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i40evf: Allow for an abundance of vectors 

The driver currently only maps TX and RX queues to a single MSI-X vector
per queue pair if there are exactly enough vectors for this.
Unfortunately, if we have too many vectors it will fail and allocate
queues to vectors in a suboptimal manner. Change the condition check to
allow for excess vectors. In this case, the extras just won't be used.

Change-ID: I23e1e2955c64739c86612db88a25583e6a7e0b17
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Mitch Williams 2015-04-27 14:57:09 -04:00 committed by Jeff Kirsher
parent 489ce7a463
commit 973371da4d
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/intel/i40evf/i40evf_main.c
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@ -406,7 +406,7 @@ static int i40evf_map_rings_to_vectors(struct i40evf_adapter *adapter)
/* The ideal configuration...
* We have enough vectors to map one per queue.
*/
if (q_vectors == (rxr_remaining * 2)) {
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);