bnxt_en: fix NQ resource accounting during vf creation on 57500 chips

[ Upstream commit 09a89cc59ad67794a11e1d3dd13c5b3172adcc51 ]

There are 2 issues:

1. We should decrement hw_resc->max_nqs instead of hw_resc->max_irqs
   with the number of NQs assigned to the VFs.  The IRQs are fixed
   on each function and cannot be re-assigned.  Only the NQs are being
   assigned to the VFs.

2. vf_msix is the total number of NQs to be assigned to the VFs.  So
   we should decrement vf_msix from hw_resc->max_nqs.

Fixes: b16b68918674 ("bnxt_en: Add SR-IOV support for 57500 chips.")
Signed-off-by: Vikas Gupta <vikas.gupta@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c
index 70d8ca3039dcb9f9914ed6b3ffb6fb2ded4257bc..78763f5027d10a3c26c73ea2cae93a1194068f2e 100644 (file)
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c
@@ -623,7 +623,7 @@ static int bnxt_hwrm_func_vf_resc_cfg(struct bnxt *bp, int num_vfs, bool reset)
                hw_resc->max_stat_ctxs -= le16_to_cpu(req->min_stat_ctx) * n;
                hw_resc->max_vnics -= le16_to_cpu(req->min_vnics) * n;
                if (bp->flags & BNXT_FLAG_CHIP_P5)
-                       hw_resc->max_irqs -= vf_msix * n;
+                       hw_resc->max_nqs -= vf_msix;
 
                rc = pf->active_vfs;
        }