diff options
| author | Jesse Brandeburg <jesse.brandeburg@intel.com> | 2009-06-04 16:02:04 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-06-07 05:20:25 -0700 |
| commit | ae540af18597a441bf17a26389179465ea4b9c36 (patch) | |
| tree | 384ed42717b548fd4ba70f869c64d852afe20938 /drivers | |
| parent | c4cf55e5d2e9353c6054eb0e22fc1d0a9a48f045 (diff) | |
| download | linux-ae540af18597a441bf17a26389179465ea4b9c36.tar.bz2 | |
ixgbe: Re-adjust ring layouts to have better cacheline efficiency
This patch rearranges the ixgbe_ring struct to make better use of
cacheline efficiency.
Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@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')
| -rw-r--r-- | drivers/net/ixgbe/ixgbe.h | 35 |
1 files changed, 19 insertions, 16 deletions
diff --git a/drivers/net/ixgbe/ixgbe.h b/drivers/net/ixgbe/ixgbe.h index f2206e2a2425..cd22323cfd22 100644 --- a/drivers/net/ixgbe/ixgbe.h +++ b/drivers/net/ixgbe/ixgbe.h @@ -121,19 +121,18 @@ struct ixgbe_queue_stats { struct ixgbe_ring { void *desc; /* descriptor ring memory */ - dma_addr_t dma; /* phys. address of descriptor ring */ - unsigned int size; /* length in bytes */ - unsigned int count; /* amount of descriptors */ - unsigned int next_to_use; - unsigned int next_to_clean; - u8 atr_sample_rate; - u8 atr_count; - - int queue_index; /* needed for multiqueue queue management */ union { struct ixgbe_tx_buffer *tx_buffer_info; struct ixgbe_rx_buffer *rx_buffer_info; }; + u8 atr_sample_rate; + u8 atr_count; + u16 count; /* amount of descriptors */ + u16 rx_buf_len; + u16 next_to_use; + u16 next_to_clean; + + u8 queue_index; /* needed for multiqueue queue management */ u16 head; u16 tail; @@ -141,20 +140,24 @@ struct ixgbe_ring { unsigned int total_bytes; unsigned int total_packets; - u16 reg_idx; /* holds the special value that gets the hardware register - * offset associated with this ring, which is different - * for DCB and RSS modes */ - #ifdef CONFIG_IXGBE_DCA /* cpu for tx queue */ int cpu; #endif + + u16 work_limit; /* max work per interrupt */ + u16 reg_idx; /* holds the special value that gets + * the hardware register offset + * associated with this ring, which is + * different for DCB and RSS modes + */ + struct ixgbe_queue_stats stats; unsigned long reinit_state; + u64 rsc_count; /* stat for coalesced packets */ - u16 work_limit; /* max work per interrupt */ - u16 rx_buf_len; - u64 rsc_count; /* stat for coalesced packets */ + unsigned int size; /* length in bytes */ + dma_addr_t dma; /* phys. address of descriptor ring */ }; enum ixgbe_ring_f_enum { |