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To: Shreyansh Jain <shreyansh.jain@nxp.com>, dev@dpdk.org
Cc: hemant.agrawal@nxp.com
References: <20170823141213.25476-1-shreyansh.jain@nxp.com>
 <20170909112132.13936-1-shreyansh.jain@nxp.com>
 <20170909112132.13936-29-shreyansh.jain@nxp.com>
From: Ferruh Yigit <ferruh.yigit@intel.com>
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Date: Mon, 18 Sep 2017 15:56:25 +0100
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Subject: Re: [dpdk-dev] [PATCH v4 28/41] net/dpaa: add support for link
	status update
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On 9/9/2017 12:21 PM, Shreyansh Jain wrote:
> Signed-off-by: Hemant Agrawal <hemant.agrawal@nxp.com>
> Signed-off-by: Shreyansh Jain <shreyansh.jain@nxp.com>

<...>

> +static int dpaa_eth_link_update(struct rte_eth_dev *dev,
> +				int wait_to_complete __rte_unused)
> +{
> +	struct dpaa_if *dpaa_intf = dev->data->dev_private;
> +	struct rte_eth_link *link = &dev->data->dev_link;
> +
> +	PMD_INIT_FUNC_TRACE();
> +
> +	if (dpaa_intf->fif->mac_type == fman_mac_1g)
> +		link->link_speed = 1000;
> +	else if (dpaa_intf->fif->mac_type == fman_mac_10g)
> +		link->link_speed = 10000;
> +	else
> +		DPAA_PMD_ERR("invalid link_speed: %s, %d",
> +			     dpaa_intf->name, dpaa_intf->fif->mac_type);
> +
> +	link->link_status = dpaa_intf->valid;
> +	link->link_duplex = ETH_LINK_FULL_DUPLEX;
> +	link->link_autoneg = ETH_LINK_AUTONEG;

Shouldn't this function go and get link information from hardware?

> +	return 0;
> +}
> +
>  static
>  int dpaa_eth_rx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx,
>  			    uint16_t nb_desc __rte_unused,
> @@ -216,6 +238,22 @@ static void dpaa_eth_tx_queue_release(void *txq __rte_unused)
>  	PMD_INIT_FUNC_TRACE();
>  }
>  
> +static int dpaa_link_down(struct rte_eth_dev *dev)
> +{
> +	PMD_INIT_FUNC_TRACE();
> +
> +	dpaa_eth_dev_stop(dev);

Drivers tend to do revers, make link down on device stop. Just to double
check if stop() is intended for link down.

> +	return 0;
> +}
> +
> +static int dpaa_link_up(struct rte_eth_dev *dev)
> +{
> +	PMD_INIT_FUNC_TRACE();
> +
> +	dpaa_eth_dev_start(dev);
> +	return 0;
> +}

<...>