[dpdk-dev] [PATCH v2] net/octeontx2: fix PTP enable via Rx ofload flags

[Harman Kalra <hkalra@marvell.com>]

Earlier implementation for enabling ptp via RX offload flag was
causing segmentation fault as it was getting executed in the
device configuration stage where RX and TX queues were not
configured. As in the ptp enable process rx queues are used for
mbuf setup while tx queues are used for send descriptor setup.
Moving the logic in dev start as all the resources will be
configured.

Fixes: b5dc3140448ee ("net/octeontx2: support base PTP")

Signed-off-by: Harman Kalra <hkalra@marvell.com>
---
 drivers/net/octeontx2/otx2_ethdev.c | 23 +++++++++++++----------
 1 file changed, 13 insertions(+), 10 deletions(-)

diff --git a/drivers/net/octeontx2/otx2_ethdev.c b/drivers/net/octeontx2/otx2_ethdev.c
index 725fb2431..b018b25b7 100644
--- a/drivers/net/octeontx2/otx2_ethdev.c
+++ b/drivers/net/octeontx2/otx2_ethdev.c
@@ -625,6 +625,9 @@ nix_tx_offload_flags(struct rte_eth_dev *eth_dev)
 	if (conf & DEV_TX_OFFLOAD_MULTI_SEGS)
 		flags |= NIX_TX_MULTI_SEG_F;
 
+	if ((dev->rx_offloads & DEV_RX_OFFLOAD_TIMESTAMP))
+		flags |= NIX_TX_OFFLOAD_TSTAMP_F;
+
 	return flags;
 }
 
@@ -1333,16 +1336,6 @@ otx2_nix_configure(struct rte_eth_dev *eth_dev)
 		goto q_irq_fini;
 	}
 
-	/* Enable PTP if it was requested by the app or if it is already
-	 * enabled in PF owning this VF
-	 */
-	memset(&dev->tstamp, 0, sizeof(struct otx2_timesync_info));
-	if ((dev->rx_offloads & DEV_RX_OFFLOAD_TIMESTAMP) ||
-	    otx2_ethdev_is_ptp_en(dev))
-		otx2_nix_timesync_enable(eth_dev);
-	else
-		otx2_nix_timesync_disable(eth_dev);
-
 	/*
 	 * Restore queue config when reconfigure followed by
 	 * reconfigure and no queue configure invoked from application case.
@@ -1551,6 +1544,16 @@ otx2_nix_dev_start(struct rte_eth_dev *eth_dev)
 		return rc;
 	}
 
+	/* Enable PTP if it was requested by the app or if it is already
+	 * enabled in PF owning this VF
+	 */
+	memset(&dev->tstamp, 0, sizeof(struct otx2_timesync_info));
+	if ((dev->rx_offloads & DEV_RX_OFFLOAD_TIMESTAMP) ||
+	    otx2_ethdev_is_ptp_en(dev))
+		otx2_nix_timesync_enable(eth_dev);
+	else
+		otx2_nix_timesync_disable(eth_dev);
+
 	rc = npc_rx_enable(dev);
 	if (rc) {
 		otx2_err("Failed to enable NPC rx %d", rc);
-- 
2.18.0