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bnxt_en: Store the maximum NQs available on the PF.

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The PF has a pool of NQs and MSIX vectors assigned to it based on
NVRAM configurations.  The number of usable MSIX vectors on the PF
is the minimum of the NQs and MSIX vectors.  Any excess NQs without
associated MSIX may be used for the VFs, so we need to store this
max_nqs value.  max_nqs minus the NQs used by the PF will be the
available NQs for the VFs.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Chan 2018-12-16 18:46:19 -05:00 committed by David S. Miller
parent 11789039da
commit f7588cd893
2 changed files with 5 additions and 1 deletions
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5
drivers/net/ethernet/broadcom/bnxt/bnxt.c
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@ -6221,7 +6221,7 @@ int bnxt_hwrm_func_resc_qcaps(struct bnxt *bp, bool all)
if (bp->flags & BNXT_FLAG_CHIP_P5) {
u16 max_msix = le16_to_cpu(resp->max_msix);
hw_resc->max_irqs = min_t(u16, hw_resc->max_irqs, max_msix);
hw_resc->max_nqs = max_msix;
hw_resc->max_hw_ring_grps = hw_resc->max_rx_rings;
}
@ -7059,6 +7059,9 @@ static unsigned int bnxt_get_max_func_irqs(struct bnxt *bp)
{
struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
if (bp->flags & BNXT_FLAG_CHIP_P5)
return min_t(unsigned int, hw_resc->max_irqs, hw_resc->max_nqs);
return min_t(unsigned int, hw_resc->max_irqs, hw_resc->max_cp_rings);
}

1
drivers/net/ethernet/broadcom/bnxt/bnxt.h
View File

@ -927,6 +927,7 @@ struct bnxt_hw_resc {
u16 resv_vnics;
u16 min_stat_ctxs;
u16 max_stat_ctxs;
u16 max_nqs;
u16 max_irqs;
u16 resv_irqs;
};