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| author |   Alexander Duyck <alexander.h.duyck@intel.com> | 2017-02-21 15:55:39 -0800 |
|---|---|---|
| committer |   Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2017-03-27 16:45:13 -0700 |
| commit | 1793668c3b8c18ede309dfec30f7c486cca00d28 (patch) | |
| tree | 8dcc358ec947b10a27f4a263c43aee5984d16df6 /drivers/net/ethernet/intel/i40e/i40e_txrx.h | |
| parent | ipv6: sr: select DST_CACHE by default (diff) | |
| download | linux-dev-1793668c3b8c18ede309dfec30f7c486cca00d28.tar.xz linux-dev-1793668c3b8c18ede309dfec30f7c486cca00d28.zip | |
i40e/i40evf: Update code to better handle incrementing page count
Update the driver code so that we do bulk updates of the page reference
count instead of just incrementing it by one reference at a time. The
advantage to doing this is that we cut down on atomic operations and
this in turn should give us a slight improvement in cycles per packet.
In addition if we eventually move this over to using build_skb the gains
will be more noticeable.
I also found and fixed a store forwarding stall from where we were
assigning "*new_buff = *old_buff". By breaking it up into individual
copies we can avoid this and as a result the performance is slightly
improved.
Change-ID: I1d3880dece4133eca3c32423b04a5467321ccc52
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/i40e/i40e_txrx.h')
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_txrx.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.h b/drivers/net/ethernet/intel/i40e/i40e_txrx.h index 49c7b2089d8e..77c3e96f5172 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_txrx.h +++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.h @@ -258,7 +258,12 @@ struct i40e_tx_buffer { struct i40e_rx_buffer { dma_addr_t dma; struct page *page; - unsigned int page_offset; +#if (BITS_PER_LONG > 32) || (PAGE_SIZE >= 65536) + __u32 page_offset; +#else + __u16 page_offset; +#endif + __u16 pagecnt_bias; }; struct i40e_queue_stats { |