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-rw-r--r--drivers/net/ethernet/intel/i40evf/i40evf_main.c48
1 files changed, 10 insertions, 38 deletions
diff --git a/drivers/net/ethernet/intel/i40evf/i40evf_main.c b/drivers/net/ethernet/intel/i40evf/i40evf_main.c
index 80ade6510279..69ef6c1d5364 100644
--- a/drivers/net/ethernet/intel/i40evf/i40evf_main.c
+++ b/drivers/net/ethernet/intel/i40evf/i40evf_main.c
@@ -432,52 +432,24 @@ i40evf_map_vector_to_txq(struct i40evf_adapter *adapter, int v_idx, int t_idx)
**/
static int i40evf_map_rings_to_vectors(struct i40evf_adapter *adapter)
{
+ int rings_remaining = adapter->num_active_queues;
+ int ridx = 0, vidx = 0;
int q_vectors;
- int v_start = 0;
- int rxr_idx = 0, txr_idx = 0;
- int rxr_remaining = adapter->num_active_queues;
- int txr_remaining = adapter->num_active_queues;
- int i, j;
- int rqpv, tqpv;
int err = 0;
q_vectors = adapter->num_msix_vectors - NONQ_VECS;
- /* The ideal configuration...
- * We have enough vectors to map one per queue.
- */
- if (q_vectors >= (rxr_remaining * 2)) {
- for (; rxr_idx < rxr_remaining; v_start++, rxr_idx++)
- i40evf_map_vector_to_rxq(adapter, v_start, rxr_idx);
+ for (; ridx < rings_remaining; ridx++) {
+ i40evf_map_vector_to_rxq(adapter, vidx, ridx);
+ i40evf_map_vector_to_txq(adapter, vidx, ridx);
- for (; txr_idx < txr_remaining; v_start++, txr_idx++)
- i40evf_map_vector_to_txq(adapter, v_start, txr_idx);
- goto out;
- }
-
- /* If we don't have enough vectors for a 1-to-1
- * mapping, we'll have to group them so there are
- * multiple queues per vector.
- * Re-adjusting *qpv takes care of the remainder.
- */
- for (i = v_start; i < q_vectors; i++) {
- rqpv = DIV_ROUND_UP(rxr_remaining, q_vectors - i);
- for (j = 0; j < rqpv; j++) {
- i40evf_map_vector_to_rxq(adapter, i, rxr_idx);
- rxr_idx++;
- rxr_remaining--;
- }
- }
- for (i = v_start; i < q_vectors; i++) {
- tqpv = DIV_ROUND_UP(txr_remaining, q_vectors - i);
- for (j = 0; j < tqpv; j++) {
- i40evf_map_vector_to_txq(adapter, i, txr_idx);
- txr_idx++;
- txr_remaining--;
- }
+ /* In the case where we have more queues than vectors, continue
+ * round-robin on vectors until all queues are mapped.
+ */
+ if (++vidx >= q_vectors)
+ vidx = 0;
}
-out:
adapter->aq_required |= I40EVF_FLAG_AQ_MAP_VECTORS;
return err;