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i40e/i40evf: Use ring pointers to clean up _set_itr_per_queue
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This change cleans up the i40e/i40evf_set_itr_per_queue function by
dropping all the unneeded pointer chases. Instead we can just pull out the
pointers for the Tx and Rx rings and use them throughout the function.

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>
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Alexander Duyck authored and Jeff Kirsher committed Jan 26, 2018
1 parent e0f60a8 commit b5b5f37
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Showing 2 changed files with 26 additions and 24 deletions.
22 changes: 12 additions & 10 deletions drivers/net/ethernet/intel/i40e/i40e_ethtool.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2305,33 +2305,35 @@ static void i40e_set_itr_per_queue(struct i40e_vsi *vsi,
struct ethtool_coalesce *ec,
int queue)
{
struct i40e_ring *rx_ring = vsi->rx_rings[queue];
struct i40e_ring *tx_ring = vsi->tx_rings[queue];
struct i40e_pf *pf = vsi->back;
struct i40e_hw *hw = &pf->hw;
struct i40e_q_vector *q_vector;
u16 vector, intrl;

intrl = i40e_intrl_usec_to_reg(vsi->int_rate_limit);

vsi->rx_rings[queue]->rx_itr_setting = ec->rx_coalesce_usecs;
vsi->tx_rings[queue]->tx_itr_setting = ec->tx_coalesce_usecs;
rx_ring->rx_itr_setting = ec->rx_coalesce_usecs;
tx_ring->tx_itr_setting = ec->tx_coalesce_usecs;

if (ec->use_adaptive_rx_coalesce)
vsi->rx_rings[queue]->rx_itr_setting |= I40E_ITR_DYNAMIC;
rx_ring->rx_itr_setting |= I40E_ITR_DYNAMIC;
else
vsi->rx_rings[queue]->rx_itr_setting &= ~I40E_ITR_DYNAMIC;
rx_ring->rx_itr_setting &= ~I40E_ITR_DYNAMIC;

if (ec->use_adaptive_tx_coalesce)
vsi->tx_rings[queue]->tx_itr_setting |= I40E_ITR_DYNAMIC;
tx_ring->tx_itr_setting |= I40E_ITR_DYNAMIC;
else
vsi->tx_rings[queue]->tx_itr_setting &= ~I40E_ITR_DYNAMIC;
tx_ring->tx_itr_setting &= ~I40E_ITR_DYNAMIC;

q_vector = vsi->rx_rings[queue]->q_vector;
q_vector->rx.itr = ITR_TO_REG(vsi->rx_rings[queue]->rx_itr_setting);
q_vector = rx_ring->q_vector;
q_vector->rx.itr = ITR_TO_REG(rx_ring->rx_itr_setting);
vector = vsi->base_vector + q_vector->v_idx;
wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1), q_vector->rx.itr);

q_vector = vsi->tx_rings[queue]->q_vector;
q_vector->tx.itr = ITR_TO_REG(vsi->tx_rings[queue]->tx_itr_setting);
q_vector = tx_ring->q_vector;
q_vector->tx.itr = ITR_TO_REG(tx_ring->tx_itr_setting);
vector = vsi->base_vector + q_vector->v_idx;
wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1), q_vector->tx.itr);

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28 changes: 14 additions & 14 deletions drivers/net/ethernet/intel/i40evf/i40evf_ethtool.c
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Original file line number Diff line number Diff line change
Expand Up @@ -512,31 +512,31 @@ static void i40evf_set_itr_per_queue(struct i40evf_adapter *adapter,
struct ethtool_coalesce *ec,
int queue)
{
struct i40e_ring *rx_ring = &adapter->rx_rings[queue];
struct i40e_ring *tx_ring = &adapter->tx_rings[queue];
struct i40e_vsi *vsi = &adapter->vsi;
struct i40e_hw *hw = &adapter->hw;
struct i40e_q_vector *q_vector;
u16 vector;

adapter->rx_rings[queue].rx_itr_setting = ec->rx_coalesce_usecs;
adapter->tx_rings[queue].tx_itr_setting = ec->tx_coalesce_usecs;
rx_ring->rx_itr_setting = ec->rx_coalesce_usecs;
tx_ring->tx_itr_setting = ec->tx_coalesce_usecs;

if (ec->use_adaptive_rx_coalesce)
adapter->rx_rings[queue].rx_itr_setting |= I40E_ITR_DYNAMIC;
else
adapter->rx_rings[queue].rx_itr_setting &= ~I40E_ITR_DYNAMIC;
rx_ring->rx_itr_setting |= I40E_ITR_DYNAMIC;
if (!ec->use_adaptive_rx_coalesce)
rx_ring->rx_itr_setting ^= I40E_ITR_DYNAMIC;

if (ec->use_adaptive_tx_coalesce)
adapter->tx_rings[queue].tx_itr_setting |= I40E_ITR_DYNAMIC;
else
adapter->tx_rings[queue].tx_itr_setting &= ~I40E_ITR_DYNAMIC;
tx_ring->tx_itr_setting |= I40E_ITR_DYNAMIC;
if (!ec->use_adaptive_tx_coalesce)
tx_ring->tx_itr_setting ^= I40E_ITR_DYNAMIC;

q_vector = adapter->rx_rings[queue].q_vector;
q_vector->rx.itr = ITR_TO_REG(adapter->rx_rings[queue].rx_itr_setting);
q_vector = rx_ring->q_vector;
q_vector->rx.itr = ITR_TO_REG(rx_ring->rx_itr_setting);
vector = vsi->base_vector + q_vector->v_idx;
wr32(hw, I40E_VFINT_ITRN1(I40E_RX_ITR, vector - 1), q_vector->rx.itr);

q_vector = adapter->tx_rings[queue].q_vector;
q_vector->tx.itr = ITR_TO_REG(adapter->tx_rings[queue].tx_itr_setting);
q_vector = tx_ring->q_vector;
q_vector->tx.itr = ITR_TO_REG(tx_ring->tx_itr_setting);
vector = vsi->base_vector + q_vector->v_idx;
wr32(hw, I40E_VFINT_ITRN1(I40E_TX_ITR, vector - 1), q_vector->tx.itr);

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