[dts] [PATCH V1] Use tcpdump_sniff_packets instead of sniff method

[lihong <lihongx.ma@intel.com>]

About the test case test_vxlan_ipv6_checksum_offload,the sniff
method may not work well when add filter arguments, so use
tcpdump_sniff_packets instead of it.

Signed-off-by: lihong <lihongx.ma@intel.com>
---
 tests/TestSuite_vxlan.py | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/tests/TestSuite_vxlan.py b/tests/TestSuite_vxlan.py
index d5a9d77..8de8384 100644
--- a/tests/TestSuite_vxlan.py
+++ b/tests/TestSuite_vxlan.py
@@ -447,16 +447,14 @@ class TestVxlan(TestCase, IxiaPacketGenerator):
         config.create_pcap()
 
         # remove tempory files
+        config.capture_file = "/tmp/sniff_%s.pcap" % self.recv_iface
         self.tester.send_expect("rm -rf %s" % config.capture_file, "# ")
         # save the capture packet into pcap format
         self.tester.scapy_background()
-        self.tester.scapy_append(
-            'p=sniff(iface="%s",filter="ether[12:2]!=0x88cc",count=1,timeout=5)' % self.recv_iface)
-        self.tester.scapy_append(
-            'wrpcap(\"%s\", p)' % config.capture_file)
-        self.tester.scapy_foreground()
 
+        inst = self.tester.tcpdump_sniff_packets(self.recv_iface, timeout=5)
         config.send_pcap(self.tester_iface)
+        self.tester.load_tcpdump_sniff_packets(inst)
         time.sleep(5)
 
         # extract the checksum offload from saved pcap file
-- 
2.7.4