igb: Add support for enabling VFs to PF driver.
This patch adds the support to handle requests from the VF to perform
operations such as completing resets, setting/reading mac address, adding
vlans, adding multicast addresses, setting rlpml, and general
communications between the PF and all VFs.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/igb/e1000_mac.c b/drivers/net/igb/e1000_mac.c
index 5c249e2..2804db0 100644
--- a/drivers/net/igb/e1000_mac.c
+++ b/drivers/net/igb/e1000_mac.c
@@ -118,6 +118,30 @@
}
/**
+ * igb_vfta_set - enable or disable vlan in VLAN filter table
+ * @hw: pointer to the HW structure
+ * @vid: VLAN id to add or remove
+ * @add: if true add filter, if false remove
+ *
+ * Sets or clears a bit in the VLAN filter table array based on VLAN id
+ * and if we are adding or removing the filter
+ **/
+void igb_vfta_set(struct e1000_hw *hw, u32 vid, bool add)
+{
+ u32 index = (vid >> E1000_VFTA_ENTRY_SHIFT) & E1000_VFTA_ENTRY_MASK;
+ u32 mask = 1 < (vid & E1000_VFTA_ENTRY_BIT_SHIFT_MASK);
+ u32 vfta;
+
+ vfta = array_rd32(E1000_VFTA, index);
+ if (add)
+ vfta |= mask;
+ else
+ vfta &= ~mask;
+
+ igb_write_vfta(hw, index, vfta);
+}
+
+/**
* igb_check_alt_mac_addr - Check for alternate MAC addr
* @hw: pointer to the HW structure
*