igc: Remove 'queue' check in igc_del_mac_filter()

igc_add_mac_filter() doesn't allow us to have more than one entry with
the same address and address type in adapter->mac_table so checking if
'queue' matches in igc_del_mac_filter() isn't necessary. This patch
removes that check.

This patch also takes the opportunity to improve the igc_del_mac_filter
documentation and remove comment which is not applicable to this I225
controller.

Signed-off-by: Andre Guedes <andre.guedes@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

diff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c
index 070df92..badb8ec 100644 (file)
--- a/drivers/net/ethernet/intel/igc/igc_main.c
+++ b/drivers/net/ethernet/intel/igc/igc_main.c
@@ -2233,14 +2233,17 @@ static int igc_add_mac_filter(struct igc_adapter *adapter, const u8 *addr,
        return -ENOSPC;
 }
 
-/* Remove a MAC filter for 'addr' directing matching traffic to
- * 'queue', 'flags' is used to indicate what kind of match need to be
- * removed, match is by default for the destination address, if
- * matching by source address is to be removed the flag
- * IGC_MAC_STATE_SRC_ADDR can be used.
+/**
+ * igc_del_mac_filter() - Delete MAC address filter
+ * @adapter: Pointer to adapter where the filter should be deleted from
+ * @addr: MAC address
+ * @flags: Set IGC_MAC_STATE_SRC_ADDR bit to indicate @address is a source
+ *         address
+ *
+ * Return: 0 in case of success, negative errno code otherwise.
  */
 static int igc_del_mac_filter(struct igc_adapter *adapter, const u8 *addr,
-                             const u8 queue, const u8 flags)
+                             const u8 flags)
 {
        struct igc_hw *hw = &adapter->hw;
        int rar_entries = hw->mac.rar_entry_count;
@@ -2249,17 +2252,11 @@ static int igc_del_mac_filter(struct igc_adapter *adapter, const u8 *addr,
        if (!is_valid_ether_addr(addr))
                return -EINVAL;
 
-       /* Search for matching entry in the MAC table based on given address
-        * and queue. Do not touch entries at the end of the table reserved
-        * for the VF MAC addresses.
-        */
        for (i = 0; i < rar_entries; i++) {
                if (!(adapter->mac_table[i].state & IGC_MAC_STATE_IN_USE))
                        continue;
                if (flags && (adapter->mac_table[i].state & flags) != flags)
                        continue;
-               if (adapter->mac_table[i].queue != queue)
-                       continue;
                if (!ether_addr_equal(adapter->mac_table[i].addr, addr))
                        continue;
 
@@ -2295,7 +2292,7 @@ static int igc_uc_unsync(struct net_device *netdev, const unsigned char *addr)
 {
        struct igc_adapter *adapter = netdev_priv(netdev);
 
-       return igc_del_mac_filter(adapter, addr, adapter->num_rx_queues, 0);
+       return igc_del_mac_filter(adapter, addr, 0);
 }
 
 /**
@@ -3738,7 +3735,7 @@ int igc_add_mac_steering_filter(struct igc_adapter *adapter,
 int igc_del_mac_steering_filter(struct igc_adapter *adapter,
                                const u8 *addr, u8 queue, u8 flags)
 {
-       return igc_del_mac_filter(adapter, addr, queue,
+       return igc_del_mac_filter(adapter, addr,
                                  IGC_MAC_STATE_QUEUE_STEERING | flags);
 }