[dpdk-dev] [PATCH v1 2/3] drivers/net/virtio: Add ethdev functions

[Remy Horton <remy.horton@intel.com>]

Implements driver support for fetching Tx and Rx queue information.

Signed-off-by: Remy Horton <remy.horton@intel.com>
---
 doc/guides/rel_notes/release_2_3.rst |  4 +++
 drivers/net/virtio/virtio_ethdev.c   | 47 ++++++++++++++++++++++++++++++++++++
 2 files changed, 51 insertions(+)

diff --git a/doc/guides/rel_notes/release_2_3.rst b/doc/guides/rel_notes/release_2_3.rst
index 2ac48dd..e6dab98 100644
--- a/doc/guides/rel_notes/release_2_3.rst
+++ b/doc/guides/rel_notes/release_2_3.rst
@@ -9,6 +9,10 @@ New Features
   Implemented driver functions for Register dumping, EEPROM dumping, and
   setting of MAC address.
 
+* **virtio: Added ethdev support functions.**
+
+  Implemented Tx & Rx queue information fetching functions.
+
 
 Resolved Issues
 ---------------
diff --git a/drivers/net/virtio/virtio_ethdev.c b/drivers/net/virtio/virtio_ethdev.c
index d928339..032e4dc 100644
--- a/drivers/net/virtio/virtio_ethdev.c
+++ b/drivers/net/virtio/virtio_ethdev.c
@@ -95,6 +95,12 @@ static void virtio_mac_addr_add(struct rte_eth_dev *dev,
 static void virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index);
 static void virtio_mac_addr_set(struct rte_eth_dev *dev,
 				struct ether_addr *mac_addr);
+static void virtio_rxq_info_get(struct rte_eth_dev *dev,
+				uint16_t queue_id,
+				struct rte_eth_rxq_info *qinfo);
+static void virtio_txq_info_get(struct rte_eth_dev *dev,
+				uint16_t queue_id,
+				struct rte_eth_txq_info *qinfo);
 
 static int virtio_dev_queue_stats_mapping_set(
 	__rte_unused struct rte_eth_dev *eth_dev,
@@ -620,6 +626,8 @@ static const struct eth_dev_ops virtio_eth_dev_ops = {
 	.mac_addr_add            = virtio_mac_addr_add,
 	.mac_addr_remove         = virtio_mac_addr_remove,
 	.mac_addr_set            = virtio_mac_addr_set,
+	.rxq_info_get            = virtio_rxq_info_get,
+	.txq_info_get            = virtio_txq_info_get,
 };
 
 static inline int
@@ -1672,6 +1680,45 @@ virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
 	};
 }
 
+static void virtio_rxq_info_get(struct rte_eth_dev *dev,
+				uint16_t queue_id,
+				struct rte_eth_rxq_info *qinfo)
+{
+	struct virtqueue *rxq;
+
+	rxq = dev->data->rx_queues[queue_id];
+
+	qinfo->mp = rxq->mpool;
+	qinfo->scattered_rx = dev->data->scattered_rx;
+	qinfo->nb_desc = rxq->vq_nentries;
+
+	qinfo->conf.rx_free_thresh = rxq->vq_free_thresh;
+
+	/* Virtio does not have these */
+	qinfo->conf.rx_drop_en = 0;
+	qinfo->conf.rx_deferred_start = 0;
+}
+
+static void virtio_txq_info_get(struct rte_eth_dev *dev,
+				uint16_t queue_id,
+				struct rte_eth_txq_info *qinfo)
+{
+	struct virtqueue *txq;
+
+	txq = dev->data->tx_queues[queue_id];
+
+	qinfo->nb_desc = txq->vq_nentries;
+	qinfo->conf.tx_free_thresh = txq->vq_free_thresh;
+
+	/* Virtio does not have these */
+	qinfo->conf.tx_thresh.pthresh = 0;
+	qinfo->conf.tx_thresh.hthresh = 0;
+	qinfo->conf.tx_thresh.wthresh = 0;
+	qinfo->conf.tx_rs_thresh = 0;
+	qinfo->conf.txq_flags = 0;
+	qinfo->conf.tx_deferred_start = 0;
+}
+
 /*
  * It enables testpmd to collect per queue stats.
  */
-- 
2.5.0