[dpdk-dev,2/2] i40e: fix of configuring inside NIC RX interrupt
Commit Message
Inside NIC RX interrupt is needed for single RX descriptor
write back. The fix is to correct the wrong configuration
of register 'I40E_QINT_RQCTL'.
Note that interrupt will be inside NIC only, that means it
will never be reported outside NIC hardware.
Signed-off-by: Helin Zhang <helin.zhang@intel.com>
---
lib/librte_pmd_i40e/i40e_ethdev.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
@@ -580,8 +580,6 @@ i40e_vsi_queues_bind_intr(struct i40e_vsi *vsi)
uint32_t val;
struct i40e_hw *hw = I40E_VSI_TO_HW(vsi);
uint16_t msix_vect = vsi->msix_intr;
- uint16_t interval =
- i40e_calc_itr_interval(RTE_LIBRTE_I40E_ITR_INTERVAL);
int i;
for (i = 0; i < vsi->nb_qps; i++)
@@ -590,7 +588,7 @@ i40e_vsi_queues_bind_intr(struct i40e_vsi *vsi)
/* Bind all RX queues to allocated MSIX interrupt */
for (i = 0; i < vsi->nb_qps; i++) {
val = (msix_vect << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
- (interval << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
+ I40E_QINT_RQCTL_ITR_INDX_MASK |
((vsi->base_queue + i + 1) <<
I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT) |
(0 << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT) |
@@ -603,6 +601,9 @@ i40e_vsi_queues_bind_intr(struct i40e_vsi *vsi)
/* Write first RX queue to Link list register as the head element */
if (vsi->type != I40E_VSI_SRIOV) {
+ uint16_t interval =
+ i40e_calc_itr_interval(RTE_LIBRTE_I40E_ITR_INTERVAL);
+
I40E_WRITE_REG(hw, I40E_PFINT_LNKLSTN(msix_vect - 1),
(vsi->base_queue <<
I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT) |