NFVBENCH-152 Add service_mode method for debugging purpose

[nfvbench.git] / nfvbench / traffic_client.py

diff --git a/nfvbench/traffic_client.py b/nfvbench/traffic_client.py
index 75c40c1..7591062 100755 (executable)
--- a/nfvbench/traffic_client.py
+++ b/nfvbench/traffic_client.py
@@ -23,7 +23,9 @@ from attrdict import AttrDict
 import bitmath
 from netaddr import IPNetwork
 # pylint: disable=import-error
+from trex.stl.api import Ether
 from trex.stl.api import STLError
+from trex.stl.api import UDP
 # pylint: enable=import-error
 
 from log import LOG
@@ -44,12 +46,13 @@ class TrafficClientException(Exception):
 class TrafficRunner(object):
     """Serialize various steps required to run traffic."""
 
-    def __init__(self, client, duration_sec, interval_sec=0):
+    def __init__(self, client, duration_sec, interval_sec=0, service_mode=False):
         """Create a traffic runner."""
         self.client = client
         self.start_time = None
         self.duration_sec = duration_sec
         self.interval_sec = interval_sec
+        self.service_mode = service_mode
 
     def run(self):
         """Clear stats and instruct the traffic generator to start generating traffic."""
@@ -57,6 +60,10 @@ class TrafficRunner(object):
             return None
         LOG.info('Running traffic generator')
         self.client.gen.clear_stats()
+        # Debug use only : new '--service-mode' option available for the NFVBench command line.
+        # A read-only mode TRex console would be able to capture the generated traffic.
+        self.client.gen.set_service_mode(enabled=self.service_mode)
+        LOG.info('Service mode is %sabled', 'en' if self.service_mode else 'dis')
         self.client.gen.start_traffic()
         self.start_time = time.time()
         return self.poll_stats()
@@ -241,6 +248,11 @@ class Device(object):
         self.vnis = vnis
         LOG.info("Port %d: VNIs %s", self.port, self.vnis)
 
+    def set_gw_ip(self, gateway_ip):
+        self.gw_ip_block = IpBlock(gateway_ip,
+                                   self.generator_config.gateway_ip_addrs_step,
+                                   self.chain_count)
+
     def get_gw_ip(self, chain_index):
         """Retrieve the IP address assigned for the gateway of a given chain."""
         return self.gw_ip_block.get_ip(chain_index)
@@ -334,6 +346,8 @@ class GeneratorConfig(object):
         else:
             self.cores = gen_config.get('cores', 1)
         self.mbuf_factor = config.mbuf_factor
+        self.mbuf_64 = config.mbuf_64
+        self.hdrh = not config.disable_hdrh
         if gen_config.intf_speed:
             # interface speed is overriden from config
             self.intf_speed = bitmath.parse_string(gen_config.intf_speed.replace('ps', '')).bits
@@ -348,8 +362,6 @@ class GeneratorConfig(object):
         self.interfaces = gen_config.interfaces
         if self.interfaces[0].port != 0 or self.interfaces[1].port != 1:
             raise TrafficClientException('Invalid port order/id in generator_profile.interfaces')
-        if hasattr(gen_config, 'platform'):
-            self.platform = gen_config.platform
         self.service_chain = config.service_chain
         self.service_chain_count = config.service_chain_count
         self.flow_count = config.flow_count
@@ -479,7 +491,8 @@ class TrafficClient(object):
         self.notifier = notifier
         self.interval_collector = None
         self.iteration_collector = None
-        self.runner = TrafficRunner(self, self.config.duration_sec, self.config.interval_sec)
+        self.runner = TrafficRunner(self, self.config.duration_sec, self.config.interval_sec,
+                                    self.config.service_mode)
         self.config.frame_sizes = self._get_frame_sizes()
         self.run_config = {
             'l2frame_size': None,
@@ -611,11 +624,10 @@ class TrafficClient(object):
             self.gen.stop_traffic()
             self.gen.fetch_capture_packets()
             self.gen.stop_capture()
-
             for packet in self.gen.packet_list:
                 mac_id = get_mac_id(packet)
                 src_mac = ':'.join(["%02x" % ord(x) for x in mac_id])
-                if src_mac in mac_map:
+                if src_mac in mac_map and self.is_udp(packet):
                     port, chain = mac_map[src_mac]
                     LOG.info('Received packet from mac: %s (chain=%d, port=%d)',
                              src_mac, chain, port)
@@ -624,9 +636,18 @@ class TrafficClient(object):
                 if not mac_map:
                     LOG.info('End-to-end connectivity established')
                     return
-
+            if self.config.l3_router and not self.config.no_arp:
+                # In case of L3 traffic mode, routers are not able to route traffic
+                # until VM interfaces are up and ARP requests are done
+                LOG.info('Waiting for loopback service completely started...')
+                LOG.info('Sending ARP request to assure end-to-end connectivity established')
+                self.ensure_arp_successful()
         raise TrafficClientException('End-to-end connectivity cannot be ensured')
 
+    def is_udp(self, packet):
+        pkt = Ether(packet['binary'])
+        return UDP in pkt
+
     def ensure_arp_successful(self):
         """Resolve all IP using ARP and throw an exception in case of failure."""
         dest_macs = self.gen.resolve_arp()
@@ -658,12 +679,7 @@ class TrafficClient(object):
                 self.run_config['rates'][idx] = {'rate_pps': self.__convert_rates(rate)['rate_pps']}
 
         self.gen.clear_streamblock()
-        if not self.config.vxlan:
-            self.gen.create_traffic(frame_size, self.run_config['rates'], bidirectional,
-                                    latency=True)
-        else:
-            self.gen.create_traffic(frame_size, self.run_config['rates'], bidirectional,
-                                    latency=False)
+        self.gen.create_traffic(frame_size, self.run_config['rates'], bidirectional, latency=True)
 
     def _modify_load(self, load):
         self.current_total_rate = {'rate_percent': str(load)}