From: Jakub Kicinski <jakub.kicinski@netronome.com>
Date: Mon, 5 Jun 2017 17:01:55 -0700
Subject: nfp: allow non-equal distribution of IRQs
Patch-mainline: v4.13-rc1
Git-commit: 2c7e41c0b2f103056f93dd5922c03d6e2021c76d
References: bsc#1055968
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>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/netronome/nfp/nfp_net_main.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/net/ethernet/netronome/nfp/nfp_net_main.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net_main.c
@@ -420,7 +420,8 @@ static int nfp_net_pf_alloc_irqs(struct
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;