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i40evf: allocate queue vectors dynamically

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Change the queue_vector array from a statically-sized member of the
adapter structure to a dynamically-allocated and -sized array.

This reduces the size of the adapter structure, and allows us to support
any number of queue vectors in the future without changing the code.

Change-ID: I08dc622cb2f2ad01e832e51c1ad9b86524730693
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Mitch Williams 2015-10-26 19:44:39 -04:00 committed by Jeff Kirsher
parent e743072fd1
commit 7d96ba1a8b
4 changed files with 21 additions and 26 deletions
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5
drivers/net/ethernet/intel/i40evf/i40evf.h
View File

@ -145,9 +145,6 @@ struct i40e_q_vector {
#define OTHER_VECTOR 1
#define NONQ_VECS (OTHER_VECTOR)
#define MAX_MSIX_Q_VECTORS 4
#define MAX_MSIX_COUNT 5
#define MIN_MSIX_Q_VECTORS 1
#define MIN_MSIX_COUNT (MIN_MSIX_Q_VECTORS + NONQ_VECS)
@ -193,7 +190,7 @@ struct i40evf_adapter {
struct work_struct reset_task;
struct work_struct adminq_task;
struct delayed_work init_task;
struct i40e_q_vector *q_vector[MAX_MSIX_Q_VECTORS];
struct i40e_q_vector *q_vectors;
struct list_head vlan_filter_list;
char misc_vector_name[IFNAMSIZ + 9];
int num_active_queues;

2
drivers/net/ethernet/intel/i40evf/i40evf_ethtool.c
View File

@ -351,7 +351,7 @@ static int i40evf_set_coalesce(struct net_device *netdev,
vsi->tx_itr_setting &= ~I40E_ITR_DYNAMIC;
for (i = 0; i < adapter->num_msix_vectors - NONQ_VECS; i++) {
q_vector = adapter->q_vector[i];
q_vector = &adapter->q_vectors[i];
q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
wr32(hw, I40E_VFINT_ITRN1(0, i), q_vector->rx.itr);
q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);

38
drivers/net/ethernet/intel/i40evf/i40evf_main.c
View File

@ -347,7 +347,7 @@ static irqreturn_t i40evf_msix_clean_rings(int irq, void *data)
static void
i40evf_map_vector_to_rxq(struct i40evf_adapter *adapter, int v_idx, int r_idx)
{
struct i40e_q_vector *q_vector = adapter->q_vector[v_idx];
struct i40e_q_vector *q_vector = &adapter->q_vectors[v_idx];
struct i40e_ring *rx_ring = adapter->rx_rings[r_idx];
rx_ring->q_vector = q_vector;
@ -368,7 +368,7 @@ i40evf_map_vector_to_rxq(struct i40evf_adapter *adapter, int v_idx, int r_idx)
static void
i40evf_map_vector_to_txq(struct i40evf_adapter *adapter, int v_idx, int t_idx)
{
struct i40e_q_vector *q_vector = adapter->q_vector[v_idx];
struct i40e_q_vector *q_vector = &adapter->q_vectors[v_idx];
struct i40e_ring *tx_ring = adapter->tx_rings[t_idx];
tx_ring->q_vector = q_vector;
@ -464,7 +464,7 @@ static void i40evf_netpoll(struct net_device *netdev)
return;
for (i = 0; i < q_vectors; i++)
i40evf_msix_clean_rings(0, adapter->q_vector[i]);
i40evf_msix_clean_rings(0, &adapter->q_vectors[i]);
}
#endif
@ -486,7 +486,7 @@ i40evf_request_traffic_irqs(struct i40evf_adapter *adapter, char *basename)
q_vectors = adapter->num_msix_vectors - NONQ_VECS;
for (vector = 0; vector < q_vectors; vector++) {
struct i40e_q_vector *q_vector = adapter->q_vector[vector];
struct i40e_q_vector *q_vector = &adapter->q_vectors[vector];
if (q_vector->tx.ring && q_vector->rx.ring) {
snprintf(q_vector->name, sizeof(q_vector->name) - 1,
@ -531,7 +531,7 @@ free_queue_irqs:
adapter->msix_entries[vector + NONQ_VECS].vector,
NULL);
free_irq(adapter->msix_entries[vector + NONQ_VECS].vector,
adapter->q_vector[vector]);
&adapter->q_vectors[vector]);
}
return err;
}
@ -581,7 +581,7 @@ static void i40evf_free_traffic_irqs(struct i40evf_adapter *adapter)
irq_set_affinity_hint(adapter->msix_entries[i+1].vector,
NULL);
free_irq(adapter->msix_entries[i+1].vector,
adapter->q_vector[i]);
&adapter->q_vectors[i]);
}
}
@ -953,7 +953,7 @@ static void i40evf_napi_enable_all(struct i40evf_adapter *adapter)
for (q_idx = 0; q_idx < q_vectors; q_idx++) {
struct napi_struct *napi;
q_vector = adapter->q_vector[q_idx];
q_vector = &adapter->q_vectors[q_idx];
napi = &q_vector->napi;
napi_enable(napi);
}
@ -970,7 +970,7 @@ static void i40evf_napi_disable_all(struct i40evf_adapter *adapter)
int q_vectors = adapter->num_msix_vectors - NONQ_VECS;
for (q_idx = 0; q_idx < q_vectors; q_idx++) {
q_vector = adapter->q_vector[q_idx];
q_vector = &adapter->q_vectors[q_idx];
napi_disable(&q_vector->napi);
}
}
@ -1483,21 +1483,22 @@ static int i40evf_init_rss(struct i40evf_adapter *adapter)
**/
static int i40evf_alloc_q_vectors(struct i40evf_adapter *adapter)
{
int q_idx, num_q_vectors;
int q_idx = 0, num_q_vectors;
struct i40e_q_vector *q_vector;
num_q_vectors = adapter->num_msix_vectors - NONQ_VECS;
adapter->q_vectors = kzalloc(sizeof(*q_vector) * num_q_vectors,
GFP_KERNEL);
if (!adapter->q_vectors)
goto err_out;
for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
q_vector = kzalloc(sizeof(*q_vector), GFP_KERNEL);
if (!q_vector)
goto err_out;
q_vector = &adapter->q_vectors[q_idx];
q_vector->adapter = adapter;
q_vector->vsi = &adapter->vsi;
q_vector->v_idx = q_idx;
netif_napi_add(adapter->netdev, &q_vector->napi,
i40evf_napi_poll, NAPI_POLL_WEIGHT);
adapter->q_vector[q_idx] = q_vector;
}
return 0;
@ -1505,11 +1506,10 @@ static int i40evf_alloc_q_vectors(struct i40evf_adapter *adapter)
err_out:
while (q_idx) {
q_idx--;
q_vector = adapter->q_vector[q_idx];
q_vector = &adapter->q_vectors[q_idx];
netif_napi_del(&q_vector->napi);
kfree(q_vector);
adapter->q_vector[q_idx] = NULL;
}
kfree(adapter->q_vectors);
return -ENOMEM;
}
@ -1530,13 +1530,11 @@ static void i40evf_free_q_vectors(struct i40evf_adapter *adapter)
napi_vectors = adapter->num_active_queues;
for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
struct i40e_q_vector *q_vector = adapter->q_vector[q_idx];
adapter->q_vector[q_idx] = NULL;
struct i40e_q_vector *q_vector = &adapter->q_vectors[q_idx];
if (q_idx < napi_vectors)
netif_napi_del(&q_vector->napi);
kfree(q_vector);
}
kfree(adapter->q_vectors);
}
/**

2
drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c
View File

@ -360,7 +360,7 @@ void i40evf_map_queues(struct i40evf_adapter *adapter)
vimi->num_vectors = adapter->num_msix_vectors;
/* Queue vectors first */
for (v_idx = 0; v_idx < q_vectors; v_idx++) {
q_vector = adapter->q_vector[v_idx];
q_vector = adapter->q_vectors + v_idx;
vimi->vecmap[v_idx].vsi_id = adapter->vsi_res->vsi_id;
vimi->vecmap[v_idx].vector_id = v_idx + NONQ_VECS;
vimi->vecmap[v_idx].txq_map = q_vector->ring_mask;