[dpdk-users] using the basic l2fwd app

[dpdk-users] using the basic l2fwd app

[Kushal Gautam]

Hi:

I am new to DPDK and my current use case with DPDK is minimal. Thus, I
think the l2fwd type of sample application should suffice.

Below is a portion of the output of `dpdk-devbind.py --status` command
My DPDK version is 18.08, and I am using Ubuntu 16.04 (Linux Kernel version
4.15.12)

Network devices using kernel driver
===================================
0000:01:00.0 'I350 Gigabit Network Connection 1521' if=eno1 drv=igb
unused=igb_uio *Active*
0000:01:00.1 'I350 Gigabit Network Connection 1521' if=eno2 drv=igb
unused=igb_uio
0000:81:00.0 'Ethernet Controller X710 for 10GbE SFP+ 1572' if=ens1f0
drv=i40e unused=igb_uio *Active*
0000:81:00.1 'Ethernet Controller X710 for 10GbE SFP+ 1572' if=ens1f1
drv=i40e unused=igb_uio *Active*

I am connecting to this machine via 0000:01:00.0

My requirement is to be able to send packets from 0000:81:00.0 to
0000:81:00.1 and get some measurements like tx and rx times.

I tried to run the sample app as (as shown in docs):

./l2fwd -n 1 -c f -- -q 8 -p 0x3

I have an error like this:

EAL: Detected 16 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: No free hugepages reported in hugepages-1048576kB
EAL: No free hugepages reported in hugepages-1048576kB
EAL: Probing VFIO support...
EAL: PCI device 0000:01:00.0 on NUMA socket 0
EAL:   probe driver: 8086:1521 net_e1000_igb
EAL: PCI device 0000:01:00.1 on NUMA socket 0
EAL:   probe driver: 8086:1521 net_e1000_igb
EAL: PCI device 0000:81:00.0 on NUMA socket 1
EAL:   probe driver: 8086:1572 net_i40e
EAL: PCI device 0000:81:00.1 on NUMA socket 1
EAL:   probe driver: 8086:1572 net_i40e
MAC updating enabled
EAL: Error - exiting with code: 1
  Cause: No Ethernet ports - bye

I did not understand the usage of port mask in this context.

Some inputs on this would be very helpful.

Regards,
Kushal.

Re: [dpdk-users] using the basic l2fwd app

[Rami Rosen]

Hi Kushal,
The output of dpdk-devbind -- status that you posted shows that there are
no ports that are bound to dpdk. This is the reason for the error you get.
You should try
insmod igb_uio.ko
( this kernel module is generated in the build process of DPDK)

And
dpdk-devbind.py -b igb_uio 0000:81:00.0

And likewise to the other port, 0000:81:00.1
And the launch the l2fwd app.


You can also use vfio-pci or uio_pci_generic for binding the device to
DPDK, look in the docs.

Regards,
Rami Rosen



בתאריך יום ה׳, 18 באוק׳ 2018, 17:24, מאת Kushal Gautam ‏<
kushal.gautam@gmail.com>:

> Hi:
>
> I am new to DPDK and my current use case with DPDK is minimal. Thus, I
> think the l2fwd type of sample application should suffice.
>
> Below is a portion of the output of `dpdk-devbind.py --status` command
> My DPDK version is 18.08, and I am using Ubuntu 16.04 (Linux Kernel version
> 4.15.12)
>
> Network devices using kernel driver
> ===================================
> 0000:01:00.0 'I350 Gigabit Network Connection 1521' if=eno1 drv=igb
> unused=igb_uio *Active*
> 0000:01:00.1 'I350 Gigabit Network Connection 1521' if=eno2 drv=igb
> unused=igb_uio
> 0000:81:00.0 'Ethernet Controller X710 for 10GbE SFP+ 1572' if=ens1f0
> drv=i40e unused=igb_uio *Active*
> 0000:81:00.1 'Ethernet Controller X710 for 10GbE SFP+ 1572' if=ens1f1
> drv=i40e unused=igb_uio *Active*
>
> I am connecting to this machine via 0000:01:00.0
>
> My requirement is to be able to send packets from 0000:81:00.0 to
> 0000:81:00.1 and get some measurements like tx and rx times.
>
> I tried to run the sample app as (as shown in docs):
>
> ./l2fwd -n 1 -c f -- -q 8 -p 0x3
>
> I have an error like this:
>
> EAL: Detected 16 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: No free hugepages reported in hugepages-1048576kB
> EAL: No free hugepages reported in hugepages-1048576kB
> EAL: Probing VFIO support...
> EAL: PCI device 0000:01:00.0 on NUMA socket 0
> EAL:   probe driver: 8086:1521 net_e1000_igb
> EAL: PCI device 0000:01:00.1 on NUMA socket 0
> EAL:   probe driver: 8086:1521 net_e1000_igb
> EAL: PCI device 0000:81:00.0 on NUMA socket 1
> EAL:   probe driver: 8086:1572 net_i40e
> EAL: PCI device 0000:81:00.1 on NUMA socket 1
> EAL:   probe driver: 8086:1572 net_i40e
> MAC updating enabled
> EAL: Error - exiting with code: 1
>   Cause: No Ethernet ports - bye
>
> I did not understand the usage of port mask in this context.
>
> Some inputs on this would be very helpful.
>
> Regards,
> Kushal.
>

Re: [dpdk-users] using the basic l2fwd app

[Kushal Gautam]

Hi Rami:

thank you for your inputs.

Indeed, I had syntactic issues, and also, restarting the machine did the
trick.

One thing that I was not clear is about "portmask".

For instance, in the docs, we can find "./l2fwd -n 1 -c f -- -q 8 -p 0x3".
What exactly the value "0x3" refers to?

Regards,
Kushal.

On Thu, Oct 18, 2018 at 7:34 PM Rami Rosen <roszenrami@gmail.com> wrote:

> Hi Kushal,
> The output of dpdk-devbind -- status that you posted shows that there are
> no ports that are bound to dpdk. This is the reason for the error you get.
> You should try
> insmod igb_uio.ko
> ( this kernel module is generated in the build process of DPDK)
>
> And
> dpdk-devbind.py -b igb_uio 0000:81:00.0
>
> And likewise to the other port, 0000:81:00.1
> And the launch the l2fwd app.
>
>
> You can also use vfio-pci or uio_pci_generic for binding the device to
> DPDK, look in the docs.
>
> Regards,
> Rami Rosen
>
>
>
> בתאריך יום ה׳, 18 באוק׳ 2018, 17:24, מאת Kushal Gautam ‏<
> kushal.gautam@gmail.com>:
>
>> Hi:
>>
>> I am new to DPDK and my current use case with DPDK is minimal. Thus, I
>> think the l2fwd type of sample application should suffice.
>>
>> Below is a portion of the output of `dpdk-devbind.py --status` command
>> My DPDK version is 18.08, and I am using Ubuntu 16.04 (Linux Kernel
>> version
>> 4.15.12)
>>
>> Network devices using kernel driver
>> ===================================
>> 0000:01:00.0 'I350 Gigabit Network Connection 1521' if=eno1 drv=igb
>> unused=igb_uio *Active*
>> 0000:01:00.1 'I350 Gigabit Network Connection 1521' if=eno2 drv=igb
>> unused=igb_uio
>> 0000:81:00.0 'Ethernet Controller X710 for 10GbE SFP+ 1572' if=ens1f0
>> drv=i40e unused=igb_uio *Active*
>> 0000:81:00.1 'Ethernet Controller X710 for 10GbE SFP+ 1572' if=ens1f1
>> drv=i40e unused=igb_uio *Active*
>>
>> I am connecting to this machine via 0000:01:00.0
>>
>> My requirement is to be able to send packets from 0000:81:00.0 to
>> 0000:81:00.1 and get some measurements like tx and rx times.
>>
>> I tried to run the sample app as (as shown in docs):
>>
>> ./l2fwd -n 1 -c f -- -q 8 -p 0x3
>>
>> I have an error like this:
>>
>> EAL: Detected 16 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: No free hugepages reported in hugepages-1048576kB
>> EAL: No free hugepages reported in hugepages-1048576kB
>> EAL: Probing VFIO support...
>> EAL: PCI device 0000:01:00.0 on NUMA socket 0
>> EAL:   probe driver: 8086:1521 net_e1000_igb
>> EAL: PCI device 0000:01:00.1 on NUMA socket 0
>> EAL:   probe driver: 8086:1521 net_e1000_igb
>> EAL: PCI device 0000:81:00.0 on NUMA socket 1
>> EAL:   probe driver: 8086:1572 net_i40e
>> EAL: PCI device 0000:81:00.1 on NUMA socket 1
>> EAL:   probe driver: 8086:1572 net_i40e
>> MAC updating enabled
>> EAL: Error - exiting with code: 1
>>   Cause: No Ethernet ports - bye
>>
>> I did not understand the usage of port mask in this context.
>>
>> Some inputs on this would be very helpful.
>>
>> Regards,
>> Kushal.
>>
>

Re: [dpdk-users] using the basic l2fwd app

[Rami Rosen]

Hi Kushal,
0x3 is a bitmask of ports. It is represented in binary as 0011. This means
that ports 0 and port 1should be used by the DPDK application that you use.
If you want to use other ports in your application, you should use a
different portmask. For example, to use port 0 and port 3, you need a port
mask of 1001 in binary, which is 0x9 in hex.

Regards,
Rami Rosen


בתאריך יום ו׳, 19 באוק׳ 2018, 00:17, מאת Kushal Gautam ‏<
kushal.gautam@gmail.com>:

> Hi Rami:
>
> thank you for your inputs.
>
> Indeed, I had syntactic issues, and also, restarting the machine did the
> trick.
>
> One thing that I was not clear is about "portmask".
>
> For instance, in the docs, we can find "./l2fwd -n 1 -c f -- -q 8 -p 0x3".
> What exactly the value "0x3" refers to?
>
> Regards,
> Kushal.
>
> On Thu, Oct 18, 2018 at 7:34 PM Rami Rosen <roszenrami@gmail.com> wrote:
>
>> Hi Kushal,
>> The output of dpdk-devbind -- status that you posted shows that there are
>> no ports that are bound to dpdk. This is the reason for the error you get.
>> You should try
>> insmod igb_uio.ko
>> ( this kernel module is generated in the build process of DPDK)
>>
>> And
>> dpdk-devbind.py -b igb_uio 0000:81:00.0
>>
>> And likewise to the other port, 0000:81:00.1
>> And the launch the l2fwd app.
>>
>>
>> You can also use vfio-pci or uio_pci_generic for binding the device to
>> DPDK, look in the docs.
>>
>> Regards,
>> Rami Rosen
>>
>>
>>
>> בתאריך יום ה׳, 18 באוק׳ 2018, 17:24, מאת Kushal Gautam ‏<
>> kushal.gautam@gmail.com>:
>>
>>> Hi:
>>>
>>> I am new to DPDK and my current use case with DPDK is minimal. Thus, I
>>> think the l2fwd type of sample application should suffice.
>>>
>>> Below is a portion of the output of `dpdk-devbind.py --status` command
>>> My DPDK version is 18.08, and I am using Ubuntu 16.04 (Linux Kernel
>>> version
>>> 4.15.12)
>>>
>>> Network devices using kernel driver
>>> ===================================
>>> 0000:01:00.0 'I350 Gigabit Network Connection 1521' if=eno1 drv=igb
>>> unused=igb_uio *Active*
>>> 0000:01:00.1 'I350 Gigabit Network Connection 1521' if=eno2 drv=igb
>>> unused=igb_uio
>>> 0000:81:00.0 'Ethernet Controller X710 for 10GbE SFP+ 1572' if=ens1f0
>>> drv=i40e unused=igb_uio *Active*
>>> 0000:81:00.1 'Ethernet Controller X710 for 10GbE SFP+ 1572' if=ens1f1
>>> drv=i40e unused=igb_uio *Active*
>>>
>>> I am connecting to this machine via 0000:01:00.0
>>>
>>> My requirement is to be able to send packets from 0000:81:00.0 to
>>> 0000:81:00.1 and get some measurements like tx and rx times.
>>>
>>> I tried to run the sample app as (as shown in docs):
>>>
>>> ./l2fwd -n 1 -c f -- -q 8 -p 0x3
>>>
>>> I have an error like this:
>>>
>>> EAL: Detected 16 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: No free hugepages reported in hugepages-1048576kB
>>> EAL: No free hugepages reported in hugepages-1048576kB
>>> EAL: Probing VFIO support...
>>> EAL: PCI device 0000:01:00.0 on NUMA socket 0
>>> EAL:   probe driver: 8086:1521 net_e1000_igb
>>> EAL: PCI device 0000:01:00.1 on NUMA socket 0
>>> EAL:   probe driver: 8086:1521 net_e1000_igb
>>> EAL: PCI device 0000:81:00.0 on NUMA socket 1
>>> EAL:   probe driver: 8086:1572 net_i40e
>>> EAL: PCI device 0000:81:00.1 on NUMA socket 1
>>> EAL:   probe driver: 8086:1572 net_i40e
>>> MAC updating enabled
>>> EAL: Error - exiting with code: 1
>>>   Cause: No Ethernet ports - bye
>>>
>>> I did not understand the usage of port mask in this context.
>>>
>>> Some inputs on this would be very helpful.
>>>
>>> Regards,
>>> Kushal.
>>>
>>

Re: [dpdk-users] using the basic l2fwd app

[Kushal Gautam]

Hi Rami,

Thank you again. That's what confused me.

Regards,
Kushal.

On Fri, Oct 19, 2018, 01:36 Rami Rosen <roszenrami@gmail.com> wrote:

> Hi Kushal,
> 0x3 is a bitmask of ports. It is represented in binary as 0011. This means
> that ports 0 and port 1should be used by the DPDK application that you use.
> If you want to use other ports in your application, you should use a
> different portmask. For example, to use port 0 and port 3, you need a port
> mask of 1001 in binary, which is 0x9 in hex.
>
> Regards,
> Rami Rosen
>
>
> בתאריך יום ו׳, 19 באוק׳ 2018, 00:17, מאת Kushal Gautam ‏<
> kushal.gautam@gmail.com>:
>
>> Hi Rami:
>>
>> thank you for your inputs.
>>
>> Indeed, I had syntactic issues, and also, restarting the machine did the
>> trick.
>>
>> One thing that I was not clear is about "portmask".
>>
>> For instance, in the docs, we can find "./l2fwd -n 1 -c f -- -q 8 -p
>> 0x3". What exactly the value "0x3" refers to?
>>
>> Regards,
>> Kushal.
>>
>> On Thu, Oct 18, 2018 at 7:34 PM Rami Rosen <roszenrami@gmail.com> wrote:
>>
>>> Hi Kushal,
>>> The output of dpdk-devbind -- status that you posted shows that there
>>> are no ports that are bound to dpdk. This is the reason for the error you
>>> get.
>>> You should try
>>> insmod igb_uio.ko
>>> ( this kernel module is generated in the build process of DPDK)
>>>
>>> And
>>> dpdk-devbind.py -b igb_uio 0000:81:00.0
>>>
>>> And likewise to the other port, 0000:81:00.1
>>> And the launch the l2fwd app.
>>>
>>>
>>> You can also use vfio-pci or uio_pci_generic for binding the device to
>>> DPDK, look in the docs.
>>>
>>> Regards,
>>> Rami Rosen
>>>
>>>
>>>
>>> בתאריך יום ה׳, 18 באוק׳ 2018, 17:24, מאת Kushal Gautam ‏<
>>> kushal.gautam@gmail.com>:
>>>
>>>> Hi:
>>>>
>>>> I am new to DPDK and my current use case with DPDK is minimal. Thus, I
>>>> think the l2fwd type of sample application should suffice.
>>>>
>>>> Below is a portion of the output of `dpdk-devbind.py --status` command
>>>> My DPDK version is 18.08, and I am using Ubuntu 16.04 (Linux Kernel
>>>> version
>>>> 4.15.12)
>>>>
>>>> Network devices using kernel driver
>>>> ===================================
>>>> 0000:01:00.0 'I350 Gigabit Network Connection 1521' if=eno1 drv=igb
>>>> unused=igb_uio *Active*
>>>> 0000:01:00.1 'I350 Gigabit Network Connection 1521' if=eno2 drv=igb
>>>> unused=igb_uio
>>>> 0000:81:00.0 'Ethernet Controller X710 for 10GbE SFP+ 1572' if=ens1f0
>>>> drv=i40e unused=igb_uio *Active*
>>>> 0000:81:00.1 'Ethernet Controller X710 for 10GbE SFP+ 1572' if=ens1f1
>>>> drv=i40e unused=igb_uio *Active*
>>>>
>>>> I am connecting to this machine via 0000:01:00.0
>>>>
>>>> My requirement is to be able to send packets from 0000:81:00.0 to
>>>> 0000:81:00.1 and get some measurements like tx and rx times.
>>>>
>>>> I tried to run the sample app as (as shown in docs):
>>>>
>>>> ./l2fwd -n 1 -c f -- -q 8 -p 0x3
>>>>
>>>> I have an error like this:
>>>>
>>>> EAL: Detected 16 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: No free hugepages reported in hugepages-1048576kB
>>>> EAL: No free hugepages reported in hugepages-1048576kB
>>>> EAL: Probing VFIO support...
>>>> EAL: PCI device 0000:01:00.0 on NUMA socket 0
>>>> EAL:   probe driver: 8086:1521 net_e1000_igb
>>>> EAL: PCI device 0000:01:00.1 on NUMA socket 0
>>>> EAL:   probe driver: 8086:1521 net_e1000_igb
>>>> EAL: PCI device 0000:81:00.0 on NUMA socket 1
>>>> EAL:   probe driver: 8086:1572 net_i40e
>>>> EAL: PCI device 0000:81:00.1 on NUMA socket 1
>>>> EAL:   probe driver: 8086:1572 net_i40e
>>>> MAC updating enabled
>>>> EAL: Error - exiting with code: 1
>>>>   Cause: No Ethernet ports - bye
>>>>
>>>> I did not understand the usage of port mask in this context.
>>>>
>>>> Some inputs on this would be very helpful.
>>>>
>>>> Regards,
>>>> Kushal.
>>>>
>>>