diff options
| author | Alexander Duyck | 2009-03-13 21:41:37 +0100 |
|---|---|---|
| committer | David S. Miller | 2009-03-14 20:41:03 +0100 |
| commit | cad6d05f5676d879bb2a48154aea26cd81ebf1bb (patch) | |
| tree | d44c60b143798c799a61bee96e9cf495f1e28b34 /drivers/net/igb/e1000_mac.c | |
| parent | igb: support wol on second port (diff) | |
| download | kernel-qcow2-linux-cad6d05f5676d879bb2a48154aea26cd81ebf1bb.tar.gz kernel-qcow2-linux-cad6d05f5676d879bb2a48154aea26cd81ebf1bb.tar.xz kernel-qcow2-linux-cad6d05f5676d879bb2a48154aea26cd81ebf1bb.zip | |
igb: add PF to pool
Add Pf to pool if adding a VLVF register value and the VFTA bit is
already set.
This patch addresses the unlikely situation that the PF adds a vlan
entry when the vlvf is full, and a vf later adds the vlan to the vlvf.
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>
Diffstat (limited to 'drivers/net/igb/e1000_mac.c')
| -rw-r--r-- | drivers/net/igb/e1000_mac.c | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/drivers/net/igb/e1000_mac.c b/drivers/net/igb/e1000_mac.c index 2804db03e9d9..f11592fe1371 100644 --- a/drivers/net/igb/e1000_mac.c +++ b/drivers/net/igb/e1000_mac.c @@ -126,19 +126,26 @@ void igb_write_vfta(struct e1000_hw *hw, u32 offset, u32 value) * 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) +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; + u32 vfta = array_rd32(E1000_VFTA, index); + s32 ret_val = 0; - vfta = array_rd32(E1000_VFTA, index); - if (add) - vfta |= mask; - else - vfta &= ~mask; + /* 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; } /** |