X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=test%2Fvpp_pg_interface.py;h=32c0eaef40186773a9de31ff0a3a9d8ba026823d;hb=61717cc38;hp=b347f9d50960a80aa3dd69c1548cf90ecbc79382;hpb=4ecbf105a4290de9917b1ded14b0854c68cbd655;p=vpp.git

diff --git a/test/vpp_pg_interface.py b/test/vpp_pg_interface.py
index b347f9d5096..32c0eaef401 100755
--- a/test/vpp_pg_interface.py
+++ b/test/vpp_pg_interface.py
@@ -1,7 +1,8 @@
 import os
-import time
 import socket
+from socket import inet_pton, inet_ntop
 import struct
+import time
 from traceback import format_exc, format_stack
 
 import scapy.compat
@@ -15,7 +16,6 @@ from scapy.layers.inet6 import IPv6, ICMPv6ND_NS, ICMPv6ND_NA,\
     IPv6ExtHdrHopByHop
 from util import ppp, ppc
 from scapy.utils6 import in6_getnsma, in6_getnsmac, in6_ismaddr
-from scapy.utils import inet_pton, inet_ntop
 
 
 class CaptureTimeoutError(Exception):
@@ -295,6 +295,20 @@ class VppPGInterface(VppInterface):
                 raise AssertionError("Capture file present for interface %s" %
                                      self.name)
 
+    def wait_for_pg_stop(self):
+        # wait till packet-generator is stopped
+        # "show packet-generator" while it is still running gives this:
+        # Name               Enabled        Count     Parameters
+        # pcap0-sw_if_inde     Yes           64       limit 64, ...
+        #
+        # also have a 5-minute timeout just in case things go terribly wrong...
+        deadline = time.time() + 300
+        while self.test.vapi.cli('show packet-generator').find("Yes") != -1:
+            self._test.sleep(0.01)  # yield
+            if time.time() > deadline:
+                self.test.logger.debug("Timeout waiting for pg to stop")
+                break
+
     def wait_for_capture_file(self, timeout=1):
         """
         Wait until pcap capture file appears
@@ -303,6 +317,7 @@ class VppPGInterface(VppInterface):
 
         :returns: True/False if the file is present or appears within timeout
         """
+        self.wait_for_pg_stop()
         deadline = time.time() + timeout
         if not os.path.isfile(self.out_path):
             self.test.logger.debug("Waiting for capture file %s to appear, "