[dpdk-dev] [PATCH 18/31] net/sfc: add RxQ descriptor done callback

[Andrew Rybchenko <arybchenko@solarflare.com>]

Reviewed-by: Andrew Lee <alee@solarflare.com>
Reviewed-by: Robert Stonehouse <rstonehouse@solarflare.com>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
---
 drivers/net/sfc/sfc_ethdev.c |  9 +++++++++
 drivers/net/sfc/sfc_rx.c     | 11 +++++++++++
 drivers/net/sfc/sfc_rx.h     |  1 +
 3 files changed, 21 insertions(+)

diff --git a/drivers/net/sfc/sfc_ethdev.c b/drivers/net/sfc/sfc_ethdev.c
index 163f9ed..59dcdb4 100644
--- a/drivers/net/sfc/sfc_ethdev.c
+++ b/drivers/net/sfc/sfc_ethdev.c
@@ -855,6 +855,14 @@ sfc_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 	return sfc_rx_qdesc_npending(sa, rx_queue_id);
 }
 
+static int
+sfc_rx_descriptor_done(void *queue, uint16_t offset)
+{
+	struct sfc_rxq *rxq = queue;
+
+	return sfc_rx_qdesc_done(rxq, offset);
+}
+
 static const struct eth_dev_ops sfc_eth_dev_ops = {
 	.dev_configure			= sfc_dev_configure,
 	.dev_start			= sfc_dev_start,
@@ -876,6 +884,7 @@ static const struct eth_dev_ops sfc_eth_dev_ops = {
 	.rx_queue_setup			= sfc_rx_queue_setup,
 	.rx_queue_release		= sfc_rx_queue_release,
 	.rx_queue_count			= sfc_rx_queue_count,
+	.rx_descriptor_done		= sfc_rx_descriptor_done,
 	.tx_queue_setup			= sfc_tx_queue_setup,
 	.tx_queue_release		= sfc_tx_queue_release,
 	.flow_ctrl_get			= sfc_flow_ctrl_get,
diff --git a/drivers/net/sfc/sfc_rx.c b/drivers/net/sfc/sfc_rx.c
index ff9d799..802beb2 100644
--- a/drivers/net/sfc/sfc_rx.c
+++ b/drivers/net/sfc/sfc_rx.c
@@ -273,6 +273,17 @@ sfc_rx_qdesc_npending(struct sfc_adapter *sa, unsigned int sw_index)
 	return rxq->pending - rxq->completed;
 }
 
+int
+sfc_rx_qdesc_done(struct sfc_rxq *rxq, unsigned int offset)
+{
+	if ((rxq->state & SFC_RXQ_RUNNING) == 0)
+		return 0;
+
+	sfc_ev_qpoll(rxq->evq);
+
+	return offset < (rxq->pending - rxq->completed);
+}
+
 static void
 sfc_rx_qpurge(struct sfc_rxq *rxq)
 {
diff --git a/drivers/net/sfc/sfc_rx.h b/drivers/net/sfc/sfc_rx.h
index 8064af6..8d8e709 100644
--- a/drivers/net/sfc/sfc_rx.h
+++ b/drivers/net/sfc/sfc_rx.h
@@ -142,6 +142,7 @@ uint16_t sfc_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
 
 unsigned int sfc_rx_qdesc_npending(struct sfc_adapter *sa,
 				   unsigned int sw_index);
+int sfc_rx_qdesc_done(struct sfc_rxq *rxq, unsigned int offset);
 
 #ifdef __cplusplus
 }
-- 
2.5.5