diff options
| author | PJ Waskiewicz <peter.p.waskiewicz.jr@intel.com> | 2009-03-31 21:34:05 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-04-02 01:02:31 -0700 |
| commit | 8be0e4671d6355b2d905cb8fd051393b2cbf9510 (patch) | |
| tree | ee6f9d280d0de7ebc1870150dcd60eb9dcf999ef /drivers/net | |
| parent | cd7664f69fe1f3f75b664503ae3e11a2971a4865 (diff) | |
| download | blackbird-op-linux-8be0e4671d6355b2d905cb8fd051393b2cbf9510.tar.gz blackbird-op-linux-8be0e4671d6355b2d905cb8fd051393b2cbf9510.zip | |
ixgbe: Fix 82598 MSI-X allocation on systems with more than 8 CPU cores
MSI-X allocation broke after the 82599 merge on systems with more than 8
CPU cores. 82598 drops back into MSI mode, which isn't sufficient to run
full, efficient 10G line rate.
Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@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')
| -rw-r--r-- | drivers/net/ixgbe/ixgbe_main.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c index 8f6e263787df..63c0f19c11a3 100644 --- a/drivers/net/ixgbe/ixgbe_main.c +++ b/drivers/net/ixgbe/ixgbe_main.c @@ -2934,6 +2934,7 @@ err_tx_ring_allocation: **/ static int ixgbe_set_interrupt_capability(struct ixgbe_adapter *adapter) { + struct ixgbe_hw *hw = &adapter->hw; int err = 0; int vector, v_budget; @@ -2948,12 +2949,12 @@ static int ixgbe_set_interrupt_capability(struct ixgbe_adapter *adapter) /* * At the same time, hardware can only support a maximum of - * MAX_MSIX_COUNT vectors. With features such as RSS and VMDq, - * we can easily reach upwards of 64 Rx descriptor queues and - * 32 Tx queues. Thus, we cap it off in those rare cases where - * the cpu count also exceeds our vector limit. + * hw.mac->max_msix_vectors vectors. With features + * such as RSS and VMDq, we can easily surpass the number of Rx and Tx + * descriptor queues supported by our device. Thus, we cap it off in + * those rare cases where the cpu count also exceeds our vector limit. */ - v_budget = min(v_budget, MAX_MSIX_COUNT); + v_budget = min(v_budget, (int)hw->mac.max_msix_vectors); /* A failure in MSI-X entry allocation isn't fatal, but it does * mean we disable MSI-X capabilities of the adapter. */ |
