
+        printf("invalid port# nr_ports %d + odd %d + even %d "
+               "should be less than 200 \n", nr_ports, nodd_ports, neven_ports);
+        return;
+    }
+
+    /*
+     * first port
+     */
+    firstp = nr_ports ? (&nr_ports) : (nodd_ports ? (&nodd_ports) : (&neven_ports));
+    if (!(*firstp)) {
+        printf("invalid port# nr_ports %d  odd %d  even %d ",
+               nr_ports, nodd_ports, neven_ports);
+    }
+    out_f = nr_ports ? out_r : (nodd_ports ? out_o : out_e);
+
+    rv = cnat_dynamic_port_alloc_v2 (pm,  PORT_ALLOC_ANY, PORT_S_ODD,
+                          &my_index, &ipv4_address, &aport, 
+                          cnat_static_port_range
+#ifndef NO_BULK_LOGGING
+                          , BULKSIZE_FROM_VRFMAP(my_vrfmap), 
+                          &nfv9_log_req
+#endif
+                          , 0,
+                          &(my_vrfmap->rseed_ip)
+                          );
+
+    if (rv != CNAT_SUCCESS) {
+        printf("failed-o\n");
+        return;
+    }
+    printf("%s %8d %10x %8d\n", out_f,
+            my_index, ipv4_address, aport);
+
+    (*firstp)--;
+
+    for (i=0; i < nr_ports; i++) {
+        rv = cnat_dynamic_port_alloc_v2 (pm, PORT_ALLOC_DIRECTED, PORT_SINGLE, 
+                          &my_index, &ipv4_address, &aport,
+                          cnat_static_port_range
+#ifndef NO_BULK_LOGGING
+                          , BULKSIZE_FROM_VRFMAP(my_vrfmap), 
+                          &nfv9_log_req
+#endif
+                          , 0,
+                          &(my_vrfmap->rseed_ip)
+                          );
+
+        if (rv == CNAT_SUCCESS) {
+            printf("%s %8d %10x %8d\n", out_r,
+                   my_index, ipv4_address, aport);
+        } else {
+            printf("%s failed\n", __FUNCTION__);
+            return;
+        }
+    } 
+ 
+    if (nodd_ports > neven_ports) {
+        k1 = nodd_ports;
+        k2 = neven_ports;
+        pt1 = PORT_S_ODD;
+        pt2 = PORT_S_EVEN;
+        out1 = out_o;
+        out2 = out_e;
+    } else {
+        k1= neven_ports;
+        pt1 = PORT_S_EVEN;
+        k2 = nodd_ports;
+        pt2 = PORT_S_ODD;
+        out1 = out_e;
+        out2 = out_o;
+    }
+
+    j = 0;
+    for (i=0; i < k1; i++) {
+        rv = cnat_dynamic_port_alloc_v2 (pm, PORT_ALLOC_DIRECTED, pt1, 
+                          &my_index, &ipv4_address, &aport,
+                          cnat_static_port_range
+#ifndef NO_BULK_LOGGING
+                          , BULKSIZE_FROM_VRFMAP(my_vrfmap), 
+                          &nfv9_log_req
+#endif
+                          , 0,
+                          &(my_vrfmap->rseed_ip)
+                          );
+
+        if (rv == CNAT_SUCCESS) {
+            printf("%s %8d %10x %8d\n", out1,
+                   my_index, ipv4_address, aport);
+        } else {
+            printf("%s failed\n", __FUNCTION__);
+            return;
+        }
+
+        if (j < k2) {
+            rv = cnat_dynamic_port_alloc_v2 (pm, PORT_ALLOC_DIRECTED, pt2,
+                          &my_index, &ipv4_address, &aport,
+                          cnat_static_port_range
+#ifndef NO_BULK_LOGGING
+                          , BULKSIZE_FROM_VRFMAP(my_vrfmap), 
+                          &nfv9_log_req
+#endif
+                          , 0,
+                          &(my_vrfmap->rseed_ip)
+                          );
+            
+            if (rv == CNAT_SUCCESS) {
+                printf("%s %8d %10x %8d\n", out2,
+                   my_index, ipv4_address, aport);
+                j++;
+            } else {
+                printf("%s failed\n", __FUNCTION__);
+            return;
+                return;
+           }
+        }
+    }
+}
+
+
+void cnat_db_create_port_cmd (int argc, unsigned long *argv)
+{
+    spp_api_cnat_port_create_t *mp;
+
+    if (argc != 4) {
+        printf("no proper input defined\n");
+        return;
+    }
+ 
+    if ((argv[0] == 0) && (argv[1] == 0) && (argv[2] == 0)) {
+         printf("no port# defined\n");
+        return;
+    }
+
+    mp = spp_msg_api_alloc (sizeof (*mp));
+    memset(mp, 0, sizeof (*mp));
+
+
+    mp->_spp_msg_id = SPP_API_CNAT_PORT_CREATE;
+    mp->nr_ports =  argv[0];
+    mp->nodd_ports = argv[1];
+    mp->neven_ports = argv[2];
+    mp->vrf = argv[3];
+
+    platform_send_msg(mp);
+}
+
+void spp_api_cnat_port_delete_t_handler(spp_api_cnat_port_delete_t *mp)
+{
+    u32 pm_len;
+    cnat_vrfmap_t  *my_vrfmap;
+    cnat_portmap_v2_t *pm = 0;
+
+    u32 my_index, my_port;
+    u16 i_vrf;
+#ifdef LB_PORT
+    u32 my_instance = 1;
+#endif
+
+    my_index = mp->pm_index;
+    my_port = mp->port;
+    i_vrf = mp->vrf;
+
+    /*
+     * this command is run after db create port
+     */
+    pool_foreach (my_vrfmap, cnat_map_by_vrf, ({
+        if (my_vrfmap->i_vrf == i_vrf) {
+            pm = my_vrfmap->portmap_list;
+            pm_len = vec_len(pm);
+            if (pm_len)  {
+                goto found_portmaps;
+            }
+        }
+    }));
+
+    printf("portmap is not created 0x%d\n",
+            vec_len(cnat_portmap_indices_by_vrf));
+    return;
+
+found_portmaps:
+    if (my_index >= pm_len) {
+        printf("invalid port_index 0x%d >=  0x%d\n",
+               my_index, pm_len);
+         return;
+    }
+
+#ifdef LB_PORT
+    cnat_port_free_v2(pm, my_instance,
+                    my_index, PORT_SINGLE, mp->port,cnat_static_port_range);
+#else 
+    cnat_port_free_v2(pm, my_index, PORT_SINGLE, mp->port,cnat_static_port_range);
+#endif
+    printf("\n pm_index %d port %d is deleted\n", mp->pm_index, mp->port);
+}
+
+void cnat_db_delete_port_cmd (int argc, unsigned long *argv)
+{
+    spp_api_cnat_port_clear_t *mp;
+
+    if (argc != 3) {
+        printf("no proper input defined\n");
+        return;
+    }
+
+    mp = spp_msg_api_alloc (sizeof (*mp));
+    memset(mp, 0, sizeof (*mp));
+
+
+    mp->_spp_msg_id = SPP_API_CNAT_PORT_DELETE;
+    mp->pm_index =  argv[0];
+    mp->port = argv[1];
+    mp->vrf = argv[2];
+    platform_send_msg(mp);
+}
+
+void cnat_db_create_static_fwd_cmd (int argc, unsigned long *argv)
+{
+    spp_api_cnat_v4_add_static_port_t *mp;
+
+    if (argc != 4)  {
+        printf("need right input\n");
+        return;
+    }
+
+    mp = spp_msg_api_alloc (sizeof (*mp));
+    memset(mp, 0, sizeof (*mp));
+    mp->_spp_msg_id = SPP_API_CNAT_V4_ADD_STATIC_PORT;
+    mp->i_vrf = spp_host_to_net_byte_order_16(argv[0]);
+    mp->i_ip = spp_host_to_net_byte_order_32(argv[1]);
+    mp->i_port = spp_host_to_net_byte_order_16(argv[2]);
+    mp->proto = argv[3];
+
+    platform_send_msg(mp);
+    return;
+}
+
+void cnat_db_create_static_fwd_stby_cmd (int argc, unsigned long *argv)
+{
+    spp_api_cnat_v4_add_static_port_t *mp;
+
+    if (argc != 7)  {
+        printf("need right input\n");
+        return;
+    }
+
+    mp = spp_msg_api_alloc (sizeof (*mp));
+    memset(mp, 0, sizeof (*mp));
+    mp->_spp_msg_id = SPP_API_CNAT_V4_ADD_STATIC_PORT;
+    mp->i_vrf = spp_host_to_net_byte_order_16(argv[0]);
+    mp->i_ip = spp_host_to_net_byte_order_32(argv[1]);
+    mp->i_port = spp_host_to_net_byte_order_16(argv[2]);
+    mp->proto = argv[3];
+    mp->o_vrf_id = spp_host_to_net_byte_order_32(argv[4]);
+    mp->o_ip = spp_host_to_net_byte_order_32(argv[5]);
+    mp->o_port = spp_host_to_net_byte_order_16(argv[6]);
+
+printf("\ni_vrf %d, ip 0x%x, port %d, o_ip, port %d", mp->i_vrf, mp->i_ip, mp->i_port, mp->o_ip, mp->o_port);
+
+    platform_send_msg(mp);
+    return;
+}
+
+void cnat_db_delete_static_fwd_cmd (int argc, unsigned long *argv)
+{
+    spp_api_cnat_v4_del_static_port_t *mp;
+
+    if (argc != 3)  {
+        printf("need right input\n");
+        return;
+    }
+    
+    mp = spp_msg_api_alloc (sizeof (*mp));
+    memset(mp, 0, sizeof (*mp));
+    mp->_spp_msg_id = SPP_API_CNAT_V4_DEL_STATIC_PORT;
+    mp->i_vrf = spp_host_to_net_byte_order_16(argv[0]);
+    mp->i_ip = spp_host_to_net_byte_order_32(argv[1]);
+    mp->i_port = spp_host_to_net_byte_order_16(argv[2]);
+
+    platform_send_msg(mp);
+    return;
+}
+
+void cnat_nfv9_create_cmd (int argc, unsigned long *argv)
+{
+    spp_api_cnat_v4_config_nfv9_logging_t *mp;
+
+    if (argc < 3) {
+        printf("nfv9 create i_vrf ip_addr port [refresh_rate] [timeout] [mtu]");
+        return;
+    }
+
+    mp = spp_msg_api_alloc (sizeof (*mp));
+    memset(mp, 0, sizeof (*mp));
+    mp->_spp_msg_id = SPP_API_CNAT_V4_CONFIG_NFV9_LOGGING;
+    mp->enable = 1;
+    mp->i_vrf = spp_host_to_net_byte_order_16(argv[0]);
+
+    mp->ipv4_address = spp_host_to_net_byte_order_32(argv[1]);
+    mp->port = spp_host_to_net_byte_order_16(argv[2]);
+
+    if (argc > 3) {
+	mp->refresh_rate = spp_host_to_net_byte_order_16(argv[3]);
+	mp->timeout_rate = spp_host_to_net_byte_order_16(argv[4]);
+	mp->path_mtu = spp_host_to_net_byte_order_16(argv[5]);
+    } else {
+	mp->refresh_rate = spp_host_to_net_byte_order_16(1000);
+	mp->timeout_rate = spp_host_to_net_byte_order_16(30);
+	mp->path_mtu = spp_host_to_net_byte_order_16(1500);
+    }
+   platform_send_msg(mp);
+}
+
+void cnat_delete_cgn (int argc, unsigned long *argv)
+{
+    void *mp_send;
+    spp_api_cnat_del_cgn_t *mp;
+    u32 mp_size;
+
+    mp_size = sizeof(spp_api_cnat_del_cgn_t);
+
+    mp = spp_msg_api_alloc(mp_size);
+    memset(mp, 0, mp_size);
+
+    mp->_spp_msg_id = SPP_API_CNAT_DEL_CGN;
+
+    mp_send = mp;
+
+    platform_send_msg(mp);
+}
+
+void cnat_debug_global_all (int argc, unsigned long *argv)
+{
+    spp_api_cnat_v4_debug_global_t *mp;
+
+    mp = spp_msg_api_alloc (sizeof (*mp));
+    memset(mp, 0, sizeof (*mp));
+
+    mp->_spp_msg_id = SPP_API_CNAT_V4_DEBUG_GLOBAL;
+    mp->debug_flag  = CNAT_DEBUG_GLOBAL_ALL;
+
+    platform_send_msg(mp);
+}
+
+void cnat_debug_global_none (int argc, unsigned long *argv)
+{
+    spp_api_cnat_v4_debug_global_t *mp;
+
+    mp = spp_msg_api_alloc (sizeof (*mp));
+    memset(mp, 0, sizeof (*mp));
+
+    mp->_spp_msg_id = SPP_API_CNAT_V4_DEBUG_GLOBAL;
+    mp->debug_flag  = CNAT_DEBUG_NONE;
+
+    platform_send_msg(mp);
+}
+
+
+void cnat_bulk_cmd (int argc, unsigned long *argv)
+{
+    void *mp_send;
+
+    if (argc < 1) {
+	printf("\nargc = %d", argc);
+        printf("\n1. bulk cmd [0=static-port, 1=bulk_vrf, 2=policy_knob]");
+        return;
+    }
+
+
+    switch (argv[0]) {
+        case 0:
+	{
+	    spp_api_cnat_v4_bulk_add_delete_static_port_t *mp;
+	    spp_api_cnat_v4_add_static_port_t *mp_sp;
+	    u32 mp_size = 
+	            sizeof(spp_api_cnat_v4_bulk_add_delete_static_port_t) +
+	                  (sizeof(spp_api_cnat_v4_add_static_port_t))*2;
+
+	    mp = spp_msg_api_alloc(mp_size);
+	    memset(mp, 0, mp_size);
+
+	    mp->_spp_msg_id = SPP_API_CNAT_V4_BULK_ADD_DELETE_STATIC_PORT;
+
+	    mp->num_static_port_entries = spp_host_to_net_byte_order_32(3);
+
+	    mp_sp = (spp_api_cnat_v4_add_static_port_t *) &(mp->pad2);
+
+	    mp_sp->_spp_msg_id = spp_host_to_net_byte_order_16(
+				SPP_API_CNAT_V4_ADD_STATIC_PORT);
+	    mp_sp->proto = 2;
+	    mp_sp->i_vrf = spp_host_to_net_byte_order_16(0x1);
+	    mp_sp->i_ip = spp_host_to_net_byte_order_32(0x11111111);
+	    mp_sp->i_port = spp_host_to_net_byte_order_16(0x7777);
+
+	    mp_sp++;
+
+
+	    mp_sp->_spp_msg_id = spp_host_to_net_byte_order_16(
+				SPP_API_CNAT_V4_ADD_STATIC_PORT);
+	    mp_sp->proto = 1;
+	    mp_sp->i_vrf = spp_host_to_net_byte_order_16(0x1);
+	    mp_sp->i_ip = spp_host_to_net_byte_order_32(0x22222222);
+	    mp_sp->i_port = spp_host_to_net_byte_order_16(0x6666);
+
+	    mp_sp++;
+
+
+	    mp_sp->_spp_msg_id = spp_host_to_net_byte_order_16(
+				SPP_API_CNAT_V4_ADD_STATIC_PORT);
+	    mp_sp->proto = 1;
+	    mp_sp->i_vrf = spp_host_to_net_byte_order_16(0x1);
+	    mp_sp->i_ip = spp_host_to_net_byte_order_32(0x33333333);
+	    mp_sp->i_port = spp_host_to_net_byte_order_16(0x5555);
+
+	    mp_send = mp;
+
+	}
+	break;
+
+	case 1:
+	{
+	    spp_api_cnat_v4_bulk_vrf_map_t *mp;
+	    spp_api_cnat_v4_single_vrf_map_req *mp_sp;
+
+	    u32 mp_size = sizeof(spp_api_cnat_v4_bulk_vrf_map_t) +
+	                  (sizeof(spp_api_cnat_v4_single_vrf_map_req))*2;
+
+	    mp = spp_msg_api_alloc(mp_size);
+	    memset(mp, 0, mp_size);
+
+	    mp->_spp_msg_id = SPP_API_CNAT_V4_BULK_VRF_MAP;
+
+	    mp->num_vrfmap_entries = spp_host_to_net_byte_order_32(3);
+
+	    mp_sp = (spp_api_cnat_v4_single_vrf_map_req *)
+	                &(mp->vrf_policy_enable);
+
+	    mp_sp->i_vrf_id = spp_host_to_net_byte_order_32(0xe0000001);
+	    mp_sp->o_vrf_id = spp_host_to_net_byte_order_32(0xe0000000);
+	    mp_sp->i_vrf = spp_host_to_net_byte_order_16(0x1);
+	    mp_sp->o_vrf = spp_host_to_net_byte_order_16(0x0);
+	    mp_sp->start_addr = spp_host_to_net_byte_order_32(0x11111100);
+	    mp_sp->end_addr = spp_host_to_net_byte_order_32(0x111111ff);
+	    mp_sp->vrf_policy_enable = spp_host_to_net_byte_order_16(0x3);
+	    mp_sp->tcp_mss_value = spp_host_to_net_byte_order_16(0x111);
+	    mp_sp->vrf_nfv9_logging_ipv4_address = spp_host_to_net_byte_order_32(0x11000001);
+	    mp_sp->vrf_nfv9_logging_udp_port = spp_host_to_net_byte_order_16(0x1001);
+	    mp_sp->vrf_nfv9_refresh_rate = spp_host_to_net_byte_order_16(0x100);
+	    mp_sp->vrf_nfv9_timeout_rate = spp_host_to_net_byte_order_16(0x10);
+	    mp_sp->vrf_nfv9_path_mtu = spp_host_to_net_byte_order_16(0x100);
+
+	    mp_sp++;
+
+	    mp_sp->i_vrf_id = spp_host_to_net_byte_order_32(0xe0000002);
+	    mp_sp->o_vrf_id = spp_host_to_net_byte_order_32(0xe0000000);
+	    mp_sp->i_vrf = spp_host_to_net_byte_order_16(0x2);
+	    mp_sp->o_vrf = spp_host_to_net_byte_order_16(0x0);
+	    mp_sp->start_addr = spp_host_to_net_byte_order_32(0x22220000);
+	    mp_sp->end_addr = spp_host_to_net_byte_order_32(0x2222ffff);
+	    mp_sp->vrf_policy_enable = spp_host_to_net_byte_order_16(0x1);
+	    mp_sp->tcp_mss_value = spp_host_to_net_byte_order_16(0x222);
+	    mp_sp->vrf_nfv9_logging_ipv4_address = spp_host_to_net_byte_order_32(0x22000002);
+	    mp_sp->vrf_nfv9_logging_udp_port = spp_host_to_net_byte_order_16(0x2002);
+	    mp_sp->vrf_nfv9_refresh_rate = spp_host_to_net_byte_order_16(0x200);
+	    mp_sp->vrf_nfv9_timeout_rate = spp_host_to_net_byte_order_16(0x20);
+	    mp_sp->vrf_nfv9_path_mtu = spp_host_to_net_byte_order_16(0x200);
+
+	    mp_sp++;
+
+	    mp_sp->i_vrf_id = spp_host_to_net_byte_order_32(0xe0000003);
+	    mp_sp->o_vrf_id = spp_host_to_net_byte_order_32(0xe0000007);
+	    mp_sp->i_vrf = spp_host_to_net_byte_order_16(0x3);
+	    mp_sp->o_vrf = spp_host_to_net_byte_order_16(0x7);
+	    mp_sp->start_addr = spp_host_to_net_byte_order_32(0x33333000);
+	    mp_sp->end_addr = spp_host_to_net_byte_order_32(0x33333fff);
+	    mp_sp->vrf_policy_enable = spp_host_to_net_byte_order_16(0x1);
+	    mp_sp->tcp_mss_value = spp_host_to_net_byte_order_16(0x333);
+	    mp_sp->vrf_nfv9_logging_ipv4_address = spp_host_to_net_byte_order_32(0x33000003);
+	    mp_sp->vrf_nfv9_logging_udp_port = spp_host_to_net_byte_order_16(0x3003);
+	    mp_sp->vrf_nfv9_refresh_rate = spp_host_to_net_byte_order_16(0x300);
+	    mp_sp->vrf_nfv9_timeout_rate = spp_host_to_net_byte_order_16(0x30);
+	    mp_sp->vrf_nfv9_path_mtu = spp_host_to_net_byte_order_16(0x300);
+
+	    mp_send = mp;
+	}
+	break;
+
+	case 2:
+	{
+	    spp_api_cnat_v4_bulk_policy_knob_t *mp;
+
+	    u32 mp_size = 
+	        sizeof(spp_api_cnat_v4_bulk_policy_knob_t) +
+	        (sizeof(spp_api_cnat_v4_single_vrf_map_req))*2;
+
+	    mp = spp_msg_api_alloc(mp_size);
+	    memset(mp, 0, mp_size);
+
+	    mp->_spp_msg_id = SPP_API_CNAT_V4_BULK_POLICY_KNOB;
+
+	    mp->port_limit = spp_host_to_net_byte_order_16(345);
+	    mp->icmp_timeout = spp_host_to_net_byte_order_16(300);
+	    mp->udp_init_timeout = spp_host_to_net_byte_order_16(175);
+	    mp->udp_act_timeout = spp_host_to_net_byte_order_16(133);
+	    mp->tcp_init_timeout = spp_host_to_net_byte_order_16(222);
+	    mp->tcp_act_timeout = spp_host_to_net_byte_order_16(2345);
+
+	    mp->nat_policy_enable = spp_host_to_net_byte_order_32(0x7);
+
+	    mp->global_nfv9_logging_ipv4_address = spp_host_to_net_byte_order_32(0x77777777);
+	    mp->global_nfv9_logging_udp_port = spp_host_to_net_byte_order_16(0x7007);
+	    mp->global_nfv9_refresh_rate = spp_host_to_net_byte_order_16(0x700);
+	    mp->global_nfv9_timeout_rate = spp_host_to_net_byte_order_16(0x70);
+	    mp->global_nfv9_path_mtu = spp_host_to_net_byte_order_16(0x700);
+
+	    mp_send = mp;
+	}
+	break;
+
+
+	default:
+	   printf("\nargv[2] = %d", argv[2]);
+	   printf("\n2. bulk cmd [0=static-port, 1=bulk_vrf, 2=policy_knob+bulk_vrf]");
+	   return;
+
+    }
+    platform_send_msg(mp_send);
+}
+
+void cnat_nfv9_delete_cmd (int argc, unsigned long *argv)
+{
+    spp_api_cnat_v4_config_nfv9_logging_t *mp;
+
+    if (argc != 1) {
+        printf("nfv9 delete i_vrf ");
+        return;
+    }
+
+    mp = spp_msg_api_alloc (sizeof (*mp));
+    memset(mp, 0, sizeof (*mp));
+    mp->_spp_msg_id = SPP_API_CNAT_V4_CONFIG_NFV9_LOGGING;
+    mp->enable = 0;
+    mp->i_vrf = spp_host_to_net_byte_order_16(argv[0]);
+    platform_send_msg(mp);
+}
+
+void cnat_generic_cmd (int argc, unsigned long *argv)
+{
+    spp_api_cnat_generic_command_request_t *mp;
+
+    if (argc != 9) {
+        printf("generic command core type p1 p2 p3 p4 p5 p6 p7 ");
+        return;
+    }
+
+    /*
+     * Allocate a large buffer for message req and resp structure
+     */
+    mp = spp_msg_api_alloc (MAX_DEBUG_BUFFER_SIZE);
+    memset(mp, 0, MAX_DEBUG_BUFFER_SIZE);
+    mp->_spp_msg_id = SPP_API_CNAT_GENERIC_COMMAND_REQUEST;
+    mp->core_num = argv[0];
+    mp->params[0] = spp_host_to_net_byte_order_32(argv[1]);
+    mp->params[1] = spp_host_to_net_byte_order_32(argv[2]);
+    mp->params[2] = spp_host_to_net_byte_order_32(argv[3]);
+    mp->params[3] = spp_host_to_net_byte_order_32(argv[4]);
+    mp->params[4] = spp_host_to_net_byte_order_32(argv[5]);
+    mp->params[5] = spp_host_to_net_byte_order_32(argv[6]);
+    mp->params[6] = spp_host_to_net_byte_order_32(argv[7]);
+    mp->params[7] = spp_host_to_net_byte_order_32(argv[8]);
+    platform_send_msg(mp);
+}
+
+u32 icmp_sent_timestamps; /* 32 KB array per core */
+u8 v4_pkt_count = 0;
+
+cnat_icmp_msg_t icmp_msg_gen_allowed ()
+{
+#ifdef DISABLE_ICMP_THROTTLE_FOR_DEBUG_PURPOSE
+    return CNAT_ICMP_MSG;
+#else
+    u32 current_timestamp;
+    spp_node_main_vector_t *nmv;
+    u32 updated_timestamp;
+
+    v4_pkt_count ++;
+        
+    nmv = spp_get_node_main_vectorized_inline();
+
+    current_timestamp = nmv->ticks / nmv->ticks_per_second;
+    
+    PLATFORM_UPDATE_TIMESTAMP
+    if (PREDICT_FALSE(icmp_sent_timestamps != updated_timestamp)) {
+        v4_pkt_count = 1;
+        /* update timestamp */
+        icmp_sent_timestamps = updated_timestamp;
+    } 
+    if (PREDICT_TRUE(v4_pkt_count <= cnat_main_db_icmp_rate_limit_core)) {
+            return CNAT_ICMP_MSG;
+    } else {
+            return CNAT_NO_ICMP_MSG;
+    }
+#endif
+}
+
+u32 v6_icmp_sent_timestamps; /* 32 KB array per core */
+u8 v6_pkt_count = 0;
+
+cnat_icmp_msg_t v6_icmp_msg_gen_allowed ()
+{
+#ifdef DISABLE_ICMP_THROTTLE_FOR_DEBUG_PURPOSE
+    return CNAT_ICMP_MSG;
+#else
+    u32 current_timestamp;
+    spp_node_main_vector_t *nmv;
+    u32 updated_timestamp;
+
+    nmv = spp_get_node_main_vectorized_inline();
+
+    current_timestamp = nmv->ticks / nmv->ticks_per_second;
+    PLATFORM_UPDATE_TIMESTAMP
+    v6_pkt_count ++;
+
+    if (PREDICT_FALSE(v6_icmp_sent_timestamps != updated_timestamp)) {
+        v6_pkt_count = 1;
+        /* update timestamp */
+        v6_icmp_sent_timestamps = updated_timestamp;
+    }
+    if (PREDICT_TRUE(v6_pkt_count <= cnat_main_db_icmp_rate_limit_core)) {
+            return CNAT_ICMP_MSG;
+    } else {
+            return CNAT_NO_ICMP_MSG;
+    }
+#endif
+}
+
+u32 v4_udp_crc_zero_timestamps; 
+u32 v4_udp_crc_zero_pkt_count = 0;
+int v4_crc_zero_udp_allowed ()
+{
+    PLATFORM_V4_CRC_ZERO_UDP_ALLOWED
+    /* Currently not supported for Brahmos. we need to take care of this */
+   spp_node_main_vector_t *nmv;
+   u32 hash_value, current_timestamp;
+
+    nmv = spp_get_node_main_vectorized_inline();
+
+     current_timestamp = nmv->ticks / nmv->ticks_per_second;
+    v4_udp_crc_zero_pkt_count++;
+    if (PREDICT_FALSE(v4_udp_crc_zero_timestamps != current_timestamp)) {
+        v4_udp_crc_zero_pkt_count = 1;
+        v4_udp_crc_zero_timestamps = current_timestamp;
+     }
+    if (PREDICT_TRUE(v4_udp_crc_zero_pkt_count <= 
+                crc_zero_udp_rate_limit_core)) {
+        return 1;
+    } else {
+        return 0;
+    }
+}
+
+/*
+ * ipv4_decr_ttl_n_calc_csum()
+ * - It decrements the TTL and calculates the incremental IPv4 checksum
+ */
+
+ALWAYS_INLINE(
+void ipv4_decr_ttl_n_calc_csum(ipv4_header *ipv4))
+{
+    u32 checksum;
+    u16 old;
+
+    old = ntohs(*(u16 *)&ipv4->ttl);
+
+    /* Decrement TTL */
+    ipv4->ttl--;
+
+    /* Calculate incremental checksum */
+    checksum = old + (~ntohs(*(u16 *)&ipv4->ttl) & 0xFFFF);
+    checksum += ntohs(ipv4->checksum);
+    checksum = (checksum & 0xFFFF) + (checksum >> 16);
+    ipv4->checksum = htons(checksum + (checksum >> 16));
+}
+
+ALWAYS_INLINE(
+void calc_ipv4_checksum (ipv4_header *ipv4))
+{
+    u16 *data = (u16 *) ipv4;
+    u32 checksum = 0;
+
+    checksum = crc_calc(ipv4);
+
+    /* Now produce the 1's complement */
+    ipv4->checksum = spp_host_to_net_byte_order_16(((u16) (~(u16)checksum)));
+}
+
+ALWAYS_INLINE(
+void calc_v4_icmp_checksum (icmp_v4_t *icmp, int ipv4_payload_size))
+{
+    u16 *data = (u16 *) icmp;
+    int num_hwords = (ipv4_payload_size)/2;
+    u32 checksum = 0;
+
+    icmp->checksum = 0;
+    if (PREDICT_FALSE((ipv4_payload_size%2) != 0)) {
+        num_hwords += 1; 
+        /* Append 0's in the last octet */
+        *((u8 *)data + ipv4_payload_size) = 0;
+    }
+    while (num_hwords) {
+        checksum += (u32)spp_net_to_host_byte_order_16(data++);
+        num_hwords--;
+    }
+
+    /* Add in the carry of the original sum */
+    checksum = (checksum & 0xFFFF) + (checksum >> 16);
+    /* Add in the carry of the final sum */
+    checksum = (checksum & 0xFFFF) + (checksum >> 16);
+    /* Now produce the 1's complement */
+    icmp->checksum = spp_host_to_net_byte_order_16(((u16) (~(u16)checksum)));
+}
+
+ALWAYS_INLINE(
+void calc_v6_icmp_checksum (ipv6_header_t *ipv6, u16 ip_payload_size))
+{
+    u16 *data;
+    u16 *data1;
+    int i;
+    icmp_v6_t *icmp;
+    int num_hwords = (ip_payload_size)/2;
+    u32 checksum = 0;
+    pseudo_v6_header_t pseudo_header;
+
+    icmp = (icmp_v6_t *) ((u8 *)ipv6 + IPV6_HDR_LEN);
+    data = (u16 *) icmp;
+    icmp->checksum = 0;
+
+#if 1
+    if (PREDICT_FALSE((ip_payload_size%2) != 0)) {
+        num_hwords += 1;
+        /* Append 0's in the last octet */
+        *((u8 *)data + ip_payload_size) = 0;
+    }
+#endif
+
+    /* construct the pseudo header */
+
+    pseudo_header.src_addr[0] = ipv6->src_addr[0];
+    pseudo_header.src_addr[1] = ipv6->src_addr[1];
+    pseudo_header.src_addr[2] = ipv6->src_addr[2];
+    pseudo_header.src_addr[3] = ipv6->src_addr[3];
+    pseudo_header.dst_addr[0] = ipv6->dst_addr[0];
+    pseudo_header.dst_addr[1] = ipv6->dst_addr[1];
+    pseudo_header.dst_addr[2] = ipv6->dst_addr[2];
+    pseudo_header.dst_addr[3] = ipv6->dst_addr[3];
+    pseudo_header.payload_length = spp_host_to_net_byte_order_16(ip_payload_size);
+    pseudo_header.next_header = spp_host_to_net_byte_order_16(ipv6->next_header);
+
+    data1 = (u16 *) &pseudo_header;
+
+    /* sizeof(pseudo_v6_header_t) = 36 */
+    for (i = 0; i < 18; i++) {
+       checksum += (u32)spp_net_to_host_byte_order_16(data1++);
+    }
+
+checksum_calc:
+
+    if (PREDICT_TRUE(num_hwords)) {
+        checksum += (u32)spp_net_to_host_byte_order_16(data);
+        num_hwords--;
+        data++;
+        goto checksum_calc;
+    }
+            
+    /* Add in the carry of the original sum */
+    checksum = (checksum & 0xFFFF) + (checksum >> 16);
+    /* Add in the carry of the final sum */
+    checksum = (checksum & 0xFFFF) + (checksum >> 16);
+    /* Now produce the 1's complement */
+    icmp->checksum = spp_host_to_net_byte_order_16(((u16) (~(u16)checksum)));
+}
+
+void icmp_error_generate_v6 (spp_ctx_t *ctx, u8 icmp_type,
+                              u8 icmp_code, u16 uidb_index) {
+
+    u16          ip_hdr_len, ip_payload_size;
+    u32         *src_p, * dst_p;
+    icmp_v6_t   *icmp;
+    int          i;
+    ipv6_header_t *ip_old, *ip_new;
+    u16         icmp_payload_len;
+    
+    /*
+     * As per RFC 2463, we limit the maximum size of generated ICMPv6 message to     * 1280. And hence if the packet is bigger than 1280, then it needs to be
+     * truncated. Also, if the packet had multiple chained buffers, we need to
+     * free all chained buffers, except the first one.
+     */
+    free_all_but_first_chained_buffers(ctx);
+
+    ip_hdr_len      = IPV6_HDR_LEN;
+    /* offset to ip payload */
+    
+    ip_old = (ipv6_header_t *)PLATFORM_CTX_CURRENT_HDR;
+    ip_new = (ipv6_header_t *) ((u8 *) PLATFORM_CTX_CURRENT_HDR - ICMPV6_ERR_SIZE);
+    icmp   = (icmp_v6_t*) ( (u8*)ip_new + ip_hdr_len);
+ 
+     icmp_payload_len = ip_hdr_len + 
+         spp_net_to_host_byte_order_16(&(ip_old->payload_length)) ;
+
+     ip_payload_size = ICMPV6_HDR_SIZE + icmp_payload_len;
+    /*
+     * There is no easy way to predict this case as the probablity that the IPv6
+     * pkt is big depends on the type of traffic.  Let us optimize the big
+     * pkt case as it involves more processing
+     * 
+     * If the pkt size exceeds IPV6_MIN_PATH_MTU truncate it to IPV6_MIN_PATH_MTU
+     */
+     if (PREDICT_TRUE((ip_payload_size + ip_hdr_len) > IPV6_MIN_PATH_MTU)) {
+         ip_payload_size = IPV6_MIN_PATH_MTU - ip_hdr_len;
+     }
+
+   /* Following ICMP op has to be after ip header being copied */
+    icmp->type       = icmp_type;
+    icmp->code       = icmp_code;
+    
+    ip_new->version_trafficclass_flowlabel = spp_host_to_net_byte_order_32(
+                                              VERSION_TRAFFICCLASS_FLOWLABEL);
+    ip_new->payload_length        = spp_host_to_net_byte_order_16(ip_payload_size);
+    ip_new->next_header           = IPV6_PROTO_ICMPV6;
+    ip_new->hop_limit             = 64;
+    ip_new->dst_addr[0]           = ip_old->src_addr[0];
+    ip_new->dst_addr[1]           = ip_old->src_addr[1];
+    ip_new->dst_addr[2]           = ip_old->src_addr[2];
+    ip_new->dst_addr[3]           = ip_old->src_addr[3];
+    
+    ip_new->src_addr[0]           = 
+      spp_host_to_net_byte_order_32(svi_params_array[uidb_index].ipv6_addr[0]);
+    ip_new->src_addr[1]           =
+      spp_host_to_net_byte_order_32(svi_params_array[uidb_index].ipv6_addr[1]);
+    ip_new->src_addr[2]           = 
+      spp_host_to_net_byte_order_32(svi_params_array[uidb_index].ipv6_addr[2]);
+    ip_new->src_addr[3]           = 
+      spp_host_to_net_byte_order_32(svi_params_array[uidb_index].ipv6_addr[3]);
+   /* calc checksum for icmp */
+
+    calc_v6_icmp_checksum(ip_new, ip_payload_size);
+#if 0
+    printf("Flow = 0x%x\n", ip_new->version_trafficclass_flowlabel);
+    printf("Hoplimit = 0x%x\n", ip_new->hop_limit);
+    printf("Length= 0x%x\n", ip_new->payload_length);
+    printf("Next header = 0x%x\n", ip_new->next_header);
+    printf("Src add0 = 0x%x\n", ip_new->src_addr[0]);
+    printf("Src add1 = 0x%x\n", ip_new->src_addr[1]);
+    printf("Src add2 = 0x%x\n", ip_new->src_addr[2]);
+    printf("Src add3 = 0x%x\n", ip_new->src_addr[3]);
+    printf("Dst add0 = 0x%x\n", ip_new->dst_addr[0]);
+    printf("Dst add1 = 0x%x\n", ip_new->dst_addr[1]);
+    printf("Dst add2 = 0x%x\n", ip_new->dst_addr[2]);
+    printf("Dst add3 = 0x%x\n", ip_new->dst_addr[3]);
+    printf("Icmp type = 0x%x\n", icmp->type);
+    printf("Icmp code = 0x%x\n", icmp->code);
+
+    printf("\n\nICMP packet:\n");
+    for (i = 0; i < 10; i ++) {
+        printf("0x%x " , *((u8 *)icmp + i));
+        if ((i%16) == 15) {
+            printf("\n");
+        }
+    }
+#endif
+
+    ctx->current_header -= ICMPV6_ERR_SIZE;
+    ctx->current_length = ip_payload_size + ip_hdr_len; 
+    PLATFORM_CNAT_SET_TX_VRF(ctx,uidb_index);
+}
+
+void icmp_error_generate_v2 (ipv4_header *ip, u8 icmp_type,
+                          u8 icmp_code, u16 mtu, u32 src_ip)
+{
+
+    u16          ip_hdr_len, ip_payload_size;
+    u32         *src_p, * dst_p;
+    icmp_v4_t   *icmp;
+
+    ip_hdr_len  = (ip->version_hdr_len_words & 0xf) << 2;   /* offset to ip payload */
+    icmp        = (icmp_v4_t*) ( (u8*)ip + ip_hdr_len);
+    ip_payload_size = sizeof(icmp_v4_t) + ip_hdr_len +
+        ICMP_UNREACHABLE_IP_PAYLOAD_SIZE;
+
+    src_p = (u32*)
+            ((u8*)ip + ip_hdr_len + ICMP_UNREACHABLE_IP_PAYLOAD_SIZE - 4);
+    dst_p = (u32*) ((u8*)src_p + sizeof(ipv4_header) +
+                     sizeof(icmp_v4_t));
+
+    while(src_p >= (u32*)ip)  *dst_p-- = *src_p--;
+
+   /* Following ICMP op has to be after ip header being copied */
+    icmp->type       = icmp_type;
+    icmp->code       = icmp_code;
+    icmp->identifier = 0;
+    icmp->sequence   = 0;
+    if(PREDICT_FALSE(mtu != 0)) {
+        icmp->sequence   = spp_host_to_net_byte_order_16(mtu); 
+    }
+
+
+   /* build icmp header, keep original tos, identification values */
+    ip->version_hdr_len_words = 0x45;
+    ip->total_len_bytes       = sizeof(ipv4_header) + ip_payload_size;
+    ip->total_len_bytes       = spp_host_to_net_byte_order_16(ip->total_len_bytes);
+    ip->frag_flags_offset     = 0;
+    ip->ttl                   = 64;
+    ip->protocol              = ICMP_PROT;
+    ip->checksum              = 0;
+    ip->dest_addr             = ip->src_addr;
+    ip->src_addr              = spp_host_to_net_byte_order_32(src_ip);
+
+   /* calc checksum for ip and icmp */
+
+    calc_ipv4_checksum(ip);
+    calc_v4_icmp_checksum( (icmp_v4_t *) ((u8*) ip + sizeof(ipv4_header)),
+                        ip_payload_size);
+}
+
+void icmp_error_generate (ipv4_header *ip, u8 icmp_type, 
+                          u8 icmp_code, u16 uidb_index) {
+ 
+    u16          ip_hdr_len, ip_payload_size;
+    u32         *src_p, * dst_p;
+    icmp_v4_t   *icmp;
+    
+    ip_hdr_len  = (ip->version_hdr_len_words & 0xf) << 2;   /* offset to ip payload */
+    icmp        = (icmp_v4_t*) ( (u8*)ip + ip_hdr_len);
+    ip_payload_size = sizeof(icmp_v4_t) + ip_hdr_len +
+        ICMP_UNREACHABLE_IP_PAYLOAD_SIZE;
+
+    src_p = (u32*)
+            ((u8*)ip + ip_hdr_len + ICMP_UNREACHABLE_IP_PAYLOAD_SIZE - 4);
+    dst_p = (u32*) ((u8*)src_p + sizeof(ipv4_header) +
+                     sizeof(icmp_v4_t));
+
+    while(src_p >= (u32*)ip)  *dst_p-- = *src_p--;
+
+   /* Following ICMP op has to be after ip header being copied */
+    icmp->type       = icmp_type;
+    icmp->code       = icmp_code;
+    icmp->identifier = 0;
+    icmp->sequence   = 0;
+
+
+   /* build icmp header, keep original tos, identification values */
+    ip->version_hdr_len_words = 0x45;
+    ip->total_len_bytes       = sizeof(ipv4_header) + ip_payload_size;
+    ip->total_len_bytes       = spp_host_to_net_byte_order_16(ip->total_len_bytes);
+    ip->frag_flags_offset     = 0;
+    ip->ttl                   = 64;
+    ip->protocol              = ICMP_PROT;
+    ip->checksum              = 0;
+    ip->dest_addr             = ip->src_addr;
+
+    ip->src_addr              = spp_host_to_net_byte_order_32(svi_params_array[uidb_index].ipv4_addr);
+
+   /* calc checksum for ip and icmp */
+
+    calc_ipv4_checksum(ip);
+    calc_v4_icmp_checksum( (icmp_v4_t *) ((u8*) ip + sizeof(ipv4_header)),
+                        ip_payload_size);
+#if 0 
+    printf("version_hdr_len_words = 0x%x\n", ip->version_hdr_len_words);
+    printf("total_len_bytes = 0x%x\n", ip->total_len_bytes);
+    printf("Frag = 0x%x\n", ip->frag_flags_offset);
+    printf("ttl = 0x%x\n", ip->ttl);
+    printf("Protocol = 0x%x\n", ip->protocol);
+    printf("checksum = 0x%x\n", ip->checksum);
+    printf("Dest addr = 0x%x\n", ip->dest_addr);
+    printf("Src addr  = 0x%x\n", ip->src_addr);
+    printf("Icmp type = 0x%x\n", icmp->type);
+    printf("Icmp code = 0x%x\n", icmp->code);
+#endif
+
+}
+
+int icmpv4_generate_with_throttling_v2 (spp_ctx_t *ctx, ipv4_header *ipv4, 
+                                     int icmp_type, int icmp_code, 
+                                     u16 mtu, u32 src_ip)
+{
+    u16          ip_hdr_len;
+    icmp_v4_t   *icmp;
+    u16 rx_uidb_index = ctx->ru.rx.uidb_index;
+    if (icmp_msg_gen_allowed()) { 
+        free_all_but_first_chained_buffers(ctx);
+        icmp_error_generate_v2(ipv4, icmp_type, icmp_code, mtu, src_ip);
+        ctx->current_length = (u16)
+            ((u8*)ctx->current_header - ctx->packet_data) +
+            spp_net_to_host_byte_order_16(&ipv4->total_len_bytes);
+        PLATFORM_CNAT_SET_TX_VRF(ctx,rx_uidb_index);
+        return 1;
+    } else {
+        return 0;
+    }
+}
+
+int icmpv4_generate_with_throttling (spp_ctx_t *ctx, ipv4_header *ipv4, 
+                                     u16 rx_uidb_index)
+{
+    int icmp_type;
+    int icmp_code;
+    
+    if (icmp_msg_gen_allowed()) {
+        /* ICMP error would be small, so one buffer is enough. Clear the other */
+        free_all_but_first_chained_buffers(ctx);
+
+        icmp_type = ICMPV4_TIMEEXCEEDED;
+        icmp_code = ICMPV4_TIMTTL;
+        icmp_error_generate(ipv4, icmp_type, icmp_code, rx_uidb_index);
+        ctx->current_length = (u16)
+            ((u8*)ctx->current_header - ctx->packet_data) +
+            spp_net_to_host_byte_order_16(&ipv4->total_len_bytes);
+        PLATFORM_CNAT_SET_TX_VRF(ctx,rx_uidb_index);
+        return 1;
+    } else {
+        return 0;
+    }
+}
+
+int icmpv4_generate_with_throttling_v1 (spp_ctx_t *ctx, ipv4_header *ipv4, 
+                                     u16 rx_uidb_index, u32 type, u32 code)
+{
+    if (icmp_msg_gen_allowed()) {
+        /* ICMP error would be small, so one buffer is enough. Clear the other */
+        free_all_but_first_chained_buffers(ctx);
+
+        icmp_error_generate(ipv4, type, code, rx_uidb_index);
+        ctx->current_length = (u16)
+            ((u8*)ctx->current_header - ctx->packet_data) +
+            spp_net_to_host_byte_order_16(&ipv4->total_len_bytes);
+        PLATFORM_CNAT_SET_TX_VRF(ctx,rx_uidb_index);
+        return 1;
+    } else {
+        return 0;
+    }
+}
+
+    
+int icmpv6_generate_with_throttling (spp_ctx_t *ctx, ipv6_header_t *ipv6,
+                                     u16 rx_uidb_index)
+{
+    int icmp_type;
+    int icmp_code;
+
+    if (v6_icmp_msg_gen_allowed()) {
+        icmp_type = ICMPV6_TIMEEXCEEDED;
+        icmp_code = ICMPV6_TIMTTL;
+        icmp_error_generate_v6(ctx, icmp_type, icmp_code, rx_uidb_index);
+        return 1;
+    } else {
+        return 0;
+    }
+}
+
+int icmpv6_generate_with_throttling_v1 (spp_ctx_t *ctx, ipv6_header_t *ipv6,
+                                     u16 rx_uidb_index, u32 type, u32 code)
+{
+
+    if (v6_icmp_msg_gen_allowed()) {
+        icmp_error_generate_v6(ctx, type, code, rx_uidb_index);
+        return 1;
+    } else {
+        return 0;
+    }
+}
+#endif 
+
+void calculate_window_scale(tcp_hdr_type *tcp_header, u8 *scale) {
+    
+    u8 check_options = 0;
+
+    *scale = 0;
+    check_options = ((tcp_header->flags & TCP_FLAG_SYN) &&
+                    (((tcp_header->hdr_len>>4) << 2) > sizeof(tcp_hdr_type)));
+    
+    if (PREDICT_FALSE(check_options)) {
+         u8 *options_ptr = tcp_findoption(tcp_header, TCP_OPTION_WINDOW_SCALE);
+
+	 /*
+          * TCP option field: | kind 1B | len 1B | value 2B|
+          *     where kind != [0, 1]
+          */
+	 if (PREDICT_TRUE(options_ptr && 
+	                 (options_ptr[1] == TCP_OPTION_WINDOW_SCALE))) {
+	     u8 *ptr  = (u8*)(options_ptr + 2);
+	     *scale    = *ptr;
+
+	     if(PREDICT_FALSE(*scale >= 14)) {
+	         *scale = 14;
+	     }
+
+	     return;
+	 }
+    }	 
+}	     
+
+#if 0
+ALWAYS_INLINE(
+void cnat_log_nat44_tcp_seq_mismatch(
+                   cnat_main_db_entry_t *db,
+                   cnat_vrfmap_t *vrfmap))
+{
+     /* As of now, Netflow does not require this to be logged
+      * So only syslog
+      */
+      if(PREDICT_TRUE(db->flags & CNAT_TAC_SEQ_MISMATCH)) {
+              /* Already logged ..*/
+          return;
+      }
+     /* else, set the flag and call the log API */
+
+     db->flags = db->flags | CNAT_TAC_SEQ_MISMATCH;
+				  
+     cnat_syslog_nat44_tcp_seq_mismatch(db, vrfmap);
+}
+	 
+				    
+static int cnat_util_init (void *notused)
+{
+    /* run SPP_API_CNAT_PORTMAP_CREATE first*/
+    spp_msg_api_set_handler(SPP_API_CNAT_PORT_ALLOCATE,
+                            spp_api_cnat_port_allocate_t_handler);
+
+
+    spp_msg_api_set_handler(SPP_API_CNAT_PORT_CLEAR,
+                            spp_api_cnat_port_clear_t_handler);
+
+    /* run vrfmap config first */
+    spp_msg_api_set_handler(SPP_API_CNAT_PORT_CREATE,
+                            spp_api_cnat_port_create_t_handler);
+
+    spp_msg_api_set_handler(SPP_API_CNAT_PORT_DELETE,
+                            spp_api_cnat_port_delete_t_handler);
+    return 0;
+}
+
+void
+print_ipv6_pkt (ipv6_header_t *ip)
+{
+    u32 i, total_len, l4_len=0;
+
+    u8 *pkt = (u8 *) ip;
+
+    total_len = spp_net_to_host_byte_order_16(&ip->payload_length);
+
+    /* we rarely need to debug > 200 bytes of packet */
+    if(total_len > 200) {
+	total_len = 200;
+    }
+
+    printf("\n======== PRINTING PKT START======\n");
+    printf("======== IPv6 PAYLOAD LEN %d ===========\n", total_len);
+    for (i=0; i < 40; i++) {
+       printf(" %02X ", *(pkt + i));
+       if(i%16==15)
+	   printf("\n");
+    }
+    
+    if (ip->next_header == IPV6_PROTO_TCP) {
+	printf("\n======== TCP HEADER =================\n");
+	l4_len = 20;
+    }
+    else if (ip->next_header == IPV6_PROTO_UDP) {
+	printf("\n======== UDP HEADER =================\n");
+	l4_len = 8;
+    }
+    else if (ip->next_header == IPV6_PROTO_ICMPV6) {
+	printf("\n======== ICMP HEADER =================\n");
+	l4_len = 8;
+    }
+
+    for (i=40; i < (l4_len + 40); i++) {
+       printf(" %02X ", *(pkt + i));
+    }
+
+    printf("\n======== LAYER4 PAYLOAD ===================\n");
+    for (i=(l4_len + 40); i < total_len; i++) {
+       printf(" %02X ", *(pkt + i));
+       if(i%16==15)
+	   printf("\n");
+    }
+
+    printf("\n======== PRINTING PKT END =======\n");
+}
+
+
+
+PLATFORM_SPP_INIT_FUNCTION(cnat_util_init);
+#endif