diff options
| author | Alexander Duyck <alexander.h.duyck@intel.com> | 2018-01-26 19:54:45 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-01-29 22:21:01 +0300 |
| commit | 0a797db323a6f74da3f43d5460792989da6617f4 (patch) | |
| tree | 8c76629a886cd74641ff8ae354a3ade6b0d885b3 | |
| parent | 0bc0b97fca73fca19edd0bd1463972144b44abaa (diff) | |
| download | linux-0a797db323a6f74da3f43d5460792989da6617f4.tar.xz | |
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>
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_txrx.h | 2 | ||||
| -rw-r--r-- | drivers/net/ethernet/intel/i40evf/i40e_txrx.h | 2 |
2 files changed, 2 insertions, 2 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) diff --git a/drivers/net/ethernet/intel/i40evf/i40e_txrx.h b/drivers/net/ethernet/intel/i40evf/i40e_txrx.h index e72f16b4555b..7798a6645c3f 100644 --- a/drivers/net/ethernet/intel/i40evf/i40e_txrx.h +++ b/drivers/net/ethernet/intel/i40evf/i40e_txrx.h @@ -260,7 +260,7 @@ 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) |