diff options
| author |   Anjali Singhai Jain <anjali.singhai@intel.com> | 2015-06-05 12:20:30 -0400 |
|---|---|---|
| committer |   Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2015-08-05 16:53:45 -0700 |
| commit | 8e0764b4d6be42459b6f517e199b8c7df43cc15c (patch) | |
| tree | 7369095ee459220d9f35b5b931a40783610289ac /drivers/net/ethernet/intel/i40e/i40e_txrx.h | |
| parent | i40e/i40evf: RSS changes for X722 (diff) | |
| download | linux-dev-8e0764b4d6be42459b6f517e199b8c7df43cc15c.tar.xz linux-dev-8e0764b4d6be42459b6f517e199b8c7df43cc15c.zip | |
i40e/i40evf: Add support for writeback on ITR feature for X722
X722 fixes an issue from X710 where TX descriptor WB would not happen if
the interrupts were disabled. In order for the write backs to happen a
bit needs to be set in the dynamic interrupt control register called
WB_ON_ITR. With this feature, the SW driver need not arm SW interrupts to
work around the issue in X710.
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com>
Tested-by: Jim Young <james.m.young@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 | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.h b/drivers/net/ethernet/intel/i40e/i40e_txrx.h index 8b618d0151cd..0e40994500c1 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_txrx.h +++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.h @@ -265,6 +265,8 @@ struct i40e_ring { bool ring_active; /* is ring online or not */ bool arm_wb; /* do something to arm write back */ + u16 flags; +#define I40E_TXR_FLAGS_WB_ON_ITR BIT(0) /* stats structs */ struct i40e_queue_stats stats; struct u64_stats_sync syncp; |