[dpdk-dev] [PATCH] net/bnxt: fix Tx timestamp init

[Somnath Kotur <somnath.kotur@broadcom.com>]

Fix to read the sequence ID register to get Tx timestamp.
Reading the sequence ID register is necessary for the HW FIFO to
advance and thereby get the correct value of the timestamp on Tx side.
This patch fixes that.

Fixes: b11cceb83a3 ("net/bnxt: support timesync")
Cc: stable@dpdk.org

Reviewed-by: Kalesh Anakkur Purayil <kalesh-anakkur.purayil@broadcom.com>
Reviewed-by: Lance Richardson <lance.richardson@broadcom.com>
Reviewed-by: Ajit Kumar Khaparde <ajit.khaparde@broadcom.com>
Signed-off-by: Somnath Kotur <somnath.kotur@broadcom.com>
---
 drivers/net/bnxt/bnxt_ethdev.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/bnxt/bnxt_ethdev.c b/drivers/net/bnxt/bnxt_ethdev.c
index 6cc6af0a66..3cda3bd4a5 100644
--- a/drivers/net/bnxt/bnxt_ethdev.c
+++ b/drivers/net/bnxt/bnxt_ethdev.c
@@ -3377,6 +3377,7 @@ static int bnxt_get_tx_ts(struct bnxt *bp, uint64_t *ts)
 				ptp->tx_mapped_regs[BNXT_PTP_TX_TS_L]));
 	*ts |= (uint64_t)rte_le_to_cpu_32(rte_read32((uint8_t *)bp->bar0 +
 				ptp->tx_mapped_regs[BNXT_PTP_TX_TS_H])) << 32;
+	rte_read32((uint8_t *)bp->bar0 + ptp->tx_mapped_regs[BNXT_PTP_TX_SEQ]);
 
 	return 0;
 }
-- 
2.28.0.497.g54e85e7