From 2e6632579150bd77c979ae920fb49af2c6d057ae Mon Sep 17 00:00:00 2001 From: Robin Jarry Date: Fri, 9 Jan 2026 15:21:30 +0100 Subject: [PATCH] iavf: fix reported max TX and RX queues in ethdev info With a regular iavf device, rte_eth_dev_info_get reports 256 maximum TX and RX queues. Trying to configure a port with 20 queues returns an error: ERR: IAVF_DRIVER: iavf_dev_configure(): large VF is not supported When the large VF feature isn't supported by the PF kernel driver, ethdev info must not report 256 supported queues but 16. Fixes: e436cd43835b ("net/iavf: negotiate large VF and request more queues") Cc: stable@dpdk.org Signed-off-by: Robin Jarry Acked-by: Bruce Richardson Signed-off-by: 0-day Robot --- drivers/net/intel/iavf/iavf_ethdev.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/net/intel/iavf/iavf_ethdev.c b/drivers/net/intel/iavf/iavf_ethdev.c index 15e49fe2481..59328ebc5ad 100644 --- a/drivers/net/intel/iavf/iavf_ethdev.c +++ b/drivers/net/intel/iavf/iavf_ethdev.c @@ -1126,12 +1126,18 @@ iavf_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info) struct iavf_adapter *adapter = IAVF_DEV_PRIVATE_TO_ADAPTER(dev->data->dev_private); struct iavf_info *vf = &adapter->vf; + uint16_t max_queue_pairs; if (adapter->closed) return -EIO; - dev_info->max_rx_queues = IAVF_MAX_NUM_QUEUES_LV; - dev_info->max_tx_queues = IAVF_MAX_NUM_QUEUES_LV; + if (vf->vf_res->vf_cap_flags & VIRTCHNL_VF_LARGE_NUM_QPAIRS) + max_queue_pairs = IAVF_MAX_NUM_QUEUES_LV; + else + max_queue_pairs = IAVF_MAX_NUM_QUEUES_DFLT; + + dev_info->max_rx_queues = max_queue_pairs; + dev_info->max_tx_queues = max_queue_pairs; dev_info->min_rx_bufsize = IAVF_BUF_SIZE_MIN; dev_info->max_rx_pktlen = IAVF_FRAME_SIZE_MAX; dev_info->max_mtu = dev_info->max_rx_pktlen - IAVF_ETH_OVERHEAD;