From: Andre Guedes <andre.guedes@intel.com>
Date: Wed, 18 Mar 2020 16:00:52 -0700
Subject: igc: Check unsupported flag in igc_add_mac_filter()
Patch-mainline: v5.8-rc1
Git-commit: 23b7b511675669702ad32bf7f92dcf2ae05015ba
References: jsc#SLE-13533

The IGC_MAC_STATE_SRC_ADDR flags is not supported by igc_add_mac_
filter() so this patch adds a check for it and returns -ENOTSUPP
in case it is set.

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>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/intel/igc/igc_main.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/net/ethernet/intel/igc/igc_main.c
+++ b/drivers/net/ethernet/intel/igc/igc_main.c
@@ -2200,6 +2200,8 @@ static int igc_add_mac_filter(struct igc
 
 	if (is_zero_ether_addr(addr))
 		return -EINVAL;
+	if (flags & IGC_MAC_STATE_SRC_ADDR)
+		return -ENOTSUPP;
 
 	/* Search for the first empty entry in the MAC table.
 	 * Do not touch entries at the end of the table reserved for the VF MAC