net/bnxt: check return value

  Check return value of rte_kvargs_process()

Coverity issue: 357765

Fixes: ba404aacc5cf ("net/bnxt: set maximum flow count")
Fixes: 02a95625fe9c ("net/bnxt: add flow stats in extended stats")
Fixes: 7b0940653720 ("net/bnxt: support host memory based TruFlow")

Cc: stable@dpdk.org

Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
Reviewed-by: Lance Richardson <lance.richardson@broadcom.com>
---
 drivers/net/bnxt/bnxt_ethdev.c | 31 +++++++++++++++++++++----------
 1 file changed, 21 insertions(+), 10 deletions(-)
  

On Thu, Mar 18, 2021 at 5:17 PM Ajit Khaparde
<ajit.khaparde@broadcom.com> wrote:
>
> Check return value of rte_kvargs_process()
>
> Coverity issue: 357765
>
> Fixes: ba404aacc5cf ("net/bnxt: set maximum flow count")
> Fixes: 02a95625fe9c ("net/bnxt: add flow stats in extended stats")
> Fixes: 7b0940653720 ("net/bnxt: support host memory based TruFlow")
>
> Cc: stable@dpdk.org
>
> Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
> Reviewed-by: Lance Richardson <lance.richardson@broadcom.com>
Patch applied to dpdk-next-net-brcm.

> ---
>  drivers/net/bnxt/bnxt_ethdev.c | 31 +++++++++++++++++++++----------
>  1 file changed, 21 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/net/bnxt/bnxt_ethdev.c b/drivers/net/bnxt/bnxt_ethdev.c
> index 1990d65c29..930e7e83f4 100644
> --- a/drivers/net/bnxt/bnxt_ethdev.c
> +++ b/drivers/net/bnxt/bnxt_ethdev.c
> @@ -5477,40 +5477,49 @@ bnxt_parse_devarg_rep_fc_f2r(__rte_unused const char *key,
>         return 0;
>  }
>
> -static void
> +static int
>  bnxt_parse_dev_args(struct bnxt *bp, struct rte_devargs *devargs)
>  {
>         struct rte_kvargs *kvlist;
> +       int ret;
>
>         if (devargs == NULL)
> -               return;
> +               return 0;
>
>         kvlist = rte_kvargs_parse(devargs->args, bnxt_dev_args);
>         if (kvlist == NULL)
> -               return;
> +               return -EINVAL;
>
>         /*
>          * Handler for "truflow" devarg.
>          * Invoked as for ex: "-a 0000:00:0d.0,host-based-truflow=1"
>          */
> -       rte_kvargs_process(kvlist, BNXT_DEVARG_TRUFLOW,
> -                          bnxt_parse_devarg_truflow, bp);
> +       ret = rte_kvargs_process(kvlist, BNXT_DEVARG_TRUFLOW,
> +                                bnxt_parse_devarg_truflow, bp);
> +       if (ret)
> +               goto err;
>
>         /*
>          * Handler for "flow_xstat" devarg.
>          * Invoked as for ex: "-a 0000:00:0d.0,flow_xstat=1"
>          */
> -       rte_kvargs_process(kvlist, BNXT_DEVARG_FLOW_XSTAT,
> -                          bnxt_parse_devarg_flow_xstat, bp);
> +       ret = rte_kvargs_process(kvlist, BNXT_DEVARG_FLOW_XSTAT,
> +                                bnxt_parse_devarg_flow_xstat, bp);
> +       if (ret)
> +               goto err;
>
>         /*
>          * Handler for "max_num_kflows" devarg.
>          * Invoked as for ex: "-a 000:00:0d.0,max_num_kflows=32"
>          */
> -       rte_kvargs_process(kvlist, BNXT_DEVARG_MAX_NUM_KFLOWS,
> -                          bnxt_parse_devarg_max_num_kflows, bp);
> +       ret = rte_kvargs_process(kvlist, BNXT_DEVARG_MAX_NUM_KFLOWS,
> +                                bnxt_parse_devarg_max_num_kflows, bp);
> +       if (ret)
> +               goto err;
>
> +err:
>         rte_kvargs_free(kvlist);
> +       return ret;
>  }
>
>  static int bnxt_alloc_switch_domain(struct bnxt *bp)
> @@ -5645,7 +5654,9 @@ bnxt_dev_init(struct rte_eth_dev *eth_dev, void *params __rte_unused)
>         bp = eth_dev->data->dev_private;
>
>         /* Parse dev arguments passed on when starting the DPDK application. */
> -       bnxt_parse_dev_args(bp, pci_dev->device.devargs);
> +       rc = bnxt_parse_dev_args(bp, pci_dev->device.devargs);
> +       if (rc)
> +               goto error_free;
>
>         rc = bnxt_drv_init(eth_dev);
>         if (rc)
> --
> 2.21.1 (Apple Git-122.3)
>