Add sack_delivered to tcp_sacktag_state and count the number of sacked
and dsacked packets. This is pure refactor for future patches to improve
tracking delivered counts.
Signed-off-by: NYousuk Seung <ysseung@google.com>
Signed-off-by: NYuchung Cheng <ycheng@google.com>
Acked-by: NEric Dumazet <edumazet@google.com>
Acked-by: NNeal Cardwell <ncardwell@google.com>
Acked-by: NSoheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>