[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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at hdi Mor at dm@nd B at die
>>> >>>
>>> >>
>>> >
>>> >
>>> > --
>>> > M at hdi Mor at dm@nd B at die
>>>
>>>
>>>
>>> --
>>> Andriy Berestovskyy
>>>
>>
>>
>>
>> --
>> M at hdi Mor at dm@nd B at die
>>
>
>
>
> --
> M at hdi Mor at dm@nd B at die
>



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