[dpdk-users] how to Read(Write) from(to) via lcores in dpdk regardless of NIC

[dpdk-users] how to Read(Write) from(to) via lcores in dpdk regardless of NIC

[Mahdi Moradmand Badie]

Dear All,
I am Mahdi and I am new in DPDK,
I wanna generate for example 3 different packets in core0 as master write
it to share memory (L3), then core1 as slave read this packets, change them
with for example function1 and write again in share memory (L3) and finally
check the result with whatever I expect.
The most important thing is that I don't wanna use NIC and I don't know for
working with cores how I can write/read to/from them, I mean with which
template and sequence???
Thanks in advance,

Re: [dpdk-users] how to Read(Write) from(to) via lcores in dpdk regardless of NIC

[Hamed Zaghaghi]

Hi Mahdi,

Why do you want to use DPDK when you don't use NIC? You can do what you
want outside of DPDK.

Regards,
Hamed Zaghaghi

On Tue, Mar 8, 2016 at 12:16 AM Mahdi Moradmand Badie <
mahdi.mbadie@gmail.com> wrote:

> Dear All,
> I am Mahdi and I am new in DPDK,
> I wanna generate for example 3 different packets in core0 as master write
> it to share memory (L3), then core1 as slave read this packets, change them
> with for example function1 and write again in share memory (L3) and finally
> check the result with whatever I expect.
> The most important thing is that I don't wanna use NIC and I don't know for
> working with cores how I can write/read to/from them, I mean with which
> template and sequence???
> Thanks in advance,
>

Re: [dpdk-users] how to Read(Write) from(to) via lcores in dpdk regardless of NIC

[Mahdi Moradmand Badie]

Dear Hamed,

First of all thank you so much for your kindly reply,

It's the primary part of the big project, in order to be more familiar with
DPDK,
I have to implement the mentioned framework by use of DPDK,
And finally we wanna implement the cache locking approach (via help of
features like Cache Allocation Technology(CAT), Cache Monitoring Technology
(CMT)) in Xeon processor (my supervisor told me this simple exercise
will be helpful to do the final part) in such a way we could dedicate a
specific part of shared memory (L3) to each core which the other don't
access to it.
Obviously using of DPDK with Xeon which both are from "Intel", is
considered as strength point.

I hope this was more clear :)

On 7 March 2016 at 23:56, Hamed Zaghaghi <hamed.zaghaghi@gmail.com> wrote:

> Hi Mahdi,
>
> Why do you want to use DPDK when you don't use NIC? You can do what you
> want outside of DPDK.
>
> Regards,
> Hamed Zaghaghi
>
> On Tue, Mar 8, 2016 at 12:16 AM Mahdi Moradmand Badie <
> mahdi.mbadie@gmail.com> wrote:
>
>> Dear All,
>> I am Mahdi and I am new in DPDK,
>> I wanna generate for example 3 different packets in core0 as master write
>> it to share memory (L3), then core1 as slave read this packets, change
>> them
>> with for example function1 and write again in share memory (L3) and
>> finally
>> check the result with whatever I expect.
>> The most important thing is that I don't wanna use NIC and I don't know
>> for
>> working with cores how I can write/read to/from them, I mean with which
>> template and sequence???
>> Thanks in advance,
>>
>


-- 
M@hdi Mor@dm@nd B@die

Re: [dpdk-users] how to Read(Write) from(to) via lcores in dpdk regardless of NIC

[Hamed Zaghaghi]

Hi,

If I understood well you need to do these tasks:
1. Packet crafting (I think that DPDK has no functions for this task)
2. Store packets (DPDK has (rte_mbuf)[
http://dpdk.org/doc/api/rte__mbuf_8h.html])
3. Share between lcores (DPDK offers rte_ring)



On Tue, Mar 8, 2016 at 8:45 AM Mahdi Moradmand Badie <mahdi.mbadie@gmail.com>
wrote:

> Dear Hamed,
>
> First of all thank you so much for your kindly reply,
>
> It's the primary part of the big project, in order to be more familiar
> with DPDK,
> I have to implement the mentioned framework by use of DPDK,
> And finally we wanna implement the cache locking approach (via help of
> features like Cache Allocation Technology(CAT), Cache Monitoring Technology
> (CMT)) in Xeon processor (my supervisor told me this simple exercise
> will be helpful to do the final part) in such a way we could dedicate a
> specific part of shared memory (L3) to each core which the other don't
> access to it.
> Obviously using of DPDK with Xeon which both are from "Intel", is
> considered as strength point.
>
> I hope this was more clear :)
>
> On 7 March 2016 at 23:56, Hamed Zaghaghi <hamed.zaghaghi@gmail.com> wrote:
>
>> Hi Mahdi,
>>
>> Why do you want to use DPDK when you don't use NIC? You can do what you
>> want outside of DPDK.
>>
>> Regards,
>> Hamed Zaghaghi
>>
>> On Tue, Mar 8, 2016 at 12:16 AM Mahdi Moradmand Badie <
>> mahdi.mbadie@gmail.com> wrote:
>>
>>> Dear All,
>>> I am Mahdi and I am new in DPDK,
>>> I wanna generate for example 3 different packets in core0 as master write
>>> it to share memory (L3), then core1 as slave read this packets, change
>>> them
>>> with for example function1 and write again in share memory (L3) and
>>> finally
>>> check the result with whatever I expect.
>>> The most important thing is that I don't wanna use NIC and I don't know
>>> for
>>> working with cores how I can write/read to/from them, I mean with which
>>> template and sequence???
>>> Thanks in advance,
>>>
>>
>
>
> --
> M@hdi Mor@dm@nd B@die
>

Re: [dpdk-users] how to Read(Write) from(to) via lcores in dpdk regardless of NIC

[Mahdi Moradmand Badie]

I wanna create for example 3 different packets in core_0 as master and
store them one by one in share memory(rte_ring),
then the core_1 as slave read them and do function on them (ex. P1+P2+P3)
and again store in share memory, finally the core_0 read the packets from
share memory and compare them with whatever expected :)
As I said and you mentioned is the same? :)

On 8 March 2016 at 00:35, Hamed Zaghaghi <hamed.zaghaghi@gmail.com> wrote:

> Hi,
>
> If I understood well you need to do these tasks:
> 1. Packet crafting (I think that DPDK has no functions for this task)
> 2. Store packets (DPDK has (rte_mbuf)[
> http://dpdk.org/doc/api/rte__mbuf_8h.html])
> 3. Share between lcores (DPDK offers rte_ring)
>
>
>
> On Tue, Mar 8, 2016 at 8:45 AM Mahdi Moradmand Badie <
> mahdi.mbadie@gmail.com> wrote:
>
>> Dear Hamed,
>>
>> First of all thank you so much for your kindly reply,
>>
>> It's the primary part of the big project, in order to be more familiar
>> with DPDK,
>> I have to implement the mentioned framework by use of DPDK,
>> And finally we wanna implement the cache locking approach (via help of
>> features like Cache Allocation Technology(CAT), Cache Monitoring Technology
>> (CMT)) in Xeon processor (my supervisor told me this simple exercise
>> will be helpful to do the final part) in such a way we could dedicate a
>> specific part of shared memory (L3) to each core which the other don't
>> access to it.
>> Obviously using of DPDK with Xeon which both are from "Intel", is
>> considered as strength point.
>>
>> I hope this was more clear :)
>>
>> On 7 March 2016 at 23:56, Hamed Zaghaghi <hamed.zaghaghi@gmail.com>
>> wrote:
>>
>>> Hi Mahdi,
>>>
>>> Why do you want to use DPDK when you don't use NIC? You can do what you
>>> want outside of DPDK.
>>>
>>> Regards,
>>> Hamed Zaghaghi
>>>
>>> On Tue, Mar 8, 2016 at 12:16 AM Mahdi Moradmand Badie <
>>> mahdi.mbadie@gmail.com> wrote:
>>>
>>>> Dear All,
>>>> I am Mahdi and I am new in DPDK,
>>>> I wanna generate for example 3 different packets in core0 as master
>>>> write
>>>> it to share memory (L3), then core1 as slave read this packets, change
>>>> them
>>>> with for example function1 and write again in share memory (L3) and
>>>> finally
>>>> check the result with whatever I expect.
>>>> The most important thing is that I don't wanna use NIC and I don't know
>>>> for
>>>> working with cores how I can write/read to/from them, I mean with which
>>>> template and sequence???
>>>> Thanks in advance,
>>>>
>>>
>>
>>
>> --
>> M@hdi Mor@dm@nd B@die
>>
>


-- 
M@hdi Mor@dm@nd B@die

Re: [dpdk-users] [dpdk-dev] how to Read(Write) from(to) via lcores in dpdk regardless of NIC

[Andriy Berestovskyy]

Hi Mahdi,
Looks like the DPDK's rte_distributor is the right tool for your task.
Please have a look at:
http://dpdk.org/doc/guides/prog_guide/packet_distrib_lib.html

There is also the Distributor Sample Application in DPDK:
http://dpdk.org/doc/guides/sample_app_ug/dist_app.html


Please do not cross-post to dev@ mailing list.

Regards,
Andriy

On Tue, Mar 8, 2016 at 6:41 AM, Mahdi Moradmand Badie
<mahdi.mbadie@gmail.com> wrote:
> I wanna create for example 3 different packets in core_0 as master and
> store them one by one in share memory(rte_ring),
> then the core_1 as slave read them and do function on them (ex. P1+P2+P3)
> and again store in share memory, finally the core_0 read the packets from
> share memory and compare them with whatever expected :)
> As I said and you mentioned is the same? :)
>
> On 8 March 2016 at 00:35, Hamed Zaghaghi <hamed.zaghaghi@gmail.com> wrote:
>
>> Hi,
>>
>> If I understood well you need to do these tasks:
>> 1. Packet crafting (I think that DPDK has no functions for this task)
>> 2. Store packets (DPDK has (rte_mbuf)[
>> http://dpdk.org/doc/api/rte__mbuf_8h.html])
>> 3. Share between lcores (DPDK offers rte_ring)
>>
>>
>>
>> On Tue, Mar 8, 2016 at 8:45 AM Mahdi Moradmand Badie <
>> mahdi.mbadie@gmail.com> wrote:
>>
>>> Dear Hamed,
>>>
>>> First of all thank you so much for your kindly reply,
>>>
>>> It's the primary part of the big project, in order to be more familiar
>>> with DPDK,
>>> I have to implement the mentioned framework by use of DPDK,
>>> And finally we wanna implement the cache locking approach (via help of
>>> features like Cache Allocation Technology(CAT), Cache Monitoring Technology
>>> (CMT)) in Xeon processor (my supervisor told me this simple exercise
>>> will be helpful to do the final part) in such a way we could dedicate a
>>> specific part of shared memory (L3) to each core which the other don't
>>> access to it.
>>> Obviously using of DPDK with Xeon which both are from "Intel", is
>>> considered as strength point.
>>>
>>> I hope this was more clear :)
>>>
>>> On 7 March 2016 at 23:56, Hamed Zaghaghi <hamed.zaghaghi@gmail.com>
>>> wrote:
>>>
>>>> Hi Mahdi,
>>>>
>>>> Why do you want to use DPDK when you don't use NIC? You can do what you
>>>> want outside of DPDK.
>>>>
>>>> Regards,
>>>> Hamed Zaghaghi
>>>>
>>>> On Tue, Mar 8, 2016 at 12:16 AM Mahdi Moradmand Badie <
>>>> mahdi.mbadie@gmail.com> wrote:
>>>>
>>>>> Dear All,
>>>>> I am Mahdi and I am new in DPDK,
>>>>> I wanna generate for example 3 different packets in core0 as master
>>>>> write
>>>>> it to share memory (L3), then core1 as slave read this packets, change
>>>>> them
>>>>> with for example function1 and write again in share memory (L3) and
>>>>> finally
>>>>> check the result with whatever I expect.
>>>>> The most important thing is that I don't wanna use NIC and I don't know
>>>>> for
>>>>> working with cores how I can write/read to/from them, I mean with which
>>>>> template and sequence???
>>>>> Thanks in advance,
>>>>>
>>>>
>>>
>>>
>>> --
>>> M@hdi Mor@dm@nd B@die
>>>
>>
>
>
> --
> M@hdi Mor@dm@nd B@die



-- 
Andriy Berestovskyy

Re: [dpdk-users] [dpdk-dev] how to Read(Write) from(to) via lcores in dpdk regardless of NIC

[Mahdi Moradmand Badie]

Another issue, ;)
How I could access to the share memory cache of lcores (L3), the rte_ring
is exactly that??

On 8 March 2016 at 13:08, Mahdi Moradmand Badie <mahdi.mbadie@gmail.com>
wrote:

> Dear Andriy,
> Sorry for interrupt again,
> As I see in rte_distributor, it is using rte_eth (ethernet), while I
> wanna without using any NIC because I don't have it on my personal computer
> :)
>
> On 8 March 2016 at 11:49, Mahdi Moradmand Badie <mahdi.mbadie@gmail.com>
> wrote:
>
>> Thanks so much Andriy,
>> Regarding cross-post, yes you are right sorry about that and of course
>> afterwards.
>>
>> On 8 March 2016 at 03:17, Andriy Berestovskyy <aber@semihalf.com> wrote:
>>
>>> Hi Mahdi,
>>> Looks like the DPDK's rte_distributor is the right tool for your task.
>>> Please have a look at:
>>> http://dpdk.org/doc/guides/prog_guide/packet_distrib_lib.html
>>>
>>> There is also the Distributor Sample Application in DPDK:
>>> http://dpdk.org/doc/guides/sample_app_ug/dist_app.html
>>>
>>>
>>> Please do not cross-post to dev@ mailing list.
>>>
>>> Regards,
>>> Andriy
>>>
>>> On Tue, Mar 8, 2016 at 6:41 AM, Mahdi Moradmand Badie
>>> <mahdi.mbadie@gmail.com> wrote:
>>> > I wanna create for example 3 different packets in core_0 as master and
>>> > store them one by one in share memory(rte_ring),
>>> > then the core_1 as slave read them and do function on them (ex.
>>> P1+P2+P3)
>>> > and again store in share memory, finally the core_0 read the packets
>>> from
>>> > share memory and compare them with whatever expected :)
>>> > As I said and you mentioned is the same? :)
>>> >
>>> > On 8 March 2016 at 00:35, Hamed Zaghaghi <hamed.zaghaghi@gmail.com>
>>> wrote:
>>> >
>>> >> Hi,
>>> >>
>>> >> If I understood well you need to do these tasks:
>>> >> 1. Packet crafting (I think that DPDK has no functions for this task)
>>> >> 2. Store packets (DPDK has (rte_mbuf)[
>>> >> http://dpdk.org/doc/api/rte__mbuf_8h.html])
>>> >> 3. Share between lcores (DPDK offers rte_ring)
>>> >>
>>> >>
>>> >>
>>> >> On Tue, Mar 8, 2016 at 8:45 AM Mahdi Moradmand Badie <
>>> >> mahdi.mbadie@gmail.com> wrote:
>>> >>
>>> >>> Dear Hamed,
>>> >>>
>>> >>> First of all thank you so much for your kindly reply,
>>> >>>
>>> >>> It's the primary part of the big project, in order to be more
>>> familiar
>>> >>> with DPDK,
>>> >>> I have to implement the mentioned framework by use of DPDK,
>>> >>> And finally we wanna implement the cache locking approach (via help
>>> of
>>> >>> features like Cache Allocation Technology(CAT), Cache Monitoring
>>> Technology
>>> >>> (CMT)) in Xeon processor (my supervisor told me this simple exercise
>>> >>> will be helpful to do the final part) in such a way we could
>>> dedicate a
>>> >>> specific part of shared memory (L3) to each core which the other
>>> don't
>>> >>> access to it.
>>> >>> Obviously using of DPDK with Xeon which both are from "Intel", is
>>> >>> considered as strength point.
>>> >>>
>>> >>> I hope this was more clear :)
>>> >>>
>>> >>> On 7 March 2016 at 23:56, Hamed Zaghaghi <hamed.zaghaghi@gmail.com>
>>> >>> wrote:
>>> >>>
>>> >>>> Hi Mahdi,
>>> >>>>
>>> >>>> Why do you want to use DPDK when you don't use NIC? You can do what
>>> you
>>> >>>> want outside of DPDK.
>>> >>>>
>>> >>>> Regards,
>>> >>>> Hamed Zaghaghi
>>> >>>>
>>> >>>> On Tue, Mar 8, 2016 at 12:16 AM Mahdi Moradmand Badie <
>>> >>>> mahdi.mbadie@gmail.com> wrote:
>>> >>>>
>>> >>>>> Dear All,
>>> >>>>> I am Mahdi and I am new in DPDK,
>>> >>>>> I wanna generate for example 3 different packets in core0 as master
>>> >>>>> write
>>> >>>>> it to share memory (L3), then core1 as slave read this packets,
>>> change
>>> >>>>> them
>>> >>>>> with for example function1 and write again in share memory (L3) and
>>> >>>>> finally
>>> >>>>> check the result with whatever I expect.
>>> >>>>> The most important thing is that I don't wanna use NIC and I don't
>>> know
>>> >>>>> for
>>> >>>>> working with cores how I can write/read to/from them, I mean with
>>> which
>>> >>>>> template and sequence???
>>> >>>>> Thanks in advance,
>>> >>>>>
>>> >>>>
>>> >>>
>>> >>>
>>> >>> --
>>> >>> M@hdi Mor@dm@nd B@die
>>> >>>
>>> >>
>>> >
>>> >
>>> > --
>>> > M@hdi Mor@dm@nd B@die
>>>
>>>
>>>
>>> --
>>> Andriy Berestovskyy
>>>
>>
>>
>>
>> --
>> M@hdi Mor@dm@nd B@die
>>
>
>
>
> --
> M@hdi Mor@dm@nd B@die
>



-- 
M@hdi Mor@dm@nd B@die

Re: [dpdk-users] [dpdk-dev] how to Read(Write) from(to) via lcores in dpdk regardless of NIC

[Andriy Berestovskyy]

Mahdi,
1. Sure, the rte_ring is another good way to communicate between the
lcores. If you have just one "worker" lcore or you do not care about
packet ordering, you might prefer using rte_ring over the
rte_distributor.


2. For the simplicity, you might assume that any of your shared
structures (rte_ring or rte_distributor) eventually get into the
cache.

Andriy

On Tue, Mar 8, 2016 at 10:49 PM, Mahdi Moradmand Badie
<mahdi.mbadie@gmail.com> wrote:
> Another issue, ;)
> How I could access to the share memory cache of lcores (L3), the rte_ring
> is exactly that??
>
> On 8 March 2016 at 13:08, Mahdi Moradmand Badie <mahdi.mbadie@gmail.com>
> wrote:
>
>> Dear Andriy,
>> Sorry for interrupt again,
>> As I see in rte_distributor, it is using rte_eth (ethernet), while I
>> wanna without using any NIC because I don't have it on my personal computer
>> :)
>>
>> On 8 March 2016 at 11:49, Mahdi Moradmand Badie <mahdi.mbadie@gmail.com>
>> wrote:
>>
>>> Thanks so much Andriy,
>>> Regarding cross-post, yes you are right sorry about that and of course
>>> afterwards.
>>>
>>> On 8 March 2016 at 03:17, Andriy Berestovskyy <aber@semihalf.com> wrote:
>>>
>>>> Hi Mahdi,
>>>> Looks like the DPDK's rte_distributor is the right tool for your task.
>>>> Please have a look at:
>>>> http://dpdk.org/doc/guides/prog_guide/packet_distrib_lib.html
>>>>
>>>> There is also the Distributor Sample Application in DPDK:
>>>> http://dpdk.org/doc/guides/sample_app_ug/dist_app.html
>>>>
>>>>
>>>> Please do not cross-post to dev@ mailing list.
>>>>
>>>> Regards,
>>>> Andriy
>>>>
>>>> On Tue, Mar 8, 2016 at 6:41 AM, Mahdi Moradmand Badie
>>>> <mahdi.mbadie@gmail.com> wrote:
>>>> > I wanna create for example 3 different packets in core_0 as master and
>>>> > store them one by one in share memory(rte_ring),
>>>> > then the core_1 as slave read them and do function on them (ex.
>>>> P1+P2+P3)
>>>> > and again store in share memory, finally the core_0 read the packets
>>>> from
>>>> > share memory and compare them with whatever expected :)
>>>> > As I said and you mentioned is the same? :)
>>>> >
>>>> > On 8 March 2016 at 00:35, Hamed Zaghaghi <hamed.zaghaghi@gmail.com>
>>>> wrote:
>>>> >
>>>> >> Hi,
>>>> >>
>>>> >> If I understood well you need to do these tasks:
>>>> >> 1. Packet crafting (I think that DPDK has no functions for this task)
>>>> >> 2. Store packets (DPDK has (rte_mbuf)[
>>>> >> http://dpdk.org/doc/api/rte__mbuf_8h.html])
>>>> >> 3. Share between lcores (DPDK offers rte_ring)
>>>> >>
>>>> >>
>>>> >>
>>>> >> On Tue, Mar 8, 2016 at 8:45 AM Mahdi Moradmand Badie <
>>>> >> mahdi.mbadie@gmail.com> wrote:
>>>> >>
>>>> >>> Dear Hamed,
>>>> >>>
>>>> >>> First of all thank you so much for your kindly reply,
>>>> >>>
>>>> >>> It's the primary part of the big project, in order to be more
>>>> familiar
>>>> >>> with DPDK,
>>>> >>> I have to implement the mentioned framework by use of DPDK,
>>>> >>> And finally we wanna implement the cache locking approach (via help
>>>> of
>>>> >>> features like Cache Allocation Technology(CAT), Cache Monitoring
>>>> Technology
>>>> >>> (CMT)) in Xeon processor (my supervisor told me this simple exercise
>>>> >>> will be helpful to do the final part) in such a way we could
>>>> dedicate a
>>>> >>> specific part of shared memory (L3) to each core which the other
>>>> don't
>>>> >>> access to it.
>>>> >>> Obviously using of DPDK with Xeon which both are from "Intel", is
>>>> >>> considered as strength point.
>>>> >>>
>>>> >>> I hope this was more clear :)
>>>> >>>
>>>> >>> On 7 March 2016 at 23:56, Hamed Zaghaghi <hamed.zaghaghi@gmail.com>
>>>> >>> wrote:
>>>> >>>
>>>> >>>> Hi Mahdi,
>>>> >>>>
>>>> >>>> Why do you want to use DPDK when you don't use NIC? You can do what
>>>> you
>>>> >>>> want outside of DPDK.
>>>> >>>>
>>>> >>>> Regards,
>>>> >>>> Hamed Zaghaghi
>>>> >>>>
>>>> >>>> On Tue, Mar 8, 2016 at 12:16 AM Mahdi Moradmand Badie <
>>>> >>>> mahdi.mbadie@gmail.com> wrote:
>>>> >>>>
>>>> >>>>> Dear All,
>>>> >>>>> I am Mahdi and I am new in DPDK,
>>>> >>>>> I wanna generate for example 3 different packets in core0 as master
>>>> >>>>> write
>>>> >>>>> it to share memory (L3), then core1 as slave read this packets,
>>>> change
>>>> >>>>> them
>>>> >>>>> with for example function1 and write again in share memory (L3) and
>>>> >>>>> finally
>>>> >>>>> check the result with whatever I expect.
>>>> >>>>> The most important thing is that I don't wanna use NIC and I don't
>>>> know
>>>> >>>>> for
>>>> >>>>> working with cores how I can write/read to/from them, I mean with
>>>> which
>>>> >>>>> template and sequence???
>>>> >>>>> Thanks in advance,
>>>> >>>>>
>>>> >>>>
>>>> >>>
>>>> >>>
>>>> >>> --
>>>> >>> M@hdi Mor@dm@nd B@die
>>>> >>>
>>>> >>
>>>> >
>>>> >
>>>> > --
>>>> > M@hdi Mor@dm@nd B@die
>>>>
>>>>
>>>>
>>>> --
>>>> Andriy Berestovskyy
>>>>
>>>
>>>
>>>
>>> --
>>> M@hdi Mor@dm@nd B@die
>>>
>>
>>
>>
>> --
>> M@hdi Mor@dm@nd B@die
>>
>
>
>
> --
> M@hdi Mor@dm@nd B@die



-- 
Andriy Berestovskyy

Re: [dpdk-users] [dpdk-dev] how to Read(Write) from(to) via lcores in dpdk regardless of NIC

[Andriy Berestovskyy]

Hi Mahdi,
Good to hear that you have coped with your task! ;)

CPU caches are transparent, you cannot access them directly. You might
assume that rte_ring you use is actually in a shared cache. So,
basically, there is nothing to replace, you are done.

You might want to read the big picture description of CPU caches in
this article:
http://lwn.net/Articles/252125/


Andriy

On Tue, Mar 22, 2016 at 6:33 PM, Mahdi Moradmand Badie
<mahdi.mbadie@gmail.com> wrote:
> Dear Andriy,
> I did my task with the help of rte_ring, but now I wanna replace rte_ring
> with real share cache(L3),
> May I ask you if there is any possibility in DPDK in order to do it.
> Thanks in advance,
>
> On 9 March 2016 at 05:26, Andriy Berestovskyy <aber@semihalf.com> wrote:
>>
>> Mahdi,
>> 1. Sure, the rte_ring is another good way to communicate between the
>> lcores. If you have just one "worker" lcore or you do not care about
>> packet ordering, you might prefer using rte_ring over the
>> rte_distributor.
>>
>>
>> 2. For the simplicity, you might assume that any of your shared
>> structures (rte_ring or rte_distributor) eventually get into the
>> cache.
>>
>> Andriy
>>
>> On Tue, Mar 8, 2016 at 10:49 PM, Mahdi Moradmand Badie
>> <mahdi.mbadie@gmail.com> wrote:
>> > Another issue, ;)
>> > How I could access to the share memory cache of lcores (L3), the
>> > rte_ring
>> > is exactly that??
>> >
>> > On 8 March 2016 at 13:08, Mahdi Moradmand Badie <mahdi.mbadie@gmail.com>
>> > wrote:
>> >
>> >> Dear Andriy,
>> >> Sorry for interrupt again,
>> >> As I see in rte_distributor, it is using rte_eth (ethernet), while I
>> >> wanna without using any NIC because I don't have it on my personal
>> >> computer
>> >> :)
>> >>
>> >> On 8 March 2016 at 11:49, Mahdi Moradmand Badie
>> >> <mahdi.mbadie@gmail.com>
>> >> wrote:
>> >>
>> >>> Thanks so much Andriy,
>> >>> Regarding cross-post, yes you are right sorry about that and of course
>> >>> afterwards.
>> >>>
>> >>> On 8 March 2016 at 03:17, Andriy Berestovskyy <aber@semihalf.com>
>> >>> wrote:
>> >>>
>> >>>> Hi Mahdi,
>> >>>> Looks like the DPDK's rte_distributor is the right tool for your
>> >>>> task.
>> >>>> Please have a look at:
>> >>>> http://dpdk.org/doc/guides/prog_guide/packet_distrib_lib.html
>> >>>>
>> >>>> There is also the Distributor Sample Application in DPDK:
>> >>>> http://dpdk.org/doc/guides/sample_app_ug/dist_app.html
>> >>>>
>> >>>>
>> >>>> Please do not cross-post to dev@ mailing list.
>> >>>>
>> >>>> Regards,
>> >>>> Andriy
>> >>>>
>> >>>> On Tue, Mar 8, 2016 at 6:41 AM, Mahdi Moradmand Badie
>> >>>> <mahdi.mbadie@gmail.com> wrote:
>> >>>> > I wanna create for example 3 different packets in core_0 as master
>> >>>> > and
>> >>>> > store them one by one in share memory(rte_ring),
>> >>>> > then the core_1 as slave read them and do function on them (ex.
>> >>>> P1+P2+P3)
>> >>>> > and again store in share memory, finally the core_0 read the
>> >>>> > packets
>> >>>> from
>> >>>> > share memory and compare them with whatever expected :)
>> >>>> > As I said and you mentioned is the same? :)
>> >>>> >
>> >>>> > On 8 March 2016 at 00:35, Hamed Zaghaghi <hamed.zaghaghi@gmail.com>
>> >>>> wrote:
>> >>>> >
>> >>>> >> Hi,
>> >>>> >>
>> >>>> >> If I understood well you need to do these tasks:
>> >>>> >> 1. Packet crafting (I think that DPDK has no functions for this
>> >>>> >> task)
>> >>>> >> 2. Store packets (DPDK has (rte_mbuf)[
>> >>>> >> http://dpdk.org/doc/api/rte__mbuf_8h.html])
>> >>>> >> 3. Share between lcores (DPDK offers rte_ring)
>> >>>> >>
>> >>>> >>
>> >>>> >>
>> >>>> >> On Tue, Mar 8, 2016 at 8:45 AM Mahdi Moradmand Badie <
>> >>>> >> mahdi.mbadie@gmail.com> wrote:
>> >>>> >>
>> >>>> >>> Dear Hamed,
>> >>>> >>>
>> >>>> >>> First of all thank you so much for your kindly reply,
>> >>>> >>>
>> >>>> >>> It's the primary part of the big project, in order to be more
>> >>>> familiar
>> >>>> >>> with DPDK,
>> >>>> >>> I have to implement the mentioned framework by use of DPDK,
>> >>>> >>> And finally we wanna implement the cache locking approach (via
>> >>>> >>> help
>> >>>> of
>> >>>> >>> features like Cache Allocation Technology(CAT), Cache Monitoring
>> >>>> Technology
>> >>>> >>> (CMT)) in Xeon processor (my supervisor told me this simple
>> >>>> >>> exercise
>> >>>> >>> will be helpful to do the final part) in such a way we could
>> >>>> dedicate a
>> >>>> >>> specific part of shared memory (L3) to each core which the other
>> >>>> don't
>> >>>> >>> access to it.
>> >>>> >>> Obviously using of DPDK with Xeon which both are from "Intel", is
>> >>>> >>> considered as strength point.
>> >>>> >>>
>> >>>> >>> I hope this was more clear :)
>> >>>> >>>
>> >>>> >>> On 7 March 2016 at 23:56, Hamed Zaghaghi
>> >>>> >>> <hamed.zaghaghi@gmail.com>
>> >>>> >>> wrote:
>> >>>> >>>
>> >>>> >>>> Hi Mahdi,
>> >>>> >>>>
>> >>>> >>>> Why do you want to use DPDK when you don't use NIC? You can do
>> >>>> >>>> what
>> >>>> you
>> >>>> >>>> want outside of DPDK.
>> >>>> >>>>
>> >>>> >>>> Regards,
>> >>>> >>>> Hamed Zaghaghi
>> >>>> >>>>
>> >>>> >>>> On Tue, Mar 8, 2016 at 12:16 AM Mahdi Moradmand Badie <
>> >>>> >>>> mahdi.mbadie@gmail.com> wrote:
>> >>>> >>>>
>> >>>> >>>>> Dear All,
>> >>>> >>>>> I am Mahdi and I am new in DPDK,
>> >>>> >>>>> I wanna generate for example 3 different packets in core0 as
>> >>>> >>>>> master
>> >>>> >>>>> write
>> >>>> >>>>> it to share memory (L3), then core1 as slave read this packets,
>> >>>> change
>> >>>> >>>>> them
>> >>>> >>>>> with for example function1 and write again in share memory (L3)
>> >>>> >>>>> and
>> >>>> >>>>> finally
>> >>>> >>>>> check the result with whatever I expect.
>> >>>> >>>>> The most important thing is that I don't wanna use NIC and I
>> >>>> >>>>> don't
>> >>>> know
>> >>>> >>>>> for
>> >>>> >>>>> working with cores how I can write/read to/from them, I mean
>> >>>> >>>>> with
>> >>>> which
>> >>>> >>>>> template and sequence???
>> >>>> >>>>> Thanks in advance,
>> >>>> >>>>>
>> >>>> >>>>
>> >>>> >>>
>> >>>> >>>
>> >>>> >>> --
>> >>>> >>> M@hdi Mor@dm@nd B@die
>> >>>> >>>
>> >>>> >>
>> >>>> >
>> >>>> >
>> >>>> > --
>> >>>> > M@hdi Mor@dm@nd B@die
>> >>>>
>> >>>>
>> >>>>
>> >>>> --
>> >>>> Andriy Berestovskyy
>> >>>>
>> >>>
>> >>>
>> >>>
>> >>> --
>> >>> M@hdi Mor@dm@nd B@die
>> >>>
>> >>
>> >>
>> >>
>> >> --
>> >> M@hdi Mor@dm@nd B@die
>> >>
>> >
>> >
>> >
>> > --
>> > M@hdi Mor@dm@nd B@die
>>
>>
>>
>> --
>> Andriy Berestovskyy
>
>
>
>
> --
> M@hdi Mor@dm@nd B@die



-- 
Andriy Berestovskyy