[dpdk-dev] [PATCH] ethdev: fix check of rx configure
Ferruh Yigit
ferruh.yigit at intel.com
Tue Nov 3 14:58:17 CET 2020
On 11/3/2020 1:31 PM, wangyunjian wrote:
> From: Yunjian Wang <wangyunjian at 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 at 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?
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