Re: [EXT] Re: [PATCH] eventdev: fix max link profiles info

[Bruce Richardson <bruce.richardson@intel.com>]

On Tue, Oct 03, 2023 at 05:03:28PM +0000, Jerin Jacob Kollanukkaran wrote:
> 
> 
> > -----Original Message-----
> > From: Bruce Richardson <bruce.richardson@intel.com>
> > Sent: Tuesday, October 3, 2023 10:19 PM
> > To: Pavan Nikhilesh Bhagavatula <pbhagavatula@marvell.com>
> > Cc: Jerin Jacob Kollanukkaran <jerinj@marvell.com>; Abdullah Sevincer
> > <abdullah.sevincer@intel.com>; Hemant Agrawal
> > <hemant.agrawal@nxp.com>; Sachin Saxena <sachin.saxena@nxp.com>;
> > Mattias Rönnblom <mattias.ronnblom@ericsson.com>; Liang Ma
> > <liangma@liangbit.com>; Peter Mccarthy <peter.mccarthy@intel.com>; Harry
> > van Haaren <harry.van.haaren@intel.com>; dev@dpdk.org
> > Subject: [EXT] Re: [PATCH] eventdev: fix max link profiles info
> > 
> > External Email
> > 
> > ----------------------------------------------------------------------
> > On Tue, Oct 03, 2023 at 08:55:35PM +0530, pbhagavatula@marvell.com
> > wrote:
> > > From: Pavan Nikhilesh <pbhagavatula@marvell.com>
> > >
> > > Since most of the drivers overwrite the info structure passed from the
> > > common layer it is not possible to set defaults in
> > > ``rte_event_dev_info_get`` API.
> > > Initialize default max_profiles_per_port in the driver layer.
> > >
> > > Fixes: 162aa4e1b479 ("eventdev: introduce link profiles")
> > >
> > > Signed-off-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
> > > ---
> > > Please squash to 162aa4e1b479
> > >
> > Just wondering, is another valid approach to check the return value from the
> > driver callback and set max_profiles to 1 if it's set to zero by the driver? That
> > would save modifying all drivers and probably still fix any issues. [I'm assuming
> > that max_profiles == 0 is invalid, and that every device by default should report
> > "1" as supported]
> 
> I can think of three options
> 
> 1)Change max_profile to max_profiles_minus_one as name

Or call it "additional_profiles"?

> 2)In generic info_get, fix up max_profile as one if max_profile is zero after PMD callback +  https://patches.dpdk.org/project/dpdk/patch/20231003150829.8257-1-pbhagavatula@marvell.com/
> 3) Or Keep as this patch.
> 
> Looks like (1) and (2) not very clean. I think, we can keep as (3) if you don't have strong opinion.
> 

No, no strong opinions.

/Bruce