fm10k: clarify action when updating the VLAN table

Clarify the comment for when entering promiscuous mode that we update
the VLAN table. Add a comment distinguishing the case where we're
exiting promiscuous mode and need to clear the entire VLAN table.

Signed-off-by: Ngai-Mint Kwan <ngai-mint.kwan@intel.com>
Signed-off-by: Jacob Keller <jacob.e.keller@gmail.com>
Tested-by: Krishneil Singh <krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

diff --git a/drivers/net/ethernet/intel/fm10k/fm10k_netdev.c b/drivers/net/ethernet/intel/fm10k/fm10k_netdev.c
index 4c9d8e5..a38ae5c 100644 (file)
--- a/drivers/net/ethernet/intel/fm10k/fm10k_netdev.c
+++ b/drivers/net/ethernet/intel/fm10k/fm10k_netdev.c
@@ -1165,10 +1165,12 @@ static void fm10k_set_rx_mode(struct net_device *dev)
 
        /* update xcast mode first, but only if it changed */
        if (interface->xcast_mode != xcast_mode) {
-               /* update VLAN table */
+               /* update VLAN table when entering promiscuous mode */
                if (xcast_mode == FM10K_XCAST_MODE_PROMISC)
                        fm10k_queue_vlan_request(interface, FM10K_VLAN_ALL,
                                                 0, true);
+
+               /* clear VLAN table when exiting promiscuous mode */
                if (interface->xcast_mode == FM10K_XCAST_MODE_PROMISC)
                        fm10k_clear_unused_vlans(interface);