[PATCH v11 08/15] net/enetc: support ethtool ring parameters

[Gagandeep Singh <g.singh@nxp.com>]

The ethtool ring parameter query relies on the queue info ethdev
ops (.rxq_info_get/.txq_info_get) together with the descriptor
limits reported in dev_info. The PF already registered these ops,
but the VF ops tables did not, so ring parameter queries failed on
the VF.

Make enetc4_rxq_info_get() and enetc4_txq_info_get() non-static and
register them in both VF ops tables so ring parameters are reported
for both the PF and VF.

Signed-off-by: Gagandeep Singh <g.singh@nxp.com>
---
 doc/guides/rel_notes/release_26_11.rst |  1 +
 drivers/net/enetc/enetc.h              |  4 ++++
 drivers/net/enetc/enetc4_ethdev.c      | 10 ++++++----
 drivers/net/enetc/enetc4_vf.c          |  4 ++++
 4 files changed, 15 insertions(+), 4 deletions(-)

diff --git a/doc/guides/rel_notes/release_26_11.rst b/doc/guides/rel_notes/release_26_11.rst
index 6fece98f28..ec223a93ba 100644
--- a/doc/guides/rel_notes/release_26_11.rst
+++ b/doc/guides/rel_notes/release_26_11.rst
@@ -68,6 +68,7 @@ New Features
     as a device argument, otherwise link speed reporting will be incorrect.
   * Added firmware version reporting for the ENETC4 VF.
   * Added register dump support for ENETC4 PF and VF.
+  * Added ring parameters support for the ENETC4 VF (rxq_info_get / txq_info_get).
 
 Removed Items
 -------------
diff --git a/drivers/net/enetc/enetc.h b/drivers/net/enetc/enetc.h
index 02b935ad8e..eec0edc963 100644
--- a/drivers/net/enetc/enetc.h
+++ b/drivers/net/enetc/enetc.h
@@ -336,6 +336,10 @@ int enetc4_tx_queue_stop(struct rte_eth_dev *dev, uint16_t qidx);
 void enetc4_tx_queue_release(struct rte_eth_dev *dev, uint16_t qid);
 const uint32_t *enetc4_supported_ptypes_get(struct rte_eth_dev *dev __rte_unused,
 			size_t *no_of_elements);
+void enetc4_rxq_info_get(struct rte_eth_dev *dev, uint16_t queue_id,
+			 struct rte_eth_rxq_info *qinfo);
+void enetc4_txq_info_get(struct rte_eth_dev *dev, uint16_t queue_id,
+			 struct rte_eth_txq_info *qinfo);
 
 /*
  * enetc4_vf function prototype
diff --git a/drivers/net/enetc/enetc4_ethdev.c b/drivers/net/enetc/enetc4_ethdev.c
index 6064a4d905..f31eed849e 100644
--- a/drivers/net/enetc/enetc4_ethdev.c
+++ b/drivers/net/enetc/enetc4_ethdev.c
@@ -1164,7 +1164,7 @@ enetc4_tx_queue_stop(struct rte_eth_dev *dev, uint16_t qidx)
 	return 0;
 }
 
-static void
+void
 enetc4_rxq_info_get(struct rte_eth_dev *dev, uint16_t queue_id,
 			struct rte_eth_rxq_info *qinfo)
 {
@@ -1172,19 +1172,21 @@ enetc4_rxq_info_get(struct rte_eth_dev *dev, uint16_t queue_id,
 
 	qinfo->mp = rxq->mb_pool;
 	qinfo->scattered_rx = dev->data->scattered_rx;
-	qinfo->nb_desc = rxq->bd_count;
+	/* RSC rings use 2 slots per descriptor; report the requested count. */
+	qinfo->nb_desc = rxq->rsc_enable ? rxq->bd_count / 2 : rxq->bd_count;
 	qinfo->conf.rx_free_thresh = 0;
 	qinfo->conf.rx_deferred_start = rxq->rx_deferred_start;
 	qinfo->conf.rx_drop_en = 0;
 }
 
-static void
+void
 enetc4_txq_info_get(struct rte_eth_dev *dev, uint16_t queue_id,
 			struct rte_eth_txq_info *qinfo)
 {
 	struct enetc_bdr *txq = dev->data->tx_queues[queue_id];
 
-	qinfo->nb_desc = txq->bd_count;
+	/* LSO rings use 2 slots per descriptor; report the requested count. */
+	qinfo->nb_desc = txq->lso_enable ? txq->bd_count / 2 : txq->bd_count;
 	qinfo->conf.tx_thresh.pthresh = 0;
 	qinfo->conf.tx_thresh.hthresh = 0;
 	qinfo->conf.tx_thresh.wthresh = 0;
diff --git a/drivers/net/enetc/enetc4_vf.c b/drivers/net/enetc/enetc4_vf.c
index ec9a2e2bf8..3da84941a2 100644
--- a/drivers/net/enetc/enetc4_vf.c
+++ b/drivers/net/enetc/enetc4_vf.c
@@ -1539,10 +1539,12 @@ static const struct eth_dev_ops enetc4_vf_ops_no_vsi_m = {
 	.rx_queue_start       = enetc4_rx_queue_start,
 	.rx_queue_stop        = enetc4_rx_queue_stop,
 	.rx_queue_release     = enetc4_rx_queue_release,
+	.rxq_info_get         = enetc4_rxq_info_get,
 	.tx_queue_setup       = enetc4_tx_queue_setup,
 	.tx_queue_start       = enetc4_tx_queue_start,
 	.tx_queue_stop        = enetc4_tx_queue_stop,
 	.tx_queue_release     = enetc4_tx_queue_release,
+	.txq_info_get         = enetc4_txq_info_get,
 	.dev_supported_ptypes_get = enetc4_supported_ptypes_get,
 };
 
@@ -1569,10 +1571,12 @@ static const struct eth_dev_ops enetc4_vf_ops = {
 	.rx_queue_start       = enetc4_rx_queue_start,
 	.rx_queue_stop        = enetc4_rx_queue_stop,
 	.rx_queue_release     = enetc4_rx_queue_release,
+	.rxq_info_get         = enetc4_rxq_info_get,
 	.tx_queue_setup       = enetc4_tx_queue_setup,
 	.tx_queue_start       = enetc4_tx_queue_start,
 	.tx_queue_stop        = enetc4_tx_queue_stop,
 	.tx_queue_release     = enetc4_tx_queue_release,
+	.txq_info_get         = enetc4_txq_info_get,
 	.dev_supported_ptypes_get = enetc4_supported_ptypes_get,
 };
 
-- 
2.25.1