commit 905e4a4163c4e807daf1f1f6b8f958e762a834a8
author Alexander Duyck <alexander.h.duyck@intel.com> Thu Jan 06 14:29:57 2011 +0000
committer David S. Miller <davem@davemloft.net> Sun Jan 09 23:44:11 2011 -0800
tree 4f2a71c7dc5255a1dfb9f4063b94a920a3ada135
parent 2d39d576fad0fd4bb79a0de26fca50a4be1ffdc1

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>

drivers/net/ixgbe/ixgbe.h

diff --git a/drivers/net/ixgbe/ixgbe.h b/drivers/net/ixgbe/ixgbe.h
index bdeaa9e..2666e69 100644
--- a/drivers/net/ixgbe/ixgbe.h
+++ b/drivers/net/ixgbe/ixgbe.h
@@ -526,25 +526,25 @@
 extern s32 ixgbe_init_fdir_signature_82599(struct ixgbe_hw *hw, u32 pballoc);
 extern s32 ixgbe_init_fdir_perfect_82599(struct ixgbe_hw *hw, u32 pballoc);
 extern s32 ixgbe_fdir_add_signature_filter_82599(struct ixgbe_hw *hw,
-                                                 struct ixgbe_atr_input *input,
+                                                 union ixgbe_atr_input *input,
                                                  u8 queue);
 extern s32 ixgbe_fdir_add_perfect_filter_82599(struct ixgbe_hw *hw,
-                                      struct ixgbe_atr_input *input,
+                                      union ixgbe_atr_input *input,
                                       struct ixgbe_atr_input_masks *input_masks,
                                       u16 soft_id, u8 queue);
-extern s32 ixgbe_atr_set_vlan_id_82599(struct ixgbe_atr_input *input,
+extern s32 ixgbe_atr_set_vlan_id_82599(union ixgbe_atr_input *input,
                                        u16 vlan_id);
-extern s32 ixgbe_atr_set_src_ipv4_82599(struct ixgbe_atr_input *input,
+extern s32 ixgbe_atr_set_src_ipv4_82599(union ixgbe_atr_input *input,
                                         u32 src_addr);
-extern s32 ixgbe_atr_set_dst_ipv4_82599(struct ixgbe_atr_input *input,
+extern s32 ixgbe_atr_set_dst_ipv4_82599(union ixgbe_atr_input *input,
                                         u32 dst_addr);
-extern s32 ixgbe_atr_set_src_port_82599(struct ixgbe_atr_input *input,
+extern s32 ixgbe_atr_set_src_port_82599(union ixgbe_atr_input *input,
                                         u16 src_port);
-extern s32 ixgbe_atr_set_dst_port_82599(struct ixgbe_atr_input *input,
+extern s32 ixgbe_atr_set_dst_port_82599(union ixgbe_atr_input *input,
                                         u16 dst_port);
-extern s32 ixgbe_atr_set_flex_byte_82599(struct ixgbe_atr_input *input,
+extern s32 ixgbe_atr_set_flex_byte_82599(union ixgbe_atr_input *input,
                                          u16 flex_byte);
-extern s32 ixgbe_atr_set_l4type_82599(struct ixgbe_atr_input *input,
+extern s32 ixgbe_atr_set_l4type_82599(union ixgbe_atr_input *input,
                                       u8 l4type);
 extern void ixgbe_configure_rscctl(struct ixgbe_adapter *adapter,
                                    struct ixgbe_ring *ring);