X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=nfvbench%2Ftraffic_gen%2Ftrex.py;h=9cefb1e4b3e7419c0e1e064d5ba21d0965c3d244;hb=d462cb16e8d33fc5c6e79ad05222db799c10d5a5;hp=68ab95acc67ad4181f0d6ec3e543e3eb396219ac;hpb=5cd74e4476272970d328467e37ffa164757300d7;p=nfvbench.git

diff --git a/nfvbench/traffic_gen/trex.py b/nfvbench/traffic_gen/trex.py
index 68ab95a..9cefb1e 100644
--- a/nfvbench/traffic_gen/trex.py
+++ b/nfvbench/traffic_gen/trex.py
@@ -48,6 +48,8 @@ from trex_stl_lib.api import STLVmFlowVarRepetableRandom
 from trex_stl_lib.api import STLVmWrFlowVar
 from trex_stl_lib.api import UDP
 from trex_stl_lib.services.trex_stl_service_arp import STLServiceARP
+
+
 # pylint: enable=import-error
 
 
@@ -64,6 +66,8 @@ class TRex(AbstractTrafficGenerator):
         self.streamblock = defaultdict(list)
         self.rates = []
         self.arps = {}
+        self.capture_id = None
+        self.packet_list = []
 
     def get_version(self):
         return self.client.get_server_version()
@@ -138,15 +142,14 @@ class TRex(AbstractTrafficGenerator):
     def create_pkt(self, stream_cfg, l2frame_size):
 
         pkt_base = Ether(src=stream_cfg['mac_src'], dst=stream_cfg['mac_dst'])
-
         if stream_cfg['vlan_tag'] is not None:
             # 50 = 14 (Ethernet II) + 4 (Vlan tag) + 4 (CRC Checksum) + 20 (IPv4) + 8 (UDP)
             pkt_base /= Dot1Q(vlan=stream_cfg['vlan_tag'])
-            payload = 'x' * (max(64, int(l2frame_size)) - 50)
+            l2payload_size = int(l2frame_size) - 50
         else:
             # 46 = 14 (Ethernet II) + 4 (CRC Checksum) + 20 (IPv4) + 8 (UDP)
-            payload = 'x' * (max(64, int(l2frame_size)) - 46)
-
+            l2payload_size = int(l2frame_size) - 46
+        payload = 'x' * l2payload_size
         udp_args = {}
         if stream_cfg['udp_src_port']:
             udp_args['sport'] = int(stream_cfg['udp_src_port'])
@@ -201,6 +204,8 @@ class TRex(AbstractTrafficGenerator):
         idx_lat = None
         streams = []
         if l2frame == 'IMIX':
+            min_size = 64 if stream_cfg['vlan_tag'] is None else 68
+            self.adjust_imix_min_size(min_size)
             for t, (ratio, l2_frame_size) in enumerate(zip(self.imix_ratios, self.imix_l2_sizes)):
                 pkt = self.create_pkt(stream_cfg, l2_frame_size)
                 streams.append(STLStream(packet=pkt,
@@ -211,6 +216,7 @@ class TRex(AbstractTrafficGenerator):
 
             if latency:
                 idx_lat = self.id.next()
+                pkt = self.create_pkt(stream_cfg, self.imix_avg_l2_size)
                 sl = STLStream(packet=pkt,
                                isg=isg,
                                flow_stats=STLFlowLatencyStats(pg_id=idx_lat),
@@ -453,6 +459,24 @@ class TRex(AbstractTrafficGenerator):
     def stop_traffic(self):
         self.client.stop(ports=self.port_handle)
 
+    def start_capture(self):
+        if self.capture_id:
+            self.stop_capture()
+        self.client.set_service_mode(ports=self.port_handle)
+        self.capture_id = self.client.start_capture(rx_ports=self.port_handle)
+
+    def fetch_capture_packets(self):
+        if self.capture_id:
+            self.packet_list = []
+            self.client.fetch_capture_packets(capture_id=self.capture_id['id'],
+                                              output=self.packet_list)
+
+    def stop_capture(self):
+        if self.capture_id:
+            self.client.stop_capture(capture_id=self.capture_id['id'])
+            self.capture_id = None
+            self.client.set_service_mode(ports=self.port_handle, enabled=False)
+
     def cleanup(self):
         if self.client:
             try: