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From: Anoob Joseph <anoobj@marvell.com>
To: Thomas Monjalon <thomas@monjalon.net>
CC: Jerin Jacob Kollanukkaran <jerinj@marvell.com>, Konstantin Ananyev
 <konstantin.v.ananyev@yandex.ru>, "dev@dpdk.org" <dev@dpdk.org>, Hemant
 Agrawal <hemant.agrawal@nxp.com>, =?iso-8859-1?Q?Mattias_R=F6nnblom?=
 <mattias.ronnblom@ericsson.com>,
 "dev@dpdk.org" <dev@dpdk.org>, Olivier Matz <olivier.matz@6wind.com>,
 Stephen Hemminger <stephen@networkplumber.org>,
 "david.marchand@redhat.com" <david.marchand@redhat.com>, Akhil Goyal
 <gakhil@marvell.com>, Kiran Kumar Kokkilagadda <kirankumark@marvell.com>,
 Volodymyr Fialko <vfialko@marvell.com>
Subject: RE: [EXT] Re: [PATCH v6 06/21] pdcp: add pre and post process for UL
Thread-Topic: [EXT] Re: [PATCH v6 06/21] pdcp: add pre and post process for UL
Thread-Index: AQHZm+3/V+K2kdospka4PVvN7GN1wK+Gos3g
Date: Mon, 12 Jun 2023 05:19:17 +0000
Message-ID: <PH0PR18MB4672E1163F16FA41DEAF81F1DF54A@PH0PR18MB4672.namprd18.prod.outlook.com>
References: <20230527085910.972-1-anoobj@marvell.com>
 <20230530100158.1428-1-anoobj@marvell.com>
 <20230530100158.1428-7-anoobj@marvell.com> <2632776.BddDVKsqQX@thomas>
In-Reply-To: <2632776.BddDVKsqQX@thomas>
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Errors-To: dev-bounces@dpdk.org

Hi Thomas,

Thanks for the fix. Will check if we can have it addressed properly.

Thanks,
Anoob

> -----Original Message-----
> From: Thomas Monjalon <thomas@monjalon.net>
> Sent: Sunday, June 11, 2023 4:21 AM
> To: Akhil Goyal <gakhil@marvell.com>; Kiran Kumar Kokkilagadda
> <kirankumark@marvell.com>; Volodymyr Fialko <vfialko@marvell.com>;
> Anoob Joseph <anoobj@marvell.com>
> Cc: Jerin Jacob Kollanukkaran <jerinj@marvell.com>; Konstantin Ananyev
> <konstantin.v.ananyev@yandex.ru>; dev@dpdk.org; Hemant Agrawal
> <hemant.agrawal@nxp.com>; Mattias R=F6nnblom
> <mattias.ronnblom@ericsson.com>; dev@dpdk.org; Olivier Matz
> <olivier.matz@6wind.com>; Stephen Hemminger
> <stephen@networkplumber.org>; david.marchand@redhat.com
> Subject: [EXT] Re: [PATCH v6 06/21] pdcp: add pre and post process for UL
>=20
> External Email
>=20
> ----------------------------------------------------------------------
> Hello,
>=20
> I'm sorry to inform you that I see a compilation failure when cross-compi=
ling
> for PPC64:
> err_mb is seen as potentially unitialized when calling rte_memcpy().
>=20
>=20
> 30/05/2023 12:01, Anoob Joseph:
> > +static uint16_t
> > +pdcp_post_process_ul(const struct rte_pdcp_entity *entity,
> > +		     struct rte_mbuf *in_mb[], struct rte_mbuf *out_mb[],
> > +		     uint16_t num, uint16_t *nb_err_ret) {
> > +	struct entity_priv *en_priv =3D entity_priv_get(entity);
> > +	const uint32_t hdr_trim_sz =3D en_priv->aad_sz;
> > +	int i, nb_success =3D 0, nb_err =3D 0;
> > +	struct rte_mbuf *mb, *err_mb[num];
> > +
>=20
> I need to add a workaround here to make GCC happy:
> #ifdef RTE_ARCH_PPC_64
> 	err_mb[0] =3D NULL; /* workaround PPC-GCC bug */ #endif
>=20
> > +	for (i =3D 0; i < num; i++) {
> > +		mb =3D in_mb[i];
> > +		if (unlikely(mb->ol_flags &
> RTE_MBUF_F_RX_SEC_OFFLOAD_FAILED)) {
> > +			err_mb[nb_err++] =3D mb;
> > +			continue;
> > +		}
> > +
> > +		if (hdr_trim_sz)
> > +			rte_pktmbuf_adj(mb, hdr_trim_sz);
> > +
> > +		out_mb[nb_success++] =3D mb;
> > +	}
> > +
> > +	if (unlikely(nb_err !=3D 0))
> > +		rte_memcpy(&out_mb[nb_success], err_mb, nb_err *
> sizeof(struct
> > +rte_mbuf *));
> > +
> > +	*nb_err_ret =3D nb_err;
> > +	return nb_success;
> > +}
>=20
> I've added the workaround in 3 places while pulling next-crypto tree.
> Feel free to improve it with a new patch, thanks.
>=20