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i40e: keep SR-IOV enabled in the case that RSS, VMDQ, FD_SB and DCB are disabled 

Modify the logic in i40e_determine_queue_usage() so that
SR-IOV doesn't get turned off unnecessarily.

Change-ID: I86ca304fa9f742a50e9ea831b887f358a6a9d53d
Signed-off-by: Frank Zhang <frank_1.zhang@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Frank Zhang 2014-05-20 08:01:42 +00:00 committed by Jeff Kirsher
parent a34977ba6c
commit 9aa7e9355d
1 changed files with 13 additions and 3 deletions
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16
drivers/net/ethernet/intel/i40e/i40e_main.c
View File

@ -8180,9 +8180,7 @@ static void i40e_determine_queue_usage(struct i40e_pf *pf)
queues_left = pf->hw.func_caps.num_tx_qp;
if ((queues_left == 1) ||
!(pf->flags & I40E_FLAG_MSIX_ENABLED) ||
!(pf->flags & (I40E_FLAG_RSS_ENABLED | I40E_FLAG_FD_SB_ENABLED |
I40E_FLAG_DCB_ENABLED))) {
!(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
/* one qp for PF, no queues for anything else */
queues_left = 0;
pf->rss_size = pf->num_lan_qps = 1;
@ -8194,6 +8192,18 @@ static void i40e_determine_queue_usage(struct i40e_pf *pf)
I40E_FLAG_DCB_ENABLED |
I40E_FLAG_SRIOV_ENABLED |
I40E_FLAG_VMDQ_ENABLED);
} else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
I40E_FLAG_FD_SB_ENABLED |
I40E_FLAG_DCB_ENABLED))) {
/* one qp for PF */
pf->rss_size = pf->num_lan_qps = 1;
queues_left -= pf->num_lan_qps;
pf->flags &= ~(I40E_FLAG_RSS_ENABLED |
I40E_FLAG_FD_SB_ENABLED |
I40E_FLAG_FD_ATR_ENABLED |
I40E_FLAG_DCB_ENABLED |
I40E_FLAG_VMDQ_ENABLED);
} else {
/* Not enough queues for all TCs */
if ((pf->flags & I40E_FLAG_DCB_ENABLED) &&