It may happen that VF spawned for E610 adapter has problem with setting link up. This happens when ixgbevf supporting mailbox API 1.6 cooperates with PF driver which doesn't support this version of API, and hence doesn't support new approach for getting PF link data.

In that case VF asks PF to provide link data but as PF doesn't support it, returns -EOPNOTSUPP what leads to early bail from link configuration sequence.

Avoid such situation by using legacy VFLINKS approach whenever negotiated API version is less than 1.6.

To reproduce the issue just create VF and set its link up - adapter must be any from the E610 family, ixgbevf must support API 1.6 or higher while ixgbevf must not.

Fixes: 53f0eb62b4d2 ("ixgbevf: fix getting link speed data for E610 devices") Reviewed-by: Aleksandr Loktionov aleksandr.loktionov@intel.com Reviewed-by: Piotr Kwapulinski piotr.kwapulinski@intel.com Reviewed-by: Paul Menzel pmenzel@molgen.mpg.de Cc: stable@vger.kernel.org Signed-off-by: Jedrzej Jagielski jedrzej.jagielski@intel.com --- v2: extend the commit msg (Paul) --- drivers/net/ethernet/intel/ixgbevf/vf.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/ixgbevf/vf.c b/drivers/net/ethernet/intel/ixgbevf/vf.c index 29c5ce967938..8af88f615776 100644 --- a/drivers/net/ethernet/intel/ixgbevf/vf.c +++ b/drivers/net/ethernet/intel/ixgbevf/vf.c @@ -846,7 +846,8 @@ static s32 ixgbevf_check_mac_link_vf(struct ixgbe_hw *hw, if (!mac->get_link_status) goto out;

- if (hw->mac.type == ixgbe_mac_e610_vf) { + if (hw->mac.type == ixgbe_mac_e610_vf && + hw->api_version >= ixgbe_mbox_api_16) { ret_val = ixgbevf_get_pf_link_state(hw, speed, link_up); if (ret_val) goto out;