[dpdk-stable] [PATCH] net/ixgbe: fix vf mac remains

[Wang, Haiyue]

> -----Original Message-----
> From: Qiming Chen <chenqiming_huawei at 163.com>
> Sent: Tuesday, August 31, 2021 22:17
> To: dev at dpdk.org
> Cc: Wang, Haiyue <haiyue.wang at intel.com>; Qiming Chen <chenqiming_huawei at 163.com>; stable at dpdk.org
> Subject: [PATCH] net/ixgbe: fix vf mac remains
> 
> In the following two scenarios, the mac address residual problem
> will occur:
> 1) In the VF hard pass-through environment, after adding the mac
> address, the process restarts, and the previously added mac is
> still valid;
> 2) In the vf hard pass-through environment, after the mac address
> is issued, the port will start/stop, and the previously added mac
> is still valid;
> 
> The patch clears the mac address at the start and stop of the vf
> port. After the start is cleared, the rte framework will restore
> the mac addition to solve the problem of residual mac addresses.
> 
> Fixes: abf7275bbaa2 ("ixgbe: move to drivers/net/")

Should be:

Fixes: af75078fece3 ("first public release")

> Cc: stable at dpdk.org
> 
> Signed-off-by: Qiming Chen <chenqiming_huawei at 163.com>
> ---
>  drivers/net/ixgbe/ixgbe_ethdev.c | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
> index 6a91f104e1..e40350d86e 100644
> --- a/drivers/net/ixgbe/ixgbe_ethdev.c
> +++ b/drivers/net/ixgbe/ixgbe_ethdev.c
> @@ -5410,6 +5410,9 @@ ixgbevf_dev_start(struct rte_eth_dev *dev)
>  	 */
>  	ixgbevf_dev_link_update(dev, 0);
> 
> +	/* Clear the mac address, the rte frame will be restored */
> +	ixgbevf_set_uc_addr_vf(hw, 0, NULL);
> +
>  	hw->adapter_stopped = false;
> 
>  	return 0;
> @@ -5454,6 +5457,9 @@ ixgbevf_dev_stop(struct rte_eth_dev *dev)
>  		intr_handle->intr_vec = NULL;
>  	}
> 
> +	/* Clear the mac address */
> +	ixgbevf_set_uc_addr_vf(hw, 0, NULL);
> +
>  	adapter->rss_reta_updated = 0;
> 
>  	return 0;
> --
> 2.30.1.windows.1