Hello Anoob,

Regards
Sunil Kumar

> -----Original Message-----
> From: Joseph, Anoob [mailto:anoob.jos...@caviumnetworks.com]
> Sent: Thursday, June 28, 2018 4:13 PM
> To: Sunil Kumar Kori <sunil.k...@nxp.com>; Bruce Richardson
> <bruce.richard...@intel.com>; Jerin Jacob
> <jerin.ja...@caviumnetworks.com>; Pablo de Lara
> <pablo.de.lara.gua...@intel.com>
> Cc: Hemant Agrawal <hemant.agra...@nxp.com>; Narayana Prasad
> <narayanaprasad.athr...@caviumnetworks.com>; Nikhil Rao
> <nikhil....@intel.com>; Pavan Nikhilesh
> <pbhagavat...@caviumnetworks.com>; dev@dpdk.org
> Subject: Re: [PATCH 01/20] eventdev: add files for eventmode helper
> 
> Hi Sunil,
> 
> On 27-06-2018 11:50, Sunil Kumar Kori wrote:
> > External Email
> >
> > Regards
> > Sunil Kumar
> >
> >> -----Original Message-----
> >> From: Anoob Joseph [mailto:anoob.jos...@caviumnetworks.com]
> >> Sent: Friday, June 8, 2018 10:54 PM
> >> To: Bruce Richardson <bruce.richard...@intel.com>; Jerin Jacob
> >> <jerin.ja...@caviumnetworks.com>; Pablo de Lara
> >> <pablo.de.lara.gua...@intel.com>
> >> Cc: Anoob Joseph <anoob.jos...@caviumnetworks.com>; Hemant Agrawal
> >> <hemant.agra...@nxp.com>; Narayana Prasad
> >> <narayanaprasad.athr...@caviumnetworks.com>; Nikhil Rao
> >> <nikhil....@intel.com>; Pavan Nikhilesh
> >> <pbhagavat...@caviumnetworks.com>; Sunil Kumar Kori
> >> <sunil.k...@nxp.com>; dev@dpdk.org
> >> Subject: [PATCH 01/20] eventdev: add files for eventmode helper
> >>
> >> Signed-off-by: Anoob Joseph <anoob.jos...@caviumnetworks.com>
> >> ---
> >>   lib/librte_eventdev/Makefile                        | 2 ++
> >>   lib/librte_eventdev/rte_eventmode_helper.c          | 7 +++++++
> >>   lib/librte_eventdev/rte_eventmode_helper.h          | 6 ++++++
> >>   lib/librte_eventdev/rte_eventmode_helper_internal.h | 6 ++++++
> >>   4 files changed, 21 insertions(+)
> >>   create mode 100644 lib/librte_eventdev/rte_eventmode_helper.c
> >>   create mode 100644 lib/librte_eventdev/rte_eventmode_helper.h
> >>   create mode 100644
> >> lib/librte_eventdev/rte_eventmode_helper_internal.h
> >>
> > Having a separate helper library to configure eventdev may be a
> > overhead to the application as application needs to understand main DPDK API
> as well as helper routines.
> > It can be kept in application as a separate file.
> For one application we could add a new file, but if we are to enable event 
> mode
> with multiple applications, wouldn't this be duplication of lot of code?
> Considering that I haven't added the required parsing routines, the code
> additions in one application to make it eventdriven would be huge.
> 
> I do agree that making this as a library poses its own challenges, but do you 
> have
> something better in mind? Another option we can think of is making all these
> changes part of some common headers and then each application can include
> and start using these functions. I'm fine with any approach, but we need to
> consider making at-least l3fwd & ipsec-secgw also event driven.
> 
With this approach, following may be the challenges:
1. Documentation will be required for user to use eventdev helper library.
2. Helper library should cater all the generic use cases which can be catered 
from rte_eventdev_*** library.
    If not, supported configuration/use cases should also be documented and 
should be future evolving with eventdev library enhancements. 


> Thanks,
> Anoob

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