[dpdk-dev] [PATCH 2/2] app/testpmd: retain original FDIR mode when configuring DCB

[Ajit Khaparde]

On Mon, Sep 7, 2020 at 7:16 PM Wei Hu (Xavier)
<huwei013 at chinasoftinc.com> wrote:
>
> From: Huisong Li <lihuisong at huawei.com>
>
> Sometimes, we have to start testpmd application with --pkt-filter-mode to
> test flow table feature. When using 'port config 0 dcb vt off 4 pfc on'
> command, the dcb information are configured in init_port_dcb_config
> function by get_eth_dcb_conf function, And then rte_eth_dev_configure API
> function will be called to re-configure PMD driver.
>
> The values of rxmode and txmode in rte_eth_conf struct used to configure
> PMD driver, come from the current values maintained in testpmd. However,
> the fdir_conf.mode in rte_eth_conf struct is not set, which may cause that
> some PMD driver cannot test the flow table feature when multiple TCs are
> enabled.
>
> Fixes: 1a572499beb6 ("app/testpmd: setup DCB forwarding based on traffic class")
> Cc: stable at dpdk.org
>
> Signed-off-by: Huisong Li <lihuisong at huawei.com>
> Signed-off-by: Wei Hu (Xavier) <xavier.huwei at huawei.com>
> ---
>  app/test-pmd/testpmd.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c
> index 73543bb..19bf972 100644
> --- a/app/test-pmd/testpmd.c
> +++ b/app/test-pmd/testpmd.c
> @@ -3521,6 +3521,7 @@ init_port_dcb_config(portid_t pid,
>
>         port_conf.rxmode = rte_port->dev_conf.rxmode;
>         port_conf.txmode = rte_port->dev_conf.txmode;
> +       port_conf.fdir_conf.mode = rte_port->dev_conf.fdir_conf.mode;
This is probably not necessary. FDIR is due for deprecation [1].
https://doc.dpdk.org/guides/rel_notes/deprecation.html

>
>         /*set configuration of DCB in vt mode and DCB in non-vt mode*/
>         retval = get_eth_dcb_conf(pid, &port_conf, dcb_mode, num_tcs, pfc_en);
> --
> 2.9.5
>