patch 'net/iavf: fix reported max Tx and Rx queues' has been queued to stable release 24.11.5

[luca.boccassi at gmail.com]

Hi,

FYI, your patch has been queued to stable release 24.11.5

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 02/22/26. So please
shout if anyone has objections.

Also note that after the patch there's a diff of the upstream commit vs the
patch applied to the branch. This will indicate if there was any rebasing
needed to apply to the stable branch. If there were code changes for rebasing
(ie: not only metadata diffs), please double check that the rebase was
correctly done.

Queued patches are on a temporary branch at:
https://github.com/bluca/dpdk-stable

This queued commit can be viewed at:
https://github.com/bluca/dpdk-stable/commit/be6f265b817caffc0d9127f5f8d0d9324df0e9ed

Thanks.

Luca Boccassi

---
>From be6f265b817caffc0d9127f5f8d0d9324df0e9ed Mon Sep 17 00:00:00 2001
From: Robin Jarry <rjarry at redhat.com>
Date: Fri, 9 Jan 2026 15:21:30 +0100
Subject: [PATCH] net/iavf: fix reported max Tx and Rx queues

[ upstream commit 23bd0b1785d6b6e8c935f30fc214381794f1b299 ]

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")

Signed-off-by: Robin Jarry <rjarry at redhat.com>
Acked-by: Bruce Richardson <bruce.richardson at intel.com>
---
 drivers/net/iavf/iavf_ethdev.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/net/iavf/iavf_ethdev.c b/drivers/net/iavf/iavf_ethdev.c
index 70ce389a37..1f3ef074f7 100644
--- a/drivers/net/iavf/iavf_ethdev.c
+++ b/drivers/net/iavf/iavf_ethdev.c
@@ -1125,12 +1125,18 @@ 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;
-- 
2.47.3

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2026-02-20 14:55:45.316421264 +0000
+++ 0053-net-iavf-fix-reported-max-Tx-and-Rx-queues.patch	2026-02-20 14:55:43.236191617 +0000
@@ -1 +1 @@
-From 23bd0b1785d6b6e8c935f30fc214381794f1b299 Mon Sep 17 00:00:00 2001
+From be6f265b817caffc0d9127f5f8d0d9324df0e9ed Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit 23bd0b1785d6b6e8c935f30fc214381794f1b299 ]
+
@@ -16 +17,0 @@
-Cc: stable at dpdk.org
@@ -21 +22 @@
- drivers/net/intel/iavf/iavf_ethdev.c | 10 ++++++++--
+ drivers/net/iavf/iavf_ethdev.c | 10 ++++++++--
@@ -24,5 +25,5 @@
-diff --git a/drivers/net/intel/iavf/iavf_ethdev.c b/drivers/net/intel/iavf/iavf_ethdev.c
-index 7dc3a2a6d0..ad48386343 100644
---- a/drivers/net/intel/iavf/iavf_ethdev.c
-+++ b/drivers/net/intel/iavf/iavf_ethdev.c
-@@ -1124,12 +1124,18 @@ iavf_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
+diff --git a/drivers/net/iavf/iavf_ethdev.c b/drivers/net/iavf/iavf_ethdev.c
+index 70ce389a37..1f3ef074f7 100644
+--- a/drivers/net/iavf/iavf_ethdev.c
++++ b/drivers/net/iavf/iavf_ethdev.c
+@@ -1125,12 +1125,18 @@ iavf_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)