On Mon, Jul 20, 2026 at 09:43:15AM +0800, [email protected] wrote: > From: Wei Fang <[email protected]> > > The VF driver uses alloc_etherdev_mq() with ENETC_MAX_NUM_TXQS as the > queue count, which forces the TX and RX queue counts to be equal and > uses a compile-time constant rather than the actual hardware capability. > > After enetc_get_si_caps() is called, si->num_tx_rings and > si->num_rx_rings reflect the actual number of rings assigned to the VF > by the PF. For the ENETC VF on LS1028A and the upcoming i.MX95/94, their > SoCs have no more than 6 CPUs, and the number of TX/RX rings allocated > to the VF is less than 8. > > Therefore, switch to alloc_etherdev_mqs() so that the TX and RX queue > counts are set independently, each capped at ENETC_MAX_NUM_TXQS, based > on the actual number of rings assigned to the VF by the PF. > > Note that if future SoCs have more than 6 CPUs and more than 6 RX rings > allocated to VFs, the size of the int_vector array in struct > enetc_ndev_priv will need to be modified. Similarly, if more than 8 TX > rings are allocated to each int_vector, ENETC_MAX_NUM_TXQS will also > need to be modified. > > Signed-off-by: Wei Fang <[email protected]> > --- > drivers/net/ethernet/freescale/enetc/enetc_vf.c | 9 ++++++++- > 1 file changed, 8 insertions(+), 1 deletion(-) > > diff --git a/drivers/net/ethernet/freescale/enetc/enetc_vf.c > b/drivers/net/ethernet/freescale/enetc/enetc_vf.c > index 9cdb0a4d6baf..7dcb4a0246f5 100644 > --- a/drivers/net/ethernet/freescale/enetc/enetc_vf.c > +++ b/drivers/net/ethernet/freescale/enetc/enetc_vf.c > @@ -317,7 +317,14 @@ static int enetc_vf_probe(struct pci_dev *pdev, > > enetc_get_si_caps(si); > > - ndev = alloc_etherdev_mq(sizeof(*priv), ENETC_MAX_NUM_TXQS); > + /* Currently, the supported SoCs have a max of 6 CPUs and the VFs > + * have less than 6 RX/TX rings. So no issues for these supported > + * SoCs, but for future SoCs which have more CPUs or more TX/RX > + * rings, all the related logic needs to be improved. > + */ > + ndev = alloc_etherdev_mqs(sizeof(*priv), > + min(si->num_tx_rings, ENETC_MAX_NUM_TXQS), > + min(si->num_rx_rings, ENETC_MAX_NUM_TXQS));
Code looks right, but looks almost like a typo. I guess it would read nicer if ENETC_MAX_NUM_RXQS existed? That said: Reviewed-by: Joe Damato <[email protected]>
