[dpdk-dev] net/ixgbe: fix default MAC setting

  Pool 0 is not PF, it's VF 0. So the MAC is set for VF 0
but not PF.
The code introduced a weird issue. In the scenario PF + VF,
when only starting PF, the default PF MAC address is working.
But after starting a VF, the default PF MAC address becomes
the VF's address.

Use the pool which is not occupied by VFs for PF to fix it.

Fixes: 8164fe82846b ("ixgbe: add default mac address modifier")
Cc: stable@dpdk.org

Signed-off-by: Wenzhuo Lu <wenzhuo.lu@intel.com>
---
 drivers/net/ixgbe/ixgbe_ethdev.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
  

Hello Wenzhuo,

How about also delete meaningless "ixgbe_remove_rar(dev, 0);"?

Best regards,
Igor

On Tue, May 2, 2017 at 11:34 AM, Wenzhuo Lu <wenzhuo.lu@intel.com> wrote:

> Pool 0 is not PF, it's VF 0. So the MAC is set for VF 0
> but not PF.
> The code introduced a weird issue. In the scenario PF + VF,
> when only starting PF, the default PF MAC address is working.
> But after starting a VF, the default PF MAC address becomes
> the VF's address.
>
> Use the pool which is not occupied by VFs for PF to fix it.
>
> Fixes: 8164fe82846b ("ixgbe: add default mac address modifier")
> Cc: stable@dpdk.org
>
> Signed-off-by: Wenzhuo Lu <wenzhuo.lu@intel.com>
> ---
>  drivers/net/ixgbe/ixgbe_ethdev.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_
> ethdev.c
> index bbae4f9..9ddd685 100644
> --- a/drivers/net/ixgbe/ixgbe_ethdev.c
> +++ b/drivers/net/ixgbe/ixgbe_ethdev.c
> @@ -4658,9 +4658,11 @@ static int ixgbevf_dev_xstats_get_names(__rte_unused
> struct rte_eth_dev *dev,
>  static void
>  ixgbe_set_default_mac_addr(struct rte_eth_dev *dev, struct ether_addr
> *addr)
>  {
> +       struct rte_pci_device *pci_dev = IXGBE_DEV_TO_PCI(dev);
> +
>         ixgbe_remove_rar(dev, 0);
>
> -       ixgbe_add_rar(dev, addr, 0, 0);
> +       ixgbe_add_rar(dev, addr, 0, pci_dev->max_vfs);
>  }
>
>  static bool
> --
> 1.9.3
>
>
  

02/05/2017 10:34, Wenzhuo Lu:
> Pool 0 is not PF, it's VF 0. So the MAC is set for VF 0
> but not PF.
> The code introduced a weird issue. In the scenario PF + VF,
> when only starting PF, the default PF MAC address is working.
> But after starting a VF, the default PF MAC address becomes
> the VF's address.
> 
> Use the pool which is not occupied by VFs for PF to fix it.
> 
> Fixes: 8164fe82846b ("ixgbe: add default mac address modifier")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Wenzhuo Lu <wenzhuo.lu@intel.com>

Applied, thanks