tcp_info has 2 new fields : bytes_acked & bytes_received

$ ss -ti src :22
...
	 cubic wscale:7,6 rto:234 rtt:33.199/17.225 ato:17.225 mss:1418 cwnd:9
ssthresh:9 send 3.1Mbps lastsnd:3 lastrcv:4 lastack:193
bytes_acked:188396 bytes_received:13639 pacing_rate 6.2Mbps unacked:1
retrans:0/4 reordering:4 rcv_rtt:47.25 rcv_space:28960
Signed-off-by: Eric Dumazet <edumazet@google.com>