[PATCH v2 2/3] net/hns3: fix fail to receive PTP packet

[Dongdong Liu <liudongdong3@huawei.com>]

From: Huisong Li <lihuisong@huawei.com>

The Rx and Tx vector algorithm of hns3 PMD don't support PTP
function. Currently, hns3 driver uses 'pf->ptp_enable' to check
whether PTP is enabled so as to not select Rx and Tx vector
algorithm. And the variable is set when call rte_eth_timesync_enable().
Namely, it may not be set before selecting Rx/Tx function, let's say
the case: set PTP offload in dev_configure(), do dev_start() and then
call rte_eth_timesync_enable(). In this case, all PTP packets can not
be received to application. So this patch fixes the check based on the
RTE_ETH_RX_OFFLOAD_TIMESTAMP flag.

Fixes: 71f4d1aae11f ("net/hns3: fix vector burst unsupported when PTP capability set")
Cc: stable@dpdk.org

Signed-off-by: Huisong Li <lihuisong@huawei.com>
Signed-off-by: Dongdong Liu <liudongdong3@huawei.com>
---
 drivers/net/hns3/hns3_ptp.c      |  1 -
 drivers/net/hns3/hns3_rxtx_vec.c | 20 +++++++++-----------
 2 files changed, 9 insertions(+), 12 deletions(-)

diff --git a/drivers/net/hns3/hns3_ptp.c b/drivers/net/hns3/hns3_ptp.c
index 0b0061bba5..6bbd85ba23 100644
--- a/drivers/net/hns3/hns3_ptp.c
+++ b/drivers/net/hns3/hns3_ptp.c
@@ -125,7 +125,6 @@ hns3_timesync_enable(struct rte_eth_dev *dev)
 
 	if (pf->ptp_enable)
 		return 0;
-	hns3_warn(hw, "note: please ensure Rx/Tx burst mode is simple or common when enabling PTP!");
 
 	rte_spinlock_lock(&hw->lock);
 	ret = hns3_timesync_configure(hns, true);
diff --git a/drivers/net/hns3/hns3_rxtx_vec.c b/drivers/net/hns3/hns3_rxtx_vec.c
index 73f0ab6bc8..153866cf03 100644
--- a/drivers/net/hns3/hns3_rxtx_vec.c
+++ b/drivers/net/hns3/hns3_rxtx_vec.c
@@ -17,15 +17,18 @@ int
 hns3_tx_check_vec_support(struct rte_eth_dev *dev)
 {
 	struct rte_eth_txmode *txmode = &dev->data->dev_conf.txmode;
-	struct hns3_adapter *hns = dev->data->dev_private;
-	struct hns3_pf *pf = &hns->pf;
+	struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
 
 	/* Only support RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE */
 	if (txmode->offloads != RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE)
 		return -ENOTSUP;
 
-	/* Vec is not supported when PTP enabled */
-	if (pf->ptp_enable)
+	/*
+	 * PTP function requires the cooperation of Rx and Tx.
+	 * Tx vector isn't supported if RTE_ETH_RX_OFFLOAD_TIMESTAMP is set
+	 * in Rx offloads.
+	 */
+	if (rxmode->offloads & RTE_ETH_RX_OFFLOAD_TIMESTAMP)
 		return -ENOTSUP;
 
 	return 0;
@@ -233,9 +236,8 @@ hns3_rx_check_vec_support(struct rte_eth_dev *dev)
 	struct rte_eth_fdir_conf *fconf = &dev->data->dev_conf.fdir_conf;
 	struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
 	uint64_t offloads_mask = RTE_ETH_RX_OFFLOAD_TCP_LRO |
-				 RTE_ETH_RX_OFFLOAD_VLAN;
-	struct hns3_adapter *hns = dev->data->dev_private;
-	struct hns3_pf *pf = &hns->pf;
+				 RTE_ETH_RX_OFFLOAD_VLAN |
+				 RTE_ETH_RX_OFFLOAD_TIMESTAMP;
 
 	if (dev->data->scattered_rx)
 		return -ENOTSUP;
@@ -249,9 +251,5 @@ hns3_rx_check_vec_support(struct rte_eth_dev *dev)
 	if (hns3_rxq_iterate(dev, hns3_rxq_vec_check, NULL) != 0)
 		return -ENOTSUP;
 
-	/* Vec is not supported when PTP enabled */
-	if (pf->ptp_enable)
-		return -ENOTSUP;
-
 	return 0;
 }
-- 
2.22.0