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| author | Alexander Duyck <alexander.h.duyck@intel.com> | 2011-01-06 14:29:57 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-01-09 23:44:11 -0800 |
| commit | 905e4a4163c4e807daf1f1f6b8f958e762a834a8 (patch) | |
| tree | 4f2a71c7dc5255a1dfb9f4063b94a920a3ada135 /drivers/net/ixgbe/ixgbe_ethtool.c | |
| parent | 2d39d576fad0fd4bb79a0de26fca50a4be1ffdc1 (diff) | |
| download | op-kernel-dev-905e4a4163c4e807daf1f1f6b8f958e762a834a8.zip op-kernel-dev-905e4a4163c4e807daf1f1f6b8f958e762a834a8.tar.gz | |
ixgbe: cleanup flow director hash computation to improve performance
This change cleans up the layout of the flow director data, and the
algorithm used to calculate the hash resulting in a 35x / 3500% performance
increase versus the old flow director hash computation. The overall effect
is only a 1% increase in transactions per second though due to the fact
that only 1 packet in 20 are actually hashed upon.
TCP_RR before:
Socket Size Request Resp. Elapsed Trans.
Send Recv Size Size Time Rate
bytes Bytes bytes bytes secs. per sec
16384 87380 1 1 60.00 23059.27
16384 87380
TCP_RR after:
Socket Size Request Resp. Elapsed Trans.
Send Recv Size Size Time Rate
bytes Bytes bytes bytes secs. per sec
16384 87380 1 1 60.00 23239.98
16384 87380
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Stephen Ko <stephen.s.ko@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/ixgbe/ixgbe_ethtool.c')
| -rw-r--r-- | drivers/net/ixgbe/ixgbe_ethtool.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/ixgbe/ixgbe_ethtool.c b/drivers/net/ixgbe/ixgbe_ethtool.c index a8bab15..76e40e2 100644 --- a/drivers/net/ixgbe/ixgbe_ethtool.c +++ b/drivers/net/ixgbe/ixgbe_ethtool.c @@ -2278,7 +2278,7 @@ static int ixgbe_set_rx_ntuple(struct net_device *dev, { struct ixgbe_adapter *adapter = netdev_priv(dev); struct ethtool_rx_ntuple_flow_spec fs = cmd->fs; - struct ixgbe_atr_input input_struct; + union ixgbe_atr_input input_struct; struct ixgbe_atr_input_masks input_masks; int target_queue; @@ -2293,7 +2293,7 @@ static int ixgbe_set_rx_ntuple(struct net_device *dev, (fs.action < ETHTOOL_RXNTUPLE_ACTION_DROP)) return -EINVAL; - memset(&input_struct, 0, sizeof(struct ixgbe_atr_input)); + memset(&input_struct, 0, sizeof(union ixgbe_atr_input)); memset(&input_masks, 0, sizeof(struct ixgbe_atr_input_masks)); input_masks.src_ip_mask = fs.m_u.tcp_ip4_spec.ip4src; |
