Thread (15 messages) 15 messages, 1 author, 3d ago
WARM1d
Revisions (2)
  1. v1 current
  2. v2 [diff vs current]

[PATCH net-next 13/14] net: enetc: use alloc_etherdev_mqs() to create netdev for VF driver

From: <hidden>
Date: 2026-06-30 07:49:57
Also in: imx, linux-arm-kernel, lkml, netdev
Subsystem: freescale enetc ethernet drivers, networking drivers, the rest · Maintainers: Claudiu Manoil, Vladimir Oltean, Wei Fang, Clark Wang, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds

From: Wei Fang <wei.fang@nxp.com>

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. Switch to alloc_etherdev_mqs() so that the TX and RX queue
counts are set independently based on the real hardware values, avoiding
unnecessary queue structure allocation when the VF has fewer rings than
ENETC_MAX_NUM_TXQS.

Signed-off-by: Wei Fang <wei.fang@nxp.com>
---
 drivers/net/ethernet/freescale/enetc/enetc_vf.c | 3 ++-
 1 file changed, 2 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..3df515a6e333 100644
--- a/drivers/net/ethernet/freescale/enetc/enetc_vf.c
+++ b/drivers/net/ethernet/freescale/enetc/enetc_vf.c
@@ -317,7 +317,8 @@ static int enetc_vf_probe(struct pci_dev *pdev,
 
 	enetc_get_si_caps(si);
 
-	ndev = alloc_etherdev_mq(sizeof(*priv), ENETC_MAX_NUM_TXQS);
+	ndev = alloc_etherdev_mqs(sizeof(*priv), si->num_tx_rings,
+				  si->num_rx_rings);
 	if (!ndev) {
 		err = -ENOMEM;
 		dev_err(&pdev->dev, "netdev creation failed\n");
-- 
2.34.1

Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help