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charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable ________________________________ From: Medvedkin, Vladimir Sent: Monday 11 November 2024 5:46 pm To: Richardson, Bruce ; dev@dpdk.org Cc: stable@dpdk.org ; Connolly, Padraig J ; Stokes, Ian ; Zhang, Qi Z ; Kevin Liu Subject: Re: [PATCH] net/iavf: add segment-length check to Tx prep Acked-by: Vladimir Medvedkin On 11/11/2024 16:42, Bruce Richardson wrote: > In the Tx prep function, the metadata checks were only checking the > packet length and ignoring the data length. For single-buffer packets we > can quickly check that the data length is the packet length. > > Fixes: 19ee91c6bd9a ("net/iavf: check illegal packet sizes") > Cc: stable@dpdk.org > > Reported-by: Padraig Connolly > Signed-off-by: Bruce Richardson > --- > drivers/net/iavf/iavf_rxtx.c | 6 +++++- > 1 file changed, 5 insertions(+), 1 deletion(-) > > diff --git a/drivers/net/iavf/iavf_rxtx.c b/drivers/net/iavf/iavf_rxtx.c > index 4850b9e381..6a093c6746 100644 > --- a/drivers/net/iavf/iavf_rxtx.c > +++ b/drivers/net/iavf/iavf_rxtx.c > @@ -3677,7 +3677,11 @@ iavf_prep_pkts(__rte_unused void *tx_queue, struct= rte_mbuf **tx_pkts, > return i; > } > > - if (m->pkt_len < IAVF_TX_MIN_PKT_LEN) { > + /* valid packets are greater than min size, and single-buff= er pkts > + * must have data_len =3D=3D pkt_len > + */ > + if (m->pkt_len < IAVF_TX_MIN_PKT_LEN || > + (m->nb_segs =3D=3D 1 && m->data_len !=3D m-= >pkt_len)) { > rte_errno =3D EINVAL; > return i; > } -- Regards, Vladimir Tested-by: Padraig Connolly --_000_DS7PR11MB60158B50DDE23437F2B70E86D7202DS7PR11MB6015namp_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable


Acked-by: Vladimir= Medvedkin <vladimir.medvedkin@intel.com>

On 11/11/2024 16:42, Bruce Richardson wrote:
> In the Tx prep function, the metadata checks were only checking the > packet length and ignoring the data length. For single-buffer packets = we
> can quickly check that the data length is the packet length.
>
> Fixes: 19ee91c6bd9a ("net/iavf: check illegal packet sizes")=
> Cc: stable@dpdk.org
>
> Reported-by: Padraig Connolly <padraig.j.connolly@intel.com>
> Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
> ---
>   drivers/net/iavf/iavf_rxtx.c | 6 +++++-
>   1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/net/iavf/iavf_rxtx.c b/drivers/net/iavf/iavf_rxtx= .c
> index 4850b9e381..6a093c6746 100644
> --- a/drivers/net/iavf/iavf_rxtx.c
> +++ b/drivers/net/iavf/iavf_rxtx.c
> @@ -3677,7 +3677,11 @@ iavf_prep_pkts(__rte_unused void *tx_queue, str= uct rte_mbuf **tx_pkts,
>            = ;            return = i;
>            = ;    }
>  
> -           &nb= sp; if (m->pkt_len < IAVF_TX_MIN_PKT_LEN) {
> +           &nb= sp; /* valid packets are greater than min size, and single-buffer pkts
> +           &nb= sp;  * must have data_len =3D=3D pkt_len
> +           &nb= sp;  */
> +           &nb= sp; if (m->pkt_len < IAVF_TX_MIN_PKT_LEN ||
> +           &nb= sp;            =      (m->nb_segs =3D=3D 1 && m->data_len = !=3D m->pkt_len)) {
>            = ;            rte_err= no =3D EINVAL;
>            = ;            return = i;
>            = ;    }

--
Regards,
Vladimir
Tested-by: Padraig Connolly <padraig.j.connolly@intel.com>
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