[dpdk-users] users Digest, Vol 168, Issue 3

[Honnappa Nagarahalli]

> >
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> >
> >
> > Today's Topics:
> >
> >    1. rte flow does not work on X550 - "Not supported by L2tunnel
> >       filter" (Uiu Uioreanu)
> >    2. Re: HOW performance to run DPDK at ARM64 arch? (Pierre Laurent)
> >    3. DPDK procedure start Error: "PMD: Could not add multiqqdisc
> >       (17): File exists" (hfli at netitest.com)
> >    4. mempool: creating pool out of an already allocatedmemory
> >       (Pradeep Kumar Nalla)
> >    5. DPDK procedure start Error: "PMD: Could not add multiqqdisc
> >       (17): File exists" (hfli at netitest.com)
> >
> >
> > ----------------------------------------------------------------------
> >
> > Message: 1
> > Date: Wed, 9 Jan 2019 16:36:23 +0200
> > From: Uiu Uioreanu <uiuoreanu at gmail.com>
> > To: users at dpdk.org
> > Subject: [dpdk-users] rte flow does not work on X550 - "Not supported
> > by L2tunnel filter"
> > Message-ID:
> > <CAFAKT1ykLqJnpXiPBpc9+v=hOhwowXJoxkb_e=qDkN-
> > q_fpWhg at mail.gmail.com>
> > Content-Type: text/plain; charset="UTF-8"
> >
> > Hi,
> >
> > I am trying to use rte flow on a X550 (ixgbe) and it does not work.
> >
> > For example, I used testpmd (sudo ./testpmd -c 0xf -n 1 -- -i) to
> > validate some simple flow rules:
> > - flow validate 0 ingress pattern eth / ipv4 / udp / end actions drop
> > / end
> > - flow validate 0 ingress pattern eth / ipv4 / udp / end actions end
> > - flow validate 0 ingress pattern eth / end actions drop end
> > - etc
> >
> > Every time, I receive "caught error type 9 (specific pattern item):
> > cause: 0x7ffddca42768, Not supported by L2 tunnel filter".
> > I also tried to make a sample application to use rte flow, but it also
> > gives the error 9 and the "Not supported by L2 tunnel filter" message.
> >
> > I don't understand what the problem is. Is the pattern from the flow
> > validate command wrong? Does the port need any additional
> > configuration? (except from binding a X550 NIC to
> > igb_uio/uio_pci_generic)?
> >
> > I am using DPDK 17.11.
> >
> > Thanks,
> > Uiu
> >
> >
> > ------------------------------
> >
> > Message: 2
> > Date: Thu, 27 Dec 2018 16:41:57 +0000
> > From: Pierre Laurent <pierre.laurent at emutex.com>
> > To: "users at dpdk.org" <users at dpdk.org>
> > Subject: Re: [dpdk-users] HOW performance to run DPDK at ARM64 arch?
> > Message-ID: <2736c618-8a28-a267-d05f-93021a3d5004 at emutex.com>
> > Content-Type: text/plain; charset="utf-8"
> >
> > Hi,
> >
> > Regarding your question 2, the TX+Rx  numbers you get look strangely
> > like you are trying to use full duplex traffic on a PCIe x4
> >
> > The real bandwidth needed by an interface is approximately   ((pkt size +
> > 48) * pps)   .
> >
> > 48 bytes is the approximate little overhead , per packet, for NIC
> > descriptors and PCIe overheads. This is an undocumented heuristic ......
> >
> > I guess you are using the default DPDK options, the ethernet FCS is
> > not in PCIe bandwidth (stripped by the NIC on rx, generated by the NIC on
> TX).
> > Same for 20 bytes ethernet preamble.
> >
> >
> > If I assume you are using 60 bytes packets .   ( 60 + 48 ) * (14 + 6) * 8 =
> > approx 17 Gbps == more or less the bandwidth of a bidirectional x4
> > interface.
> >
> >
> > Tools like "lspci" and "dmidecode" will help you to investigate the
> > real capabilities of the PCIe slots where your 82599 cards are plugged in.
> >
> > The output of dmidecode looks like the following example, and x2, x4,
> > x8,
> > x16 indicate the number of lanes an interface will be able to use. The
> > more lanes, the fastest.
> >
> > System Slot Information
> >     Designation: System Slot 1
> >     Type: x8 PCI Express
> >     Current Usage: Available
> >     Length: Long
> >     ID: 1
> >     Characteristics:
> >         3.3 V is provided
> >
> >
> > To use a 82599 at full bidirectional rate, you need at least a x8
> > interface (1
> > port) or x16 interface (2 ports)
> >
> > Regards,
> >
> > Pierre
> >
> >
> > On 27/12/2018 09:24, ????? wrote:
> >
> > recently, I have debug DPDK18.08 at my arm64 arch machine, with DPDK-
> > pktgen3.5.2.
> > but the performace is very low for bidirectional traffic with x86
> > machine
> >
> > here is my data:
> > hardware Conditions?
> >         arm64:    CPU - 64 cores, CPUfreq: 1.5GHz
> >                        MEM - 64 GiB
> >                        NIC - 82599ES dual port
> >         x86:        CPU - 4 cores, CPUfreq: 3.2GHz
> >                        MEM - 4GiB
> >                        NIC - 82599ES dual port software Conditions:
> >          system kernel:
> >                   arm64: linux-4.4.58
> >                   x86: ubuntu16.04-4.4.0-generic
> >          tools:
> >                   DPDK18.08, DPDK-pktgen3.5.2
> >
> > test:
> >        |----------|                bi-directional                |-----------|
> >        | arm64 | port0 |           < - >            | port0 |     x86   |
> >        |----------|                                                     |----------|
> >
> > result
> >                                   arm64                                   x86
> > Pkts/s (Rx/Tx)            10.2/6.0Mpps                       6.0/14.80Mpps
> > MBits/s(Rx/Tx)             7000/3300 MBits/s             3300/9989 MBits/s
> >
> > Questions?
> > 1?Why DPDK data performance would be so much worse than the x86
> > architecture in arm64 addition?
Appreciate your efforts trying to run DPDK on arm64. Depending on the micro-architecture you might not see similar performance. This is due to the positioning of that micro-architecture. Some micro-architectures bring smaller cores but higher density (large number of small cores). In these cases it is better to look at the performance of the complete socket rather than a single core.

>
> One reason is 1.5GHz vs. 3.2GHz, other possible reasons may include cpu
> affinity, crossing NUMA nodes? Hugepage sizes?
> Could you check these settings?
>
> > 2?above, Tx direction is not run full, Why Rx and TX affect each other?
You might have to tune the RX and TX buffer depths.

> >
> >
> >
> >
> >
> > ------------------------------
> >
> > Message: 3
> > Date: Sun, 30 Dec 2018 20:18:46 +0800
> > From: <hfli at netitest.com>
> > To: <users at dpdk.org>,<azuredpdk at microsoft.com>
> > Subject: [dpdk-users] DPDK procedure start Error: "PMD: Could not add
> > multiqqdisc (17): File exists"
> > Message-ID: <000a01d4a039$d0755f00$71601d00$@netitest.com>
> > Content-Type: text/plain;charset="us-ascii"
> >
> > Hi Admin,
> >
> >
> >
> > Our DPDK procedure want to deploy on Hyper-v and Azure Cloud, so we
> > try it on Hyper-v firstly. It need start 2 processes, a client process
> > use port1, a server process use port2, port1 and port2 in one internal
> > subnet on a virtual switch,
> >
> >
> >
> > But only one process can be started successfully, the other said
> > error,
> > "PMD: Could not add multiq qdisc (17): File exists", our procedure is
> > running well on Vmware/KVM/ASW, is there any help for this?
> >
> >
> >
> > Below is our env:
> >
> >
> >
> > OS: Windows 10 and Hyper-V on it
> >
> > Guest OS: CentOS7.6(Upgrade kernel to 4.20.0)
> >
> > DPDK version: 18.02.2
> >
> >
> >
> > # uname -a
> >
> > Linux localhost.localdomain 4.20.0-1.el7.elrepo.x86_64 #1 SMP Sun Dec
> > 23
> > 20:11:51 EST 2018 x86_64 x86_64 x86_64 GNU/Linux
> >
> >
> >
> > root:/# ifconfig -a
> >
> > bond0: flags=5122<BROADCAST,MASTER,MULTICAST>  mtu 1500
> >
> >         ether 46:28:ec:c8:7a:74  txqueuelen 1000  (Ethernet)
> >
> >         RX packets 0  bytes 0 (0.0 B)
> >
> >         RX errors 0  dropped 0  overruns 0  frame 0
> >
> >         TX packets 0  bytes 0 (0.0 B)
> >
> >         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
> >
> >
> >
> > lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
> >
> >         inet 127.0.0.1  netmask 255.0.0.0
> >
> >         inet6 ::1  prefixlen 128  scopeid 0x10<host>
> >
> >         loop  txqueuelen 1000  (Local Loopback)
> >
> >         RX packets 75  bytes 6284 (6.1 KiB)
> >
> >         RX errors 0  dropped 0  overruns 0  frame 0
> >
> >         TX packets 75  bytes 6284 (6.1 KiB)
> >
> >         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
> >
> >
> >
> > mgmt1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
> >
> >         inet 192.168.16.130  netmask 255.255.255.0  broadcast
> > 192.168.16.255
> >
> >         inet6 fe80::78e3:1af8:3333:ff45  prefixlen 64  scopeid
> > 0x20<link>
> >
> >         ether 00:15:5d:10:85:14  txqueuelen 1000  (Ethernet)
> >
> >         RX packets 5494  bytes 706042 (689.4 KiB)
> >
> >         RX errors 0  dropped 0  overruns 0  frame 0
> >
> >         TX packets 2163  bytes 438205 (427.9 KiB)
> >
> >         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
> >
> >
> >
> > mgmt2: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
> >
> >         ether 00:15:5d:10:85:15  txqueuelen 1000  (Ethernet)
> >
> >         RX packets 3131  bytes 518243 (506.0 KiB)
> >
> >         RX errors 0  dropped 0  overruns 0  frame 0
> >
> >         TX packets 0  bytes 0 (0.0 B)
> >
> >         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
> >
> >
> >
> > port1: flags=4675<UP,BROADCAST,RUNNING,ALLMULTI,MULTICAST>  mtu
> > 1500
> >
> >         ether 00:15:5d:10:85:16  txqueuelen 1000  (Ethernet)
> >
> >         RX packets 1707  bytes 163778 (159.9 KiB)
> >
> >         RX errors 0  dropped 0  overruns 0  frame 0
> >
> >         TX packets 693  bytes 70666 (69.0 KiB)
> >
> >         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
> >
> >
> >
> > port2: flags=4675<UP,BROADCAST,RUNNING,ALLMULTI,MULTICAST>  mtu
> > 1500
> >
> >         ether 00:15:5d:10:85:17  txqueuelen 1000  (Ethernet)
> >
> >         RX packets 900  bytes 112256 (109.6 KiB)
> >
> >         RX errors 0  dropped 0  overruns 0  frame 0
> >
> >         TX packets 1504  bytes 122428 (119.5 KiB)
> >
> >         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
> >
> >
> >
> > root:/# ethtool -i port1
> >
> > driver: hv_netvsc
> >
> > version:
> >
> > firmware-version: N/A
> >
> > expansion-rom-version:
> >
> > bus-info:
> >
> > supports-statistics: yes
> >
> > supports-test: no
> >
> > supports-eeprom-access: no
> >
> > supports-register-dump: no
> >
> > supports-priv-flags: no
> >
> > root:/# ethtool -i port2
> >
> > driver: hv_netvsc
> >
> > version:
> >
> > firmware-version: N/A
> >
> > expansion-rom-version:
> >
> > bus-info:
> >
> > supports-statistics: yes
> >
> > supports-test: no
> >
> > supports-eeprom-access: no
> >
> > supports-register-dump: no
> >
> > supports-priv-flags: no
> >
> > root:/#
> >
> >
> >
> > Start server process successfully
> >
> > # ./Tester -l 3 -n 4 --vdev="net_vdev_netvsc1,iface=port2"
> > --socket-mem
> > 1500
> > --file-prefix server
> >
> > EAL: Detected 4 lcore(s)
> >
> > EAL: No free hugepages reported in hugepages-1048576kB
> >
> > EAL: Multi-process socket /var/log/.server_unix
> >
> > EAL: Probing VFIO support...
> >
> > EAL: WARNING: cpu flags constant_tsc=yes nonstop_tsc=no -> using
> > unreliable clock cycles !
> >
> > PMD: net_failsafe: Initializing Fail-safe PMD for
> > net_failsafe_net_vdev_netvsc1_id0
> >
> > PMD: net_failsafe: Creating fail-safe device on NUMA socket 0
> >
> > PMD: Initializing pmd_tap for net_tap_net_vdev_netvsc1_id0 as dtap0
> >
> > PMD: net_failsafe: MAC address is 00:15:5d:10:85:17
> >
> >
> >
> > Concorrently start client process failed
> >
> > # ./Tester -l 2 -n 4 --vdev="net_vdev_netvsc0,iface=port1"
> > --socket-mem
> > 1500
> > --file-prefix client
> >
> > EAL: Detected 4 lcore(s)
> >
> > EAL: No free hugepages reported in hugepages-1048576kB
> >
> > EAL: Multi-process socket /var/log/.client_unix
> >
> > EAL: Probing VFIO support...
> >
> > EAL: WARNING: cpu flags constant_tsc=yes nonstop_tsc=no -> using
> > unreliable clock cycles !
> >
> > PMD: net_failsafe: Initializing Fail-safe PMD for
> > net_failsafe_net_vdev_netvsc0_id0
> >
> > PMD: net_failsafe: Creating fail-safe device on NUMA socket 0
> >
> > PMD: Initializing pmd_tap for net_tap_net_vdev_netvsc0_id0 as dtap0
> >
> > PMD: Could not add multiq qdisc (17): File exists
> >
> > PMD: dtap0: failed to create multiq qdisc.
> >
> > PMD:  Disabling rte flow support: File exists(17)
> >
> > PMD: Remote feature requires flow support.
> >
> > PMD: TAP Unable to initialize net_tap_net_vdev_netvsc0_id0
> >
> > EAL: Driver cannot attach the device (net_tap_net_vdev_netvsc0_id0)
> >
> > PMD: net_failsafe: sub_device 1 probe failed (No such file or
> > directory)
> >
> > PMD: net_failsafe: MAC address is 06:5f:a6:0a:b4:f9
> >
> > vdev_probe(): failed to initialize : PMD: net_failsafe: MAC address is
> > 06:5f:a6:0a:b4:f9
> >
> > device
> >
> > EAL: Bus (vdev) probe failed.
> >
> >
> >
> >
> >
> >
> >
> > Thanks and Regards,
> >
> > Jack
> >
> >
> >
> > ------------------------------
> >
> > Message: 4
> > Date: Wed, 2 Jan 2019 11:29:52 +0000
> > From: Pradeep Kumar Nalla <pnalla at marvell.com>
> > To: "users at dpdk.org" <users at dpdk.org>
> > Subject: [dpdk-users] mempool: creating pool out of an already
> > allocatedmemory
> > Message-ID:
> > <BN8PR18MB2755E25C423D078FD7EFFE08C68C0 at BN8PR18MB275
> > 5.namprd18.prod.outlook.com>
> >
> > Content-Type: text/plain; charset="us-ascii"
> >
> > Hello
> >
> > Is there a way or API to create a mempool out of already allocated
> > memory?
> >
> > Thanks
> > Pradeep.
> >
> >
> > ------------------------------
> >
> > Message: 5
> > Date: Fri, 4 Jan 2019 11:46:48 +0800
> > From: <hfli at netitest.com>
> > To: <matan at mellanox.com>
> > Cc: <users at dpdk.org>,<azuredpdk at microsoft.com>
> > Subject: [dpdk-users] DPDK procedure start Error: "PMD: Could not add
> > multiqqdisc (17): File exists"
> > Message-ID: <000f01d4a3e0$1f6bb060$5e431120$@netitest.com>
> > Content-Type: text/plain;charset="us-ascii"
> >
> > Hi Matan,
> >
> >
> >
> > Could you help us for below error?
> >
> >
> >
> > PMD: Could not add multiq qdisc (17): File exists
> >
> > PMD: dtap0: failed to create multiq qdisc.
> >
> > PMD:  Disabling rte flow support: File exists(17)
> >
> > PMD: Remote feature requires flow support.
> >
> > PMD: TAP Unable to initialize net_tap_net_vdev_netvsc0_id0
> >
> > EAL: Driver cannot attach the device (net_tap_net_vdev_netvsc0_id0)
> >
> > PMD: net_failsafe: sub_device 1 probe failed (No such file or
> > directory)
> >
> > PMD: net_failsafe: MAC address is 06:5f:a6:0a:b4:f9
> >
> > vdev_probe(): failed to initialize : PMD: net_failsafe: MAC address is
> > 06:5f:a6:0a:b4:f9
> >
> > device
> >
> > EAL: Bus (vdev) probe failed.
> >
> >
> >
> >
> >
> > Our DPDK procedure want to deploy on Hyper-v and Azure Cloud, so we
> > try it on Hyper-v firstly. It need start 2 processes, a client process
> > use port1, a server process use port2, port1 and port2 in one internal
> > subnet on a virtual switch,
> >
> >
> >
> > But only one process can be started successfully, the other said
> > error,
> > "PMD: Could not add multiq qdisc (17): File exists", our procedure is
> > running well on Vmware/KVM/ASW, is there any help for this?
> >
> >
> >
> > Below is our env:
> >
> >
> >
> > OS: Windows 10 and Hyper-V on it
> >
> > Guest OS: CentOS7.6(Upgrade kernel to 4.20.0)
> >
> > DPDK version: 18.02.2
> >
> >
> >
> > # uname -a
> >
> > Linux localhost.localdomain 4.20.0-1.el7.elrepo.x86_64 #1 SMP Sun Dec
> > 23
> > 20:11:51 EST 2018 x86_64 x86_64 x86_64 GNU/Linux
> >
> >
> >
> > root:/# ifconfig -a
> >
> > bond0: flags=5122<BROADCAST,MASTER,MULTICAST>  mtu 1500
> >
> >         ether 46:28:ec:c8:7a:74  txqueuelen 1000  (Ethernet)
> >
> >         RX packets 0  bytes 0 (0.0 B)
> >
> >         RX errors 0  dropped 0  overruns 0  frame 0
> >
> >         TX packets 0  bytes 0 (0.0 B)
> >
> >         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
> >
> >
> >
> > lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
> >
> >         inet 127.0.0.1  netmask 255.0.0.0
> >
> >         inet6 ::1  prefixlen 128  scopeid 0x10<host>
> >
> >         loop  txqueuelen 1000  (Local Loopback)
> >
> >         RX packets 75  bytes 6284 (6.1 KiB)
> >
> >         RX errors 0  dropped 0  overruns 0  frame 0
> >
> >         TX packets 75  bytes 6284 (6.1 KiB)
> >
> >         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
> >
> >
> >
> > mgmt1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
> >
> >         inet 192.168.16.130  netmask 255.255.255.0  broadcast
> > 192.168.16.255
> >
> >         inet6 fe80::78e3:1af8:3333:ff45  prefixlen 64  scopeid
> > 0x20<link>
> >
> >         ether 00:15:5d:10:85:14  txqueuelen 1000  (Ethernet)
> >
> >         RX packets 5494  bytes 706042 (689.4 KiB)
> >
> >         RX errors 0  dropped 0  overruns 0  frame 0
> >
> >         TX packets 2163  bytes 438205 (427.9 KiB)
> >
> >         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
> >
> >
> >
> > mgmt2: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
> >
> >         ether 00:15:5d:10:85:15  txqueuelen 1000  (Ethernet)
> >
> >         RX packets 3131  bytes 518243 (506.0 KiB)
> >
> >         RX errors 0  dropped 0  overruns 0  frame 0
> >
> >         TX packets 0  bytes 0 (0.0 B)
> >
> >         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
> >
> >
> >
> > port1: flags=4675<UP,BROADCAST,RUNNING,ALLMULTI,MULTICAST>  mtu
> > 1500
> >
> >         ether 00:15:5d:10:85:16  txqueuelen 1000  (Ethernet)
> >
> >         RX packets 1707  bytes 163778 (159.9 KiB)
> >
> >         RX errors 0  dropped 0  overruns 0  frame 0
> >
> >         TX packets 693  bytes 70666 (69.0 KiB)
> >
> >         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
> >
> >
> >
> > port2: flags=4675<UP,BROADCAST,RUNNING,ALLMULTI,MULTICAST>  mtu
> > 1500
> >
> >         ether 00:15:5d:10:85:17  txqueuelen 1000  (Ethernet)
> >
> >         RX packets 900  bytes 112256 (109.6 KiB)
> >
> >         RX errors 0  dropped 0  overruns 0  frame 0
> >
> >         TX packets 1504  bytes 122428 (119.5 KiB)
> >
> >         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
> >
> >
> >
> > root:/# ethtool -i port1
> >
> > driver: hv_netvsc
> >
> > version:
> >
> > firmware-version: N/A
> >
> > expansion-rom-version:
> >
> > bus-info:
> >
> > supports-statistics: yes
> >
> > supports-test: no
> >
> > supports-eeprom-access: no
> >
> > supports-register-dump: no
> >
> > supports-priv-flags: no
> >
> > root:/# ethtool -i port2
> >
> > driver: hv_netvsc
> >
> > version:
> >
> > firmware-version: N/A
> >
> > expansion-rom-version:
> >
> > bus-info:
> >
> > supports-statistics: yes
> >
> > supports-test: no
> >
> > supports-eeprom-access: no
> >
> > supports-register-dump: no
> >
> > supports-priv-flags: no
> >
> > root:/#
> >
> >
> >
> > Start server process successfully
> >
> > # ./VM_DPDK -l 3 -n 4 --vdev="net_vdev_netvsc1,iface=port2"
> > --socket-mem
> > 1500 --file-prefix server
> >
> > EAL: Detected 4 lcore(s)
> >
> > EAL: No free hugepages reported in hugepages-1048576kB
> >
> > EAL: Multi-process socket /var/log/.server_unix
> >
> > EAL: Probing VFIO support...
> >
> > EAL: WARNING: cpu flags constant_tsc=yes nonstop_tsc=no -> using
> > unreliable clock cycles !
> >
> > PMD: net_failsafe: Initializing Fail-safe PMD for
> > net_failsafe_net_vdev_netvsc1_id0
> >
> > PMD: net_failsafe: Creating fail-safe device on NUMA socket 0
> >
> > PMD: Initializing pmd_tap for net_tap_net_vdev_netvsc1_id0 as dtap0
> >
> > PMD: net_failsafe: MAC address is 00:15:5d:10:85:17
> >
> >
> >
> > Concorrently start client process failed
> >
> > # ./VM_DPDK -l 2 -n 4 --vdev="net_vdev_netvsc0,iface=port1"
> > --socket-mem
> > 1500 --file-prefix client
> >
> > EAL: Detected 4 lcore(s)
> >
> > EAL: No free hugepages reported in hugepages-1048576kB
> >
> > EAL: Multi-process socket /var/log/.client_unix
> >
> > EAL: Probing VFIO support...
> >
> > EAL: WARNING: cpu flags constant_tsc=yes nonstop_tsc=no -> using
> > unreliable clock cycles !
> >
> > PMD: net_failsafe: Initializing Fail-safe PMD for
> > net_failsafe_net_vdev_netvsc0_id0
> >
> > PMD: net_failsafe: Creating fail-safe device on NUMA socket 0
> >
> > PMD: Initializing pmd_tap for net_tap_net_vdev_netvsc0_id0 as dtap0
> >
> > PMD: Could not add multiq qdisc (17): File exists
> >
> > PMD: dtap0: failed to create multiq qdisc.
> >
> > PMD:  Disabling rte flow support: File exists(17)
> >
> > PMD: Remote feature requires flow support.
> >
> > PMD: TAP Unable to initialize net_tap_net_vdev_netvsc0_id0
> >
> > EAL: Driver cannot attach the device (net_tap_net_vdev_netvsc0_id0)
> >
> > PMD: net_failsafe: sub_device 1 probe failed (No such file or
> > directory)
> >
> > PMD: net_failsafe: MAC address is 06:5f:a6:0a:b4:f9
> >
> > vdev_probe(): failed to initialize : PMD: net_failsafe: MAC address is
> > 06:5f:a6:0a:b4:f9
> >
> > device
> >
> > EAL: Bus (vdev) probe failed.
> >
> >
> >
> >
> >
> >
> >
> > Thanks and Regards,
> >
> > Jack
> >
> >
> >
> > End of users Digest, Vol 168, Issue 3
> > *************************************
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