Re: [dpdk-stable] [dpdk-dev] [PATCH v2] examples/tep_term: fix return value check

[David Marchand <david.marchand@redhat.com>]

On Mon, Feb 10, 2020 at 8:05 AM Xiaoyun Li <xiaoyun.li@intel.com> wrote:
>
> Added return value check for 'rte_eth_dev_info_get()'.
>
> Coverity issue: 349922
> Fixes: 2bb43bd4350a ("examples/tep_term: add TSO offload configuration")

rte_eth_dev_info_get() prototype changed in 19.11.
Before this, it was a void.
So this Fixes: line is wrong.


> Cc: stable@dpdk.org
>
> Signed-off-by: Xiaoyun Li <xiaoyun.li@intel.com>
> ---
>  examples/tep_termination/vxlan_setup.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/examples/tep_termination/vxlan_setup.c b/examples/tep_termination/vxlan_setup.c
> index eca119a72..f8385b690 100644
> --- a/examples/tep_termination/vxlan_setup.c
> +++ b/examples/tep_termination/vxlan_setup.c
> @@ -195,7 +195,9 @@ vxlan_port_init(uint16_t port, struct rte_mempool *mbuf_pool)
>
>         if (tso_segsz != 0) {
>                 struct rte_eth_dev_info dev_info;
> -               rte_eth_dev_info_get(port, &dev_info);
> +               retval = rte_eth_dev_info_get(port, &dev_info);
> +               if (retval != 0)
> +                       return retval;
>                 if ((dev_info.tx_offload_capa & DEV_TX_OFFLOAD_TCP_TSO) == 0)
>                         RTE_LOG(WARNING, PORT,
>                                 "hardware TSO offload is not supported\n");

I had a look at this function, dev_info is populated for port earlier
in the function, why do we need to check it again?
https://git.dpdk.org/dpdk/tree/examples/tep_termination/vxlan_setup.c?h=v20.02-rc2#n119


-- 
David Marchand