Re: [dpdk-dev] L3fwd mode in testpmd

From: "Ananyev, Konstantin" <konstantin.ananyev@intel.com>
To: Stanislaw Kardach <kda@semihalf.com>,
	Honnappa Nagarahalli <Honnappa.Nagarahalli@arm.com>
Cc: "Richardson, Bruce" <bruce.richardson@intel.com>,
	"Yigit, Ferruh" <ferruh.yigit@intel.com>,
	Stephen Hemminger <stephen@networkplumber.org>,
	Jerin Jacob <jerinjacobk@gmail.com>,
	Kathleen Capella <Kathleen.Capella@arm.com>,
	"thomas@monjalon.net" <thomas@monjalon.net>,
	"dev@dpdk.org" <dev@dpdk.org>,
	Dharmik Thakkar <Dharmik.Thakkar@arm.com>,
	Ruifeng Wang <Ruifeng.Wang@arm.com>,
	"david.marchand@redhat.com" <david.marchand@redhat.com>,
	"jerinj@marvell.com" <jerinj@marvell.com>,
	"hemant.agrawal@nxp.com" <hemant.agrawal@nxp.com>,
	Stephen Hemminger <sthemmin@microsoft.com>, nd <nd@arm.com>
Subject: Re: [dpdk-dev] L3fwd mode in testpmd
Date: Thu, 29 Apr 2021 08:31:03 +0000	[thread overview]
Message-ID: <DM6PR11MB4491DE19612B33348F21B95B9A5F9@DM6PR11MB4491.namprd11.prod.outlook.com> (raw)
In-Reply-To: <20210429074945.alquywrvyxjdezqi@toster>

Hi Stanislaw,

> 
> On Wed, Apr 28, 2021 at 09:44:54PM +0000, Honnappa Nagarahalli wrote:
> <snip>
> > [Honnappa] Sorry, I do not understand this. I see that vector code is under compile time flag as below
> >
> > #if defined RTE_ARCH_X86 || defined __ARM_NEON
> >                         l3fwd_em_send_packets(nb_rx, pkts_burst,
> >                                                         portid, qconf);
> > #else
> >                        l3fwd_em_no_opt_send_packets(nb_rx, pkts_burst,
> >                                                         portid, qconf);
> > #endif
> Take a look at the ifdef tree at the top of l3fwd_em.c, here:
> http://git.dpdk.org/dpdk/tree/examples/l3fwd/l3fwd_em.c#n218
> 
> #if defined(__SSE2__)
> ...
> #else
> #error No vector engine (SSE, NEON, ALTIVEC) available, check your toolchain
> #endif
> 

I think it is just a flaw and needs to be fixed.
Patch would help here 😊
Konstantin