[dpdk-stable] [PATCH] net/failsafe: report minimum and maximum MTU in device info

[Gaëtan Rivet]

On Tue, Dec 22, 2020, at 08:51, Andrew Rybchenko wrote:
> Take minimum and maximum MTU values for subdevices and
> report maximum of minimums and minimum of maximums.
> 
> Fixes: ad97ceece12c ("ethdev: add min/max MTU to device info")
> Cc: stable at dpdk.org
> 
> Signed-off-by: Andrew Rybchenko <andrew.rybchenko at oktetlabs.ru>
> ---
>  drivers/net/failsafe/failsafe_ops.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/net/failsafe/failsafe_ops.c 
> b/drivers/net/failsafe/failsafe_ops.c
> index 76d64871b4..5e6fb369e1 100644
> --- a/drivers/net/failsafe/failsafe_ops.c
> +++ b/drivers/net/failsafe/failsafe_ops.c
> @@ -1095,6 +1095,8 @@ static void
>  fs_dev_merge_info(struct rte_eth_dev_info *info,
>  		  const struct rte_eth_dev_info *sinfo)
>  {
> +	info->min_mtu = RTE_MAX(info->min_mtu, sinfo->min_mtu);
> +	info->max_mtu = RTE_MIN(info->max_mtu, sinfo->max_mtu);
>  	info->max_rx_pktlen = RTE_MIN(info->max_rx_pktlen, 
> sinfo->max_rx_pktlen);
>  	info->max_rx_queues = RTE_MIN(info->max_rx_queues, 
> sinfo->max_rx_queues);
>  	info->max_tx_queues = RTE_MIN(info->max_tx_queues, 
> sinfo->max_tx_queues);
> @@ -1172,6 +1174,8 @@ fs_dev_infos_get(struct rte_eth_dev *dev,
>  	int ret;
>  
>  	/* Use maximum upper bounds by default */
> +	infos->min_mtu = RTE_ETHER_MIN_MTU;
> +	infos->max_mtu = UINT16_MAX;
>  	infos->max_rx_pktlen = UINT32_MAX;
>  	infos->max_rx_queues = RTE_MAX_QUEUES_PER_PORT;
>  	infos->max_tx_queues = RTE_MAX_QUEUES_PER_PORT;
> -- 
> 2.29.2
> 
>

Hi Andrew,

Sorry, I missed this patch before.
It looks ok to me:

Acked-by: Gaetan Rivet <grive at u256.net>