+/**
+ * igb_vmdq_set_anti_spoofing_pf - enable or disable anti-spoofing
+ * @hw: pointer to the hardware struct
+ * @enable: state to enter, either enabled or disabled
+ * @pf: Physical Function pool - do not set anti-spoofing for the PF
+ *
+ * enables/disables L2 switch anti-spoofing functionality.
+ **/
+void igb_vmdq_set_anti_spoofing_pf(struct e1000_hw *hw, bool enable, int pf)
+{
+ u32 dtxswc;
+
+ switch (hw->mac.type) {
+ case e1000_82576:
+ case e1000_i350:
+ dtxswc = rd32(E1000_DTXSWC);
+ if (enable) {
+ dtxswc |= (E1000_DTXSWC_MAC_SPOOF_MASK |
+ E1000_DTXSWC_VLAN_SPOOF_MASK);
+ /* The PF can spoof - it has to in order to
+ * support emulation mode NICs */
+ dtxswc ^= (1 << pf | 1 << (pf + MAX_NUM_VFS));
+ } else {
+ dtxswc &= ~(E1000_DTXSWC_MAC_SPOOF_MASK |
+ E1000_DTXSWC_VLAN_SPOOF_MASK);
+ }
+ wr32(E1000_DTXSWC, dtxswc);
+ break;
+ default:
+ break;
+ }
+}
+