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nfp: allow non-equal distribution of IRQs

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Thus far the code assumed all vNICs will request similar number of IRQs.
This will be no longer true with control vNICs (where 1 IRQ will suffice).

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jakub Kicinski 2017-06-05 17:01:55 -07:00 committed by David S. Miller
parent 6d4b0d8ed6
commit 2c7e41c0b2
1 changed files with 2 additions and 1 deletions
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3
drivers/net/ethernet/netronome/nfp/nfp_net_main.c
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@ -420,7 +420,8 @@ static int nfp_net_pf_alloc_irqs(struct nfp_pf *pf)
list_for_each_entry(nn, &pf->vnics, vnic_list) {
unsigned int n;
n = DIV_ROUND_UP(irqs_left, vnics_left);
n = min(NFP_NET_NON_Q_VECTORS + nn->dp.num_r_vecs,
DIV_ROUND_UP(irqs_left, vnics_left));
nfp_net_irqs_assign(nn, &pf->irq_entries[num_irqs - irqs_left],
n);
irqs_left -= n;