[dpdk-users] FW: i40e + rte_flow: Drop filter not working

Ye Xiaolong xiaolong.ye at intel.com
Wed Jun 19 13:42:28 CEST 2019


>-----Original Message-----
>From: users [mailto:users-bounces at dpdk.org] On Behalf Of Sruthi Yellamraju
>Sent: Monday, June 17, 2019 3:19 AM
>To: users at dpdk.org
>Subject: [dpdk-users] i40e + rte_flow: Drop filter not working
>
>Hello,
>
>I am trying to test the rte_flow API using the testpmd application.
>Mainly I start traffic forwarding, then set a rte_flow rule to drop all ethernet traffic, then check stats to see if traffic is dropped.
>Tried many different combinations but traffic is not being dropped.
>
>- Any thoughts on how I can get a drop rule to work using testpmd?

The rte_flow rule "flow create 0 ingress pattern eth / end actions drop / end"
you used in below test is not supported, it should return an explicit error
when you tried to create it, it's an software bug and we'll fix it.

As for how to drop an available rule in testpmd, you can refer to

https://doc.dpdk.org/guides/howto/rte_flow.html

The flow rule example in it is: flow create 0 ingress pattern eth / vlan / ipv4 dst is 192.168.3.2 / end actions drop / end

Also, the statistic you get from `show port stats 0` is obtained by reading vsi
registers, it will record all packets hardware received even if the packet will
be filtered out by the rte flow. Instead, you can try to `set verbose 1` in testpmd,
then you can observe whether the rte_flow rule takes effect or not.

>- Also, is there a list of Intel NICs that support rte_flow with descriptions of what rte_flow features they support?
>

Unfortunately, there is no such list info available currently, but we'll try to
improve our doc in dpdk repo.

@beilei, @qi, correct me if I am wrong.

Thanks,
Xiaolong

>My NIC is an Intel X710. Using DPDK 19.02.
>My steps:
>*(1) Start testpmd:*
>$ sudo ./build/app/testpmd –l 12,13,14 –n 4 -- -i
>EAL: Detected 56 lcore(s)
>EAL: Detected 2 NUMA nodes
>EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
>EAL: No free hugepages reported in hugepages-1048576kB
>EAL: Probing VFIO support...
>EAL: VFIO support initialized
>EAL: PCI device 0000:08:00.0 on NUMA socket 0
>EAL:   probe driver: 8086:1572 net_i40e
>EAL:   using IOMMU type 1 (Type 1)
>EAL: PCI device 0000:08:00.1 on NUMA socket 0
>EAL:   probe driver: 8086:1572 net_i40e
>EAL: PCI device 0000:82:00.0 on NUMA socket 1
>EAL:   probe driver: 8086:1572 net_i40e
>EAL: PCI device 0000:82:00.1 on NUMA socket 1
>EAL:   probe driver: 8086:1572 net_i40e
>Interactive-mode selected
>testpmd: create a new mbuf pool <mbuf_pool_socket_0>: n=587456, size=2176,
>socket=0
>testpmd: preferred mempool ops selected: ring_mp_mc
>testpmd: create a new mbuf pool <mbuf_pool_socket_1>: n=587456, size=2176,
>socket=1
>testpmd: preferred mempool ops selected: ring_mp_mc Configuring Port 0 (socket 0) Port 0: 3C:FD:FE:CE:EC:54 Configuring Port 1 (socket 1) Port 1: 3C:FD:FE:CE:EE:08 Checking link statuses...
>Done
>testpmd> sta
>Port 1: link state change event
>Port 0: link state change event
>
>(*2) Start forwarding traffic between two ports*
>testpmd> start
>io packet forwarding - ports=2 - cores=1 - streams=2 - NUMA support enabled, MP allocation mode: native Logical Core 1 (socket 0) forwards packets on 2 streams:
>  RX P=0/Q=0 (socket 0) -> TX P=1/Q=0 (socket 1) peer=02:00:00:00:00:01
>  RX P=1/Q=0 (socket 1) -> TX P=0/Q=0 (socket 0) peer=02:00:00:00:00:00
>  io packet forwarding packets/burst=32
>  nb forwarding cores=1 - nb forwarding ports=2
>  port 0: RX queue number: 1 Tx queue number: 1
>    Rx offloads=0x0 Tx offloads=0x10000
>    RX queue: 0
>      RX desc=256 - RX free threshold=32
>      RX threshold registers: pthresh=8 hthresh=8  wthresh=0
>      RX Offloads=0x0
>    TX queue: 0
>      TX desc=256 - TX free threshold=32
>      TX threshold registers: pthresh=32 hthresh=0  wthresh=0
>      TX offloads=0x0 - TX RS bit threshold=32
>  port 1: RX queue number: 1 Tx queue number: 1
>    Rx offloads=0x0 Tx offloads=0x10000
>    RX queue: 0
>      RX desc=256 - RX free threshold=32
>      RX threshold registers: pthresh=8 hthresh=8  wthresh=0
>      RX Offloads=0x0
>    TX queue: 0
>      TX desc=256 - TX free threshold=32
>      TX threshold registers: pthresh=32 hthresh=0  wthresh=0
>      TX offloads=0x0 - TX RS bit threshold=32
>
>*(3) Check that traffic is flowing: OK*
>
>testpmd> show port stats all
>  ######################## NIC statistics for port 0 ########################
>  RX-packets: 2565456    RX-missed: 5780962    RX-bytes:  4512982511
>  RX-errors: 2
>  RX-nombuf:  0
>  TX-packets: 2562340    TX-errors: 0          TX-bytes:  1383470795
>  Throughput (since last show)
>  Rx-pps:            0
>  Tx-pps:            0
>
>####################################################################################################
>NIC statistics for port 1
>########################
>  RX-packets: 2563321    RX-missed: 5470250    RX-bytes:  4360388448
>  RX-errors: 2
>  RX-nombuf:  0
>  TX-packets: 2565053    TX-errors: 0          TX-bytes:  1384794806
>  Throughput (since last show)
>  Rx-pps:            0
>  Tx-pps:            0
>
>############################################################################
>
>testpmd> show port stats all
>  ######################## NIC statistics for port 0 ########################
>  RX-packets: 3738196    RX-missed: 5781554    RX-bytes:  5226453840
>  RX-errors: 2
>  RX-nombuf:  0
>  TX-packets: 3733847    TX-errors: 0          TX-bytes:  2095944031
>  Throughput (since last show)
>  Rx-pps:      1146794
>  Tx-pps:      1145588
>
>####################################################################################################
>NIC statistics for port 1
>########################
>  RX-packets: 3734584    RX-missed: 5470836    RX-bytes:  5073167767
>  RX-errors: 2
>  RX-nombuf:  0
>  TX-packets: 3737663    TX-errors: 0          TX-bytes:  2097873710
>  Throughput (since last show)
>  Rx-pps:      1145356
>  Tx-pps:      1146673
>
>############################################################################
>
>
>*(4) Set filters to drop all eth traffic from both ports*
>
>
>testpmd> flow create 0 ingress pattern eth / end actions drop / end
>
>Flow rule #0 created
>
>testpmd> flow create 1 ingress pattern eth / end actions drop / end
>
>Flow rule #0 created
>
>
>*(5) Check whether traffic is dropped. Traffic is actually not being dropped, so the filter does not seem to work.*
>
>
>testpmd> show port stats all
>  ######################## NIC statistics for port 0 ########################
>  RX-packets: 22396701   RX-missed: 5807012    RX-bytes:  15827722523
>  RX-errors: 2
>  RX-nombuf:  0
>  TX-packets: 22345743   TX-errors: 0          TX-bytes:  12669400435
>  Throughput (since last show)
>  Rx-pps:      1149437
>  Tx-pps:      1146447
>
>####################################################################################################
>NIC statistics for port 1
>########################
>  RX-packets: 22369666   RX-missed: 5496215    RX-bytes:  15660935280
>  RX-errors: 2
>  RX-nombuf:  0
>  TX-packets: 22333043   TX-errors: 0          TX-bytes:  12682032499
>  Throughput (since last show)
>  Rx-pps:      1147969
>  Tx-pps:      1145246
>
>
>############################################################################
>testpmd> show port stats all
>  ######################## NIC statistics for port 0 ########################
>  RX-packets: 25054000   RX-missed: 5810727    RX-bytes:  16926854689
>  RX-errors: 2
>  RX-nombuf:  0
>  TX-packets: 24977043   TX-errors: 0          TX-bytes:  13764321537
>  Throughput (since last show)
>  Rx-pps:      1405948
>  Tx-pps:      1392192
>
>
>####################################################################################################
>NIC statistics for port 1
>########################
>  RX-packets: 25024585   RX-missed: 5499881    RX-bytes:  16758760036
>  RX-errors: 2
>  RX-nombuf:  0
>  TX-packets: 24966843   TX-errors: 0          TX-bytes:  13778185984
>  Throughput (since last show)
>  Rx-pps:      1404664
>  Tx-pps:      1393490
>
>############################################################################
>
>Thanks,
>
>Sruthi


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