diff options
Diffstat (limited to 'drivers/net/ethernet/intel/ice/ice_txrx.c')
| -rw-r--r-- | drivers/net/ethernet/intel/ice/ice_txrx.c | 26 |
1 files changed, 15 insertions, 11 deletions
diff --git a/drivers/net/ethernet/intel/ice/ice_txrx.c b/drivers/net/ethernet/intel/ice/ice_txrx.c index 1373b97b117a..8f908af9bdd5 100644 --- a/drivers/net/ethernet/intel/ice/ice_txrx.c +++ b/drivers/net/ethernet/intel/ice/ice_txrx.c @@ -1361,21 +1361,25 @@ static void ice_enable_interrupt(struct ice_q_vector *q_vector) if (test_bit(ICE_DOWN, vsi->state)) return; - /* When exiting WB_ON_ITR, let ITR resume its normal - * interrupts-enabled path. + /* trigger an ITR delayed software interrupt when exiting busy poll, to + * make sure to catch any pending cleanups that might have been missed + * due to interrupt state transition. If busy poll or poll isn't + * enabled, then don't update ITR, and just enable the interrupt. */ - if (wb_en) + if (!wb_en) { + itr_val = ice_buildreg_itr(ICE_ITR_NONE, 0); + } else { q_vector->wb_on_itr = false; - itr_val = ice_buildreg_itr(ICE_ITR_NONE, 0); - /* trigger an immediate software interrupt when exiting - * busy poll, to make sure to catch any pending cleanups - * that might have been missed due to interrupt state - * transition. - */ - if (wb_en) { + /* do two things here with a single write. Set up the third ITR + * index to be used for software interrupt moderation, and then + * trigger a software interrupt with a rate limit of 20K on + * software interrupts, this will help avoid high interrupt + * loads due to frequently polling and exiting polling. + */ + itr_val = ice_buildreg_itr(ICE_IDX_ITR2, ICE_ITR_20K); itr_val |= GLINT_DYN_CTL_SWINT_TRIG_M | - GLINT_DYN_CTL_SW_ITR_INDX_M | + ICE_IDX_ITR2 << GLINT_DYN_CTL_SW_ITR_INDX_S | GLINT_DYN_CTL_SW_ITR_INDX_ENA_M; } wr32(&vsi->back->hw, GLINT_DYN_CTL(q_vector->reg_idx), itr_val); |