[dpdk-dev] l2fwd application - packets not getting forwarded
Raj Ravi
mekaviraj at gmail.com
Fri Jun 13 03:06:40 CEST 2014
/Any help ? let me know if any additional info. is required.
Thanks.
On Fri, Jun 13, 2014 at 1:17 AM, Raj Ravi <mekaviraj at gmail.com> wrote:
> Hi,
> I am trying to run l2fwd application in ixgbe based network adapter.
>
> Followed the below steps:
> 1. Add hugepages in grub commandline. 1024 pages of 2 MB allocated.
> 2. verify hugepages support in /proc/meminfo.
> 3.mounted huge pages as below:
> mount -t hugetlbfs nodev /mnt/huge
>
> 4. built DPDK environment for x86_64-default-linuxapp-gcc.
> 5. built l2fwd applicaition after exporting $RTE_SDK and $RTE_TARGET.
>
> I have three machines connected like this:
>
> machine 1 <----> machine 2 <---> machine 3
>
> machine 1 -> where pktgen runs to generate traffic
>
> machine 2 -> l2fwd runs
>
> machine 3 -> I should be able to observe packets here using tcpdump.??
>
>
> First I run l2fwd like below (in machine 2):
> ./l2fwd -c f -n 4 -- -q 4 -p 3
>
> Note port 1 and 2 are ixgbe port which are already bind to igb_uio driver.
>
> Q1. My understanding is whatever traffic arrives in port 1 will be
> forwarded to port 2.
> and port 2 will be forwarded to port 1.
> Please correct me here. ?
>
> Q2. from machine 1 to machine 3 , ping should work??
>
>
> In machine 1 , pktgen script is run as below :
>
> ==============
> pktgen script used:
> #!/bin/sh
> # pktgen.conf -- Sample configuration for send on two devices on a UP system
>
> #modprobe pktgen
> #modprobe pktgen
>
> function pgset() {
> local result
>
> echo $1 > $PGDEV
> result=`cat $PGDEV | fgrep "Result: OK:"`
> if [ "$result" = "" ]; then
> cat $PGDEV | fgrep Result:
> fi
> }
>
> function pg() {
> echo inject > $PGDEV
> cat $PGDEV
> }
>
> # On UP systems only one thread exists -- so just add devices
> # We use eth0
> echo "Adding devices to run".
>
> PGDEV=/proc/net/pktgen/kpktgend_0
> pgset "rem_device_all"
> pgset "add_device eth0"
> pgset "max_before_softirq 10000"
>
> #pgset "add_device eth0"
>
> # Configure the individual devices
> echo "Configuring devices"
>
> PGDEV=/proc/net/pktgen/eth0
> #pgset "delay 0"
> pgset "clone_skb 1000000"
> pgset "pkt_size 60"
> #pgset "min_pkt_size 60"
> #pgset "max_pkt_size 60"
> #pgset "min_pkt_size 92"
> #pgset "max_pkt_size 92"
>
>
> pgset "src_mac 70:71:BC:A8:5A:E8"
> pgset "dst_mac 70:71:bc:dc:92:ab"
>
> pgset "count 10000000"
>
> # Time to run
>
> PGDEV=/proc/net/pktgen/pgctrl
>
> echo "Running... ctrl^C to stop"
>
> pgset "start"
>
> echo "Done"
>
> cat /proc/net/pktgen/eth0
> ==============
>
> Q3: In above script, is it mandatory to mention both source and
> destination macs ??
>
> Also, destination mac should "machine 3" 's mac address??
>
>
> Q4: With the above setting , I "CANNOT" see the stats getting
> incremented at all ?? I fear the traffic is not passing through the
> ixgbe ports at all.
>
> Q5: I have tried using testpmd application, here, all the packets are
> shown in RX errors.
>
> RHEL7, 3.10.32 kernel used. DPDK 1.6.0-18.zip used.
>
> l2fwd application log:
> ===========================
> EAL: Detected lcore 0 as core 0 on socket 0
> EAL: Detected lcore 1 as core 1 on socket 0
> EAL: Detected lcore 2 as core 2 on socket 0
> EAL: Detected lcore 3 as core 3 on socket 0
> EAL: Detected lcore 4 as core 4 on socket 0
> EAL: Detected lcore 5 as core 5 on socket 0
> EAL: Detected lcore 6 as core 6 on socket 0
> EAL: Detected lcore 7 as core 7 on socket 0
> EAL: Detected lcore 8 as core 0 on socket 0
> EAL: Detected lcore 9 as core 1 on socket 0
> EAL: Detected lcore 10 as core 2 on socket 0
> EAL: Detected lcore 11 as core 3 on socket 0
> EAL: Detected lcore 12 as core 4 on socket 0
> EAL: Detected lcore 13 as core 5 on socket 0
> EAL: Detected lcore 14 as core 6 on socket 0
> EAL: Detected lcore 15 as core 7 on socket 0
> EAL: Support maximum 64 logical core(s) by configuration.
> EAL: Detected 16 lcore(s)
> EAL: Setting up memory...
> EAL: Ask a virtual area of 0x200000 bytes
> EAL: Virtual area found at 0x7f6e89400000 (size = 0x200000)
> EAL: Ask a virtual area of 0x7fc00000 bytes
> EAL: Virtual area found at 0x7f6e09600000 (size = 0x7fc00000)
> EAL: Ask a virtual area of 0x200000 bytes
> EAL: Virtual area found at 0x7f6e09200000 (size = 0x200000)
> EAL: Requesting 1024 pages of size 2MB from socket 0
> EAL: TSC frequency is ~2200002 KHz
> EAL: Master core 2 is ready (tid=89bbd840)
> EAL: PCI device 0000:01:00.0 on NUMA socket 0
> EAL: probe driver: 8086:1528 rte_ixgbe_pmd
> EAL: PCI memory mapped at 0x7f6e89987000
> EAL: PCI memory mapped at 0x7f6e89bcf000
> EAL: PCI device 0000:01:00.1 on NUMA socket 0
> EAL: probe driver: 8086:1528 rte_ixgbe_pmd
> EAL: PCI memory mapped at 0x7f6e89787000
> EAL: PCI memory mapped at 0x7f6e89bcb000
> EAL: PCI device 0000:06:00.0 on NUMA socket 0
> EAL: probe driver: 8086:1521 rte_igb_pmd
> EAL: PCI memory mapped at 0x7f6e89687000
> EAL: PCI memory mapped at 0x7f6e89bc7000
> EAL: PCI device 0000:06:00.1 on NUMA socket 0
> EAL: probe driver: 8086:1521 rte_igb_pmd
> EAL: 0000:06:00.1 not managed by UIO driver, skipping
> Lcore 2: RX port 0
> Lcore 2: RX port 1
> Initializing port 0... done:
> Port 0, MAC address: A0:36:9F:05:E8:2C
>
> Initializing port 1... done:
> Port 1, MAC address: A0:36:9F:05:E8:2E
>
> Skipping disabled port 2
>
> Checking link status.................................done
> Port 0 Link Up - speed 1000 Mbps - full-duplex
> Port 1 Link Up - speed 1000 Mbps - full-duplex
> L2FWD: entering main loop on lcore 2
> L2FWD: -- lcoreid=2 portid=0
> L2FWD: -- lcoreid=2 portid=1
> [2J [1;1H
> Port statistics ====================================
> Statistics for port 0 ------------------------------
> Packets sent: 0
> Packets received: 0
> Packets dropped: 0
> Statistics for port 1 ------------------------------
> Packets sent: 0
> Packets received: 0
> Packets dropped: 0
> Aggregate statistics ===============================
> Total packets sent: 0
> Total packets received: 0
> Total packets dropped: 0
> ====================================================
> [2J [1;1H
> Port statistics ====================================
> Statistics for port 0 ------------------------------
> Packets sent: 0
> Packets received: 0
> Packets dropped: 0
> Statistics for port 1 ------------------------------
> Packets sent: 0
> Packets received: 0
> Packets dropped: 0
> Aggregate statistics ===============================
> Total packets sent: 0
> Total packets received: 0
> Total packets dropped: 0
> ====================================================
> [2J [1;1H
> Port statistics ====================================
> Statistics for port 0 ------------------------------
> Packets sent: 0
> Packets received: 0
> Packets dropped: 0
> Statistics for port 1 ------------------------------
> Packets sent: 0
> Packets received: 0
> Packets dropped: 0
> Aggregate statistics ===============================
> Total packets sent: 0
> Total packets received: 0
> Total packets dropped: 0
> ====================================================
> [2J [1;1H
> Port statistics ====================================
> Statistics for port 0 ------------------------------
> Packets sent: 0
> Packets received: 0
> Packets dropped: 0
> Statistics for port 1 ------------------------------
> Packets sent: 0
> Packets received: 0
> Packets dropped: 0
> Aggregate statistics ===============================
> Total packets sent: 0
> Total packets received: 0
> Total packets dropped: 0
> ====================================================
> [2J [1;1H
> Port statistics ====================================
> Statistics for port 0 ------------------------------
> Packets sent: 0
> Packets received: 0
> Packets dropped: 0
> Statistics for port 1 ------------------------------
> Packets sent: 0
> Packets received: 0
> Packets dropped: 0
> Aggregate statistics ===============================
> Total packets sent: 0
> Total packets received: 0
> Total packets dropped: 0
> ====================================================
> [2J [1;1H
> Port statistics ====================================
> Statistics for port 0 ------------------------------
> Packets sent: 0
> Packets received: 0
> Packets dropped: 0
> Statistics for port 1 ------------------------------
> Packets sent: 0
> Packets received: 0
> Packets dropped: 0
> Aggregate statistics ===============================
> Total packets sent: 0
> Total packets received: 0
> Total packets dropped: 0
> ====================================================
> [2J [1;1H
> Port statistics ====================================
> Statistics for port 0 ------------------------------
> Packets sent: 0
> Packets received: 0
> Packets dropped: 0
> Statistics for port 1 ------------------------------
> Packets sent: 0
> =========================================
> Please correct/ provide suggestion if any of my assumption is wrong.
>
> Thanks,
> Kavi
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