netdev - [PATCH net-next v3 11/14] net-timestamp: support OPT

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Message-Id: <20241028110535.82999-12-kerneljasonxing@gmail.com>
Date: Mon, 28 Oct 2024 19:05:32 +0800
From: Jason Xing <kerneljasonxing@...il.com>
To: davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	dsahern@...nel.org,
	willemdebruijn.kernel@...il.com,
	willemb@...gle.com,
	ast@...nel.org,
	daniel@...earbox.net,
	andrii@...nel.org,
	martin.lau@...ux.dev,
	eddyz87@...il.com,
	song@...nel.org,
	yonghong.song@...ux.dev,
	john.fastabend@...il.com,
	kpsingh@...nel.org,
	sdf@...ichev.me,
	haoluo@...gle.com,
	jolsa@...nel.org,
	shuah@...nel.org,
	ykolal@...com
Cc: bpf@...r.kernel.org,
	netdev@...r.kernel.org,
	Jason Xing <kernelxing@...cent.com>
Subject: [PATCH net-next v3 11/14] net-timestamp: support OPT_ID for TCP proto

From: Jason Xing <kernelxing@...cent.com>

Let it work for TCP proto.

Signed-off-by: Jason Xing <kernelxing@...cent.com>
---
 net/ipv4/tcp.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 6b23b4aa3c91..f77dc7a4a98e 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -488,6 +488,8 @@ static void tcp_tx_timestamp_bpf(struct sock *sk, struct sk_buff *skb)
 		sock_tx_timestamp_bpf(tsflags, &shinfo->tx_flags);
 		if (tsflags & SOF_TIMESTAMPING_TX_ACK)
 			tcb->txstamp_ack = 1;
+		if (tsflags & SOF_TIMESTAMPING_TX_RECORD_MASK)
+			shinfo->tskey = TCP_SKB_CB(skb)->seq + skb->len - 1;
 	}
 }
 
-- 
2.37.3