diff options
Diffstat (limited to 'drivers/net/igb/e1000_mac.c')
| -rw-r--r-- | drivers/net/igb/e1000_mac.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/net/igb/e1000_mac.c b/drivers/net/igb/e1000_mac.c index 5c249e2ce93..f4c315b5a90 100644 --- a/drivers/net/igb/e1000_mac.c +++ b/drivers/net/igb/e1000_mac.c @@ -118,6 +118,37 @@ void igb_write_vfta(struct e1000_hw *hw, u32 offset, u32 value) } /** + * 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 + **/ +s32 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 = array_rd32(E1000_VFTA, index); + s32 ret_val = 0; + + /* bit was set/cleared before we started */ + if ((!!(vfta & mask)) == add) { + ret_val = -E1000_ERR_CONFIG; + } else { + if (add) + vfta |= mask; + else + vfta &= ~mask; + } + + igb_write_vfta(hw, index, vfta); + + return ret_val; +} + +/** * igb_check_alt_mac_addr - Check for alternate MAC addr * @hw: pointer to the HW structure * |