diff options
| author | Alexander Duyck <alexander.h.duyck@intel.com> | 2017-02-07 05:25:26 +0300 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2017-03-17 22:11:43 +0300 |
| commit | 7bd175928280c3e5d741cb9948cffaa61b7cc7c6 (patch) | |
| tree | 2b698687a870115e62e1cf74a553ecb51e397e08 | |
| parent | fe723dff0fa4181ddb8116e72bc67d00d4239cb6 (diff) | |
| download | linux-7bd175928280c3e5d741cb9948cffaa61b7cc7c6.tar.xz | |
igb: Add support for DMA_ATTR_WEAK_ORDERING
Since we are already using DMA attributes in igb for Rx there is no reason
why we can't also apply DMA_ATTR_WEAK_ORDERING which is needed on some
platforms to improve performance.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| -rw-r--r-- | drivers/net/ethernet/intel/igb/igb.h | 3 | ||||
| -rw-r--r-- | drivers/net/ethernet/intel/igb/igb_main.c | 6 |
2 files changed, 6 insertions, 3 deletions
diff --git a/drivers/net/ethernet/intel/igb/igb.h b/drivers/net/ethernet/intel/igb/igb.h index acbc3abe2ddd..87c9fe9d6f18 100644 --- a/drivers/net/ethernet/intel/igb/igb.h +++ b/drivers/net/ethernet/intel/igb/igb.h @@ -148,6 +148,9 @@ struct vf_data_storage { /* How many Rx Buffers do we bundle into one write to the hardware ? */ #define IGB_RX_BUFFER_WRITE 16 /* Must be power of 2 */ +#define IGB_RX_DMA_ATTR \ + (DMA_ATTR_SKIP_CPU_SYNC | DMA_ATTR_WEAK_ORDERING) + #define AUTO_ALL_MODES 0 #define IGB_EEPROM_APME 0x0400 diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c index be456bae8169..cf7ee9cdac6f 100644 --- a/drivers/net/ethernet/intel/igb/igb_main.c +++ b/drivers/net/ethernet/intel/igb/igb_main.c @@ -3963,7 +3963,7 @@ static void igb_clean_rx_ring(struct igb_ring *rx_ring) buffer_info->dma, PAGE_SIZE, DMA_FROM_DEVICE, - DMA_ATTR_SKIP_CPU_SYNC); + IGB_RX_DMA_ATTR); __page_frag_cache_drain(buffer_info->page, buffer_info->pagecnt_bias); @@ -6990,7 +6990,7 @@ static struct sk_buff *igb_fetch_rx_buffer(struct igb_ring *rx_ring, */ dma_unmap_page_attrs(rx_ring->dev, rx_buffer->dma, PAGE_SIZE, DMA_FROM_DEVICE, - DMA_ATTR_SKIP_CPU_SYNC); + IGB_RX_DMA_ATTR); __page_frag_cache_drain(page, rx_buffer->pagecnt_bias); } @@ -7250,7 +7250,7 @@ static bool igb_alloc_mapped_page(struct igb_ring *rx_ring, /* map page for use */ dma = dma_map_page_attrs(rx_ring->dev, page, 0, PAGE_SIZE, - DMA_FROM_DEVICE, DMA_ATTR_SKIP_CPU_SYNC); + DMA_FROM_DEVICE, IGB_RX_DMA_ATTR); /* if mapping failed free memory back to system since * there isn't much point in holding memory we can't use |