[PATCH 0/8] Validate multiqueue configuration in ethdev

[PATCH 0/8] Validate multiqueue configuration in ethdev

[David Marchand]

We have various checks in drivers about Rx and Tx multiqueue
configuration.
This series is a followup of the VMDq cleanup, finishing the job with
DCB and RSS, and then rejecting invalid multiqueue configuration (useful
from an ABI point of view).

Some drivers misreported their capabilities.
It is important drivers maintainers review carefully those changes.


-- 
David Marchand

David Marchand (8):
  net/bnxt: remove leftover VMDq code in MAC helpers
  drivers/net: fix reported VMDq capability
  drivers/net: remove check on VMDq modes
  devtools: check VMDq capability
  ethdev: check DCB availability
  drivers/net: fix reported RSS capability
  ethdev: check RSS availability
  ethdev: check unknown Rx/Tx multi-queue modes

 devtools/check-doc-vs-code.sh             | 70 ++++++++++++++++++++++-
 doc/guides/nics/features/failsafe.ini     |  2 +
 doc/guides/nics/features/nbl.ini          |  1 +
 doc/guides/nics/features/netvsc.ini       |  1 +
 doc/guides/rel_notes/release_26_11.rst    | 14 ++++-
 drivers/net/atlantic/atl_ethdev.c         |  2 -
 drivers/net/bnxt/bnxt_ethdev.c            | 65 +++++----------------
 drivers/net/bnxt/bnxt_rxq.c               | 14 +----
 drivers/net/cnxk/cnxk_ethdev.c            | 11 ----
 drivers/net/cnxk/cnxk_rep_ops.c           | 16 +-----
 drivers/net/cxgbe/cxgbe_ethdev.c          |  1 -
 drivers/net/dpaa/dpaa_ethdev.c            |  1 -
 drivers/net/dpaa2/dpaa2_ethdev.c          |  1 -
 drivers/net/hns3/hns3_dcb.c               |  9 ---
 drivers/net/intel/cpfl/cpfl_ethdev.c      | 19 +-----
 drivers/net/intel/cpfl/cpfl_representor.c |  4 +-
 drivers/net/intel/e1000/igb_ethdev.c      | 21 +------
 drivers/net/intel/e1000/igb_rxtx.c        | 39 -------------
 drivers/net/intel/e1000/igc_ethdev.c      | 19 ------
 drivers/net/intel/fm10k/fm10k_ethdev.c    | 14 +----
 drivers/net/intel/i40e/i40e_ethdev.c      |  5 --
 drivers/net/intel/idpf/idpf_ethdev.c      |  9 +--
 drivers/net/intel/ixgbe/ixgbe_ethdev.c    |  4 --
 drivers/net/mvneta/mvneta_ethdev.c        |  7 ---
 drivers/net/mvpp2/mrvl_ethdev.c           |  7 ---
 drivers/net/nbl/nbl_dev/nbl_dev.c         |  6 --
 drivers/net/nfp/nfp_net_common.c          | 15 -----
 drivers/net/ngbe/ngbe_ethdev_vf.c         |  1 -
 drivers/net/octeontx/octeontx_ethdev.c    | 11 ----
 drivers/net/qede/qede_ethdev.c            |  5 --
 drivers/net/sfc/sfc_repr.c                | 16 +-----
 drivers/net/sfc/sfc_rx.c                  | 21 +------
 drivers/net/sfc/sfc_tx.c                  |  9 ---
 drivers/net/thunderx/nicvf_ethdev.c       | 12 ----
 drivers/net/txgbe/txgbe_ethdev_vf.c       |  1 -
 drivers/net/virtio/virtio_ethdev.c        | 14 -----
 drivers/net/xsc/xsc_ethdev.c              |  2 +
 drivers/net/zxdh/zxdh_ethdev.c            | 19 ------
 lib/ethdev/rte_ethdev.c                   | 41 +++++++++++++
 39 files changed, 155 insertions(+), 374 deletions(-)

-- 
2.54.0

[PATCH 1/8] net/bnxt: remove leftover VMDq code in MAC helpers

[David Marchand]

The VMDq support removal left dead code in MAC address removal and
filter restore functions.
Remove the VMDq flag checks and pool_mask logic that are no longer needed.

At the same time, remove unneeded reset to 0 of VMDq related field in
the dev_info structure.

Fixes: 582f971526da ("net/bnxt: remove VMDq support")

Signed-off-by: David Marchand <david.marchand@redhat.com>
---
 drivers/net/bnxt/bnxt_ethdev.c | 65 +++++++---------------------------
 1 file changed, 13 insertions(+), 52 deletions(-)

diff --git a/drivers/net/bnxt/bnxt_ethdev.c b/drivers/net/bnxt/bnxt_ethdev.c
index 23edd94444..e811651413 100644
--- a/drivers/net/bnxt/bnxt_ethdev.c
+++ b/drivers/net/bnxt/bnxt_ethdev.c
@@ -1252,12 +1252,6 @@ static int bnxt_dev_info_get_op(struct rte_eth_dev *eth_dev,
 	 * TODO: default_rxconf, default_txconf, rx_desc_lim, and tx_desc_lim
 	 *       need further investigation.
 	 */
-	dev_info->max_vmdq_pools = 0;
-	dev_info->vmdq_queue_num = 0;
-
-	dev_info->vmdq_pool_base = 0;
-	dev_info->vmdq_queue_base = 0;
-
 	dev_info->rx_seg_capa.max_nseg = BNXT_MAX_BUFFER_SPLIT_SEGS;
 	dev_info->rx_seg_capa.multi_pools = BNXT_MULTI_POOL_BUF_SPLIT_CAP;
 	dev_info->rx_seg_capa.offset_allowed = BNXT_BUF_SPLIT_OFFSET_CAP;
@@ -1999,39 +1993,23 @@ static void bnxt_mac_addr_remove_op(struct rte_eth_dev *eth_dev,
 				    uint32_t index)
 {
 	struct bnxt *bp = eth_dev->data->dev_private;
-	uint64_t pool_mask;
 	struct bnxt_vnic_info *vnic;
 	struct bnxt_filter_info *filter, *temp_filter;
-	uint32_t i;
 
 	if (is_bnxt_in_error(bp))
 		return;
 
-	if ((eth_dev->data->dev_conf.rxmode.mq_mode & RTE_ETH_MQ_RX_VMDQ_FLAG) == 0)
-		pool_mask = 1;
-	else
-		pool_mask = eth_dev->data->mac_pool_sel[index];
-
-	/*
-	 * Loop through all VNICs from the specified filter flow pools to
-	 * remove the corresponding MAC addr filter
-	 */
-	for (i = 0; i < bp->nr_vnics; i++) {
-		if (!(pool_mask & (1ULL << i)))
-			continue;
-
-		vnic = &bp->vnic_info[i];
-		filter = STAILQ_FIRST(&vnic->filter);
-		while (filter) {
-			temp_filter = STAILQ_NEXT(filter, next);
-			if (filter->mac_index == index) {
-				STAILQ_REMOVE(&vnic->filter, filter,
-						bnxt_filter_info, next);
-				bnxt_hwrm_clear_l2_filter(bp, filter);
-				bnxt_free_filter(bp, filter);
-			}
-			filter = temp_filter;
+	vnic = &bp->vnic_info[0];
+	filter = STAILQ_FIRST(&vnic->filter);
+	while (filter) {
+		temp_filter = STAILQ_NEXT(filter, next);
+		if (filter->mac_index == index) {
+			STAILQ_REMOVE(&vnic->filter, filter,
+					bnxt_filter_info, next);
+			bnxt_hwrm_clear_l2_filter(bp, filter);
+			bnxt_free_filter(bp, filter);
 		}
+		filter = temp_filter;
 	}
 }
 
@@ -4528,10 +4506,7 @@ static int bnxt_restore_mac_filters(struct bnxt *bp)
 	struct rte_eth_dev *dev = bp->eth_dev;
 	struct rte_eth_dev_info dev_info;
 	struct rte_ether_addr *addr;
-	uint64_t pool_mask;
-	uint32_t pool = 0;
 	uint32_t i;
-	bool vmdq;
 	int rc;
 
 	if (BNXT_VF(bp) && !BNXT_VF_IS_TRUSTED(bp))
@@ -4541,8 +4516,6 @@ static int bnxt_restore_mac_filters(struct bnxt *bp)
 	if (rc)
 		return rc;
 
-	vmdq = (dev->data->dev_conf.rxmode.mq_mode & RTE_ETH_MQ_RX_VMDQ_FLAG) != 0;
-
 	/* replay MAC address configuration */
 	for (i = 1; i < dev_info.max_mac_addrs; i++) {
 		addr = &dev->data->mac_addrs[i];
@@ -4551,21 +4524,9 @@ static int bnxt_restore_mac_filters(struct bnxt *bp)
 		if (rte_is_zero_ether_addr(addr))
 			continue;
 
-		pool = 0;
-		if (!vmdq)
-			pool_mask = 1;
-		else
-			pool_mask = dev->data->mac_pool_sel[i];
-
-		do {
-			if (pool_mask & 1ULL) {
-				rc = bnxt_mac_addr_add_op(dev, addr, i, pool);
-				if (rc)
-					return rc;
-			}
-			pool_mask >>= 1;
-			pool++;
-		} while (pool_mask);
+		rc = bnxt_mac_addr_add_op(dev, addr, i, 0);
+		if (rc)
+			return rc;
 	}
 
 	return 0;
-- 
2.54.0

[PATCH 2/8] drivers/net: fix reported VMDq capability

[David Marchand]

Some PF drivers (dpaa, dpaa2) and VF drivers (ixgbe, ngbe, txgbe)
are announcing some VMDq capability though this support is not documented,
and no action is taken if the feature is requested.

fm10k announces capability for VF device, but rejects it at configure
time.

Some driver forces a 0 value when ethdev already clears the whole
dev_info structure.

Fixes: fe3a45fd4104 ("ixgbe: add VMDq support")
Fixes: 7e72cbfa320b ("fm10k: add reta query/update")
Fixes: 799db4568c76 ("net/dpaa: support device info and speed capability")
Fixes: 762b275f20f8 ("net/dpaa2: add missing device info fields")
Fixes: 5dec0169554b ("net/txgbe: support VF get information")
Fixes: 66070ca419c1 ("net/ngbe: add hardware configuration for VF device")

Signed-off-by: David Marchand <david.marchand@redhat.com>
---
 doc/guides/nics/features/failsafe.ini  | 1 +
 drivers/net/atlantic/atl_ethdev.c      | 2 --
 drivers/net/cxgbe/cxgbe_ethdev.c       | 1 -
 drivers/net/dpaa/dpaa_ethdev.c         | 1 -
 drivers/net/dpaa2/dpaa2_ethdev.c       | 1 -
 drivers/net/intel/fm10k/fm10k_ethdev.c | 9 ++-------
 drivers/net/intel/ixgbe/ixgbe_ethdev.c | 4 ----
 drivers/net/ngbe/ngbe_ethdev_vf.c      | 1 -
 drivers/net/txgbe/txgbe_ethdev_vf.c    | 1 -
 9 files changed, 3 insertions(+), 18 deletions(-)

diff --git a/doc/guides/nics/features/failsafe.ini b/doc/guides/nics/features/failsafe.ini
index c7c696fbbd..09afdc1963 100644
--- a/doc/guides/nics/features/failsafe.ini
+++ b/doc/guides/nics/features/failsafe.ini
@@ -13,6 +13,7 @@ MTU update           = Y
 Promiscuous mode     = Y
 Allmulticast mode    = Y
 Unicast MAC filter   = Y
+VMDq                 = P
 Multicast MAC filter = Y
 VLAN filter          = Y
 Flow control         = Y
diff --git a/drivers/net/atlantic/atl_ethdev.c b/drivers/net/atlantic/atl_ethdev.c
index 24184bdb18..44a65d7557 100644
--- a/drivers/net/atlantic/atl_ethdev.c
+++ b/drivers/net/atlantic/atl_ethdev.c
@@ -1106,8 +1106,6 @@ atl_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
 	dev_info->max_vfs = pci_dev->max_vfs;
 
 	dev_info->max_hash_mac_addrs = 0;
-	dev_info->max_vmdq_pools = 0;
-	dev_info->vmdq_queue_num = 0;
 
 	dev_info->rx_offload_capa = ATL_RX_OFFLOADS;
 
diff --git a/drivers/net/cxgbe/cxgbe_ethdev.c b/drivers/net/cxgbe/cxgbe_ethdev.c
index 82e67eeff1..93554f354c 100644
--- a/drivers/net/cxgbe/cxgbe_ethdev.c
+++ b/drivers/net/cxgbe/cxgbe_ethdev.c
@@ -129,7 +129,6 @@ int cxgbe_dev_info_get(struct rte_eth_dev *eth_dev,
 	device_info->max_mac_addrs = 1;
 	/* XXX: For now we support one MAC/port */
 	device_info->max_vfs = adapter->params.arch.vfcount;
-	device_info->max_vmdq_pools = 0; /* XXX: For now no support for VMDQ */
 
 	device_info->dev_capa &= ~RTE_ETH_DEV_CAPA_FLOW_RULE_KEEP;
 
diff --git a/drivers/net/dpaa/dpaa_ethdev.c b/drivers/net/dpaa/dpaa_ethdev.c
index 1aaf97f175..7d45386a9d 100644
--- a/drivers/net/dpaa/dpaa_ethdev.c
+++ b/drivers/net/dpaa/dpaa_ethdev.c
@@ -662,7 +662,6 @@ static int dpaa_eth_dev_info(struct rte_eth_dev *dev,
 	dev_info->max_mac_addrs = DPAA_MAX_MAC_FILTER;
 	dev_info->max_hash_mac_addrs = 0;
 	dev_info->max_vfs = 0;
-	dev_info->max_vmdq_pools = RTE_ETH_16_POOLS;
 	dev_info->flow_type_rss_offloads = DPAA_RSS_OFFLOAD_ALL;
 
 	if (fif->mac_type == fman_mac_1g) {
diff --git a/drivers/net/dpaa2/dpaa2_ethdev.c b/drivers/net/dpaa2/dpaa2_ethdev.c
index 8ae4fd89c5..07e89d5c39 100644
--- a/drivers/net/dpaa2/dpaa2_ethdev.c
+++ b/drivers/net/dpaa2/dpaa2_ethdev.c
@@ -452,7 +452,6 @@ dpaa2_dev_info_get(struct rte_eth_dev *dev,
 
 	dev_info->max_hash_mac_addrs = 0;
 	dev_info->max_vfs = 0;
-	dev_info->max_vmdq_pools = RTE_ETH_16_POOLS;
 	dev_info->flow_type_rss_offloads = DPAA2_RSS_OFFLOAD_ALL;
 	/* DPAA2 has no software-visible indirection table: incoming packets are
 	 * dispatched to FQs via 'queue_id = hash % dist_size'. We expose the
diff --git a/drivers/net/intel/fm10k/fm10k_ethdev.c b/drivers/net/intel/fm10k/fm10k_ethdev.c
index 3b2daba79e..9b123c0b2c 100644
--- a/drivers/net/intel/fm10k/fm10k_ethdev.c
+++ b/drivers/net/intel/fm10k/fm10k_ethdev.c
@@ -411,7 +411,6 @@ static int
 fm10k_check_mq_mode(struct rte_eth_dev *dev)
 {
 	enum rte_eth_rx_mq_mode rx_mq_mode = dev->data->dev_conf.rxmode.mq_mode;
-	struct fm10k_hw *hw = FM10K_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 	struct rte_eth_vmdq_rx_conf *vmdq_conf;
 	uint16_t nb_rx_q = dev->data->nb_rx_queues;
 
@@ -425,11 +424,6 @@ fm10k_check_mq_mode(struct rte_eth_dev *dev)
 	if (!(rx_mq_mode & RTE_ETH_MQ_RX_VMDQ_FLAG))
 		return 0;
 
-	if (hw->mac.type == fm10k_mac_vf) {
-		PMD_INIT_LOG(ERR, "VMDQ mode is not supported in VF.");
-		return -EINVAL;
-	}
-
 	/* Check VMDQ queue pool number */
 	if (vmdq_conf->nb_queue_pools >
 			sizeof(vmdq_conf->pool_map[0].pools) * CHAR_BIT ||
@@ -1386,7 +1380,8 @@ fm10k_dev_infos_get(struct rte_eth_dev *dev,
 	dev_info->max_vfs            = pdev->max_vfs;
 	dev_info->vmdq_pool_base     = 0;
 	dev_info->vmdq_queue_base    = 0;
-	dev_info->max_vmdq_pools     = RTE_ETH_32_POOLS;
+	if (hw->mac.type != fm10k_mac_vf)
+		dev_info->max_vmdq_pools = RTE_ETH_32_POOLS;
 	dev_info->vmdq_queue_num     = FM10K_MAX_QUEUES_PF;
 	dev_info->rx_queue_offload_capa = fm10k_get_rx_queue_offloads_capa(dev);
 	dev_info->rx_offload_capa = fm10k_get_rx_port_offloads_capa(dev) |
diff --git a/drivers/net/intel/ixgbe/ixgbe_ethdev.c b/drivers/net/intel/ixgbe/ixgbe_ethdev.c
index 44eb932058..50e44484b1 100644
--- a/drivers/net/intel/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/intel/ixgbe/ixgbe_ethdev.c
@@ -4076,10 +4076,6 @@ ixgbevf_dev_info_get(struct rte_eth_dev *dev,
 	dev_info->max_mac_addrs = hw->mac.num_rar_entries;
 	dev_info->max_hash_mac_addrs = IXGBE_VMDQ_NUM_UC_MAC;
 	dev_info->max_vfs = pci_dev->max_vfs;
-	if (hw->mac.type == ixgbe_mac_82598EB)
-		dev_info->max_vmdq_pools = RTE_ETH_16_POOLS;
-	else
-		dev_info->max_vmdq_pools = RTE_ETH_64_POOLS;
 	dev_info->rx_queue_offload_capa = ixgbe_get_rx_queue_offloads(dev);
 	dev_info->rx_offload_capa = (ixgbe_get_rx_port_offloads(dev) |
 				     dev_info->rx_queue_offload_capa);
diff --git a/drivers/net/ngbe/ngbe_ethdev_vf.c b/drivers/net/ngbe/ngbe_ethdev_vf.c
index c440e02369..55cbffaf2c 100644
--- a/drivers/net/ngbe/ngbe_ethdev_vf.c
+++ b/drivers/net/ngbe/ngbe_ethdev_vf.c
@@ -475,7 +475,6 @@ ngbevf_dev_info_get(struct rte_eth_dev *dev,
 	dev_info->max_mac_addrs = hw->mac.num_rar_entries;
 	dev_info->max_hash_mac_addrs = NGBE_VMDQ_NUM_UC_MAC;
 	dev_info->max_vfs = pci_dev->max_vfs;
-	dev_info->max_vmdq_pools = RTE_ETH_64_POOLS;
 	dev_info->rx_queue_offload_capa = ngbe_get_rx_queue_offloads(dev);
 	dev_info->rx_offload_capa = (ngbe_get_rx_port_offloads(dev) |
 				     dev_info->rx_queue_offload_capa);
diff --git a/drivers/net/txgbe/txgbe_ethdev_vf.c b/drivers/net/txgbe/txgbe_ethdev_vf.c
index 341f62bc75..3cf33a8bd6 100644
--- a/drivers/net/txgbe/txgbe_ethdev_vf.c
+++ b/drivers/net/txgbe/txgbe_ethdev_vf.c
@@ -575,7 +575,6 @@ txgbevf_dev_info_get(struct rte_eth_dev *dev,
 	dev_info->max_mac_addrs = hw->mac.num_rar_entries;
 	dev_info->max_hash_mac_addrs = TXGBE_VMDQ_NUM_UC_MAC;
 	dev_info->max_vfs = pci_dev->max_vfs;
-	dev_info->max_vmdq_pools = RTE_ETH_64_POOLS;
 	dev_info->dev_capa &= ~RTE_ETH_DEV_CAPA_FLOW_RULE_KEEP;
 	dev_info->rx_queue_offload_capa = txgbe_get_rx_queue_offloads(dev);
 	dev_info->rx_offload_capa = (txgbe_get_rx_port_offloads(dev) |
-- 
2.54.0

[PATCH 3/8] drivers/net: remove check on VMDq modes

[David Marchand]

ethdev now validates requests for VMDq Rx and Tx modes.
No need to validate again in the driver.

Note:
- for igb, max_vmdq_pools is already 0 for models that do not support
  VMDq, so checking the VMDq modes is unneeded,
- for i40e, the FW flag was already checked to populate max_vmdq_pools,

Signed-off-by: David Marchand <david.marchand@redhat.com>
---
 drivers/net/hns3/hns3_dcb.c          |  9 -------
 drivers/net/intel/e1000/igb_rxtx.c   | 39 ----------------------------
 drivers/net/intel/i40e/i40e_ethdev.c |  5 ----
 3 files changed, 53 deletions(-)

diff --git a/drivers/net/hns3/hns3_dcb.c b/drivers/net/hns3/hns3_dcb.c
index 6d2945d9c5..e7912aebb2 100644
--- a/drivers/net/hns3/hns3_dcb.c
+++ b/drivers/net/hns3/hns3_dcb.c
@@ -1840,7 +1840,6 @@ int
 hns3_check_dev_mq_mode(struct rte_eth_dev *dev)
 {
 	enum rte_eth_rx_mq_mode rx_mq_mode = dev->data->dev_conf.rxmode.mq_mode;
-	enum rte_eth_tx_mq_mode tx_mq_mode = dev->data->dev_conf.txmode.mq_mode;
 	struct hns3_hw *hw = HNS3_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 	struct hns3_adapter *hns = HNS3_DEV_HW_TO_ADAPTER(hw);
 	struct rte_eth_dcb_rx_conf *dcb_rx_conf;
@@ -1849,14 +1848,6 @@ hns3_check_dev_mq_mode(struct rte_eth_dev *dev)
 	int max_tc = 0;
 	int i;
 
-	if (((uint32_t)rx_mq_mode & RTE_ETH_MQ_RX_VMDQ_FLAG) ||
-	    (tx_mq_mode == RTE_ETH_MQ_TX_VMDQ_DCB ||
-	     tx_mq_mode == RTE_ETH_MQ_TX_VMDQ_ONLY)) {
-		hns3_err(hw, "VMDQ is not supported, rx_mq_mode = %d, tx_mq_mode = %d.",
-			 rx_mq_mode, tx_mq_mode);
-		return -EOPNOTSUPP;
-	}
-
 	dcb_rx_conf = &dev->data->dev_conf.rx_adv_conf.dcb_rx_conf;
 	dcb_tx_conf = &dev->data->dev_conf.tx_adv_conf.dcb_tx_conf;
 	if ((uint32_t)rx_mq_mode & RTE_ETH_MQ_RX_DCB_FLAG) {
diff --git a/drivers/net/intel/e1000/igb_rxtx.c b/drivers/net/intel/e1000/igb_rxtx.c
index 4fda5d57a0..ef531f1cd4 100644
--- a/drivers/net/intel/e1000/igb_rxtx.c
+++ b/drivers/net/intel/e1000/igb_rxtx.c
@@ -2113,41 +2113,6 @@ igb_rss_configure(struct rte_eth_dev *dev)
 	igb_hw_rss_hash_set(hw, &rss_conf);
 }
 
-/*
- * Check if the mac type support VMDq or not.
- * Return 1 if it supports, otherwise, return 0.
- */
-static int
-igb_is_vmdq_supported(const struct rte_eth_dev *dev)
-{
-	const struct e1000_hw *hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
-
-	switch (hw->mac.type) {
-	case e1000_82576:
-	case e1000_82580:
-	case e1000_i350:
-		return 1;
-	case e1000_82540:
-	case e1000_82541:
-	case e1000_82542:
-	case e1000_82543:
-	case e1000_82544:
-	case e1000_82545:
-	case e1000_82546:
-	case e1000_82547:
-	case e1000_82571:
-	case e1000_82572:
-	case e1000_82573:
-	case e1000_82574:
-	case e1000_82583:
-	case e1000_i210:
-	case e1000_i211:
-	default:
-		PMD_INIT_LOG(ERR, "Cannot support VMDq feature");
-		return 0;
-	}
-}
-
 static int
 igb_vmdq_rx_hw_configure(struct rte_eth_dev *dev)
 {
@@ -2161,10 +2126,6 @@ igb_vmdq_rx_hw_configure(struct rte_eth_dev *dev)
 	hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 	cfg = &dev->data->dev_conf.rx_adv_conf.vmdq_rx_conf;
 
-	/* Check if mac type can support VMDq, return value of 0 means NOT support */
-	if (igb_is_vmdq_supported(dev) == 0)
-		return -1;
-
 	igb_rss_disable(dev);
 
 	/* RCTL: enable VLAN filter */
diff --git a/drivers/net/intel/i40e/i40e_ethdev.c b/drivers/net/intel/i40e/i40e_ethdev.c
index 41d5586403..2405d9e119 100644
--- a/drivers/net/intel/i40e/i40e_ethdev.c
+++ b/drivers/net/intel/i40e/i40e_ethdev.c
@@ -6655,11 +6655,6 @@ i40e_vmdq_setup(struct rte_eth_dev *dev)
 	 */
 	i40e_pf_disable_irq0(hw);
 
-	if ((pf->flags & I40E_FLAG_VMDQ) == 0) {
-		PMD_INIT_LOG(ERR, "FW doesn't support VMDQ");
-		return -ENOTSUP;
-	}
-
 	conf_vsis = conf->rx_adv_conf.vmdq_rx_conf.nb_queue_pools;
 	if (conf_vsis > pf->max_nb_vmdq_vsi) {
 		PMD_INIT_LOG(ERR, "VMDQ config: %u, max support:%u",
-- 
2.54.0

[PATCH 4/8] devtools: check VMDq capability

[David Marchand]

Let's check that the code and the documentation are aligned for VMDq
capability.

Note: some driver directory hosts multiple drivers that have multiple
corresponding entry in doc/guides/features/. For this case, only try to
detect a discrepancy if all docs agree.

Signed-off-by: David Marchand <david.marchand@redhat.com>
---
 devtools/check-doc-vs-code.sh | 46 ++++++++++++++++++++++++++++++++++-
 1 file changed, 45 insertions(+), 1 deletion(-)

diff --git a/devtools/check-doc-vs-code.sh b/devtools/check-doc-vs-code.sh
index c58c239c87..7936f8b69f 100755
--- a/devtools/check-doc-vs-code.sh
+++ b/devtools/check-doc-vs-code.sh
@@ -28,7 +28,7 @@ changed_files()
 
 has_code_change() # <pattern>
 {
-	test -n "$(git log --format='%h' -S"$1" $trusted_commit..)"
+	test -n "$(git log --format='%h' -G"$1" $trusted_commit..)"
 }
 
 has_file_change() # <pattern>
@@ -53,6 +53,43 @@ all_net_drivers()
 	sort
 }
 
+has_doc_feature() # <ini_file> <feature>
+{
+	grep -q "^$2[[:space:]]*=[[:space:]]*[YP]" "$1"
+}
+
+all_docs_agree() # <driver> <feature>
+{
+	first=""
+	for d in "$rootdir/doc/guides/nics/features/${1}"*.ini; do
+		[ -f "$d" ] || return 1
+		has_doc_feature "$d" "$2" && val=true || val=false
+		[ -n "$first" ] || first=$val
+		[ "$first" = "$val" ] || return 1
+	done
+	return 0
+}
+
+check_mq_caps() # <driver>
+{
+	code=$rootdir/drivers/net/$1
+	doc=$rootdir/doc/guides/nics/features/$1.ini
+	[ -d $code ] || return 0
+	[ -f $doc ] || return 0
+
+	if all_docs_agree $1 "VMDq"; then
+		if has_doc_feature "$doc" "VMDq"; then
+			git grep -qE 'max_vmdq_pools[[:space:]]*=' -- "$code" ||
+				error "VMDq documented but max_vmdq_pools not set for $1"
+		else
+			! git grep -qE 'max_vmdq_pools[[:space:]]*=' -- "$code" ||
+				error "max_vmdq_pools set but VMDq not documented for $1"
+			! git grep -qE 'RTE_ETH_MQ_(RX|TX).*VMDQ' -- "$code" ||
+				error "VMDq mq_mode referenced but VMDq not documented for $1"
+		fi
+	fi
+}
+
 check_rte_flow() # <driver>
 {
 	code=$rootdir/drivers/net/$1
@@ -70,6 +107,7 @@ if [ -z "$trusted_commit" ]; then
 	# check all
 	for driver in $(all_net_drivers); do
 		check_rte_flow $driver
+		check_mq_caps $driver
 	done
 	exit $result
 fi
@@ -81,4 +119,10 @@ if has_code_change 'RTE_FLOW_.*_TYPE_' ||
 		check_rte_flow $driver
 	done
 fi
+if has_code_change 'max_vmdq_pools\|RTE_ETH_MQ_.*VMDQ' ||
+		has_file_change 'doc/guides/nics/features'; then
+	for driver in $(changed_net_drivers); do
+		check_mq_caps $driver
+	done
+fi
 exit $result
-- 
2.54.0

[PATCH 5/8] ethdev: check DCB availability

[David Marchand]

Add DCB capability check in rte_eth_dev_configure() using
dev->dev_ops->get_dcb_info.

When NULL, reject Rx modes with RTE_ETH_MQ_RX_DCB_FLAG and
Tx modes RTE_ETH_MQ_TX_DCB and RTE_ETH_MQ_TX_VMDQ_DCB.
Remove redundant DCB checks from drivers.

Check that documentation is aligned with driver code.

Signed-off-by: David Marchand <david.marchand@redhat.com>
---
 devtools/check-doc-vs-code.sh          | 14 +++++++++++++-
 doc/guides/rel_notes/release_26_11.rst | 11 ++++++++---
 drivers/net/intel/e1000/igb_ethdev.c   |  6 ------
 drivers/net/intel/fm10k/fm10k_ethdev.c |  5 -----
 lib/ethdev/rte_ethdev.c                | 16 ++++++++++++++++
 5 files changed, 37 insertions(+), 15 deletions(-)

diff --git a/devtools/check-doc-vs-code.sh b/devtools/check-doc-vs-code.sh
index 7936f8b69f..81c9713f5a 100755
--- a/devtools/check-doc-vs-code.sh
+++ b/devtools/check-doc-vs-code.sh
@@ -77,6 +77,18 @@ check_mq_caps() # <driver>
 	[ -d $code ] || return 0
 	[ -f $doc ] || return 0
 
+	if all_docs_agree $1 "DCB"; then
+		if has_doc_feature "$doc" "DCB"; then
+			git grep -q '\.get_dcb_info[[:space:]]*=' -- "$code" ||
+				error "DCB documented but no get_dcb_info callback for $1"
+		else
+			! git grep -q '\.get_dcb_info[[:space:]]*=' -- "$code" ||
+				error "get_dcb_info callback but DCB not documented for $1"
+			! git grep -qE 'RTE_ETH_MQ_(RX|TX).*DCB' -- "$code" ||
+				error "DCB mq_mode referenced but DCB not documented for $1"
+		fi
+	fi
+
 	if all_docs_agree $1 "VMDq"; then
 		if has_doc_feature "$doc" "VMDq"; then
 			git grep -qE 'max_vmdq_pools[[:space:]]*=' -- "$code" ||
@@ -119,7 +131,7 @@ if has_code_change 'RTE_FLOW_.*_TYPE_' ||
 		check_rte_flow $driver
 	done
 fi
-if has_code_change 'max_vmdq_pools\|RTE_ETH_MQ_.*VMDQ' ||
+if has_code_change 'get_dcb_info\|max_vmdq_pools\|RTE_ETH_MQ_.*DCB\|RTE_ETH_MQ_.*VMDQ' ||
 		has_file_change 'doc/guides/nics/features'; then
 	for driver in $(changed_net_drivers); do
 		check_mq_caps $driver
diff --git a/doc/guides/rel_notes/release_26_11.rst b/doc/guides/rel_notes/release_26_11.rst
index be758a0c02..9341769c32 100644
--- a/doc/guides/rel_notes/release_26_11.rst
+++ b/doc/guides/rel_notes/release_26_11.rst
@@ -424,11 +424,16 @@ API Changes
   * Removed the ``unused`` field.
   * Changed the ``objs`` array from fixed size to variable size.
 
+* ethdev: Updated multi-queue mode validation at port configuration time:
+
+  * DCB modes (Rx ``RTE_ETH_MQ_RX_DCB_FLAG``, Tx ``RTE_ETH_MQ_TX_DCB``/``RTE_ETH_MQ_TX_VMDQ_DCB``)
+    are rejected if the driver has no ``get_dcb_info`` callback.
+  * VMDq modes (Rx ``RTE_ETH_MQ_RX_VMDQ_FLAG``,
+    Tx ``RTE_ETH_MQ_TX_VMDQ_DCB``/``RTE_ETH_MQ_TX_VMDQ_ONLY``) are rejected
+    if the driver reports no VMDq pool.
+
 * ethdev: Updated VMDq related API.
 
-  * At port configuration time, the number of VMDq pools advertised by a driver
-    is now used to validate VMDq related Rx and Tx modes
-    (``RTE_ETH_MQ_RX_VMDQ_FLAG``, ``RTE_ETH_MQ_TX_VMDQ_DCB``, ``RTE_ETH_MQ_TX_VMDQ_ONLY``).
   * A check was added in ``rte_eth_dev_mac_addr_add`` to validate that
     the ``pool`` parameter is 0 when VMDq is not configured.
   * The ``RTE_ETH_NUM_RECEIVE_MAC_ADDR`` and ``RTE_ETH_VMDQ_NUM_UC_HASH_ARRAY`` macros
diff --git a/drivers/net/intel/e1000/igb_ethdev.c b/drivers/net/intel/e1000/igb_ethdev.c
index 524c030be6..181af58169 100644
--- a/drivers/net/intel/e1000/igb_ethdev.c
+++ b/drivers/net/intel/e1000/igb_ethdev.c
@@ -1144,12 +1144,6 @@ igb_check_mq_mode(struct rte_eth_dev *dev)
 	uint16_t nb_rx_q = dev->data->nb_rx_queues;
 	uint16_t nb_tx_q = dev->data->nb_tx_queues;
 
-	if ((rx_mq_mode & RTE_ETH_MQ_RX_DCB_FLAG) ||
-	    tx_mq_mode == RTE_ETH_MQ_TX_DCB ||
-	    tx_mq_mode == RTE_ETH_MQ_TX_VMDQ_DCB) {
-		PMD_INIT_LOG(ERR, "DCB mode is not supported.");
-		return -EINVAL;
-	}
 	if (RTE_ETH_DEV_SRIOV(dev).active != 0) {
 		/* Check multi-queue mode.
 		 * To no break software we accept RTE_ETH_MQ_RX_NONE as this might
diff --git a/drivers/net/intel/fm10k/fm10k_ethdev.c b/drivers/net/intel/fm10k/fm10k_ethdev.c
index 9b123c0b2c..5aa15a8dba 100644
--- a/drivers/net/intel/fm10k/fm10k_ethdev.c
+++ b/drivers/net/intel/fm10k/fm10k_ethdev.c
@@ -416,11 +416,6 @@ fm10k_check_mq_mode(struct rte_eth_dev *dev)
 
 	vmdq_conf = &dev->data->dev_conf.rx_adv_conf.vmdq_rx_conf;
 
-	if (rx_mq_mode & RTE_ETH_MQ_RX_DCB_FLAG) {
-		PMD_INIT_LOG(ERR, "DCB mode is not supported.");
-		return -EINVAL;
-	}
-
 	if (!(rx_mq_mode & RTE_ETH_MQ_RX_VMDQ_FLAG))
 		return 0;
 
diff --git a/lib/ethdev/rte_ethdev.c b/lib/ethdev/rte_ethdev.c
index f843e8808a..39a895c9e4 100644
--- a/lib/ethdev/rte_ethdev.c
+++ b/lib/ethdev/rte_ethdev.c
@@ -1573,6 +1573,22 @@ rte_eth_dev_configure(uint16_t port_id, uint16_t nb_rx_q, uint16_t nb_tx_q,
 		goto rollback;
 	}
 
+	if (dev->dev_ops->get_dcb_info == NULL) {
+		if ((dev_conf->rxmode.mq_mode & RTE_ETH_MQ_RX_DCB_FLAG) != 0) {
+			RTE_ETHDEV_LOG_LINE(ERR, "Ethdev port_id=%u does not support DCB rx mode",
+				port_id);
+			ret = -EINVAL;
+			goto rollback;
+		}
+		if (dev_conf->txmode.mq_mode == RTE_ETH_MQ_TX_DCB ||
+				dev_conf->txmode.mq_mode == RTE_ETH_MQ_TX_VMDQ_DCB) {
+			RTE_ETHDEV_LOG_LINE(ERR, "Ethdev port_id=%u does not support DCB tx mode",
+				port_id);
+			ret = -EINVAL;
+			goto rollback;
+		}
+	}
+
 	if (dev_info.max_vmdq_pools == 0) {
 		if ((dev_conf->rxmode.mq_mode & RTE_ETH_MQ_RX_VMDQ_FLAG) != 0) {
 			RTE_ETHDEV_LOG_LINE(ERR, "Ethdev port_id=%u does not support VMDq rx mode",
-- 
2.54.0

[PATCH 6/8] drivers/net: fix reported RSS capability

[David Marchand]

Some drivers (idpf, cpfl) report RSS support even if lacking HW support.
On the other hand, some driver do have support but do not advertise it
(either in dev_info, or in the documentation).

Fixes: 70675bcc3a57 ("net/idpf: support RSS")
Fixes: cfbc66551a14 ("net/cpfl: support RSS")
Fixes: 5fb899f4b225 ("net/xsc: support RSS configuration")
Fixes: ff8db3711b29 ("net/nbl: support infos query")

Signed-off-by: David Marchand <david.marchand@redhat.com>
---
 doc/guides/nics/features/failsafe.ini     | 1 +
 doc/guides/nics/features/nbl.ini          | 1 +
 doc/guides/nics/features/netvsc.ini       | 1 +
 drivers/net/intel/cpfl/cpfl_ethdev.c      | 3 ++-
 drivers/net/intel/cpfl/cpfl_representor.c | 4 +++-
 drivers/net/intel/idpf/idpf_ethdev.c      | 3 ++-
 drivers/net/xsc/xsc_ethdev.c              | 2 ++
 7 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/doc/guides/nics/features/failsafe.ini b/doc/guides/nics/features/failsafe.ini
index 09afdc1963..b778a40be6 100644
--- a/doc/guides/nics/features/failsafe.ini
+++ b/doc/guides/nics/features/failsafe.ini
@@ -18,6 +18,7 @@ Multicast MAC filter = Y
 VLAN filter          = Y
 Flow control         = Y
 Packet type parsing  = Y
+RSS hash             = P
 Stats per queue      = Y
 ARMv7                = Y
 ARMv8                = Y
diff --git a/doc/guides/nics/features/nbl.ini b/doc/guides/nics/features/nbl.ini
index 5935092a49..e799840e40 100644
--- a/doc/guides/nics/features/nbl.ini
+++ b/doc/guides/nics/features/nbl.ini
@@ -9,6 +9,7 @@ MTU update           = Y
 Scattered Rx         = Y
 Promiscuous mode     = Y
 Unicast MAC filter   = Y
+RSS hash             = Y
 VLAN offload         = P
 Extended stats       = Y
 Stats per queue      = Y
diff --git a/doc/guides/nics/features/netvsc.ini b/doc/guides/nics/features/netvsc.ini
index fa8c2ac132..7bc7148f95 100644
--- a/doc/guides/nics/features/netvsc.ini
+++ b/doc/guides/nics/features/netvsc.ini
@@ -8,6 +8,7 @@ Speed capabilities   = P
 Free Tx mbuf on demand = Y
 Scattered Rx         = Y
 Promiscuous mode     = Y
+RSS hash             = Y
 Allmulticast mode    = Y
 Stats per queue      = Y
 Extended stats       = Y
diff --git a/drivers/net/intel/cpfl/cpfl_ethdev.c b/drivers/net/intel/cpfl/cpfl_ethdev.c
index 32e0f81d99..0863043a2e 100644
--- a/drivers/net/intel/cpfl/cpfl_ethdev.c
+++ b/drivers/net/intel/cpfl/cpfl_ethdev.c
@@ -212,7 +212,8 @@ cpfl_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
 	dev_info->hash_key_size = vport->rss_key_size;
 	dev_info->reta_size = vport->rss_lut_size;
 
-	dev_info->flow_type_rss_offloads = CPFL_RSS_OFFLOAD_ALL;
+	if (base->caps.rss_caps != 0)
+		dev_info->flow_type_rss_offloads = CPFL_RSS_OFFLOAD_ALL;
 
 	dev_info->rx_offload_capa =
 		RTE_ETH_RX_OFFLOAD_IPV4_CKSUM           |
diff --git a/drivers/net/intel/cpfl/cpfl_representor.c b/drivers/net/intel/cpfl/cpfl_representor.c
index 60b72b5ec1..bb28c0b989 100644
--- a/drivers/net/intel/cpfl/cpfl_representor.c
+++ b/drivers/net/intel/cpfl/cpfl_representor.c
@@ -195,6 +195,7 @@ cpfl_repr_dev_info_get(struct rte_eth_dev *ethdev,
 		       struct rte_eth_dev_info *dev_info)
 {
 	struct cpfl_repr *repr = CPFL_DEV_TO_REPR(ethdev);
+	struct cpfl_adapter_ext *adapter = repr->itf.adapter;
 
 	dev_info->device = ethdev->device;
 	dev_info->max_mac_addrs = 1;
@@ -203,7 +204,8 @@ cpfl_repr_dev_info_get(struct rte_eth_dev *ethdev,
 	dev_info->min_rx_bufsize = CPFL_MIN_BUF_SIZE;
 	dev_info->max_rx_pktlen = CPFL_MAX_FRAME_SIZE;
 
-	dev_info->flow_type_rss_offloads = CPFL_RSS_OFFLOAD_ALL;
+	if (adapter->base.caps.rss_caps != 0)
+		dev_info->flow_type_rss_offloads = CPFL_RSS_OFFLOAD_ALL;
 
 	dev_info->rx_offload_capa =
 		RTE_ETH_RX_OFFLOAD_VLAN_STRIP		|
diff --git a/drivers/net/intel/idpf/idpf_ethdev.c b/drivers/net/intel/idpf/idpf_ethdev.c
index e9e9781fdd..5a8c783013 100644
--- a/drivers/net/intel/idpf/idpf_ethdev.c
+++ b/drivers/net/intel/idpf/idpf_ethdev.c
@@ -169,7 +169,8 @@ idpf_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
 	dev_info->hash_key_size = vport->rss_key_size;
 	dev_info->reta_size = vport->rss_lut_size;
 
-	dev_info->flow_type_rss_offloads = IDPF_RSS_OFFLOAD_ALL;
+	if (adapter->caps.rss_caps != 0)
+		dev_info->flow_type_rss_offloads = IDPF_RSS_OFFLOAD_ALL;
 
 	dev_info->rx_offload_capa =
 		RTE_ETH_RX_OFFLOAD_IPV4_CKSUM           |
diff --git a/drivers/net/xsc/xsc_ethdev.c b/drivers/net/xsc/xsc_ethdev.c
index 5fbe68782e..8ac7fecd3a 100644
--- a/drivers/net/xsc/xsc_ethdev.c
+++ b/drivers/net/xsc/xsc_ethdev.c
@@ -469,6 +469,8 @@ xsc_ethdev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
 	info->if_index = priv->ifindex;
 	info->speed_capa = priv->xdev->link_speed_capa;
 	info->hash_key_size = XSC_RSS_HASH_KEY_LEN;
+	info->flow_type_rss_offloads = RTE_ETH_RSS_IP | RTE_ETH_RSS_UDP |
+		RTE_ETH_RSS_TCP;
 	info->tx_desc_lim.nb_seg_max = 8;
 	info->tx_desc_lim.nb_mtu_seg_max = 8;
 	info->switch_info.name = dev->data->name;
-- 
2.54.0

[PATCH 7/8] ethdev: check RSS availability

[David Marchand]

Add RSS capability check in rte_eth_dev_configure() using
dev_info.flow_type_rss_offloads.
When zero, reject Rx modes with RTE_ETH_MQ_RX_RSS_FLAG.
Remove redundant RSS checks from drivers.

Signed-off-by: David Marchand <david.marchand@redhat.com>
---
 devtools/check-doc-vs-code.sh          | 14 +++++++++++++-
 doc/guides/rel_notes/release_26_11.rst |  2 ++
 drivers/net/intel/cpfl/cpfl_ethdev.c   |  3 ---
 drivers/net/nfp/nfp_net_common.c       |  7 -------
 drivers/net/octeontx/octeontx_ethdev.c |  3 +--
 drivers/net/sfc/sfc_rx.c               |  9 +--------
 lib/ethdev/rte_ethdev.c                |  8 ++++++++
 7 files changed, 25 insertions(+), 21 deletions(-)

diff --git a/devtools/check-doc-vs-code.sh b/devtools/check-doc-vs-code.sh
index 81c9713f5a..da8398bfa4 100755
--- a/devtools/check-doc-vs-code.sh
+++ b/devtools/check-doc-vs-code.sh
@@ -89,6 +89,18 @@ check_mq_caps() # <driver>
 		fi
 	fi
 
+	if all_docs_agree $1 "RSS hash"; then
+		if has_doc_feature "$doc" "RSS hash"; then
+			git grep -qE 'flow_type_rss_offloads[[:space:]]*\|?=' -- "$code" ||
+				error "RSS documented but flow_type_rss_offloads not set for $1"
+		else
+			! git grep -qE 'flow_type_rss_offloads[[:space:]]*\|?=' -- "$code" ||
+				error "flow_type_rss_offloads set but RSS not documented for $1"
+			! git grep -qE 'RTE_ETH_MQ_RX.*RSS' -- "$code" ||
+				error "RSS mq_mode referenced but RSS not documented for $1"
+		fi
+	fi
+
 	if all_docs_agree $1 "VMDq"; then
 		if has_doc_feature "$doc" "VMDq"; then
 			git grep -qE 'max_vmdq_pools[[:space:]]*=' -- "$code" ||
@@ -131,7 +143,7 @@ if has_code_change 'RTE_FLOW_.*_TYPE_' ||
 		check_rte_flow $driver
 	done
 fi
-if has_code_change 'get_dcb_info\|max_vmdq_pools\|RTE_ETH_MQ_.*DCB\|RTE_ETH_MQ_.*VMDQ' ||
+if has_code_change 'get_dcb_info\|flow_type_rss_offloads\|max_vmdq_pools\|RTE_ETH_MQ_' ||
 		has_file_change 'doc/guides/nics/features'; then
 	for driver in $(changed_net_drivers); do
 		check_mq_caps $driver
diff --git a/doc/guides/rel_notes/release_26_11.rst b/doc/guides/rel_notes/release_26_11.rst
index 9341769c32..caffd2a611 100644
--- a/doc/guides/rel_notes/release_26_11.rst
+++ b/doc/guides/rel_notes/release_26_11.rst
@@ -428,6 +428,8 @@ API Changes
 
   * DCB modes (Rx ``RTE_ETH_MQ_RX_DCB_FLAG``, Tx ``RTE_ETH_MQ_TX_DCB``/``RTE_ETH_MQ_TX_VMDQ_DCB``)
     are rejected if the driver has no ``get_dcb_info`` callback.
+  * RSS mode (Rx ``RTE_ETH_MQ_RX_RSS_FLAG``) is rejected if the driver reports no
+    ``flow_type_rss_offloads``.
   * VMDq modes (Rx ``RTE_ETH_MQ_RX_VMDQ_FLAG``,
     Tx ``RTE_ETH_MQ_TX_VMDQ_DCB``/``RTE_ETH_MQ_TX_VMDQ_ONLY``) are rejected
     if the driver reports no VMDq pool.
diff --git a/drivers/net/intel/cpfl/cpfl_ethdev.c b/drivers/net/intel/cpfl/cpfl_ethdev.c
index 0863043a2e..f425181bf2 100644
--- a/drivers/net/intel/cpfl/cpfl_ethdev.c
+++ b/drivers/net/intel/cpfl/cpfl_ethdev.c
@@ -752,9 +752,6 @@ cpfl_dev_configure(struct rte_eth_dev *dev)
 			PMD_INIT_LOG(ERR, "Failed to init rss");
 			return ret;
 		}
-	} else if (conf->rxmode.mq_mode == RTE_ETH_MQ_RX_RSS) {
-		PMD_INIT_LOG(ERR, "RSS is not supported.");
-		return -ENOTSUP;
 	}
 
 	vport->max_pkt_len =
diff --git a/drivers/net/nfp/nfp_net_common.c b/drivers/net/nfp/nfp_net_common.c
index afa0bc0faf..f9957086d2 100644
--- a/drivers/net/nfp/nfp_net_common.c
+++ b/drivers/net/nfp/nfp_net_common.c
@@ -373,13 +373,6 @@ nfp_net_configure(struct rte_eth_dev *dev)
 		return -EINVAL;
 	}
 
-	/* Checking RX mode */
-	if ((rxmode->mq_mode & RTE_ETH_MQ_RX_RSS_FLAG) != 0 &&
-			(hw->super.cap & NFP_NET_CFG_CTRL_RSS_ANY) == 0) {
-		PMD_DRV_LOG(ERR, "RSS not supported.");
-		return -EINVAL;
-	}
-
 	/* Checking MTU set */
 	if (rxmode->mtu > hw->max_mtu + NFP_ETH_OVERHEAD) {
 		PMD_DRV_LOG(ERR, "MTU (%u) larger than the maximum possible frame size (%u).",
diff --git a/drivers/net/octeontx/octeontx_ethdev.c b/drivers/net/octeontx/octeontx_ethdev.c
index e173535d29..e0df23049c 100644
--- a/drivers/net/octeontx/octeontx_ethdev.c
+++ b/drivers/net/octeontx/octeontx_ethdev.c
@@ -499,8 +499,7 @@ octeontx_dev_configure(struct rte_eth_dev *dev)
 		return -EINVAL;
 	}
 
-	if (rxmode->mq_mode != RTE_ETH_MQ_RX_NONE &&
-		rxmode->mq_mode != RTE_ETH_MQ_RX_RSS) {
+	if (rxmode->mq_mode != RTE_ETH_MQ_RX_NONE) {
 		octeontx_log_err("unsupported rx qmode %d", rxmode->mq_mode);
 		return -EINVAL;
 	}
diff --git a/drivers/net/sfc/sfc_rx.c b/drivers/net/sfc/sfc_rx.c
index 1d4101b9e9..aa59931f06 100644
--- a/drivers/net/sfc/sfc_rx.c
+++ b/drivers/net/sfc/sfc_rx.c
@@ -1668,21 +1668,14 @@ sfc_rx_qinit_info(struct sfc_adapter *sa, sfc_sw_index_t sw_index,
 static int
 sfc_rx_check_mode(struct sfc_adapter *sa, struct rte_eth_rxmode *rxmode)
 {
-	struct sfc_adapter_shared * const sas = sfc_sa2shared(sa);
 	uint64_t offloads_supported = sfc_rx_get_dev_offload_caps(sa) |
 				      sfc_rx_get_queue_offload_caps(sa);
-	struct sfc_rss *rss = &sas->rss;
 	int rc = 0;
 
 	switch (rxmode->mq_mode) {
 	case RTE_ETH_MQ_RX_NONE:
-		/* No special checks are required */
-		break;
 	case RTE_ETH_MQ_RX_RSS:
-		if (rss->context_type == EFX_RX_SCALE_UNAVAILABLE) {
-			sfc_err(sa, "RSS is not available");
-			rc = EINVAL;
-		}
+		/* No special checks are required */
 		break;
 	default:
 		sfc_err(sa, "Rx multi-queue mode %u not supported",
diff --git a/lib/ethdev/rte_ethdev.c b/lib/ethdev/rte_ethdev.c
index 39a895c9e4..44b20697ae 100644
--- a/lib/ethdev/rte_ethdev.c
+++ b/lib/ethdev/rte_ethdev.c
@@ -1526,6 +1526,14 @@ rte_eth_dev_configure(uint16_t port_id, uint16_t nb_rx_q, uint16_t nb_tx_q,
 		goto rollback;
 	}
 
+	if (dev_info.flow_type_rss_offloads == 0 &&
+			(dev_conf->rxmode.mq_mode & RTE_ETH_MQ_RX_RSS_FLAG) != 0) {
+		RTE_ETHDEV_LOG_LINE(ERR, "Ethdev port_id=%u does not support RSS rx mode",
+			port_id);
+		ret = -EINVAL;
+		goto rollback;
+	}
+
 	dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf =
 		rte_eth_rss_hf_refine(dev_conf->rx_adv_conf.rss_conf.rss_hf);
 
-- 
2.54.0

[PATCH 8/8] ethdev: check unknown Rx/Tx multi-queue modes

[David Marchand]

Add validation in rte_eth_dev_configure() to reject invalid multi-queue
mode values early, before passing them to drivers.
If we do not enforce valid values are passed by an application,
this application might face issues in the future when we add more modes.

For Rx mq_mode, reject any bits outside the defined RSS, DCB, and VMDq
flags.
For Tx mq_mode, reject values greater than RTE_ETH_MQ_TX_VMDQ_ONLY.

Thanks to this, many drivers can stop caring about unexpected modes.

Signed-off-by: David Marchand <david.marchand@redhat.com>
---
 doc/guides/rel_notes/release_26_11.rst |  1 +
 drivers/net/bnxt/bnxt_rxq.c            | 14 ++------------
 drivers/net/cnxk/cnxk_ethdev.c         | 11 -----------
 drivers/net/cnxk/cnxk_rep_ops.c        | 16 +---------------
 drivers/net/intel/cpfl/cpfl_ethdev.c   | 13 -------------
 drivers/net/intel/e1000/igb_ethdev.c   | 15 +--------------
 drivers/net/intel/e1000/igc_ethdev.c   | 19 -------------------
 drivers/net/intel/idpf/idpf_ethdev.c   |  6 ------
 drivers/net/mvneta/mvneta_ethdev.c     |  7 -------
 drivers/net/mvpp2/mrvl_ethdev.c        |  7 -------
 drivers/net/nbl/nbl_dev/nbl_dev.c      |  6 ------
 drivers/net/nfp/nfp_net_common.c       |  8 --------
 drivers/net/octeontx/octeontx_ethdev.c | 10 ----------
 drivers/net/qede/qede_ethdev.c         |  5 -----
 drivers/net/sfc/sfc_repr.c             | 16 +---------------
 drivers/net/sfc/sfc_rx.c               | 14 +-------------
 drivers/net/sfc/sfc_tx.c               |  9 ---------
 drivers/net/thunderx/nicvf_ethdev.c    | 12 ------------
 drivers/net/virtio/virtio_ethdev.c     | 14 --------------
 drivers/net/zxdh/zxdh_ethdev.c         | 19 -------------------
 lib/ethdev/rte_ethdev.c                | 17 +++++++++++++++++
 21 files changed, 24 insertions(+), 215 deletions(-)

diff --git a/doc/guides/rel_notes/release_26_11.rst b/doc/guides/rel_notes/release_26_11.rst
index caffd2a611..4c00f51d89 100644
--- a/doc/guides/rel_notes/release_26_11.rst
+++ b/doc/guides/rel_notes/release_26_11.rst
@@ -433,6 +433,7 @@ API Changes
   * VMDq modes (Rx ``RTE_ETH_MQ_RX_VMDQ_FLAG``,
     Tx ``RTE_ETH_MQ_TX_VMDQ_DCB``/``RTE_ETH_MQ_TX_VMDQ_ONLY``) are rejected
     if the driver reports no VMDq pool.
+  * Unknown Rx and Tx modes are rejected.
 
 * ethdev: Updated VMDq related API.
 
diff --git a/drivers/net/bnxt/bnxt_rxq.c b/drivers/net/bnxt/bnxt_rxq.c
index 9743296b39..11115db1fd 100644
--- a/drivers/net/bnxt/bnxt_rxq.c
+++ b/drivers/net/bnxt/bnxt_rxq.c
@@ -85,18 +85,8 @@ int bnxt_mq_rx_configure(struct bnxt *bp)
 
 	bp->nr_vnics = 0;
 
-	/* Multi-queue mode */
-	switch (dev_conf->rxmode.mq_mode) {
-	case RTE_ETH_MQ_RX_NONE:
-	case RTE_ETH_MQ_RX_RSS:
-		pools = bp->rx_cosq_cnt ? bp->rx_cosq_cnt : pools;
-		break;
-	default:
-		PMD_DRV_LOG_LINE(ERR, "Unsupported mq_mode %d",
-				 dev_conf->rxmode.mq_mode);
-		return -EINVAL;
-	}
-
+	if (bp->rx_cosq_cnt)
+		pools = bp->rx_cosq_cnt;
 	pools = RTE_MIN(pools, bp->rx_cp_nr_rings);
 	nb_q_per_grp = bp->rx_cp_nr_rings / pools;
 	PMD_DRV_LOG_LINE(DEBUG, "pools = %u nb_q_per_grp = %u",
diff --git a/drivers/net/cnxk/cnxk_ethdev.c b/drivers/net/cnxk/cnxk_ethdev.c
index 9a4da870cd..0bd0302d6a 100644
--- a/drivers/net/cnxk/cnxk_ethdev.c
+++ b/drivers/net/cnxk/cnxk_ethdev.c
@@ -1485,17 +1485,6 @@ cnxk_nix_configure(struct rte_eth_dev *eth_dev)
 		goto fail_configure;
 	}
 
-	if (rxmode->mq_mode != RTE_ETH_MQ_RX_NONE &&
-	    rxmode->mq_mode != RTE_ETH_MQ_RX_RSS) {
-		plt_err("Unsupported mq rx mode %d", rxmode->mq_mode);
-		goto fail_configure;
-	}
-
-	if (txmode->mq_mode != RTE_ETH_MQ_TX_NONE) {
-		plt_err("Unsupported mq tx mode %d", txmode->mq_mode);
-		goto fail_configure;
-	}
-
 	/* Free the resources allocated from the previous configure */
 	if (dev->configured == 1) {
 		/* Unregister queue irq's */
diff --git a/drivers/net/cnxk/cnxk_rep_ops.c b/drivers/net/cnxk/cnxk_rep_ops.c
index 4a9c027bf5..da7ebd9c26 100644
--- a/drivers/net/cnxk/cnxk_rep_ops.c
+++ b/drivers/net/cnxk/cnxk_rep_ops.c
@@ -143,12 +143,10 @@ rep_eth_conf_chk(const struct rte_eth_conf *conf, uint16_t nb_rx_queues)
 		ret = -EINVAL;
 	}
 
-	switch (conf->rxmode.mq_mode) {
-	case RTE_ETH_MQ_RX_RSS:
+	if (conf->rxmode.mq_mode == RTE_ETH_MQ_RX_RSS) {
 		if (nb_rx_queues != 1) {
 			plt_err("Rx RSS is not supported with %u queues", nb_rx_queues);
 			ret = -EINVAL;
-			break;
 		}
 
 		rss_conf = &conf->rx_adv_conf.rss_conf;
@@ -157,18 +155,6 @@ rep_eth_conf_chk(const struct rte_eth_conf *conf, uint16_t nb_rx_queues)
 			plt_err("Rx RSS configuration is not supported");
 			ret = -EINVAL;
 		}
-		break;
-	case RTE_ETH_MQ_RX_NONE:
-		break;
-	default:
-		plt_err("Rx mode MQ modes other than RSS not supported");
-		ret = -EINVAL;
-		break;
-	}
-
-	if (conf->txmode.mq_mode != RTE_ETH_MQ_TX_NONE) {
-		plt_err("Tx mode MQ modes not supported");
-		ret = -EINVAL;
 	}
 
 	if (conf->lpbk_mode != 0) {
diff --git a/drivers/net/intel/cpfl/cpfl_ethdev.c b/drivers/net/intel/cpfl/cpfl_ethdev.c
index f425181bf2..71f0b73936 100644
--- a/drivers/net/intel/cpfl/cpfl_ethdev.c
+++ b/drivers/net/intel/cpfl/cpfl_ethdev.c
@@ -707,12 +707,6 @@ cpfl_dev_configure(struct rte_eth_dev *dev)
 		return -ENOTSUP;
 	}
 
-	if (conf->txmode.mq_mode != RTE_ETH_MQ_TX_NONE) {
-		PMD_INIT_LOG(ERR, "Multi-queue TX mode %d is not supported",
-			     conf->txmode.mq_mode);
-		return -ENOTSUP;
-	}
-
 	if (conf->lpbk_mode != 0) {
 		PMD_INIT_LOG(ERR, "Loopback operation mode %d is not supported",
 			     conf->lpbk_mode);
@@ -739,13 +733,6 @@ cpfl_dev_configure(struct rte_eth_dev *dev)
 		return -ENOTSUP;
 	}
 
-	if (conf->rxmode.mq_mode != RTE_ETH_MQ_RX_RSS &&
-	    conf->rxmode.mq_mode != RTE_ETH_MQ_RX_NONE) {
-		PMD_INIT_LOG(ERR, "RX mode %d is not supported.",
-			     conf->rxmode.mq_mode);
-		return -EINVAL;
-	}
-
 	if (base->caps.rss_caps != 0 && dev->data->nb_rx_queues != 0) {
 		ret = cpfl_init_rss(vport);
 		if (ret != 0) {
diff --git a/drivers/net/intel/e1000/igb_ethdev.c b/drivers/net/intel/e1000/igb_ethdev.c
index 181af58169..c65a468b26 100644
--- a/drivers/net/intel/e1000/igb_ethdev.c
+++ b/drivers/net/intel/e1000/igb_ethdev.c
@@ -1179,25 +1179,12 @@ igb_check_mq_mode(struct rte_eth_dev *dev)
 			return -EINVAL;
 		}
 	} else {
-		/* To no break software that set invalid mode, only display
-		 * warning if invalid mode is used.
-		 */
-		if (rx_mq_mode != RTE_ETH_MQ_RX_NONE &&
-		    rx_mq_mode != RTE_ETH_MQ_RX_VMDQ_ONLY &&
-		    rx_mq_mode != RTE_ETH_MQ_RX_RSS) {
+		if (rx_mq_mode == RTE_ETH_MQ_RX_VMDQ_RSS) {
 			/* RSS together with VMDq not supported*/
 			PMD_INIT_LOG(ERR, "RX mode %d is not supported.",
 				     rx_mq_mode);
 			return -EINVAL;
 		}
-
-		if (tx_mq_mode != RTE_ETH_MQ_TX_NONE &&
-		    tx_mq_mode != RTE_ETH_MQ_TX_VMDQ_ONLY) {
-			PMD_INIT_LOG(WARNING, "TX mode %d is not supported."
-					" Due to txmode is meaningless in this"
-					" driver, just ignore.",
-					tx_mq_mode);
-		}
 	}
 	return 0;
 }
diff --git a/drivers/net/intel/e1000/igc_ethdev.c b/drivers/net/intel/e1000/igc_ethdev.c
index 73dd5dd1a3..2c8ff57e6b 100644
--- a/drivers/net/intel/e1000/igc_ethdev.c
+++ b/drivers/net/intel/e1000/igc_ethdev.c
@@ -344,30 +344,11 @@ static const struct eth_dev_ops eth_igc_ops = {
 static int
 igc_check_mq_mode(struct rte_eth_dev *dev)
 {
-	enum rte_eth_rx_mq_mode rx_mq_mode = dev->data->dev_conf.rxmode.mq_mode;
-	enum rte_eth_tx_mq_mode tx_mq_mode = dev->data->dev_conf.txmode.mq_mode;
-
 	if (RTE_ETH_DEV_SRIOV(dev).active != 0) {
 		PMD_INIT_LOG(ERR, "SRIOV is not supported.");
 		return -EINVAL;
 	}
 
-	if (rx_mq_mode != RTE_ETH_MQ_RX_NONE &&
-		rx_mq_mode != RTE_ETH_MQ_RX_RSS) {
-		/* RSS together with VMDq not supported*/
-		PMD_INIT_LOG(ERR, "RX mode %d is not supported.",
-				rx_mq_mode);
-		return -EINVAL;
-	}
-
-	/* To no break software that set invalid mode, only display
-	 * warning if invalid mode is used.
-	 */
-	if (tx_mq_mode != RTE_ETH_MQ_TX_NONE)
-		PMD_INIT_LOG(WARNING,
-			"TX mode %d is not supported. Due to meaningless in this driver, just ignore",
-			tx_mq_mode);
-
 	return 0;
 }
 
diff --git a/drivers/net/intel/idpf/idpf_ethdev.c b/drivers/net/intel/idpf/idpf_ethdev.c
index 5a8c783013..f3115d2369 100644
--- a/drivers/net/intel/idpf/idpf_ethdev.c
+++ b/drivers/net/intel/idpf/idpf_ethdev.c
@@ -650,12 +650,6 @@ idpf_dev_configure(struct rte_eth_dev *dev)
 		return -ENOTSUP;
 	}
 
-	if (conf->txmode.mq_mode != RTE_ETH_MQ_TX_NONE) {
-		PMD_INIT_LOG(ERR, "Multi-queue TX mode %d is not supported",
-			     conf->txmode.mq_mode);
-		return -ENOTSUP;
-	}
-
 	if (conf->lpbk_mode != 0) {
 		PMD_INIT_LOG(ERR, "Loopback operation mode %d is not supported",
 			     conf->lpbk_mode);
diff --git a/drivers/net/mvneta/mvneta_ethdev.c b/drivers/net/mvneta/mvneta_ethdev.c
index eef9758224..975d3da81e 100644
--- a/drivers/net/mvneta/mvneta_ethdev.c
+++ b/drivers/net/mvneta/mvneta_ethdev.c
@@ -120,13 +120,6 @@ mvneta_dev_configure(struct rte_eth_dev *dev)
 	struct mvneta_priv *priv = dev->data->dev_private;
 	struct neta_ppio_params *ppio_params;
 
-	if (dev->data->dev_conf.rxmode.mq_mode != RTE_ETH_MQ_RX_NONE) {
-		MVNETA_LOG(INFO, "Unsupported RSS and rx multi queue mode %d",
-			dev->data->dev_conf.rxmode.mq_mode);
-		if (dev->data->nb_rx_queues > 1)
-			return -EINVAL;
-	}
-
 	if (dev->data->dev_conf.txmode.offloads & RTE_ETH_TX_OFFLOAD_MULTI_SEGS)
 		priv->multiseg = 1;
 
diff --git a/drivers/net/mvpp2/mrvl_ethdev.c b/drivers/net/mvpp2/mrvl_ethdev.c
index 2df3a77e7f..9be3e5a92d 100644
--- a/drivers/net/mvpp2/mrvl_ethdev.c
+++ b/drivers/net/mvpp2/mrvl_ethdev.c
@@ -483,13 +483,6 @@ mrvl_dev_configure(struct rte_eth_dev *dev)
 		return -EINVAL;
 	}
 
-	if (dev->data->dev_conf.rxmode.mq_mode != RTE_ETH_MQ_RX_NONE &&
-	    dev->data->dev_conf.rxmode.mq_mode != RTE_ETH_MQ_RX_RSS) {
-		MRVL_LOG(INFO, "Unsupported rx multi queue mode %d",
-			dev->data->dev_conf.rxmode.mq_mode);
-		return -EINVAL;
-	}
-
 	if (dev->data->dev_conf.rxmode.mtu > priv->max_mtu) {
 		MRVL_LOG(ERR, "MTU %u is larger than max_mtu %u",
 			 dev->data->dev_conf.rxmode.mtu,
diff --git a/drivers/net/nbl/nbl_dev/nbl_dev.c b/drivers/net/nbl/nbl_dev/nbl_dev.c
index e41732ccd3..d28eea082f 100644
--- a/drivers/net/nbl/nbl_dev/nbl_dev.c
+++ b/drivers/net/nbl/nbl_dev/nbl_dev.c
@@ -14,7 +14,6 @@ static int nbl_dev_port_configure(struct nbl_adapter *adapter)
 int nbl_dev_configure(struct rte_eth_dev *eth_dev)
 {
 	struct rte_eth_dev_data *dev_data = eth_dev->data;
-	enum rte_eth_rx_mq_mode rx_mq_mode = eth_dev->data->dev_conf.rxmode.mq_mode;
 	struct nbl_adapter *adapter = ETH_DEV_TO_NBL_DEV_PF_PRIV(eth_dev);
 	int ret;
 
@@ -23,11 +22,6 @@ int nbl_dev_configure(struct rte_eth_dev *eth_dev)
 
 	NBL_LOG(DEBUG, "Begin to configure the device, state: %d", adapter->state);
 
-	if (rx_mq_mode != RTE_ETH_MQ_RX_NONE && rx_mq_mode != RTE_ETH_MQ_RX_RSS) {
-		NBL_LOG(ERR, "Rx mq mode %d is not supported", rx_mq_mode);
-		return -ENOTSUP;
-	}
-
 	dev_data->dev_conf.intr_conf.lsc = 0;
 
 	switch (adapter->state) {
diff --git a/drivers/net/nfp/nfp_net_common.c b/drivers/net/nfp/nfp_net_common.c
index f9957086d2..97841c00b5 100644
--- a/drivers/net/nfp/nfp_net_common.c
+++ b/drivers/net/nfp/nfp_net_common.c
@@ -357,22 +357,14 @@ nfp_net_configure(struct rte_eth_dev *dev)
 	struct nfp_net_hw *hw;
 	struct rte_eth_conf *dev_conf;
 	struct rte_eth_rxmode *rxmode;
-	struct rte_eth_txmode *txmode;
 
 	hw = nfp_net_get_hw(dev);
 	dev_conf = &dev->data->dev_conf;
 	rxmode = &dev_conf->rxmode;
-	txmode = &dev_conf->txmode;
 
 	if ((rxmode->mq_mode & RTE_ETH_MQ_RX_RSS_FLAG) != 0)
 		rxmode->offloads |= RTE_ETH_RX_OFFLOAD_RSS_HASH;
 
-	/* Checking TX mode */
-	if (txmode->mq_mode != RTE_ETH_MQ_TX_NONE) {
-		PMD_DRV_LOG(ERR, "TX mq_mode DCB and VMDq not supported.");
-		return -EINVAL;
-	}
-
 	/* Checking MTU set */
 	if (rxmode->mtu > hw->max_mtu + NFP_ETH_OVERHEAD) {
 		PMD_DRV_LOG(ERR, "MTU (%u) larger than the maximum possible frame size (%u).",
diff --git a/drivers/net/octeontx/octeontx_ethdev.c b/drivers/net/octeontx/octeontx_ethdev.c
index e0df23049c..bde4c2c615 100644
--- a/drivers/net/octeontx/octeontx_ethdev.c
+++ b/drivers/net/octeontx/octeontx_ethdev.c
@@ -494,16 +494,6 @@ octeontx_dev_configure(struct rte_eth_dev *dev)
 		return -EINVAL;
 	}
 
-	if (txmode->mq_mode) {
-		octeontx_log_err("tx mq_mode DCB or VMDq not supported");
-		return -EINVAL;
-	}
-
-	if (rxmode->mq_mode != RTE_ETH_MQ_RX_NONE) {
-		octeontx_log_err("unsupported rx qmode %d", rxmode->mq_mode);
-		return -EINVAL;
-	}
-
 	if (!(txmode->offloads & RTE_ETH_TX_OFFLOAD_MT_LOCKFREE)) {
 		PMD_INIT_LOG(NOTICE, "cant disable lockfree tx");
 		txmode->offloads |= RTE_ETH_TX_OFFLOAD_MT_LOCKFREE;
diff --git a/drivers/net/qede/qede_ethdev.c b/drivers/net/qede/qede_ethdev.c
index c41177b86a..93fc75ad0a 100644
--- a/drivers/net/qede/qede_ethdev.c
+++ b/drivers/net/qede/qede_ethdev.c
@@ -1289,11 +1289,6 @@ static int qede_dev_configure(struct rte_eth_dev *eth_dev)
 		DP_NOTICE(edev, false,
 			  "Invalid devargs supplied, requested change will not take effect\n");
 
-	if (!(rxmode->mq_mode == RTE_ETH_MQ_RX_NONE ||
-	      rxmode->mq_mode == RTE_ETH_MQ_RX_RSS)) {
-		DP_ERR(edev, "Unsupported multi-queue mode\n");
-		return -ENOTSUP;
-	}
 	/* Flow director mode check */
 	if (qede_check_fdir_support(eth_dev))
 		return -ENOTSUP;
diff --git a/drivers/net/sfc/sfc_repr.c b/drivers/net/sfc/sfc_repr.c
index 2be17d3c8f..73d7d9bbc6 100644
--- a/drivers/net/sfc/sfc_repr.c
+++ b/drivers/net/sfc/sfc_repr.c
@@ -391,13 +391,11 @@ sfc_repr_check_conf(struct sfc_repr *sr, uint16_t nb_rx_queues,
 		ret = -EINVAL;
 	}
 
-	switch (conf->rxmode.mq_mode) {
-	case RTE_ETH_MQ_RX_RSS:
+	if (conf->rxmode.mq_mode == RTE_ETH_MQ_RX_RSS) {
 		if (nb_rx_queues != 1) {
 			sfcr_err(sr, "Rx RSS is not supported with %u queues",
 				 nb_rx_queues);
 			ret = -EINVAL;
-			break;
 		}
 
 		rss_conf = &conf->rx_adv_conf.rss_conf;
@@ -406,18 +404,6 @@ sfc_repr_check_conf(struct sfc_repr *sr, uint16_t nb_rx_queues,
 			sfcr_err(sr, "Rx RSS configuration is not supported");
 			ret = -EINVAL;
 		}
-		break;
-	case RTE_ETH_MQ_RX_NONE:
-		break;
-	default:
-		sfcr_err(sr, "Rx mode MQ modes other than RSS not supported");
-		ret = -EINVAL;
-		break;
-	}
-
-	if (conf->txmode.mq_mode != RTE_ETH_MQ_TX_NONE) {
-		sfcr_err(sr, "Tx mode MQ modes not supported");
-		ret = -EINVAL;
 	}
 
 	if (conf->lpbk_mode != 0) {
diff --git a/drivers/net/sfc/sfc_rx.c b/drivers/net/sfc/sfc_rx.c
index aa59931f06..789507f78e 100644
--- a/drivers/net/sfc/sfc_rx.c
+++ b/drivers/net/sfc/sfc_rx.c
@@ -1670,18 +1670,6 @@ sfc_rx_check_mode(struct sfc_adapter *sa, struct rte_eth_rxmode *rxmode)
 {
 	uint64_t offloads_supported = sfc_rx_get_dev_offload_caps(sa) |
 				      sfc_rx_get_queue_offload_caps(sa);
-	int rc = 0;
-
-	switch (rxmode->mq_mode) {
-	case RTE_ETH_MQ_RX_NONE:
-	case RTE_ETH_MQ_RX_RSS:
-		/* No special checks are required */
-		break;
-	default:
-		sfc_err(sa, "Rx multi-queue mode %u not supported",
-			rxmode->mq_mode);
-		rc = EINVAL;
-	}
 
 	/*
 	 * Requested offloads are validated against supported by ethdev,
@@ -1700,7 +1688,7 @@ sfc_rx_check_mode(struct sfc_adapter *sa, struct rte_eth_rxmode *rxmode)
 		rxmode->offloads |= RTE_ETH_RX_OFFLOAD_OUTER_IPV4_CKSUM;
 	}
 
-	return rc;
+	return 0;
 }
 
 /**
diff --git a/drivers/net/sfc/sfc_tx.c b/drivers/net/sfc/sfc_tx.c
index fac56cb27c..a860265c6a 100644
--- a/drivers/net/sfc/sfc_tx.c
+++ b/drivers/net/sfc/sfc_tx.c
@@ -314,15 +314,6 @@ sfc_tx_check_mode(struct sfc_adapter *sa, const struct rte_eth_txmode *txmode)
 	uint64_t dev_tx_offload_cap = sfc_tx_get_dev_offload_caps(sa);
 	int rc = 0;
 
-	switch (txmode->mq_mode) {
-	case RTE_ETH_MQ_TX_NONE:
-		break;
-	default:
-		sfc_err(sa, "Tx multi-queue mode %u not supported",
-			txmode->mq_mode);
-		rc = EINVAL;
-	}
-
 	if ((dev_tx_offload_cap & RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE) != 0 &&
 	    (txmode->offloads & RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE) == 0) {
 		sfc_err(sa, "There is no FAST_FREE flag in the attempted Tx mode configuration");
diff --git a/drivers/net/thunderx/nicvf_ethdev.c b/drivers/net/thunderx/nicvf_ethdev.c
index 30d03f4db9..0f7b754e8a 100644
--- a/drivers/net/thunderx/nicvf_ethdev.c
+++ b/drivers/net/thunderx/nicvf_ethdev.c
@@ -1990,7 +1990,6 @@ nicvf_dev_configure(struct rte_eth_dev *dev)
 	struct rte_eth_dev_data *data = dev->data;
 	struct rte_eth_conf *conf = &data->dev_conf;
 	struct rte_eth_rxmode *rxmode = &conf->rxmode;
-	struct rte_eth_txmode *txmode = &conf->txmode;
 	struct nicvf *nic = nicvf_pmd_priv(dev);
 	uint8_t cqcount;
 
@@ -2004,17 +2003,6 @@ nicvf_dev_configure(struct rte_eth_dev *dev)
 		return -EINVAL;
 	}
 
-	if (txmode->mq_mode) {
-		PMD_INIT_LOG(INFO, "Tx mq_mode DCB or VMDq not supported");
-		return -EINVAL;
-	}
-
-	if (rxmode->mq_mode != RTE_ETH_MQ_RX_NONE &&
-		rxmode->mq_mode != RTE_ETH_MQ_RX_RSS) {
-		PMD_INIT_LOG(INFO, "Unsupported rx qmode %d", rxmode->mq_mode);
-		return -EINVAL;
-	}
-
 	if (conf->dcb_capability_en) {
 		PMD_INIT_LOG(INFO, "DCB enable not supported");
 		return -EINVAL;
diff --git a/drivers/net/virtio/virtio_ethdev.c b/drivers/net/virtio/virtio_ethdev.c
index a6fe4f3023..e6ad2de4ba 100644
--- a/drivers/net/virtio/virtio_ethdev.c
+++ b/drivers/net/virtio/virtio_ethdev.c
@@ -2241,20 +2241,6 @@ virtio_dev_configure(struct rte_eth_dev *dev)
 	PMD_INIT_LOG(DEBUG, "configure");
 	req_features = VIRTIO_PMD_DEFAULT_GUEST_FEATURES;
 
-	if (rxmode->mq_mode != RTE_ETH_MQ_RX_NONE && rxmode->mq_mode != RTE_ETH_MQ_RX_RSS) {
-		PMD_DRV_LOG(ERR,
-			"Unsupported Rx multi queue mode %d",
-			rxmode->mq_mode);
-		return -EINVAL;
-	}
-
-	if (txmode->mq_mode != RTE_ETH_MQ_TX_NONE) {
-		PMD_DRV_LOG(ERR,
-			"Unsupported Tx multi queue mode %d",
-			txmode->mq_mode);
-		return -EINVAL;
-	}
-
 	if (dev->data->dev_conf.intr_conf.rxq) {
 		ret = virtio_init_device(dev, hw->req_guest_features);
 		if (ret < 0)
diff --git a/drivers/net/zxdh/zxdh_ethdev.c b/drivers/net/zxdh/zxdh_ethdev.c
index 7c2f894642..f3efc927b2 100644
--- a/drivers/net/zxdh/zxdh_ethdev.c
+++ b/drivers/net/zxdh/zxdh_ethdev.c
@@ -1038,25 +1038,6 @@ zxdh_dev_configure(struct rte_eth_dev *dev)
 		return -EINVAL;
 	}
 
-	if (rxmode->mq_mode != RTE_ETH_MQ_RX_RSS && rxmode->mq_mode != RTE_ETH_MQ_RX_NONE) {
-		PMD_DRV_LOG(ERR, "Unsupported Rx multi queue mode %d", rxmode->mq_mode);
-		return -EINVAL;
-	}
-
-	if (txmode->mq_mode != RTE_ETH_MQ_TX_NONE) {
-		PMD_DRV_LOG(ERR, "Unsupported Tx multi queue mode %d", txmode->mq_mode);
-		return -EINVAL;
-	}
-	if (rxmode->mq_mode != RTE_ETH_MQ_RX_RSS && rxmode->mq_mode != RTE_ETH_MQ_RX_NONE) {
-		PMD_DRV_LOG(ERR, "Unsupported Rx multi queue mode %d", rxmode->mq_mode);
-		return -EINVAL;
-	}
-
-	if (txmode->mq_mode != RTE_ETH_MQ_TX_NONE) {
-		PMD_DRV_LOG(ERR, "Unsupported Tx multi queue mode %d", txmode->mq_mode);
-		return -EINVAL;
-	}
-
 	ret = zxdh_features_update(hw, rxmode, txmode);
 	if (ret < 0)
 		return ret;
diff --git a/lib/ethdev/rte_ethdev.c b/lib/ethdev/rte_ethdev.c
index 44b20697ae..5b99562f37 100644
--- a/lib/ethdev/rte_ethdev.c
+++ b/lib/ethdev/rte_ethdev.c
@@ -1526,6 +1526,23 @@ rte_eth_dev_configure(uint16_t port_id, uint16_t nb_rx_q, uint16_t nb_tx_q,
 		goto rollback;
 	}
 
+#define RX_MQ_MODE_KNOWN_FLAGS \
+	(RTE_ETH_MQ_RX_RSS_FLAG | RTE_ETH_MQ_RX_DCB_FLAG | RTE_ETH_MQ_RX_VMDQ_FLAG)
+
+	if ((dev_conf->rxmode.mq_mode & ~RX_MQ_MODE_KNOWN_FLAGS) != 0) {
+		RTE_ETHDEV_LOG_LINE(ERR, "Ethdev port_id=%u invalid rx mq_mode 0x%x",
+			port_id, dev_conf->rxmode.mq_mode);
+		ret = -EINVAL;
+		goto rollback;
+	}
+
+	if (dev_conf->txmode.mq_mode > RTE_ETH_MQ_TX_VMDQ_ONLY) {
+		RTE_ETHDEV_LOG_LINE(ERR, "Ethdev port_id=%u invalid tx mq_mode %u",
+			port_id, dev_conf->txmode.mq_mode);
+		ret = -EINVAL;
+		goto rollback;
+	}
+
 	if (dev_info.flow_type_rss_offloads == 0 &&
 			(dev_conf->rxmode.mq_mode & RTE_ETH_MQ_RX_RSS_FLAG) != 0) {
 		RTE_ETHDEV_LOG_LINE(ERR, "Ethdev port_id=%u does not support RSS rx mode",
-- 
2.54.0

Re: [PATCH 0/8] Validate multiqueue configuration in ethdev

[Stephen Hemminger]

On Fri, 16 Oct 2026 15:05:46 +0200
David Marchand <david.marchand@redhat.com> wrote:

> We have various checks in drivers about Rx and Tx multiqueue
> configuration.
> This series is a followup of the VMDq cleanup, finishing the job with
> DCB and RSS, and then rejecting invalid multiqueue configuration (useful
> from an ABI point of view).
> 
> Some drivers misreported their capabilities.
> It is important drivers maintainers review carefully those changes.


Thanks, eventually the whole features matrix needs to be auto generated
but that requires lots more work.

First pass of semi-manual AI review found issues

Review: [PATCH 0/8] ethdev multi-queue mode validation (David Marchand)

Applied cleanly on main (v26.11-rc1). Every commit builds with
-Dwerror=true for all touched drivers except mvneta/mvpp2 (no musdk).
All Fixes: hashes resolve.

Main problems: 7/8 rejects RSS mode on ports without RSS, which breaks
in-tree examples and drivers that deliberately tolerated it; and the
devtools trigger added in 4/8 never fires on code changes.


Patch 4/8 devtools: check VMDq capability

Error: has_code_change patterns use '\|' for alternation. git -G
compiles the pattern as ERE, where '\|' is a literal pipe, so it never
matches. On this series:

  git log -G'max_vmdq_pools\|RTE_ETH_MQ_.*VMDQ' HEAD~8..  -> 0 commits
  git log -G'max_vmdq_pools|RTE_ETH_MQ_.*VMDQ'  HEAD~8..  -> 7 commits

So incremental mode only runs check_mq_caps when a features .ini
changes. Use ERE alternation here and in the patterns extended by 5/8
and 7/8:

  if has_code_change 'max_vmdq_pools|RTE_ETH_MQ_.*VMDQ' ||

Warning: drivers under drivers/net/intel/ are never checked.
all_net_drivers and changed_net_drivers only yield "intel", there is no
intel.ini, so check_mq_caps returns early for ixgbe, i40e, igb, ice,
fm10k, ipn3ke, idpf and cpfl, i.e. most VMDq/DCB users. Running the
check over the intel subdirectories reports:

  DCB documented but no get_dcb_info callback for ipn3ke
  RSS documented but flow_type_rss_offloads not set for ipn3ke
  VMDq documented but max_vmdq_pools not set for ipn3ke

e1000 also needs a dir to doc mapping (em/igb/igc share a directory).
igb.ini claims DCB = Y, but igb has no get_dcb_info and 5/8 removes
its "DCB mode is not supported" check. Fix igb.ini and ipn3ke.ini in
this series, and walk drivers/net/intel/*/ in the script.

Info: -S to -G also changes the existing rte_flow trigger.
-S'RTE_FLOW_.*_TYPE_' was a literal match and never fired before.
Mention it in the commit message.


Patch 7/8 ethdev: check RSS availability

Error: rejecting RTE_ETH_MQ_RX_RSS_FLAG when flow_type_rss_offloads is
0 breaks configurations that work today. Applications set RSS mode
statically and only mask rss_hf with flow_type_rss_offloads. In tree:
l3fwd, l3fwd-power, l3fwd-graph, ip_reassembly, distributor, ntb, dma,
eventdev_pipeline, multi_process mp_server, app/graph, test-eventdev.

l3fwd only clears mq_mode for disable_rss or max_rx_queues == 1, so it
now fails rte_eth_dev_configure() on virtio without VIRTIO_NET_F_RSS,
vhost, memif, af_xdp, af_packet, ring and pcap. mp_server uses one Rx
queue with RSS and fails on any port without RSS.

Drivers deliberately accepted this: mvneta (failed only with more than
one Rx queue), octeontx, sfc_repr and cnxk_rep (RSS with one queue and
no hash config). After this patch the RSS branches left in
sfc_repr_check_conf() and rep_eth_conf_chk() are unreachable.

Only reject what cannot work:

	if (dev_info.flow_type_rss_offloads == 0 &&
	    (dev_conf->rxmode.mq_mode & RTE_ETH_MQ_RX_RSS_FLAG) != 0 &&
	    nb_rx_q > 1) {

and fix the examples to drop RSS when the port has none, e.g. l3fwd:

	if (disable_rss == 1 || dev_info.max_rx_queues == 1 ||
	    dev_info.flow_type_rss_offloads == 0)
		local_port_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE;

Update the release note wording to match.


Patch 2/8 drivers/net: fix reported VMDq capability

Warning: Fixes: targets are in released versions but there is no
Cc: stable@dpdk.org. If it goes to stable, the fm10k hunk cannot be
taken as is: it drops the VF configure check and relies on the ethdev
VMDq validation, which stable does not have.

Info: failsafe.ini VMDq = P is not mentioned in the commit message.


Patch 6/8 drivers/net: fix reported RSS capability

Warning: Fixes: targets are in released versions but there is no
Cc: stable@dpdk.org.

Warning: xsc_np.c handles L3/L4 SRC_ONLY/DST_ONLY and LEVEL_INNERMOST,
but only IP|UDP|TCP are advertised, so ethdev rejects those bits in
configure and rss_hash_update. Advertise what the driver implements:

	info->flow_type_rss_offloads = RTE_ETH_RSS_IP |
		RTE_ETH_RSS_UDP | RTE_ETH_RSS_TCP |
		RTE_ETH_RSS_L3_SRC_ONLY | RTE_ETH_RSS_L3_DST_ONLY |
		RTE_ETH_RSS_L4_SRC_ONLY | RTE_ETH_RSS_L4_DST_ONLY |
		RTE_ETH_RSS_LEVEL_INNERMOST;

Info: idpf, cpfl and cpfl representor still report hash_key_size and
reta_size when rss_caps == 0. Move them under the same condition.


Patch 1/8 net/bnxt: remove leftover VMDq code in MAC helpers

Info: bnxt_mac_addr_add_op() still range-checks pool and indexes
bp->vnic_info[pool]. With ethdev forcing pool 0 when VMDq is not
configured, it can use vnic_info[0] like the remove path.

Re: [PATCH 0/8] Validate multiqueue configuration in ethdev

[Renyong Wan]

On 10/17/2026 12:44 AM, Stephen Hemminger wrote:
> On Fri, 16 Oct 2026 15:05:46 +0200
> David Marchand <david.marchand@redhat.com> wrote:
> 
>> We have various checks in drivers about Rx and Tx multiqueue
>> configuration.
>> This series is a followup of the VMDq cleanup, finishing the job with
>> DCB and RSS, and then rejecting invalid multiqueue configuration (useful
>> from an ABI point of view).
>>
>> Some drivers misreported their capabilities.
>> It is important drivers maintainers review carefully those changes.
> 
> 
> Thanks, eventually the whole features matrix needs to be auto generated
> but that requires lots more work.
> 
> First pass of semi-manual AI review found issues
> 
> Review: [PATCH 0/8] ethdev multi-queue mode validation (David Marchand)
> 
> Applied cleanly on main (v26.11-rc1). Every commit builds with
> -Dwerror=true for all touched drivers except mvneta/mvpp2 (no musdk).
> All Fixes: hashes resolve.
> 
> Main problems: 7/8 rejects RSS mode on ports without RSS, which breaks
> in-tree examples and drivers that deliberately tolerated it; and the
> devtools trigger added in 4/8 never fires on code changes.
> 
> 
> Patch 4/8 devtools: check VMDq capability
> 
> Error: has_code_change patterns use '\|' for alternation. git -G
> compiles the pattern as ERE, where '\|' is a literal pipe, so it never
> matches. On this series:
> 
>    git log -G'max_vmdq_pools\|RTE_ETH_MQ_.*VMDQ' HEAD~8..  -> 0 commits
>    git log -G'max_vmdq_pools|RTE_ETH_MQ_.*VMDQ'  HEAD~8..  -> 7 commits
> 
> So incremental mode only runs check_mq_caps when a features .ini
> changes. Use ERE alternation here and in the patterns extended by 5/8
> and 7/8:
> 
>    if has_code_change 'max_vmdq_pools|RTE_ETH_MQ_.*VMDQ' ||
> 
> Warning: drivers under drivers/net/intel/ are never checked.
> all_net_drivers and changed_net_drivers only yield "intel", there is no
> intel.ini, so check_mq_caps returns early for ixgbe, i40e, igb, ice,
> fm10k, ipn3ke, idpf and cpfl, i.e. most VMDq/DCB users. Running the
> check over the intel subdirectories reports:
> 
>    DCB documented but no get_dcb_info callback for ipn3ke
>    RSS documented but flow_type_rss_offloads not set for ipn3ke
>    VMDq documented but max_vmdq_pools not set for ipn3ke
> 
> e1000 also needs a dir to doc mapping (em/igb/igc share a directory).
> igb.ini claims DCB = Y, but igb has no get_dcb_info and 5/8 removes
> its "DCB mode is not supported" check. Fix igb.ini and ipn3ke.ini in
> this series, and walk drivers/net/intel/*/ in the script.
> 
> Info: -S to -G also changes the existing rte_flow trigger.
> -S'RTE_FLOW_.*_TYPE_' was a literal match and never fired before.
> Mention it in the commit message.
> 
> 
> Patch 7/8 ethdev: check RSS availability
> 
> Error: rejecting RTE_ETH_MQ_RX_RSS_FLAG when flow_type_rss_offloads is
> 0 breaks configurations that work today. Applications set RSS mode
> statically and only mask rss_hf with flow_type_rss_offloads. In tree:
> l3fwd, l3fwd-power, l3fwd-graph, ip_reassembly, distributor, ntb, dma,
> eventdev_pipeline, multi_process mp_server, app/graph, test-eventdev.
> 
> l3fwd only clears mq_mode for disable_rss or max_rx_queues == 1, so it
> now fails rte_eth_dev_configure() on virtio without VIRTIO_NET_F_RSS,
> vhost, memif, af_xdp, af_packet, ring and pcap. mp_server uses one Rx
> queue with RSS and fails on any port without RSS.
> 
> Drivers deliberately accepted this: mvneta (failed only with more than
> one Rx queue), octeontx, sfc_repr and cnxk_rep (RSS with one queue and
> no hash config). After this patch the RSS branches left in
> sfc_repr_check_conf() and rep_eth_conf_chk() are unreachable.
> 
> Only reject what cannot work:
> 
> 	if (dev_info.flow_type_rss_offloads == 0 &&
> 	    (dev_conf->rxmode.mq_mode & RTE_ETH_MQ_RX_RSS_FLAG) != 0 &&
> 	    nb_rx_q > 1) {
> 
> and fix the examples to drop RSS when the port has none, e.g. l3fwd:
> 
> 	if (disable_rss == 1 || dev_info.max_rx_queues == 1 ||
> 	    dev_info.flow_type_rss_offloads == 0)
> 		local_port_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE;
> 
> Update the release note wording to match.
> 
> 
> Patch 2/8 drivers/net: fix reported VMDq capability
> 
> Warning: Fixes: targets are in released versions but there is no
> Cc: stable@dpdk.org. If it goes to stable, the fm10k hunk cannot be
> taken as is: it drops the VF configure check and relies on the ethdev
> VMDq validation, which stable does not have.
> 
> Info: failsafe.ini VMDq = P is not mentioned in the commit message.
> 
> 
> Patch 6/8 drivers/net: fix reported RSS capability
> 
> Warning: Fixes: targets are in released versions but there is no
> Cc: stable@dpdk.org.
> 
> Warning: xsc_np.c handles L3/L4 SRC_ONLY/DST_ONLY and LEVEL_INNERMOST,
> but only IP|UDP|TCP are advertised, so ethdev rejects those bits in
> configure and rss_hash_update. Advertise what the driver implements:
> 
> 	info->flow_type_rss_offloads = RTE_ETH_RSS_IP |
> 		RTE_ETH_RSS_UDP | RTE_ETH_RSS_TCP |
> 		RTE_ETH_RSS_L3_SRC_ONLY | RTE_ETH_RSS_L3_DST_ONLY |
> 		RTE_ETH_RSS_L4_SRC_ONLY | RTE_ETH_RSS_L4_DST_ONLY |
> 		RTE_ETH_RSS_LEVEL_INNERMOST;
> 

Agreed, the advertised mask is incomplete. xsc_np.c does handle these
RSS bits, but they are not reported in flow_type_rss_offloads.
David, please fold this into the patch.

Thanks,
Wan Renyong

[PATCH v2 00/12] Validate multiqueue configuration in ethdev

[David Marchand]

We have various checks in drivers about Rx and Tx multiqueue
configuration.
This series is a followup of the VMDq cleanup, finishing the job with
DCB and RSS, and then rejecting invalid multiqueue configuration (useful
from an ABI point of view).

Some drivers misreported their capabilities.
It is important drivers maintainers review carefully those changes.


-- 
David Marchand

Changes since v1:
- fixed handling of drivers/net/intel (and fixed related rte_flow
  issues),
- fixed handling of multiple drivers in one driver sources,
- finished bnxt cleanup,
- fixed various inconsistencies in drivers code and doc,
- updated all applications and examples and relaxed check on RSS
  (now allowed with nb_rxq == 1 for drivers that have no RSS support),


David Marchand (12):
  devtools: fix matching in doc check
  doc: fix L2TPv2 and PPP matching support for ICE
  devtools: handle multiple drivers in doc check
  net/bnxt: remove leftover VMDq code in MAC helpers
  drivers/net: fix reported VMDq capability
  drivers/net: remove check on VMDq modes
  devtools: check VMDq capability
  doc: fix DCB capability for some Intel drivers
  ethdev: check DCB availability
  drivers/net: fix reported RSS capability
  ethdev: check RSS availability
  ethdev: check unknown Rx/Tx multi-queue modes

 MAINTAINERS                                   |   2 +-
 app/graph/ethdev.c                            |   7 +-
 app/test-eventdev/test_perf_common.c          |   2 +
 app/test-eventdev/test_pipeline_common.c      |   2 +
 devtools/check-doc-vs-code.sh                 | 146 +++++++++++++++++-
 .../features/{afpacket.ini => af_packet.ini}  |   2 +-
 .../features/{cxgbevf.ini => cxgbe_vf.ini}    |   2 +-
 doc/guides/nics/features/failsafe.ini         |   2 +
 doc/guides/nics/features/ice.ini              |   2 +
 doc/guides/nics/features/igb.ini              |   1 -
 doc/guides/nics/features/ipn3ke.ini           |   5 -
 doc/guides/nics/features/nbl.ini              |   1 +
 doc/guides/nics/features/netvsc.ini           |   1 +
 doc/guides/rel_notes/release_26_11.rst        |  14 +-
 drivers/net/atlantic/atl_ethdev.c             |   2 -
 drivers/net/axgbe/axgbe_ethdev.c              |  21 +--
 drivers/net/bnxt/bnxt_ethdev.c                |  90 +++--------
 drivers/net/bnxt/bnxt_rxq.c                   |  14 +-
 drivers/net/cnxk/cnxk_ethdev.c                |  11 --
 drivers/net/cnxk/cnxk_rep_ops.c               |  33 +---
 drivers/net/cxgbe/cxgbe_ethdev.c              |   1 -
 drivers/net/dpaa/dpaa_ethdev.c                |   1 -
 drivers/net/dpaa2/dpaa2_ethdev.c              |   1 -
 drivers/net/hns3/hns3_dcb.c                   |   9 --
 drivers/net/intel/cpfl/cpfl_ethdev.c          |  25 +--
 drivers/net/intel/cpfl/cpfl_representor.c     |   4 +-
 drivers/net/intel/e1000/igb_ethdev.c          |  21 +--
 drivers/net/intel/e1000/igb_rxtx.c            |  39 -----
 drivers/net/intel/e1000/igc_ethdev.c          |  19 ---
 drivers/net/intel/e1000/igc_txrx.c            |  19 +--
 drivers/net/intel/fm10k/fm10k_ethdev.c        |  14 +-
 drivers/net/intel/i40e/i40e_ethdev.c          |   5 -
 drivers/net/intel/idpf/idpf_ethdev.c          |  15 +-
 drivers/net/intel/ixgbe/ixgbe_ethdev.c        |   4 -
 drivers/net/mvneta/mvneta_ethdev.c            |   7 -
 drivers/net/mvpp2/mrvl_ethdev.c               |   7 -
 drivers/net/nbl/nbl_dev/nbl_dev.c             |   6 -
 drivers/net/nfp/nfp_net_common.c              |  15 --
 drivers/net/ngbe/ngbe_ethdev_vf.c             |   1 -
 drivers/net/octeontx/octeontx_ethdev.c        |  11 --
 drivers/net/qede/qede_ethdev.c                |   5 -
 drivers/net/sfc/sfc_repr.c                    |  41 +----
 drivers/net/sfc/sfc_rx.c                      |  29 +---
 drivers/net/sfc/sfc_tx.c                      |   9 --
 drivers/net/thunderx/nicvf_ethdev.c           |  20 +--
 drivers/net/txgbe/txgbe_ethdev_vf.c           |   1 -
 drivers/net/virtio/virtio_ethdev.c            |  14 --
 drivers/net/xsc/xsc_ethdev.c                  |   4 +
 drivers/net/zxdh/zxdh_ethdev.c                |  19 ---
 examples/distributor/main.c                   |   2 +
 examples/dma/dmafwd.c                         |   2 +
 .../pipeline_worker_generic.c                 |   2 +
 .../eventdev_pipeline/pipeline_worker_tx.c    |   2 +
 examples/ip_reassembly/main.c                 |   2 +
 examples/ipsec-secgw/ipsec-secgw.c            |   2 +
 examples/l2fwd-event/l2fwd_common.c           |   2 +
 examples/l3fwd-graph/main.c                   |   2 +
 examples/l3fwd/main.c                         |   3 +-
 .../client_server_mp/mp_server/init.c         |  10 +-
 examples/multi_process/symmetric_mp/main.c    |   2 +
 examples/ntb/ntb_fwd.c                        |   2 +
 examples/pipeline/obj.c                       |   7 +-
 examples/qos_meter/main.c                     |   4 +
 examples/server_node_efd/efd_server/init.c    |   3 +
 lib/ethdev/rte_ethdev.c                       |  46 ++++++
 65 files changed, 317 insertions(+), 502 deletions(-)
 rename doc/guides/nics/features/{afpacket.ini => af_packet.ini} (70%)
 rename doc/guides/nics/features/{cxgbevf.ini => cxgbe_vf.ini} (90%)

-- 
2.54.0

[PATCH v2 01/12] devtools: fix matching in doc check

[David Marchand]

The current user (rte_flow) of has_code_change pass what looks like
a regular expression, while -S matches exact strings.

Use -G.

Fixes: 947dff12bcf5 ("devtools: check flow API doc tables")
Cc: stable@dpdk.org

Signed-off-by: David Marchand <david.marchand@redhat.com>
---
 devtools/check-doc-vs-code.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/devtools/check-doc-vs-code.sh b/devtools/check-doc-vs-code.sh
index c58c239c87..80d77907f0 100755
--- a/devtools/check-doc-vs-code.sh
+++ b/devtools/check-doc-vs-code.sh
@@ -28,7 +28,7 @@ changed_files()
 
 has_code_change() # <pattern>
 {
-	test -n "$(git log --format='%h' -S"$1" $trusted_commit..)"
+	test -n "$(git log --format='%h' -G"$1" $trusted_commit..)"
 }
 
 has_file_change() # <pattern>
-- 
2.54.0

Re: [PATCH v2 01/12] devtools: fix matching in doc check

[Thomas Monjalon]

21/10/2026 12:30, David Marchand:
> The current user (rte_flow) of has_code_change pass what looks like
> a regular expression, while -S matches exact strings.
> 
> Use -G.
> 
> Fixes: 947dff12bcf5 ("devtools: check flow API doc tables")
> Cc: stable@dpdk.org
> 
> Signed-off-by: David Marchand <david.marchand@redhat.com>

Good catch, thank you.

Acked-by: Thomas Monjalon <thomas@monjalon.net>

[PATCH v2 02/12] doc: fix L2TPv2 and PPP matching support for ICE

[David Marchand]

Those features were missed when adding the code.

Fixes: 733640dae75e ("net/ice: support L2TPv2 flow pattern matching")
Cc: stable@dpdk.org

Signed-off-by: David Marchand <david.marchand@redhat.com>
---
 doc/guides/nics/features/ice.ini | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/doc/guides/nics/features/ice.ini b/doc/guides/nics/features/ice.ini
index 22f98c8de2..68c7f48ff0 100644
--- a/doc/guides/nics/features/ice.ini
+++ b/doc/guides/nics/features/ice.ini
@@ -67,9 +67,11 @@ icmp6                = Y
 ipv4                 = Y
 ipv6                 = Y
 ipv6_frag_ext        = Y
+l2tpv2               = Y
 l2tpv3oip            = Y
 nvgre                = Y
 pfcp                 = Y
+ppp                  = Y
 pppoed               = Y
 pppoes               = Y
 pppoe_proto_id       = Y
-- 
2.54.0

[PATCH v2 03/12] devtools: handle multiple drivers in doc check

[David Marchand]

The doc check currently does not look into the Intel drivers, nor does
it handle multiple drivers in a single code.

Add helpers to extract driver names from paths and map them to code
directories.

When a driver name matches its code directory, report differences in
both directions (code vs doc, doc vs code).

When multiple docs share one code directory, only report doc items
not in code to avoid false positives.

Also rename doc files to match their code directory names.

Signed-off-by: David Marchand <david.marchand@redhat.com>
---
 MAINTAINERS                                   |  2 +-
 devtools/check-doc-vs-code.sh                 | 67 +++++++++++++++++--
 .../features/{afpacket.ini => af_packet.ini}  |  2 +-
 .../features/{cxgbevf.ini => cxgbe_vf.ini}    |  2 +-
 4 files changed, 63 insertions(+), 10 deletions(-)
 rename doc/guides/nics/features/{afpacket.ini => af_packet.ini} (70%)
 rename doc/guides/nics/features/{cxgbevf.ini => cxgbe_vf.ini} (90%)

diff --git a/MAINTAINERS b/MAINTAINERS
index 1720cff62e..e05bea2f0c 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -679,7 +679,7 @@ F: examples/bond/
 Linux AF_PACKET
 M: Stephen Hemminger <stephen@networkplumber.org>
 F: drivers/net/af_packet/
-F: doc/guides/nics/features/afpacket.ini
+F: doc/guides/nics/features/af_packet.ini
 F: app/test/test_pmd_af_packet.c
 
 Linux AF_XDP
diff --git a/devtools/check-doc-vs-code.sh b/devtools/check-doc-vs-code.sh
index 80d77907f0..4dacb78b2e 100755
--- a/devtools/check-doc-vs-code.sh
+++ b/devtools/check-doc-vs-code.sh
@@ -36,30 +36,83 @@ has_file_change() # <pattern>
 	changed_files | grep -q "$1"
 }
 
+net_driver_from_path() # <path>
+{
+	sed -rn '
+		s,.*drivers/net/intel/([^/]*)/.*,\1,p; t
+		s,.*drivers/net/([^./]*)/.*,\1,p; t
+		s,.*doc/guides/nics/features/([^./]*).*,\1,p'
+}
+
 changed_net_drivers()
 {
-	net_paths='drivers/net/|doc/guides/nics/features/'
 	[ -n "$drivers" ] ||
 		drivers=$(changed_files |
-			sed -rn "s,^($net_paths)([^./]*).*,\2,p" |
+			net_driver_from_path |
 			sort -u)
 	echo "$drivers"
 }
 
 all_net_drivers()
 {
-	find $rootdir/drivers/net -mindepth 1 -maxdepth 1 -type d |
-	sed 's,.*/,,' |
-	sort
+	{
+		find $rootdir/drivers/net -name meson.build
+		ls $rootdir/doc/guides/nics/features/*.ini
+	} |
+	net_driver_from_path |
+	sort -u
+}
+
+driver_code_dir() # <driver>
+{
+	drv=$(echo "$1" | sed -r 's/_(dcf|vec|vf)$//')
+	case $drv in
+	enetc|enetc4)
+		echo "$rootdir/drivers/net/enetc" ;;
+	igb|igc|e1000)
+		echo "$rootdir/drivers/net/intel/e1000" ;;
+	ixgbe|i40e|ice|fm10k|ipn3ke|idpf|cpfl|iavf)
+		echo "$rootdir/drivers/net/intel/$drv" ;;
+	*)
+		echo "$rootdir/drivers/net/$drv" ;;
+	esac
+}
+
+# compare doc vs code items:
+# - if driver matches code dir: report differences in both directions
+# - otherwise: only report doc items not in code (shared code directory)
+flow_item_diff() # <driver> <code_dir> <doc_items> <code_items>
+{
+	{
+		[ -n "$3" ] && echo "$3"
+		[ -n "$4" ] && {
+			echo "$4"
+			[ "$1" != $(basename "$2") ] && echo "$4"
+		}
+	} | sort | uniq -u
 }
 
 check_rte_flow() # <driver>
 {
-	code=$rootdir/drivers/net/$1
+	code=$(driver_code_dir $1)
 	doc=$rootdir/doc/guides/nics/features/$1.ini
 	[ -d $code ] || return 0
 	[ -f $doc ] || return 0
-	report=$($selfdir/parse-flow-support.sh $code $doc)
+	code_support=$($selfdir/parse-flow-support.sh $code)
+	report=$(
+		for category in item action; do
+			section="rte_flow ${category}s]"
+			code_items=$(echo "$code_support" | sed -n "/$section/,/]/p" |
+				sed '/]/d' | sed 's, *=.*,,' | sed '/^$/d' | sort -u)
+			doc_items=$(sed -n "/$section/,/]/p" "$doc" |
+				sed '/]/d' | sed 's, *=.*,,' | sed '/^$/d' | sort -u)
+			if [ -n "$doc_items" ] || [ -n "$code_items" ]; then
+				flow_item_diff $1 $code "$doc_items" "$code_items"
+			fi |
+			grep . |
+			sed "s,^,$category ,"
+		done
+	)
 	if [ -n "$report" ]; then
 		error "rte_flow doc out of sync for $1"
 		echo "$report" | sed 's,^,\t,'
diff --git a/doc/guides/nics/features/afpacket.ini b/doc/guides/nics/features/af_packet.ini
similarity index 70%
rename from doc/guides/nics/features/afpacket.ini
rename to doc/guides/nics/features/af_packet.ini
index bc669dfb8a..b1cbc54aca 100644
--- a/doc/guides/nics/features/afpacket.ini
+++ b/doc/guides/nics/features/af_packet.ini
@@ -1,5 +1,5 @@
 ;
-; Supported features of the 'afpacket' network poll mode driver.
+; Supported features of the 'af_packet' network poll mode driver.
 ;
 ; Refer to default.ini for the full list of available PMD features.
 ;
diff --git a/doc/guides/nics/features/cxgbevf.ini b/doc/guides/nics/features/cxgbe_vf.ini
similarity index 90%
rename from doc/guides/nics/features/cxgbevf.ini
rename to doc/guides/nics/features/cxgbe_vf.ini
index a921cda6b1..b77b202272 100644
--- a/doc/guides/nics/features/cxgbevf.ini
+++ b/doc/guides/nics/features/cxgbe_vf.ini
@@ -1,5 +1,5 @@
 ;
-; Supported features of the 'cxgbevf' network poll mode driver.
+; Supported features of the 'cxgbe_vf' network poll mode driver.
 ;
 ; Refer to default.ini for the full list of available PMD features.
 ;
-- 
2.54.0

Re: [PATCH v2 03/12] devtools: handle multiple drivers in doc check

[Thomas Monjalon]

21/10/2026 12:30, David Marchand:
> -       report=$($selfdir/parse-flow-support.sh $code $doc)
> +       code_support=$($selfdir/parse-flow-support.sh $code)
> +       report=$(
> +               for category in item action; do
> +                       section="rte_flow ${category}s]"
> +                       code_items=$(echo "$code_support" | sed -n "/$section/,/]/p" |
> +                               sed '/]/d' | sed 's, *=.*,,' | sed '/^$/d' | sort -u)
> +                       doc_items=$(sed -n "/$section/,/]/p" "$doc" |
> +                               sed '/]/d' | sed 's, *=.*,,' | sed '/^$/d' | sort -u)
> +                       if [ -n "$doc_items" ] || [ -n "$code_items" ]; then
> +                               flow_item_diff $1 $code "$doc_items" "$code_items"
> +                       fi |
> +                       grep . |
> +                       sed "s,^,$category ,"
> +               done

This part deserves some comments to understand what we are parsing and why.

[PATCH v2 04/12] net/bnxt: remove leftover VMDq code in MAC helpers

[David Marchand]

The VMDq support removal left dead code in MAC address addition, removal
and filter restore functions.
Remove the VMDq flag checks and pool_mask logic that are no longer needed.

At the same time, remove unneeded reset to 0 of VMDq related field in
the dev_info structure.

Fixes: 582f971526da ("net/bnxt: remove VMDq support")

Signed-off-by: David Marchand <david.marchand@redhat.com>
---
Changes since v1:
- cleaned up bnxt_mac_addr_add_op,
- preferred bnxt_get_default_vnic() to direct access to bp->vnic_info[0],

---
 drivers/net/bnxt/bnxt_ethdev.c | 90 +++++++++-------------------------
 1 file changed, 22 insertions(+), 68 deletions(-)

diff --git a/drivers/net/bnxt/bnxt_ethdev.c b/drivers/net/bnxt/bnxt_ethdev.c
index 23edd94444..4a4e9c1ea3 100644
--- a/drivers/net/bnxt/bnxt_ethdev.c
+++ b/drivers/net/bnxt/bnxt_ethdev.c
@@ -1252,12 +1252,6 @@ static int bnxt_dev_info_get_op(struct rte_eth_dev *eth_dev,
 	 * TODO: default_rxconf, default_txconf, rx_desc_lim, and tx_desc_lim
 	 *       need further investigation.
 	 */
-	dev_info->max_vmdq_pools = 0;
-	dev_info->vmdq_queue_num = 0;
-
-	dev_info->vmdq_pool_base = 0;
-	dev_info->vmdq_queue_base = 0;
-
 	dev_info->rx_seg_capa.max_nseg = BNXT_MAX_BUFFER_SPLIT_SEGS;
 	dev_info->rx_seg_capa.multi_pools = BNXT_MULTI_POOL_BUF_SPLIT_CAP;
 	dev_info->rx_seg_capa.offset_allowed = BNXT_BUF_SPLIT_OFFSET_CAP;
@@ -1999,45 +1993,32 @@ static void bnxt_mac_addr_remove_op(struct rte_eth_dev *eth_dev,
 				    uint32_t index)
 {
 	struct bnxt *bp = eth_dev->data->dev_private;
-	uint64_t pool_mask;
 	struct bnxt_vnic_info *vnic;
 	struct bnxt_filter_info *filter, *temp_filter;
-	uint32_t i;
 
 	if (is_bnxt_in_error(bp))
 		return;
 
-	if ((eth_dev->data->dev_conf.rxmode.mq_mode & RTE_ETH_MQ_RX_VMDQ_FLAG) == 0)
-		pool_mask = 1;
-	else
-		pool_mask = eth_dev->data->mac_pool_sel[index];
+	if (bp->vnic_info == NULL)
+		return;
 
-	/*
-	 * Loop through all VNICs from the specified filter flow pools to
-	 * remove the corresponding MAC addr filter
-	 */
-	for (i = 0; i < bp->nr_vnics; i++) {
-		if (!(pool_mask & (1ULL << i)))
-			continue;
+	vnic = bnxt_get_default_vnic(bp);
 
-		vnic = &bp->vnic_info[i];
-		filter = STAILQ_FIRST(&vnic->filter);
-		while (filter) {
-			temp_filter = STAILQ_NEXT(filter, next);
-			if (filter->mac_index == index) {
-				STAILQ_REMOVE(&vnic->filter, filter,
-						bnxt_filter_info, next);
-				bnxt_hwrm_clear_l2_filter(bp, filter);
-				bnxt_free_filter(bp, filter);
-			}
-			filter = temp_filter;
+	filter = STAILQ_FIRST(&vnic->filter);
+	while (filter) {
+		temp_filter = STAILQ_NEXT(filter, next);
+		if (filter->mac_index == index) {
+			STAILQ_REMOVE(&vnic->filter, filter,
+					bnxt_filter_info, next);
+			bnxt_hwrm_clear_l2_filter(bp, filter);
+			bnxt_free_filter(bp, filter);
 		}
+		filter = temp_filter;
 	}
 }
 
 static int bnxt_add_mac_filter(struct bnxt *bp, struct bnxt_vnic_info *vnic,
-			       struct rte_ether_addr *mac_addr, uint32_t index,
-			       uint32_t pool)
+			       struct rte_ether_addr *mac_addr, uint32_t index)
 {
 	struct bnxt_filter_info *filter;
 	int rc = 0;
@@ -2045,9 +2026,7 @@ static int bnxt_add_mac_filter(struct bnxt *bp, struct bnxt_vnic_info *vnic,
 	/* Attach requested MAC address to the new l2_filter */
 	STAILQ_FOREACH(filter, &vnic->filter, next) {
 		if (filter->mac_index == index) {
-			PMD_DRV_LOG_LINE(DEBUG,
-				    "MAC addr already existed for pool %d",
-				    pool);
+			PMD_DRV_LOG_LINE(DEBUG, "MAC addr already exists");
 			return 0;
 		}
 	}
@@ -2082,10 +2061,9 @@ static int bnxt_add_mac_filter(struct bnxt *bp, struct bnxt_vnic_info *vnic,
 
 static int bnxt_mac_addr_add_op(struct rte_eth_dev *eth_dev,
 				struct rte_ether_addr *mac_addr,
-				uint32_t index, uint32_t pool)
+				uint32_t index, uint32_t pool __rte_unused)
 {
 	struct bnxt *bp = eth_dev->data->dev_private;
-	struct bnxt_vnic_info *vnic;
 	int rc = 0;
 
 	rc = is_bnxt_in_error(bp);
@@ -2097,11 +2075,6 @@ static int bnxt_mac_addr_add_op(struct rte_eth_dev *eth_dev,
 		return -ENOTSUP;
 	}
 
-	if (pool >= bp->max_vnics) {
-		PMD_DRV_LOG_LINE(ERR, "Pool %u exceeds VNIC count %u!", pool, bp->max_vnics);
-		return -EINVAL;
-	}
-
 	/* Filter settings will get applied when port is started */
 	if (!eth_dev->data->dev_started)
 		return 0;
@@ -2109,9 +2082,7 @@ static int bnxt_mac_addr_add_op(struct rte_eth_dev *eth_dev,
 	if (bp->vnic_info == NULL)
 		return 0;
 
-	vnic = &bp->vnic_info[pool];
-
-	rc = bnxt_add_mac_filter(bp, vnic, mac_addr, index, pool);
+	rc = bnxt_add_mac_filter(bp, bnxt_get_default_vnic(bp), mac_addr, index);
 
 	return rc;
 }
@@ -2953,7 +2924,7 @@ bnxt_config_vlan_hw_filter(struct bnxt *bp, uint64_t rx_offloads)
 		for (i = 0; i < RTE_ETHER_MAX_VLAN_ID; i++)
 			bnxt_del_vlan_filter(bp, i);
 
-		rc = bnxt_add_mac_filter(bp, vnic, NULL, 0, 0);
+		rc = bnxt_add_mac_filter(bp, vnic, NULL, 0);
 		if (rc)
 			return rc;
 	} else {
@@ -3030,7 +3001,7 @@ bnxt_config_vlan_hw_stripping(struct bnxt *bp, uint64_t rx_offloads)
 		if (rc)
 			return rc;
 	} else {
-		rc = bnxt_add_mac_filter(bp, vnic, NULL, 0, 0);
+		rc = bnxt_add_mac_filter(bp, vnic, NULL, 0);
 		if (rc)
 			return rc;
 	}
@@ -3181,7 +3152,7 @@ bnxt_set_default_mac_addr_op(struct rte_eth_dev *dev,
 		/* This filter will allow only untagged packets */
 		rc = bnxt_add_vlan_filter(bp, 0);
 	} else {
-		rc = bnxt_add_mac_filter(bp, vnic, addr, 0, 0);
+		rc = bnxt_add_mac_filter(bp, vnic, addr, 0);
 	}
 
 	PMD_DRV_LOG_LINE(DEBUG, "Set MAC addr");
@@ -4528,10 +4499,7 @@ static int bnxt_restore_mac_filters(struct bnxt *bp)
 	struct rte_eth_dev *dev = bp->eth_dev;
 	struct rte_eth_dev_info dev_info;
 	struct rte_ether_addr *addr;
-	uint64_t pool_mask;
-	uint32_t pool = 0;
 	uint32_t i;
-	bool vmdq;
 	int rc;
 
 	if (BNXT_VF(bp) && !BNXT_VF_IS_TRUSTED(bp))
@@ -4541,8 +4509,6 @@ static int bnxt_restore_mac_filters(struct bnxt *bp)
 	if (rc)
 		return rc;
 
-	vmdq = (dev->data->dev_conf.rxmode.mq_mode & RTE_ETH_MQ_RX_VMDQ_FLAG) != 0;
-
 	/* replay MAC address configuration */
 	for (i = 1; i < dev_info.max_mac_addrs; i++) {
 		addr = &dev->data->mac_addrs[i];
@@ -4551,21 +4517,9 @@ static int bnxt_restore_mac_filters(struct bnxt *bp)
 		if (rte_is_zero_ether_addr(addr))
 			continue;
 
-		pool = 0;
-		if (!vmdq)
-			pool_mask = 1;
-		else
-			pool_mask = dev->data->mac_pool_sel[i];
-
-		do {
-			if (pool_mask & 1ULL) {
-				rc = bnxt_mac_addr_add_op(dev, addr, i, pool);
-				if (rc)
-					return rc;
-			}
-			pool_mask >>= 1;
-			pool++;
-		} while (pool_mask);
+		rc = bnxt_mac_addr_add_op(dev, addr, i, 0);
+		if (rc)
+			return rc;
 	}
 
 	return 0;
-- 
2.54.0

[PATCH v2 05/12] drivers/net: fix reported VMDq capability

[David Marchand]

Some PF drivers (dpaa, dpaa2) and VF drivers (ixgbe, ngbe, txgbe)
are announcing some VMDq capability though this support is not documented,
and no action is taken if the feature is requested.

fm10k announces capability for VF device, but rejects it at configure
time.

failsafe may support VMDq, as it only passes the requests to the ports
attached to it, hence mark it as partial support.

Fixes: fe3a45fd4104 ("ixgbe: add VMDq support")
Fixes: 7e72cbfa320b ("fm10k: add reta query/update")
Fixes: 799db4568c76 ("net/dpaa: support device info and speed capability")
Fixes: 762b275f20f8 ("net/dpaa2: add missing device info fields")
Fixes: c01c748e4ae6 ("net/ipn3ke: add new driver")
Fixes: 5dec0169554b ("net/txgbe: support VF get information")
Fixes: 66070ca419c1 ("net/ngbe: add hardware configuration for VF device")

Signed-off-by: David Marchand <david.marchand@redhat.com>
---
Changes since v1:
- moved net/atlantic and net/cxgbe changes where needed (later in this
  series),
- added comment on failsafe in commitlog,
- fixed ipn3ke,

---
 doc/guides/nics/features/failsafe.ini  | 1 +
 doc/guides/nics/features/ipn3ke.ini    | 1 -
 drivers/net/dpaa/dpaa_ethdev.c         | 1 -
 drivers/net/dpaa2/dpaa2_ethdev.c       | 1 -
 drivers/net/intel/fm10k/fm10k_ethdev.c | 9 ++-------
 drivers/net/intel/ixgbe/ixgbe_ethdev.c | 4 ----
 drivers/net/ngbe/ngbe_ethdev_vf.c      | 1 -
 drivers/net/txgbe/txgbe_ethdev_vf.c    | 1 -
 8 files changed, 3 insertions(+), 16 deletions(-)

diff --git a/doc/guides/nics/features/failsafe.ini b/doc/guides/nics/features/failsafe.ini
index c7c696fbbd..09afdc1963 100644
--- a/doc/guides/nics/features/failsafe.ini
+++ b/doc/guides/nics/features/failsafe.ini
@@ -13,6 +13,7 @@ MTU update           = Y
 Promiscuous mode     = Y
 Allmulticast mode    = Y
 Unicast MAC filter   = Y
+VMDq                 = P
 Multicast MAC filter = Y
 VLAN filter          = Y
 Flow control         = Y
diff --git a/doc/guides/nics/features/ipn3ke.ini b/doc/guides/nics/features/ipn3ke.ini
index 29f40a5b11..ba43b9d91c 100644
--- a/doc/guides/nics/features/ipn3ke.ini
+++ b/doc/guides/nics/features/ipn3ke.ini
@@ -18,7 +18,6 @@ Multicast MAC filter = Y
 RSS hash             = Y
 RSS key update       = Y
 RSS reta update      = Y
-VMDq                 = Y
 SR-IOV               = Y
 DCB                  = Y
 VLAN filter          = Y
diff --git a/drivers/net/dpaa/dpaa_ethdev.c b/drivers/net/dpaa/dpaa_ethdev.c
index 1aaf97f175..7d45386a9d 100644
--- a/drivers/net/dpaa/dpaa_ethdev.c
+++ b/drivers/net/dpaa/dpaa_ethdev.c
@@ -662,7 +662,6 @@ static int dpaa_eth_dev_info(struct rte_eth_dev *dev,
 	dev_info->max_mac_addrs = DPAA_MAX_MAC_FILTER;
 	dev_info->max_hash_mac_addrs = 0;
 	dev_info->max_vfs = 0;
-	dev_info->max_vmdq_pools = RTE_ETH_16_POOLS;
 	dev_info->flow_type_rss_offloads = DPAA_RSS_OFFLOAD_ALL;
 
 	if (fif->mac_type == fman_mac_1g) {
diff --git a/drivers/net/dpaa2/dpaa2_ethdev.c b/drivers/net/dpaa2/dpaa2_ethdev.c
index 8ae4fd89c5..07e89d5c39 100644
--- a/drivers/net/dpaa2/dpaa2_ethdev.c
+++ b/drivers/net/dpaa2/dpaa2_ethdev.c
@@ -452,7 +452,6 @@ dpaa2_dev_info_get(struct rte_eth_dev *dev,
 
 	dev_info->max_hash_mac_addrs = 0;
 	dev_info->max_vfs = 0;
-	dev_info->max_vmdq_pools = RTE_ETH_16_POOLS;
 	dev_info->flow_type_rss_offloads = DPAA2_RSS_OFFLOAD_ALL;
 	/* DPAA2 has no software-visible indirection table: incoming packets are
 	 * dispatched to FQs via 'queue_id = hash % dist_size'. We expose the
diff --git a/drivers/net/intel/fm10k/fm10k_ethdev.c b/drivers/net/intel/fm10k/fm10k_ethdev.c
index 3b2daba79e..9b123c0b2c 100644
--- a/drivers/net/intel/fm10k/fm10k_ethdev.c
+++ b/drivers/net/intel/fm10k/fm10k_ethdev.c
@@ -411,7 +411,6 @@ static int
 fm10k_check_mq_mode(struct rte_eth_dev *dev)
 {
 	enum rte_eth_rx_mq_mode rx_mq_mode = dev->data->dev_conf.rxmode.mq_mode;
-	struct fm10k_hw *hw = FM10K_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 	struct rte_eth_vmdq_rx_conf *vmdq_conf;
 	uint16_t nb_rx_q = dev->data->nb_rx_queues;
 
@@ -425,11 +424,6 @@ fm10k_check_mq_mode(struct rte_eth_dev *dev)
 	if (!(rx_mq_mode & RTE_ETH_MQ_RX_VMDQ_FLAG))
 		return 0;
 
-	if (hw->mac.type == fm10k_mac_vf) {
-		PMD_INIT_LOG(ERR, "VMDQ mode is not supported in VF.");
-		return -EINVAL;
-	}
-
 	/* Check VMDQ queue pool number */
 	if (vmdq_conf->nb_queue_pools >
 			sizeof(vmdq_conf->pool_map[0].pools) * CHAR_BIT ||
@@ -1386,7 +1380,8 @@ fm10k_dev_infos_get(struct rte_eth_dev *dev,
 	dev_info->max_vfs            = pdev->max_vfs;
 	dev_info->vmdq_pool_base     = 0;
 	dev_info->vmdq_queue_base    = 0;
-	dev_info->max_vmdq_pools     = RTE_ETH_32_POOLS;
+	if (hw->mac.type != fm10k_mac_vf)
+		dev_info->max_vmdq_pools = RTE_ETH_32_POOLS;
 	dev_info->vmdq_queue_num     = FM10K_MAX_QUEUES_PF;
 	dev_info->rx_queue_offload_capa = fm10k_get_rx_queue_offloads_capa(dev);
 	dev_info->rx_offload_capa = fm10k_get_rx_port_offloads_capa(dev) |
diff --git a/drivers/net/intel/ixgbe/ixgbe_ethdev.c b/drivers/net/intel/ixgbe/ixgbe_ethdev.c
index 44eb932058..50e44484b1 100644
--- a/drivers/net/intel/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/intel/ixgbe/ixgbe_ethdev.c
@@ -4076,10 +4076,6 @@ ixgbevf_dev_info_get(struct rte_eth_dev *dev,
 	dev_info->max_mac_addrs = hw->mac.num_rar_entries;
 	dev_info->max_hash_mac_addrs = IXGBE_VMDQ_NUM_UC_MAC;
 	dev_info->max_vfs = pci_dev->max_vfs;
-	if (hw->mac.type == ixgbe_mac_82598EB)
-		dev_info->max_vmdq_pools = RTE_ETH_16_POOLS;
-	else
-		dev_info->max_vmdq_pools = RTE_ETH_64_POOLS;
 	dev_info->rx_queue_offload_capa = ixgbe_get_rx_queue_offloads(dev);
 	dev_info->rx_offload_capa = (ixgbe_get_rx_port_offloads(dev) |
 				     dev_info->rx_queue_offload_capa);
diff --git a/drivers/net/ngbe/ngbe_ethdev_vf.c b/drivers/net/ngbe/ngbe_ethdev_vf.c
index c440e02369..55cbffaf2c 100644
--- a/drivers/net/ngbe/ngbe_ethdev_vf.c
+++ b/drivers/net/ngbe/ngbe_ethdev_vf.c
@@ -475,7 +475,6 @@ ngbevf_dev_info_get(struct rte_eth_dev *dev,
 	dev_info->max_mac_addrs = hw->mac.num_rar_entries;
 	dev_info->max_hash_mac_addrs = NGBE_VMDQ_NUM_UC_MAC;
 	dev_info->max_vfs = pci_dev->max_vfs;
-	dev_info->max_vmdq_pools = RTE_ETH_64_POOLS;
 	dev_info->rx_queue_offload_capa = ngbe_get_rx_queue_offloads(dev);
 	dev_info->rx_offload_capa = (ngbe_get_rx_port_offloads(dev) |
 				     dev_info->rx_queue_offload_capa);
diff --git a/drivers/net/txgbe/txgbe_ethdev_vf.c b/drivers/net/txgbe/txgbe_ethdev_vf.c
index 341f62bc75..3cf33a8bd6 100644
--- a/drivers/net/txgbe/txgbe_ethdev_vf.c
+++ b/drivers/net/txgbe/txgbe_ethdev_vf.c
@@ -575,7 +575,6 @@ txgbevf_dev_info_get(struct rte_eth_dev *dev,
 	dev_info->max_mac_addrs = hw->mac.num_rar_entries;
 	dev_info->max_hash_mac_addrs = TXGBE_VMDQ_NUM_UC_MAC;
 	dev_info->max_vfs = pci_dev->max_vfs;
-	dev_info->max_vmdq_pools = RTE_ETH_64_POOLS;
 	dev_info->dev_capa &= ~RTE_ETH_DEV_CAPA_FLOW_RULE_KEEP;
 	dev_info->rx_queue_offload_capa = txgbe_get_rx_queue_offloads(dev);
 	dev_info->rx_offload_capa = (txgbe_get_rx_port_offloads(dev) |
-- 
2.54.0

Re: [PATCH v2 05/12] drivers/net: fix reported VMDq capability

[Bruce Richardson]

On Wed, Oct 21, 2026 at 12:30:19PM +0200, David Marchand wrote:
> Some PF drivers (dpaa, dpaa2) and VF drivers (ixgbe, ngbe, txgbe)
> are announcing some VMDq capability though this support is not documented,
> and no action is taken if the feature is requested.
> 
> fm10k announces capability for VF device, but rejects it at configure
> time.
> 
> failsafe may support VMDq, as it only passes the requests to the ports
> attached to it, hence mark it as partial support.
> 
> Fixes: fe3a45fd4104 ("ixgbe: add VMDq support")
> Fixes: 7e72cbfa320b ("fm10k: add reta query/update")
> Fixes: 799db4568c76 ("net/dpaa: support device info and speed capability")
> Fixes: 762b275f20f8 ("net/dpaa2: add missing device info fields")
> Fixes: c01c748e4ae6 ("net/ipn3ke: add new driver")
> Fixes: 5dec0169554b ("net/txgbe: support VF get information")
> Fixes: 66070ca419c1 ("net/ngbe: add hardware configuration for VF device")
> 
> Signed-off-by: David Marchand <david.marchand@redhat.com>
> ---
> Changes since v1:
> - moved net/atlantic and net/cxgbe changes where needed (later in this
>   series),
> - added comment on failsafe in commitlog,
> - fixed ipn3ke,
> 
> ---

For the intel driver changes:
Acked-by: Bruce Richardson <bruce.richardson@intel.com>


>  doc/guides/nics/features/failsafe.ini  | 1 +
>  doc/guides/nics/features/ipn3ke.ini    | 1 -
>  drivers/net/dpaa/dpaa_ethdev.c         | 1 -
>  drivers/net/dpaa2/dpaa2_ethdev.c       | 1 -
>  drivers/net/intel/fm10k/fm10k_ethdev.c | 9 ++-------
>  drivers/net/intel/ixgbe/ixgbe_ethdev.c | 4 ----
>  drivers/net/ngbe/ngbe_ethdev_vf.c      | 1 -
>  drivers/net/txgbe/txgbe_ethdev_vf.c    | 1 -
>  8 files changed, 3 insertions(+), 16 deletions(-)
> 
> diff --git a/doc/guides/nics/features/failsafe.ini b/doc/guides/nics/features/failsafe.ini
> index c7c696fbbd..09afdc1963 100644
> --- a/doc/guides/nics/features/failsafe.ini
> +++ b/doc/guides/nics/features/failsafe.ini
> @@ -13,6 +13,7 @@ MTU update           = Y
>  Promiscuous mode     = Y
>  Allmulticast mode    = Y
>  Unicast MAC filter   = Y
> +VMDq                 = P
>  Multicast MAC filter = Y
>  VLAN filter          = Y
>  Flow control         = Y
> diff --git a/doc/guides/nics/features/ipn3ke.ini b/doc/guides/nics/features/ipn3ke.ini
> index 29f40a5b11..ba43b9d91c 100644
> --- a/doc/guides/nics/features/ipn3ke.ini
> +++ b/doc/guides/nics/features/ipn3ke.ini
> @@ -18,7 +18,6 @@ Multicast MAC filter = Y
>  RSS hash             = Y
>  RSS key update       = Y
>  RSS reta update      = Y
> -VMDq                 = Y
>  SR-IOV               = Y
>  DCB                  = Y
>  VLAN filter          = Y
> diff --git a/drivers/net/dpaa/dpaa_ethdev.c b/drivers/net/dpaa/dpaa_ethdev.c
> index 1aaf97f175..7d45386a9d 100644
> --- a/drivers/net/dpaa/dpaa_ethdev.c
> +++ b/drivers/net/dpaa/dpaa_ethdev.c
> @@ -662,7 +662,6 @@ static int dpaa_eth_dev_info(struct rte_eth_dev *dev,
>  	dev_info->max_mac_addrs = DPAA_MAX_MAC_FILTER;
>  	dev_info->max_hash_mac_addrs = 0;
>  	dev_info->max_vfs = 0;
> -	dev_info->max_vmdq_pools = RTE_ETH_16_POOLS;
>  	dev_info->flow_type_rss_offloads = DPAA_RSS_OFFLOAD_ALL;
>  
>  	if (fif->mac_type == fman_mac_1g) {
> diff --git a/drivers/net/dpaa2/dpaa2_ethdev.c b/drivers/net/dpaa2/dpaa2_ethdev.c
> index 8ae4fd89c5..07e89d5c39 100644
> --- a/drivers/net/dpaa2/dpaa2_ethdev.c
> +++ b/drivers/net/dpaa2/dpaa2_ethdev.c
> @@ -452,7 +452,6 @@ dpaa2_dev_info_get(struct rte_eth_dev *dev,
>  
>  	dev_info->max_hash_mac_addrs = 0;
>  	dev_info->max_vfs = 0;
> -	dev_info->max_vmdq_pools = RTE_ETH_16_POOLS;
>  	dev_info->flow_type_rss_offloads = DPAA2_RSS_OFFLOAD_ALL;
>  	/* DPAA2 has no software-visible indirection table: incoming packets are
>  	 * dispatched to FQs via 'queue_id = hash % dist_size'. We expose the
> diff --git a/drivers/net/intel/fm10k/fm10k_ethdev.c b/drivers/net/intel/fm10k/fm10k_ethdev.c
> index 3b2daba79e..9b123c0b2c 100644
> --- a/drivers/net/intel/fm10k/fm10k_ethdev.c
> +++ b/drivers/net/intel/fm10k/fm10k_ethdev.c
> @@ -411,7 +411,6 @@ static int
>  fm10k_check_mq_mode(struct rte_eth_dev *dev)
>  {
>  	enum rte_eth_rx_mq_mode rx_mq_mode = dev->data->dev_conf.rxmode.mq_mode;
> -	struct fm10k_hw *hw = FM10K_DEV_PRIVATE_TO_HW(dev->data->dev_private);
>  	struct rte_eth_vmdq_rx_conf *vmdq_conf;
>  	uint16_t nb_rx_q = dev->data->nb_rx_queues;
>  
> @@ -425,11 +424,6 @@ fm10k_check_mq_mode(struct rte_eth_dev *dev)
>  	if (!(rx_mq_mode & RTE_ETH_MQ_RX_VMDQ_FLAG))
>  		return 0;
>  
> -	if (hw->mac.type == fm10k_mac_vf) {
> -		PMD_INIT_LOG(ERR, "VMDQ mode is not supported in VF.");
> -		return -EINVAL;
> -	}
> -
>  	/* Check VMDQ queue pool number */
>  	if (vmdq_conf->nb_queue_pools >
>  			sizeof(vmdq_conf->pool_map[0].pools) * CHAR_BIT ||
> @@ -1386,7 +1380,8 @@ fm10k_dev_infos_get(struct rte_eth_dev *dev,
>  	dev_info->max_vfs            = pdev->max_vfs;
>  	dev_info->vmdq_pool_base     = 0;
>  	dev_info->vmdq_queue_base    = 0;
> -	dev_info->max_vmdq_pools     = RTE_ETH_32_POOLS;
> +	if (hw->mac.type != fm10k_mac_vf)
> +		dev_info->max_vmdq_pools = RTE_ETH_32_POOLS;
>  	dev_info->vmdq_queue_num     = FM10K_MAX_QUEUES_PF;
>  	dev_info->rx_queue_offload_capa = fm10k_get_rx_queue_offloads_capa(dev);
>  	dev_info->rx_offload_capa = fm10k_get_rx_port_offloads_capa(dev) |
> diff --git a/drivers/net/intel/ixgbe/ixgbe_ethdev.c b/drivers/net/intel/ixgbe/ixgbe_ethdev.c
> index 44eb932058..50e44484b1 100644
> --- a/drivers/net/intel/ixgbe/ixgbe_ethdev.c
> +++ b/drivers/net/intel/ixgbe/ixgbe_ethdev.c
> @@ -4076,10 +4076,6 @@ ixgbevf_dev_info_get(struct rte_eth_dev *dev,
>  	dev_info->max_mac_addrs = hw->mac.num_rar_entries;
>  	dev_info->max_hash_mac_addrs = IXGBE_VMDQ_NUM_UC_MAC;
>  	dev_info->max_vfs = pci_dev->max_vfs;
> -	if (hw->mac.type == ixgbe_mac_82598EB)
> -		dev_info->max_vmdq_pools = RTE_ETH_16_POOLS;
> -	else
> -		dev_info->max_vmdq_pools = RTE_ETH_64_POOLS;
>  	dev_info->rx_queue_offload_capa = ixgbe_get_rx_queue_offloads(dev);
>  	dev_info->rx_offload_capa = (ixgbe_get_rx_port_offloads(dev) |
>  				     dev_info->rx_queue_offload_capa);
> diff --git a/drivers/net/ngbe/ngbe_ethdev_vf.c b/drivers/net/ngbe/ngbe_ethdev_vf.c
> index c440e02369..55cbffaf2c 100644
> --- a/drivers/net/ngbe/ngbe_ethdev_vf.c
> +++ b/drivers/net/ngbe/ngbe_ethdev_vf.c
> @@ -475,7 +475,6 @@ ngbevf_dev_info_get(struct rte_eth_dev *dev,
>  	dev_info->max_mac_addrs = hw->mac.num_rar_entries;
>  	dev_info->max_hash_mac_addrs = NGBE_VMDQ_NUM_UC_MAC;
>  	dev_info->max_vfs = pci_dev->max_vfs;
> -	dev_info->max_vmdq_pools = RTE_ETH_64_POOLS;
>  	dev_info->rx_queue_offload_capa = ngbe_get_rx_queue_offloads(dev);
>  	dev_info->rx_offload_capa = (ngbe_get_rx_port_offloads(dev) |
>  				     dev_info->rx_queue_offload_capa);
> diff --git a/drivers/net/txgbe/txgbe_ethdev_vf.c b/drivers/net/txgbe/txgbe_ethdev_vf.c
> index 341f62bc75..3cf33a8bd6 100644
> --- a/drivers/net/txgbe/txgbe_ethdev_vf.c
> +++ b/drivers/net/txgbe/txgbe_ethdev_vf.c
> @@ -575,7 +575,6 @@ txgbevf_dev_info_get(struct rte_eth_dev *dev,
>  	dev_info->max_mac_addrs = hw->mac.num_rar_entries;
>  	dev_info->max_hash_mac_addrs = TXGBE_VMDQ_NUM_UC_MAC;
>  	dev_info->max_vfs = pci_dev->max_vfs;
> -	dev_info->max_vmdq_pools = RTE_ETH_64_POOLS;
>  	dev_info->dev_capa &= ~RTE_ETH_DEV_CAPA_FLOW_RULE_KEEP;
>  	dev_info->rx_queue_offload_capa = txgbe_get_rx_queue_offloads(dev);
>  	dev_info->rx_offload_capa = (txgbe_get_rx_port_offloads(dev) |
> -- 
> 2.54.0
> 

[PATCH v2 06/12] drivers/net: remove check on VMDq modes

[David Marchand]

ethdev now validates requests for VMDq Rx and Tx modes.
No need to validate again in the driver.

Note:
- for igb, max_vmdq_pools is already 0 for models that do not support
  VMDq, so checking the VMDq modes is unneeded,
- for i40e, the FW flag was already checked to populate max_vmdq_pools,

Signed-off-by: David Marchand <david.marchand@redhat.com>
---
 drivers/net/hns3/hns3_dcb.c          |  9 -------
 drivers/net/intel/e1000/igb_rxtx.c   | 39 ----------------------------
 drivers/net/intel/i40e/i40e_ethdev.c |  5 ----
 3 files changed, 53 deletions(-)

diff --git a/drivers/net/hns3/hns3_dcb.c b/drivers/net/hns3/hns3_dcb.c
index 6d2945d9c5..e7912aebb2 100644
--- a/drivers/net/hns3/hns3_dcb.c
+++ b/drivers/net/hns3/hns3_dcb.c
@@ -1840,7 +1840,6 @@ int
 hns3_check_dev_mq_mode(struct rte_eth_dev *dev)
 {
 	enum rte_eth_rx_mq_mode rx_mq_mode = dev->data->dev_conf.rxmode.mq_mode;
-	enum rte_eth_tx_mq_mode tx_mq_mode = dev->data->dev_conf.txmode.mq_mode;
 	struct hns3_hw *hw = HNS3_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 	struct hns3_adapter *hns = HNS3_DEV_HW_TO_ADAPTER(hw);
 	struct rte_eth_dcb_rx_conf *dcb_rx_conf;
@@ -1849,14 +1848,6 @@ hns3_check_dev_mq_mode(struct rte_eth_dev *dev)
 	int max_tc = 0;
 	int i;
 
-	if (((uint32_t)rx_mq_mode & RTE_ETH_MQ_RX_VMDQ_FLAG) ||
-	    (tx_mq_mode == RTE_ETH_MQ_TX_VMDQ_DCB ||
-	     tx_mq_mode == RTE_ETH_MQ_TX_VMDQ_ONLY)) {
-		hns3_err(hw, "VMDQ is not supported, rx_mq_mode = %d, tx_mq_mode = %d.",
-			 rx_mq_mode, tx_mq_mode);
-		return -EOPNOTSUPP;
-	}
-
 	dcb_rx_conf = &dev->data->dev_conf.rx_adv_conf.dcb_rx_conf;
 	dcb_tx_conf = &dev->data->dev_conf.tx_adv_conf.dcb_tx_conf;
 	if ((uint32_t)rx_mq_mode & RTE_ETH_MQ_RX_DCB_FLAG) {
diff --git a/drivers/net/intel/e1000/igb_rxtx.c b/drivers/net/intel/e1000/igb_rxtx.c
index 4fda5d57a0..ef531f1cd4 100644
--- a/drivers/net/intel/e1000/igb_rxtx.c
+++ b/drivers/net/intel/e1000/igb_rxtx.c
@@ -2113,41 +2113,6 @@ igb_rss_configure(struct rte_eth_dev *dev)
 	igb_hw_rss_hash_set(hw, &rss_conf);
 }
 
-/*
- * Check if the mac type support VMDq or not.
- * Return 1 if it supports, otherwise, return 0.
- */
-static int
-igb_is_vmdq_supported(const struct rte_eth_dev *dev)
-{
-	const struct e1000_hw *hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
-
-	switch (hw->mac.type) {
-	case e1000_82576:
-	case e1000_82580:
-	case e1000_i350:
-		return 1;
-	case e1000_82540:
-	case e1000_82541:
-	case e1000_82542:
-	case e1000_82543:
-	case e1000_82544:
-	case e1000_82545:
-	case e1000_82546:
-	case e1000_82547:
-	case e1000_82571:
-	case e1000_82572:
-	case e1000_82573:
-	case e1000_82574:
-	case e1000_82583:
-	case e1000_i210:
-	case e1000_i211:
-	default:
-		PMD_INIT_LOG(ERR, "Cannot support VMDq feature");
-		return 0;
-	}
-}
-
 static int
 igb_vmdq_rx_hw_configure(struct rte_eth_dev *dev)
 {
@@ -2161,10 +2126,6 @@ igb_vmdq_rx_hw_configure(struct rte_eth_dev *dev)
 	hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 	cfg = &dev->data->dev_conf.rx_adv_conf.vmdq_rx_conf;
 
-	/* Check if mac type can support VMDq, return value of 0 means NOT support */
-	if (igb_is_vmdq_supported(dev) == 0)
-		return -1;
-
 	igb_rss_disable(dev);
 
 	/* RCTL: enable VLAN filter */
diff --git a/drivers/net/intel/i40e/i40e_ethdev.c b/drivers/net/intel/i40e/i40e_ethdev.c
index 41d5586403..2405d9e119 100644
--- a/drivers/net/intel/i40e/i40e_ethdev.c
+++ b/drivers/net/intel/i40e/i40e_ethdev.c
@@ -6655,11 +6655,6 @@ i40e_vmdq_setup(struct rte_eth_dev *dev)
 	 */
 	i40e_pf_disable_irq0(hw);
 
-	if ((pf->flags & I40E_FLAG_VMDQ) == 0) {
-		PMD_INIT_LOG(ERR, "FW doesn't support VMDQ");
-		return -ENOTSUP;
-	}
-
 	conf_vsis = conf->rx_adv_conf.vmdq_rx_conf.nb_queue_pools;
 	if (conf_vsis > pf->max_nb_vmdq_vsi) {
 		PMD_INIT_LOG(ERR, "VMDQ config: %u, max support:%u",
-- 
2.54.0

Re: [PATCH v2 06/12] drivers/net: remove check on VMDq modes

[Bruce Richardson]

On Wed, Oct 21, 2026 at 12:30:20PM +0200, David Marchand wrote:
> ethdev now validates requests for VMDq Rx and Tx modes.
> No need to validate again in the driver.
> 
> Note:
> - for igb, max_vmdq_pools is already 0 for models that do not support
>   VMDq, so checking the VMDq modes is unneeded,
> - for i40e, the FW flag was already checked to populate max_vmdq_pools,
> 
> Signed-off-by: David Marchand <david.marchand@redhat.com>
> ---
>  drivers/net/hns3/hns3_dcb.c          |  9 -------
>  drivers/net/intel/e1000/igb_rxtx.c   | 39 ----------------------------
>  drivers/net/intel/i40e/i40e_ethdev.c |  5 ----
>  3 files changed, 53 deletions(-)
> 

For intel driver changes:
Acked-by: Bruce Richardson <bruce.richardson@intel.com>

[PATCH v2 07/12] devtools: check VMDq capability

[David Marchand]

Let's check that the code and the documentation are aligned for VMDq
capability.

Some driver directory hosts multiple drivers that have multiple
corresponding entry in doc/guides/features/. For this case, only try to
detect a discrepancy if all docs agree.

Note: net/atlantic and net/cxgbe were forcibly setting some fields in
dev_info to 0, which is unneeded since ethdev already clears the structure.

Signed-off-by: David Marchand <david.marchand@redhat.com>
---
Changes since v1:
- added helper for checking mq capabilities,
- added handling of multi drivers,
- moved net/atlantic and net/cxgbe cleanups here,

---
 devtools/check-doc-vs-code.sh     | 73 +++++++++++++++++++++++++++++++
 drivers/net/atlantic/atl_ethdev.c |  2 -
 drivers/net/cxgbe/cxgbe_ethdev.c  |  1 -
 3 files changed, 73 insertions(+), 3 deletions(-)

diff --git a/devtools/check-doc-vs-code.sh b/devtools/check-doc-vs-code.sh
index 4dacb78b2e..eeb235ae61 100755
--- a/devtools/check-doc-vs-code.sh
+++ b/devtools/check-doc-vs-code.sh
@@ -78,6 +78,28 @@ driver_code_dir() # <driver>
 	esac
 }
 
+doc_code_map=","
+for d in $rootdir/doc/guides/nics/features/*.ini; do
+	drv=$(basename "$d" .ini)
+	code=$(driver_code_dir $drv)
+	case $doc_code_map in
+	*,$code:*)
+		before=${doc_code_map%,$code:*}
+		after=${doc_code_map#*,$code:}
+		drivers=${after%%,*}
+		rest=${after#*,}
+		doc_code_map="$before,$code:$drivers $drv,$rest" ;;
+	*)
+		doc_code_map="$doc_code_map$code: $drv," ;;
+	esac
+done
+
+docs_for_code() # <code_dir>
+{
+	tmp=${doc_code_map#*,$1:}
+	echo ${tmp%%,*}
+}
+
 # compare doc vs code items:
 # - if driver matches code dir: report differences in both directions
 # - otherwise: only report doc items not in code (shared code directory)
@@ -119,10 +141,55 @@ check_rte_flow() # <driver>
 	fi
 }
 
+has_doc_feature() # <ini_file> <feature>
+{
+	grep -q "^$2[[:space:]]*=[[:space:]]*[YP]" "$1"
+}
+
+all_docs_agree() # <driver> <feature>
+{
+	code=$(driver_code_dir $1)
+	first=""
+	for drv in $(docs_for_code $code); do
+		d=$rootdir/doc/guides/nics/features/$drv.ini
+		has_doc_feature "$d" "$2" && val=true || val=false
+		[ -n "$first" ] || first=$val
+		[ "$first" = "$val" ] || return 1
+	done
+	return 0
+}
+
+check_mq_cap() # <driver> <feature> <indicator> <code_pattern> <mq_pattern>
+{
+	if all_docs_agree "$1" "$2"; then
+		if has_doc_feature "$doc" "$2"; then
+			git grep -qE "$4" -- "$code" ||
+				error "$2 documented but $3 not set for $1"
+		else
+			! git grep -qE "$4" -- "$code" ||
+				error "$3 set but $2 not documented for $1"
+			! git grep -qE "$5" -- "$code" ||
+				error "$2 mq_mode referenced but $2 not documented for $1"
+		fi
+	fi
+}
+
+check_mq_caps() # <driver>
+{
+	code=$(driver_code_dir $1)
+	doc=$rootdir/doc/guides/nics/features/$1.ini
+	[ -d $code ] || return 0
+	[ -f $doc ] || return 0
+
+	check_mq_cap $1 "VMDq" "max_vmdq_pools" 'max_vmdq_pools[[:space:]]*=' \
+		'RTE_ETH_MQ_(RX|TX).*VMDQ'
+}
+
 if [ -z "$trusted_commit" ]; then
 	# check all
 	for driver in $(all_net_drivers); do
 		check_rte_flow $driver
+		check_mq_caps $driver
 	done
 	exit $result
 fi
@@ -134,4 +201,10 @@ if has_code_change 'RTE_FLOW_.*_TYPE_' ||
 		check_rte_flow $driver
 	done
 fi
+if has_code_change 'max_vmdq_pools|RTE_ETH_MQ_.*VMDQ' ||
+		has_file_change 'doc/guides/nics/features'; then
+	for driver in $(changed_net_drivers); do
+		check_mq_caps $driver
+	done
+fi
 exit $result
diff --git a/drivers/net/atlantic/atl_ethdev.c b/drivers/net/atlantic/atl_ethdev.c
index 24184bdb18..44a65d7557 100644
--- a/drivers/net/atlantic/atl_ethdev.c
+++ b/drivers/net/atlantic/atl_ethdev.c
@@ -1106,8 +1106,6 @@ atl_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
 	dev_info->max_vfs = pci_dev->max_vfs;
 
 	dev_info->max_hash_mac_addrs = 0;
-	dev_info->max_vmdq_pools = 0;
-	dev_info->vmdq_queue_num = 0;
 
 	dev_info->rx_offload_capa = ATL_RX_OFFLOADS;
 
diff --git a/drivers/net/cxgbe/cxgbe_ethdev.c b/drivers/net/cxgbe/cxgbe_ethdev.c
index 82e67eeff1..93554f354c 100644
--- a/drivers/net/cxgbe/cxgbe_ethdev.c
+++ b/drivers/net/cxgbe/cxgbe_ethdev.c
@@ -129,7 +129,6 @@ int cxgbe_dev_info_get(struct rte_eth_dev *eth_dev,
 	device_info->max_mac_addrs = 1;
 	/* XXX: For now we support one MAC/port */
 	device_info->max_vfs = adapter->params.arch.vfcount;
-	device_info->max_vmdq_pools = 0; /* XXX: For now no support for VMDQ */
 
 	device_info->dev_capa &= ~RTE_ETH_DEV_CAPA_FLOW_RULE_KEEP;
 
-- 
2.54.0

Re: [PATCH v2 07/12] devtools: check VMDq capability

[Thomas Monjalon]

21/10/2026 12:30, David Marchand:
> --- a/devtools/check-doc-vs-code.sh
> +++ b/devtools/check-doc-vs-code.sh
> @@ -78,6 +78,28 @@ driver_code_dir() # <driver>
>  	esac
>  }
>  
> +doc_code_map=","

What is this comma?

> +for d in $rootdir/doc/guides/nics/features/*.ini; do
> +	drv=$(basename "$d" .ini)
> +	code=$(driver_code_dir $drv)
> +	case $doc_code_map in
> +	*,$code:*)
> +		before=${doc_code_map%,$code:*}
> +		after=${doc_code_map#*,$code:}
> +		drivers=${after%%,*}
> +		rest=${after#*,}
> +		doc_code_map="$before,$code:$drivers $drv,$rest" ;;
> +	*)
> +		doc_code_map="$doc_code_map$code: $drv," ;;
> +	esac
> +done

Please add a comment for this block to explain the goal.

> +
> +docs_for_code() # <code_dir>

Even the name of this function is not self-explanatory.

> +{
> +	tmp=${doc_code_map#*,$1:}
> +	echo ${tmp%%,*}
> +}

[...]
> +all_docs_agree() # <driver> <feature>

all docs agree on what?
a doc is supposed to refer to a single code path

> +{
> +	code=$(driver_code_dir $1)
> +	first=""
> +	for drv in $(docs_for_code $code); do
> +		d=$rootdir/doc/guides/nics/features/$drv.ini
> +		has_doc_feature "$d" "$2" && val=true || val=false
> +		[ -n "$first" ] || first=$val
> +		[ "$first" = "$val" ] || return 1
> +	done
> +	return 0
> +}
> +

[PATCH v2 08/12] doc: fix DCB capability for some Intel drivers

[David Marchand]

Those drivers never supported DCB.

Fixes: 83a4a15404ef ("doc: fill nics features matrix for e1000/igb and ixgbe")
Fixes: c01c748e4ae6 ("net/ipn3ke: add new driver")

Signed-off-by: David Marchand <david.marchand@redhat.com>
---
 doc/guides/nics/features/igb.ini    | 1 -
 doc/guides/nics/features/ipn3ke.ini | 1 -
 2 files changed, 2 deletions(-)

diff --git a/doc/guides/nics/features/igb.ini b/doc/guides/nics/features/igb.ini
index 4ee500e114..451cf30948 100644
--- a/doc/guides/nics/features/igb.ini
+++ b/doc/guides/nics/features/igb.ini
@@ -20,7 +20,6 @@ RSS key update       = Y
 RSS reta update      = Y
 VMDq                 = Y
 SR-IOV               = Y
-DCB                  = Y
 VLAN filter          = Y
 Flow control         = Y
 CRC offload          = Y
diff --git a/doc/guides/nics/features/ipn3ke.ini b/doc/guides/nics/features/ipn3ke.ini
index ba43b9d91c..6abaf9e4f9 100644
--- a/doc/guides/nics/features/ipn3ke.ini
+++ b/doc/guides/nics/features/ipn3ke.ini
@@ -19,7 +19,6 @@ RSS hash             = Y
 RSS key update       = Y
 RSS reta update      = Y
 SR-IOV               = Y
-DCB                  = Y
 VLAN filter          = Y
 Flow control         = Y
 Traffic manager      = Y
-- 
2.54.0

Re: [PATCH v2 08/12] doc: fix DCB capability for some Intel drivers

[Bruce Richardson]

On Wed, Oct 21, 2026 at 12:30:22PM +0200, David Marchand wrote:
> Those drivers never supported DCB.
> 
> Fixes: 83a4a15404ef ("doc: fill nics features matrix for e1000/igb and ixgbe")
> Fixes: c01c748e4ae6 ("net/ipn3ke: add new driver")
> 
> Signed-off-by: David Marchand <david.marchand@redhat.com>
> ---
Acked-by: Bruce Richardson <bruce.richardson@intel.com>

[PATCH v2 09/12] ethdev: check DCB availability

[David Marchand]

Add DCB capability check in rte_eth_dev_configure() using
dev->dev_ops->get_dcb_info.

When NULL, reject Rx modes with RTE_ETH_MQ_RX_DCB_FLAG and
Tx modes RTE_ETH_MQ_TX_DCB and RTE_ETH_MQ_TX_VMDQ_DCB.
Remove redundant DCB checks from drivers.

Check that documentation is aligned with driver code.

Signed-off-by: David Marchand <david.marchand@redhat.com>
---
 devtools/check-doc-vs-code.sh          |  4 +++-
 doc/guides/rel_notes/release_26_11.rst | 11 ++++++++---
 drivers/net/intel/e1000/igb_ethdev.c   |  6 ------
 drivers/net/intel/fm10k/fm10k_ethdev.c |  5 -----
 lib/ethdev/rte_ethdev.c                | 16 ++++++++++++++++
 5 files changed, 27 insertions(+), 15 deletions(-)

diff --git a/devtools/check-doc-vs-code.sh b/devtools/check-doc-vs-code.sh
index eeb235ae61..d4e045ca2c 100755
--- a/devtools/check-doc-vs-code.sh
+++ b/devtools/check-doc-vs-code.sh
@@ -181,6 +181,8 @@ check_mq_caps() # <driver>
 	[ -d $code ] || return 0
 	[ -f $doc ] || return 0
 
+	check_mq_cap $1 "DCB" "get_dcb_info" '\.get_dcb_info[[:space:]]*=' \
+		'RTE_ETH_MQ_(RX|TX).*DCB'
 	check_mq_cap $1 "VMDq" "max_vmdq_pools" 'max_vmdq_pools[[:space:]]*=' \
 		'RTE_ETH_MQ_(RX|TX).*VMDQ'
 }
@@ -201,7 +203,7 @@ if has_code_change 'RTE_FLOW_.*_TYPE_' ||
 		check_rte_flow $driver
 	done
 fi
-if has_code_change 'max_vmdq_pools|RTE_ETH_MQ_.*VMDQ' ||
+if has_code_change 'get_dcb_info|max_vmdq_pools|RTE_ETH_MQ_.*DCB|RTE_ETH_MQ_.*VMDQ' ||
 		has_file_change 'doc/guides/nics/features'; then
 	for driver in $(changed_net_drivers); do
 		check_mq_caps $driver
diff --git a/doc/guides/rel_notes/release_26_11.rst b/doc/guides/rel_notes/release_26_11.rst
index be758a0c02..9341769c32 100644
--- a/doc/guides/rel_notes/release_26_11.rst
+++ b/doc/guides/rel_notes/release_26_11.rst
@@ -424,11 +424,16 @@ API Changes
   * Removed the ``unused`` field.
   * Changed the ``objs`` array from fixed size to variable size.
 
+* ethdev: Updated multi-queue mode validation at port configuration time:
+
+  * DCB modes (Rx ``RTE_ETH_MQ_RX_DCB_FLAG``, Tx ``RTE_ETH_MQ_TX_DCB``/``RTE_ETH_MQ_TX_VMDQ_DCB``)
+    are rejected if the driver has no ``get_dcb_info`` callback.
+  * VMDq modes (Rx ``RTE_ETH_MQ_RX_VMDQ_FLAG``,
+    Tx ``RTE_ETH_MQ_TX_VMDQ_DCB``/``RTE_ETH_MQ_TX_VMDQ_ONLY``) are rejected
+    if the driver reports no VMDq pool.
+
 * ethdev: Updated VMDq related API.
 
-  * At port configuration time, the number of VMDq pools advertised by a driver
-    is now used to validate VMDq related Rx and Tx modes
-    (``RTE_ETH_MQ_RX_VMDQ_FLAG``, ``RTE_ETH_MQ_TX_VMDQ_DCB``, ``RTE_ETH_MQ_TX_VMDQ_ONLY``).
   * A check was added in ``rte_eth_dev_mac_addr_add`` to validate that
     the ``pool`` parameter is 0 when VMDq is not configured.
   * The ``RTE_ETH_NUM_RECEIVE_MAC_ADDR`` and ``RTE_ETH_VMDQ_NUM_UC_HASH_ARRAY`` macros
diff --git a/drivers/net/intel/e1000/igb_ethdev.c b/drivers/net/intel/e1000/igb_ethdev.c
index 524c030be6..181af58169 100644
--- a/drivers/net/intel/e1000/igb_ethdev.c
+++ b/drivers/net/intel/e1000/igb_ethdev.c
@@ -1144,12 +1144,6 @@ igb_check_mq_mode(struct rte_eth_dev *dev)
 	uint16_t nb_rx_q = dev->data->nb_rx_queues;
 	uint16_t nb_tx_q = dev->data->nb_tx_queues;
 
-	if ((rx_mq_mode & RTE_ETH_MQ_RX_DCB_FLAG) ||
-	    tx_mq_mode == RTE_ETH_MQ_TX_DCB ||
-	    tx_mq_mode == RTE_ETH_MQ_TX_VMDQ_DCB) {
-		PMD_INIT_LOG(ERR, "DCB mode is not supported.");
-		return -EINVAL;
-	}
 	if (RTE_ETH_DEV_SRIOV(dev).active != 0) {
 		/* Check multi-queue mode.
 		 * To no break software we accept RTE_ETH_MQ_RX_NONE as this might
diff --git a/drivers/net/intel/fm10k/fm10k_ethdev.c b/drivers/net/intel/fm10k/fm10k_ethdev.c
index 9b123c0b2c..5aa15a8dba 100644
--- a/drivers/net/intel/fm10k/fm10k_ethdev.c
+++ b/drivers/net/intel/fm10k/fm10k_ethdev.c
@@ -416,11 +416,6 @@ fm10k_check_mq_mode(struct rte_eth_dev *dev)
 
 	vmdq_conf = &dev->data->dev_conf.rx_adv_conf.vmdq_rx_conf;
 
-	if (rx_mq_mode & RTE_ETH_MQ_RX_DCB_FLAG) {
-		PMD_INIT_LOG(ERR, "DCB mode is not supported.");
-		return -EINVAL;
-	}
-
 	if (!(rx_mq_mode & RTE_ETH_MQ_RX_VMDQ_FLAG))
 		return 0;
 
diff --git a/lib/ethdev/rte_ethdev.c b/lib/ethdev/rte_ethdev.c
index f843e8808a..39a895c9e4 100644
--- a/lib/ethdev/rte_ethdev.c
+++ b/lib/ethdev/rte_ethdev.c
@@ -1573,6 +1573,22 @@ rte_eth_dev_configure(uint16_t port_id, uint16_t nb_rx_q, uint16_t nb_tx_q,
 		goto rollback;
 	}
 
+	if (dev->dev_ops->get_dcb_info == NULL) {
+		if ((dev_conf->rxmode.mq_mode & RTE_ETH_MQ_RX_DCB_FLAG) != 0) {
+			RTE_ETHDEV_LOG_LINE(ERR, "Ethdev port_id=%u does not support DCB rx mode",
+				port_id);
+			ret = -EINVAL;
+			goto rollback;
+		}
+		if (dev_conf->txmode.mq_mode == RTE_ETH_MQ_TX_DCB ||
+				dev_conf->txmode.mq_mode == RTE_ETH_MQ_TX_VMDQ_DCB) {
+			RTE_ETHDEV_LOG_LINE(ERR, "Ethdev port_id=%u does not support DCB tx mode",
+				port_id);
+			ret = -EINVAL;
+			goto rollback;
+		}
+	}
+
 	if (dev_info.max_vmdq_pools == 0) {
 		if ((dev_conf->rxmode.mq_mode & RTE_ETH_MQ_RX_VMDQ_FLAG) != 0) {
 			RTE_ETHDEV_LOG_LINE(ERR, "Ethdev port_id=%u does not support VMDq rx mode",
-- 
2.54.0

Re: [PATCH v2 09/12] ethdev: check DCB availability

[Bruce Richardson]

On Wed, Oct 21, 2026 at 12:30:23PM +0200, David Marchand wrote:
> Add DCB capability check in rte_eth_dev_configure() using
> dev->dev_ops->get_dcb_info.
> 
> When NULL, reject Rx modes with RTE_ETH_MQ_RX_DCB_FLAG and
> Tx modes RTE_ETH_MQ_TX_DCB and RTE_ETH_MQ_TX_VMDQ_DCB.
> Remove redundant DCB checks from drivers.
> 
> Check that documentation is aligned with driver code.
> 
> Signed-off-by: David Marchand <david.marchand@redhat.com>
> ---
Acked-by: Bruce Richardson <bruce.richardson@intel.com>

[PATCH v2 10/12] drivers/net: fix reported RSS capability

[David Marchand]

Some drivers (idpf, cpfl) report RSS support even if lacking HW support.
On the other hand, some driver do have support but do not advertise it
(either in dev_info, or in the documentation).

failsafe may support RSS, as it only passes the requests to the ports
attached to it, hence mark it as partial support.

Fixes: c01c748e4ae6 ("net/ipn3ke: add new driver")
Fixes: 70675bcc3a57 ("net/idpf: support RSS")
Fixes: cfbc66551a14 ("net/cpfl: support RSS")
Fixes: 5fb899f4b225 ("net/xsc: support RSS configuration")
Fixes: 9f75cad1287f ("net/xsc: add PCT interfaces")
Fixes: ff8db3711b29 ("net/nbl: support infos query")

Signed-off-by: David Marchand <david.marchand@redhat.com>
---
Changes since v1:
- fixed ip3nke,
- moved all RSS capabilities under check for idpf and cpfl,
- adjusted xsc RSS capabilities,

---
 doc/guides/nics/features/failsafe.ini     | 1 +
 doc/guides/nics/features/ipn3ke.ini       | 3 ---
 doc/guides/nics/features/nbl.ini          | 1 +
 doc/guides/nics/features/netvsc.ini       | 1 +
 drivers/net/intel/cpfl/cpfl_ethdev.c      | 9 +++++----
 drivers/net/intel/cpfl/cpfl_representor.c | 4 +++-
 drivers/net/intel/idpf/idpf_ethdev.c      | 9 +++++----
 drivers/net/xsc/xsc_ethdev.c              | 4 ++++
 8 files changed, 20 insertions(+), 12 deletions(-)

diff --git a/doc/guides/nics/features/failsafe.ini b/doc/guides/nics/features/failsafe.ini
index 09afdc1963..b778a40be6 100644
--- a/doc/guides/nics/features/failsafe.ini
+++ b/doc/guides/nics/features/failsafe.ini
@@ -18,6 +18,7 @@ Multicast MAC filter = Y
 VLAN filter          = Y
 Flow control         = Y
 Packet type parsing  = Y
+RSS hash             = P
 Stats per queue      = Y
 ARMv7                = Y
 ARMv8                = Y
diff --git a/doc/guides/nics/features/ipn3ke.ini b/doc/guides/nics/features/ipn3ke.ini
index 6abaf9e4f9..1f9a28f198 100644
--- a/doc/guides/nics/features/ipn3ke.ini
+++ b/doc/guides/nics/features/ipn3ke.ini
@@ -15,9 +15,6 @@ Promiscuous mode     = Y
 Allmulticast mode    = Y
 Unicast MAC filter   = Y
 Multicast MAC filter = Y
-RSS hash             = Y
-RSS key update       = Y
-RSS reta update      = Y
 SR-IOV               = Y
 VLAN filter          = Y
 Flow control         = Y
diff --git a/doc/guides/nics/features/nbl.ini b/doc/guides/nics/features/nbl.ini
index 5935092a49..e799840e40 100644
--- a/doc/guides/nics/features/nbl.ini
+++ b/doc/guides/nics/features/nbl.ini
@@ -9,6 +9,7 @@ MTU update           = Y
 Scattered Rx         = Y
 Promiscuous mode     = Y
 Unicast MAC filter   = Y
+RSS hash             = Y
 VLAN offload         = P
 Extended stats       = Y
 Stats per queue      = Y
diff --git a/doc/guides/nics/features/netvsc.ini b/doc/guides/nics/features/netvsc.ini
index fa8c2ac132..7bc7148f95 100644
--- a/doc/guides/nics/features/netvsc.ini
+++ b/doc/guides/nics/features/netvsc.ini
@@ -8,6 +8,7 @@ Speed capabilities   = P
 Free Tx mbuf on demand = Y
 Scattered Rx         = Y
 Promiscuous mode     = Y
+RSS hash             = Y
 Allmulticast mode    = Y
 Stats per queue      = Y
 Extended stats       = Y
diff --git a/drivers/net/intel/cpfl/cpfl_ethdev.c b/drivers/net/intel/cpfl/cpfl_ethdev.c
index 32e0f81d99..c235373daf 100644
--- a/drivers/net/intel/cpfl/cpfl_ethdev.c
+++ b/drivers/net/intel/cpfl/cpfl_ethdev.c
@@ -209,10 +209,11 @@ cpfl_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
 	dev_info->max_mtu = vport->max_mtu;
 	dev_info->min_mtu = RTE_ETHER_MIN_MTU;
 
-	dev_info->hash_key_size = vport->rss_key_size;
-	dev_info->reta_size = vport->rss_lut_size;
-
-	dev_info->flow_type_rss_offloads = CPFL_RSS_OFFLOAD_ALL;
+	if (base->caps.rss_caps != 0) {
+		dev_info->hash_key_size = vport->rss_key_size;
+		dev_info->reta_size = vport->rss_lut_size;
+		dev_info->flow_type_rss_offloads = CPFL_RSS_OFFLOAD_ALL;
+	}
 
 	dev_info->rx_offload_capa =
 		RTE_ETH_RX_OFFLOAD_IPV4_CKSUM           |
diff --git a/drivers/net/intel/cpfl/cpfl_representor.c b/drivers/net/intel/cpfl/cpfl_representor.c
index 60b72b5ec1..bb28c0b989 100644
--- a/drivers/net/intel/cpfl/cpfl_representor.c
+++ b/drivers/net/intel/cpfl/cpfl_representor.c
@@ -195,6 +195,7 @@ cpfl_repr_dev_info_get(struct rte_eth_dev *ethdev,
 		       struct rte_eth_dev_info *dev_info)
 {
 	struct cpfl_repr *repr = CPFL_DEV_TO_REPR(ethdev);
+	struct cpfl_adapter_ext *adapter = repr->itf.adapter;
 
 	dev_info->device = ethdev->device;
 	dev_info->max_mac_addrs = 1;
@@ -203,7 +204,8 @@ cpfl_repr_dev_info_get(struct rte_eth_dev *ethdev,
 	dev_info->min_rx_bufsize = CPFL_MIN_BUF_SIZE;
 	dev_info->max_rx_pktlen = CPFL_MAX_FRAME_SIZE;
 
-	dev_info->flow_type_rss_offloads = CPFL_RSS_OFFLOAD_ALL;
+	if (adapter->base.caps.rss_caps != 0)
+		dev_info->flow_type_rss_offloads = CPFL_RSS_OFFLOAD_ALL;
 
 	dev_info->rx_offload_capa =
 		RTE_ETH_RX_OFFLOAD_VLAN_STRIP		|
diff --git a/drivers/net/intel/idpf/idpf_ethdev.c b/drivers/net/intel/idpf/idpf_ethdev.c
index e9e9781fdd..fbd50d0a91 100644
--- a/drivers/net/intel/idpf/idpf_ethdev.c
+++ b/drivers/net/intel/idpf/idpf_ethdev.c
@@ -166,10 +166,11 @@ idpf_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
 	dev_info->max_mtu = vport->max_mtu;
 	dev_info->min_mtu = RTE_ETHER_MIN_MTU;
 
-	dev_info->hash_key_size = vport->rss_key_size;
-	dev_info->reta_size = vport->rss_lut_size;
-
-	dev_info->flow_type_rss_offloads = IDPF_RSS_OFFLOAD_ALL;
+	if (adapter->caps.rss_caps != 0) {
+		dev_info->hash_key_size = vport->rss_key_size;
+		dev_info->reta_size = vport->rss_lut_size;
+		dev_info->flow_type_rss_offloads = IDPF_RSS_OFFLOAD_ALL;
+	}
 
 	dev_info->rx_offload_capa =
 		RTE_ETH_RX_OFFLOAD_IPV4_CKSUM           |
diff --git a/drivers/net/xsc/xsc_ethdev.c b/drivers/net/xsc/xsc_ethdev.c
index 5fbe68782e..20d6f58f68 100644
--- a/drivers/net/xsc/xsc_ethdev.c
+++ b/drivers/net/xsc/xsc_ethdev.c
@@ -469,6 +469,10 @@ xsc_ethdev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
 	info->if_index = priv->ifindex;
 	info->speed_capa = priv->xdev->link_speed_capa;
 	info->hash_key_size = XSC_RSS_HASH_KEY_LEN;
+	info->flow_type_rss_offloads = RTE_ETH_RSS_IP | RTE_ETH_RSS_UDP |
+		RTE_ETH_RSS_TCP | RTE_ETH_RSS_L3_SRC_ONLY |
+		RTE_ETH_RSS_L3_DST_ONLY | RTE_ETH_RSS_L4_SRC_ONLY |
+		RTE_ETH_RSS_L4_DST_ONLY | RTE_ETH_RSS_LEVEL_INNERMOST;
 	info->tx_desc_lim.nb_seg_max = 8;
 	info->tx_desc_lim.nb_mtu_seg_max = 8;
 	info->switch_info.name = dev->data->name;
-- 
2.54.0

Re: [PATCH v2 10/12] drivers/net: fix reported RSS capability

[Renyong Wan]

On 10/21/2026 6:30 PM, David Marchand wrote:
> Some drivers (idpf, cpfl) report RSS support even if lacking HW support.
> On the other hand, some driver do have support but do not advertise it
> (either in dev_info, or in the documentation).
> 
> failsafe may support RSS, as it only passes the requests to the ports
> attached to it, hence mark it as partial support.
> 
> Fixes: c01c748e4ae6 ("net/ipn3ke: add new driver")
> Fixes: 70675bcc3a57 ("net/idpf: support RSS")
> Fixes: cfbc66551a14 ("net/cpfl: support RSS")
> Fixes: 5fb899f4b225 ("net/xsc: support RSS configuration")
> Fixes: 9f75cad1287f ("net/xsc: add PCT interfaces")
> Fixes: ff8db3711b29 ("net/nbl: support infos query")
> 
> Signed-off-by: David Marchand <david.marchand@redhat.com>
> ---
> Changes since v1:
> - fixed ip3nke,
> - moved all RSS capabilities under check for idpf and cpfl,
> - adjusted xsc RSS capabilities,
> 
> ---
>   doc/guides/nics/features/failsafe.ini     | 1 +
>   doc/guides/nics/features/ipn3ke.ini       | 3 ---
>   doc/guides/nics/features/nbl.ini          | 1 +
>   doc/guides/nics/features/netvsc.ini       | 1 +
>   drivers/net/intel/cpfl/cpfl_ethdev.c      | 9 +++++----
>   drivers/net/intel/cpfl/cpfl_representor.c | 4 +++-
>   drivers/net/intel/idpf/idpf_ethdev.c      | 9 +++++----
>   drivers/net/xsc/xsc_ethdev.c              | 4 ++++
>   8 files changed, 20 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/net/xsc/xsc_ethdev.c b/drivers/net/xsc/xsc_ethdev.c
> index 5fbe68782e..20d6f58f68 100644
> --- a/drivers/net/xsc/xsc_ethdev.c
> +++ b/drivers/net/xsc/xsc_ethdev.c
> @@ -469,6 +469,10 @@ xsc_ethdev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
>   	info->if_index = priv->ifindex;
>   	info->speed_capa = priv->xdev->link_speed_capa;
>   	info->hash_key_size = XSC_RSS_HASH_KEY_LEN;
> +	info->flow_type_rss_offloads = RTE_ETH_RSS_IP | RTE_ETH_RSS_UDP |
> +		RTE_ETH_RSS_TCP | RTE_ETH_RSS_L3_SRC_ONLY |
> +		RTE_ETH_RSS_L3_DST_ONLY | RTE_ETH_RSS_L4_SRC_ONLY |
> +		RTE_ETH_RSS_L4_DST_ONLY | RTE_ETH_RSS_LEVEL_INNERMOST;
>   	info->tx_desc_lim.nb_seg_max = 8;
>   	info->tx_desc_lim.nb_mtu_seg_max = 8;
>   	info->switch_info.name = dev->data->name;

Looks good for net/xsc,

Reviewed-by: Renyong Wan <wanry@yunsilicon.com>

Thanks,
Renyong Wan

[PATCH v2 11/12] ethdev: check RSS availability

[David Marchand]

Add RSS capability check in rte_eth_dev_configure() using
dev_info.flow_type_rss_offloads.

When zero, reject Rx modes with RTE_ETH_MQ_RX_RSS_FLAG.

If a driver does not advertise RSS, don't request it in test
applications or examples, as role model citizens.

Remove redundant RSS checks from drivers.

Signed-off-by: David Marchand <david.marchand@redhat.com>
---
Changes since v1:
- updated all test applications and examples,
- relaxed check on RSS request for only one rxq,
- cleaned up unreachable code in cnxk and sfc representor code,

---
 app/graph/ethdev.c                            |  7 +++--
 app/test-eventdev/test_perf_common.c          |  2 ++
 app/test-eventdev/test_pipeline_common.c      |  2 ++
 devtools/check-doc-vs-code.sh                 |  4 ++-
 doc/guides/rel_notes/release_26_11.rst        |  2 ++
 drivers/net/cnxk/cnxk_rep_ops.c               | 21 ++------------
 drivers/net/intel/cpfl/cpfl_ethdev.c          |  3 --
 drivers/net/nfp/nfp_net_common.c              |  7 -----
 drivers/net/octeontx/octeontx_ethdev.c        |  3 +-
 drivers/net/sfc/sfc_repr.c                    | 29 ++++---------------
 drivers/net/sfc/sfc_rx.c                      |  9 +-----
 examples/distributor/main.c                   |  2 ++
 examples/dma/dmafwd.c                         |  2 ++
 .../pipeline_worker_generic.c                 |  2 ++
 .../eventdev_pipeline/pipeline_worker_tx.c    |  2 ++
 examples/ip_reassembly/main.c                 |  2 ++
 examples/ipsec-secgw/ipsec-secgw.c            |  2 ++
 examples/l2fwd-event/l2fwd_common.c           |  2 ++
 examples/l3fwd-graph/main.c                   |  2 ++
 examples/l3fwd/main.c                         |  3 +-
 .../client_server_mp/mp_server/init.c         | 10 ++++++-
 examples/multi_process/symmetric_mp/main.c    |  2 ++
 examples/ntb/ntb_fwd.c                        |  2 ++
 examples/pipeline/obj.c                       |  7 +++--
 examples/qos_meter/main.c                     |  4 +++
 examples/server_node_efd/efd_server/init.c    |  3 ++
 lib/ethdev/rte_ethdev.c                       | 13 +++++++++
 27 files changed, 80 insertions(+), 69 deletions(-)

diff --git a/app/graph/ethdev.c b/app/graph/ethdev.c
index 2f4cf65c96..ee4b9014e8 100644
--- a/app/graph/ethdev.c
+++ b/app/graph/ethdev.c
@@ -426,8 +426,11 @@ ethdev_process(const char *name, struct ethdev_config *params)
 	if (rss) {
 		uint64_t rss_hf = RTE_ETH_RSS_IP | RTE_ETH_RSS_TCP | RTE_ETH_RSS_UDP;
 
-		port_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_RSS;
-		port_conf.rx_adv_conf.rss_conf.rss_hf = rss_hf & port_info.flow_type_rss_offloads;
+		rss_hf &= port_info.flow_type_rss_offloads;
+		if (rss_hf != 0) {
+			port_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_RSS;
+			port_conf.rx_adv_conf.rss_conf.rss_hf = rss_hf;
+		}
 	}
 
 	numa_node = rte_eth_dev_socket_id(port_id);
diff --git a/app/test-eventdev/test_perf_common.c b/app/test-eventdev/test_perf_common.c
index 8201f2351a..a7858854eb 100644
--- a/app/test-eventdev/test_perf_common.c
+++ b/app/test-eventdev/test_perf_common.c
@@ -1917,6 +1917,8 @@ perf_ethdev_setup(struct evt_test *test, struct evt_options *opt)
 
 		local_port_conf.rx_adv_conf.rss_conf.rss_hf &=
 			dev_info.flow_type_rss_offloads;
+		if (local_port_conf.rx_adv_conf.rss_conf.rss_hf == 0)
+			local_port_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE;
 		if (local_port_conf.rx_adv_conf.rss_conf.rss_hf !=
 				port_conf.rx_adv_conf.rss_conf.rss_hf) {
 			evt_info("Port %u modified RSS hash function based on hardware support,"
diff --git a/app/test-eventdev/test_pipeline_common.c b/app/test-eventdev/test_pipeline_common.c
index eaf895869f..b6af0ad987 100644
--- a/app/test-eventdev/test_pipeline_common.c
+++ b/app/test-eventdev/test_pipeline_common.c
@@ -379,6 +379,8 @@ pipeline_ethdev_setup(struct evt_test *test, struct evt_options *opt)
 
 		local_port_conf.rx_adv_conf.rss_conf.rss_hf &=
 			dev_info.flow_type_rss_offloads;
+		if (local_port_conf.rx_adv_conf.rss_conf.rss_hf == 0)
+			local_port_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE;
 		if (local_port_conf.rx_adv_conf.rss_conf.rss_hf !=
 				port_conf.rx_adv_conf.rss_conf.rss_hf) {
 			evt_info("Port %u modified RSS hash function based on hardware support,"
diff --git a/devtools/check-doc-vs-code.sh b/devtools/check-doc-vs-code.sh
index d4e045ca2c..a7b0f400d2 100755
--- a/devtools/check-doc-vs-code.sh
+++ b/devtools/check-doc-vs-code.sh
@@ -183,6 +183,8 @@ check_mq_caps() # <driver>
 
 	check_mq_cap $1 "DCB" "get_dcb_info" '\.get_dcb_info[[:space:]]*=' \
 		'RTE_ETH_MQ_(RX|TX).*DCB'
+	check_mq_cap $1 "RSS hash" "flow_type_rss_offloads" \
+		'flow_type_rss_offloads[[:space:]]*\|?=' 'RTE_ETH_MQ_RX.*RSS'
 	check_mq_cap $1 "VMDq" "max_vmdq_pools" 'max_vmdq_pools[[:space:]]*=' \
 		'RTE_ETH_MQ_(RX|TX).*VMDQ'
 }
@@ -203,7 +205,7 @@ if has_code_change 'RTE_FLOW_.*_TYPE_' ||
 		check_rte_flow $driver
 	done
 fi
-if has_code_change 'get_dcb_info|max_vmdq_pools|RTE_ETH_MQ_.*DCB|RTE_ETH_MQ_.*VMDQ' ||
+if has_code_change 'get_dcb_info|flow_type_rss_offloads|max_vmdq_pools|RTE_ETH_MQ_' ||
 		has_file_change 'doc/guides/nics/features'; then
 	for driver in $(changed_net_drivers); do
 		check_mq_caps $driver
diff --git a/doc/guides/rel_notes/release_26_11.rst b/doc/guides/rel_notes/release_26_11.rst
index 9341769c32..caffd2a611 100644
--- a/doc/guides/rel_notes/release_26_11.rst
+++ b/doc/guides/rel_notes/release_26_11.rst
@@ -428,6 +428,8 @@ API Changes
 
   * DCB modes (Rx ``RTE_ETH_MQ_RX_DCB_FLAG``, Tx ``RTE_ETH_MQ_TX_DCB``/``RTE_ETH_MQ_TX_VMDQ_DCB``)
     are rejected if the driver has no ``get_dcb_info`` callback.
+  * RSS mode (Rx ``RTE_ETH_MQ_RX_RSS_FLAG``) is rejected if the driver reports no
+    ``flow_type_rss_offloads``.
   * VMDq modes (Rx ``RTE_ETH_MQ_RX_VMDQ_FLAG``,
     Tx ``RTE_ETH_MQ_TX_VMDQ_DCB``/``RTE_ETH_MQ_TX_VMDQ_ONLY``) are rejected
     if the driver reports no VMDq pool.
diff --git a/drivers/net/cnxk/cnxk_rep_ops.c b/drivers/net/cnxk/cnxk_rep_ops.c
index 4a9c027bf5..d472cc4b08 100644
--- a/drivers/net/cnxk/cnxk_rep_ops.c
+++ b/drivers/net/cnxk/cnxk_rep_ops.c
@@ -133,9 +133,8 @@ cnxk_rep_representor_info_get(struct rte_eth_dev *ethdev, struct rte_eth_represe
 }
 
 static int
-rep_eth_conf_chk(const struct rte_eth_conf *conf, uint16_t nb_rx_queues)
+rep_eth_conf_chk(const struct rte_eth_conf *conf)
 {
-	const struct rte_eth_rss_conf *rss_conf;
 	int ret = 0;
 
 	if (conf->link_speeds != 0) {
@@ -144,24 +143,10 @@ rep_eth_conf_chk(const struct rte_eth_conf *conf, uint16_t nb_rx_queues)
 	}
 
 	switch (conf->rxmode.mq_mode) {
-	case RTE_ETH_MQ_RX_RSS:
-		if (nb_rx_queues != 1) {
-			plt_err("Rx RSS is not supported with %u queues", nb_rx_queues);
-			ret = -EINVAL;
-			break;
-		}
-
-		rss_conf = &conf->rx_adv_conf.rss_conf;
-		if (rss_conf->rss_key != NULL || rss_conf->rss_key_len != 0 ||
-		    rss_conf->rss_hf != 0) {
-			plt_err("Rx RSS configuration is not supported");
-			ret = -EINVAL;
-		}
-		break;
 	case RTE_ETH_MQ_RX_NONE:
 		break;
 	default:
-		plt_err("Rx mode MQ modes other than RSS not supported");
+		plt_err("Rx mode MQ modes other than none not supported");
 		ret = -EINVAL;
 		break;
 	}
@@ -205,7 +190,7 @@ cnxk_rep_dev_configure(struct rte_eth_dev *ethdev)
 	struct rte_eth_dev_data *ethdev_data = ethdev->data;
 	int rc = -1;
 
-	rc = rep_eth_conf_chk(&ethdev_data->dev_conf, ethdev_data->nb_rx_queues);
+	rc = rep_eth_conf_chk(&ethdev_data->dev_conf);
 	if (rc)
 		goto fail;
 
diff --git a/drivers/net/intel/cpfl/cpfl_ethdev.c b/drivers/net/intel/cpfl/cpfl_ethdev.c
index c235373daf..57a46b0ecc 100644
--- a/drivers/net/intel/cpfl/cpfl_ethdev.c
+++ b/drivers/net/intel/cpfl/cpfl_ethdev.c
@@ -752,9 +752,6 @@ cpfl_dev_configure(struct rte_eth_dev *dev)
 			PMD_INIT_LOG(ERR, "Failed to init rss");
 			return ret;
 		}
-	} else if (conf->rxmode.mq_mode == RTE_ETH_MQ_RX_RSS) {
-		PMD_INIT_LOG(ERR, "RSS is not supported.");
-		return -ENOTSUP;
 	}
 
 	vport->max_pkt_len =
diff --git a/drivers/net/nfp/nfp_net_common.c b/drivers/net/nfp/nfp_net_common.c
index afa0bc0faf..f9957086d2 100644
--- a/drivers/net/nfp/nfp_net_common.c
+++ b/drivers/net/nfp/nfp_net_common.c
@@ -373,13 +373,6 @@ nfp_net_configure(struct rte_eth_dev *dev)
 		return -EINVAL;
 	}
 
-	/* Checking RX mode */
-	if ((rxmode->mq_mode & RTE_ETH_MQ_RX_RSS_FLAG) != 0 &&
-			(hw->super.cap & NFP_NET_CFG_CTRL_RSS_ANY) == 0) {
-		PMD_DRV_LOG(ERR, "RSS not supported.");
-		return -EINVAL;
-	}
-
 	/* Checking MTU set */
 	if (rxmode->mtu > hw->max_mtu + NFP_ETH_OVERHEAD) {
 		PMD_DRV_LOG(ERR, "MTU (%u) larger than the maximum possible frame size (%u).",
diff --git a/drivers/net/octeontx/octeontx_ethdev.c b/drivers/net/octeontx/octeontx_ethdev.c
index e173535d29..e0df23049c 100644
--- a/drivers/net/octeontx/octeontx_ethdev.c
+++ b/drivers/net/octeontx/octeontx_ethdev.c
@@ -499,8 +499,7 @@ octeontx_dev_configure(struct rte_eth_dev *dev)
 		return -EINVAL;
 	}
 
-	if (rxmode->mq_mode != RTE_ETH_MQ_RX_NONE &&
-		rxmode->mq_mode != RTE_ETH_MQ_RX_RSS) {
+	if (rxmode->mq_mode != RTE_ETH_MQ_RX_NONE) {
 		octeontx_log_err("unsupported rx qmode %d", rxmode->mq_mode);
 		return -EINVAL;
 	}
diff --git a/drivers/net/sfc/sfc_repr.c b/drivers/net/sfc/sfc_repr.c
index 2be17d3c8f..079d02dff1 100644
--- a/drivers/net/sfc/sfc_repr.c
+++ b/drivers/net/sfc/sfc_repr.c
@@ -378,10 +378,8 @@ sfc_repr_dev_stop(struct rte_eth_dev *dev)
 }
 
 static int
-sfc_repr_check_conf(struct sfc_repr *sr, uint16_t nb_rx_queues,
-		    const struct rte_eth_conf *conf)
+sfc_repr_check_conf(struct sfc_repr *sr, const struct rte_eth_conf *conf)
 {
-	const struct rte_eth_rss_conf *rss_conf;
 	int ret = 0;
 
 	sfcr_info(sr, "entry");
@@ -392,25 +390,10 @@ sfc_repr_check_conf(struct sfc_repr *sr, uint16_t nb_rx_queues,
 	}
 
 	switch (conf->rxmode.mq_mode) {
-	case RTE_ETH_MQ_RX_RSS:
-		if (nb_rx_queues != 1) {
-			sfcr_err(sr, "Rx RSS is not supported with %u queues",
-				 nb_rx_queues);
-			ret = -EINVAL;
-			break;
-		}
-
-		rss_conf = &conf->rx_adv_conf.rss_conf;
-		if (rss_conf->rss_key != NULL || rss_conf->rss_key_len != 0 ||
-		    rss_conf->rss_hf != 0) {
-			sfcr_err(sr, "Rx RSS configuration is not supported");
-			ret = -EINVAL;
-		}
-		break;
 	case RTE_ETH_MQ_RX_NONE:
 		break;
 	default:
-		sfcr_err(sr, "Rx mode MQ modes other than RSS not supported");
+		sfcr_err(sr, "Rx mode MQ modes other than none not supported");
 		ret = -EINVAL;
 		break;
 	}
@@ -452,8 +435,7 @@ sfc_repr_check_conf(struct sfc_repr *sr, uint16_t nb_rx_queues,
 
 
 static int
-sfc_repr_configure(struct sfc_repr *sr, uint16_t nb_rx_queues,
-		   const struct rte_eth_conf *conf)
+sfc_repr_configure(struct sfc_repr *sr, const struct rte_eth_conf *conf)
 {
 	int ret;
 
@@ -461,7 +443,7 @@ sfc_repr_configure(struct sfc_repr *sr, uint16_t nb_rx_queues,
 
 	SFC_ASSERT(sfc_repr_lock_is_locked(sr));
 
-	ret = sfc_repr_check_conf(sr, nb_rx_queues, conf);
+	ret = sfc_repr_check_conf(sr, conf);
 	if (ret != 0)
 		goto fail_check_conf;
 
@@ -491,8 +473,7 @@ sfc_repr_dev_configure(struct rte_eth_dev *dev)
 	case SFC_ETHDEV_CONFIGURED:
 		/* FALLTHROUGH */
 	case SFC_ETHDEV_INITIALIZED:
-		ret = sfc_repr_configure(sr, dev_data->nb_rx_queues,
-					 &dev_data->dev_conf);
+		ret = sfc_repr_configure(sr, &dev_data->dev_conf);
 		break;
 	default:
 		sfcr_err(sr, "unexpected adapter state %u to configure",
diff --git a/drivers/net/sfc/sfc_rx.c b/drivers/net/sfc/sfc_rx.c
index 1d4101b9e9..aa59931f06 100644
--- a/drivers/net/sfc/sfc_rx.c
+++ b/drivers/net/sfc/sfc_rx.c
@@ -1668,21 +1668,14 @@ sfc_rx_qinit_info(struct sfc_adapter *sa, sfc_sw_index_t sw_index,
 static int
 sfc_rx_check_mode(struct sfc_adapter *sa, struct rte_eth_rxmode *rxmode)
 {
-	struct sfc_adapter_shared * const sas = sfc_sa2shared(sa);
 	uint64_t offloads_supported = sfc_rx_get_dev_offload_caps(sa) |
 				      sfc_rx_get_queue_offload_caps(sa);
-	struct sfc_rss *rss = &sas->rss;
 	int rc = 0;
 
 	switch (rxmode->mq_mode) {
 	case RTE_ETH_MQ_RX_NONE:
-		/* No special checks are required */
-		break;
 	case RTE_ETH_MQ_RX_RSS:
-		if (rss->context_type == EFX_RX_SCALE_UNAVAILABLE) {
-			sfc_err(sa, "RSS is not available");
-			rc = EINVAL;
-		}
+		/* No special checks are required */
 		break;
 	default:
 		sfc_err(sa, "Rx multi-queue mode %u not supported",
diff --git a/examples/distributor/main.c b/examples/distributor/main.c
index 0905482cf0..344da03814 100644
--- a/examples/distributor/main.c
+++ b/examples/distributor/main.c
@@ -135,6 +135,8 @@ port_init(uint16_t port, struct rte_mempool *mbuf_pool)
 
 	port_conf.rx_adv_conf.rss_conf.rss_hf &=
 		dev_info.flow_type_rss_offloads;
+	if (port_conf.rx_adv_conf.rss_conf.rss_hf == 0)
+		port_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE;
 	if (port_conf.rx_adv_conf.rss_conf.rss_hf !=
 			port_conf_default.rx_adv_conf.rss_conf.rss_hf) {
 		printf("Port %u modified RSS hash function based on hardware support,"
diff --git a/examples/dma/dmafwd.c b/examples/dma/dmafwd.c
index 8d195faddb..fea1c3e669 100644
--- a/examples/dma/dmafwd.c
+++ b/examples/dma/dmafwd.c
@@ -922,6 +922,8 @@ port_init(uint16_t portid, struct rte_mempool *mbuf_pool)
 
 	local_port_conf.rx_adv_conf.rss_conf.rss_hf &=
 		dev_info.flow_type_rss_offloads;
+	if (local_port_conf.rx_adv_conf.rss_conf.rss_hf == 0)
+		local_port_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE;
 	ret = rte_eth_dev_configure(portid, nb_queues, 1, &local_port_conf);
 	if (ret < 0)
 		rte_exit(EXIT_FAILURE, "Cannot configure device:"
diff --git a/examples/eventdev_pipeline/pipeline_worker_generic.c b/examples/eventdev_pipeline/pipeline_worker_generic.c
index c0de5b1e11..77d9d91043 100644
--- a/examples/eventdev_pipeline/pipeline_worker_generic.c
+++ b/examples/eventdev_pipeline/pipeline_worker_generic.c
@@ -338,6 +338,8 @@ port_init(uint8_t port, struct rte_mempool *mbuf_pool)
 
 	port_conf.rx_adv_conf.rss_conf.rss_hf &=
 		dev_info.flow_type_rss_offloads;
+	if (port_conf.rx_adv_conf.rss_conf.rss_hf == 0)
+		port_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE;
 	if (port_conf.rx_adv_conf.rss_conf.rss_hf !=
 			port_conf_default.rx_adv_conf.rss_conf.rss_hf) {
 		printf("Port %u modified RSS hash function based on hardware support,"
diff --git a/examples/eventdev_pipeline/pipeline_worker_tx.c b/examples/eventdev_pipeline/pipeline_worker_tx.c
index a3090e3b49..174976a1b5 100644
--- a/examples/eventdev_pipeline/pipeline_worker_tx.c
+++ b/examples/eventdev_pipeline/pipeline_worker_tx.c
@@ -683,6 +683,8 @@ port_init(uint8_t port, struct rte_mempool *mbuf_pool)
 
 	port_conf.rx_adv_conf.rss_conf.rss_hf &=
 		dev_info.flow_type_rss_offloads;
+	if (port_conf.rx_adv_conf.rss_conf.rss_hf == 0)
+		port_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE;
 	if (port_conf.rx_adv_conf.rss_conf.rss_hf !=
 			port_conf_default.rx_adv_conf.rss_conf.rss_hf) {
 		printf("Port %u modified RSS hash function based on hardware support,"
diff --git a/examples/ip_reassembly/main.c b/examples/ip_reassembly/main.c
index 0814d47a66..321a50b1f6 100644
--- a/examples/ip_reassembly/main.c
+++ b/examples/ip_reassembly/main.c
@@ -1102,6 +1102,8 @@ main(int argc, char **argv)
 
 		local_port_conf.rx_adv_conf.rss_conf.rss_hf &=
 			dev_info.flow_type_rss_offloads;
+		if (local_port_conf.rx_adv_conf.rss_conf.rss_hf == 0)
+			local_port_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE;
 		if (local_port_conf.rx_adv_conf.rss_conf.rss_hf !=
 				port_conf.rx_adv_conf.rss_conf.rss_hf) {
 			printf("Port %u modified RSS hash function based on hardware support,"
diff --git a/examples/ipsec-secgw/ipsec-secgw.c b/examples/ipsec-secgw/ipsec-secgw.c
index 4816bcdd82..2741faf04e 100644
--- a/examples/ipsec-secgw/ipsec-secgw.c
+++ b/examples/ipsec-secgw/ipsec-secgw.c
@@ -2016,6 +2016,8 @@ port_init(uint16_t portid, uint64_t req_rx_offloads, uint64_t req_tx_offloads,
 
 	local_port_conf.rx_adv_conf.rss_conf.rss_hf &=
 		dev_info.flow_type_rss_offloads;
+	if (local_port_conf.rx_adv_conf.rss_conf.rss_hf == 0)
+		local_port_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE;
 	if (local_port_conf.rx_adv_conf.rss_conf.rss_hf !=
 			port_conf.rx_adv_conf.rss_conf.rss_hf) {
 		printf("Port %u modified RSS hash function based on hardware support,"
diff --git a/examples/l2fwd-event/l2fwd_common.c b/examples/l2fwd-event/l2fwd_common.c
index b4d5edfde0..caacf6cd63 100644
--- a/examples/l2fwd-event/l2fwd_common.c
+++ b/examples/l2fwd-event/l2fwd_common.c
@@ -48,6 +48,8 @@ l2fwd_event_init_ports(struct l2fwd_resources *rsrc)
 				  port_id, strerror(-ret));
 		local_port_conf.rx_adv_conf.rss_conf.rss_hf &=
 			dev_info.flow_type_rss_offloads;
+		if (local_port_conf.rx_adv_conf.rss_conf.rss_hf == 0)
+			local_port_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE;
 		if (local_port_conf.rx_adv_conf.rss_conf.rss_hf !=
 				port_conf.rx_adv_conf.rss_conf.rss_hf) {
 			printf("Port %u modified RSS hash function based on hardware support,"
diff --git a/examples/l3fwd-graph/main.c b/examples/l3fwd-graph/main.c
index 4fa302f5b0..08fe177fc2 100644
--- a/examples/l3fwd-graph/main.c
+++ b/examples/l3fwd-graph/main.c
@@ -1092,6 +1092,8 @@ main(int argc, char **argv)
 
 		local_port_conf.rx_adv_conf.rss_conf.rss_hf &=
 			dev_info.flow_type_rss_offloads;
+		if (local_port_conf.rx_adv_conf.rss_conf.rss_hf == 0)
+			local_port_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE;
 		if (local_port_conf.rx_adv_conf.rss_conf.rss_hf !=
 		    port_conf.rx_adv_conf.rss_conf.rss_hf) {
 			printf("Port %u modified RSS hash function based on "
diff --git a/examples/l3fwd/main.c b/examples/l3fwd/main.c
index 6866811526..9532150a47 100644
--- a/examples/l3fwd/main.c
+++ b/examples/l3fwd/main.c
@@ -1394,7 +1394,8 @@ l3fwd_poll_resource_setup(void)
 		local_port_conf.rx_adv_conf.rss_conf.rss_hf &=
 			dev_info.flow_type_rss_offloads;
 
-		if (disable_rss == 1 || dev_info.max_rx_queues == 1)
+		if (disable_rss == 1 || dev_info.max_rx_queues == 1 ||
+				local_port_conf.rx_adv_conf.rss_conf.rss_hf == 0)
 			local_port_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE;
 
 		if (local_port_conf.rx_adv_conf.rss_conf.rss_hf !=
diff --git a/examples/multi_process/client_server_mp/mp_server/init.c b/examples/multi_process/client_server_mp/mp_server/init.c
index f3b9b49380..09cb363ab8 100644
--- a/examples/multi_process/client_server_mp/mp_server/init.c
+++ b/examples/multi_process/client_server_mp/mp_server/init.c
@@ -91,7 +91,7 @@ static int
 init_port(uint16_t port_num)
 {
 	/* for port configuration all features are off by default */
-	const struct rte_eth_conf port_conf = {
+	struct rte_eth_conf port_conf = {
 		.rxmode = {
 			.mq_mode = RTE_ETH_MQ_RX_RSS
 		}
@@ -99,6 +99,7 @@ init_port(uint16_t port_num)
 	const uint16_t rx_rings = 1, tx_rings = num_clients;
 	uint16_t rx_ring_size = RTE_MP_RX_DESC_DEFAULT;
 	uint16_t tx_ring_size = RTE_MP_TX_DESC_DEFAULT;
+	struct rte_eth_dev_info dev_info;
 
 	uint16_t q;
 	int retval;
@@ -106,6 +107,13 @@ init_port(uint16_t port_num)
 	printf("Port %u init ... ", port_num);
 	fflush(stdout);
 
+	retval = rte_eth_dev_info_get(port_num, &dev_info);
+	if (retval != 0)
+		return retval;
+
+	if (dev_info.flow_type_rss_offloads == 0)
+		port_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE;
+
 	/* Standard DPDK port initialisation - config port, then set up
 	 * rx and tx rings */
 	if ((retval = rte_eth_dev_configure(port_num, rx_rings, tx_rings,
diff --git a/examples/multi_process/symmetric_mp/main.c b/examples/multi_process/symmetric_mp/main.c
index e2d185ab1b..d250a738f8 100644
--- a/examples/multi_process/symmetric_mp/main.c
+++ b/examples/multi_process/symmetric_mp/main.c
@@ -228,6 +228,8 @@ smp_port_init(uint16_t port, struct rte_mempool *mbuf_pool,
 
 	rss_hf_tmp = port_conf.rx_adv_conf.rss_conf.rss_hf;
 	port_conf.rx_adv_conf.rss_conf.rss_hf &= info.flow_type_rss_offloads;
+	if (port_conf.rx_adv_conf.rss_conf.rss_hf == 0)
+		port_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE;
 	if (port_conf.rx_adv_conf.rss_conf.rss_hf != rss_hf_tmp) {
 		printf("Port %u modified RSS hash function based on hardware support,"
 			"requested:%#"PRIx64" configured:%#"PRIx64"\n",
diff --git a/examples/ntb/ntb_fwd.c b/examples/ntb/ntb_fwd.c
index bbacce97db..30716d427d 100644
--- a/examples/ntb/ntb_fwd.c
+++ b/examples/ntb/ntb_fwd.c
@@ -1310,6 +1310,8 @@ main(int argc, char **argv)
 
 		eth_pconf.rx_adv_conf.rss_conf.rss_hf &=
 				ethdev_info.flow_type_rss_offloads;
+		if (eth_pconf.rx_adv_conf.rss_conf.rss_hf == 0)
+			eth_pconf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE;
 		ret = rte_eth_dev_configure(eth_port_id, num_queues,
 					    num_queues, &eth_pconf);
 		if (ret)
diff --git a/examples/pipeline/obj.c b/examples/pipeline/obj.c
index d39034ec22..9f49df190e 100644
--- a/examples/pipeline/obj.c
+++ b/examples/pipeline/obj.c
@@ -118,8 +118,11 @@ ethdev_config(const char *name, struct ethdev_params *params)
 	if (rss) {
 		uint64_t rss_hf = RTE_ETH_RSS_IP | RTE_ETH_RSS_TCP | RTE_ETH_RSS_UDP;
 
-		port_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_RSS;
-		port_conf.rx_adv_conf.rss_conf.rss_hf = rss_hf & port_info.flow_type_rss_offloads;
+		rss_hf &= port_info.flow_type_rss_offloads;
+		if (rss_hf != 0) {
+			port_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_RSS;
+			port_conf.rx_adv_conf.rss_conf.rss_hf = rss_hf;
+		}
 	}
 
 	numa_node = rte_eth_dev_socket_id(port_id);
diff --git a/examples/qos_meter/main.c b/examples/qos_meter/main.c
index da1b0b2287..59759355cd 100644
--- a/examples/qos_meter/main.c
+++ b/examples/qos_meter/main.c
@@ -336,6 +336,8 @@ main(int argc, char **argv)
 		conf.txmode.offloads |= RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE;
 
 	conf.rx_adv_conf.rss_conf.rss_hf &= dev_info.flow_type_rss_offloads;
+	if (conf.rx_adv_conf.rss_conf.rss_hf == 0)
+		conf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE;
 	if (conf.rx_adv_conf.rss_conf.rss_hf !=
 			port_conf.rx_adv_conf.rss_conf.rss_hf) {
 		printf("Port %u modified RSS hash function based on hardware support,"
@@ -382,6 +384,8 @@ main(int argc, char **argv)
 		conf.txmode.offloads |= RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE;
 
 	conf.rx_adv_conf.rss_conf.rss_hf &= dev_info.flow_type_rss_offloads;
+	if (conf.rx_adv_conf.rss_conf.rss_hf == 0)
+		conf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE;
 	if (conf.rx_adv_conf.rss_conf.rss_hf !=
 			port_conf.rx_adv_conf.rss_conf.rss_hf) {
 		printf("Port %u modified RSS hash function based on hardware support,"
diff --git a/examples/server_node_efd/efd_server/init.c b/examples/server_node_efd/efd_server/init.c
index 9a20831a0d..9644627219 100644
--- a/examples/server_node_efd/efd_server/init.c
+++ b/examples/server_node_efd/efd_server/init.c
@@ -118,6 +118,9 @@ init_port(uint16_t port_num)
 		port_conf.txmode.offloads |=
 			RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE;
 
+	if (dev_info.flow_type_rss_offloads == 0)
+		port_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE;
+
 	/*
 	 * Standard DPDK port initialisation - config port, then set up
 	 * rx and tx rings.
diff --git a/lib/ethdev/rte_ethdev.c b/lib/ethdev/rte_ethdev.c
index 39a895c9e4..0988f69275 100644
--- a/lib/ethdev/rte_ethdev.c
+++ b/lib/ethdev/rte_ethdev.c
@@ -1526,6 +1526,19 @@ rte_eth_dev_configure(uint16_t port_id, uint16_t nb_rx_q, uint16_t nb_tx_q,
 		goto rollback;
 	}
 
+	if (dev_info.flow_type_rss_offloads == 0 &&
+			(dev_conf->rxmode.mq_mode & RTE_ETH_MQ_RX_RSS_FLAG) != 0) {
+		if (nb_rx_q > 1) {
+			RTE_ETHDEV_LOG_LINE(ERR, "Ethdev port_id=%u does not support RSS rx mode",
+				port_id);
+			ret = -EINVAL;
+			goto rollback;
+		}
+		RTE_ETHDEV_LOG_LINE(NOTICE, "Ethdev port_id=%u does not support RSS rx mode, ignoring",
+			port_id);
+		dev->data->dev_conf.rxmode.mq_mode &= ~RTE_ETH_MQ_RX_RSS_FLAG;
+	}
+
 	dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf =
 		rte_eth_rss_hf_refine(dev_conf->rx_adv_conf.rss_conf.rss_hf);
 
-- 
2.54.0

[PATCH v2 12/12] ethdev: check unknown Rx/Tx multi-queue modes

[David Marchand]

Add validation in rte_eth_dev_configure() to reject invalid multi-queue
mode values early, before passing them to drivers.
If we do not enforce valid values are passed by an application,
this application might face issues in the future when we add more modes.

For Rx mq_mode, reject any bits outside the defined RSS, DCB, and VMDq
flags.
For Tx mq_mode, reject values greater than RTE_ETH_MQ_TX_VMDQ_ONLY.

Thanks to this, many drivers can stop caring about unexpected modes.

Signed-off-by: David Marchand <david.marchand@redhat.com>
---
Changes since v1:
- updated axgbe, igc, thunderx, 

---
 doc/guides/rel_notes/release_26_11.rst |  1 +
 drivers/net/axgbe/axgbe_ethdev.c       | 21 ++-------------------
 drivers/net/bnxt/bnxt_rxq.c            | 14 ++------------
 drivers/net/cnxk/cnxk_ethdev.c         | 11 -----------
 drivers/net/cnxk/cnxk_rep_ops.c        | 14 --------------
 drivers/net/intel/cpfl/cpfl_ethdev.c   | 13 -------------
 drivers/net/intel/e1000/igb_ethdev.c   | 15 +--------------
 drivers/net/intel/e1000/igc_ethdev.c   | 19 -------------------
 drivers/net/intel/e1000/igc_txrx.c     | 19 +++----------------
 drivers/net/intel/idpf/idpf_ethdev.c   |  6 ------
 drivers/net/mvneta/mvneta_ethdev.c     |  7 -------
 drivers/net/mvpp2/mrvl_ethdev.c        |  7 -------
 drivers/net/nbl/nbl_dev/nbl_dev.c      |  6 ------
 drivers/net/nfp/nfp_net_common.c       |  8 --------
 drivers/net/octeontx/octeontx_ethdev.c | 10 ----------
 drivers/net/qede/qede_ethdev.c         |  5 -----
 drivers/net/sfc/sfc_repr.c             | 14 --------------
 drivers/net/sfc/sfc_rx.c               | 22 ++--------------------
 drivers/net/sfc/sfc_tx.c               |  9 ---------
 drivers/net/thunderx/nicvf_ethdev.c    | 20 ++++----------------
 drivers/net/virtio/virtio_ethdev.c     | 14 --------------
 drivers/net/zxdh/zxdh_ethdev.c         | 19 -------------------
 lib/ethdev/rte_ethdev.c                | 17 +++++++++++++++++
 23 files changed, 32 insertions(+), 259 deletions(-)

diff --git a/doc/guides/rel_notes/release_26_11.rst b/doc/guides/rel_notes/release_26_11.rst
index caffd2a611..4c00f51d89 100644
--- a/doc/guides/rel_notes/release_26_11.rst
+++ b/doc/guides/rel_notes/release_26_11.rst
@@ -433,6 +433,7 @@ API Changes
   * VMDq modes (Rx ``RTE_ETH_MQ_RX_VMDQ_FLAG``,
     Tx ``RTE_ETH_MQ_TX_VMDQ_DCB``/``RTE_ETH_MQ_TX_VMDQ_ONLY``) are rejected
     if the driver reports no VMDq pool.
+  * Unknown Rx and Tx modes are rejected.
 
 * ethdev: Updated VMDq related API.
 
diff --git a/drivers/net/axgbe/axgbe_ethdev.c b/drivers/net/axgbe/axgbe_ethdev.c
index 93e198ba95..2411e74d97 100644
--- a/drivers/net/axgbe/axgbe_ethdev.c
+++ b/drivers/net/axgbe/axgbe_ethdev.c
@@ -353,20 +353,6 @@ axgbe_dev_configure(struct rte_eth_dev *dev)
 	return 0;
 }
 
-static int
-axgbe_dev_rx_mq_config(struct rte_eth_dev *dev)
-{
-	struct axgbe_port *pdata = dev->data->dev_private;
-
-	if (dev->data->dev_conf.rxmode.mq_mode == RTE_ETH_MQ_RX_RSS)
-		pdata->rss_enable = 1;
-	else if (dev->data->dev_conf.rxmode.mq_mode == RTE_ETH_MQ_RX_NONE)
-		pdata->rss_enable = 0;
-	else
-		return  -1;
-	return 0;
-}
-
 static int
 axgbe_dev_start(struct rte_eth_dev *dev)
 {
@@ -379,11 +365,8 @@ axgbe_dev_start(struct rte_eth_dev *dev)
 	PMD_INIT_FUNC_TRACE();
 
 	/* Multiqueue RSS */
-	ret = axgbe_dev_rx_mq_config(dev);
-	if (ret) {
-		PMD_DRV_LOG_LINE(ERR, "Unable to config RX MQ");
-		return ret;
-	}
+	pdata->rss_enable = dev->data->dev_conf.rxmode.mq_mode == RTE_ETH_MQ_RX_RSS;
+
 	ret = axgbe_phy_reset(pdata);
 	if (ret) {
 		PMD_DRV_LOG_LINE(ERR, "phy reset failed");
diff --git a/drivers/net/bnxt/bnxt_rxq.c b/drivers/net/bnxt/bnxt_rxq.c
index 9743296b39..11115db1fd 100644
--- a/drivers/net/bnxt/bnxt_rxq.c
+++ b/drivers/net/bnxt/bnxt_rxq.c
@@ -85,18 +85,8 @@ int bnxt_mq_rx_configure(struct bnxt *bp)
 
 	bp->nr_vnics = 0;
 
-	/* Multi-queue mode */
-	switch (dev_conf->rxmode.mq_mode) {
-	case RTE_ETH_MQ_RX_NONE:
-	case RTE_ETH_MQ_RX_RSS:
-		pools = bp->rx_cosq_cnt ? bp->rx_cosq_cnt : pools;
-		break;
-	default:
-		PMD_DRV_LOG_LINE(ERR, "Unsupported mq_mode %d",
-				 dev_conf->rxmode.mq_mode);
-		return -EINVAL;
-	}
-
+	if (bp->rx_cosq_cnt)
+		pools = bp->rx_cosq_cnt;
 	pools = RTE_MIN(pools, bp->rx_cp_nr_rings);
 	nb_q_per_grp = bp->rx_cp_nr_rings / pools;
 	PMD_DRV_LOG_LINE(DEBUG, "pools = %u nb_q_per_grp = %u",
diff --git a/drivers/net/cnxk/cnxk_ethdev.c b/drivers/net/cnxk/cnxk_ethdev.c
index 9a4da870cd..0bd0302d6a 100644
--- a/drivers/net/cnxk/cnxk_ethdev.c
+++ b/drivers/net/cnxk/cnxk_ethdev.c
@@ -1485,17 +1485,6 @@ cnxk_nix_configure(struct rte_eth_dev *eth_dev)
 		goto fail_configure;
 	}
 
-	if (rxmode->mq_mode != RTE_ETH_MQ_RX_NONE &&
-	    rxmode->mq_mode != RTE_ETH_MQ_RX_RSS) {
-		plt_err("Unsupported mq rx mode %d", rxmode->mq_mode);
-		goto fail_configure;
-	}
-
-	if (txmode->mq_mode != RTE_ETH_MQ_TX_NONE) {
-		plt_err("Unsupported mq tx mode %d", txmode->mq_mode);
-		goto fail_configure;
-	}
-
 	/* Free the resources allocated from the previous configure */
 	if (dev->configured == 1) {
 		/* Unregister queue irq's */
diff --git a/drivers/net/cnxk/cnxk_rep_ops.c b/drivers/net/cnxk/cnxk_rep_ops.c
index d472cc4b08..d4f260af20 100644
--- a/drivers/net/cnxk/cnxk_rep_ops.c
+++ b/drivers/net/cnxk/cnxk_rep_ops.c
@@ -142,20 +142,6 @@ rep_eth_conf_chk(const struct rte_eth_conf *conf)
 		ret = -EINVAL;
 	}
 
-	switch (conf->rxmode.mq_mode) {
-	case RTE_ETH_MQ_RX_NONE:
-		break;
-	default:
-		plt_err("Rx mode MQ modes other than none not supported");
-		ret = -EINVAL;
-		break;
-	}
-
-	if (conf->txmode.mq_mode != RTE_ETH_MQ_TX_NONE) {
-		plt_err("Tx mode MQ modes not supported");
-		ret = -EINVAL;
-	}
-
 	if (conf->lpbk_mode != 0) {
 		plt_err("loopback not supported");
 		ret = -EINVAL;
diff --git a/drivers/net/intel/cpfl/cpfl_ethdev.c b/drivers/net/intel/cpfl/cpfl_ethdev.c
index 57a46b0ecc..1667ff69a4 100644
--- a/drivers/net/intel/cpfl/cpfl_ethdev.c
+++ b/drivers/net/intel/cpfl/cpfl_ethdev.c
@@ -707,12 +707,6 @@ cpfl_dev_configure(struct rte_eth_dev *dev)
 		return -ENOTSUP;
 	}
 
-	if (conf->txmode.mq_mode != RTE_ETH_MQ_TX_NONE) {
-		PMD_INIT_LOG(ERR, "Multi-queue TX mode %d is not supported",
-			     conf->txmode.mq_mode);
-		return -ENOTSUP;
-	}
-
 	if (conf->lpbk_mode != 0) {
 		PMD_INIT_LOG(ERR, "Loopback operation mode %d is not supported",
 			     conf->lpbk_mode);
@@ -739,13 +733,6 @@ cpfl_dev_configure(struct rte_eth_dev *dev)
 		return -ENOTSUP;
 	}
 
-	if (conf->rxmode.mq_mode != RTE_ETH_MQ_RX_RSS &&
-	    conf->rxmode.mq_mode != RTE_ETH_MQ_RX_NONE) {
-		PMD_INIT_LOG(ERR, "RX mode %d is not supported.",
-			     conf->rxmode.mq_mode);
-		return -EINVAL;
-	}
-
 	if (base->caps.rss_caps != 0 && dev->data->nb_rx_queues != 0) {
 		ret = cpfl_init_rss(vport);
 		if (ret != 0) {
diff --git a/drivers/net/intel/e1000/igb_ethdev.c b/drivers/net/intel/e1000/igb_ethdev.c
index 181af58169..c65a468b26 100644
--- a/drivers/net/intel/e1000/igb_ethdev.c
+++ b/drivers/net/intel/e1000/igb_ethdev.c
@@ -1179,25 +1179,12 @@ igb_check_mq_mode(struct rte_eth_dev *dev)
 			return -EINVAL;
 		}
 	} else {
-		/* To no break software that set invalid mode, only display
-		 * warning if invalid mode is used.
-		 */
-		if (rx_mq_mode != RTE_ETH_MQ_RX_NONE &&
-		    rx_mq_mode != RTE_ETH_MQ_RX_VMDQ_ONLY &&
-		    rx_mq_mode != RTE_ETH_MQ_RX_RSS) {
+		if (rx_mq_mode == RTE_ETH_MQ_RX_VMDQ_RSS) {
 			/* RSS together with VMDq not supported*/
 			PMD_INIT_LOG(ERR, "RX mode %d is not supported.",
 				     rx_mq_mode);
 			return -EINVAL;
 		}
-
-		if (tx_mq_mode != RTE_ETH_MQ_TX_NONE &&
-		    tx_mq_mode != RTE_ETH_MQ_TX_VMDQ_ONLY) {
-			PMD_INIT_LOG(WARNING, "TX mode %d is not supported."
-					" Due to txmode is meaningless in this"
-					" driver, just ignore.",
-					tx_mq_mode);
-		}
 	}
 	return 0;
 }
diff --git a/drivers/net/intel/e1000/igc_ethdev.c b/drivers/net/intel/e1000/igc_ethdev.c
index 73dd5dd1a3..2c8ff57e6b 100644
--- a/drivers/net/intel/e1000/igc_ethdev.c
+++ b/drivers/net/intel/e1000/igc_ethdev.c
@@ -344,30 +344,11 @@ static const struct eth_dev_ops eth_igc_ops = {
 static int
 igc_check_mq_mode(struct rte_eth_dev *dev)
 {
-	enum rte_eth_rx_mq_mode rx_mq_mode = dev->data->dev_conf.rxmode.mq_mode;
-	enum rte_eth_tx_mq_mode tx_mq_mode = dev->data->dev_conf.txmode.mq_mode;
-
 	if (RTE_ETH_DEV_SRIOV(dev).active != 0) {
 		PMD_INIT_LOG(ERR, "SRIOV is not supported.");
 		return -EINVAL;
 	}
 
-	if (rx_mq_mode != RTE_ETH_MQ_RX_NONE &&
-		rx_mq_mode != RTE_ETH_MQ_RX_RSS) {
-		/* RSS together with VMDq not supported*/
-		PMD_INIT_LOG(ERR, "RX mode %d is not supported.",
-				rx_mq_mode);
-		return -EINVAL;
-	}
-
-	/* To no break software that set invalid mode, only display
-	 * warning if invalid mode is used.
-	 */
-	if (tx_mq_mode != RTE_ETH_MQ_TX_NONE)
-		PMD_INIT_LOG(WARNING,
-			"TX mode %d is not supported. Due to meaningless in this driver, just ignore",
-			tx_mq_mode);
-
 	return 0;
 }
 
diff --git a/drivers/net/intel/e1000/igc_txrx.c b/drivers/net/intel/e1000/igc_txrx.c
index d61fdb33a8..dca66c3c2c 100644
--- a/drivers/net/intel/e1000/igc_txrx.c
+++ b/drivers/net/intel/e1000/igc_txrx.c
@@ -991,23 +991,10 @@ igc_dev_mq_rx_configure(struct rte_eth_dev *dev)
 		return -EINVAL;
 	}
 
-	switch (dev->data->dev_conf.rxmode.mq_mode) {
-	case RTE_ETH_MQ_RX_RSS:
-		igc_rss_configure(dev);
-		break;
-	case RTE_ETH_MQ_RX_NONE:
-		/*
-		 * configure RSS register for following,
-		 * then disable the RSS logic
-		 */
-		igc_rss_configure(dev);
+	igc_rss_configure(dev);
+	if (dev->data->dev_conf.rxmode.mq_mode != RTE_ETH_MQ_RX_RSS)
 		igc_rss_disable(dev);
-		break;
-	default:
-		PMD_DRV_LOG(ERR, "rx mode(%d) not supported!",
-			dev->data->dev_conf.rxmode.mq_mode);
-		return -EINVAL;
-	}
+
 	return 0;
 }
 
diff --git a/drivers/net/intel/idpf/idpf_ethdev.c b/drivers/net/intel/idpf/idpf_ethdev.c
index fbd50d0a91..0b645206e7 100644
--- a/drivers/net/intel/idpf/idpf_ethdev.c
+++ b/drivers/net/intel/idpf/idpf_ethdev.c
@@ -650,12 +650,6 @@ idpf_dev_configure(struct rte_eth_dev *dev)
 		return -ENOTSUP;
 	}
 
-	if (conf->txmode.mq_mode != RTE_ETH_MQ_TX_NONE) {
-		PMD_INIT_LOG(ERR, "Multi-queue TX mode %d is not supported",
-			     conf->txmode.mq_mode);
-		return -ENOTSUP;
-	}
-
 	if (conf->lpbk_mode != 0) {
 		PMD_INIT_LOG(ERR, "Loopback operation mode %d is not supported",
 			     conf->lpbk_mode);
diff --git a/drivers/net/mvneta/mvneta_ethdev.c b/drivers/net/mvneta/mvneta_ethdev.c
index eef9758224..975d3da81e 100644
--- a/drivers/net/mvneta/mvneta_ethdev.c
+++ b/drivers/net/mvneta/mvneta_ethdev.c
@@ -120,13 +120,6 @@ mvneta_dev_configure(struct rte_eth_dev *dev)
 	struct mvneta_priv *priv = dev->data->dev_private;
 	struct neta_ppio_params *ppio_params;
 
-	if (dev->data->dev_conf.rxmode.mq_mode != RTE_ETH_MQ_RX_NONE) {
-		MVNETA_LOG(INFO, "Unsupported RSS and rx multi queue mode %d",
-			dev->data->dev_conf.rxmode.mq_mode);
-		if (dev->data->nb_rx_queues > 1)
-			return -EINVAL;
-	}
-
 	if (dev->data->dev_conf.txmode.offloads & RTE_ETH_TX_OFFLOAD_MULTI_SEGS)
 		priv->multiseg = 1;
 
diff --git a/drivers/net/mvpp2/mrvl_ethdev.c b/drivers/net/mvpp2/mrvl_ethdev.c
index 2df3a77e7f..9be3e5a92d 100644
--- a/drivers/net/mvpp2/mrvl_ethdev.c
+++ b/drivers/net/mvpp2/mrvl_ethdev.c
@@ -483,13 +483,6 @@ mrvl_dev_configure(struct rte_eth_dev *dev)
 		return -EINVAL;
 	}
 
-	if (dev->data->dev_conf.rxmode.mq_mode != RTE_ETH_MQ_RX_NONE &&
-	    dev->data->dev_conf.rxmode.mq_mode != RTE_ETH_MQ_RX_RSS) {
-		MRVL_LOG(INFO, "Unsupported rx multi queue mode %d",
-			dev->data->dev_conf.rxmode.mq_mode);
-		return -EINVAL;
-	}
-
 	if (dev->data->dev_conf.rxmode.mtu > priv->max_mtu) {
 		MRVL_LOG(ERR, "MTU %u is larger than max_mtu %u",
 			 dev->data->dev_conf.rxmode.mtu,
diff --git a/drivers/net/nbl/nbl_dev/nbl_dev.c b/drivers/net/nbl/nbl_dev/nbl_dev.c
index e41732ccd3..d28eea082f 100644
--- a/drivers/net/nbl/nbl_dev/nbl_dev.c
+++ b/drivers/net/nbl/nbl_dev/nbl_dev.c
@@ -14,7 +14,6 @@ static int nbl_dev_port_configure(struct nbl_adapter *adapter)
 int nbl_dev_configure(struct rte_eth_dev *eth_dev)
 {
 	struct rte_eth_dev_data *dev_data = eth_dev->data;
-	enum rte_eth_rx_mq_mode rx_mq_mode = eth_dev->data->dev_conf.rxmode.mq_mode;
 	struct nbl_adapter *adapter = ETH_DEV_TO_NBL_DEV_PF_PRIV(eth_dev);
 	int ret;
 
@@ -23,11 +22,6 @@ int nbl_dev_configure(struct rte_eth_dev *eth_dev)
 
 	NBL_LOG(DEBUG, "Begin to configure the device, state: %d", adapter->state);
 
-	if (rx_mq_mode != RTE_ETH_MQ_RX_NONE && rx_mq_mode != RTE_ETH_MQ_RX_RSS) {
-		NBL_LOG(ERR, "Rx mq mode %d is not supported", rx_mq_mode);
-		return -ENOTSUP;
-	}
-
 	dev_data->dev_conf.intr_conf.lsc = 0;
 
 	switch (adapter->state) {
diff --git a/drivers/net/nfp/nfp_net_common.c b/drivers/net/nfp/nfp_net_common.c
index f9957086d2..97841c00b5 100644
--- a/drivers/net/nfp/nfp_net_common.c
+++ b/drivers/net/nfp/nfp_net_common.c
@@ -357,22 +357,14 @@ nfp_net_configure(struct rte_eth_dev *dev)
 	struct nfp_net_hw *hw;
 	struct rte_eth_conf *dev_conf;
 	struct rte_eth_rxmode *rxmode;
-	struct rte_eth_txmode *txmode;
 
 	hw = nfp_net_get_hw(dev);
 	dev_conf = &dev->data->dev_conf;
 	rxmode = &dev_conf->rxmode;
-	txmode = &dev_conf->txmode;
 
 	if ((rxmode->mq_mode & RTE_ETH_MQ_RX_RSS_FLAG) != 0)
 		rxmode->offloads |= RTE_ETH_RX_OFFLOAD_RSS_HASH;
 
-	/* Checking TX mode */
-	if (txmode->mq_mode != RTE_ETH_MQ_TX_NONE) {
-		PMD_DRV_LOG(ERR, "TX mq_mode DCB and VMDq not supported.");
-		return -EINVAL;
-	}
-
 	/* Checking MTU set */
 	if (rxmode->mtu > hw->max_mtu + NFP_ETH_OVERHEAD) {
 		PMD_DRV_LOG(ERR, "MTU (%u) larger than the maximum possible frame size (%u).",
diff --git a/drivers/net/octeontx/octeontx_ethdev.c b/drivers/net/octeontx/octeontx_ethdev.c
index e0df23049c..bde4c2c615 100644
--- a/drivers/net/octeontx/octeontx_ethdev.c
+++ b/drivers/net/octeontx/octeontx_ethdev.c
@@ -494,16 +494,6 @@ octeontx_dev_configure(struct rte_eth_dev *dev)
 		return -EINVAL;
 	}
 
-	if (txmode->mq_mode) {
-		octeontx_log_err("tx mq_mode DCB or VMDq not supported");
-		return -EINVAL;
-	}
-
-	if (rxmode->mq_mode != RTE_ETH_MQ_RX_NONE) {
-		octeontx_log_err("unsupported rx qmode %d", rxmode->mq_mode);
-		return -EINVAL;
-	}
-
 	if (!(txmode->offloads & RTE_ETH_TX_OFFLOAD_MT_LOCKFREE)) {
 		PMD_INIT_LOG(NOTICE, "cant disable lockfree tx");
 		txmode->offloads |= RTE_ETH_TX_OFFLOAD_MT_LOCKFREE;
diff --git a/drivers/net/qede/qede_ethdev.c b/drivers/net/qede/qede_ethdev.c
index c41177b86a..93fc75ad0a 100644
--- a/drivers/net/qede/qede_ethdev.c
+++ b/drivers/net/qede/qede_ethdev.c
@@ -1289,11 +1289,6 @@ static int qede_dev_configure(struct rte_eth_dev *eth_dev)
 		DP_NOTICE(edev, false,
 			  "Invalid devargs supplied, requested change will not take effect\n");
 
-	if (!(rxmode->mq_mode == RTE_ETH_MQ_RX_NONE ||
-	      rxmode->mq_mode == RTE_ETH_MQ_RX_RSS)) {
-		DP_ERR(edev, "Unsupported multi-queue mode\n");
-		return -ENOTSUP;
-	}
 	/* Flow director mode check */
 	if (qede_check_fdir_support(eth_dev))
 		return -ENOTSUP;
diff --git a/drivers/net/sfc/sfc_repr.c b/drivers/net/sfc/sfc_repr.c
index 079d02dff1..629cb7af1c 100644
--- a/drivers/net/sfc/sfc_repr.c
+++ b/drivers/net/sfc/sfc_repr.c
@@ -389,20 +389,6 @@ sfc_repr_check_conf(struct sfc_repr *sr, const struct rte_eth_conf *conf)
 		ret = -EINVAL;
 	}
 
-	switch (conf->rxmode.mq_mode) {
-	case RTE_ETH_MQ_RX_NONE:
-		break;
-	default:
-		sfcr_err(sr, "Rx mode MQ modes other than none not supported");
-		ret = -EINVAL;
-		break;
-	}
-
-	if (conf->txmode.mq_mode != RTE_ETH_MQ_TX_NONE) {
-		sfcr_err(sr, "Tx mode MQ modes not supported");
-		ret = -EINVAL;
-	}
-
 	if (conf->lpbk_mode != 0) {
 		sfcr_err(sr, "loopback not supported");
 		ret = -EINVAL;
diff --git a/drivers/net/sfc/sfc_rx.c b/drivers/net/sfc/sfc_rx.c
index aa59931f06..70ad3bf00c 100644
--- a/drivers/net/sfc/sfc_rx.c
+++ b/drivers/net/sfc/sfc_rx.c
@@ -1665,23 +1665,11 @@ sfc_rx_qinit_info(struct sfc_adapter *sa, sfc_sw_index_t sw_index,
 	return 0;
 }
 
-static int
+static void
 sfc_rx_check_mode(struct sfc_adapter *sa, struct rte_eth_rxmode *rxmode)
 {
 	uint64_t offloads_supported = sfc_rx_get_dev_offload_caps(sa) |
 				      sfc_rx_get_queue_offload_caps(sa);
-	int rc = 0;
-
-	switch (rxmode->mq_mode) {
-	case RTE_ETH_MQ_RX_NONE:
-	case RTE_ETH_MQ_RX_RSS:
-		/* No special checks are required */
-		break;
-	default:
-		sfc_err(sa, "Rx multi-queue mode %u not supported",
-			rxmode->mq_mode);
-		rc = EINVAL;
-	}
 
 	/*
 	 * Requested offloads are validated against supported by ethdev,
@@ -1699,8 +1687,6 @@ sfc_rx_check_mode(struct sfc_adapter *sa, struct rte_eth_rxmode *rxmode)
 		sfc_warn(sa, "Rx outer IPv4 checksum offload cannot be disabled - always on");
 		rxmode->offloads |= RTE_ETH_RX_OFFLOAD_OUTER_IPV4_CKSUM;
 	}
-
-	return rc;
 }
 
 /**
@@ -1759,9 +1745,7 @@ sfc_rx_configure(struct sfc_adapter *sa)
 	sfc_log_init(sa, "nb_rx_queues=%u (old %u)",
 		     nb_rx_queues, sas->ethdev_rxq_count);
 
-	rc = sfc_rx_check_mode(sa, &dev_conf->rxmode);
-	if (rc != 0)
-		goto fail_check_mode;
+	sfc_rx_check_mode(sa, &dev_conf->rxmode);
 
 	if (nb_rxq_total == sas->rxq_count) {
 		reconfigure = true;
@@ -1872,8 +1856,6 @@ sfc_rx_configure(struct sfc_adapter *sa)
 fail_rxqs_ctrl_alloc:
 fail_rxqs_alloc:
 	sfc_rx_close(sa);
-
-fail_check_mode:
 	sfc_log_init(sa, "failed %d", rc);
 	return rc;
 }
diff --git a/drivers/net/sfc/sfc_tx.c b/drivers/net/sfc/sfc_tx.c
index fac56cb27c..a860265c6a 100644
--- a/drivers/net/sfc/sfc_tx.c
+++ b/drivers/net/sfc/sfc_tx.c
@@ -314,15 +314,6 @@ sfc_tx_check_mode(struct sfc_adapter *sa, const struct rte_eth_txmode *txmode)
 	uint64_t dev_tx_offload_cap = sfc_tx_get_dev_offload_caps(sa);
 	int rc = 0;
 
-	switch (txmode->mq_mode) {
-	case RTE_ETH_MQ_TX_NONE:
-		break;
-	default:
-		sfc_err(sa, "Tx multi-queue mode %u not supported",
-			txmode->mq_mode);
-		rc = EINVAL;
-	}
-
 	if ((dev_tx_offload_cap & RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE) != 0 &&
 	    (txmode->offloads & RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE) == 0) {
 		sfc_err(sa, "There is no FAST_FREE flag in the attempted Tx mode configuration");
diff --git a/drivers/net/thunderx/nicvf_ethdev.c b/drivers/net/thunderx/nicvf_ethdev.c
index 30d03f4db9..2ed4390522 100644
--- a/drivers/net/thunderx/nicvf_ethdev.c
+++ b/drivers/net/thunderx/nicvf_ethdev.c
@@ -892,7 +892,7 @@ nicvf_configure_rss(struct rte_eth_dev *dev)
 {
 	struct nicvf *nic = nicvf_pmd_priv(dev);
 	uint64_t rsshf;
-	int ret = -EINVAL;
+	int ret;
 
 	rsshf = nicvf_rss_ethdev_to_nic(nic,
 			dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf);
@@ -901,10 +901,10 @@ nicvf_configure_rss(struct rte_eth_dev *dev)
 		    dev->data->nb_rx_queues,
 		    dev->data->dev_conf.lpbk_mode, rsshf);
 
-	if (dev->data->dev_conf.rxmode.mq_mode == RTE_ETH_MQ_RX_NONE)
-		ret = nicvf_rss_term(nic);
-	else if (dev->data->dev_conf.rxmode.mq_mode == RTE_ETH_MQ_RX_RSS)
+	if (dev->data->dev_conf.rxmode.mq_mode == RTE_ETH_MQ_RX_RSS)
 		ret = nicvf_rss_config(nic, dev->data->nb_rx_queues, rsshf);
+	else
+		ret = nicvf_rss_term(nic);
 	if (ret)
 		PMD_INIT_LOG(ERR, "Failed to configure RSS %d", ret);
 
@@ -1990,7 +1990,6 @@ nicvf_dev_configure(struct rte_eth_dev *dev)
 	struct rte_eth_dev_data *data = dev->data;
 	struct rte_eth_conf *conf = &data->dev_conf;
 	struct rte_eth_rxmode *rxmode = &conf->rxmode;
-	struct rte_eth_txmode *txmode = &conf->txmode;
 	struct nicvf *nic = nicvf_pmd_priv(dev);
 	uint8_t cqcount;
 
@@ -2004,17 +2003,6 @@ nicvf_dev_configure(struct rte_eth_dev *dev)
 		return -EINVAL;
 	}
 
-	if (txmode->mq_mode) {
-		PMD_INIT_LOG(INFO, "Tx mq_mode DCB or VMDq not supported");
-		return -EINVAL;
-	}
-
-	if (rxmode->mq_mode != RTE_ETH_MQ_RX_NONE &&
-		rxmode->mq_mode != RTE_ETH_MQ_RX_RSS) {
-		PMD_INIT_LOG(INFO, "Unsupported rx qmode %d", rxmode->mq_mode);
-		return -EINVAL;
-	}
-
 	if (conf->dcb_capability_en) {
 		PMD_INIT_LOG(INFO, "DCB enable not supported");
 		return -EINVAL;
diff --git a/drivers/net/virtio/virtio_ethdev.c b/drivers/net/virtio/virtio_ethdev.c
index a6fe4f3023..e6ad2de4ba 100644
--- a/drivers/net/virtio/virtio_ethdev.c
+++ b/drivers/net/virtio/virtio_ethdev.c
@@ -2241,20 +2241,6 @@ virtio_dev_configure(struct rte_eth_dev *dev)
 	PMD_INIT_LOG(DEBUG, "configure");
 	req_features = VIRTIO_PMD_DEFAULT_GUEST_FEATURES;
 
-	if (rxmode->mq_mode != RTE_ETH_MQ_RX_NONE && rxmode->mq_mode != RTE_ETH_MQ_RX_RSS) {
-		PMD_DRV_LOG(ERR,
-			"Unsupported Rx multi queue mode %d",
-			rxmode->mq_mode);
-		return -EINVAL;
-	}
-
-	if (txmode->mq_mode != RTE_ETH_MQ_TX_NONE) {
-		PMD_DRV_LOG(ERR,
-			"Unsupported Tx multi queue mode %d",
-			txmode->mq_mode);
-		return -EINVAL;
-	}
-
 	if (dev->data->dev_conf.intr_conf.rxq) {
 		ret = virtio_init_device(dev, hw->req_guest_features);
 		if (ret < 0)
diff --git a/drivers/net/zxdh/zxdh_ethdev.c b/drivers/net/zxdh/zxdh_ethdev.c
index 7c2f894642..f3efc927b2 100644
--- a/drivers/net/zxdh/zxdh_ethdev.c
+++ b/drivers/net/zxdh/zxdh_ethdev.c
@@ -1038,25 +1038,6 @@ zxdh_dev_configure(struct rte_eth_dev *dev)
 		return -EINVAL;
 	}
 
-	if (rxmode->mq_mode != RTE_ETH_MQ_RX_RSS && rxmode->mq_mode != RTE_ETH_MQ_RX_NONE) {
-		PMD_DRV_LOG(ERR, "Unsupported Rx multi queue mode %d", rxmode->mq_mode);
-		return -EINVAL;
-	}
-
-	if (txmode->mq_mode != RTE_ETH_MQ_TX_NONE) {
-		PMD_DRV_LOG(ERR, "Unsupported Tx multi queue mode %d", txmode->mq_mode);
-		return -EINVAL;
-	}
-	if (rxmode->mq_mode != RTE_ETH_MQ_RX_RSS && rxmode->mq_mode != RTE_ETH_MQ_RX_NONE) {
-		PMD_DRV_LOG(ERR, "Unsupported Rx multi queue mode %d", rxmode->mq_mode);
-		return -EINVAL;
-	}
-
-	if (txmode->mq_mode != RTE_ETH_MQ_TX_NONE) {
-		PMD_DRV_LOG(ERR, "Unsupported Tx multi queue mode %d", txmode->mq_mode);
-		return -EINVAL;
-	}
-
 	ret = zxdh_features_update(hw, rxmode, txmode);
 	if (ret < 0)
 		return ret;
diff --git a/lib/ethdev/rte_ethdev.c b/lib/ethdev/rte_ethdev.c
index 0988f69275..8f91a353d9 100644
--- a/lib/ethdev/rte_ethdev.c
+++ b/lib/ethdev/rte_ethdev.c
@@ -1526,6 +1526,23 @@ rte_eth_dev_configure(uint16_t port_id, uint16_t nb_rx_q, uint16_t nb_tx_q,
 		goto rollback;
 	}
 
+#define RX_MQ_MODE_KNOWN_FLAGS \
+	(RTE_ETH_MQ_RX_RSS_FLAG | RTE_ETH_MQ_RX_DCB_FLAG | RTE_ETH_MQ_RX_VMDQ_FLAG)
+
+	if ((dev_conf->rxmode.mq_mode & ~RX_MQ_MODE_KNOWN_FLAGS) != 0) {
+		RTE_ETHDEV_LOG_LINE(ERR, "Ethdev port_id=%u invalid rx mq_mode 0x%x",
+			port_id, dev_conf->rxmode.mq_mode);
+		ret = -EINVAL;
+		goto rollback;
+	}
+
+	if (dev_conf->txmode.mq_mode > RTE_ETH_MQ_TX_VMDQ_ONLY) {
+		RTE_ETHDEV_LOG_LINE(ERR, "Ethdev port_id=%u invalid tx mq_mode %u",
+			port_id, dev_conf->txmode.mq_mode);
+		ret = -EINVAL;
+		goto rollback;
+	}
+
 	if (dev_info.flow_type_rss_offloads == 0 &&
 			(dev_conf->rxmode.mq_mode & RTE_ETH_MQ_RX_RSS_FLAG) != 0) {
 		if (nb_rx_q > 1) {
-- 
2.54.0

Re: [PATCH v2 00/12] Validate multiqueue configuration in ethdev

[Stephen Hemminger]

On Wed, 21 Oct 2026 12:30:14 +0200
David Marchand <david.marchand@redhat.com> wrote:

> We have various checks in drivers about Rx and Tx multiqueue
> configuration.
> This series is a followup of the VMDq cleanup, finishing the job with
> DCB and RSS, and then rejecting invalid multiqueue configuration (useful
> from an ABI point of view).
> 
> Some drivers misreported their capabilities.
> It is important drivers maintainers review carefully those changes.


AI review 

Review: [PATCH v2 00/12] ethdev multi-queue mode validation

Applied cleanly on main (0e03411639). Every commit builds with
-Dwerror=true for all touched drivers except mvneta/mvpp2 (no musdk),
plus the touched apps and examples (ntb not buildable here).
check-doc-vs-code.sh full mode is clean at every commit.

v1 items addressed: ERE alternation (01/12), intel drivers covered
(03/12), igb/ipn3ke docs (08/12), RSS rejection limited to more than
one Rx queue with examples fixed (11/12), xsc hash types (10/12),
idpf/cpfl hash_key_size/reta_size (10/12), bnxt pool (04/12).

Remaining problem: incremental mode of the doc check is broken by
03/12.


Patch 03/12 devtools: handle multiple drivers in doc check

Error: the top-level doc_code_map loop assigns the global "drivers"
variable, which changed_net_drivers() uses as its cache:

	[ -n "$drivers" ] ||
		drivers=$(changed_files | ...)

After the loop "drivers" holds the last shared-directory list
(" txgbe"), so with a trusted commit only txgbe is ever checked.
Reproduced on top of 12/12 by adding "VMDq = Y" to mlx5.ini:

  devtools/check-doc-vs-code.sh HEAD~1   -> rc=0, nothing reported
  devtools/check-doc-vs-code.sh          -> VMDq documented but
                                            max_vmdq_pools not set
                                            for mlx5

Use names that do not collide with the script globals:

	for d in $rootdir/doc/guides/nics/features/*.ini; do
		name=$(basename "$d" .ini)
		dir=$(driver_code_dir $name)
		case $doc_code_map in
		*,$dir:*)
			before=${doc_code_map%,$dir:*}
			after=${doc_code_map#*,$dir:}
			list=${after%%,*}
			rest=${after#*,}
			doc_code_map="$before,$dir:$list $name,$rest" ;;
		*)
			doc_code_map="$doc_code_map$dir: $name," ;;
		esac
	done

With only "drivers" renamed, the mlx5 case is reported in incremental
mode as well.

Info: driver_code_dir() hardcodes the list of intel drivers. Testing
the directory picks up new ones without editing the script:

	*)
		if [ -d $rootdir/drivers/net/intel/$drv ]; then
			echo "$rootdir/drivers/net/intel/$drv"
		else
			echo "$rootdir/drivers/net/$drv"
		fi ;;


Patch 11/12 ethdev: check RSS availability

Warning: the commit message and release note say RSS mode is rejected
when flow_type_rss_offloads is 0. The code rejects it only with more
than one Rx queue; with one queue it logs a notice and clears
RTE_ETH_MQ_RX_RSS_FLAG in dev->data->dev_conf. Say so:

  * RSS mode (Rx ``RTE_ETH_MQ_RX_RSS_FLAG``) is rejected with more than
    one Rx queue if the driver reports no ``flow_type_rss_offloads``,
    and ignored with a single Rx queue.


Patches 05/12, 10/12

Info: Fixes: targets are in released versions and there is still no
Cc: stable@dpdk.org. If these are not meant for stable (the fm10k hunk
relies on the ethdev VMDq check), say so in the commit message.

[PATCH v3 00/13] Validate multiqueue configuration in ethdev

[David Marchand]

We have various checks in drivers about Rx and Tx multiqueue
configuration.
This series is a followup of the VMDq cleanup, finishing the job with
DCB and RSS, and then rejecting invalid multiqueue configuration (useful
from an ABI point of view).

Some drivers misreported their capabilities.
It is important drivers maintainers review carefully those changes.


-- 
David Marchand

Changes since v2:
- split script update in two,
- enhanced logic and added comments,
- fixed errors caught by Stephen,

Changes since v1:
- fixed handling of drivers/net/intel (and fixed related rte_flow
  issues),
- fixed handling of multiple drivers in one driver sources,
- finished bnxt cleanup,
- fixed various inconsistencies in drivers code and doc,
- updated all applications and examples and relaxed check on RSS
  (now allowed with nb_rxq == 1 for drivers that have no RSS support),


David Marchand (13):
  devtools: fix matching in doc check
  doc: fix L2TPv2 and PPP matching support for ICE
  devtools: support Intel drivers in doc check
  devtools: handle multiple drivers in doc check
  net/bnxt: remove leftover VMDq code in MAC helpers
  drivers/net: fix reported VMDq capability
  drivers/net: remove check on VMDq modes
  devtools: check VMDq capability
  doc: fix DCB capability for some Intel drivers
  ethdev: check DCB availability
  drivers/net: fix reported RSS capability
  ethdev: check RSS availability
  ethdev: check unknown Rx/Tx multi-queue modes

 MAINTAINERS                                   |   2 +-
 app/graph/ethdev.c                            |   7 +-
 app/test-eventdev/test_perf_common.c          |   2 +
 app/test-eventdev/test_pipeline_common.c      |   2 +
 devtools/check-doc-vs-code.sh                 | 165 +++++++++++++++++-
 .../features/{afpacket.ini => af_packet.ini}  |   2 +-
 .../features/{cxgbevf.ini => cxgbe_vf.ini}    |   2 +-
 doc/guides/nics/features/failsafe.ini         |   2 +
 doc/guides/nics/features/ice.ini              |   2 +
 doc/guides/nics/features/igb.ini              |   1 -
 doc/guides/nics/features/ipn3ke.ini           |   5 -
 doc/guides/nics/features/nbl.ini              |   1 +
 doc/guides/nics/features/netvsc.ini           |   1 +
 doc/guides/rel_notes/release_26_11.rst        |  14 +-
 drivers/net/atlantic/atl_ethdev.c             |   2 -
 drivers/net/axgbe/axgbe_ethdev.c              |  21 +--
 drivers/net/bnxt/bnxt_ethdev.c                |  90 +++-------
 drivers/net/bnxt/bnxt_rxq.c                   |  14 +-
 drivers/net/cnxk/cnxk_ethdev.c                |  11 --
 drivers/net/cnxk/cnxk_rep_ops.c               |  33 +---
 drivers/net/cxgbe/cxgbe_ethdev.c              |   1 -
 drivers/net/dpaa/dpaa_ethdev.c                |   1 -
 drivers/net/dpaa2/dpaa2_ethdev.c              |   1 -
 drivers/net/hns3/hns3_dcb.c                   |   9 -
 drivers/net/intel/cpfl/cpfl_ethdev.c          |  25 +--
 drivers/net/intel/cpfl/cpfl_representor.c     |   4 +-
 drivers/net/intel/e1000/igb_ethdev.c          |  21 +--
 drivers/net/intel/e1000/igb_rxtx.c            |  39 -----
 drivers/net/intel/e1000/igc_ethdev.c          |  19 --
 drivers/net/intel/e1000/igc_txrx.c            |  19 +-
 drivers/net/intel/fm10k/fm10k_ethdev.c        |  14 +-
 drivers/net/intel/i40e/i40e_ethdev.c          |   5 -
 drivers/net/intel/idpf/idpf_ethdev.c          |  15 +-
 drivers/net/intel/ixgbe/ixgbe_ethdev.c        |   4 -
 drivers/net/mvneta/mvneta_ethdev.c            |   7 -
 drivers/net/mvpp2/mrvl_ethdev.c               |   7 -
 drivers/net/nbl/nbl_dev/nbl_dev.c             |   6 -
 drivers/net/nfp/nfp_net_common.c              |  15 --
 drivers/net/ngbe/ngbe_ethdev_vf.c             |   1 -
 drivers/net/octeontx/octeontx_ethdev.c        |  11 --
 drivers/net/qede/qede_ethdev.c                |   5 -
 drivers/net/sfc/sfc_repr.c                    |  41 +----
 drivers/net/sfc/sfc_rx.c                      |  29 +--
 drivers/net/sfc/sfc_tx.c                      |   9 -
 drivers/net/thunderx/nicvf_ethdev.c           |  20 +--
 drivers/net/txgbe/txgbe_ethdev_vf.c           |   1 -
 drivers/net/virtio/virtio_ethdev.c            |  14 --
 drivers/net/xsc/xsc_ethdev.c                  |   4 +
 drivers/net/zxdh/zxdh_ethdev.c                |  19 --
 examples/distributor/main.c                   |   2 +
 examples/dma/dmafwd.c                         |   2 +
 .../pipeline_worker_generic.c                 |   2 +
 .../eventdev_pipeline/pipeline_worker_tx.c    |   2 +
 examples/ip_reassembly/main.c                 |   2 +
 examples/ipsec-secgw/ipsec-secgw.c            |   2 +
 examples/l2fwd-event/l2fwd_common.c           |   2 +
 examples/l3fwd-graph/main.c                   |   2 +
 examples/l3fwd/main.c                         |   3 +-
 .../client_server_mp/mp_server/init.c         |  10 +-
 examples/multi_process/symmetric_mp/main.c    |   2 +
 examples/ntb/ntb_fwd.c                        |   2 +
 examples/pipeline/obj.c                       |   7 +-
 examples/qos_meter/main.c                     |   4 +
 examples/server_node_efd/efd_server/init.c    |   3 +
 lib/ethdev/rte_ethdev.c                       |  46 +++++
 65 files changed, 336 insertions(+), 502 deletions(-)
 rename doc/guides/nics/features/{afpacket.ini => af_packet.ini} (70%)
 rename doc/guides/nics/features/{cxgbevf.ini => cxgbe_vf.ini} (90%)

-- 
2.54.0

[PATCH v3 01/13] devtools: fix matching in doc check

[David Marchand]

The current user (rte_flow) of has_code_change pass what looks like
a regular expression, while -S matches exact strings.

Use -G.

Fixes: 947dff12bcf5 ("devtools: check flow API doc tables")
Cc: stable@dpdk.org

Signed-off-by: David Marchand <david.marchand@redhat.com>
Acked-by: Thomas Monjalon <thomas@monjalon.net>
---
 devtools/check-doc-vs-code.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/devtools/check-doc-vs-code.sh b/devtools/check-doc-vs-code.sh
index c58c239c87..80d77907f0 100755
--- a/devtools/check-doc-vs-code.sh
+++ b/devtools/check-doc-vs-code.sh
@@ -28,7 +28,7 @@ changed_files()
 
 has_code_change() # <pattern>
 {
-	test -n "$(git log --format='%h' -S"$1" $trusted_commit..)"
+	test -n "$(git log --format='%h' -G"$1" $trusted_commit..)"
 }
 
 has_file_change() # <pattern>
-- 
2.54.0

[PATCH v3 02/13] doc: fix L2TPv2 and PPP matching support for ICE

[David Marchand]

Those features were missed when adding the code.

Fixes: 733640dae75e ("net/ice: support L2TPv2 flow pattern matching")
Cc: stable@dpdk.org

Signed-off-by: David Marchand <david.marchand@redhat.com>
---
 doc/guides/nics/features/ice.ini | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/doc/guides/nics/features/ice.ini b/doc/guides/nics/features/ice.ini
index 22f98c8de2..68c7f48ff0 100644
--- a/doc/guides/nics/features/ice.ini
+++ b/doc/guides/nics/features/ice.ini
@@ -67,9 +67,11 @@ icmp6                = Y
 ipv4                 = Y
 ipv6                 = Y
 ipv6_frag_ext        = Y
+l2tpv2               = Y
 l2tpv3oip            = Y
 nvgre                = Y
 pfcp                 = Y
+ppp                  = Y
 pppoed               = Y
 pppoes               = Y
 pppoe_proto_id       = Y
-- 
2.54.0

[PATCH v3 03/13] devtools: support Intel drivers in doc check

[David Marchand]

Intel network drivers are located in a subdirectory
(drivers/net/intel/) rather than directly in drivers/net/.

Update all_net_drivers() to find drivers based on meson.build
presence, which handles both locations.

Add driver_code_dir() helper to map driver names to their actual
code directory.

Update changed_net_drivers() to extract driver names from Intel
subdirectory paths.

Signed-off-by: David Marchand <david.marchand@redhat.com>
---
Changes since v2:
- split changes out of original patch 3, now only dealing with Intel sub
  directory case,

---
 devtools/check-doc-vs-code.sh | 26 ++++++++++++++++++++------
 1 file changed, 20 insertions(+), 6 deletions(-)

diff --git a/devtools/check-doc-vs-code.sh b/devtools/check-doc-vs-code.sh
index 80d77907f0..e141fe9938 100755
--- a/devtools/check-doc-vs-code.sh
+++ b/devtools/check-doc-vs-code.sh
@@ -38,24 +38,38 @@ has_file_change() # <pattern>
 
 changed_net_drivers()
 {
-	net_paths='drivers/net/|doc/guides/nics/features/'
 	[ -n "$drivers" ] ||
 		drivers=$(changed_files |
-			sed -rn "s,^($net_paths)([^./]*).*,\2,p" |
+			sed -rn '
+				s,^drivers/net/intel/([^/]*).*,\1,p; t
+				s,^drivers/net/([^/]*).*,\1,p; t
+				s,^doc/guides/nics/features/([^.]*).*,\1,p' |
 			sort -u)
 	echo "$drivers"
 }
 
 all_net_drivers()
 {
-	find $rootdir/drivers/net -mindepth 1 -maxdepth 1 -type d |
-	sed 's,.*/,,' |
-	sort
+	find $rootdir/drivers/net -name meson.build |
+	sed -rn '
+		s,.*drivers/net/intel/([^/]*).*,\1,p; t
+		s,.*drivers/net/([^/]*).*,\1,p' |
+	sort -u
+}
+
+# give back a driver directory for a doc/driver name
+driver_code_dir() # <driver_name>
+{
+	if [ -d $rootdir/drivers/net/intel/$1 ]; then
+		echo "$rootdir/drivers/net/intel/$1"
+	else
+		echo "$rootdir/drivers/net/$1"
+	fi
 }
 
 check_rte_flow() # <driver>
 {
-	code=$rootdir/drivers/net/$1
+	code=$(driver_code_dir $1)
 	doc=$rootdir/doc/guides/nics/features/$1.ini
 	[ -d $code ] || return 0
 	[ -f $doc ] || return 0
-- 
2.54.0

Re: [PATCH v3 03/13] devtools: support Intel drivers in doc check

[Thomas Monjalon]

22/10/2026 19:44, David Marchand:
> Intel network drivers are located in a subdirectory
> (drivers/net/intel/) rather than directly in drivers/net/.
> 
> Update all_net_drivers() to find drivers based on meson.build
> presence, which handles both locations.
> 
> Add driver_code_dir() helper to map driver names to their actual
> code directory.
> 
> Update changed_net_drivers() to extract driver names from Intel
> subdirectory paths.
> 
> Signed-off-by: David Marchand <david.marchand@redhat.com>
> ---
> Changes since v2:
> - split changes out of original patch 3, now only dealing with Intel sub
>   directory case,

Acked-by: Thomas Monjalon <thomas@monjalon.net>

[PATCH v3 04/13] devtools: handle multiple drivers in doc check

[David Marchand]

Some drivers have multiple doc files sharing one code directory
(e.g., igb, igc, e1000 variants). Others have doc files for VF/DCF
variants (e.g., ice_dcf, ixgbe_vf).

Extend driver_code_dir() to strip variant suffixes and map driver
names to their shared code directories.

Build a cache mapping each code directory to its associated doc
files. Add docs_for_code() to retrieve all doc names for a given
code directory.

Add items_not_in() to compute set difference between two lists.
Use it in check_rte_flow() to compare doc vs code items:
- items documented but not in code are always reported,
- items in code but not documented in any doc for the code
  directory are reported, avoiding false positives when multiple
  docs share the same code.

Also rename doc files to match their code directory names.

Signed-off-by: David Marchand <david.marchand@redhat.com>
---
Changes since v2:
- introduced logic earlier in the series,
- added comments and implemented for rte_flow checks,

---
 MAINTAINERS                                   |   2 +-
 devtools/check-doc-vs-code.sh                 | 109 +++++++++++++++---
 .../features/{afpacket.ini => af_packet.ini}  |   2 +-
 .../features/{cxgbevf.ini => cxgbe_vf.ini}    |   2 +-
 4 files changed, 98 insertions(+), 17 deletions(-)
 rename doc/guides/nics/features/{afpacket.ini => af_packet.ini} (70%)
 rename doc/guides/nics/features/{cxgbevf.ini => cxgbe_vf.ini} (90%)

diff --git a/MAINTAINERS b/MAINTAINERS
index 1720cff62e..e05bea2f0c 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -679,7 +679,7 @@ F: examples/bond/
 Linux AF_PACKET
 M: Stephen Hemminger <stephen@networkplumber.org>
 F: drivers/net/af_packet/
-F: doc/guides/nics/features/afpacket.ini
+F: doc/guides/nics/features/af_packet.ini
 F: app/test/test_pmd_af_packet.c
 
 Linux AF_XDP
diff --git a/devtools/check-doc-vs-code.sh b/devtools/check-doc-vs-code.sh
index e141fe9938..7afc18d153 100755
--- a/devtools/check-doc-vs-code.sh
+++ b/devtools/check-doc-vs-code.sh
@@ -36,35 +36,86 @@ has_file_change() # <pattern>
 	changed_files | grep -q "$1"
 }
 
+net_driver_from_path() # <path>
+{
+	sed -rn '
+		s,.*drivers/net/intel/([^/]*)/.*,\1,p; t
+		s,.*drivers/net/([^./]*)/.*,\1,p; t
+		s,.*doc/guides/nics/features/([^./]*).*,\1,p' |
+	grep -v '^default$'
+}
+
 changed_net_drivers()
 {
 	[ -n "$drivers" ] ||
 		drivers=$(changed_files |
-			sed -rn '
-				s,^drivers/net/intel/([^/]*).*,\1,p; t
-				s,^drivers/net/([^/]*).*,\1,p; t
-				s,^doc/guides/nics/features/([^.]*).*,\1,p' |
+			net_driver_from_path |
 			sort -u)
 	echo "$drivers"
 }
 
 all_net_drivers()
 {
-	find $rootdir/drivers/net -name meson.build |
-	sed -rn '
-		s,.*drivers/net/intel/([^/]*).*,\1,p; t
-		s,.*drivers/net/([^/]*).*,\1,p' |
+	{
+		find $rootdir/drivers/net -name meson.build
+		ls $rootdir/doc/guides/nics/features/*.ini
+	} |
+	net_driver_from_path |
 	sort -u
 }
 
 # give back a driver directory for a doc/driver name
 driver_code_dir() # <driver_name>
 {
-	if [ -d $rootdir/drivers/net/intel/$1 ]; then
-		echo "$rootdir/drivers/net/intel/$1"
-	else
-		echo "$rootdir/drivers/net/$1"
-	fi
+	drv=$(echo "$1" | sed -r 's/_(dcf|vec|vf)$//')
+	case $drv in
+	enetc|enetc4)
+		echo "$rootdir/drivers/net/enetc" ;;
+	igb|igc|e1000)
+		echo "$rootdir/drivers/net/intel/e1000" ;;
+	*)
+		if [ -d $rootdir/drivers/net/intel/$drv ]; then
+			echo "$rootdir/drivers/net/intel/$drv"
+		else
+			echo "$rootdir/drivers/net/$drv"
+		fi ;;
+	esac
+}
+
+# create a cache of the mapping between a driver code directory and associated driver docs
+# format of this cache is:
+# ^,$drv1_directory: $drv1_doc_name1 $drv1_doc_name2,$drv2_directory: $drv2_doc_name1,...,$
+doc_code_map=","
+for d in $rootdir/doc/guides/nics/features/*.ini; do
+	drv=$(basename "$d" .ini)
+	[ "$drv" != 'default' ] || continue
+	code=$(driver_code_dir $drv)
+	case $doc_code_map in
+	*,$code:*)
+		before=${doc_code_map%,$code:*}
+		after=${doc_code_map#*,$code:}
+		drvs=${after%%,*}
+		rest=${after#*,}
+		doc_code_map="$before,$code:$drvs $drv,$rest" ;;
+	*)
+		doc_code_map="$doc_code_map$code: $drv," ;;
+	esac
+done
+
+# extract all doc names from the cache created above
+docs_for_code() # <code_dir>
+{
+	tmp=${doc_code_map#*,$1:}
+	echo ${tmp%%,*}
+}
+
+# output items from first list that are not in second list
+items_not_in() # <list1> <list2>
+{
+	{
+		[ -n "$1" ] && echo "$1"
+		[ -n "$2" ] && { echo "$2"; echo "$2"; }
+	} | sort | uniq -u
 }
 
 check_rte_flow() # <driver>
@@ -73,7 +124,37 @@ check_rte_flow() # <driver>
 	doc=$rootdir/doc/guides/nics/features/$1.ini
 	[ -d $code ] || return 0
 	[ -f $doc ] || return 0
-	report=$($selfdir/parse-flow-support.sh $code $doc)
+	code_support=$($selfdir/parse-flow-support.sh $code)
+	report=$(
+		for category in item action; do
+			section="rte_flow ${category}s]"
+			code_items=$(echo "$code_support" | sed -n "/$section/,/]/p" |
+				sed '/]/d' |        # ignore section title
+				sed 's, *=.*,,' |   # keep only item name
+				sed '/^$/d' |       # remove empty lines
+				sort -u)
+			doc_items=$(sed -n "/$section/,/]/p" "$doc" |
+				sed '/]/d' |        # ignore section title
+				sed 's, *=.*,,' |   # keep only item name
+				sed '/^$/d' |       # remove empty lines
+				sort -u)
+			{
+				# items documented but not in code
+				items_not_in "$doc_items" "$code_items"
+				# items in code but not documented in any doc for the code directory
+				all_doc_items=$(
+					for drv in $(docs_for_code $code); do
+						d=$rootdir/doc/guides/nics/features/$drv.ini
+						sed -n "/$section/,/]/p" "$d" |
+							sed '/]/d' |        # ignore section title
+							sed 's, *=.*,,' |   # keep only item name
+							sed '/^$/d'         # remove empty lines
+					done | sort -u
+				)
+				items_not_in "$code_items" "$all_doc_items"
+			} | sed "s,^,$category ,"   # prefix with category name
+		done
+	)
 	if [ -n "$report" ]; then
 		error "rte_flow doc out of sync for $1"
 		echo "$report" | sed 's,^,\t,'
diff --git a/doc/guides/nics/features/afpacket.ini b/doc/guides/nics/features/af_packet.ini
similarity index 70%
rename from doc/guides/nics/features/afpacket.ini
rename to doc/guides/nics/features/af_packet.ini
index bc669dfb8a..b1cbc54aca 100644
--- a/doc/guides/nics/features/afpacket.ini
+++ b/doc/guides/nics/features/af_packet.ini
@@ -1,5 +1,5 @@
 ;
-; Supported features of the 'afpacket' network poll mode driver.
+; Supported features of the 'af_packet' network poll mode driver.
 ;
 ; Refer to default.ini for the full list of available PMD features.
 ;
diff --git a/doc/guides/nics/features/cxgbevf.ini b/doc/guides/nics/features/cxgbe_vf.ini
similarity index 90%
rename from doc/guides/nics/features/cxgbevf.ini
rename to doc/guides/nics/features/cxgbe_vf.ini
index a921cda6b1..b77b202272 100644
--- a/doc/guides/nics/features/cxgbevf.ini
+++ b/doc/guides/nics/features/cxgbe_vf.ini
@@ -1,5 +1,5 @@
 ;
-; Supported features of the 'cxgbevf' network poll mode driver.
+; Supported features of the 'cxgbe_vf' network poll mode driver.
 ;
 ; Refer to default.ini for the full list of available PMD features.
 ;
-- 
2.54.0

Re: [PATCH v3 04/13] devtools: handle multiple drivers in doc check

[Thomas Monjalon]

22/10/2026 19:44, David Marchand:
> -	report=$($selfdir/parse-flow-support.sh $code $doc)
> +	code_support=$($selfdir/parse-flow-support.sh $code)
> +	report=$(
> +		for category in item action; do
> +			section="rte_flow ${category}s]"
> +			code_items=$(echo "$code_support" | sed -n "/$section/,/]/p" |
> +				sed '/]/d' |        # ignore section title
> +				sed 's, *=.*,,' |   # keep only item name
> +				sed '/^$/d' |       # remove empty lines
> +				sort -u)

This parsing is used below.
This is an opportunity for a function.

> +			doc_items=$(sed -n "/$section/,/]/p" "$doc" |
> +				sed '/]/d' |        # ignore section title
> +				sed 's, *=.*,,' |   # keep only item name
> +				sed '/^$/d' |       # remove empty lines
> +				sort -u)
> +			{
> +				# items documented but not in code
> +				items_not_in "$doc_items" "$code_items"
> +				# items in code but not documented in any doc for the code directory
> +				all_doc_items=$(
> +					for drv in $(docs_for_code $code); do
> +						d=$rootdir/doc/guides/nics/features/$drv.ini
> +						sed -n "/$section/,/]/p" "$d" |
> +							sed '/]/d' |        # ignore section title
> +							sed 's, *=.*,,' |   # keep only item name
> +							sed '/^$/d'         # remove empty lines
> +					done | sort -u
> +				)
> +				items_not_in "$code_items" "$all_doc_items"
> +			} | sed "s,^,$category ,"   # prefix with category name
> +		done
> +	)

Re: [PATCH v3 04/13] devtools: handle multiple drivers in doc check

[David Marchand]

On Fri, 23 Oct 2026 at 12:13, Thomas Monjalon <thomas@monjalon.net> wrote:
>
> 22/10/2026 19:44, David Marchand:
> > -     report=$($selfdir/parse-flow-support.sh $code $doc)
> > +     code_support=$($selfdir/parse-flow-support.sh $code)
> > +     report=$(
> > +             for category in item action; do
> > +                     section="rte_flow ${category}s]"
> > +                     code_items=$(echo "$code_support" | sed -n "/$section/,/]/p" |
> > +                             sed '/]/d' |        # ignore section title
> > +                             sed 's, *=.*,,' |   # keep only item name
> > +                             sed '/^$/d' |       # remove empty lines
> > +                             sort -u)
>
> This parsing is used below.
> This is an opportunity for a function.

I prepared this:

diff --git a/devtools/check-doc-vs-code.sh b/devtools/check-doc-vs-code.sh
index 4c45bc0bba..9fc14dd19e 100755
--- a/devtools/check-doc-vs-code.sh
+++ b/devtools/check-doc-vs-code.sh
@@ -118,6 +118,14 @@ items_not_in() # <list1> <list2>
        } | sort | uniq -u
 }

+parse_rte_flow_section() # <section>
+{
+       sed -n "/$1/,/]/p" |
+       sed '/]/d' |        # ignore section title
+       sed 's, *=.*,,' |   # keep only item name
+       sed '/^$/d'         # remove empty lines
+}
+
 check_rte_flow() # <driver>
 {
        code=$(driver_code_dir $1)
@@ -128,15 +136,10 @@ check_rte_flow() # <driver>
        report=$(
                for category in item action; do
                        section="rte_flow ${category}s]"
-                       code_items=$(echo "$code_support" | sed -n
"/$section/,/]/p" |
-                               sed '/]/d' |        # ignore section title
-                               sed 's, *=.*,,' |   # keep only item name
-                               sed '/^$/d' |       # remove empty lines
+                       code_items=$(echo "$code_support" |
+                               parse_rte_flow_section "$section" |
                                sort -u)
-                       doc_items=$(sed -n "/$section/,/]/p" "$doc" |
-                               sed '/]/d' |        # ignore section title
-                               sed 's, *=.*,,' |   # keep only item name
-                               sed '/^$/d' |       # remove empty lines
+                       doc_items=$(parse_rte_flow_section "$section" < $doc |
                                sort -u)
                        {
                                # items documented but not in code
@@ -145,10 +148,7 @@ check_rte_flow() # <driver>
                                all_doc_items=$(
                                        for drv in $(docs_for_code $code); do

d=$rootdir/doc/guides/nics/features/$drv.ini
-                                               sed -n "/$section/,/]/p" "$d" |
-                                                       sed '/]/d' |
     # ignore section title
-                                                       sed 's,
*=.*,,' |   # keep only item name
-                                                       sed '/^$/d'
     # remove empty lines
+                                               parse_rte_flow_section
"$section" < $d
                                        done | sort -u
                                )
                                items_not_in "$code_items" "$all_doc_items"


I'll wait a bit for more reviews on the rest of the series.


-- 
David Marchand

[PATCH v3 05/13] net/bnxt: remove leftover VMDq code in MAC helpers

[David Marchand]

The VMDq support removal left dead code in MAC address addition, removal
and filter restore functions.
Remove the VMDq flag checks and pool_mask logic that are no longer needed.

At the same time, remove unneeded reset to 0 of VMDq related field in
the dev_info structure.

Fixes: 582f971526da ("net/bnxt: remove VMDq support")

Signed-off-by: David Marchand <david.marchand@redhat.com>
---
Changes since v1:
- cleaned up bnxt_mac_addr_add_op,
- preferred bnxt_get_default_vnic() to direct access to bp->vnic_info[0],

---
 drivers/net/bnxt/bnxt_ethdev.c | 90 +++++++++-------------------------
 1 file changed, 22 insertions(+), 68 deletions(-)

diff --git a/drivers/net/bnxt/bnxt_ethdev.c b/drivers/net/bnxt/bnxt_ethdev.c
index 23edd94444..4a4e9c1ea3 100644
--- a/drivers/net/bnxt/bnxt_ethdev.c
+++ b/drivers/net/bnxt/bnxt_ethdev.c
@@ -1252,12 +1252,6 @@ static int bnxt_dev_info_get_op(struct rte_eth_dev *eth_dev,
 	 * TODO: default_rxconf, default_txconf, rx_desc_lim, and tx_desc_lim
 	 *       need further investigation.
 	 */
-	dev_info->max_vmdq_pools = 0;
-	dev_info->vmdq_queue_num = 0;
-
-	dev_info->vmdq_pool_base = 0;
-	dev_info->vmdq_queue_base = 0;
-
 	dev_info->rx_seg_capa.max_nseg = BNXT_MAX_BUFFER_SPLIT_SEGS;
 	dev_info->rx_seg_capa.multi_pools = BNXT_MULTI_POOL_BUF_SPLIT_CAP;
 	dev_info->rx_seg_capa.offset_allowed = BNXT_BUF_SPLIT_OFFSET_CAP;
@@ -1999,45 +1993,32 @@ static void bnxt_mac_addr_remove_op(struct rte_eth_dev *eth_dev,
 				    uint32_t index)
 {
 	struct bnxt *bp = eth_dev->data->dev_private;
-	uint64_t pool_mask;
 	struct bnxt_vnic_info *vnic;
 	struct bnxt_filter_info *filter, *temp_filter;
-	uint32_t i;
 
 	if (is_bnxt_in_error(bp))
 		return;
 
-	if ((eth_dev->data->dev_conf.rxmode.mq_mode & RTE_ETH_MQ_RX_VMDQ_FLAG) == 0)
-		pool_mask = 1;
-	else
-		pool_mask = eth_dev->data->mac_pool_sel[index];
+	if (bp->vnic_info == NULL)
+		return;
 
-	/*
-	 * Loop through all VNICs from the specified filter flow pools to
-	 * remove the corresponding MAC addr filter
-	 */
-	for (i = 0; i < bp->nr_vnics; i++) {
-		if (!(pool_mask & (1ULL << i)))
-			continue;
+	vnic = bnxt_get_default_vnic(bp);
 
-		vnic = &bp->vnic_info[i];
-		filter = STAILQ_FIRST(&vnic->filter);
-		while (filter) {
-			temp_filter = STAILQ_NEXT(filter, next);
-			if (filter->mac_index == index) {
-				STAILQ_REMOVE(&vnic->filter, filter,
-						bnxt_filter_info, next);
-				bnxt_hwrm_clear_l2_filter(bp, filter);
-				bnxt_free_filter(bp, filter);
-			}
-			filter = temp_filter;
+	filter = STAILQ_FIRST(&vnic->filter);
+	while (filter) {
+		temp_filter = STAILQ_NEXT(filter, next);
+		if (filter->mac_index == index) {
+			STAILQ_REMOVE(&vnic->filter, filter,
+					bnxt_filter_info, next);
+			bnxt_hwrm_clear_l2_filter(bp, filter);
+			bnxt_free_filter(bp, filter);
 		}
+		filter = temp_filter;
 	}
 }
 
 static int bnxt_add_mac_filter(struct bnxt *bp, struct bnxt_vnic_info *vnic,
-			       struct rte_ether_addr *mac_addr, uint32_t index,
-			       uint32_t pool)
+			       struct rte_ether_addr *mac_addr, uint32_t index)
 {
 	struct bnxt_filter_info *filter;
 	int rc = 0;
@@ -2045,9 +2026,7 @@ static int bnxt_add_mac_filter(struct bnxt *bp, struct bnxt_vnic_info *vnic,
 	/* Attach requested MAC address to the new l2_filter */
 	STAILQ_FOREACH(filter, &vnic->filter, next) {
 		if (filter->mac_index == index) {
-			PMD_DRV_LOG_LINE(DEBUG,
-				    "MAC addr already existed for pool %d",
-				    pool);
+			PMD_DRV_LOG_LINE(DEBUG, "MAC addr already exists");
 			return 0;
 		}
 	}
@@ -2082,10 +2061,9 @@ static int bnxt_add_mac_filter(struct bnxt *bp, struct bnxt_vnic_info *vnic,
 
 static int bnxt_mac_addr_add_op(struct rte_eth_dev *eth_dev,
 				struct rte_ether_addr *mac_addr,
-				uint32_t index, uint32_t pool)
+				uint32_t index, uint32_t pool __rte_unused)
 {
 	struct bnxt *bp = eth_dev->data->dev_private;
-	struct bnxt_vnic_info *vnic;
 	int rc = 0;
 
 	rc = is_bnxt_in_error(bp);
@@ -2097,11 +2075,6 @@ static int bnxt_mac_addr_add_op(struct rte_eth_dev *eth_dev,
 		return -ENOTSUP;
 	}
 
-	if (pool >= bp->max_vnics) {
-		PMD_DRV_LOG_LINE(ERR, "Pool %u exceeds VNIC count %u!", pool, bp->max_vnics);
-		return -EINVAL;
-	}
-
 	/* Filter settings will get applied when port is started */
 	if (!eth_dev->data->dev_started)
 		return 0;
@@ -2109,9 +2082,7 @@ static int bnxt_mac_addr_add_op(struct rte_eth_dev *eth_dev,
 	if (bp->vnic_info == NULL)
 		return 0;
 
-	vnic = &bp->vnic_info[pool];
-
-	rc = bnxt_add_mac_filter(bp, vnic, mac_addr, index, pool);
+	rc = bnxt_add_mac_filter(bp, bnxt_get_default_vnic(bp), mac_addr, index);
 
 	return rc;
 }
@@ -2953,7 +2924,7 @@ bnxt_config_vlan_hw_filter(struct bnxt *bp, uint64_t rx_offloads)
 		for (i = 0; i < RTE_ETHER_MAX_VLAN_ID; i++)
 			bnxt_del_vlan_filter(bp, i);
 
-		rc = bnxt_add_mac_filter(bp, vnic, NULL, 0, 0);
+		rc = bnxt_add_mac_filter(bp, vnic, NULL, 0);
 		if (rc)
 			return rc;
 	} else {
@@ -3030,7 +3001,7 @@ bnxt_config_vlan_hw_stripping(struct bnxt *bp, uint64_t rx_offloads)
 		if (rc)
 			return rc;
 	} else {
-		rc = bnxt_add_mac_filter(bp, vnic, NULL, 0, 0);
+		rc = bnxt_add_mac_filter(bp, vnic, NULL, 0);
 		if (rc)
 			return rc;
 	}
@@ -3181,7 +3152,7 @@ bnxt_set_default_mac_addr_op(struct rte_eth_dev *dev,
 		/* This filter will allow only untagged packets */
 		rc = bnxt_add_vlan_filter(bp, 0);
 	} else {
-		rc = bnxt_add_mac_filter(bp, vnic, addr, 0, 0);
+		rc = bnxt_add_mac_filter(bp, vnic, addr, 0);
 	}
 
 	PMD_DRV_LOG_LINE(DEBUG, "Set MAC addr");
@@ -4528,10 +4499,7 @@ static int bnxt_restore_mac_filters(struct bnxt *bp)
 	struct rte_eth_dev *dev = bp->eth_dev;
 	struct rte_eth_dev_info dev_info;
 	struct rte_ether_addr *addr;
-	uint64_t pool_mask;
-	uint32_t pool = 0;
 	uint32_t i;
-	bool vmdq;
 	int rc;
 
 	if (BNXT_VF(bp) && !BNXT_VF_IS_TRUSTED(bp))
@@ -4541,8 +4509,6 @@ static int bnxt_restore_mac_filters(struct bnxt *bp)
 	if (rc)
 		return rc;
 
-	vmdq = (dev->data->dev_conf.rxmode.mq_mode & RTE_ETH_MQ_RX_VMDQ_FLAG) != 0;
-
 	/* replay MAC address configuration */
 	for (i = 1; i < dev_info.max_mac_addrs; i++) {
 		addr = &dev->data->mac_addrs[i];
@@ -4551,21 +4517,9 @@ static int bnxt_restore_mac_filters(struct bnxt *bp)
 		if (rte_is_zero_ether_addr(addr))
 			continue;
 
-		pool = 0;
-		if (!vmdq)
-			pool_mask = 1;
-		else
-			pool_mask = dev->data->mac_pool_sel[i];
-
-		do {
-			if (pool_mask & 1ULL) {
-				rc = bnxt_mac_addr_add_op(dev, addr, i, pool);
-				if (rc)
-					return rc;
-			}
-			pool_mask >>= 1;
-			pool++;
-		} while (pool_mask);
+		rc = bnxt_mac_addr_add_op(dev, addr, i, 0);
+		if (rc)
+			return rc;
 	}
 
 	return 0;
-- 
2.54.0

[PATCH v3 06/13] drivers/net: fix reported VMDq capability

[David Marchand]

Some PF drivers (dpaa, dpaa2) and VF drivers (ixgbe, ngbe, txgbe)
are announcing some VMDq capability though this support is not documented,
and no action is taken if the feature is requested.

fm10k announces capability for VF device, but rejects it at configure
time.

failsafe may support VMDq, as it only passes the requests to the ports
attached to it, hence mark it as partial support.

Fixes: fe3a45fd4104 ("ixgbe: add VMDq support")
Fixes: 7e72cbfa320b ("fm10k: add reta query/update")
Fixes: 799db4568c76 ("net/dpaa: support device info and speed capability")
Fixes: 762b275f20f8 ("net/dpaa2: add missing device info fields")
Fixes: c01c748e4ae6 ("net/ipn3ke: add new driver")
Fixes: 5dec0169554b ("net/txgbe: support VF get information")
Fixes: 66070ca419c1 ("net/ngbe: add hardware configuration for VF device")
Cc: stable@dpdk.org

Signed-off-by: David Marchand <david.marchand@redhat.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
---
Changes since v1:
- moved net/atlantic and net/cxgbe changes where needed (later in this
  series),
- added comment on failsafe in commitlog,
- fixed ipn3ke,

---
 doc/guides/nics/features/failsafe.ini  | 1 +
 doc/guides/nics/features/ipn3ke.ini    | 1 -
 drivers/net/dpaa/dpaa_ethdev.c         | 1 -
 drivers/net/dpaa2/dpaa2_ethdev.c       | 1 -
 drivers/net/intel/fm10k/fm10k_ethdev.c | 9 ++-------
 drivers/net/intel/ixgbe/ixgbe_ethdev.c | 4 ----
 drivers/net/ngbe/ngbe_ethdev_vf.c      | 1 -
 drivers/net/txgbe/txgbe_ethdev_vf.c    | 1 -
 8 files changed, 3 insertions(+), 16 deletions(-)

diff --git a/doc/guides/nics/features/failsafe.ini b/doc/guides/nics/features/failsafe.ini
index c7c696fbbd..09afdc1963 100644
--- a/doc/guides/nics/features/failsafe.ini
+++ b/doc/guides/nics/features/failsafe.ini
@@ -13,6 +13,7 @@ MTU update           = Y
 Promiscuous mode     = Y
 Allmulticast mode    = Y
 Unicast MAC filter   = Y
+VMDq                 = P
 Multicast MAC filter = Y
 VLAN filter          = Y
 Flow control         = Y
diff --git a/doc/guides/nics/features/ipn3ke.ini b/doc/guides/nics/features/ipn3ke.ini
index 29f40a5b11..ba43b9d91c 100644
--- a/doc/guides/nics/features/ipn3ke.ini
+++ b/doc/guides/nics/features/ipn3ke.ini
@@ -18,7 +18,6 @@ Multicast MAC filter = Y
 RSS hash             = Y
 RSS key update       = Y
 RSS reta update      = Y
-VMDq                 = Y
 SR-IOV               = Y
 DCB                  = Y
 VLAN filter          = Y
diff --git a/drivers/net/dpaa/dpaa_ethdev.c b/drivers/net/dpaa/dpaa_ethdev.c
index 1aaf97f175..7d45386a9d 100644
--- a/drivers/net/dpaa/dpaa_ethdev.c
+++ b/drivers/net/dpaa/dpaa_ethdev.c
@@ -662,7 +662,6 @@ static int dpaa_eth_dev_info(struct rte_eth_dev *dev,
 	dev_info->max_mac_addrs = DPAA_MAX_MAC_FILTER;
 	dev_info->max_hash_mac_addrs = 0;
 	dev_info->max_vfs = 0;
-	dev_info->max_vmdq_pools = RTE_ETH_16_POOLS;
 	dev_info->flow_type_rss_offloads = DPAA_RSS_OFFLOAD_ALL;
 
 	if (fif->mac_type == fman_mac_1g) {
diff --git a/drivers/net/dpaa2/dpaa2_ethdev.c b/drivers/net/dpaa2/dpaa2_ethdev.c
index 8ae4fd89c5..07e89d5c39 100644
--- a/drivers/net/dpaa2/dpaa2_ethdev.c
+++ b/drivers/net/dpaa2/dpaa2_ethdev.c
@@ -452,7 +452,6 @@ dpaa2_dev_info_get(struct rte_eth_dev *dev,
 
 	dev_info->max_hash_mac_addrs = 0;
 	dev_info->max_vfs = 0;
-	dev_info->max_vmdq_pools = RTE_ETH_16_POOLS;
 	dev_info->flow_type_rss_offloads = DPAA2_RSS_OFFLOAD_ALL;
 	/* DPAA2 has no software-visible indirection table: incoming packets are
 	 * dispatched to FQs via 'queue_id = hash % dist_size'. We expose the
diff --git a/drivers/net/intel/fm10k/fm10k_ethdev.c b/drivers/net/intel/fm10k/fm10k_ethdev.c
index 3b2daba79e..9b123c0b2c 100644
--- a/drivers/net/intel/fm10k/fm10k_ethdev.c
+++ b/drivers/net/intel/fm10k/fm10k_ethdev.c
@@ -411,7 +411,6 @@ static int
 fm10k_check_mq_mode(struct rte_eth_dev *dev)
 {
 	enum rte_eth_rx_mq_mode rx_mq_mode = dev->data->dev_conf.rxmode.mq_mode;
-	struct fm10k_hw *hw = FM10K_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 	struct rte_eth_vmdq_rx_conf *vmdq_conf;
 	uint16_t nb_rx_q = dev->data->nb_rx_queues;
 
@@ -425,11 +424,6 @@ fm10k_check_mq_mode(struct rte_eth_dev *dev)
 	if (!(rx_mq_mode & RTE_ETH_MQ_RX_VMDQ_FLAG))
 		return 0;
 
-	if (hw->mac.type == fm10k_mac_vf) {
-		PMD_INIT_LOG(ERR, "VMDQ mode is not supported in VF.");
-		return -EINVAL;
-	}
-
 	/* Check VMDQ queue pool number */
 	if (vmdq_conf->nb_queue_pools >
 			sizeof(vmdq_conf->pool_map[0].pools) * CHAR_BIT ||
@@ -1386,7 +1380,8 @@ fm10k_dev_infos_get(struct rte_eth_dev *dev,
 	dev_info->max_vfs            = pdev->max_vfs;
 	dev_info->vmdq_pool_base     = 0;
 	dev_info->vmdq_queue_base    = 0;
-	dev_info->max_vmdq_pools     = RTE_ETH_32_POOLS;
+	if (hw->mac.type != fm10k_mac_vf)
+		dev_info->max_vmdq_pools = RTE_ETH_32_POOLS;
 	dev_info->vmdq_queue_num     = FM10K_MAX_QUEUES_PF;
 	dev_info->rx_queue_offload_capa = fm10k_get_rx_queue_offloads_capa(dev);
 	dev_info->rx_offload_capa = fm10k_get_rx_port_offloads_capa(dev) |
diff --git a/drivers/net/intel/ixgbe/ixgbe_ethdev.c b/drivers/net/intel/ixgbe/ixgbe_ethdev.c
index 44eb932058..50e44484b1 100644
--- a/drivers/net/intel/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/intel/ixgbe/ixgbe_ethdev.c
@@ -4076,10 +4076,6 @@ ixgbevf_dev_info_get(struct rte_eth_dev *dev,
 	dev_info->max_mac_addrs = hw->mac.num_rar_entries;
 	dev_info->max_hash_mac_addrs = IXGBE_VMDQ_NUM_UC_MAC;
 	dev_info->max_vfs = pci_dev->max_vfs;
-	if (hw->mac.type == ixgbe_mac_82598EB)
-		dev_info->max_vmdq_pools = RTE_ETH_16_POOLS;
-	else
-		dev_info->max_vmdq_pools = RTE_ETH_64_POOLS;
 	dev_info->rx_queue_offload_capa = ixgbe_get_rx_queue_offloads(dev);
 	dev_info->rx_offload_capa = (ixgbe_get_rx_port_offloads(dev) |
 				     dev_info->rx_queue_offload_capa);
diff --git a/drivers/net/ngbe/ngbe_ethdev_vf.c b/drivers/net/ngbe/ngbe_ethdev_vf.c
index c440e02369..55cbffaf2c 100644
--- a/drivers/net/ngbe/ngbe_ethdev_vf.c
+++ b/drivers/net/ngbe/ngbe_ethdev_vf.c
@@ -475,7 +475,6 @@ ngbevf_dev_info_get(struct rte_eth_dev *dev,
 	dev_info->max_mac_addrs = hw->mac.num_rar_entries;
 	dev_info->max_hash_mac_addrs = NGBE_VMDQ_NUM_UC_MAC;
 	dev_info->max_vfs = pci_dev->max_vfs;
-	dev_info->max_vmdq_pools = RTE_ETH_64_POOLS;
 	dev_info->rx_queue_offload_capa = ngbe_get_rx_queue_offloads(dev);
 	dev_info->rx_offload_capa = (ngbe_get_rx_port_offloads(dev) |
 				     dev_info->rx_queue_offload_capa);
diff --git a/drivers/net/txgbe/txgbe_ethdev_vf.c b/drivers/net/txgbe/txgbe_ethdev_vf.c
index 341f62bc75..3cf33a8bd6 100644
--- a/drivers/net/txgbe/txgbe_ethdev_vf.c
+++ b/drivers/net/txgbe/txgbe_ethdev_vf.c
@@ -575,7 +575,6 @@ txgbevf_dev_info_get(struct rte_eth_dev *dev,
 	dev_info->max_mac_addrs = hw->mac.num_rar_entries;
 	dev_info->max_hash_mac_addrs = TXGBE_VMDQ_NUM_UC_MAC;
 	dev_info->max_vfs = pci_dev->max_vfs;
-	dev_info->max_vmdq_pools = RTE_ETH_64_POOLS;
 	dev_info->dev_capa &= ~RTE_ETH_DEV_CAPA_FLOW_RULE_KEEP;
 	dev_info->rx_queue_offload_capa = txgbe_get_rx_queue_offloads(dev);
 	dev_info->rx_offload_capa = (txgbe_get_rx_port_offloads(dev) |
-- 
2.54.0

[PATCH v3 07/13] drivers/net: remove check on VMDq modes

[David Marchand]

ethdev now validates requests for VMDq Rx and Tx modes.
No need to validate again in the driver.

Note:
- for igb, max_vmdq_pools is already 0 for models that do not support
  VMDq, so checking the VMDq modes is unneeded,
- for i40e, the FW flag was already checked to populate max_vmdq_pools,

Signed-off-by: David Marchand <david.marchand@redhat.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
---
 drivers/net/hns3/hns3_dcb.c          |  9 -------
 drivers/net/intel/e1000/igb_rxtx.c   | 39 ----------------------------
 drivers/net/intel/i40e/i40e_ethdev.c |  5 ----
 3 files changed, 53 deletions(-)

diff --git a/drivers/net/hns3/hns3_dcb.c b/drivers/net/hns3/hns3_dcb.c
index 6d2945d9c5..e7912aebb2 100644
--- a/drivers/net/hns3/hns3_dcb.c
+++ b/drivers/net/hns3/hns3_dcb.c
@@ -1840,7 +1840,6 @@ int
 hns3_check_dev_mq_mode(struct rte_eth_dev *dev)
 {
 	enum rte_eth_rx_mq_mode rx_mq_mode = dev->data->dev_conf.rxmode.mq_mode;
-	enum rte_eth_tx_mq_mode tx_mq_mode = dev->data->dev_conf.txmode.mq_mode;
 	struct hns3_hw *hw = HNS3_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 	struct hns3_adapter *hns = HNS3_DEV_HW_TO_ADAPTER(hw);
 	struct rte_eth_dcb_rx_conf *dcb_rx_conf;
@@ -1849,14 +1848,6 @@ hns3_check_dev_mq_mode(struct rte_eth_dev *dev)
 	int max_tc = 0;
 	int i;
 
-	if (((uint32_t)rx_mq_mode & RTE_ETH_MQ_RX_VMDQ_FLAG) ||
-	    (tx_mq_mode == RTE_ETH_MQ_TX_VMDQ_DCB ||
-	     tx_mq_mode == RTE_ETH_MQ_TX_VMDQ_ONLY)) {
-		hns3_err(hw, "VMDQ is not supported, rx_mq_mode = %d, tx_mq_mode = %d.",
-			 rx_mq_mode, tx_mq_mode);
-		return -EOPNOTSUPP;
-	}
-
 	dcb_rx_conf = &dev->data->dev_conf.rx_adv_conf.dcb_rx_conf;
 	dcb_tx_conf = &dev->data->dev_conf.tx_adv_conf.dcb_tx_conf;
 	if ((uint32_t)rx_mq_mode & RTE_ETH_MQ_RX_DCB_FLAG) {
diff --git a/drivers/net/intel/e1000/igb_rxtx.c b/drivers/net/intel/e1000/igb_rxtx.c
index 4fda5d57a0..ef531f1cd4 100644
--- a/drivers/net/intel/e1000/igb_rxtx.c
+++ b/drivers/net/intel/e1000/igb_rxtx.c
@@ -2113,41 +2113,6 @@ igb_rss_configure(struct rte_eth_dev *dev)
 	igb_hw_rss_hash_set(hw, &rss_conf);
 }
 
-/*
- * Check if the mac type support VMDq or not.
- * Return 1 if it supports, otherwise, return 0.
- */
-static int
-igb_is_vmdq_supported(const struct rte_eth_dev *dev)
-{
-	const struct e1000_hw *hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
-
-	switch (hw->mac.type) {
-	case e1000_82576:
-	case e1000_82580:
-	case e1000_i350:
-		return 1;
-	case e1000_82540:
-	case e1000_82541:
-	case e1000_82542:
-	case e1000_82543:
-	case e1000_82544:
-	case e1000_82545:
-	case e1000_82546:
-	case e1000_82547:
-	case e1000_82571:
-	case e1000_82572:
-	case e1000_82573:
-	case e1000_82574:
-	case e1000_82583:
-	case e1000_i210:
-	case e1000_i211:
-	default:
-		PMD_INIT_LOG(ERR, "Cannot support VMDq feature");
-		return 0;
-	}
-}
-
 static int
 igb_vmdq_rx_hw_configure(struct rte_eth_dev *dev)
 {
@@ -2161,10 +2126,6 @@ igb_vmdq_rx_hw_configure(struct rte_eth_dev *dev)
 	hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 	cfg = &dev->data->dev_conf.rx_adv_conf.vmdq_rx_conf;
 
-	/* Check if mac type can support VMDq, return value of 0 means NOT support */
-	if (igb_is_vmdq_supported(dev) == 0)
-		return -1;
-
 	igb_rss_disable(dev);
 
 	/* RCTL: enable VLAN filter */
diff --git a/drivers/net/intel/i40e/i40e_ethdev.c b/drivers/net/intel/i40e/i40e_ethdev.c
index 41d5586403..2405d9e119 100644
--- a/drivers/net/intel/i40e/i40e_ethdev.c
+++ b/drivers/net/intel/i40e/i40e_ethdev.c
@@ -6655,11 +6655,6 @@ i40e_vmdq_setup(struct rte_eth_dev *dev)
 	 */
 	i40e_pf_disable_irq0(hw);
 
-	if ((pf->flags & I40E_FLAG_VMDQ) == 0) {
-		PMD_INIT_LOG(ERR, "FW doesn't support VMDQ");
-		return -ENOTSUP;
-	}
-
 	conf_vsis = conf->rx_adv_conf.vmdq_rx_conf.nb_queue_pools;
 	if (conf_vsis > pf->max_nb_vmdq_vsi) {
 		PMD_INIT_LOG(ERR, "VMDQ config: %u, max support:%u",
-- 
2.54.0

Re: [PATCH v3 07/13] drivers/net: remove check on VMDq modes

[fengchengwen]

Acked-by: Chengwen Feng <fengchengwen@huawei.com>

On 10/23/2026 1:44 AM, David Marchand wrote:
> ethdev now validates requests for VMDq Rx and Tx modes.
> No need to validate again in the driver.
> 
> Note:
> - for igb, max_vmdq_pools is already 0 for models that do not support
>   VMDq, so checking the VMDq modes is unneeded,
> - for i40e, the FW flag was already checked to populate max_vmdq_pools,
> 
> Signed-off-by: David Marchand <david.marchand@redhat.com>
> Acked-by: Bruce Richardson <bruce.richardson@intel.com>

[PATCH v3 08/13] devtools: check VMDq capability

[David Marchand]

Let's check that the code and the documentation are aligned for VMDq
capability.

Some driver directory hosts multiple drivers that have multiple
corresponding entry in doc/guides/features/.
For this case, only try to detect a discrepancy if any doc announce a
feature but no code can be found.

Note: net/atlantic and net/cxgbe were forcibly setting some fields in
dev_info to 0, which is unneeded since ethdev already clears the structure.

Signed-off-by: David Marchand <david.marchand@redhat.com>
---
Changes since v2:
- inverted logic: 

Changes since v1:
- added helper for checking mq capabilities,
- added handling of multi drivers,
- moved net/atlantic and net/cxgbe cleanups here,

---
 devtools/check-doc-vs-code.sh     | 50 +++++++++++++++++++++++++++++++
 drivers/net/atlantic/atl_ethdev.c |  2 --
 drivers/net/cxgbe/cxgbe_ethdev.c  |  1 -
 3 files changed, 50 insertions(+), 3 deletions(-)

diff --git a/devtools/check-doc-vs-code.sh b/devtools/check-doc-vs-code.sh
index 7afc18d153..e84b003a51 100755
--- a/devtools/check-doc-vs-code.sh
+++ b/devtools/check-doc-vs-code.sh
@@ -161,10 +161,54 @@ check_rte_flow() # <driver>
 	fi
 }
 
+has_doc_feature() # <ini_file> <feature>
+{
+	grep -q "^$2[[:space:]]*=[[:space:]]*[YP]" "$1"
+}
+
+# check if any doc for a code directory has a feature
+any_doc_has_feature() # <code_dir> <feature>
+{
+	for drv in $(docs_for_code $1); do
+		d=$rootdir/doc/guides/nics/features/$drv.ini
+		if has_doc_feature "$d" "$2"; then
+			return 0
+		fi
+	done
+	return 1
+}
+
+check_mq_cap() # <driver> <feature> <indicator> <code_pattern> <mq_pattern>
+{
+	if has_doc_feature "$doc" "$2"; then
+		# doc claims feature, code must have it
+		git grep -qE "$4" -- "$code" ||
+			error "$2 documented but $3 not set for $1"
+	elif ! any_doc_has_feature "$code" "$2"; then
+		# check code->doc only if no doc for the code directory has the feature
+		! git grep -qE "$4" -- "$code" ||
+			error "$3 set but $2 not documented for $1"
+		! git grep -qE "$5" -- "$code" ||
+			error "$2 mq_mode referenced but $2 not documented for $1"
+	fi
+}
+
+check_mq_caps() # <driver>
+{
+	code=$(driver_code_dir $1)
+	doc=$rootdir/doc/guides/nics/features/$1.ini
+	[ -d $code ] || return 0
+	[ -f $doc ] || return 0
+
+	check_mq_cap $1 "VMDq" "max_vmdq_pools" 'max_vmdq_pools[[:space:]]*=' \
+		'RTE_ETH_MQ_(RX|TX).*VMDQ'
+}
+
 if [ -z "$trusted_commit" ]; then
 	# check all
 	for driver in $(all_net_drivers); do
 		check_rte_flow $driver
+		check_mq_caps $driver
 	done
 	exit $result
 fi
@@ -176,4 +220,10 @@ if has_code_change 'RTE_FLOW_.*_TYPE_' ||
 		check_rte_flow $driver
 	done
 fi
+if has_code_change 'max_vmdq_pools|RTE_ETH_MQ_.*VMDQ' ||
+		has_file_change 'doc/guides/nics/features'; then
+	for driver in $(changed_net_drivers); do
+		check_mq_caps $driver
+	done
+fi
 exit $result
diff --git a/drivers/net/atlantic/atl_ethdev.c b/drivers/net/atlantic/atl_ethdev.c
index 24184bdb18..44a65d7557 100644
--- a/drivers/net/atlantic/atl_ethdev.c
+++ b/drivers/net/atlantic/atl_ethdev.c
@@ -1106,8 +1106,6 @@ atl_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
 	dev_info->max_vfs = pci_dev->max_vfs;
 
 	dev_info->max_hash_mac_addrs = 0;
-	dev_info->max_vmdq_pools = 0;
-	dev_info->vmdq_queue_num = 0;
 
 	dev_info->rx_offload_capa = ATL_RX_OFFLOADS;
 
diff --git a/drivers/net/cxgbe/cxgbe_ethdev.c b/drivers/net/cxgbe/cxgbe_ethdev.c
index 82e67eeff1..93554f354c 100644
--- a/drivers/net/cxgbe/cxgbe_ethdev.c
+++ b/drivers/net/cxgbe/cxgbe_ethdev.c
@@ -129,7 +129,6 @@ int cxgbe_dev_info_get(struct rte_eth_dev *eth_dev,
 	device_info->max_mac_addrs = 1;
 	/* XXX: For now we support one MAC/port */
 	device_info->max_vfs = adapter->params.arch.vfcount;
-	device_info->max_vmdq_pools = 0; /* XXX: For now no support for VMDQ */
 
 	device_info->dev_capa &= ~RTE_ETH_DEV_CAPA_FLOW_RULE_KEEP;
 
-- 
2.54.0

[PATCH v3 09/13] doc: fix DCB capability for some Intel drivers

[David Marchand]

Those drivers never supported DCB.

Fixes: 83a4a15404ef ("doc: fill nics features matrix for e1000/igb and ixgbe")
Fixes: c01c748e4ae6 ("net/ipn3ke: add new driver")
Cc: stable@dpdk.org

Signed-off-by: David Marchand <david.marchand@redhat.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
---
 doc/guides/nics/features/igb.ini    | 1 -
 doc/guides/nics/features/ipn3ke.ini | 1 -
 2 files changed, 2 deletions(-)

diff --git a/doc/guides/nics/features/igb.ini b/doc/guides/nics/features/igb.ini
index 4ee500e114..451cf30948 100644
--- a/doc/guides/nics/features/igb.ini
+++ b/doc/guides/nics/features/igb.ini
@@ -20,7 +20,6 @@ RSS key update       = Y
 RSS reta update      = Y
 VMDq                 = Y
 SR-IOV               = Y
-DCB                  = Y
 VLAN filter          = Y
 Flow control         = Y
 CRC offload          = Y
diff --git a/doc/guides/nics/features/ipn3ke.ini b/doc/guides/nics/features/ipn3ke.ini
index ba43b9d91c..6abaf9e4f9 100644
--- a/doc/guides/nics/features/ipn3ke.ini
+++ b/doc/guides/nics/features/ipn3ke.ini
@@ -19,7 +19,6 @@ RSS hash             = Y
 RSS key update       = Y
 RSS reta update      = Y
 SR-IOV               = Y
-DCB                  = Y
 VLAN filter          = Y
 Flow control         = Y
 Traffic manager      = Y
-- 
2.54.0

[PATCH v3 10/13] ethdev: check DCB availability

[David Marchand]

Add DCB capability check in rte_eth_dev_configure() using
dev->dev_ops->get_dcb_info.

When NULL, reject Rx modes with RTE_ETH_MQ_RX_DCB_FLAG and
Tx modes RTE_ETH_MQ_TX_DCB and RTE_ETH_MQ_TX_VMDQ_DCB.
Remove redundant DCB checks from drivers.

Check that documentation is aligned with driver code.

Signed-off-by: David Marchand <david.marchand@redhat.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
---
 devtools/check-doc-vs-code.sh          |  4 +++-
 doc/guides/rel_notes/release_26_11.rst | 11 ++++++++---
 drivers/net/intel/e1000/igb_ethdev.c   |  6 ------
 drivers/net/intel/fm10k/fm10k_ethdev.c |  5 -----
 lib/ethdev/rte_ethdev.c                | 16 ++++++++++++++++
 5 files changed, 27 insertions(+), 15 deletions(-)

diff --git a/devtools/check-doc-vs-code.sh b/devtools/check-doc-vs-code.sh
index e84b003a51..d2b7683c4f 100755
--- a/devtools/check-doc-vs-code.sh
+++ b/devtools/check-doc-vs-code.sh
@@ -200,6 +200,8 @@ check_mq_caps() # <driver>
 	[ -d $code ] || return 0
 	[ -f $doc ] || return 0
 
+	check_mq_cap $1 "DCB" "get_dcb_info" '\.get_dcb_info[[:space:]]*=' \
+		'RTE_ETH_MQ_(RX|TX).*DCB'
 	check_mq_cap $1 "VMDq" "max_vmdq_pools" 'max_vmdq_pools[[:space:]]*=' \
 		'RTE_ETH_MQ_(RX|TX).*VMDQ'
 }
@@ -220,7 +222,7 @@ if has_code_change 'RTE_FLOW_.*_TYPE_' ||
 		check_rte_flow $driver
 	done
 fi
-if has_code_change 'max_vmdq_pools|RTE_ETH_MQ_.*VMDQ' ||
+if has_code_change 'get_dcb_info|max_vmdq_pools|RTE_ETH_MQ_.*DCB|RTE_ETH_MQ_.*VMDQ' ||
 		has_file_change 'doc/guides/nics/features'; then
 	for driver in $(changed_net_drivers); do
 		check_mq_caps $driver
diff --git a/doc/guides/rel_notes/release_26_11.rst b/doc/guides/rel_notes/release_26_11.rst
index be758a0c02..9341769c32 100644
--- a/doc/guides/rel_notes/release_26_11.rst
+++ b/doc/guides/rel_notes/release_26_11.rst
@@ -424,11 +424,16 @@ API Changes
   * Removed the ``unused`` field.
   * Changed the ``objs`` array from fixed size to variable size.
 
+* ethdev: Updated multi-queue mode validation at port configuration time:
+
+  * DCB modes (Rx ``RTE_ETH_MQ_RX_DCB_FLAG``, Tx ``RTE_ETH_MQ_TX_DCB``/``RTE_ETH_MQ_TX_VMDQ_DCB``)
+    are rejected if the driver has no ``get_dcb_info`` callback.
+  * VMDq modes (Rx ``RTE_ETH_MQ_RX_VMDQ_FLAG``,
+    Tx ``RTE_ETH_MQ_TX_VMDQ_DCB``/``RTE_ETH_MQ_TX_VMDQ_ONLY``) are rejected
+    if the driver reports no VMDq pool.
+
 * ethdev: Updated VMDq related API.
 
-  * At port configuration time, the number of VMDq pools advertised by a driver
-    is now used to validate VMDq related Rx and Tx modes
-    (``RTE_ETH_MQ_RX_VMDQ_FLAG``, ``RTE_ETH_MQ_TX_VMDQ_DCB``, ``RTE_ETH_MQ_TX_VMDQ_ONLY``).
   * A check was added in ``rte_eth_dev_mac_addr_add`` to validate that
     the ``pool`` parameter is 0 when VMDq is not configured.
   * The ``RTE_ETH_NUM_RECEIVE_MAC_ADDR`` and ``RTE_ETH_VMDQ_NUM_UC_HASH_ARRAY`` macros
diff --git a/drivers/net/intel/e1000/igb_ethdev.c b/drivers/net/intel/e1000/igb_ethdev.c
index 524c030be6..181af58169 100644
--- a/drivers/net/intel/e1000/igb_ethdev.c
+++ b/drivers/net/intel/e1000/igb_ethdev.c
@@ -1144,12 +1144,6 @@ igb_check_mq_mode(struct rte_eth_dev *dev)
 	uint16_t nb_rx_q = dev->data->nb_rx_queues;
 	uint16_t nb_tx_q = dev->data->nb_tx_queues;
 
-	if ((rx_mq_mode & RTE_ETH_MQ_RX_DCB_FLAG) ||
-	    tx_mq_mode == RTE_ETH_MQ_TX_DCB ||
-	    tx_mq_mode == RTE_ETH_MQ_TX_VMDQ_DCB) {
-		PMD_INIT_LOG(ERR, "DCB mode is not supported.");
-		return -EINVAL;
-	}
 	if (RTE_ETH_DEV_SRIOV(dev).active != 0) {
 		/* Check multi-queue mode.
 		 * To no break software we accept RTE_ETH_MQ_RX_NONE as this might
diff --git a/drivers/net/intel/fm10k/fm10k_ethdev.c b/drivers/net/intel/fm10k/fm10k_ethdev.c
index 9b123c0b2c..5aa15a8dba 100644
--- a/drivers/net/intel/fm10k/fm10k_ethdev.c
+++ b/drivers/net/intel/fm10k/fm10k_ethdev.c
@@ -416,11 +416,6 @@ fm10k_check_mq_mode(struct rte_eth_dev *dev)
 
 	vmdq_conf = &dev->data->dev_conf.rx_adv_conf.vmdq_rx_conf;
 
-	if (rx_mq_mode & RTE_ETH_MQ_RX_DCB_FLAG) {
-		PMD_INIT_LOG(ERR, "DCB mode is not supported.");
-		return -EINVAL;
-	}
-
 	if (!(rx_mq_mode & RTE_ETH_MQ_RX_VMDQ_FLAG))
 		return 0;
 
diff --git a/lib/ethdev/rte_ethdev.c b/lib/ethdev/rte_ethdev.c
index f843e8808a..39a895c9e4 100644
--- a/lib/ethdev/rte_ethdev.c
+++ b/lib/ethdev/rte_ethdev.c
@@ -1573,6 +1573,22 @@ rte_eth_dev_configure(uint16_t port_id, uint16_t nb_rx_q, uint16_t nb_tx_q,
 		goto rollback;
 	}
 
+	if (dev->dev_ops->get_dcb_info == NULL) {
+		if ((dev_conf->rxmode.mq_mode & RTE_ETH_MQ_RX_DCB_FLAG) != 0) {
+			RTE_ETHDEV_LOG_LINE(ERR, "Ethdev port_id=%u does not support DCB rx mode",
+				port_id);
+			ret = -EINVAL;
+			goto rollback;
+		}
+		if (dev_conf->txmode.mq_mode == RTE_ETH_MQ_TX_DCB ||
+				dev_conf->txmode.mq_mode == RTE_ETH_MQ_TX_VMDQ_DCB) {
+			RTE_ETHDEV_LOG_LINE(ERR, "Ethdev port_id=%u does not support DCB tx mode",
+				port_id);
+			ret = -EINVAL;
+			goto rollback;
+		}
+	}
+
 	if (dev_info.max_vmdq_pools == 0) {
 		if ((dev_conf->rxmode.mq_mode & RTE_ETH_MQ_RX_VMDQ_FLAG) != 0) {
 			RTE_ETHDEV_LOG_LINE(ERR, "Ethdev port_id=%u does not support VMDq rx mode",
-- 
2.54.0

Re: [PATCH v3 10/13] ethdev: check DCB availability

[fengchengwen]

Acked-by: Chengwen Feng <fengchengwen@huawei.com>

On 10/23/2026 1:44 AM, David Marchand wrote:
> Add DCB capability check in rte_eth_dev_configure() using
> dev->dev_ops->get_dcb_info.
> 
> When NULL, reject Rx modes with RTE_ETH_MQ_RX_DCB_FLAG and
> Tx modes RTE_ETH_MQ_TX_DCB and RTE_ETH_MQ_TX_VMDQ_DCB.
> Remove redundant DCB checks from drivers.
> 
> Check that documentation is aligned with driver code.
> 
> Signed-off-by: David Marchand <david.marchand@redhat.com>
> Acked-by: Bruce Richardson <bruce.richardson@intel.com>

[PATCH v3 11/13] drivers/net: fix reported RSS capability

[David Marchand]

Some drivers (idpf, cpfl) report RSS support even if lacking HW support.
On the other hand, some driver do have support but do not advertise it
(either in dev_info, or in the documentation).

failsafe may support RSS, as it only passes the requests to the ports
attached to it, hence mark it as partial support.

Fixes: c01c748e4ae6 ("net/ipn3ke: add new driver")
Fixes: 70675bcc3a57 ("net/idpf: support RSS")
Fixes: cfbc66551a14 ("net/cpfl: support RSS")
Fixes: 5fb899f4b225 ("net/xsc: support RSS configuration")
Fixes: 9f75cad1287f ("net/xsc: add PCT interfaces")
Fixes: ff8db3711b29 ("net/nbl: support infos query")
Cc: stable@dpdk.org

Signed-off-by: David Marchand <david.marchand@redhat.com>
Reviewed-by: Renyong Wan <wanry@yunsilicon.com>
---
Changes since v1:
- fixed ip3nke,
- moved all RSS capabilities under check for idpf and cpfl,
- adjusted xsc RSS capabilities,

---
 doc/guides/nics/features/failsafe.ini     | 1 +
 doc/guides/nics/features/ipn3ke.ini       | 3 ---
 doc/guides/nics/features/nbl.ini          | 1 +
 doc/guides/nics/features/netvsc.ini       | 1 +
 drivers/net/intel/cpfl/cpfl_ethdev.c      | 9 +++++----
 drivers/net/intel/cpfl/cpfl_representor.c | 4 +++-
 drivers/net/intel/idpf/idpf_ethdev.c      | 9 +++++----
 drivers/net/xsc/xsc_ethdev.c              | 4 ++++
 8 files changed, 20 insertions(+), 12 deletions(-)

diff --git a/doc/guides/nics/features/failsafe.ini b/doc/guides/nics/features/failsafe.ini
index 09afdc1963..b778a40be6 100644
--- a/doc/guides/nics/features/failsafe.ini
+++ b/doc/guides/nics/features/failsafe.ini
@@ -18,6 +18,7 @@ Multicast MAC filter = Y
 VLAN filter          = Y
 Flow control         = Y
 Packet type parsing  = Y
+RSS hash             = P
 Stats per queue      = Y
 ARMv7                = Y
 ARMv8                = Y
diff --git a/doc/guides/nics/features/ipn3ke.ini b/doc/guides/nics/features/ipn3ke.ini
index 6abaf9e4f9..1f9a28f198 100644
--- a/doc/guides/nics/features/ipn3ke.ini
+++ b/doc/guides/nics/features/ipn3ke.ini
@@ -15,9 +15,6 @@ Promiscuous mode     = Y
 Allmulticast mode    = Y
 Unicast MAC filter   = Y
 Multicast MAC filter = Y
-RSS hash             = Y
-RSS key update       = Y
-RSS reta update      = Y
 SR-IOV               = Y
 VLAN filter          = Y
 Flow control         = Y
diff --git a/doc/guides/nics/features/nbl.ini b/doc/guides/nics/features/nbl.ini
index 5935092a49..e799840e40 100644
--- a/doc/guides/nics/features/nbl.ini
+++ b/doc/guides/nics/features/nbl.ini
@@ -9,6 +9,7 @@ MTU update           = Y
 Scattered Rx         = Y
 Promiscuous mode     = Y
 Unicast MAC filter   = Y
+RSS hash             = Y
 VLAN offload         = P
 Extended stats       = Y
 Stats per queue      = Y
diff --git a/doc/guides/nics/features/netvsc.ini b/doc/guides/nics/features/netvsc.ini
index fa8c2ac132..7bc7148f95 100644
--- a/doc/guides/nics/features/netvsc.ini
+++ b/doc/guides/nics/features/netvsc.ini
@@ -8,6 +8,7 @@ Speed capabilities   = P
 Free Tx mbuf on demand = Y
 Scattered Rx         = Y
 Promiscuous mode     = Y
+RSS hash             = Y
 Allmulticast mode    = Y
 Stats per queue      = Y
 Extended stats       = Y
diff --git a/drivers/net/intel/cpfl/cpfl_ethdev.c b/drivers/net/intel/cpfl/cpfl_ethdev.c
index 32e0f81d99..c235373daf 100644
--- a/drivers/net/intel/cpfl/cpfl_ethdev.c
+++ b/drivers/net/intel/cpfl/cpfl_ethdev.c
@@ -209,10 +209,11 @@ cpfl_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
 	dev_info->max_mtu = vport->max_mtu;
 	dev_info->min_mtu = RTE_ETHER_MIN_MTU;
 
-	dev_info->hash_key_size = vport->rss_key_size;
-	dev_info->reta_size = vport->rss_lut_size;
-
-	dev_info->flow_type_rss_offloads = CPFL_RSS_OFFLOAD_ALL;
+	if (base->caps.rss_caps != 0) {
+		dev_info->hash_key_size = vport->rss_key_size;
+		dev_info->reta_size = vport->rss_lut_size;
+		dev_info->flow_type_rss_offloads = CPFL_RSS_OFFLOAD_ALL;
+	}
 
 	dev_info->rx_offload_capa =
 		RTE_ETH_RX_OFFLOAD_IPV4_CKSUM           |
diff --git a/drivers/net/intel/cpfl/cpfl_representor.c b/drivers/net/intel/cpfl/cpfl_representor.c
index 60b72b5ec1..bb28c0b989 100644
--- a/drivers/net/intel/cpfl/cpfl_representor.c
+++ b/drivers/net/intel/cpfl/cpfl_representor.c
@@ -195,6 +195,7 @@ cpfl_repr_dev_info_get(struct rte_eth_dev *ethdev,
 		       struct rte_eth_dev_info *dev_info)
 {
 	struct cpfl_repr *repr = CPFL_DEV_TO_REPR(ethdev);
+	struct cpfl_adapter_ext *adapter = repr->itf.adapter;
 
 	dev_info->device = ethdev->device;
 	dev_info->max_mac_addrs = 1;
@@ -203,7 +204,8 @@ cpfl_repr_dev_info_get(struct rte_eth_dev *ethdev,
 	dev_info->min_rx_bufsize = CPFL_MIN_BUF_SIZE;
 	dev_info->max_rx_pktlen = CPFL_MAX_FRAME_SIZE;
 
-	dev_info->flow_type_rss_offloads = CPFL_RSS_OFFLOAD_ALL;
+	if (adapter->base.caps.rss_caps != 0)
+		dev_info->flow_type_rss_offloads = CPFL_RSS_OFFLOAD_ALL;
 
 	dev_info->rx_offload_capa =
 		RTE_ETH_RX_OFFLOAD_VLAN_STRIP		|
diff --git a/drivers/net/intel/idpf/idpf_ethdev.c b/drivers/net/intel/idpf/idpf_ethdev.c
index e9e9781fdd..fbd50d0a91 100644
--- a/drivers/net/intel/idpf/idpf_ethdev.c
+++ b/drivers/net/intel/idpf/idpf_ethdev.c
@@ -166,10 +166,11 @@ idpf_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
 	dev_info->max_mtu = vport->max_mtu;
 	dev_info->min_mtu = RTE_ETHER_MIN_MTU;
 
-	dev_info->hash_key_size = vport->rss_key_size;
-	dev_info->reta_size = vport->rss_lut_size;
-
-	dev_info->flow_type_rss_offloads = IDPF_RSS_OFFLOAD_ALL;
+	if (adapter->caps.rss_caps != 0) {
+		dev_info->hash_key_size = vport->rss_key_size;
+		dev_info->reta_size = vport->rss_lut_size;
+		dev_info->flow_type_rss_offloads = IDPF_RSS_OFFLOAD_ALL;
+	}
 
 	dev_info->rx_offload_capa =
 		RTE_ETH_RX_OFFLOAD_IPV4_CKSUM           |
diff --git a/drivers/net/xsc/xsc_ethdev.c b/drivers/net/xsc/xsc_ethdev.c
index 5fbe68782e..20d6f58f68 100644
--- a/drivers/net/xsc/xsc_ethdev.c
+++ b/drivers/net/xsc/xsc_ethdev.c
@@ -469,6 +469,10 @@ xsc_ethdev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
 	info->if_index = priv->ifindex;
 	info->speed_capa = priv->xdev->link_speed_capa;
 	info->hash_key_size = XSC_RSS_HASH_KEY_LEN;
+	info->flow_type_rss_offloads = RTE_ETH_RSS_IP | RTE_ETH_RSS_UDP |
+		RTE_ETH_RSS_TCP | RTE_ETH_RSS_L3_SRC_ONLY |
+		RTE_ETH_RSS_L3_DST_ONLY | RTE_ETH_RSS_L4_SRC_ONLY |
+		RTE_ETH_RSS_L4_DST_ONLY | RTE_ETH_RSS_LEVEL_INNERMOST;
 	info->tx_desc_lim.nb_seg_max = 8;
 	info->tx_desc_lim.nb_mtu_seg_max = 8;
 	info->switch_info.name = dev->data->name;
-- 
2.54.0

[PATCH v3 12/13] ethdev: check RSS availability

[David Marchand]

Add RSS capability check in rte_eth_dev_configure() using
dev_info.flow_type_rss_offloads.

When zero, reject Rx modes with RTE_ETH_MQ_RX_RSS_FLAG
unless only one queue was requested.

If a driver does not advertise RSS, don't request it in test
applications or examples, as role model citizens.

Remove redundant RSS checks from drivers.

Signed-off-by: David Marchand <david.marchand@redhat.com>
---
Changes since v2:
- adjusted commitlog,

Changes since v1:
- updated all test applications and examples,
- relaxed check on RSS request for only one rxq,
- cleaned up unreachable code in cnxk and sfc representor code,

---
 app/graph/ethdev.c                            |  7 +++--
 app/test-eventdev/test_perf_common.c          |  2 ++
 app/test-eventdev/test_pipeline_common.c      |  2 ++
 devtools/check-doc-vs-code.sh                 |  4 ++-
 doc/guides/rel_notes/release_26_11.rst        |  2 ++
 drivers/net/cnxk/cnxk_rep_ops.c               | 21 ++------------
 drivers/net/intel/cpfl/cpfl_ethdev.c          |  3 --
 drivers/net/nfp/nfp_net_common.c              |  7 -----
 drivers/net/octeontx/octeontx_ethdev.c        |  3 +-
 drivers/net/sfc/sfc_repr.c                    | 29 ++++---------------
 drivers/net/sfc/sfc_rx.c                      |  9 +-----
 examples/distributor/main.c                   |  2 ++
 examples/dma/dmafwd.c                         |  2 ++
 .../pipeline_worker_generic.c                 |  2 ++
 .../eventdev_pipeline/pipeline_worker_tx.c    |  2 ++
 examples/ip_reassembly/main.c                 |  2 ++
 examples/ipsec-secgw/ipsec-secgw.c            |  2 ++
 examples/l2fwd-event/l2fwd_common.c           |  2 ++
 examples/l3fwd-graph/main.c                   |  2 ++
 examples/l3fwd/main.c                         |  3 +-
 .../client_server_mp/mp_server/init.c         | 10 ++++++-
 examples/multi_process/symmetric_mp/main.c    |  2 ++
 examples/ntb/ntb_fwd.c                        |  2 ++
 examples/pipeline/obj.c                       |  7 +++--
 examples/qos_meter/main.c                     |  4 +++
 examples/server_node_efd/efd_server/init.c    |  3 ++
 lib/ethdev/rte_ethdev.c                       | 13 +++++++++
 27 files changed, 80 insertions(+), 69 deletions(-)

diff --git a/app/graph/ethdev.c b/app/graph/ethdev.c
index 2f4cf65c96..ee4b9014e8 100644
--- a/app/graph/ethdev.c
+++ b/app/graph/ethdev.c
@@ -426,8 +426,11 @@ ethdev_process(const char *name, struct ethdev_config *params)
 	if (rss) {
 		uint64_t rss_hf = RTE_ETH_RSS_IP | RTE_ETH_RSS_TCP | RTE_ETH_RSS_UDP;
 
-		port_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_RSS;
-		port_conf.rx_adv_conf.rss_conf.rss_hf = rss_hf & port_info.flow_type_rss_offloads;
+		rss_hf &= port_info.flow_type_rss_offloads;
+		if (rss_hf != 0) {
+			port_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_RSS;
+			port_conf.rx_adv_conf.rss_conf.rss_hf = rss_hf;
+		}
 	}
 
 	numa_node = rte_eth_dev_socket_id(port_id);
diff --git a/app/test-eventdev/test_perf_common.c b/app/test-eventdev/test_perf_common.c
index 8201f2351a..a7858854eb 100644
--- a/app/test-eventdev/test_perf_common.c
+++ b/app/test-eventdev/test_perf_common.c
@@ -1917,6 +1917,8 @@ perf_ethdev_setup(struct evt_test *test, struct evt_options *opt)
 
 		local_port_conf.rx_adv_conf.rss_conf.rss_hf &=
 			dev_info.flow_type_rss_offloads;
+		if (local_port_conf.rx_adv_conf.rss_conf.rss_hf == 0)
+			local_port_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE;
 		if (local_port_conf.rx_adv_conf.rss_conf.rss_hf !=
 				port_conf.rx_adv_conf.rss_conf.rss_hf) {
 			evt_info("Port %u modified RSS hash function based on hardware support,"
diff --git a/app/test-eventdev/test_pipeline_common.c b/app/test-eventdev/test_pipeline_common.c
index eaf895869f..b6af0ad987 100644
--- a/app/test-eventdev/test_pipeline_common.c
+++ b/app/test-eventdev/test_pipeline_common.c
@@ -379,6 +379,8 @@ pipeline_ethdev_setup(struct evt_test *test, struct evt_options *opt)
 
 		local_port_conf.rx_adv_conf.rss_conf.rss_hf &=
 			dev_info.flow_type_rss_offloads;
+		if (local_port_conf.rx_adv_conf.rss_conf.rss_hf == 0)
+			local_port_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE;
 		if (local_port_conf.rx_adv_conf.rss_conf.rss_hf !=
 				port_conf.rx_adv_conf.rss_conf.rss_hf) {
 			evt_info("Port %u modified RSS hash function based on hardware support,"
diff --git a/devtools/check-doc-vs-code.sh b/devtools/check-doc-vs-code.sh
index d2b7683c4f..4c45bc0bba 100755
--- a/devtools/check-doc-vs-code.sh
+++ b/devtools/check-doc-vs-code.sh
@@ -202,6 +202,8 @@ check_mq_caps() # <driver>
 
 	check_mq_cap $1 "DCB" "get_dcb_info" '\.get_dcb_info[[:space:]]*=' \
 		'RTE_ETH_MQ_(RX|TX).*DCB'
+	check_mq_cap $1 "RSS hash" "flow_type_rss_offloads" \
+		'flow_type_rss_offloads[[:space:]]*\|?=' 'RTE_ETH_MQ_RX.*RSS'
 	check_mq_cap $1 "VMDq" "max_vmdq_pools" 'max_vmdq_pools[[:space:]]*=' \
 		'RTE_ETH_MQ_(RX|TX).*VMDQ'
 }
@@ -222,7 +224,7 @@ if has_code_change 'RTE_FLOW_.*_TYPE_' ||
 		check_rte_flow $driver
 	done
 fi
-if has_code_change 'get_dcb_info|max_vmdq_pools|RTE_ETH_MQ_.*DCB|RTE_ETH_MQ_.*VMDQ' ||
+if has_code_change 'get_dcb_info|flow_type_rss_offloads|max_vmdq_pools|RTE_ETH_MQ_' ||
 		has_file_change 'doc/guides/nics/features'; then
 	for driver in $(changed_net_drivers); do
 		check_mq_caps $driver
diff --git a/doc/guides/rel_notes/release_26_11.rst b/doc/guides/rel_notes/release_26_11.rst
index 9341769c32..caffd2a611 100644
--- a/doc/guides/rel_notes/release_26_11.rst
+++ b/doc/guides/rel_notes/release_26_11.rst
@@ -428,6 +428,8 @@ API Changes
 
   * DCB modes (Rx ``RTE_ETH_MQ_RX_DCB_FLAG``, Tx ``RTE_ETH_MQ_TX_DCB``/``RTE_ETH_MQ_TX_VMDQ_DCB``)
     are rejected if the driver has no ``get_dcb_info`` callback.
+  * RSS mode (Rx ``RTE_ETH_MQ_RX_RSS_FLAG``) is rejected if the driver reports no
+    ``flow_type_rss_offloads``.
   * VMDq modes (Rx ``RTE_ETH_MQ_RX_VMDQ_FLAG``,
     Tx ``RTE_ETH_MQ_TX_VMDQ_DCB``/``RTE_ETH_MQ_TX_VMDQ_ONLY``) are rejected
     if the driver reports no VMDq pool.
diff --git a/drivers/net/cnxk/cnxk_rep_ops.c b/drivers/net/cnxk/cnxk_rep_ops.c
index 4a9c027bf5..d472cc4b08 100644
--- a/drivers/net/cnxk/cnxk_rep_ops.c
+++ b/drivers/net/cnxk/cnxk_rep_ops.c
@@ -133,9 +133,8 @@ cnxk_rep_representor_info_get(struct rte_eth_dev *ethdev, struct rte_eth_represe
 }
 
 static int
-rep_eth_conf_chk(const struct rte_eth_conf *conf, uint16_t nb_rx_queues)
+rep_eth_conf_chk(const struct rte_eth_conf *conf)
 {
-	const struct rte_eth_rss_conf *rss_conf;
 	int ret = 0;
 
 	if (conf->link_speeds != 0) {
@@ -144,24 +143,10 @@ rep_eth_conf_chk(const struct rte_eth_conf *conf, uint16_t nb_rx_queues)
 	}
 
 	switch (conf->rxmode.mq_mode) {
-	case RTE_ETH_MQ_RX_RSS:
-		if (nb_rx_queues != 1) {
-			plt_err("Rx RSS is not supported with %u queues", nb_rx_queues);
-			ret = -EINVAL;
-			break;
-		}
-
-		rss_conf = &conf->rx_adv_conf.rss_conf;
-		if (rss_conf->rss_key != NULL || rss_conf->rss_key_len != 0 ||
-		    rss_conf->rss_hf != 0) {
-			plt_err("Rx RSS configuration is not supported");
-			ret = -EINVAL;
-		}
-		break;
 	case RTE_ETH_MQ_RX_NONE:
 		break;
 	default:
-		plt_err("Rx mode MQ modes other than RSS not supported");
+		plt_err("Rx mode MQ modes other than none not supported");
 		ret = -EINVAL;
 		break;
 	}
@@ -205,7 +190,7 @@ cnxk_rep_dev_configure(struct rte_eth_dev *ethdev)
 	struct rte_eth_dev_data *ethdev_data = ethdev->data;
 	int rc = -1;
 
-	rc = rep_eth_conf_chk(&ethdev_data->dev_conf, ethdev_data->nb_rx_queues);
+	rc = rep_eth_conf_chk(&ethdev_data->dev_conf);
 	if (rc)
 		goto fail;
 
diff --git a/drivers/net/intel/cpfl/cpfl_ethdev.c b/drivers/net/intel/cpfl/cpfl_ethdev.c
index c235373daf..57a46b0ecc 100644
--- a/drivers/net/intel/cpfl/cpfl_ethdev.c
+++ b/drivers/net/intel/cpfl/cpfl_ethdev.c
@@ -752,9 +752,6 @@ cpfl_dev_configure(struct rte_eth_dev *dev)
 			PMD_INIT_LOG(ERR, "Failed to init rss");
 			return ret;
 		}
-	} else if (conf->rxmode.mq_mode == RTE_ETH_MQ_RX_RSS) {
-		PMD_INIT_LOG(ERR, "RSS is not supported.");
-		return -ENOTSUP;
 	}
 
 	vport->max_pkt_len =
diff --git a/drivers/net/nfp/nfp_net_common.c b/drivers/net/nfp/nfp_net_common.c
index afa0bc0faf..f9957086d2 100644
--- a/drivers/net/nfp/nfp_net_common.c
+++ b/drivers/net/nfp/nfp_net_common.c
@@ -373,13 +373,6 @@ nfp_net_configure(struct rte_eth_dev *dev)
 		return -EINVAL;
 	}
 
-	/* Checking RX mode */
-	if ((rxmode->mq_mode & RTE_ETH_MQ_RX_RSS_FLAG) != 0 &&
-			(hw->super.cap & NFP_NET_CFG_CTRL_RSS_ANY) == 0) {
-		PMD_DRV_LOG(ERR, "RSS not supported.");
-		return -EINVAL;
-	}
-
 	/* Checking MTU set */
 	if (rxmode->mtu > hw->max_mtu + NFP_ETH_OVERHEAD) {
 		PMD_DRV_LOG(ERR, "MTU (%u) larger than the maximum possible frame size (%u).",
diff --git a/drivers/net/octeontx/octeontx_ethdev.c b/drivers/net/octeontx/octeontx_ethdev.c
index e173535d29..e0df23049c 100644
--- a/drivers/net/octeontx/octeontx_ethdev.c
+++ b/drivers/net/octeontx/octeontx_ethdev.c
@@ -499,8 +499,7 @@ octeontx_dev_configure(struct rte_eth_dev *dev)
 		return -EINVAL;
 	}
 
-	if (rxmode->mq_mode != RTE_ETH_MQ_RX_NONE &&
-		rxmode->mq_mode != RTE_ETH_MQ_RX_RSS) {
+	if (rxmode->mq_mode != RTE_ETH_MQ_RX_NONE) {
 		octeontx_log_err("unsupported rx qmode %d", rxmode->mq_mode);
 		return -EINVAL;
 	}
diff --git a/drivers/net/sfc/sfc_repr.c b/drivers/net/sfc/sfc_repr.c
index 2be17d3c8f..079d02dff1 100644
--- a/drivers/net/sfc/sfc_repr.c
+++ b/drivers/net/sfc/sfc_repr.c
@@ -378,10 +378,8 @@ sfc_repr_dev_stop(struct rte_eth_dev *dev)
 }
 
 static int
-sfc_repr_check_conf(struct sfc_repr *sr, uint16_t nb_rx_queues,
-		    const struct rte_eth_conf *conf)
+sfc_repr_check_conf(struct sfc_repr *sr, const struct rte_eth_conf *conf)
 {
-	const struct rte_eth_rss_conf *rss_conf;
 	int ret = 0;
 
 	sfcr_info(sr, "entry");
@@ -392,25 +390,10 @@ sfc_repr_check_conf(struct sfc_repr *sr, uint16_t nb_rx_queues,
 	}
 
 	switch (conf->rxmode.mq_mode) {
-	case RTE_ETH_MQ_RX_RSS:
-		if (nb_rx_queues != 1) {
-			sfcr_err(sr, "Rx RSS is not supported with %u queues",
-				 nb_rx_queues);
-			ret = -EINVAL;
-			break;
-		}
-
-		rss_conf = &conf->rx_adv_conf.rss_conf;
-		if (rss_conf->rss_key != NULL || rss_conf->rss_key_len != 0 ||
-		    rss_conf->rss_hf != 0) {
-			sfcr_err(sr, "Rx RSS configuration is not supported");
-			ret = -EINVAL;
-		}
-		break;
 	case RTE_ETH_MQ_RX_NONE:
 		break;
 	default:
-		sfcr_err(sr, "Rx mode MQ modes other than RSS not supported");
+		sfcr_err(sr, "Rx mode MQ modes other than none not supported");
 		ret = -EINVAL;
 		break;
 	}
@@ -452,8 +435,7 @@ sfc_repr_check_conf(struct sfc_repr *sr, uint16_t nb_rx_queues,
 
 
 static int
-sfc_repr_configure(struct sfc_repr *sr, uint16_t nb_rx_queues,
-		   const struct rte_eth_conf *conf)
+sfc_repr_configure(struct sfc_repr *sr, const struct rte_eth_conf *conf)
 {
 	int ret;
 
@@ -461,7 +443,7 @@ sfc_repr_configure(struct sfc_repr *sr, uint16_t nb_rx_queues,
 
 	SFC_ASSERT(sfc_repr_lock_is_locked(sr));
 
-	ret = sfc_repr_check_conf(sr, nb_rx_queues, conf);
+	ret = sfc_repr_check_conf(sr, conf);
 	if (ret != 0)
 		goto fail_check_conf;
 
@@ -491,8 +473,7 @@ sfc_repr_dev_configure(struct rte_eth_dev *dev)
 	case SFC_ETHDEV_CONFIGURED:
 		/* FALLTHROUGH */
 	case SFC_ETHDEV_INITIALIZED:
-		ret = sfc_repr_configure(sr, dev_data->nb_rx_queues,
-					 &dev_data->dev_conf);
+		ret = sfc_repr_configure(sr, &dev_data->dev_conf);
 		break;
 	default:
 		sfcr_err(sr, "unexpected adapter state %u to configure",
diff --git a/drivers/net/sfc/sfc_rx.c b/drivers/net/sfc/sfc_rx.c
index 1d4101b9e9..aa59931f06 100644
--- a/drivers/net/sfc/sfc_rx.c
+++ b/drivers/net/sfc/sfc_rx.c
@@ -1668,21 +1668,14 @@ sfc_rx_qinit_info(struct sfc_adapter *sa, sfc_sw_index_t sw_index,
 static int
 sfc_rx_check_mode(struct sfc_adapter *sa, struct rte_eth_rxmode *rxmode)
 {
-	struct sfc_adapter_shared * const sas = sfc_sa2shared(sa);
 	uint64_t offloads_supported = sfc_rx_get_dev_offload_caps(sa) |
 				      sfc_rx_get_queue_offload_caps(sa);
-	struct sfc_rss *rss = &sas->rss;
 	int rc = 0;
 
 	switch (rxmode->mq_mode) {
 	case RTE_ETH_MQ_RX_NONE:
-		/* No special checks are required */
-		break;
 	case RTE_ETH_MQ_RX_RSS:
-		if (rss->context_type == EFX_RX_SCALE_UNAVAILABLE) {
-			sfc_err(sa, "RSS is not available");
-			rc = EINVAL;
-		}
+		/* No special checks are required */
 		break;
 	default:
 		sfc_err(sa, "Rx multi-queue mode %u not supported",
diff --git a/examples/distributor/main.c b/examples/distributor/main.c
index 0905482cf0..344da03814 100644
--- a/examples/distributor/main.c
+++ b/examples/distributor/main.c
@@ -135,6 +135,8 @@ port_init(uint16_t port, struct rte_mempool *mbuf_pool)
 
 	port_conf.rx_adv_conf.rss_conf.rss_hf &=
 		dev_info.flow_type_rss_offloads;
+	if (port_conf.rx_adv_conf.rss_conf.rss_hf == 0)
+		port_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE;
 	if (port_conf.rx_adv_conf.rss_conf.rss_hf !=
 			port_conf_default.rx_adv_conf.rss_conf.rss_hf) {
 		printf("Port %u modified RSS hash function based on hardware support,"
diff --git a/examples/dma/dmafwd.c b/examples/dma/dmafwd.c
index 8d195faddb..fea1c3e669 100644
--- a/examples/dma/dmafwd.c
+++ b/examples/dma/dmafwd.c
@@ -922,6 +922,8 @@ port_init(uint16_t portid, struct rte_mempool *mbuf_pool)
 
 	local_port_conf.rx_adv_conf.rss_conf.rss_hf &=
 		dev_info.flow_type_rss_offloads;
+	if (local_port_conf.rx_adv_conf.rss_conf.rss_hf == 0)
+		local_port_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE;
 	ret = rte_eth_dev_configure(portid, nb_queues, 1, &local_port_conf);
 	if (ret < 0)
 		rte_exit(EXIT_FAILURE, "Cannot configure device:"
diff --git a/examples/eventdev_pipeline/pipeline_worker_generic.c b/examples/eventdev_pipeline/pipeline_worker_generic.c
index c0de5b1e11..77d9d91043 100644
--- a/examples/eventdev_pipeline/pipeline_worker_generic.c
+++ b/examples/eventdev_pipeline/pipeline_worker_generic.c
@@ -338,6 +338,8 @@ port_init(uint8_t port, struct rte_mempool *mbuf_pool)
 
 	port_conf.rx_adv_conf.rss_conf.rss_hf &=
 		dev_info.flow_type_rss_offloads;
+	if (port_conf.rx_adv_conf.rss_conf.rss_hf == 0)
+		port_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE;
 	if (port_conf.rx_adv_conf.rss_conf.rss_hf !=
 			port_conf_default.rx_adv_conf.rss_conf.rss_hf) {
 		printf("Port %u modified RSS hash function based on hardware support,"
diff --git a/examples/eventdev_pipeline/pipeline_worker_tx.c b/examples/eventdev_pipeline/pipeline_worker_tx.c
index a3090e3b49..174976a1b5 100644
--- a/examples/eventdev_pipeline/pipeline_worker_tx.c
+++ b/examples/eventdev_pipeline/pipeline_worker_tx.c
@@ -683,6 +683,8 @@ port_init(uint8_t port, struct rte_mempool *mbuf_pool)
 
 	port_conf.rx_adv_conf.rss_conf.rss_hf &=
 		dev_info.flow_type_rss_offloads;
+	if (port_conf.rx_adv_conf.rss_conf.rss_hf == 0)
+		port_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE;
 	if (port_conf.rx_adv_conf.rss_conf.rss_hf !=
 			port_conf_default.rx_adv_conf.rss_conf.rss_hf) {
 		printf("Port %u modified RSS hash function based on hardware support,"
diff --git a/examples/ip_reassembly/main.c b/examples/ip_reassembly/main.c
index 0814d47a66..321a50b1f6 100644
--- a/examples/ip_reassembly/main.c
+++ b/examples/ip_reassembly/main.c
@@ -1102,6 +1102,8 @@ main(int argc, char **argv)
 
 		local_port_conf.rx_adv_conf.rss_conf.rss_hf &=
 			dev_info.flow_type_rss_offloads;
+		if (local_port_conf.rx_adv_conf.rss_conf.rss_hf == 0)
+			local_port_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE;
 		if (local_port_conf.rx_adv_conf.rss_conf.rss_hf !=
 				port_conf.rx_adv_conf.rss_conf.rss_hf) {
 			printf("Port %u modified RSS hash function based on hardware support,"
diff --git a/examples/ipsec-secgw/ipsec-secgw.c b/examples/ipsec-secgw/ipsec-secgw.c
index 4816bcdd82..2741faf04e 100644
--- a/examples/ipsec-secgw/ipsec-secgw.c
+++ b/examples/ipsec-secgw/ipsec-secgw.c
@@ -2016,6 +2016,8 @@ port_init(uint16_t portid, uint64_t req_rx_offloads, uint64_t req_tx_offloads,
 
 	local_port_conf.rx_adv_conf.rss_conf.rss_hf &=
 		dev_info.flow_type_rss_offloads;
+	if (local_port_conf.rx_adv_conf.rss_conf.rss_hf == 0)
+		local_port_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE;
 	if (local_port_conf.rx_adv_conf.rss_conf.rss_hf !=
 			port_conf.rx_adv_conf.rss_conf.rss_hf) {
 		printf("Port %u modified RSS hash function based on hardware support,"
diff --git a/examples/l2fwd-event/l2fwd_common.c b/examples/l2fwd-event/l2fwd_common.c
index b4d5edfde0..caacf6cd63 100644
--- a/examples/l2fwd-event/l2fwd_common.c
+++ b/examples/l2fwd-event/l2fwd_common.c
@@ -48,6 +48,8 @@ l2fwd_event_init_ports(struct l2fwd_resources *rsrc)
 				  port_id, strerror(-ret));
 		local_port_conf.rx_adv_conf.rss_conf.rss_hf &=
 			dev_info.flow_type_rss_offloads;
+		if (local_port_conf.rx_adv_conf.rss_conf.rss_hf == 0)
+			local_port_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE;
 		if (local_port_conf.rx_adv_conf.rss_conf.rss_hf !=
 				port_conf.rx_adv_conf.rss_conf.rss_hf) {
 			printf("Port %u modified RSS hash function based on hardware support,"
diff --git a/examples/l3fwd-graph/main.c b/examples/l3fwd-graph/main.c
index 4fa302f5b0..08fe177fc2 100644
--- a/examples/l3fwd-graph/main.c
+++ b/examples/l3fwd-graph/main.c
@@ -1092,6 +1092,8 @@ main(int argc, char **argv)
 
 		local_port_conf.rx_adv_conf.rss_conf.rss_hf &=
 			dev_info.flow_type_rss_offloads;
+		if (local_port_conf.rx_adv_conf.rss_conf.rss_hf == 0)
+			local_port_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE;
 		if (local_port_conf.rx_adv_conf.rss_conf.rss_hf !=
 		    port_conf.rx_adv_conf.rss_conf.rss_hf) {
 			printf("Port %u modified RSS hash function based on "
diff --git a/examples/l3fwd/main.c b/examples/l3fwd/main.c
index 6866811526..9532150a47 100644
--- a/examples/l3fwd/main.c
+++ b/examples/l3fwd/main.c
@@ -1394,7 +1394,8 @@ l3fwd_poll_resource_setup(void)
 		local_port_conf.rx_adv_conf.rss_conf.rss_hf &=
 			dev_info.flow_type_rss_offloads;
 
-		if (disable_rss == 1 || dev_info.max_rx_queues == 1)
+		if (disable_rss == 1 || dev_info.max_rx_queues == 1 ||
+				local_port_conf.rx_adv_conf.rss_conf.rss_hf == 0)
 			local_port_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE;
 
 		if (local_port_conf.rx_adv_conf.rss_conf.rss_hf !=
diff --git a/examples/multi_process/client_server_mp/mp_server/init.c b/examples/multi_process/client_server_mp/mp_server/init.c
index f3b9b49380..09cb363ab8 100644
--- a/examples/multi_process/client_server_mp/mp_server/init.c
+++ b/examples/multi_process/client_server_mp/mp_server/init.c
@@ -91,7 +91,7 @@ static int
 init_port(uint16_t port_num)
 {
 	/* for port configuration all features are off by default */
-	const struct rte_eth_conf port_conf = {
+	struct rte_eth_conf port_conf = {
 		.rxmode = {
 			.mq_mode = RTE_ETH_MQ_RX_RSS
 		}
@@ -99,6 +99,7 @@ init_port(uint16_t port_num)
 	const uint16_t rx_rings = 1, tx_rings = num_clients;
 	uint16_t rx_ring_size = RTE_MP_RX_DESC_DEFAULT;
 	uint16_t tx_ring_size = RTE_MP_TX_DESC_DEFAULT;
+	struct rte_eth_dev_info dev_info;
 
 	uint16_t q;
 	int retval;
@@ -106,6 +107,13 @@ init_port(uint16_t port_num)
 	printf("Port %u init ... ", port_num);
 	fflush(stdout);
 
+	retval = rte_eth_dev_info_get(port_num, &dev_info);
+	if (retval != 0)
+		return retval;
+
+	if (dev_info.flow_type_rss_offloads == 0)
+		port_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE;
+
 	/* Standard DPDK port initialisation - config port, then set up
 	 * rx and tx rings */
 	if ((retval = rte_eth_dev_configure(port_num, rx_rings, tx_rings,
diff --git a/examples/multi_process/symmetric_mp/main.c b/examples/multi_process/symmetric_mp/main.c
index e2d185ab1b..d250a738f8 100644
--- a/examples/multi_process/symmetric_mp/main.c
+++ b/examples/multi_process/symmetric_mp/main.c
@@ -228,6 +228,8 @@ smp_port_init(uint16_t port, struct rte_mempool *mbuf_pool,
 
 	rss_hf_tmp = port_conf.rx_adv_conf.rss_conf.rss_hf;
 	port_conf.rx_adv_conf.rss_conf.rss_hf &= info.flow_type_rss_offloads;
+	if (port_conf.rx_adv_conf.rss_conf.rss_hf == 0)
+		port_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE;
 	if (port_conf.rx_adv_conf.rss_conf.rss_hf != rss_hf_tmp) {
 		printf("Port %u modified RSS hash function based on hardware support,"
 			"requested:%#"PRIx64" configured:%#"PRIx64"\n",
diff --git a/examples/ntb/ntb_fwd.c b/examples/ntb/ntb_fwd.c
index bbacce97db..30716d427d 100644
--- a/examples/ntb/ntb_fwd.c
+++ b/examples/ntb/ntb_fwd.c
@@ -1310,6 +1310,8 @@ main(int argc, char **argv)
 
 		eth_pconf.rx_adv_conf.rss_conf.rss_hf &=
 				ethdev_info.flow_type_rss_offloads;
+		if (eth_pconf.rx_adv_conf.rss_conf.rss_hf == 0)
+			eth_pconf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE;
 		ret = rte_eth_dev_configure(eth_port_id, num_queues,
 					    num_queues, &eth_pconf);
 		if (ret)
diff --git a/examples/pipeline/obj.c b/examples/pipeline/obj.c
index d39034ec22..9f49df190e 100644
--- a/examples/pipeline/obj.c
+++ b/examples/pipeline/obj.c
@@ -118,8 +118,11 @@ ethdev_config(const char *name, struct ethdev_params *params)
 	if (rss) {
 		uint64_t rss_hf = RTE_ETH_RSS_IP | RTE_ETH_RSS_TCP | RTE_ETH_RSS_UDP;
 
-		port_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_RSS;
-		port_conf.rx_adv_conf.rss_conf.rss_hf = rss_hf & port_info.flow_type_rss_offloads;
+		rss_hf &= port_info.flow_type_rss_offloads;
+		if (rss_hf != 0) {
+			port_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_RSS;
+			port_conf.rx_adv_conf.rss_conf.rss_hf = rss_hf;
+		}
 	}
 
 	numa_node = rte_eth_dev_socket_id(port_id);
diff --git a/examples/qos_meter/main.c b/examples/qos_meter/main.c
index da1b0b2287..59759355cd 100644
--- a/examples/qos_meter/main.c
+++ b/examples/qos_meter/main.c
@@ -336,6 +336,8 @@ main(int argc, char **argv)
 		conf.txmode.offloads |= RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE;
 
 	conf.rx_adv_conf.rss_conf.rss_hf &= dev_info.flow_type_rss_offloads;
+	if (conf.rx_adv_conf.rss_conf.rss_hf == 0)
+		conf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE;
 	if (conf.rx_adv_conf.rss_conf.rss_hf !=
 			port_conf.rx_adv_conf.rss_conf.rss_hf) {
 		printf("Port %u modified RSS hash function based on hardware support,"
@@ -382,6 +384,8 @@ main(int argc, char **argv)
 		conf.txmode.offloads |= RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE;
 
 	conf.rx_adv_conf.rss_conf.rss_hf &= dev_info.flow_type_rss_offloads;
+	if (conf.rx_adv_conf.rss_conf.rss_hf == 0)
+		conf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE;
 	if (conf.rx_adv_conf.rss_conf.rss_hf !=
 			port_conf.rx_adv_conf.rss_conf.rss_hf) {
 		printf("Port %u modified RSS hash function based on hardware support,"
diff --git a/examples/server_node_efd/efd_server/init.c b/examples/server_node_efd/efd_server/init.c
index 9a20831a0d..9644627219 100644
--- a/examples/server_node_efd/efd_server/init.c
+++ b/examples/server_node_efd/efd_server/init.c
@@ -118,6 +118,9 @@ init_port(uint16_t port_num)
 		port_conf.txmode.offloads |=
 			RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE;
 
+	if (dev_info.flow_type_rss_offloads == 0)
+		port_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE;
+
 	/*
 	 * Standard DPDK port initialisation - config port, then set up
 	 * rx and tx rings.
diff --git a/lib/ethdev/rte_ethdev.c b/lib/ethdev/rte_ethdev.c
index 39a895c9e4..0988f69275 100644
--- a/lib/ethdev/rte_ethdev.c
+++ b/lib/ethdev/rte_ethdev.c
@@ -1526,6 +1526,19 @@ rte_eth_dev_configure(uint16_t port_id, uint16_t nb_rx_q, uint16_t nb_tx_q,
 		goto rollback;
 	}
 
+	if (dev_info.flow_type_rss_offloads == 0 &&
+			(dev_conf->rxmode.mq_mode & RTE_ETH_MQ_RX_RSS_FLAG) != 0) {
+		if (nb_rx_q > 1) {
+			RTE_ETHDEV_LOG_LINE(ERR, "Ethdev port_id=%u does not support RSS rx mode",
+				port_id);
+			ret = -EINVAL;
+			goto rollback;
+		}
+		RTE_ETHDEV_LOG_LINE(NOTICE, "Ethdev port_id=%u does not support RSS rx mode, ignoring",
+			port_id);
+		dev->data->dev_conf.rxmode.mq_mode &= ~RTE_ETH_MQ_RX_RSS_FLAG;
+	}
+
 	dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf =
 		rte_eth_rss_hf_refine(dev_conf->rx_adv_conf.rss_conf.rss_hf);
 
-- 
2.54.0

Re: [PATCH v3 12/13] ethdev: check RSS availability

[fengchengwen]

Acked-by: Chengwen Feng <fengchengwen@huawei.com>

On 10/23/2026 1:44 AM, David Marchand wrote:
> Add RSS capability check in rte_eth_dev_configure() using
> dev_info.flow_type_rss_offloads.
> 
> When zero, reject Rx modes with RTE_ETH_MQ_RX_RSS_FLAG
> unless only one queue was requested.
> 
> If a driver does not advertise RSS, don't request it in test
> applications or examples, as role model citizens.
> 
> Remove redundant RSS checks from drivers.
> 
> Signed-off-by: David Marchand <david.marchand@redhat.com>

[PATCH v3 13/13] ethdev: check unknown Rx/Tx multi-queue modes

[David Marchand]

Add validation in rte_eth_dev_configure() to reject invalid multi-queue
mode values early, before passing them to drivers.
If we do not enforce valid values are passed by an application,
this application might face issues in the future when we add more modes.

For Rx mq_mode, reject any bits outside the defined RSS, DCB, and VMDq
flags.
For Tx mq_mode, reject values greater than RTE_ETH_MQ_TX_VMDQ_ONLY.

Thanks to this, many drivers can stop caring about unexpected modes.

Signed-off-by: David Marchand <david.marchand@redhat.com>
---
Changes since v1:
- updated axgbe, igc, thunderx, 

---
 doc/guides/rel_notes/release_26_11.rst |  1 +
 drivers/net/axgbe/axgbe_ethdev.c       | 21 ++-------------------
 drivers/net/bnxt/bnxt_rxq.c            | 14 ++------------
 drivers/net/cnxk/cnxk_ethdev.c         | 11 -----------
 drivers/net/cnxk/cnxk_rep_ops.c        | 14 --------------
 drivers/net/intel/cpfl/cpfl_ethdev.c   | 13 -------------
 drivers/net/intel/e1000/igb_ethdev.c   | 15 +--------------
 drivers/net/intel/e1000/igc_ethdev.c   | 19 -------------------
 drivers/net/intel/e1000/igc_txrx.c     | 19 +++----------------
 drivers/net/intel/idpf/idpf_ethdev.c   |  6 ------
 drivers/net/mvneta/mvneta_ethdev.c     |  7 -------
 drivers/net/mvpp2/mrvl_ethdev.c        |  7 -------
 drivers/net/nbl/nbl_dev/nbl_dev.c      |  6 ------
 drivers/net/nfp/nfp_net_common.c       |  8 --------
 drivers/net/octeontx/octeontx_ethdev.c | 10 ----------
 drivers/net/qede/qede_ethdev.c         |  5 -----
 drivers/net/sfc/sfc_repr.c             | 14 --------------
 drivers/net/sfc/sfc_rx.c               | 22 ++--------------------
 drivers/net/sfc/sfc_tx.c               |  9 ---------
 drivers/net/thunderx/nicvf_ethdev.c    | 20 ++++----------------
 drivers/net/virtio/virtio_ethdev.c     | 14 --------------
 drivers/net/zxdh/zxdh_ethdev.c         | 19 -------------------
 lib/ethdev/rte_ethdev.c                | 17 +++++++++++++++++
 23 files changed, 32 insertions(+), 259 deletions(-)

diff --git a/doc/guides/rel_notes/release_26_11.rst b/doc/guides/rel_notes/release_26_11.rst
index caffd2a611..4c00f51d89 100644
--- a/doc/guides/rel_notes/release_26_11.rst
+++ b/doc/guides/rel_notes/release_26_11.rst
@@ -433,6 +433,7 @@ API Changes
   * VMDq modes (Rx ``RTE_ETH_MQ_RX_VMDQ_FLAG``,
     Tx ``RTE_ETH_MQ_TX_VMDQ_DCB``/``RTE_ETH_MQ_TX_VMDQ_ONLY``) are rejected
     if the driver reports no VMDq pool.
+  * Unknown Rx and Tx modes are rejected.
 
 * ethdev: Updated VMDq related API.
 
diff --git a/drivers/net/axgbe/axgbe_ethdev.c b/drivers/net/axgbe/axgbe_ethdev.c
index 93e198ba95..2411e74d97 100644
--- a/drivers/net/axgbe/axgbe_ethdev.c
+++ b/drivers/net/axgbe/axgbe_ethdev.c
@@ -353,20 +353,6 @@ axgbe_dev_configure(struct rte_eth_dev *dev)
 	return 0;
 }
 
-static int
-axgbe_dev_rx_mq_config(struct rte_eth_dev *dev)
-{
-	struct axgbe_port *pdata = dev->data->dev_private;
-
-	if (dev->data->dev_conf.rxmode.mq_mode == RTE_ETH_MQ_RX_RSS)
-		pdata->rss_enable = 1;
-	else if (dev->data->dev_conf.rxmode.mq_mode == RTE_ETH_MQ_RX_NONE)
-		pdata->rss_enable = 0;
-	else
-		return  -1;
-	return 0;
-}
-
 static int
 axgbe_dev_start(struct rte_eth_dev *dev)
 {
@@ -379,11 +365,8 @@ axgbe_dev_start(struct rte_eth_dev *dev)
 	PMD_INIT_FUNC_TRACE();
 
 	/* Multiqueue RSS */
-	ret = axgbe_dev_rx_mq_config(dev);
-	if (ret) {
-		PMD_DRV_LOG_LINE(ERR, "Unable to config RX MQ");
-		return ret;
-	}
+	pdata->rss_enable = dev->data->dev_conf.rxmode.mq_mode == RTE_ETH_MQ_RX_RSS;
+
 	ret = axgbe_phy_reset(pdata);
 	if (ret) {
 		PMD_DRV_LOG_LINE(ERR, "phy reset failed");
diff --git a/drivers/net/bnxt/bnxt_rxq.c b/drivers/net/bnxt/bnxt_rxq.c
index 9743296b39..11115db1fd 100644
--- a/drivers/net/bnxt/bnxt_rxq.c
+++ b/drivers/net/bnxt/bnxt_rxq.c
@@ -85,18 +85,8 @@ int bnxt_mq_rx_configure(struct bnxt *bp)
 
 	bp->nr_vnics = 0;
 
-	/* Multi-queue mode */
-	switch (dev_conf->rxmode.mq_mode) {
-	case RTE_ETH_MQ_RX_NONE:
-	case RTE_ETH_MQ_RX_RSS:
-		pools = bp->rx_cosq_cnt ? bp->rx_cosq_cnt : pools;
-		break;
-	default:
-		PMD_DRV_LOG_LINE(ERR, "Unsupported mq_mode %d",
-				 dev_conf->rxmode.mq_mode);
-		return -EINVAL;
-	}
-
+	if (bp->rx_cosq_cnt)
+		pools = bp->rx_cosq_cnt;
 	pools = RTE_MIN(pools, bp->rx_cp_nr_rings);
 	nb_q_per_grp = bp->rx_cp_nr_rings / pools;
 	PMD_DRV_LOG_LINE(DEBUG, "pools = %u nb_q_per_grp = %u",
diff --git a/drivers/net/cnxk/cnxk_ethdev.c b/drivers/net/cnxk/cnxk_ethdev.c
index 9a4da870cd..0bd0302d6a 100644
--- a/drivers/net/cnxk/cnxk_ethdev.c
+++ b/drivers/net/cnxk/cnxk_ethdev.c
@@ -1485,17 +1485,6 @@ cnxk_nix_configure(struct rte_eth_dev *eth_dev)
 		goto fail_configure;
 	}
 
-	if (rxmode->mq_mode != RTE_ETH_MQ_RX_NONE &&
-	    rxmode->mq_mode != RTE_ETH_MQ_RX_RSS) {
-		plt_err("Unsupported mq rx mode %d", rxmode->mq_mode);
-		goto fail_configure;
-	}
-
-	if (txmode->mq_mode != RTE_ETH_MQ_TX_NONE) {
-		plt_err("Unsupported mq tx mode %d", txmode->mq_mode);
-		goto fail_configure;
-	}
-
 	/* Free the resources allocated from the previous configure */
 	if (dev->configured == 1) {
 		/* Unregister queue irq's */
diff --git a/drivers/net/cnxk/cnxk_rep_ops.c b/drivers/net/cnxk/cnxk_rep_ops.c
index d472cc4b08..d4f260af20 100644
--- a/drivers/net/cnxk/cnxk_rep_ops.c
+++ b/drivers/net/cnxk/cnxk_rep_ops.c
@@ -142,20 +142,6 @@ rep_eth_conf_chk(const struct rte_eth_conf *conf)
 		ret = -EINVAL;
 	}
 
-	switch (conf->rxmode.mq_mode) {
-	case RTE_ETH_MQ_RX_NONE:
-		break;
-	default:
-		plt_err("Rx mode MQ modes other than none not supported");
-		ret = -EINVAL;
-		break;
-	}
-
-	if (conf->txmode.mq_mode != RTE_ETH_MQ_TX_NONE) {
-		plt_err("Tx mode MQ modes not supported");
-		ret = -EINVAL;
-	}
-
 	if (conf->lpbk_mode != 0) {
 		plt_err("loopback not supported");
 		ret = -EINVAL;
diff --git a/drivers/net/intel/cpfl/cpfl_ethdev.c b/drivers/net/intel/cpfl/cpfl_ethdev.c
index 57a46b0ecc..1667ff69a4 100644
--- a/drivers/net/intel/cpfl/cpfl_ethdev.c
+++ b/drivers/net/intel/cpfl/cpfl_ethdev.c
@@ -707,12 +707,6 @@ cpfl_dev_configure(struct rte_eth_dev *dev)
 		return -ENOTSUP;
 	}
 
-	if (conf->txmode.mq_mode != RTE_ETH_MQ_TX_NONE) {
-		PMD_INIT_LOG(ERR, "Multi-queue TX mode %d is not supported",
-			     conf->txmode.mq_mode);
-		return -ENOTSUP;
-	}
-
 	if (conf->lpbk_mode != 0) {
 		PMD_INIT_LOG(ERR, "Loopback operation mode %d is not supported",
 			     conf->lpbk_mode);
@@ -739,13 +733,6 @@ cpfl_dev_configure(struct rte_eth_dev *dev)
 		return -ENOTSUP;
 	}
 
-	if (conf->rxmode.mq_mode != RTE_ETH_MQ_RX_RSS &&
-	    conf->rxmode.mq_mode != RTE_ETH_MQ_RX_NONE) {
-		PMD_INIT_LOG(ERR, "RX mode %d is not supported.",
-			     conf->rxmode.mq_mode);
-		return -EINVAL;
-	}
-
 	if (base->caps.rss_caps != 0 && dev->data->nb_rx_queues != 0) {
 		ret = cpfl_init_rss(vport);
 		if (ret != 0) {
diff --git a/drivers/net/intel/e1000/igb_ethdev.c b/drivers/net/intel/e1000/igb_ethdev.c
index 181af58169..c65a468b26 100644
--- a/drivers/net/intel/e1000/igb_ethdev.c
+++ b/drivers/net/intel/e1000/igb_ethdev.c
@@ -1179,25 +1179,12 @@ igb_check_mq_mode(struct rte_eth_dev *dev)
 			return -EINVAL;
 		}
 	} else {
-		/* To no break software that set invalid mode, only display
-		 * warning if invalid mode is used.
-		 */
-		if (rx_mq_mode != RTE_ETH_MQ_RX_NONE &&
-		    rx_mq_mode != RTE_ETH_MQ_RX_VMDQ_ONLY &&
-		    rx_mq_mode != RTE_ETH_MQ_RX_RSS) {
+		if (rx_mq_mode == RTE_ETH_MQ_RX_VMDQ_RSS) {
 			/* RSS together with VMDq not supported*/
 			PMD_INIT_LOG(ERR, "RX mode %d is not supported.",
 				     rx_mq_mode);
 			return -EINVAL;
 		}
-
-		if (tx_mq_mode != RTE_ETH_MQ_TX_NONE &&
-		    tx_mq_mode != RTE_ETH_MQ_TX_VMDQ_ONLY) {
-			PMD_INIT_LOG(WARNING, "TX mode %d is not supported."
-					" Due to txmode is meaningless in this"
-					" driver, just ignore.",
-					tx_mq_mode);
-		}
 	}
 	return 0;
 }
diff --git a/drivers/net/intel/e1000/igc_ethdev.c b/drivers/net/intel/e1000/igc_ethdev.c
index 73dd5dd1a3..2c8ff57e6b 100644
--- a/drivers/net/intel/e1000/igc_ethdev.c
+++ b/drivers/net/intel/e1000/igc_ethdev.c
@@ -344,30 +344,11 @@ static const struct eth_dev_ops eth_igc_ops = {
 static int
 igc_check_mq_mode(struct rte_eth_dev *dev)
 {
-	enum rte_eth_rx_mq_mode rx_mq_mode = dev->data->dev_conf.rxmode.mq_mode;
-	enum rte_eth_tx_mq_mode tx_mq_mode = dev->data->dev_conf.txmode.mq_mode;
-
 	if (RTE_ETH_DEV_SRIOV(dev).active != 0) {
 		PMD_INIT_LOG(ERR, "SRIOV is not supported.");
 		return -EINVAL;
 	}
 
-	if (rx_mq_mode != RTE_ETH_MQ_RX_NONE &&
-		rx_mq_mode != RTE_ETH_MQ_RX_RSS) {
-		/* RSS together with VMDq not supported*/
-		PMD_INIT_LOG(ERR, "RX mode %d is not supported.",
-				rx_mq_mode);
-		return -EINVAL;
-	}
-
-	/* To no break software that set invalid mode, only display
-	 * warning if invalid mode is used.
-	 */
-	if (tx_mq_mode != RTE_ETH_MQ_TX_NONE)
-		PMD_INIT_LOG(WARNING,
-			"TX mode %d is not supported. Due to meaningless in this driver, just ignore",
-			tx_mq_mode);
-
 	return 0;
 }
 
diff --git a/drivers/net/intel/e1000/igc_txrx.c b/drivers/net/intel/e1000/igc_txrx.c
index d61fdb33a8..dca66c3c2c 100644
--- a/drivers/net/intel/e1000/igc_txrx.c
+++ b/drivers/net/intel/e1000/igc_txrx.c
@@ -991,23 +991,10 @@ igc_dev_mq_rx_configure(struct rte_eth_dev *dev)
 		return -EINVAL;
 	}
 
-	switch (dev->data->dev_conf.rxmode.mq_mode) {
-	case RTE_ETH_MQ_RX_RSS:
-		igc_rss_configure(dev);
-		break;
-	case RTE_ETH_MQ_RX_NONE:
-		/*
-		 * configure RSS register for following,
-		 * then disable the RSS logic
-		 */
-		igc_rss_configure(dev);
+	igc_rss_configure(dev);
+	if (dev->data->dev_conf.rxmode.mq_mode != RTE_ETH_MQ_RX_RSS)
 		igc_rss_disable(dev);
-		break;
-	default:
-		PMD_DRV_LOG(ERR, "rx mode(%d) not supported!",
-			dev->data->dev_conf.rxmode.mq_mode);
-		return -EINVAL;
-	}
+
 	return 0;
 }
 
diff --git a/drivers/net/intel/idpf/idpf_ethdev.c b/drivers/net/intel/idpf/idpf_ethdev.c
index fbd50d0a91..0b645206e7 100644
--- a/drivers/net/intel/idpf/idpf_ethdev.c
+++ b/drivers/net/intel/idpf/idpf_ethdev.c
@@ -650,12 +650,6 @@ idpf_dev_configure(struct rte_eth_dev *dev)
 		return -ENOTSUP;
 	}
 
-	if (conf->txmode.mq_mode != RTE_ETH_MQ_TX_NONE) {
-		PMD_INIT_LOG(ERR, "Multi-queue TX mode %d is not supported",
-			     conf->txmode.mq_mode);
-		return -ENOTSUP;
-	}
-
 	if (conf->lpbk_mode != 0) {
 		PMD_INIT_LOG(ERR, "Loopback operation mode %d is not supported",
 			     conf->lpbk_mode);
diff --git a/drivers/net/mvneta/mvneta_ethdev.c b/drivers/net/mvneta/mvneta_ethdev.c
index eef9758224..975d3da81e 100644
--- a/drivers/net/mvneta/mvneta_ethdev.c
+++ b/drivers/net/mvneta/mvneta_ethdev.c
@@ -120,13 +120,6 @@ mvneta_dev_configure(struct rte_eth_dev *dev)
 	struct mvneta_priv *priv = dev->data->dev_private;
 	struct neta_ppio_params *ppio_params;
 
-	if (dev->data->dev_conf.rxmode.mq_mode != RTE_ETH_MQ_RX_NONE) {
-		MVNETA_LOG(INFO, "Unsupported RSS and rx multi queue mode %d",
-			dev->data->dev_conf.rxmode.mq_mode);
-		if (dev->data->nb_rx_queues > 1)
-			return -EINVAL;
-	}
-
 	if (dev->data->dev_conf.txmode.offloads & RTE_ETH_TX_OFFLOAD_MULTI_SEGS)
 		priv->multiseg = 1;
 
diff --git a/drivers/net/mvpp2/mrvl_ethdev.c b/drivers/net/mvpp2/mrvl_ethdev.c
index 2df3a77e7f..9be3e5a92d 100644
--- a/drivers/net/mvpp2/mrvl_ethdev.c
+++ b/drivers/net/mvpp2/mrvl_ethdev.c
@@ -483,13 +483,6 @@ mrvl_dev_configure(struct rte_eth_dev *dev)
 		return -EINVAL;
 	}
 
-	if (dev->data->dev_conf.rxmode.mq_mode != RTE_ETH_MQ_RX_NONE &&
-	    dev->data->dev_conf.rxmode.mq_mode != RTE_ETH_MQ_RX_RSS) {
-		MRVL_LOG(INFO, "Unsupported rx multi queue mode %d",
-			dev->data->dev_conf.rxmode.mq_mode);
-		return -EINVAL;
-	}
-
 	if (dev->data->dev_conf.rxmode.mtu > priv->max_mtu) {
 		MRVL_LOG(ERR, "MTU %u is larger than max_mtu %u",
 			 dev->data->dev_conf.rxmode.mtu,
diff --git a/drivers/net/nbl/nbl_dev/nbl_dev.c b/drivers/net/nbl/nbl_dev/nbl_dev.c
index e41732ccd3..d28eea082f 100644
--- a/drivers/net/nbl/nbl_dev/nbl_dev.c
+++ b/drivers/net/nbl/nbl_dev/nbl_dev.c
@@ -14,7 +14,6 @@ static int nbl_dev_port_configure(struct nbl_adapter *adapter)
 int nbl_dev_configure(struct rte_eth_dev *eth_dev)
 {
 	struct rte_eth_dev_data *dev_data = eth_dev->data;
-	enum rte_eth_rx_mq_mode rx_mq_mode = eth_dev->data->dev_conf.rxmode.mq_mode;
 	struct nbl_adapter *adapter = ETH_DEV_TO_NBL_DEV_PF_PRIV(eth_dev);
 	int ret;
 
@@ -23,11 +22,6 @@ int nbl_dev_configure(struct rte_eth_dev *eth_dev)
 
 	NBL_LOG(DEBUG, "Begin to configure the device, state: %d", adapter->state);
 
-	if (rx_mq_mode != RTE_ETH_MQ_RX_NONE && rx_mq_mode != RTE_ETH_MQ_RX_RSS) {
-		NBL_LOG(ERR, "Rx mq mode %d is not supported", rx_mq_mode);
-		return -ENOTSUP;
-	}
-
 	dev_data->dev_conf.intr_conf.lsc = 0;
 
 	switch (adapter->state) {
diff --git a/drivers/net/nfp/nfp_net_common.c b/drivers/net/nfp/nfp_net_common.c
index f9957086d2..97841c00b5 100644
--- a/drivers/net/nfp/nfp_net_common.c
+++ b/drivers/net/nfp/nfp_net_common.c
@@ -357,22 +357,14 @@ nfp_net_configure(struct rte_eth_dev *dev)
 	struct nfp_net_hw *hw;
 	struct rte_eth_conf *dev_conf;
 	struct rte_eth_rxmode *rxmode;
-	struct rte_eth_txmode *txmode;
 
 	hw = nfp_net_get_hw(dev);
 	dev_conf = &dev->data->dev_conf;
 	rxmode = &dev_conf->rxmode;
-	txmode = &dev_conf->txmode;
 
 	if ((rxmode->mq_mode & RTE_ETH_MQ_RX_RSS_FLAG) != 0)
 		rxmode->offloads |= RTE_ETH_RX_OFFLOAD_RSS_HASH;
 
-	/* Checking TX mode */
-	if (txmode->mq_mode != RTE_ETH_MQ_TX_NONE) {
-		PMD_DRV_LOG(ERR, "TX mq_mode DCB and VMDq not supported.");
-		return -EINVAL;
-	}
-
 	/* Checking MTU set */
 	if (rxmode->mtu > hw->max_mtu + NFP_ETH_OVERHEAD) {
 		PMD_DRV_LOG(ERR, "MTU (%u) larger than the maximum possible frame size (%u).",
diff --git a/drivers/net/octeontx/octeontx_ethdev.c b/drivers/net/octeontx/octeontx_ethdev.c
index e0df23049c..bde4c2c615 100644
--- a/drivers/net/octeontx/octeontx_ethdev.c
+++ b/drivers/net/octeontx/octeontx_ethdev.c
@@ -494,16 +494,6 @@ octeontx_dev_configure(struct rte_eth_dev *dev)
 		return -EINVAL;
 	}
 
-	if (txmode->mq_mode) {
-		octeontx_log_err("tx mq_mode DCB or VMDq not supported");
-		return -EINVAL;
-	}
-
-	if (rxmode->mq_mode != RTE_ETH_MQ_RX_NONE) {
-		octeontx_log_err("unsupported rx qmode %d", rxmode->mq_mode);
-		return -EINVAL;
-	}
-
 	if (!(txmode->offloads & RTE_ETH_TX_OFFLOAD_MT_LOCKFREE)) {
 		PMD_INIT_LOG(NOTICE, "cant disable lockfree tx");
 		txmode->offloads |= RTE_ETH_TX_OFFLOAD_MT_LOCKFREE;
diff --git a/drivers/net/qede/qede_ethdev.c b/drivers/net/qede/qede_ethdev.c
index c41177b86a..93fc75ad0a 100644
--- a/drivers/net/qede/qede_ethdev.c
+++ b/drivers/net/qede/qede_ethdev.c
@@ -1289,11 +1289,6 @@ static int qede_dev_configure(struct rte_eth_dev *eth_dev)
 		DP_NOTICE(edev, false,
 			  "Invalid devargs supplied, requested change will not take effect\n");
 
-	if (!(rxmode->mq_mode == RTE_ETH_MQ_RX_NONE ||
-	      rxmode->mq_mode == RTE_ETH_MQ_RX_RSS)) {
-		DP_ERR(edev, "Unsupported multi-queue mode\n");
-		return -ENOTSUP;
-	}
 	/* Flow director mode check */
 	if (qede_check_fdir_support(eth_dev))
 		return -ENOTSUP;
diff --git a/drivers/net/sfc/sfc_repr.c b/drivers/net/sfc/sfc_repr.c
index 079d02dff1..629cb7af1c 100644
--- a/drivers/net/sfc/sfc_repr.c
+++ b/drivers/net/sfc/sfc_repr.c
@@ -389,20 +389,6 @@ sfc_repr_check_conf(struct sfc_repr *sr, const struct rte_eth_conf *conf)
 		ret = -EINVAL;
 	}
 
-	switch (conf->rxmode.mq_mode) {
-	case RTE_ETH_MQ_RX_NONE:
-		break;
-	default:
-		sfcr_err(sr, "Rx mode MQ modes other than none not supported");
-		ret = -EINVAL;
-		break;
-	}
-
-	if (conf->txmode.mq_mode != RTE_ETH_MQ_TX_NONE) {
-		sfcr_err(sr, "Tx mode MQ modes not supported");
-		ret = -EINVAL;
-	}
-
 	if (conf->lpbk_mode != 0) {
 		sfcr_err(sr, "loopback not supported");
 		ret = -EINVAL;
diff --git a/drivers/net/sfc/sfc_rx.c b/drivers/net/sfc/sfc_rx.c
index aa59931f06..70ad3bf00c 100644
--- a/drivers/net/sfc/sfc_rx.c
+++ b/drivers/net/sfc/sfc_rx.c
@@ -1665,23 +1665,11 @@ sfc_rx_qinit_info(struct sfc_adapter *sa, sfc_sw_index_t sw_index,
 	return 0;
 }
 
-static int
+static void
 sfc_rx_check_mode(struct sfc_adapter *sa, struct rte_eth_rxmode *rxmode)
 {
 	uint64_t offloads_supported = sfc_rx_get_dev_offload_caps(sa) |
 				      sfc_rx_get_queue_offload_caps(sa);
-	int rc = 0;
-
-	switch (rxmode->mq_mode) {
-	case RTE_ETH_MQ_RX_NONE:
-	case RTE_ETH_MQ_RX_RSS:
-		/* No special checks are required */
-		break;
-	default:
-		sfc_err(sa, "Rx multi-queue mode %u not supported",
-			rxmode->mq_mode);
-		rc = EINVAL;
-	}
 
 	/*
 	 * Requested offloads are validated against supported by ethdev,
@@ -1699,8 +1687,6 @@ sfc_rx_check_mode(struct sfc_adapter *sa, struct rte_eth_rxmode *rxmode)
 		sfc_warn(sa, "Rx outer IPv4 checksum offload cannot be disabled - always on");
 		rxmode->offloads |= RTE_ETH_RX_OFFLOAD_OUTER_IPV4_CKSUM;
 	}
-
-	return rc;
 }
 
 /**
@@ -1759,9 +1745,7 @@ sfc_rx_configure(struct sfc_adapter *sa)
 	sfc_log_init(sa, "nb_rx_queues=%u (old %u)",
 		     nb_rx_queues, sas->ethdev_rxq_count);
 
-	rc = sfc_rx_check_mode(sa, &dev_conf->rxmode);
-	if (rc != 0)
-		goto fail_check_mode;
+	sfc_rx_check_mode(sa, &dev_conf->rxmode);
 
 	if (nb_rxq_total == sas->rxq_count) {
 		reconfigure = true;
@@ -1872,8 +1856,6 @@ sfc_rx_configure(struct sfc_adapter *sa)
 fail_rxqs_ctrl_alloc:
 fail_rxqs_alloc:
 	sfc_rx_close(sa);
-
-fail_check_mode:
 	sfc_log_init(sa, "failed %d", rc);
 	return rc;
 }
diff --git a/drivers/net/sfc/sfc_tx.c b/drivers/net/sfc/sfc_tx.c
index fac56cb27c..a860265c6a 100644
--- a/drivers/net/sfc/sfc_tx.c
+++ b/drivers/net/sfc/sfc_tx.c
@@ -314,15 +314,6 @@ sfc_tx_check_mode(struct sfc_adapter *sa, const struct rte_eth_txmode *txmode)
 	uint64_t dev_tx_offload_cap = sfc_tx_get_dev_offload_caps(sa);
 	int rc = 0;
 
-	switch (txmode->mq_mode) {
-	case RTE_ETH_MQ_TX_NONE:
-		break;
-	default:
-		sfc_err(sa, "Tx multi-queue mode %u not supported",
-			txmode->mq_mode);
-		rc = EINVAL;
-	}
-
 	if ((dev_tx_offload_cap & RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE) != 0 &&
 	    (txmode->offloads & RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE) == 0) {
 		sfc_err(sa, "There is no FAST_FREE flag in the attempted Tx mode configuration");
diff --git a/drivers/net/thunderx/nicvf_ethdev.c b/drivers/net/thunderx/nicvf_ethdev.c
index 30d03f4db9..2ed4390522 100644
--- a/drivers/net/thunderx/nicvf_ethdev.c
+++ b/drivers/net/thunderx/nicvf_ethdev.c
@@ -892,7 +892,7 @@ nicvf_configure_rss(struct rte_eth_dev *dev)
 {
 	struct nicvf *nic = nicvf_pmd_priv(dev);
 	uint64_t rsshf;
-	int ret = -EINVAL;
+	int ret;
 
 	rsshf = nicvf_rss_ethdev_to_nic(nic,
 			dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf);
@@ -901,10 +901,10 @@ nicvf_configure_rss(struct rte_eth_dev *dev)
 		    dev->data->nb_rx_queues,
 		    dev->data->dev_conf.lpbk_mode, rsshf);
 
-	if (dev->data->dev_conf.rxmode.mq_mode == RTE_ETH_MQ_RX_NONE)
-		ret = nicvf_rss_term(nic);
-	else if (dev->data->dev_conf.rxmode.mq_mode == RTE_ETH_MQ_RX_RSS)
+	if (dev->data->dev_conf.rxmode.mq_mode == RTE_ETH_MQ_RX_RSS)
 		ret = nicvf_rss_config(nic, dev->data->nb_rx_queues, rsshf);
+	else
+		ret = nicvf_rss_term(nic);
 	if (ret)
 		PMD_INIT_LOG(ERR, "Failed to configure RSS %d", ret);
 
@@ -1990,7 +1990,6 @@ nicvf_dev_configure(struct rte_eth_dev *dev)
 	struct rte_eth_dev_data *data = dev->data;
 	struct rte_eth_conf *conf = &data->dev_conf;
 	struct rte_eth_rxmode *rxmode = &conf->rxmode;
-	struct rte_eth_txmode *txmode = &conf->txmode;
 	struct nicvf *nic = nicvf_pmd_priv(dev);
 	uint8_t cqcount;
 
@@ -2004,17 +2003,6 @@ nicvf_dev_configure(struct rte_eth_dev *dev)
 		return -EINVAL;
 	}
 
-	if (txmode->mq_mode) {
-		PMD_INIT_LOG(INFO, "Tx mq_mode DCB or VMDq not supported");
-		return -EINVAL;
-	}
-
-	if (rxmode->mq_mode != RTE_ETH_MQ_RX_NONE &&
-		rxmode->mq_mode != RTE_ETH_MQ_RX_RSS) {
-		PMD_INIT_LOG(INFO, "Unsupported rx qmode %d", rxmode->mq_mode);
-		return -EINVAL;
-	}
-
 	if (conf->dcb_capability_en) {
 		PMD_INIT_LOG(INFO, "DCB enable not supported");
 		return -EINVAL;
diff --git a/drivers/net/virtio/virtio_ethdev.c b/drivers/net/virtio/virtio_ethdev.c
index a6fe4f3023..e6ad2de4ba 100644
--- a/drivers/net/virtio/virtio_ethdev.c
+++ b/drivers/net/virtio/virtio_ethdev.c
@@ -2241,20 +2241,6 @@ virtio_dev_configure(struct rte_eth_dev *dev)
 	PMD_INIT_LOG(DEBUG, "configure");
 	req_features = VIRTIO_PMD_DEFAULT_GUEST_FEATURES;
 
-	if (rxmode->mq_mode != RTE_ETH_MQ_RX_NONE && rxmode->mq_mode != RTE_ETH_MQ_RX_RSS) {
-		PMD_DRV_LOG(ERR,
-			"Unsupported Rx multi queue mode %d",
-			rxmode->mq_mode);
-		return -EINVAL;
-	}
-
-	if (txmode->mq_mode != RTE_ETH_MQ_TX_NONE) {
-		PMD_DRV_LOG(ERR,
-			"Unsupported Tx multi queue mode %d",
-			txmode->mq_mode);
-		return -EINVAL;
-	}
-
 	if (dev->data->dev_conf.intr_conf.rxq) {
 		ret = virtio_init_device(dev, hw->req_guest_features);
 		if (ret < 0)
diff --git a/drivers/net/zxdh/zxdh_ethdev.c b/drivers/net/zxdh/zxdh_ethdev.c
index 7c2f894642..f3efc927b2 100644
--- a/drivers/net/zxdh/zxdh_ethdev.c
+++ b/drivers/net/zxdh/zxdh_ethdev.c
@@ -1038,25 +1038,6 @@ zxdh_dev_configure(struct rte_eth_dev *dev)
 		return -EINVAL;
 	}
 
-	if (rxmode->mq_mode != RTE_ETH_MQ_RX_RSS && rxmode->mq_mode != RTE_ETH_MQ_RX_NONE) {
-		PMD_DRV_LOG(ERR, "Unsupported Rx multi queue mode %d", rxmode->mq_mode);
-		return -EINVAL;
-	}
-
-	if (txmode->mq_mode != RTE_ETH_MQ_TX_NONE) {
-		PMD_DRV_LOG(ERR, "Unsupported Tx multi queue mode %d", txmode->mq_mode);
-		return -EINVAL;
-	}
-	if (rxmode->mq_mode != RTE_ETH_MQ_RX_RSS && rxmode->mq_mode != RTE_ETH_MQ_RX_NONE) {
-		PMD_DRV_LOG(ERR, "Unsupported Rx multi queue mode %d", rxmode->mq_mode);
-		return -EINVAL;
-	}
-
-	if (txmode->mq_mode != RTE_ETH_MQ_TX_NONE) {
-		PMD_DRV_LOG(ERR, "Unsupported Tx multi queue mode %d", txmode->mq_mode);
-		return -EINVAL;
-	}
-
 	ret = zxdh_features_update(hw, rxmode, txmode);
 	if (ret < 0)
 		return ret;
diff --git a/lib/ethdev/rte_ethdev.c b/lib/ethdev/rte_ethdev.c
index 0988f69275..8f91a353d9 100644
--- a/lib/ethdev/rte_ethdev.c
+++ b/lib/ethdev/rte_ethdev.c
@@ -1526,6 +1526,23 @@ rte_eth_dev_configure(uint16_t port_id, uint16_t nb_rx_q, uint16_t nb_tx_q,
 		goto rollback;
 	}
 
+#define RX_MQ_MODE_KNOWN_FLAGS \
+	(RTE_ETH_MQ_RX_RSS_FLAG | RTE_ETH_MQ_RX_DCB_FLAG | RTE_ETH_MQ_RX_VMDQ_FLAG)
+
+	if ((dev_conf->rxmode.mq_mode & ~RX_MQ_MODE_KNOWN_FLAGS) != 0) {
+		RTE_ETHDEV_LOG_LINE(ERR, "Ethdev port_id=%u invalid rx mq_mode 0x%x",
+			port_id, dev_conf->rxmode.mq_mode);
+		ret = -EINVAL;
+		goto rollback;
+	}
+
+	if (dev_conf->txmode.mq_mode > RTE_ETH_MQ_TX_VMDQ_ONLY) {
+		RTE_ETHDEV_LOG_LINE(ERR, "Ethdev port_id=%u invalid tx mq_mode %u",
+			port_id, dev_conf->txmode.mq_mode);
+		ret = -EINVAL;
+		goto rollback;
+	}
+
 	if (dev_info.flow_type_rss_offloads == 0 &&
 			(dev_conf->rxmode.mq_mode & RTE_ETH_MQ_RX_RSS_FLAG) != 0) {
 		if (nb_rx_q > 1) {
-- 
2.54.0

Re: [PATCH v3 00/13] Validate multiqueue configuration in ethdev

[Stephen Hemminger]

On Thu, 22 Oct 2026 19:44:27 +0200
David Marchand <david.marchand@redhat.com> wrote:

> We have various checks in drivers about Rx and Tx multiqueue
> configuration.
> This series is a followup of the VMDq cleanup, finishing the job with
> DCB and RSS, and then rejecting invalid multiqueue configuration (useful
> from an ABI point of view).
> 
> Some drivers misreported their capabilities.
> It is important drivers maintainers review carefully those changes.
> 

Review: [PATCH v3 00/13] ethdev multi-queue mode validation

Applied cleanly on main (a635140ba9). Every commit builds with
-Dwerror=true for the touched drivers (except mvneta/mvpp2, no musdk)
and the touched apps and examples. check-doc-vs-code.sh full mode is
clean at every commit.

v2 items addressed: incremental mode now checks the changed drivers
(adding "VMDq = Y" to mlx5.ini is reported with a trusted commit),
intel directory detection (03/13), Cc: stable on 06, 09 and 11, RSS
commit message (12/13). Shared-directory rte_flow checks behave as
described: a doc-only item in cnxk_vf.ini is reported, and an item
missing from every ice doc is reported against ice.

One item left.


Patch 12/13 ethdev: check RSS availability

Warning: the release note still says RSS mode is always rejected. The
code rejects it only with more than one Rx queue and ignores it with
one:

  * RSS mode (Rx ``RTE_ETH_MQ_RX_RSS_FLAG``) is rejected with more than
    one Rx queue if the driver reports no ``flow_type_rss_offloads``,
    and ignored with a single Rx queue.