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ixgbe: change config srrctl to only program one register per VMDq/RSS id

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This change makes it so only one srrctl register is programmed per VMDq id, and if VMDq is not enabled it is one register per RSS queue.  Currently this function is working correctly for the multiqueue RSS and single queue cases, but if any advances features such as VMDq or DCB would have been enabled this function would have caused issues as it was not correct.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Alexander Duyck 2008-08-30 00:29:10 -07:00 committed by Jeff Garzik
parent 1a32bcfb57
commit 3be1adfb91
1 changed files with 14 additions and 9 deletions
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23
drivers/net/ixgbe/ixgbe_main.c
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@ -1417,18 +1417,23 @@ static void ixgbe_configure_srrctl(struct ixgbe_adapter *adapter, int index)
struct ixgbe_ring *rx_ring;
u32 srrctl;
int queue0;
unsigned long *mask, maskval = 1;
long shift, len;
unsigned long mask;
if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) {
mask = (unsigned long *) &adapter->ring_feature[RING_F_RSS].mask;
len = sizeof(adapter->ring_feature[RING_F_RSS].mask) * 8;
/* program one srrctl register per VMDq index */
if (adapter->flags & IXGBE_FLAG_VMDQ_ENABLED) {
long shift, len;
mask = (unsigned long) adapter->ring_feature[RING_F_RSS].mask;
len = sizeof(adapter->ring_feature[RING_F_VMDQ].mask) * 8;
shift = find_first_bit(&mask, len);
queue0 = index & mask;
index = (index & mask) >> shift;
/* program one srrctl per RSS queue since RDRXCTL.MVMEN is enabled */
} else {
mask = &maskval;
len = 1;
mask = (unsigned long) adapter->ring_feature[RING_F_RSS].mask;
queue0 = index & mask;
index = index & mask;
}
shift = find_first_bit(mask, len);
queue0 = index << shift;
rx_ring = &adapter->rx_ring[queue0];
srrctl = IXGBE_READ_REG(&adapter->hw, IXGBE_SRRCTL(index));