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ixgbe: Add function for setting XPS queue mapping

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This change adds support for ixgbe to configure the XPS queue mapping on
load.  The result of this change is that on open we will now be resetting
the number of Tx queues, and then setting the default configuration for XPS
based on if ATR is enabled or disabled.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Reviewed-by: John Fastabend <john.r.fastabend@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Alexander Duyck 2013-01-12 06:33:31 +00:00 committed by Jeff Kirsher
parent d3cb98691f
commit fd786b7b47
3 changed files with 20 additions and 5 deletions
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1
drivers/net/ethernet/intel/ixgbe/ixgbe.h
View File

@ -201,6 +201,7 @@ struct ixgbe_rx_queue_stats {
enum ixgbe_ring_state_t {
__IXGBE_TX_FDIR_INIT_DONE,
__IXGBE_TX_XPS_INIT_DONE,
__IXGBE_TX_DETECT_HANG,
__IXGBE_HANG_CHECK_ARMED,
__IXGBE_RX_RSC_ENABLED,

8
drivers/net/ethernet/intel/ixgbe/ixgbe_lib.c
View File

@ -771,21 +771,25 @@ static int ixgbe_alloc_q_vector(struct ixgbe_adapter *adapter,
{
struct ixgbe_q_vector *q_vector;
struct ixgbe_ring *ring;
int node = -1;
int node = NUMA_NO_NODE;
int cpu = -1;
int ring_count, size;
u8 tcs = netdev_get_num_tc(adapter->netdev);
ring_count = txr_count + rxr_count;
size = sizeof(struct ixgbe_q_vector) +
(sizeof(struct ixgbe_ring) * ring_count);
/* customize cpu for Flow Director mapping */
if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) {
if ((tcs <= 1) && !(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) {
u16 rss_i = adapter->ring_feature[RING_F_RSS].indices;
if (rss_i > 1 && adapter->atr_sample_rate) {
if (cpu_online(v_idx)) {
cpu = v_idx;
node = cpu_to_node(cpu);
}
}
}
/* allocate q_vector and rings */
q_vector = kzalloc_node(size, GFP_KERNEL, node);

10
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
View File

@ -2813,6 +2813,16 @@ void ixgbe_configure_tx_ring(struct ixgbe_adapter *adapter,
ring->atr_sample_rate = 0;
}
/* initialize XPS */
if (!test_and_set_bit(__IXGBE_TX_XPS_INIT_DONE, &ring->state)) {
struct ixgbe_q_vector *q_vector = ring->q_vector;
if (q_vector)
netif_set_xps_queue(adapter->netdev,
&q_vector->affinity_mask,
ring->queue_index);
}
clear_bit(__IXGBE_HANG_CHECK_ARMED, &ring->state);
/* enable queue */