Re: [PATCH] i40evf: fix mac deletion when stop dev

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

> -----Original Message-----
> From: Wu, Jingjing
> Sent: Monday, November 30, 2015 11:54 AM
> To: dev@dpdk.org
> Cc: Wu, Jingjing; Zhang, Helin; Pei, Yulong
> Subject: [PATCH] i40evf: fix mac deletion when stop dev
> 
> When dev_stop is called in i40evf pmd driver, queues are switched off to
> stop receiving and transmitting. But the mac address of this VF still exists in
> VEB switch.
> To stop the traffic from VSI level, the mac address need to be removed too.
> Then the bandwidth for this SRIOV VSI can be freed.
> This patch fix this issue.
> 
> Fixes: 4861cde46116 ("i40e: new poll mode driver")
> 
> Signed-off-by: Jingjing Wu <jingjing.wu@intel.com>
> ---
>  drivers/net/i40e/i40e_ethdev_vf.c | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/drivers/net/i40e/i40e_ethdev_vf.c
> b/drivers/net/i40e/i40e_ethdev_vf.c
> index 5c554f2..14d2a50 100644
> --- a/drivers/net/i40e/i40e_ethdev_vf.c
> +++ b/drivers/net/i40e/i40e_ethdev_vf.c
> @@ -1878,7 +1878,9 @@ err_queue:
>  static void
>  i40evf_dev_stop(struct rte_eth_dev *dev)  {
> +	struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data-
> >dev_private);
>  	struct rte_intr_handle *intr_handle = &dev->pci_dev->intr_handle;
> +	struct ether_addr mac_addr;
> 
>  	PMD_INIT_FUNC_TRACE();
> 
> @@ -1892,6 +1894,11 @@ i40evf_dev_stop(struct rte_eth_dev *dev)
>  		rte_free(intr_handle->intr_vec);
>  		intr_handle->intr_vec = NULL;
>  	}
> +	/* Set mac addr */
> +	(void)rte_memcpy(mac_addr.addr_bytes, hw->mac.addr,
> +				sizeof(mac_addr.addr_bytes));
Use ether_addr_copy() instead.

/Helin

> +	/* Delete mac addr of this vf */
> +	i40evf_del_mac_addr(dev, &mac_addr);
>  }
> 
>  static int
> --
> 2.4.0