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| author |   Alexander Duyck <alexander.h.duyck@intel.com> | 2018-01-26 08:54:45 -0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-01-29 14:21:01 -0500 |
| commit | 0a797db323a6f74da3f43d5460792989da6617f4 (patch) | |
| tree | 8c76629a886cd74641ff8ae354a3ade6b0d885b3 /drivers/net/ethernet/intel/i40e/i40e_txrx.h | |
| parent | bnxt_en: cleanup DIM work on device shutdown (diff) | |
| download | linux-dev-0a797db323a6f74da3f43d5460792989da6617f4.tar.xz linux-dev-0a797db323a6f74da3f43d5460792989da6617f4.zip | |
i40e/i40evf: Update DESC_NEEDED value to reflect larger value
When compared to ixgbe and other previous Intel drivers the i40e and i40evf
drivers actually reserve 2 additional descriptors in maybe_stop_tx for
cache line alignment. We need to update DESC_NEEDED to reflect this as
otherwise we are more likely to return TX_BUSY which will cause issues with
things like xmit_more.
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>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/intel/i40e/i40e_txrx.h')
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_txrx.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.h b/drivers/net/ethernet/intel/i40e/i40e_txrx.h index d4799b41e98a..701b708628b0 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_txrx.h +++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.h @@ -279,7 +279,7 @@ static inline unsigned int i40e_txd_use_count(unsigned int size) } /* Tx Descriptors needed, worst case */ -#define DESC_NEEDED (MAX_SKB_FRAGS + 4) +#define DESC_NEEDED (MAX_SKB_FRAGS + 6) #define I40E_MIN_DESC_PENDING 4 #define I40E_TX_FLAGS_HW_VLAN BIT(1) |