[PATCH v10 13/13] net/nfp: add the representor port rxtx logic

[Chaoyong He <chaoyong.he@corigine.com>]

For the Rx logic, the representor port decap packet from the
corresponding ring.

For the Tx logic, the representor port prepend the metadata
into packet, and send to firmware through the queue 0 of pf
vNIC.

Signed-off-by: Chaoyong He <chaoyong.he@corigine.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@corigine.com>
---
 drivers/net/nfp/flower/nfp_flower_representor.c | 90 +++++++++++++++++++++++++
 1 file changed, 90 insertions(+)

diff --git a/drivers/net/nfp/flower/nfp_flower_representor.c b/drivers/net/nfp/flower/nfp_flower_representor.c
index b47b0a5..0e60f50 100644
--- a/drivers/net/nfp/flower/nfp_flower_representor.c
+++ b/drivers/net/nfp/flower/nfp_flower_representor.c
@@ -464,6 +464,92 @@
 	return 0;
 }
 
+static uint16_t
+nfp_flower_repr_rx_burst(void *rx_queue,
+		struct rte_mbuf **rx_pkts,
+		uint16_t nb_pkts)
+{
+	unsigned int available = 0;
+	unsigned int total_dequeue;
+	struct nfp_net_rxq *rxq;
+	struct rte_eth_dev *dev;
+	struct nfp_flower_representor *repr;
+
+	rxq = rx_queue;
+	if (unlikely(rxq == NULL)) {
+		PMD_RX_LOG(ERR, "RX Bad queue");
+		return 0;
+	}
+
+	dev = &rte_eth_devices[rxq->port_id];
+	repr = dev->data->dev_private;
+	if (unlikely(repr->ring == NULL)) {
+		PMD_RX_LOG(ERR, "representor %s has no ring configured!",
+				repr->name);
+		return 0;
+	}
+
+	total_dequeue = rte_ring_dequeue_burst(repr->ring, (void *)rx_pkts,
+			nb_pkts, &available);
+	if (total_dequeue != 0) {
+		PMD_RX_LOG(DEBUG, "Representor Rx burst for %s, port_id: 0x%x, "
+				"received: %u, available: %u", repr->name,
+				repr->port_id, total_dequeue, available);
+
+		repr->repr_stats.ipackets += total_dequeue;
+	}
+
+	return total_dequeue;
+}
+
+static uint16_t
+nfp_flower_repr_tx_burst(void *tx_queue,
+		struct rte_mbuf **tx_pkts,
+		uint16_t nb_pkts)
+{
+	uint16_t i;
+	uint16_t sent;
+	char *meta_offset;
+	void *pf_tx_queue;
+	struct nfp_net_txq *txq;
+	struct nfp_net_hw *pf_hw;
+	struct rte_eth_dev *dev;
+	struct rte_eth_dev *repr_dev;
+	struct nfp_flower_representor *repr;
+
+	txq = tx_queue;
+	if (unlikely(txq == NULL)) {
+		PMD_TX_LOG(ERR, "TX Bad queue");
+		return 0;
+	}
+
+	/* Grab a handle to the representor struct */
+	repr_dev = &rte_eth_devices[txq->port_id];
+	repr = repr_dev->data->dev_private;
+
+	for (i = 0; i < nb_pkts; i++) {
+		meta_offset = rte_pktmbuf_prepend(tx_pkts[i], FLOWER_PKT_DATA_OFFSET);
+		*(uint32_t *)meta_offset = rte_cpu_to_be_32(NFP_NET_META_PORTID);
+		meta_offset += 4;
+		*(uint32_t *)meta_offset = rte_cpu_to_be_32(repr->port_id);
+	}
+
+	/* This points to the PF vNIC that owns this representor */
+	pf_hw = txq->hw;
+	dev = pf_hw->eth_dev;
+
+	/* Only using Tx queue 0 for now. */
+	pf_tx_queue = dev->data->tx_queues[0];
+	sent = nfp_flower_pf_xmit_pkts(pf_tx_queue, tx_pkts, nb_pkts);
+	if (sent != 0) {
+		PMD_TX_LOG(DEBUG, "Representor Tx burst for %s, port_id: 0x%x transmitted: %u",
+				repr->name, repr->port_id, sent);
+		repr->repr_stats.opackets += sent;
+	}
+
+	return sent;
+}
+
 static const struct eth_dev_ops nfp_flower_pf_repr_dev_ops = {
 	.dev_infos_get        = nfp_flower_repr_dev_infos_get,
 
@@ -553,6 +639,8 @@
 	snprintf(repr->name, sizeof(repr->name), "%s", init_repr_data->name);
 
 	eth_dev->dev_ops = &nfp_flower_pf_repr_dev_ops;
+	eth_dev->rx_pkt_burst = nfp_flower_pf_recv_pkts;
+	eth_dev->tx_pkt_burst = nfp_flower_pf_xmit_pkts;
 	eth_dev->data->dev_flags |= RTE_ETH_DEV_REPRESENTOR;
 
 	eth_dev->data->representor_id = 0;
@@ -622,6 +710,8 @@
 	snprintf(repr->name, sizeof(repr->name), "%s", init_repr_data->name);
 
 	eth_dev->dev_ops = &nfp_flower_repr_dev_ops;
+	eth_dev->rx_pkt_burst = nfp_flower_repr_rx_burst;
+	eth_dev->tx_pkt_burst = nfp_flower_repr_tx_burst;
 	eth_dev->data->dev_flags |= RTE_ETH_DEV_REPRESENTOR;
 
 	if (repr->repr_type == NFP_REPR_TYPE_PHYS_PORT)
-- 
1.8.3.1