Hi Hemant and Ferruh,

在 2023/9/21 19:22, Hemant Agrawal 写道:
On 9/21/2023 10:18 AM, lihuisong (C) wrote:
在 2023/9/16 1:29, Ferruh Yigit 写道:
On 8/17/2023 9:42 AM, Huisong Li wrote:
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: sta...@dpdk.org

Signed-off-by: Huisong Li <lihuis...@huawei.com>
Signed-off-by: Dongdong Liu <liudongdo...@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;
+    }

I am not sure why TIMESTAMP offload is required for PTP, I think
there is a confusion.
If TIMESTAMP offload is not required for PTP, there isn't PTP offload
in ethdev lib.

What do you mean with "PTP offload"?

If you check the ptpclient sample app, it parses ptp packets in the application.


Gagandeep, Hemant,
Can you please clarify why TIMESTAMP offload is enabled?
looking forward to your reply.
[Hemant] as explained in other mail, it is a requirement for dpaa2. So, we are 
just passing the offload argument.

Well, currently there is no such offload to know HW PTP support in DPDK. It can 
be introduced.
I agree with you, Heman.

And I agree the above else should not be there atleast w.r.t TIMESTAMP OFFLOAD.

Ack.

@Ferruh, I wonder what you think. Looking forward to your reply.


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