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Message-Id: <1316148173-11209-4-git-send-email-jeffrey.t.kirsher@intel.com>
Date: Thu, 15 Sep 2011 21:42:45 -0700
From: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To: davem@...emloft.net
Cc: Alexander Duyck <alexander.h.duyck@...el.com>,
netdev@...r.kernel.org, gospo@...hat.com,
Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [net-next 03/11] ixgbe: cleanup allocation and freeing of IRQ affinity hint
From: Alexander Duyck <alexander.h.duyck@...el.com>
The allocation and freeing of the IRQ affinity hint needs some updates
since there are a number of spots where we run into possible issues with
the hint not being correctly updated.
Signed-off-by: Alexander Duyck <alexander.h.duyck@...el.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
---
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 76 ++++++++++++-------------
1 files changed, 36 insertions(+), 40 deletions(-)
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index 3ce0277..73a669d 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -1565,20 +1565,6 @@ static void ixgbe_configure_msix(struct ixgbe_adapter *adapter)
q_vector->eitr = adapter->rx_eitr_param;
ixgbe_write_eitr(q_vector);
- /* If ATR is enabled, set interrupt affinity */
- if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) {
- /*
- * Allocate the affinity_hint cpumask, assign the mask
- * for this vector, and set our affinity_hint for
- * this irq.
- */
- if (!alloc_cpumask_var(&q_vector->affinity_mask,
- GFP_KERNEL))
- return;
- cpumask_set_cpu(v_idx, q_vector->affinity_mask);
- irq_set_affinity_hint(adapter->msix_entries[v_idx].vector,
- q_vector->affinity_mask);
- }
}
switch (adapter->hw.mac.type) {
@@ -2093,18 +2079,17 @@ out:
static int ixgbe_request_msix_irqs(struct ixgbe_adapter *adapter)
{
struct net_device *netdev = adapter->netdev;
- int i, vector, q_vectors, err;
+ int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
+ int vector, err;
int ri = 0, ti = 0;
- /* Decrement for Other and TCP Timer vectors */
- q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
-
err = ixgbe_map_rings_to_vectors(adapter);
if (err)
return err;
for (vector = 0; vector < q_vectors; vector++) {
struct ixgbe_q_vector *q_vector = adapter->q_vector[vector];
+ struct msix_entry *entry = &adapter->msix_entries[vector];
if (q_vector->tx.ring && q_vector->rx.ring) {
snprintf(q_vector->name, sizeof(q_vector->name) - 1,
@@ -2120,14 +2105,19 @@ static int ixgbe_request_msix_irqs(struct ixgbe_adapter *adapter)
/* skip this unused q_vector */
continue;
}
- err = request_irq(adapter->msix_entries[vector].vector,
- &ixgbe_msix_clean_rings, 0, q_vector->name,
- q_vector);
+ err = request_irq(entry->vector, &ixgbe_msix_clean_rings, 0,
+ q_vector->name, q_vector);
if (err) {
e_err(probe, "request_irq failed for MSIX interrupt "
"Error: %d\n", err);
goto free_queue_irqs;
}
+ /* If Flow Director is enabled, set interrupt affinity */
+ if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) {
+ /* assign the mask for this irq */
+ irq_set_affinity_hint(entry->vector,
+ q_vector->affinity_mask);
+ }
}
sprintf(adapter->lsc_int_name, "%s:lsc", netdev->name);
@@ -2141,9 +2131,13 @@ static int ixgbe_request_msix_irqs(struct ixgbe_adapter *adapter)
return 0;
free_queue_irqs:
- for (i = vector - 1; i >= 0; i--)
- free_irq(adapter->msix_entries[--vector].vector,
- adapter->q_vector[i]);
+ while (vector) {
+ vector--;
+ irq_set_affinity_hint(adapter->msix_entries[vector].vector,
+ NULL);
+ free_irq(adapter->msix_entries[vector].vector,
+ adapter->q_vector[vector]);
+ }
adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED;
pci_disable_msix(adapter->pdev);
kfree(adapter->msix_entries);
@@ -2333,14 +2327,19 @@ static void ixgbe_free_irq(struct ixgbe_adapter *adapter)
!adapter->q_vector[i]->tx.ring)
continue;
+ /* clear the affinity_mask in the IRQ descriptor */
+ irq_set_affinity_hint(adapter->msix_entries[i].vector,
+ NULL);
+
free_irq(adapter->msix_entries[i].vector,
adapter->q_vector[i]);
}
-
- ixgbe_reset_q_vectors(adapter);
} else {
free_irq(adapter->pdev->irq, adapter);
}
+
+ /* clear q_vector state information */
+ ixgbe_reset_q_vectors(adapter);
}
/**
@@ -3879,7 +3878,6 @@ void ixgbe_down(struct ixgbe_adapter *adapter)
struct ixgbe_hw *hw = &adapter->hw;
u32 rxctrl;
int i;
- int num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
/* signal that we are down to the interrupt handler */
set_bit(__IXGBE_DOWN, &adapter->state);
@@ -3924,15 +3922,6 @@ void ixgbe_down(struct ixgbe_adapter *adapter)
adapter->vfinfo[i].clear_to_send = 0;
}
- /* Cleanup the affinity_hint CPU mask memory and callback */
- for (i = 0; i < num_q_vectors; i++) {
- struct ixgbe_q_vector *q_vector = adapter->q_vector[i];
- /* clear the affinity_mask in the IRQ descriptor */
- irq_set_affinity_hint(adapter->msix_entries[i]. vector, NULL);
- /* release the CPU mask memory */
- free_cpumask_var(q_vector->affinity_mask);
- }
-
/* disable transmits in the hardware now that interrupts are off */
for (i = 0; i < adapter->num_tx_queues; i++) {
u8 reg_idx = adapter->tx_ring[i]->reg_idx;
@@ -4677,6 +4666,11 @@ static int ixgbe_alloc_q_vectors(struct ixgbe_adapter *adapter)
q_vector->adapter = adapter;
q_vector->v_idx = v_idx;
+ /* Allocate the affinity_hint cpumask, configure the mask */
+ 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
@@ -4694,6 +4688,7 @@ err_out:
v_idx--;
q_vector = adapter->q_vector[v_idx];
netif_napi_del(&q_vector->napi);
+ free_cpumask_var(q_vector->affinity_mask);
kfree(q_vector);
adapter->q_vector[v_idx] = NULL;
}
@@ -4710,17 +4705,18 @@ err_out:
**/
static void ixgbe_free_q_vectors(struct ixgbe_adapter *adapter)
{
- int q_idx, num_q_vectors;
+ int v_idx, num_q_vectors;
if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED)
num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
else
num_q_vectors = 1;
- for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
- struct ixgbe_q_vector *q_vector = adapter->q_vector[q_idx];
- adapter->q_vector[q_idx] = NULL;
+ for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
+ struct ixgbe_q_vector *q_vector = adapter->q_vector[v_idx];
+ adapter->q_vector[v_idx] = NULL;
netif_napi_del(&q_vector->napi);
+ free_cpumask_var(q_vector->affinity_mask);
kfree(q_vector);
}
}
--
1.7.6
--
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