tcp: stamp SCM_TSTAMP_ACK later in tcp_clean_rtx_queue()
authorYousuk Seung <ysseung@google.com>
Sat, 27 Jun 2020 04:05:32 +0000 (21:05 -0700)
committerDavid S. Miller <davem@davemloft.net>
Sun, 28 Jun 2020 00:41:27 +0000 (17:41 -0700)
commitfdb7eb21ddd3cc07b8120b6f5cc0b279a0ed198e
treec06e2f363f21c700db7d5c33f5580be95af44c46
parentb08866f42a8752ea2b699dd29d653d86b06bc3b2
tcp: stamp SCM_TSTAMP_ACK later in tcp_clean_rtx_queue()

Currently tp->delivered is updated with sacked packets but not
cumulatively acked when SCP_TSTAMP_ACK is timestamped. This patch moves
a tcp_ack_tstamp() call in tcp_clean_rtx_queue() to later in the loop so
that when a skb is fully acked OPT_STATS of SCM_TSTAMP_ACK will include
the current skb in the delivered count. When not fully acked
tcp_ack_tstamp() is a no-op and there is no change in behavior.

Signed-off-by: Yousuk Seung <ysseung@google.com>
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ipv4/tcp_input.c