Re: [dpdk-dev] [PATCH] net/ixgbe: update data->eth_link status on start

["Zhang, Helin" <helin.zhang@intel.com>]

> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Chas Williams
> Sent: Wednesday, February 14, 2018 6:56 AM
> To: dev@dpdk.org
> Cc: Lu, Wenzhuo; Ananyev, Konstantin; Charles (Chas) Williams
> Subject: [dpdk-dev] [PATCH] net/ixgbe: update data->eth_link status on start
> 
> From: "Charles (Chas) Williams" <chas3@att.com>
> 
> dev->data->eth_link isn't updated until the first interrupt.  If a
> link is carrier down, then this interrupt may never happen.  Before we finished
> starting the PMD, call ixgbe_dev_link_update() to ensure we have a valid status.
> 
> Signed-off-by: Chas Williams <chas3@att.com>
> ---
>  drivers/net/ixgbe/ixgbe_ethdev.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c
> b/drivers/net/ixgbe/ixgbe_ethdev.c
> index 37eb668..27d29dc 100644
> --- a/drivers/net/ixgbe/ixgbe_ethdev.c
> +++ b/drivers/net/ixgbe/ixgbe_ethdev.c
> @@ -2666,6 +2666,8 @@ ixgbe_dev_start(struct rte_eth_dev *dev)
>  	if (err)
>  		goto error;
> 
> +	ixgbe_dev_link_update(dev, 0);
It is called in rte_eth_dev_start() if lsc is not enabled,
and it is not needed here to avoid any duplication.
BTW, did you see any issue or just check the code? Thanks!

/Helin

> +
>  skip_link_setup:
> 
>  	if (rte_intr_allow_others(intr_handle)) { @@ -5033,6 +5035,8 @@
> ixgbevf_dev_start(struct rte_eth_dev *dev)
> 
>  	ixgbevf_dev_rxtx_start(dev);
> 
> +	ixgbevf_dev_link_update(dev, 0);
> +
>  	/* check and configure queue intr-vector mapping */
>  	if (rte_intr_cap_multiple(intr_handle) &&
>  	    dev->data->dev_conf.intr_conf.rxq) {
> --
> 2.9.5