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i40e: Fix kdump failure

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kdump fails in the system when used in conjunction with Ethernet driver
X722/X710. This is mainly because when we are resource constrained i.e.
when we have just one online_cpus, we are enabling VMDq and iWARP. It
doesn't make sense to enable them with just one CPU and starve kdump
for lack of IRQs.

So don't enable VMDq or iWARP when we just have a single CPU.

Signed-off-by: Avinash Dayanand <avinash.dayanand@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:
Avinash Dayanand 2017-12-27 08:22:11 -05:00 committed by Jeff Kirsher
parent 5056716ca2
commit 69399873b6
1 changed files with 2 additions and 2 deletions
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4
drivers/net/ethernet/intel/i40e/i40e_main.c
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@ -11069,13 +11069,13 @@ static int i40e_sw_init(struct i40e_pf *pf)
pf->hw.aq.fw_maj_ver >= 6)
pf->hw_features |= I40E_HW_PTP_L4_CAPABLE;
if (pf->hw.func_caps.vmdq) {
if (pf->hw.func_caps.vmdq && num_online_cpus() != 1) {
pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
pf->flags |= I40E_FLAG_VMDQ_ENABLED;
pf->num_vmdq_qps = i40e_default_queues_per_vmdq(pf);
}
if (pf->hw.func_caps.iwarp) {
if (pf->hw.func_caps.iwarp && num_online_cpus() != 1) {
pf->flags |= I40E_FLAG_IWARP_ENABLED;
/* IWARP needs one extra vector for CQP just like MISC.*/
pf->num_iwarp_msix = (int)num_online_cpus() + 1;