REST_API: rest api client implementation

JIRA: SAMPLEVNF-78

This patch implements rest api's for VNF clients. This
comprises of
        * vnf api's for common functionality
        * vnf api's for CGNAPT
        * vnf api's for VFW

Change-Id: I56d22c64bf3ee5b0a2e536da8169ac7583499041
Signed-off-by: Vishwesh M Rudramuni <vishwesh.m.rudramuni@intel.com>

6 files changed, 601 insertions, 1 deletions

diff --git a/VNFs/vFW/Makefile b/VNFs/vFW/Makefile
index 1e79646d..b011eca2 100644
--- a/VNFs/vFW/Makefile
+++ b/VNFs/vFW/Makefile
@@ -66,9 +66,15 @@ CFLAGS += -I$(VNF_CORE)/common/VIL/acl
 CFLAGS += -I$(VNF_CORE)/common/VIL/pipeline_arpicmp
 CFLAGS += -I$(VNF_CORE)/common/VIL/gateway
 
+TOP = $(RTE_SDK)/../civetweb
+CFLAGS += -I$(TOP)/include $(COPT) -DUSE_WEBSOCKET -DUSE_IPV6 -DUSE_SSL_DH=1 -DREST_API_SUPPORT=1
+LDFLAGS +=  -ljson -lcrypto -lssl
+LDFLAGS += -L$(RTE_SDK)/../civetweb/ -lcivetweb
+
 # all source are stored in SRCS-y
 SRCS-$(CONFIG_RTE_LIBRTE_PIPELINE) := main.c
 SRCS-$(CONFIG_RTE_LIBRTE_PIPELINE) += config_parse.c
+SRCS-$(CONFIG_RTE_LIBRTE_PIPELINE) += rest_api.c
 SRCS-$(CONFIG_RTE_LIBRTE_PIPELINE) += config_parse_tm.c
 SRCS-$(CONFIG_RTE_LIBRTE_PIPELINE) += config_check.c
 SRCS-$(CONFIG_RTE_LIBRTE_PIPELINE) += init.c
diff --git a/VNFs/vFW/init.c b/VNFs/vFW/init.c
index 4e98b335..0edc5e32 100644
--- a/VNFs/vFW/init.c
+++ b/VNFs/vFW/init.c
@@ -705,7 +705,7 @@ app_init_link(struct app_params *app)
 	port_config = rte_zmalloc(NULL, (app->n_links * size),
 			RTE_CACHE_LINE_SIZE);
 	if (port_config == NULL)
-		rte_panic("port_config is NULL: Memory Allocation failure\n");
+		rte_panic("port_config is NULL: Memory Allocation failure num_links %d %d\n", app->n_links, app->n_links * size);
 
 	for (i = 0; i < app->n_links; i++) {
 		struct app_link_params *p_link = &app->link_params[i];
diff --git a/VNFs/vFW/main.c b/VNFs/vFW/main.c
index 9ebf6fc3..aec04ac5 100644
--- a/VNFs/vFW/main.c
+++ b/VNFs/vFW/main.c
@@ -15,12 +15,15 @@
 */
 
 #include "app.h"
+#include <civetweb.h>
 
 static struct app_params app;
+extern void rest_api_vfw_init(struct mg_context *ctx, struct app_params *app);
 
 int
 main(int argc, char **argv)
 {
+	struct mg_context *ctx = NULL;
 	rte_openlog_stream(stderr);
 
 	/* Config */
@@ -28,6 +31,12 @@ main(int argc, char **argv)
 
 	app_config_args(&app, argc, argv);
 
+	if (is_rest_support()) {
+		/* initialize the rest api */
+		set_vnf_type("VFW");
+		ctx = rest_api_init(&app);
+	}
+
 	app_config_preproc(&app);
 
 	app_config_parse(&app, app.parser_file);
@@ -40,11 +49,21 @@ main(int argc, char **argv)
 	/* Init */
 	app_init(&app);
 
+	if (is_rest_support() && (ctx != NULL)) {
+		/* rest api's for cgnapt */
+		rest_api_vfw_init(ctx, &app);
+	}
+
 	/* Run-time */
 	rte_eal_mp_remote_launch(
 		app_thread,
 		(void *) &app,
 		CALL_MASTER);
 
+	if (is_rest_support() && (ctx != NULL)) {
+		mg_stop(ctx);
+		printf("Civet server stopped.\n");
+	}
+
 	return 0;
 }
diff --git a/VNFs/vFW/pipeline/pipeline_vfw.c b/VNFs/vFW/pipeline/pipeline_vfw.c
index f235bc59..df94b5f7 100644
--- a/VNFs/vFW/pipeline/pipeline_vfw.c
+++ b/VNFs/vFW/pipeline/pipeline_vfw.c
@@ -29,6 +29,7 @@
 #include <string.h>
 #include <sys/queue.h>
 #include <netinet/in.h>
+#include <arpa/inet.h>
 
 #include <rte_common.h>
 #include <rte_hexdump.h>
@@ -45,10 +46,16 @@
 
 #include "app.h"
 #include "pipeline_common_fe.h"
+#include "pipeline_master.h"
 #include "pipeline_vfw.h"
 #include "pipeline_vfw_be.h"
 #include "rte_cnxn_tracking.h"
 
+struct app_params *myapp;
+#define MAX_BUF_SIZE    2048
+extern struct cmdline *pipe_cl;
+extern int my_inet_pton_ipv6(int af, const char *src, void *dst);
+
 /**
  * A structure defining the VFW rule for the TAILQ Tables.
  */
@@ -4619,6 +4626,477 @@ cmdline_parse_token_num_t cmd_vfw_synproxy_flag =
 TOKEN_NUM_INITIALIZER(struct cmd_vfw_synproxy_flag_result, synproxy_flag,
               UINT8);
 
+static uint32_t rules_loaded;
+static int vfw_field_found(const char *key,
+            const char *filename,
+            char *path,
+            size_t pathlen,
+            void *user_data);
+
+static int vfw_field_get(const char *key, const char *value, size_t valuelen,
+ void *user_data);
+static int vfw_field_stored(const char *path, long long file_size, void *user_data);
+
+int vfw_clearrules_handler(struct mg_connection *conn, __rte_unused void *cbdata)
+{
+       struct app_params *app = myapp;
+       int status;
+       mg_printf(conn,
+                 "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nConnection: "
+                 "close\r\n\r\n");
+       mg_printf(conn, "<html><body>");
+       mg_printf(conn, "</body></html>\n");
+
+       status = app_pipeline_vfw_clearrules(app);
+
+       if (status != 0) {
+              mg_printf(conn, "Command failed\n");
+              return 1;
+       }
+
+       mg_printf(conn, "Command Success\n");
+       return 1;
+}
+
+int vfw_clearstats_handler(__rte_unused struct mg_connection *conn,
+		 __rte_unused void *cbdata)
+{
+       int i;
+       struct rte_CT_counter_block *ct_counters;
+
+       for (i = 0; i <= rte_VFW_hi_counter_block_in_use; i++) {
+              ct_counters = rte_vfw_counter_table[i].ct_counters;
+              rte_vfw_counter_table[i].bytes_processed = 0;
+              rte_vfw_counter_table[i].pkts_drop_without_rule = 0;
+              rte_vfw_counter_table[i].pkts_received = 0;
+              rte_vfw_counter_table[i].pkts_drop_ttl = 0;
+              rte_vfw_counter_table[i].pkts_drop_bad_size = 0;
+              rte_vfw_counter_table[i].pkts_drop_fragmented = 0;
+              rte_vfw_counter_table[i].pkts_drop_unsupported_type = 0;
+              rte_vfw_counter_table[i].pkts_drop_without_arp_entry = 0;
+              rte_vfw_counter_table[i].internal_time_sum = 0;
+              rte_vfw_counter_table[i].external_time_sum = 0;
+              rte_vfw_counter_table[i].time_measurements = 0;
+              rte_vfw_counter_table[i].ct_counters->pkts_forwarded = 0;
+              rte_vfw_counter_table[i].ct_counters->pkts_drop = 0;
+              rte_vfw_counter_table[i].pkts_fw_forwarded = 0;
+              rte_vfw_counter_table[i].pkts_acl_forwarded = 0;
+              ct_counters->current_active_sessions = 0;
+              ct_counters->sessions_activated = 0;
+              ct_counters->sessions_reactivated = 0;
+              ct_counters->sessions_established = 0;
+              ct_counters->sessions_closed = 0;
+              ct_counters->sessions_timedout = 0;
+              ct_counters->pkts_drop_invalid_conn = 0;
+              ct_counters->pkts_drop_invalid_state = 0;
+              ct_counters->pkts_drop_invalid_rst = 0;
+              ct_counters->pkts_drop_outof_window = 0;
+       }
+
+       memset(&action_counter_table, 0, sizeof(action_counter_table));
+       rte_vfw_reset_running_averages();
+       return 1;
+}
+
+int vfw_stats_handler(struct mg_connection *conn, __rte_unused void *cbdata)
+{
+       const struct mg_request_info *ri = mg_get_request_info(conn);
+       int i, j;
+       struct rte_VFW_counter_block vfw_counter_sums;
+       struct rte_CT_counter_block ct_counter_sums;
+       struct rte_CT_counter_block *ct_counters;
+       struct action_counter_block action_counter_sum[action_array_max];
+       uint64_t sum_pkts_drop_fw = 0;
+       
+       if (!strcmp(ri->request_method, "POST")) {
+               mg_printf(conn,
+                       "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nConnection: "
+                       "close\r\n\r\n");
+               mg_printf(conn, "<html><body>");
+               mg_printf(conn, "Command Passed \n");
+               vfw_clearstats_handler(conn, cbdata);
+               mg_printf(conn, "</body></html>\n");
+               return 1;
+       }
+
+       if (strcmp(ri->request_method, "GET")) {
+               mg_printf(conn,
+                         "HTTP/1.1 405 Method Not Allowed\r\nConnection: close\r\n");
+               mg_printf(conn, "Content-Type: text/plain\r\n\r\n");
+               mg_printf(conn,
+                         "%s method not allowed in the GET handler\n",
+                         ri->request_method);
+               return 1;
+       }
+
+       memset(&vfw_counter_sums, 0, sizeof(vfw_counter_sums));
+       memset(&ct_counter_sums, 0, sizeof(ct_counter_sums));
+
+       mg_printf(conn,
+                "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nConnection: "
+                "close\r\n\r\n");
+       mg_printf(conn, "<html><body>");
+       mg_printf(conn, "VFW Stats\n");
+       for (i = 0; i <= rte_VFW_hi_counter_block_in_use; i++) {
+              struct rte_VFW_counter_block *vfw_ctrs =
+                  &rte_vfw_counter_table[i];
+              ct_counters = rte_vfw_counter_table[i].ct_counters;
+
+              uint64_t average_internal_time =
+                  vfw_ctrs->time_measurements ==
+                  0 ? 0 : vfw_ctrs->internal_time_sum /
+                  vfw_ctrs->time_measurements;
+              uint64_t average_external_time =
+                  vfw_ctrs->time_measurements ==
+                  0 ? 0 : vfw_ctrs->external_time_sum /
+                  vfw_ctrs->time_measurements;
+              uint64_t average_pkts_in_batch =
+                  vfw_ctrs->num_pkts_measurements ==
+                  0 ? 0 : vfw_ctrs->num_batch_pkts_sum /
+                  vfw_ctrs->num_pkts_measurements;
+              uint64_t pkts_drop_fw = vfw_ctrs->pkts_drop_ttl +
+                                   vfw_ctrs->pkts_drop_bad_size +
+                                   vfw_ctrs->pkts_drop_fragmented +
+                                   vfw_ctrs->pkts_drop_unsupported_type;
+
+              mg_printf(conn, "{\"VFW_counters\" : {\"id\" : \"%s\", \" pkts_received\": %"
+                     PRIu64 ", \" pkts_fw_forwarded\": %"
+                     PRIu64 ", \" pkts_drop_fw\": %"
+                     PRIu64 ", \" pkts_acl_forwarded\": %"
+                     PRIu64 ", \"pkts_drop_without_rule\" : %"
+                     PRIu64 ", \"average_pkts_in_batch\" : %"
+                     PRIu64 ", \"average_internal_time_in_clocks\" : %"
+                     PRIu64 ", \"average_external_time_in_clocks\" : %"
+                     PRIu64 ", \"total_time_measures\" : %"
+                     PRIu32 ", \"ct_packets_forwarded\" : %"
+                     PRIu64 ", \"ct_packets_dropped\" : %"
+                     PRIu64 ", \"bytes_processed \": %"
+                     PRIu64 ", \"ct_sessions\" : {"
+                     "\"active\" : %" PRIu64 ", \"open_attempt\" : %"
+                     PRIu64 ", \"re-open_attempt\" : %"
+                     PRIu64 ", \"established\" : %"
+                     PRIu64 ", \"closed\" : %"
+                     PRIu64 ", \"timeout\" : %"
+                     PRIu64 "}, \"ct_drops\" : {"
+                     "\"out_of_window\" : %" PRIu64 ", \"invalid_conn\" : %"
+                     PRIu64 ", \"invalid_state_transition\" : %"
+                     PRIu64 " \"RST\" : %"
+                     PRIu64 "}}\n",
+                     vfw_ctrs->name,
+                     vfw_ctrs->pkts_received,
+                     vfw_ctrs->pkts_fw_forwarded,
+                     pkts_drop_fw,
+                     vfw_ctrs->pkts_acl_forwarded,
+                     vfw_ctrs->pkts_drop_without_rule,
+                     average_pkts_in_batch,
+                     average_internal_time,
+                     average_external_time,
+                     vfw_ctrs->time_measurements,
+                     ct_counters->pkts_forwarded,
+                     ct_counters->pkts_drop,
+                     vfw_ctrs->bytes_processed,
+                     ct_counters->current_active_sessions,
+                     ct_counters->sessions_activated,
+                     ct_counters->sessions_reactivated,
+                     ct_counters->sessions_established,
+                     ct_counters->sessions_closed,
+                     ct_counters->sessions_timedout,
+                     ct_counters->pkts_drop_outof_window,
+                     ct_counters->pkts_drop_invalid_conn,
+                     ct_counters->pkts_drop_invalid_state,
+                     ct_counters->pkts_drop_invalid_rst);
+
+              vfw_counter_sums.bytes_processed +=
+                  vfw_ctrs->bytes_processed;
+
+              vfw_counter_sums.internal_time_sum +=
+                  vfw_ctrs->internal_time_sum;
+              vfw_counter_sums.external_time_sum +=
+                  vfw_ctrs->external_time_sum;
+              vfw_counter_sums.time_measurements +=
+                  vfw_ctrs->time_measurements;
+
+              vfw_counter_sums.pkts_drop_ttl += vfw_ctrs->pkts_drop_ttl;
+              vfw_counter_sums.pkts_drop_bad_size +=
+                  vfw_ctrs->pkts_drop_bad_size;
+              vfw_counter_sums.pkts_drop_fragmented +=
+                  vfw_ctrs->pkts_drop_fragmented;
+              vfw_counter_sums.pkts_drop_unsupported_type +=
+                  vfw_ctrs->pkts_drop_unsupported_type;
+              vfw_counter_sums.pkts_drop_without_arp_entry +=
+                  vfw_ctrs->pkts_drop_without_arp_entry;
+
+              vfw_counter_sums.pkts_drop_without_rule +=
+                  vfw_ctrs->pkts_drop_without_rule;
+              vfw_counter_sums.pkts_received += vfw_ctrs->pkts_received;
+              vfw_counter_sums.pkts_fw_forwarded +=
+                     vfw_ctrs->pkts_fw_forwarded;
+              vfw_counter_sums.pkts_acl_forwarded +=
+                     vfw_ctrs->pkts_acl_forwarded;
+              sum_pkts_drop_fw += pkts_drop_fw;
+              ct_counter_sums.pkts_forwarded += ct_counters->pkts_forwarded;
+              ct_counter_sums.pkts_drop += ct_counters->pkts_drop;
+              ct_counter_sums.current_active_sessions +=
+                  ct_counters->current_active_sessions;
+              ct_counter_sums.sessions_activated +=
+                  ct_counters->sessions_activated;
+              ct_counter_sums.sessions_reactivated +=
+                  ct_counters->sessions_reactivated;
+              ct_counter_sums.sessions_established +=
+                  ct_counters->sessions_established;
+              ct_counter_sums.sessions_closed += ct_counters->sessions_closed;
+              ct_counter_sums.sessions_timedout +=
+                  ct_counters->sessions_timedout;
+              ct_counter_sums.pkts_drop_invalid_conn +=
+                  ct_counters->pkts_drop_invalid_conn;
+              ct_counter_sums.pkts_drop_invalid_state +=
+                  ct_counters->pkts_drop_invalid_state;
+              ct_counter_sums.pkts_drop_invalid_rst +=
+                  ct_counters->pkts_drop_invalid_rst;
+              ct_counter_sums.pkts_drop_outof_window +=
+                  ct_counters->pkts_drop_outof_window;
+
+       }
+
+       mg_printf(conn, "VFW TOTAL: pkts_received: %"
+                     PRIu64 ", \"pkts_fw_forwarded\": %"
+                     PRIu64 ", \"pkts_drop_fw\": %"
+                     PRIu64 ", \"fw_drops\" : {"
+                     "\"TTL_zero\" : %" PRIu64 ", \"bad_size\" : %"
+                     PRIu64 ", \"fragmented_packet\" : %"
+                     PRIu64 ", \"unsupported_packet_types\" : %"
+                     PRIu64 ", \"no_arp_entry\" : %"
+                     PRIu64 "}, \"pkts_acl_forwarded\": %"
+                     PRIu64 ", \"pkts_drop_without_rule\": %"
+                     PRIu64 ", \"packets_last_sec\" : %"
+                     PRIu32 ", \"average_packets_per_sec\" : %"
+                     PRIu32 ", \"bytes_last_sec\" : %"
+                     PRIu32 ", \"average_bytes_per_sec\" : %"
+                     PRIu32 ", \"bytes_processed \": %"
+                     PRIu64 "\n",
+                     vfw_counter_sums.pkts_received,
+                     vfw_counter_sums.pkts_fw_forwarded,
+                     sum_pkts_drop_fw,
+                     vfw_counter_sums.pkts_drop_ttl,
+                     vfw_counter_sums.pkts_drop_bad_size,
+                     vfw_counter_sums.pkts_drop_fragmented,
+                     vfw_counter_sums.pkts_drop_unsupported_type,
+                     vfw_counter_sums.pkts_drop_without_arp_entry,
+                     vfw_counter_sums.pkts_acl_forwarded,
+                     vfw_counter_sums.pkts_drop_without_rule,
+                     rte_vfw_performance_measures.pkts_last_second,
+                     rte_vfw_performance_measures.ave_pkts_per_second,
+                     rte_vfw_performance_measures.bytes_last_second,
+                     rte_vfw_performance_measures.ave_bytes_per_second,
+                     vfw_counter_sums.bytes_processed);
+
+       mg_printf(conn, "\"CT TOTAL: ct_packets_forwarded\" : %"
+                     PRIu64 ", \" ct_packets_dropped\" : %"
+                     PRIu64 ", \"ct_sessions\" : {"
+                     "\"active\" : %" PRIu64 ", \"open_attempt\" : %"
+                     PRIu64 ", \"re-open_attempt\" : %"
+                     PRIu64 ", \"established\" : %"
+                     PRIu64 ", \"closed\" : %"
+                     PRIu64 ", \"timeout\" : %"
+                     PRIu64 "}, \"ct_drops\" : {"
+                     "\"out_of_window\" : %" PRIu64 ", \"invalid_conn\" : %"
+                     PRIu64 ", \"invalid_state_transition\" : %"
+                     PRIu64 " \"RST\" : %"
+                     PRIu64 "}\n",
+                     ct_counter_sums.pkts_forwarded,
+                     ct_counter_sums.pkts_drop,
+                     ct_counter_sums.current_active_sessions,
+                     ct_counter_sums.sessions_activated,
+                     ct_counter_sums.sessions_reactivated,
+                     ct_counter_sums.sessions_established,
+                     ct_counter_sums.sessions_closed,
+                     ct_counter_sums.sessions_timedout,
+                     ct_counter_sums.pkts_drop_outof_window,
+                     ct_counter_sums.pkts_drop_invalid_conn,
+                     ct_counter_sums.pkts_drop_invalid_state,
+                     ct_counter_sums.pkts_drop_invalid_rst);
+
+       for (i = 0; i <= rte_VFW_hi_counter_block_in_use; i++) {
+              for (j = 0; j < action_array_max; j++) {
+                     if (action_array_active[j].
+                         action_bitmap & lib_acl_action_count) {
+                            action_counter_sum[j].packetCount +=
+                                action_counter_table[i][j].packetCount;
+                            action_counter_sum[j].byteCount +=
+                                action_counter_table[i][j].byteCount;
+                     }
+              }
+       }
+
+       for (j = 0; j < action_array_max; j++) {
+              if (action_array_active[j].action_bitmap & lib_acl_action_count)
+                     mg_printf(conn, "Action ID: %02u, packetCount: %" PRIu64
+                            ", byteCount: %" PRIu64 "\n", j,
+                            action_counter_sum[j].packetCount,
+                            action_counter_sum[j].byteCount);
+       }
+       mg_printf(conn, "</body></html>");
+
+       return 1;
+
+}
+
+int vfw_rules_handler(struct mg_connection *conn, __rte_unused void *cbdata)
+{
+ 
+        const struct mg_request_info *req_info = mg_get_request_info(conn);
+	if (strcmp(req_info->request_method, "GET")) {
+        	mg_printf(conn, "Only GET method allowed");
+		return 1;
+	}
+
+        mg_printf(conn,
+                 "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nConnection: "
+                 "close\r\n\r\n");
+        mg_printf(conn, "<html><body>");
+        mg_printf(conn, "<h2> These are the methods that are supported </h2>");
+        mg_printf(conn, "<h3>     /load  </h3>");
+        mg_printf(conn, "<h3>     /clear </h3>");
+        mg_printf(conn, "<html><body>");
+	
+        mg_printf(conn, "</body></html>\n");
+
+	return 1;
+}
+
+static int vfw_field_found(const char *key,
+            const char *filename,
+            char *path,
+            size_t pathlen,
+            void *user_data)
+{
+        struct mg_connection *conn = (struct mg_connection *)user_data;
+
+        mg_printf(conn, "\r\n\r\n%s:\r\n", key);
+	mg_printf(conn, "Inside vfw_field_found %s \n", filename);
+
+        if (filename && *filename) {
+		snprintf(path, pathlen, "/tmp/%s", filename);
+		int fd;
+
+		mg_printf(conn, "path: %s\n", path);
+
+		/* Make sure the file exists before clearing rules and actions */
+		fd = open(path, O_RDONLY);
+		if (fd < 0) {
+			mg_printf(conn, "Cannot open file \"%s\"\n", filename);
+			return FORM_FIELD_STORAGE_GET;
+		}
+		close(fd);
+
+		return FORM_FIELD_STORAGE_STORE;
+	}
+        
+	return FORM_FIELD_STORAGE_GET;
+}
+
+static int vfw_field_get(const char *key, const char *value, size_t valuelen,
+	 void *user_data)
+{
+        struct mg_connection *conn = (struct mg_connection *)user_data;
+
+        if (key[0]) {
+                mg_printf(conn, "%s = ", key);
+        }
+        mg_write(conn, value, valuelen);
+
+        return 0;
+}
+
+static int vfw_field_stored(const char *path, long long file_size,
+	 void *user_data)
+{
+        struct mg_connection *conn = (struct mg_connection *)user_data;
+	int status;
+
+        mg_printf(conn,
+                  "stored as %s (%lu bytes)\r\n\r\n",
+                  path,
+                  (unsigned long)file_size);
+
+	/* Clear all rules and actions */
+	status = app_pipeline_vfw_clearrules(myapp);
+	if (status != 0) {
+		mg_printf(conn, "Command clearrules failed\n");
+		return 1;
+	}
+
+	/* Process commands in script file */
+	app_loadrules_file(pipe_cl->ctx, path);
+	rules_loaded = 1;
+
+        return 0;
+}
+
+int vfw_cmd_ver_handler(__rte_unused struct mg_connection *conn, __rte_unused void *cbdata)
+{
+        mg_printf(conn,
+                  "HTTP/1.1 200 OK\r\nContent-Type: "
+                  "text/plain\r\nConnection: close\r\n\r\n");
+        mg_printf(conn, "<html><body>");
+	mg_printf(conn, "<p>Command Passed</p>");
+        mg_printf(conn, "</body></html>\n");
+
+	return 1;
+}
+
+int vfw_load_rules_handler(struct mg_connection *conn, __rte_unused void *cbdata)
+{
+        /* Handler may access the request info using mg_get_request_info */
+	int ret;
+        const struct mg_request_info *req_info = mg_get_request_info(conn);
+        struct mg_form_data_handler fdh = {vfw_field_found, vfw_field_get,
+						 vfw_field_stored, 0};
+
+        /* It would be possible to check the request info here before calling
+         * mg_handle_form_request. */
+        (void)req_info;
+
+        mg_printf(conn,
+                  "HTTP/1.1 200 OK\r\nContent-Type: "
+                  "text/plain\r\nConnection: close\r\n\r\n");
+
+        if (!strcmp(req_info->request_method, "GET")) {
+		mg_printf(conn, "Rule file is %s\n", rules_loaded? "LOADED":"NOT LOADED");
+	}
+
+        if (strcmp(req_info->request_method, "PUT")) {
+        	mg_printf(conn, "Only PUT method allowed");
+		return 1;
+	}
+
+        fdh.user_data = (void *)conn;
+
+        /* Call the form handler */
+        mg_printf(conn, "Form data:");
+        ret = mg_handle_form_request(conn, &fdh);
+        mg_printf(conn, "\r\n%i fields found", ret);
+
+        //mg_handle_form_request(conn, &fdh);
+        //mg_printf(conn, "\r\n script file handled");
+	//rules_loaded = 1;
+
+        return 1;
+}
+
+void rest_api_vfw_init(struct mg_context *ctx, struct app_params *app)
+{
+	myapp = app;
+
+	/* vFW commands */
+	mg_set_request_handler(ctx, "/vnf/config/rules", vfw_rules_handler, 0);
+	mg_set_request_handler(ctx, "/vnf/config/rules/load", vfw_load_rules_handler, 0);
+	mg_set_request_handler(ctx, "/vnf/config/rules/clear", vfw_clearrules_handler, 0);
+	mg_set_request_handler(ctx, "/vnf/stats", vfw_stats_handler, 0);
+	mg_set_request_handler(ctx, "/vnf/status", vfw_cmd_ver_handler, 0);
+
+}
+
 cmdline_parse_inst_t cmd_vfw_synproxy = {
        .f = cmd_vfw_synproxy_flag_parsed,
        .data = NULL,
diff --git a/VNFs/vFW/pipeline/pipeline_vfw.h b/VNFs/vFW/pipeline/pipeline_vfw.h
index 3b1b25f0..96e7ad33 100644
--- a/VNFs/vFW/pipeline/pipeline_vfw.h
+++ b/VNFs/vFW/pipeline/pipeline_vfw.h
@@ -30,6 +30,9 @@
 #include "app.h"
 #include "pipeline_vfw_be.h"
 
+#include <civetweb.h>
+#include <json/json.h>
+
 /* VFW IPV4 and IPV6 enable flags for debugging (Default both on) */
 extern int vfw_ipv4_enabled;
 extern int vfw_ipv6_enabled;
@@ -142,4 +145,16 @@ app_pipeline_action_delete(struct app_params *app,
 
 extern struct pipeline_type pipeline_vfw;
 
+#ifdef REST_API_SUPPORT
+/* REST Api's defined here */
+int vfw_rules_handler(struct mg_connection *conn, void *cbdata);
+int vfw_load_rules_handler(struct mg_connection *conn, void *cbdata);
+int vfw_clearrules_handler(struct mg_connection *conn, void *cbdata);
+int vfw_stats_handler(struct mg_connection *conn, void *cbdata);
+int vfw_clearstats_handler(__rte_unused struct mg_connection *conn,
+	 __rte_unused void *cbdata);
+int vfw_cmd_ver_handler(struct mg_connection *conn, __rte_unused void *cbdata);
+void rest_api_vfw_init(struct mg_context *ctx, struct app_params *app);
+#endif
+
 #endif
diff --git a/VNFs/vFW/vnf_template.txt b/VNFs/vFW/vnf_template.txt
new file mode 100644
index 00000000..ed8253be
--- /dev/null
+++ b/VNFs/vFW/vnf_template.txt
@@ -0,0 +1,82 @@
+[MASTER]
+type = MASTER
+core = 0
+
+[ARPICMP]
+type = ARPICMP
+core = 1
+pktq_in  = SWQ0
+pktq_out = TXQ0.0 TXQ1.0
+pktq_in_prv =  RXQ0.0
+prv_to_pub_map = (0,1)
+prv_que_handler = (0)
+
+[TIMER]
+type = TIMER
+core = 2
+n_flows = 1048576
+
+[TXRX-BEGIN]
+type = TXRX
+core = 2
+pktq_in  = RXQ0.0 RXQ1.0
+pktq_out = SWQ0 SWQ1 SWQ2
+pipeline_txrx_type = RXRX
+dest_if_offset=176
+
+[TXRX-END]
+type = TXRX
+core = 5
+pktq_in  = SWQ5 SWQ6
+pktq_out = TXQ0.1 TXQ1.1
+pipeline_txrx_type = TXTX
+
+[LOADB]
+type = LOADB
+core = 3
+pktq_in  = SWQ0 SWQ1
+pktq_out = SWQ3 SWQ4
+outport_offset = 136
+phyport_offset = 204
+n_vnf_threads = 1
+prv_que_handler = (0)
+
+[VACL]
+type = ACL
+core = 4
+pktq_in  = SWQ3 SWQ4
+pktq_out = SWQ5 SWQ6
+n_flows = 1000000
+pkt_type = ipv6
+traffic_type = 6
+
+[VCGNAPT]
+type = CGNAPT
+core = 3
+pktq_in = RXQ0.0 RXQ1.0
+pktq_out = TXQ0.1 TXQ1.1 SWQ0
+phyport_offset = 204
+n_flows = 1048576
+key_offset = 192;64
+key_size = 8
+hash_offset = 200;72
+timer_period = 100
+max_clients_per_ip = 65535
+max_port_per_client = 10
+public_ip_port_range = 98103214:(1, 65535)
+vnf_set = (3,4,5)
+pkt_type = ipv4
+cgnapt_meta_offset = 128
+prv_que_handler = (0,)
+
+[VFW]
+type = VFW
+core = s0c4
+pktq_in  = SWQ3 SWQ4
+pktq_out = SWQ7 SWQ8;TXQ0.0 TXQ1.0
+n_rules = 10000
+n_flows = 1000000
+pkt_type = ipv6
+traffic_type = 6
+tcp_time_wait = 10
+