Re: [dpdk-dev] [PATCH] lib/cryptodev: fix driver name comparison

[Anoob Joseph <anoobj@marvell.com>]

Hi Fiona, Akhil,

> -----Original Message-----
> From: dev <dev-bounces@dpdk.org> On Behalf Of Trahe, Fiona
> Sent: Thursday, February 28, 2019 8:00 PM
> To: Akhil Goyal <akhil.goyal@nxp.com>; Anoob Joseph
> <anoobj@marvell.com>; Doherty, Declan <declan.doherty@intel.com>; De
> Lara Guarch, Pablo <pablo.de.lara.guarch@intel.com>; Yigit, Ferruh
> <ferruh.yigit@intel.com>; Thomas Monjalon <thomas@monjalon.net>
> Cc: Jerin Jacob Kollanukkaran <jerinj@marvell.com>; Narayana Prasad Raju
> Athreya <pathreya@marvell.com>; dev@dpdk.org; Ankur Dwivedi
> <adwivedi@marvell.com>; Trahe, Fiona <fiona.trahe@intel.com>
> Subject: Re: [dpdk-dev] [PATCH] lib/cryptodev: fix driver name comparison
> 
> Hi Akhil, Anoob,
> 
> > -----Original Message-----
> > From: Akhil Goyal [mailto:akhil.goyal@nxp.com]
> > Sent: Thursday, February 28, 2019 10:20 AM
> > To: Anoob Joseph <anoobj@marvell.com>; Trahe, Fiona
> > <fiona.trahe@intel.com>; Doherty, Declan <declan.doherty@intel.com>;
> > De Lara Guarch, Pablo <pablo.de.lara.guarch@intel.com>; Yigit, Ferruh
> > <ferruh.yigit@intel.com>; Thomas Monjalon <thomas@monjalon.net>
> > Cc: Jerin Jacob Kollanukkaran <jerinj@marvell.com>; Narayana Prasad
> > Raju Athreya <pathreya@marvell.com>; dev@dpdk.org; Ankur Dwivedi
> > <adwivedi@marvell.com>
> > Subject: Re: [dpdk-dev] [PATCH] lib/cryptodev: fix driver name
> > comparison
> >
> >
> >
> > On 2/28/2019 2:57 PM, Anoob Joseph wrote:
> > > Hi Akhil,
> > >
> > > Please see inline.
> > >
> > > Thanks,
> > > Anoob
> > >
> > >> -----Original Message-----
> > >> From: Akhil Goyal <akhil.goyal@nxp.com>
> > >> Sent: Thursday, February 28, 2019 2:22 PM
> > >> To: Anoob Joseph <anoobj@marvell.com>; Trahe, Fiona
> > >> <fiona.trahe@intel.com>; Doherty, Declan
> > >> <declan.doherty@intel.com>; De Lara Guarch, Pablo
> > >> <pablo.de.lara.guarch@intel.com>; Yigit, Ferruh
> > >> <ferruh.yigit@intel.com>; Thomas Monjalon <thomas@monjalon.net>
> > >> Cc: Jerin Jacob Kollanukkaran <jerinj@marvell.com>; Narayana Prasad
> > >> Raju Athreya <pathreya@marvell.com>; dev@dpdk.org; Ankur Dwivedi
> > >> <adwivedi@marvell.com>
> > >> Subject: Re: [dpdk-dev] [PATCH] lib/cryptodev: fix driver name
> > >> comparison
> > >>
> > >> Hi Anoob,
> > >>
> > >> On 2/28/2019 12:18 PM, Anoob Joseph wrote:
> > >>> Hi Akhil, Declan, Pablo,
> > >>>
> > >>> Can you review this patch and share your thoughts?
> > >>>
> > >>> Thanks,
> > >>> Anoob
> > >>>
> > >>>> -----Original Message-----
> > >>>> From: Trahe, Fiona <fiona.trahe@intel.com>
> > >>>> Sent: Monday, February 25, 2019 5:22 PM
> > >>>> To: Anoob Joseph <anoobj@marvell.com>; Akhil Goyal
> > >>>> <akhil.goyal@nxp.com>; Doherty, Declan
> > >>>> <declan.doherty@intel.com>;
> > >> De
> > >>>> Lara Guarch, Pablo <pablo.de.lara.guarch@intel.com>; Yigit,
> > >>>> Ferruh <ferruh.yigit@intel.com>; Thomas Monjalon
> > >>>> <thomas@monjalon.net>
> > >>>> Cc: Jerin Jacob Kollanukkaran <jerinj@marvell.com>; Narayana
> > >>>> Prasad Raju Athreya <pathreya@marvell.com>; dev@dpdk.org;
> Ankur
> > >>>> Dwivedi <adwivedi@marvell.com>
> > >>>> Subject: RE: [PATCH] lib/cryptodev: fix driver name comparison
> > >>>>
> > >>>> Hi Anoob
> > >>>>
> > >>>>> -----Original Message-----
> > >>>>> From: Anoob Joseph [mailto:anoobj@marvell.com]
> > >>>>> Sent: Saturday, February 23, 2019 6:12 AM
> > >>>>> To: Trahe, Fiona <fiona.trahe@intel.com>; Akhil Goyal
> > >>>>> <akhil.goyal@nxp.com>; Doherty, Declan
> > >>>>> <declan.doherty@intel.com>; De Lara Guarch, Pablo
> > >>>>> <pablo.de.lara.guarch@intel.com>; Yigit, Ferruh
> > >>>>> <ferruh.yigit@intel.com>; Thomas Monjalon
> <thomas@monjalon.net>
> > >>>>> Cc: Jerin Jacob Kollanukkaran <jerinj@marvell.com>; Narayana
> > >>>>> Prasad Raju Athreya <pathreya@marvell.com>; dev@dpdk.org;
> Ankur
> > >>>>> Dwivedi <adwivedi@marvell.com>
> > >>>>> Subject: RE: [PATCH] lib/cryptodev: fix driver name comparison
> > >>>>>
> > >>>>> Hi Fiona,
> > >>>>>
> > >>>>>> -----Original Message-----
> > >>>>>> From: Trahe, Fiona <fiona.trahe@intel.com>
> > >>>>>> Sent: Friday, February 22, 2019 9:09 PM
> > >>>>>> To: Anoob Joseph <anoobj@marvell.com>; Akhil Goyal
> > >>>>>> <akhil.goyal@nxp.com>; Doherty, Declan
> > >> <declan.doherty@intel.com>;
> > >>>>>> De Lara Guarch, Pablo <pablo.de.lara.guarch@intel.com>
> > >>>>>> Cc: Jerin Jacob Kollanukkaran <jerinj@marvell.com>; Narayana
> > >>>>>> Prasad Raju Athreya <pathreya@marvell.com>; dev@dpdk.org;
> Ankur
> > >>>>>> Dwivedi <adwivedi@marvell.com>; Trahe, Fiona
> > >>>>>> <fiona.trahe@intel.com>
> > >>>>>> Subject: RE: [PATCH] lib/cryptodev: fix driver name comparison
> > >>>>>>
> > >>>>>> Hi Anoob,
> > >>>>>>
> > >>>>>>>>>> @@ -542,8 +543,8 @@ rte_cryptodev_get_dev_id(const char
> > >>>> *name)
> > >>>>>>>>>>    		return -1;
> > >>>>>>>>>>
> > >>>>>>>>>>    	for (i = 0; i < cryptodev_globals.nb_devs; i++)
> > >>>>>>>>>> -		if ((strcmp(cryptodev_globals.devs[i].data-
> >name,
> > >>>> name)
> > >>>>>>>>>> -				== 0) &&
> > >>>>>>>>>> +		if ((strncmp(cryptodev_globals.devs[i].data-
> >name,
> > >>>>>> name,
> > >>>>>>>>>> +
> 	RTE_CRYPTODEV_NAME_MAX_LEN)
> > >> consider using "strlen(name) + 1" instead of
> > >> RTE_CRYPTODEV_NAME_MAX_LEN.
> > >> This will not cause any ABI breakage in my opinion and and will
> > >> check till we get a null terminated string in both the strings.
> > >> What say?
> > > [Anoob] In that  case, I'll restrict the patch to two places.
> > > Wherever strlen(name) is used, I'll make it
> > strlen(name)+1. I won't touch strcmp ones as that would work as is. Shall I
> prepare a v2?
> > I think it should be fine.
> >
> > Fiona,
> > Any comments?
> [Fiona] Good idea. That should be ok.

[Anoob] Another thought. If we are fine with doing strlen of input buffer, then using strcmp would also do. That way the usage also would be uniform in the file.

Thanks,
Anoob