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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>
This commit is contained in:
Alexander Duyck 2009-03-13 20:41:37 +00:00 committed by David S. Miller
parent a2cf8b6ce1
commit cad6d05f56
3 changed files with 22 additions and 10 deletions
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21
drivers/net/igb/e1000_mac.c
View File

@ -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;
}
/**

2
drivers/net/igb/e1000_mac.h
View File

@ -58,7 +58,7 @@ s32 igb_write_8bit_ctrl_reg(struct e1000_hw *hw, u32 reg,
void igb_clear_hw_cntrs_base(struct e1000_hw *hw);
void igb_clear_vfta(struct e1000_hw *hw);
void igb_vfta_set(struct e1000_hw *hw, u32 vid, bool add);
s32 igb_vfta_set(struct e1000_hw *hw, u32 vid, bool add);
void igb_config_collision_dist(struct e1000_hw *hw);
void igb_mta_set(struct e1000_hw *hw, u32 hash_value);
void igb_put_hw_semaphore(struct e1000_hw *hw);

9
drivers/net/igb/igb_main.c
View File

@ -3895,10 +3895,15 @@ static s32 igb_vlvf_set(struct igb_adapter *adapter, u32 vid, bool add, u32 vf)
/* if !enabled we need to set this up in vfta */
if (!(reg & E1000_VLVF_VLANID_ENABLE)) {
/* add VID to filter table */
igb_vfta_set(hw, vid, true);
/* add VID to filter table, if bit already set
* PF must have added it outside of table */
if (igb_vfta_set(hw, vid, true))
reg |= 1 << (E1000_VLVF_POOLSEL_SHIFT +
adapter->vfs_allocated_count);
reg |= E1000_VLVF_VLANID_ENABLE;
}
reg &= ~E1000_VLVF_VLANID_MASK;
reg |= vid;
wr32(E1000_VLVF(i), reg);
return 0;