[dpdk-dev] [PATCH v3 23/46] net/liquidio: add API to release Rx queue

[Shijith Thotton <shijith.thotton@caviumnetworks.com>]

Signed-off-by: Shijith Thotton <shijith.thotton@caviumnetworks.com>
Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
Signed-off-by: Derek Chickles <derek.chickles@caviumnetworks.com>
Signed-off-by: Venkat Koppula <venkat.koppula@caviumnetworks.com>
Signed-off-by: Srisivasubramanian S <ssrinivasan@caviumnetworks.com>
Signed-off-by: Mallesham Jatharakonda <mjatharakonda@oneconvergence.com>
---
 drivers/net/liquidio/lio_ethdev.c | 28 ++++++++++++++++++++++++++++
 drivers/net/liquidio/lio_rxtx.c   | 10 ++++++++++
 drivers/net/liquidio/lio_rxtx.h   |  1 +
 3 files changed, 39 insertions(+)

diff --git a/drivers/net/liquidio/lio_ethdev.c b/drivers/net/liquidio/lio_ethdev.c
index ebfdf7a..d5f650e 100644
--- a/drivers/net/liquidio/lio_ethdev.c
+++ b/drivers/net/liquidio/lio_ethdev.c
@@ -121,6 +121,33 @@
 	return 0;
 }
 
+/**
+ * Release the receive queue/ringbuffer. Called by
+ * the upper layers.
+ *
+ * @param rxq
+ *    Opaque pointer to the receive queue to release
+ *
+ * @return
+ *    - nothing
+ */
+static void
+lio_dev_rx_queue_release(void *rxq)
+{
+	struct lio_droq *droq = rxq;
+	struct lio_device *lio_dev = droq->lio_dev;
+	int oq_no;
+
+	/* Run time queue deletion not supported */
+	if (lio_dev->port_configured)
+		return;
+
+	if (droq != NULL) {
+		oq_no = droq->q_no;
+		lio_delete_droq_queue(droq->lio_dev, oq_no);
+	}
+}
+
 static int lio_dev_configure(struct rte_eth_dev *eth_dev)
 {
 	struct lio_device *lio_dev = LIO_DEV(eth_dev);
@@ -266,6 +293,7 @@ static int lio_dev_configure(struct rte_eth_dev *eth_dev)
 static const struct eth_dev_ops liovf_eth_dev_ops = {
 	.dev_configure		= lio_dev_configure,
 	.rx_queue_setup		= lio_dev_rx_queue_setup,
+	.rx_queue_release	= lio_dev_rx_queue_release,
 };
 
 static void
diff --git a/drivers/net/liquidio/lio_rxtx.c b/drivers/net/liquidio/lio_rxtx.c
index 9e4da3a..4e63a50 100644
--- a/drivers/net/liquidio/lio_rxtx.c
+++ b/drivers/net/liquidio/lio_rxtx.c
@@ -706,6 +706,16 @@
 	return pkts_processed;
 }
 
+void
+lio_delete_droq_queue(struct lio_device *lio_dev,
+		      int oq_no)
+{
+	lio_delete_droq(lio_dev, oq_no);
+	lio_dev->num_oqs--;
+	rte_free(lio_dev->droq[oq_no]);
+	lio_dev->droq[oq_no] = NULL;
+}
+
 /**
  *  lio_init_instr_queue()
  *  @param lio_dev	- pointer to the lio device structure.
diff --git a/drivers/net/liquidio/lio_rxtx.h b/drivers/net/liquidio/lio_rxtx.h
index 420b893..76d067e 100644
--- a/drivers/net/liquidio/lio_rxtx.h
+++ b/drivers/net/liquidio/lio_rxtx.h
@@ -546,6 +546,7 @@ int lio_setup_droq(struct lio_device *lio_dev, int q_no, int num_descs,
 		   unsigned int socket_id);
 uint16_t lio_dev_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
 			   uint16_t budget);
+void lio_delete_droq_queue(struct lio_device *lio_dev, int oq_no);
 
 /** Setup instruction queue zero for the device
  *  @param lio_dev which lio device to setup
-- 
1.8.3.1