[PATCH v3 1/2] examples/ptpclient: add the check for PTP capability

[Huisong Li <lihuisong@huawei.com>]

If a port doesn't support PTP, there is no need to keep running
app. So this patch adds the check for PTP capability.

Fixes: 7a04a4f67dca ("examples/ptpclient: enable Rx timestamp offload")
Cc: stable@dpdk.org

Signed-off-by: Huisong Li <lihuisong@huawei.com>
Signed-off-by: Dongdong Liu <liudongdong3@huawei.com>
---
 examples/ptpclient/ptpclient.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/examples/ptpclient/ptpclient.c b/examples/ptpclient/ptpclient.c
index cdf2da64df..181d8fb357 100644
--- a/examples/ptpclient/ptpclient.c
+++ b/examples/ptpclient/ptpclient.c
@@ -196,6 +196,11 @@ port_init(uint16_t port, struct rte_mempool *mbuf_pool)
 
 	if (dev_info.rx_offload_capa & RTE_ETH_RX_OFFLOAD_TIMESTAMP)
 		port_conf.rxmode.offloads |= RTE_ETH_RX_OFFLOAD_TIMESTAMP;
+	else {
+		printf("port(%u) doesn't support PTP: %s\n", port,
+		       strerror(-retval));
+		return -ENOTSUP;
+	}
 
 	if (dev_info.tx_offload_capa & RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE)
 		port_conf.txmode.offloads |=
-- 
2.33.0