ice: implement bridge port vlan

Port VLAN in this case means push and pop VLAN action on specific vid.
There are a few limitation in hardware:
- push and pop can't be used separately
- if port VLAN is used there can't be any trunk VLANs, because pop
  action is done on all traffic received by VSI in port VLAN mode
- port VLAN mode on uplink port isn't supported

Reflect these limitations in code using dev_info to inform the user
about unsupported configuration.

In bridge mode there is a need to configure port vlan without resetting
VFs. To do that implement ice_port_vlan_on/off() functions. They are
only configuring correct vlan_ops to allow setting port vlan.

We also need to clear port vlan without resetting the VF which is not
supported right now. Change it by implementing clear_port_vlan ops.
As previous VLAN configuration isn't always the same, store current
config while creating port vlan and restore it in clear function.

Configuration steps:
- configure switchdev with bridge
- #bridge vlan add dev eth0 vid 120 pvid untagged
- #bridge vlan add dev eth1 vid 120 pvid untagged
- ping from VF0 to VF1

Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Signed-off-by: Wojciech Drewek <wojciech.drewek@intel.com>
Tested-by: Sujai Buvaneswaran <sujai.buvaneswaran@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/net/ethernet/intel/ice/ice.h b/drivers/net/ethernet/intel/ice/ice.h
index 8918a4b836a2..9109006336f0 100644
--- a/drivers/net/ethernet/intel/ice/ice.h
+++ b/drivers/net/ethernet/intel/ice/ice.h
@@ -370,6 +370,7 @@ struct ice_vsi {
 	u16 rx_buf_len;
 
 	struct ice_aqc_vsi_props info;	 /* VSI properties */
+	struct ice_vsi_vlan_info vlan_info;	/* vlan config to be restored */
 
 	/* VSI stats */
 	struct rtnl_link_stats64 net_stats;