[dts] [PATCH V2] filter lldp when sniff packet on tester

Xu, HuilongX huilongx.xu at intel.com
Tue Feb 28 02:39:45 CET 2017


Hi yong,
If we use sniff_packets for capture packet , we must update test case, because tcpdump capture packet style different sniff by scapy. I think we only add filter rule in checksum offload case for fileter lldp packet.
Thanks  a lot

> -----Original Message-----
> From: Liu, Yong
> Sent: Thursday, February 23, 2017 3:07 PM
> To: Xu, HuilongX; dts at dpdk.org
> Cc: Xu, HuilongX
> Subject: RE: [dts] [PATCH V2] filter lldp when sniff packet on tester
> 
> Huilong,
> Please try sniff_packets in packet module. LLDP filter has been implemented
> in this function.
> 
> Thanks,
> Marvin
> 
> > -----Original Message-----
> > From: dts [mailto:dts-bounces at dpdk.org] On Behalf Of xu,huilong
> > Sent: Thursday, February 23, 2017 10:41 AM
> > To: dts at dpdk.org
> > Cc: Xu, HuilongX <huilongx.xu at intel.com>
> > Subject: [dts] [PATCH V2] filter lldp when sniff packet on tester
> >
> > in new dpdk.org code, fortville nic will auto send lldp packet when
> > the nic setup so should filter lldp packet when sniff packet on tester
> >
> > Signed-off-by: xu,huilong <huilongx.xu at intel.com>
> > ---
> >  tests/TestSuite_checksum_offload.py | 2 +-
> >  tests/TestSuite_nvgre.py            | 2 +-
> >  tests/TestSuite_vxlan.py            | 2 +-
> >  3 files changed, 3 insertions(+), 3 deletions(-)
> >
> > diff --git a/tests/TestSuite_checksum_offload.py
> > b/tests/TestSuite_checksum_offload.py
> > index 7989c14..1f01d47 100644
> > --- a/tests/TestSuite_checksum_offload.py
> > +++ b/tests/TestSuite_checksum_offload.py
> > @@ -105,7 +105,7 @@ class TestChecksumOffload(TestCase):
> >          self.tester.send_expect("exit()", "#")
> >
> >          self.tester.scapy_background()
> > -        self.tester.scapy_append('p = sniff(filter="ether src %s",
> > iface="%s", count=%d)' % (sniff_src, rx_interface, len(packets_sent)))
> > +        self.tester.scapy_append('p = sniff(filter="ether[12] != 0x88
> > + or
> > ether[13] != 0xcc", iface="%s", count=%d)' % (rx_interface,
> > len(packets_sent)))
> >          self.tester.scapy_append('nr_packets=len(p)')
> >          self.tester.scapy_append('reslist =
> >
> [p[i].sprintf("%IP.chksum%;%TCP.chksum%;%UDP.chksum%;%SCTP.chksum
> %")
> > for i in range(nr_packets)]')
> >          self.tester.scapy_append('import string') diff --git
> > a/tests/TestSuite_nvgre.py b/tests/TestSuite_nvgre.py index
> > 015aa9f..f6161e0 100644
> > --- a/tests/TestSuite_nvgre.py
> > +++ b/tests/TestSuite_nvgre.py
> > @@ -575,7 +575,7 @@ class TestNvgre(TestCase):
> >          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",count=1,timeout=5)' %
> > self.tester_rx_iface)
> > +        self.tester.scapy_append('p=sniff(filter="ether[12] != 0x88
> > + or
> > ether[13 != 0xcc]",iface="%s",count=1,timeout=5)' % self.tester_rx_iface)
> >          self.tester.scapy_append('wrpcap(\"%s\", p)' %
> > config.capture_file)
> >          self.tester.scapy_foreground()
> >
> > diff --git a/tests/TestSuite_vxlan.py b/tests/TestSuite_vxlan.py index
> > 5fef9d9..6aa1164 100644
> > --- a/tests/TestSuite_vxlan.py
> > +++ b/tests/TestSuite_vxlan.py
> > @@ -446,7 +446,7 @@ class TestVxlan(TestCase, IxiaPacketGenerator):
> >          # save the capture packet into pcap format
> >          self.tester.scapy_background()
> >          self.tester.scapy_append(
> > -            'p=sniff(iface="%s",count=1,timeout=5)' % self.recv_iface)
> > +            'p=sniff(filter="ether[12] != 0x88 or ether[13] !=
> > 0xcc",iface="%s",count=1,timeout=5)' % self.recv_iface)
> >          self.tester.scapy_append(
> >              'wrpcap(\"%s\", p)' % config.capture_file)
> >          self.tester.scapy_foreground()
> > --
> > 1.9.3



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