From: wangyunjian <wangyunjian@huawei.com>
To: Ferruh Yigit <ferruh.yigit@intel.com>, "dev@dpdk.org" <dev@dpdk.org>
Cc: "thomas@monjalon.net" <thomas@monjalon.net>,
"andrew.rybchenko@oktetlabs.ru" <andrew.rybchenko@oktetlabs.ru>,
"Lilijun (Jerry)" <jerry.lilijun@huawei.com>,
xudingke <xudingke@huawei.com>
Subject: Re: [dpdk-dev] [PATCH] ethdev: fix check of rx configure
Date: Wed, 4 Nov 2020 01:15:38 +0000 [thread overview]
Message-ID: <34EFBCA9F01B0748BEB6B629CE643AE60DAF1121@dggemm513-mbx.china.huawei.com> (raw)
In-Reply-To: <eca9ab73-96b4-146c-1e00-041dc93580d1@intel.com>
> -----Original Message-----
> From: Ferruh Yigit [mailto:ferruh.yigit@intel.com]
> Sent: Tuesday, November 3, 2020 9:58 PM
> To: wangyunjian <wangyunjian@huawei.com>; dev@dpdk.org
> Cc: thomas@monjalon.net; andrew.rybchenko@oktetlabs.ru; Lilijun (Jerry)
> <jerry.lilijun@huawei.com>; xudingke <xudingke@huawei.com>
> Subject: Re: [dpdk-dev] [PATCH] ethdev: fix check of rx configure
>
> On 11/3/2020 1:31 PM, wangyunjian wrote:
> > From: Yunjian Wang <wangyunjian@huawei.com>
> >
> > Coverity flags that 'rx_conf' variable is used before it's checked for
> > NULL. This patch fixes this issue.
> >
> > Coverity issue: 363570
> > Fixes: 4ff702b5dfa9 ("ethdev: introduce Rx buffer split")
> >
> > Signed-off-by: Yunjian Wang <wangyunjian@huawei.com>
> > ---
> > lib/librte_ethdev/rte_ethdev.c | 9 +++++----
> > 1 file changed, 5 insertions(+), 4 deletions(-)
> >
> > diff --git a/lib/librte_ethdev/rte_ethdev.c
> > b/lib/librte_ethdev/rte_ethdev.c index b12bb3854d..c74502d45e 100644
> > --- a/lib/librte_ethdev/rte_ethdev.c
> > +++ b/lib/librte_ethdev/rte_ethdev.c
> > @@ -1978,16 +1978,17 @@ rte_eth_rx_queue_setup(uint16_t port_id,
> uint16_t rx_queue_id,
> > return -EINVAL;
> > }
> > } else {
> > - const struct rte_eth_rxseg_split *rx_seg =
> > - (const struct rte_eth_rxseg_split *)rx_conf->rx_seg;
> > - uint16_t n_seg = rx_conf->rx_nseg;
> > -
> > /* Extended multi-segment configuration check. */
> > if (rx_conf == NULL || rx_conf->rx_seg == NULL ||
> rx_conf->rx_nseg == 0) {
> > RTE_ETHDEV_LOG(ERR,
> > "Memory pool is null and no extended
> configuration provided\n");
> > return -EINVAL;
> > }
> > +
> > + const struct rte_eth_rxseg_split *rx_seg =
> > + (const struct rte_eth_rxseg_split *)rx_conf->rx_seg;
> > + uint16_t n_seg = rx_conf->rx_nseg;
> > +
>
> Can you please leave the declaration of the variables at the beginning of the
> block, but move the assignment?
OK, thanks for your suggestion, will include it in next version.
Yunjian
next prev parent reply other threads:[~2020-11-04 1:15 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-03 13:31 wangyunjian
2020-11-03 13:58 ` Ferruh Yigit
2020-11-04 1:15 ` wangyunjian [this message]
2020-11-04 1:24 ` [dpdk-dev] [PATCH v2] " wangyunjian
2020-11-04 11:11 ` Ferruh Yigit
2020-11-04 11:22 ` Ferruh Yigit
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