[dpdk-dev] [PATCH v3 18/19] net/dpaa2: change reference to private device

[Shreyansh Jain <shreyansh.jain@nxp.com>]

The I/O threads for DPAA2 take their reference for bpool ID, the
port ID and other info like qdid, from the rte_eth_dev. Further,
to get this data during I/O operation, a reference of the RTE
device is kept in the queue structure (dpaa2_queue).

In case of secondary processes, rte_eth_dev is not same as the
primary process. Thus, the reference goes invalid.

This patch changes the implementation to use the dev_private
rather than the rte_eth_dev as that is shared area across
all the processes.

Signed-off-by: Shreyansh Jain <shreyansh.jain@nxp.com>
---
 drivers/bus/fslmc/portal/dpaa2_hw_pvt.h |  5 ++++-
 drivers/net/dpaa2/dpaa2_ethdev.c        |  4 ++--
 drivers/net/dpaa2/dpaa2_rxtx.c          | 18 ++++++++++--------
 3 files changed, 16 insertions(+), 11 deletions(-)

diff --git a/drivers/bus/fslmc/portal/dpaa2_hw_pvt.h b/drivers/bus/fslmc/portal/dpaa2_hw_pvt.h
index 20c606dbe..626fcbbca 100644
--- a/drivers/bus/fslmc/portal/dpaa2_hw_pvt.h
+++ b/drivers/bus/fslmc/portal/dpaa2_hw_pvt.h
@@ -127,7 +127,10 @@ typedef void (dpaa2_queue_cb_dqrr_t)(struct qbman_swp *swp,
 
 struct dpaa2_queue {
 	struct rte_mempool *mb_pool; /**< mbuf pool to populate RX ring. */
-	void *dev;
+	union {
+		struct rte_eth_dev_data *eth_data;
+		void *dev;
+	};
 	int32_t eventfd;	/*!< Event Fd of this queue */
 	uint32_t fqid;		/*!< Unique ID of this queue */
 	uint8_t tc_index;	/*!< traffic class identifier */
diff --git a/drivers/net/dpaa2/dpaa2_ethdev.c b/drivers/net/dpaa2/dpaa2_ethdev.c
index 3a20158da..2b90f4021 100644
--- a/drivers/net/dpaa2/dpaa2_ethdev.c
+++ b/drivers/net/dpaa2/dpaa2_ethdev.c
@@ -244,7 +244,7 @@ dpaa2_alloc_rx_tx_queues(struct rte_eth_dev *dev)
 	}
 
 	for (i = 0; i < priv->nb_rx_queues; i++) {
-		mc_q->dev = dev;
+		mc_q->eth_data = dev->data;
 		priv->rx_vq[i] = mc_q++;
 		dpaa2_q = (struct dpaa2_queue *)priv->rx_vq[i];
 		dpaa2_q->q_storage = rte_malloc("dq_storage",
@@ -260,7 +260,7 @@ dpaa2_alloc_rx_tx_queues(struct rte_eth_dev *dev)
 	}
 
 	for (i = 0; i < priv->nb_tx_queues; i++) {
-		mc_q->dev = dev;
+		mc_q->eth_data = dev->data;
 		mc_q->flow_id = 0xffff;
 		priv->tx_vq[i] = mc_q++;
 		dpaa2_q = (struct dpaa2_queue *)priv->tx_vq[i];
diff --git a/drivers/net/dpaa2/dpaa2_rxtx.c b/drivers/net/dpaa2/dpaa2_rxtx.c
index 6e2e8abd7..2d4b9ef14 100644
--- a/drivers/net/dpaa2/dpaa2_rxtx.c
+++ b/drivers/net/dpaa2/dpaa2_rxtx.c
@@ -509,7 +509,7 @@ dpaa2_dev_prefetch_rx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
 	const struct qbman_fd *fd, *next_fd;
 	struct qbman_pull_desc pulldesc;
 	struct queue_storage_info_t *q_storage = dpaa2_q->q_storage;
-	struct rte_eth_dev *dev = dpaa2_q->dev;
+	struct rte_eth_dev_data *eth_data = dpaa2_q->eth_data;
 
 	if (unlikely(!DPAA2_PER_LCORE_ETHRX_DPIO)) {
 		ret = dpaa2_affine_qbman_ethrx_swp();
@@ -613,9 +613,10 @@ dpaa2_dev_prefetch_rx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
 			bufs[num_rx] = eth_sg_fd_to_mbuf(fd);
 		else
 			bufs[num_rx] = eth_fd_to_mbuf(fd);
-		bufs[num_rx]->port = dev->data->port_id;
+		bufs[num_rx]->port = eth_data->port_id;
 
-		if (dev->data->dev_conf.rxmode.offloads & DEV_RX_OFFLOAD_VLAN_STRIP)
+		if (eth_data->dev_conf.rxmode.offloads &
+				DEV_RX_OFFLOAD_VLAN_STRIP)
 			rte_vlan_strip(bufs[num_rx]);
 
 		dq_storage++;
@@ -716,8 +717,8 @@ dpaa2_dev_tx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
 	struct qbman_swp *swp;
 	uint16_t num_tx = 0;
 	uint16_t bpid;
-	struct rte_eth_dev *dev = dpaa2_q->dev;
-	struct dpaa2_dev_priv *priv = dev->data->dev_private;
+	struct rte_eth_dev_data *eth_data = dpaa2_q->eth_data;
+	struct dpaa2_dev_priv *priv = eth_data->dev_private;
 	uint32_t flags[MAX_TX_RING_SLOTS] = {0};
 
 	if (unlikely(!DPAA2_PER_LCORE_DPIO)) {
@@ -729,7 +730,8 @@ dpaa2_dev_tx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
 	}
 	swp = DPAA2_PER_LCORE_PORTAL;
 
-	DPAA2_PMD_DP_DEBUG("===> dev =%p, fqid =%d\n", dev, dpaa2_q->fqid);
+	DPAA2_PMD_DP_DEBUG("===> eth_data =%p, fqid =%d\n",
+			eth_data, dpaa2_q->fqid);
 
 	/*Prepare enqueue descriptor*/
 	qbman_eq_desc_clear(&eqdesc);
@@ -772,7 +774,7 @@ dpaa2_dev_tx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
 				    rte_mbuf_refcnt_read((*bufs)) == 1)) {
 					if (unlikely(((*bufs)->ol_flags
 						& PKT_TX_VLAN_PKT) ||
-						(dev->data->dev_conf.txmode.offloads
+						(eth_data->dev_conf.txmode.offloads
 						& DEV_TX_OFFLOAD_VLAN_INSERT))) {
 						ret = rte_vlan_insert(bufs);
 						if (ret)
@@ -794,7 +796,7 @@ dpaa2_dev_tx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
 			}
 
 			if (unlikely(((*bufs)->ol_flags & PKT_TX_VLAN_PKT) ||
-				(dev->data->dev_conf.txmode.offloads
+				(eth_data->dev_conf.txmode.offloads
 				& DEV_TX_OFFLOAD_VLAN_INSERT))) {
 				int ret = rte_vlan_insert(bufs);
 				if (ret)
-- 
2.17.1