[dpdk-users] pdump help

Nishant Verma vnish11 at gmail.com
Mon Jul 25 21:30:53 CEST 2016
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Hi Reshma,

1. Not sure what exactly is the issue behind this. But as of now i did 2
things, in place of running setup.sh, i tried to give make command, with
DESTDIR.
Now i got exe.
So if i execute the dpdk_pdump from this folder(destination directory that
i gave at the time of building DPDK), it is working fine.
But if i go in ./dpdk/app/pdump, build app here and then try to run it is
not working.

2. Even their is no  packet to capture, it showing error "insufficient
data_len of mbuf"
    this is how i run and end pdump execution.
"

root at ubuntu:/home/oneweb/dpdk/install/bin# *./dpdk_pdump --file-prefix l3f
-- --pdump
'port=0,queue=*,rx-dev=/tmp/rx-file.pcap,tx-dev=/tmp/tx-file.pcap,ring-size=1024,mbuf-size=20,total-num-mbufs=1025'*
EAL: Detected 16 lcore(s)
EAL: Probing VFIO support...
EAL: VFIO support initialized
EAL: WARNING: Address Space Layout Randomization (ASLR) is enabled in the
kernel.
EAL: This may cause issues with mapping memory into secondary processes
PMD: bnxt_rte_pmd_init() called for (null)
EAL: PCI device 0000:03:00.0 on NUMA socket 0
EAL: probe driver: 8086:15ad rte_ixgbe_pmd
EAL: PCI device 0000:03:00.1 on NUMA socket 0
EAL: probe driver: 8086:15ad rte_ixgbe_pmd
PMD: eth_ixgbe_dev_init(): No TX queues configured yet. Using default TX
function.
EAL: PCI device 0000:05:00.0 on NUMA socket 0
EAL: probe driver: 8086:1521 rte_igb_pmd
EAL: PCI device 0000:05:00.1 on NUMA socket 0
EAL: probe driver: 8086:1521 rte_igb_pmd
PMD: Initializing pmd_pcap for eth_pcap_rx_0
PMD: Creating pcap-backed ethdev on numa socket 0
Port 2 MAC: 00 00 00 01 02 03
PMD: Initializing pmd_pcap for eth_pcap_tx_0
PMD: Creating pcap-backed ethdev on numa socket 0
Port 3 MAC: 00 00 00 01 02 03
^C

Signal 2 received, preparing to exit...
##### PDUMP DEBUG STATS #####
-packets dequeued: 0
-packets transmitted to vdev: 0
-packets freed: 0
"

Here is what i get on *l3fwd *side..
"
PDUMP: User mempool: insufficient data_len of mbuf
PDUMP: User mempool: insufficient data_len of mbuf
PDUMP: User mempool: insufficient data_len of mbuf
PDUMP: User mempool: insufficient data_len of mbuf
PDUMP: User mempool: insufficient data_len of mbuf
PDUMP: User mempool: insufficient data_len of mbuf
PDUMP: User mempool: insufficient data_len of mbuf
PDUMP: User mempool: insufficient data_len of mbuf
PDUMP: User mempool: insufficient data_len of mbuf
PDUMP: User mempool: insufficient data_len of mbuf
PDUMP: User mempool: insufficient data_len of mbuf
PDUMP: User mempool: insufficient data_len of mbuf
PDUMP: User mempool: insufficient data_len of mbuf
PDUMP: User mempool: insufficient data_len of mbuf

"

Atlast it seems to be working, thanks for the much needed help.

Rgds,
Nishant



On Mon, Jul 25, 2016 at 12:21 PM, Pattan, Reshma <reshma.pattan at intel.com>
wrote:

> Hi Nishant,
>
>
>
> The possible reasons for below error are
>
>
>
> 1)      Either  below falg is set to “n” in config/common_base file,
> please set it to “y” and compile again.
>
> If this falg is not in the config/comman_base for you, just check other
> config files where this flag is there and make necessary change.
>
> # Compile software PMD backed by PCAP files
>
> #
>
> CONFIG_RTE_LIBRTE_PMD_PCAP=n
>
>
>
> 2)      (Or) you might be having dpdk code which don’t have below fix. If
> you don’t have this fix, please add this fix , compile and check again.
>
>
>
> http://dpdk.org/dev/patchwork/patch/14709/
>
> *diff --git a/drivers/net/pcap/rte_eth_pcap.c b/drivers/net/pcap/rte_eth_pcap.c*
>
> *index b341f93..7125823 100644*
>
> *--- a/drivers/net/pcap/rte_eth_pcap.c*
>
> *+++ b/drivers/net/pcap/rte_eth_pcap.c*
>
> *@@ -1090,6 +1090,6 @@*  static struct rte_driver pmd_pcap_drv = {
>
>         .uninit = rte_pmd_pcap_devuninit,
>
>  };
>
>  -PMD_REGISTER_DRIVER(pmd_pcap_drv, pcap);
>
> -DRIVER_REGISTER_PARAM_STRING(pcap, "rx_pcap=<string> tx_pcap=<string> "
>
> +PMD_REGISTER_DRIVER(pmd_pcap_drv, eth_pcap);
>
> +DRIVER_REGISTER_PARAM_STRING(eth_pcap, "rx_pcap=<string> tx_pcap=<string> "
>
>
>
>
>
> Please check these 2 items and make the necessary changes and let me know
> how do you proceed.
>
>
>
> Thanks,
>
> Reshma
>
>
>
> *From:* Pattan, Reshma
> *Sent:* Monday, July 25, 2016 5:01 PM
> *To:* 'Nishant Verma' <vnish11 at gmail.com>
> *Cc:* users at dpdk.org
> *Subject:* RE: pdump help
>
>
>
> Hi,
>
>
> Can you paste me file config/common_base content output
>
>
>
> Thanks,
>
> Reshma
>
>
>
> *From:* Nishant Verma [mailto:vnish11 at gmail.com <vnish11 at gmail.com>]
> *Sent:* Monday, July 25, 2016 4:58 PM
>
> *To:* Pattan, Reshma <reshma.pattan at intel.com>
> *Cc:* users at dpdk.org
> *Subject:* Re: pdump help
>
>
>
> Hi Reshma,
>
> Error cause is still same, but i think their is some progress what i see
> in error log as of now.
>
> Don't know what exact ican share that will help you in debug the issue, so
> as of now sharing HugePage output, l3fwd log & pdump error log.
>
> If you need anything else, please let me know.
>
>
> Option: 29
>
> AnonHugePages:      2048 kB
> HugePages_Total:    8192
> HugePages_Free:     7680
> HugePages_Rsvd:        0
> HugePages_Surp:        0
> Hugepagesize:       2048 kB
>
>
>
>
> --
>
> root at ubuntu:/home/oneweb/dpdk/examples/l3fwd/build/app# *./l3fwd -c 606
> -n 4 --proc-type=primary  --socket-mem=1024 --file-prefix l3f -- -p 0x1
> --config="(0,0,1),(0,1,2)"*
> EAL: Detected 16 lcore(s)
> EAL: Probing VFIO support...
> EAL: VFIO support initialized
> PMD: bnxt_rte_pmd_init() called for (null)
> EAL: PCI device 0000:03:00.0 on NUMA socket 0
> EAL:   probe driver: 8086:15ad rte_ixgbe_pmd
> EAL: PCI device 0000:03:00.1 on NUMA socket 0
> EAL:   probe driver: 8086:15ad rte_ixgbe_pmd
> EAL: PCI device 0000:05:00.0 on NUMA socket 0
> EAL:   probe driver: 8086:1521 rte_igb_pmd
> EAL: PCI device 0000:05:00.1 on NUMA socket 0
> EAL:   probe driver: 8086:1521 rte_igb_pmd
> L3FWD: LPM or EM none selected, default LPM on
> Initializing port 0 ... Creating queues: nb_rxq=2 nb_txq=4...
> Address:0C:C4:7A:73:EF:14, Destination:02:00:00:00:00:00, Allocated mbuf
> pool on socket 0
> LPM: Adding route 0x01010100 / 24 (0)
> LPM: Adding route IPV6 / 48 (0)
> *===============================Initialized PDUMP*
> txq=1,0,0 txq=2,1,0 txq=9,2,0 txq=10,3,0
>
> Skipping disabled port 1
>
> Initializing rx queues on lcore 1 ... rxq=0,0,0
> Initializing rx queues on lcore 2 ... rxq=0,1,0
> Initializing rx queues on lcore 9 ...
> Initializing rx queues on lcore 10 ...
>
>
> Checking link status..................................................done
> Port 0 Link Up - speed 10000 Mbps - full-duplex
> L3FWD: entering main loop on lcore 2
> L3FWD:  -- lcoreid=2 portid=0 rxqueueid=1
> L3FWD: lcore 9 has nothing to do
> L3FWD: entering main loop on lcore 1
> L3FWD:  -- lcoreid=1 portid=0 rxqueueid=0
> L3FWD: lcore 10 has nothing to do
>
> -------
>
>
>
> root at ubuntu:/home/oneweb/dpdk/app/pdump# *./dpdk_pdump --file-prefix l3f
> -- --pdump
> 'port=0,queue=*,rx-dev=/tmp/rx-file.pcap,tx-dev=/tmp/tx-file.pcap,ring-size=1024,mbuf-size=20,total-num-mbufs=1025'*
> EAL: Detected 16 lcore(s)
> EAL: Probing VFIO support...
> EAL: VFIO support initialized
> EAL: WARNING: Address Space Layout Randomization (ASLR) is enabled in the
> kernel.
> EAL:    This may cause issues with mapping memory into secondary processes
> PMD: bnxt_rte_pmd_init() called for (null)
> EAL: PCI device 0000:03:00.0 on NUMA socket 0
> EAL:   probe driver: 8086:15ad rte_ixgbe_pmd
> EAL: PCI device 0000:03:00.1 on NUMA socket 0
> EAL:   probe driver: 8086:15ad rte_ixgbe_pmd
> PMD: eth_ixgbe_dev_init(): No TX queues configured yet. Using default TX
> function.
> EAL: PCI device 0000:05:00.0 on NUMA socket 0
> EAL:   probe driver: 8086:1521 rte_igb_pmd
> EAL: PCI device 0000:05:00.1 on NUMA socket 0
> EAL:   probe driver: 8086:1521 rte_igb_pmd
> EAL: no driver found for eth_pcap_rx_0
> EAL: Driver, cannot attach the device
> *EAL: Error - exiting with code: 1*
>   Cause: vdev creation failed:create_mp_ring_vdev:669
>
> rgds,
>
> Nishant
>
>
>
> On Mon, Jul 25, 2016 at 4:57 AM, Pattan, Reshma <reshma.pattan at intel.com>
> wrote:
>
> Hi Nishant,
>
>
>
> 1)Since you are using  *--file-prefix l3f* in l3fwd command, you need to
> use same file prefix in dpdk_pdump command also. This solves below reported
> issue.
>
>
>
> 2)And also make sure l3fwd application initializes packet capture
> framework by calling rte_pdump_init () api from its main().
>
>  Also should  call uninitialize  api rte_pdump_uninit() before exiting
> l3fwd application. Please refer app/test-pmd/testpmd.c file to see how
> these apis are used.
>
>
>
> Ex:
>
> int
>
> main(int argc, char** argv)
>
> {
>
> »·······int  diag;
>
> »·······uint8_t port_id;
>
>
>
> »·······signal(SIGINT, signal_handler);
>
> »·······signal(SIGTERM, signal_handler);
>
>
>
> »·······diag = rte_eal_init(argc, argv);
>
> »·······if (diag < 0)
>
> »·······»·······rte_panic("Cannot init EAL\n");
>
> *#ifdef RTE_LIBRTE_PDUMP*
>
> *»·······/* initialize packet capture framework */*
>
> *»·······rte_pdump_init(NULL);*
>
>
>
> static void
>
> signal_handler(int signum)
>
> {
>
> »·······if (signum == SIGINT || signum == SIGTERM) {
>
> »·······»·······printf("\nSignal %d received, preparing to exit...\n",
>
> »·······»·······»·······»·······signum);
>
> *#ifdef RTE_LIBRTE_PDUMP*
>
> *»·······»·······/* uninitialize packet capture framework */*
>
> *»·······»·······rte_pdump_uninit();*
>
> #endif
>
>
>
> 3)As of now initializing and un initializing of the packet capture
> framework is done only in testpmd, for other applications this is not done.
> We left users to do this for now.
>
>
>
>
>
> Please feel free to ping me if you see some more issues.
>
>
>
> Thanks,
>
> Reshma
>
> *From:* Nishant Verma [mailto:vnish11 at gmail.com]
> *Sent:* Friday, July 22, 2016 10:42 PM
>
>
> *To:* Pattan, Reshma <reshma.pattan at intel.com>
> *Cc:* users at dpdk.org
> *Subject:* Re: pdump help
>
>
>
> Hi,
>
> Something is still creating the problem. just can't figure out.
>
> Here is the scenario....
>
> Just inserted IGB UIO module, attached one 10G NIC to DPDK &
>
> 4096 hugepage.
>
>
> ---
>
> trying to run l3fwd as primary and pducp as secondary  to capture packet
> dump.
>
> Earlier dpdk_pdump is crashing on either create_mp_ring_vdev:649 or
> create_mp_ring_vdev:669.
>
> Now i changed some parameters of pdump and l3fwd, change hugepages to 8192
> and tried to run like this..
> *./l3fwd -c 606 -n 4 --proc-type=primary  --socket-mem=1024 --file-prefix
> l3f -- -p 0x1 --config="(0,0,1),(0,1,2)"*
>
> Here is the log of app
> "
> EAL: Detected 16 lcore(s)
> EAL: Probing VFIO support...
> EAL: VFIO support initialized
> PMD: bnxt_rte_pmd_init() called for (null)
> EAL: PCI device 0000:03:00.0 on NUMA socket 0
> EAL:   probe driver: 8086:15ad rte_ixgbe_pmd
> EAL: PCI device 0000:03:00.1 on NUMA socket 0
> EAL:   probe driver: 8086:15ad rte_ixgbe_pmd
> EAL: PCI device 0000:05:00.0 on NUMA socket 0
> EAL:   probe driver: 8086:1521 rte_igb_pmd
> EAL: PCI device 0000:05:00.1 on NUMA socket 0
> EAL:   probe driver: 8086:1521 rte_igb_pmd
> L3FWD: LPM or EM none selected, default LPM on
> Initializing port 0 ... Creating queues: nb_rxq=2 nb_txq=4...
> Address:0C:C4:7A:73:EF:14, Destination:02:00:00:00:00:00, Allocated mbuf
> pool on socket 0
> LPM: Adding route 0x01010100 / 24 (0)
> LPM: Adding route IPV6 / 48 (0)
> txq=1,0,0 txq=2,1,0 txq=9,2,0 txq=10,3,0
>
> Skipping disabled port 1
>
> Initializing rx queues on lcore 1 ... rxq=0,0,0
> Initializing rx queues on lcore 2 ... rxq=0,1,0
> Initializing rx queues on lcore 9 ...
> Initializing rx queues on lcore 10 ...
>
> "
>
> It seems everything is good in this. So I tried to run pdump like
>
> * ./dpdk_pdump -- --pdump
> 'port=0,queue=*,rx-dev=/tmp/rx-file.pcap,tx-dev=/tmp/tx-file.pcap,ring-size=1024,mbuf-size=20,total-num-mbufs=1025'*
>
> Here is log for pdump
>
> "
> EAL: Detected 16 lcore(s)
> EAL: Probing VFIO support...
> EAL:   cannot connect to primary process!
> EAL: VFIO support could not be initialized
> EAL: WARNING: Address Space Layout Randomization (ASLR) is enabled in the
> kernel.
> EAL:    This may cause issues with mapping memory into secondary processes
> EAL: Could not open /dev/hugepages/rtemap_510
> PANIC in rte_eal_init():
> Cannot init memory
> 6: [./dpdk_pdump(_start+0x29) [0x4289b9]]
> 5: [/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf0)
> [0x7fa22219aa40]]
> 4: [./dpdk_pdump(main+0x155) [0x42c417]]
> 3: [./dpdk_pdump(rte_eal_init+0xf14) [0x4603b4]]
> 2: [./dpdk_pdump(__rte_panic+0xc9) [0x424b59]]
> 1: [./dpdk_pdump(rte_dump_stack+0x2b) [0x4677fb]]
> Aborted (core dumped)
>
> "
>
>
>
> It seems from log that their is some issue in memory between primary and
> secondary, but when i tried to run one l2fwd as primary and one l3fwd as
> secondary it works fine.
>
>
>
> On Fri, Jul 22, 2016 at 7:21 AM, Pattan, Reshma <reshma.pattan at intel.com>
> wrote:
>
> Hi,
>
>
>
> I see some cleanup related bug in the dpdk_pdump tool, so until I publish
> fix for that,
>
> You need to restart  both primary and secondary process( work around)
> after you see any RING/VDEV failure issues.
>
>
>
> Thanks,
>
> Reshma
>
>
>
>
>
> *From:* Pattan, Reshma
> *Sent:* Friday, July 22, 2016 10:31 AM
> *To:* 'Nishant Verma' <vnish11 at gmail.com>
> *Cc:* users at dpdk.org
> *Subject:* RE: pdump help
>
>
>
> Hi,
>
>
>
> As I see “RING: Cannot reserve memory”. Please allocate enough huge page
> memory and see what happens.
>
>
>
> Also once you encounter such error please restart  both primary and
> secondary process.
>
>
>
> Please paste me the full  error log, if you still face the issue.
>
>
>
> Thanks,
>
> Reshma
>
>
>
>
>
> *From:* Nishant Verma [mailto:vnish11 at gmail.com <vnish11 at gmail.com>]
> *Sent:* Thursday, July 21, 2016 9:10 PM
> *To:* Pattan, Reshma <reshma.pattan at intel.com>
> *Cc:* users at dpdk.org
> *Subject:* Re: pdump help
>
>
>
> Hi Reshma,
>
>
>
> Tried things pointed by you(libpcap Installed & config parameter is set).
>
> But still things are not working.
>
>
>
> "
>
> root at ubuntu:/home/oneweb/dpdk/app/pdump# ./dpdk_pdump
> --proc-type=secondary -- --pdump
> 'device_id=03:00.0,queue=*,rx-dev=/tmp/rx-file.pcap,tx-dev=/tmp/tx-file.pcap'
>
> EAL: Detected 16 lcore(s)
>
> EAL: Probing VFIO support...
>
> EAL: WARNING: Address Space Layout Randomization (ASLR) is enabled in the
> kernel.
>
> EAL:    This may cause issues with mapping memory into secondary processes
>
> PMD: bnxt_rte_pmd_init() called for (null)
>
> EAL: PCI device 0000:03:00.0 on NUMA socket 0
>
> EAL:   probe driver: 8086:15ad rte_ixgbe_pmd
>
> EAL: PCI device 0000:03:00.1 on NUMA socket 0
>
> EAL:   probe driver: 8086:15ad rte_ixgbe_pmd
>
> PMD: eth_ixgbe_dev_init(): No TX queues configured yet. Using default TX
> function.
>
> EAL: PCI device 0000:05:00.0 on NUMA socket 0
>
> EAL:   probe driver: 8086:1521 rte_igb_pmd
>
> EAL: PCI device 0000:05:00.1 on NUMA socket 0
>
> EAL:   probe driver: 8086:1521 rte_igb_pmd
>
> RING: Cannot reserve memory
>
> EAL: Error - exiting with code: 1
>
>   Cause: File exists:create_mp_ring_vdev:649
>
> "
>
>
>
>
>
> Rgds,
>
> Nishant
>
>
>
>
>
> On Thu, Jul 21, 2016 at 5:16 AM, Pattan, Reshma <reshma.pattan at intel.com>
> wrote:
>
> Hi,
>
>
>
> Pdump tool is designed based on PCAP PMD. So you need to install libpcap
> package and set CONFIG_RTE_LIBRTE_PMD_PCAP flag to “y”
>
> in config/common_base file and recompile the DPDK and run pdump tool.
> Please let me know if that fix the issue.
>
>
>
> This dependency is mentioned in the  document
> *“doc/guides/sample_app_ug/pdump.rst.”*
>
>
>
> Thanks,
>
> Reshma
>
>
>
> *From:* Nishant Verma [mailto:vnish11 at gmail.com]
> *Sent:* Wednesday, July 20, 2016 8:08 PM
> *To:* Pattan, Reshma <reshma.pattan at intel.com>
> *Subject:* pdump help
>
>
>
> Hi Reshma,
>
>
>
> i am facing some issue in executing pdump. I have seen in logs that you
> recently updated the code. Please let me know if i am doing anything wrong.
>
>
>
>
>
> *app/pdump# ./dpdk_pdump -- --pdump
> 'device_id=03:00.0,queue=*,rx-dev=/tmp/rx-1-file.pcap,tx-dev=tx-1-file.pcap'*
>
>
>
> This is the error i am getting.
>
> *Cause: File exists:create_mp_ring_vdev:649*
>
>
>
> Thanks a lot.
>
>
>
> --
>
> Rgds,
>
> Nishant
>
>
>
>
>
>
>
>
>
>
>
> --
>
> Rgds,
>
> Nishant
>
>
>
>
>
>
>
>
>
>
> --
>
> Rgds,
>
> Nishant
>
>
>
>
>
>
>
>
>
>
> --
>
> Rgds,
>
> Nishant
>
>
>
>
>
>
>



-- 
Rgds,
Nishant
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