diff options
Diffstat (limited to 'drivers/net/ethernet/intel/ixgbe/ixgbe_main.c')
| -rw-r--r-- | drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 77 |
1 files changed, 35 insertions, 42 deletions
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c index c26ea9437fed..3594b09f4993 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c @@ -1500,12 +1500,19 @@ static void ixgbe_configure_msix(struct ixgbe_adapter *adapter) for (ring = q_vector->tx.ring; ring != NULL; ring = ring->next) ixgbe_set_ivar(adapter, 1, ring->reg_idx, v_idx); - if (q_vector->tx.ring && !q_vector->rx.ring) - /* tx only */ - q_vector->eitr = adapter->tx_eitr_param; - else if (q_vector->rx.ring) - /* rx or mixed */ - q_vector->eitr = adapter->rx_eitr_param; + if (q_vector->tx.ring && !q_vector->rx.ring) { + /* tx only vector */ + if (adapter->tx_itr_setting == 1) + q_vector->itr = IXGBE_10K_ITR; + else + q_vector->itr = adapter->tx_itr_setting; + } else { + /* rx or rx/tx vector */ + if (adapter->rx_itr_setting == 1) + q_vector->itr = IXGBE_20K_ITR; + else + q_vector->itr = adapter->rx_itr_setting; + } ixgbe_write_eitr(q_vector); } @@ -1519,7 +1526,6 @@ static void ixgbe_configure_msix(struct ixgbe_adapter *adapter) case ixgbe_mac_X540: ixgbe_set_ivar(adapter, -1, 1, v_idx); break; - default: break; } @@ -1527,12 +1533,10 @@ static void ixgbe_configure_msix(struct ixgbe_adapter *adapter) /* set up to autoclear timer, and the vectors */ mask = IXGBE_EIMS_ENABLE_MASK; - if (adapter->num_vfs) - mask &= ~(IXGBE_EIMS_OTHER | - IXGBE_EIMS_MAILBOX | - IXGBE_EIMS_LSC); - else - mask &= ~(IXGBE_EIMS_OTHER | IXGBE_EIMS_LSC); + mask &= ~(IXGBE_EIMS_OTHER | + IXGBE_EIMS_MAILBOX | + IXGBE_EIMS_LSC); + IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIAC, mask); } @@ -1577,7 +1581,7 @@ static void ixgbe_update_itr(struct ixgbe_q_vector *q_vector, * 100-1249MB/s bulk (8000 ints/s) */ /* what was last interrupt timeslice? */ - timepassed_us = 1000000/q_vector->eitr; + timepassed_us = q_vector->itr >> 2; bytes_perint = bytes / timepassed_us; /* bytes/usec */ switch (itr_setting) { @@ -1618,7 +1622,7 @@ void ixgbe_write_eitr(struct ixgbe_q_vector *q_vector) struct ixgbe_adapter *adapter = q_vector->adapter; struct ixgbe_hw *hw = &adapter->hw; int v_idx = q_vector->v_idx; - u32 itr_reg = EITR_INTS_PER_SEC_TO_REG(q_vector->eitr); + u32 itr_reg = q_vector->itr; switch (adapter->hw.mac.type) { case ixgbe_mac_82598EB: @@ -1628,15 +1632,6 @@ void ixgbe_write_eitr(struct ixgbe_q_vector *q_vector) case ixgbe_mac_82599EB: case ixgbe_mac_X540: /* - * 82599 and X540 can support a value of zero, so allow it for - * max interrupt rate, but there is an errata where it can - * not be zero with RSC - */ - if (itr_reg == 8 && - !(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)) - itr_reg = 0; - - /* * set the WDIS bit to not clear the timer bits and cause an * immediate assertion of the interrupt */ @@ -1650,7 +1645,7 @@ void ixgbe_write_eitr(struct ixgbe_q_vector *q_vector) static void ixgbe_set_itr(struct ixgbe_q_vector *q_vector) { - u32 new_itr = q_vector->eitr; + u32 new_itr = q_vector->itr; u8 current_itr; ixgbe_update_itr(q_vector, &q_vector->tx); @@ -1661,24 +1656,25 @@ static void ixgbe_set_itr(struct ixgbe_q_vector *q_vector) switch (current_itr) { /* counts and packets in update_itr are dependent on these numbers */ case lowest_latency: - new_itr = 100000; + new_itr = IXGBE_100K_ITR; break; case low_latency: - new_itr = 20000; /* aka hwitr = ~200 */ + new_itr = IXGBE_20K_ITR; break; case bulk_latency: - new_itr = 8000; + new_itr = IXGBE_8K_ITR; break; default: break; } - if (new_itr != q_vector->eitr) { + if (new_itr != q_vector->itr) { /* do an exponential smoothing */ - new_itr = ((q_vector->eitr * 9) + new_itr)/10; + new_itr = (10 * new_itr * q_vector->itr) / + ((9 * new_itr) + q_vector->itr); /* save the algorithm value here */ - q_vector->eitr = new_itr; + q_vector->itr = new_itr & IXGBE_MAX_EITR; ixgbe_write_eitr(q_vector); } @@ -2301,10 +2297,15 @@ static inline void ixgbe_irq_disable(struct ixgbe_adapter *adapter) **/ static void ixgbe_configure_msi_and_legacy(struct ixgbe_adapter *adapter) { - struct ixgbe_hw *hw = &adapter->hw; + struct ixgbe_q_vector *q_vector = adapter->q_vector[0]; - IXGBE_WRITE_REG(hw, IXGBE_EITR(0), - EITR_INTS_PER_SEC_TO_REG(adapter->rx_eitr_param)); + /* rx/tx vector */ + if (adapter->rx_itr_setting == 1) + q_vector->itr = IXGBE_20K_ITR; + else + q_vector->itr = adapter->rx_itr_setting; + + ixgbe_write_eitr(q_vector); ixgbe_set_ivar(adapter, 0, 0, 0); ixgbe_set_ivar(adapter, 1, 0, 0); @@ -4613,12 +4614,6 @@ static int ixgbe_alloc_q_vectors(struct ixgbe_adapter *adapter) if (!alloc_cpumask_var(&q_vector->affinity_mask, GFP_KERNEL)) goto err_out; cpumask_set_cpu(v_idx, q_vector->affinity_mask); - - if (q_vector->tx.count && !q_vector->rx.count) - q_vector->eitr = adapter->tx_eitr_param; - else - q_vector->eitr = adapter->rx_eitr_param; - netif_napi_add(adapter->netdev, &q_vector->napi, ixgbe_poll, 64); adapter->q_vector[v_idx] = q_vector; @@ -4864,9 +4859,7 @@ static int __devinit ixgbe_sw_init(struct ixgbe_adapter *adapter) /* enable itr by default in dynamic mode */ adapter->rx_itr_setting = 1; - adapter->rx_eitr_param = 20000; adapter->tx_itr_setting = 1; - adapter->tx_eitr_param = 10000; /* set defaults for eitr in MegaBytes */ adapter->eitr_low = 10; |