igb: Add Anti-spoofing feature support

[pandora-kernel.git] / drivers / net / igb / e1000_82575.c

diff --git a/drivers/net/igb/e1000_82575.c b/drivers/net/igb/e1000_82575.c
index 50f6e96..0a2368f 100644 (file)
--- a/drivers/net/igb/e1000_82575.c
+++ b/drivers/net/igb/e1000_82575.c
@@ -1479,6 +1479,39 @@ out:
        return ret_val;
 }
 
+/**
+ *  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;
+       }
+}
+
 /**
  *  igb_vmdq_set_loopback_pf - enable or disable vmdq loopback
  *  @hw: pointer to the hardware struct