netdev - Re: [PATCH iproute2-next] ss: mptcp: print out last time counters

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Message-ID: <35c0e6dd-ad60-44e6-9f25-00362a5095c7@kernel.org>
Date: Tue, 16 Apr 2024 09:36:41 +0200
From: Matthieu Baerts <matttbe@...nel.org>
To: David Ahern <dsahern@...il.com>
Cc: netdev@...r.kernel.org, mptcp@...ts.linux.dev,
 Stephen Hemminger <stephen@...workplumber.org>,
 Mat Martineau <martineau@...nel.org>, Geliang Tang <geliang@...nel.org>
Subject: Re: [PATCH iproute2-next] ss: mptcp: print out last time counters

Hi David,

On 13/04/2024 18:45, David Ahern wrote:
> On 4/12/24 2:19 AM, Matthieu Baerts (NGI0) wrote:
>> From: Geliang Tang <geliang@...nel.org>
>>
>> Three new "last time" counters have been added to "struct mptcp_info":
>> last_data_sent, last_data_recv and last_ack_recv. They have been added
>> in commit 18d82cde7432 ("mptcp: add last time fields in mptcp_info") in
>> net-next recently.
>>
>> This patch prints out these new counters into mptcp_stats output in ss.
>>
>> Signed-off-by: Geliang Tang <geliang@...nel.org>
>> Acked-by: Matthieu Baerts (NGI0) <matttbe@...nel.org>
>> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@...nel.org>
>> ---
>>  include/uapi/linux/mptcp.h | 4 ++++
>>  misc/ss.c                  | 6 ++++++
>>  2 files changed, 10 insertions(+)
>>
>> diff --git a/include/uapi/linux/mptcp.h b/include/uapi/linux/mptcp.h
>> index c2e6f3be..a0da2632 100644
>> --- a/include/uapi/linux/mptcp.h
>> +++ b/include/uapi/linux/mptcp.h
> 
> uapi headers are synced using scripts, meaning at best uapi updates
> should be a separate patch (the updates can also be omitted).

Sorry for that, I didn't know. Thank you for the explanation, noted!

>> @@ -56,6 +56,10 @@ struct mptcp_info {
>>  	__u64	mptcpi_bytes_received;
>>  	__u64	mptcpi_bytes_acked;
>>  	__u8	mptcpi_subflows_total;
>> +	__u8	reserved[3];
>> +	__u32	mptcpi_last_data_sent;
>> +	__u32	mptcpi_last_data_recv;
>> +	__u32	mptcpi_last_ack_recv;
>>  };
>>  
>>  /* MPTCP Reset reason codes, rfc8684 */
>> diff --git a/misc/ss.c b/misc/ss.c
>> index 87008d7c..81b813c1 100644
>> --- a/misc/ss.c
>> +++ b/misc/ss.c
>> @@ -3279,6 +3279,12 @@ static void mptcp_stats_print(struct mptcp_info *s)
>>  		out(" bytes_acked:%llu", s->mptcpi_bytes_acked);
>>  	if (s->mptcpi_subflows_total)
>>  		out(" subflows_total:%u", s->mptcpi_subflows_total);
>> +	if (s->mptcpi_last_data_sent)
>> +		out(" last_data_sent:%u", s->mptcpi_last_data_sent);
>> +	if (s->mptcpi_last_data_recv)
>> +		out(" last_data_recv:%u", s->mptcpi_last_data_recv);
>> +	if (s->mptcpi_last_ack_recv)
>> +		out(" last_ack_recv:%u", s->mptcpi_last_ack_recv);
>>  }
>>  
> 
> applied to iproute2-next
Thank you!

Cheers,
Matt
-- 
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