diff options
| author | Emil Tantilov <emil.s.tantilov@intel.com> | 2017-12-11 21:37:04 +0300 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2018-01-26 18:46:50 +0300 |
| commit | 16b359498b12e83b795be160f105d7c3dc4a8bb5 (patch) | |
| tree | 18bae71f71d56385452547f95a512089cbd22d56 /drivers/net/ethernet/intel/ixgbevf/ixgbevf.h | |
| parent | 24bff091d7691c162580bcdb57bb00015471d34e (diff) | |
| download | linux-16b359498b12e83b795be160f105d7c3dc4a8bb5.tar.xz | |
ixgbevf: add support for DMA_ATTR_SKIP_CPU_SYNC/WEAK_ORDERING
Based on commit 5be5955425c2
("igb: update driver to make use of DMA_ATTR_SKIP_CPU_SYNC")
and
commit 7bd175928280 ("igb: Add support for DMA_ATTR_WEAK_ORDERING")
Convert the calls to dma_map/unmap_page() to the attributes version
and add DMA_ATTR_SKIP_CPU_SYNC/WEAK_ORDERING which should help
improve performance on some platforms.
Move sync_for_cpu call before we perform a prefetch to avoid
invalidating the first 128 bytes of the packet on architectures where
that call may invalidate the cache.
Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Krishneil Singh <krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/ixgbevf/ixgbevf.h')
| -rw-r--r-- | drivers/net/ethernet/intel/ixgbevf/ixgbevf.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h b/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h index 581f44bbd7b3..b1da9f41c1dc 100644 --- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h +++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h @@ -260,6 +260,9 @@ static inline void ixgbevf_write_tail(struct ixgbevf_ring *ring, u32 value) #define MIN_MSIX_Q_VECTORS 1 #define MIN_MSIX_COUNT (MIN_MSIX_Q_VECTORS + NON_Q_VECTORS) +#define IXGBEVF_RX_DMA_ATTR \ + (DMA_ATTR_SKIP_CPU_SYNC | DMA_ATTR_WEAK_ORDERING) + /* board specific private data structure */ struct ixgbevf_adapter { /* this field must be first, see ixgbevf_process_skb_fields */ |