From feb5f2ec646483fb66f9ad7218b1aad2a93a2a5c Mon Sep 17 00:00:00 2001 From: Yuchung Cheng Date: Tue, 17 Apr 2018 23:18:49 -0700 Subject: tcp: export packets delivery info Export data delivered and delivered with CE marks to 1) SNMP TCPDelivered and TCPDeliveredCE 2) getsockopt(TCP_INFO) 3) Timestamping API SOF_TIMESTAMPING_OPT_STATS Note that for SCM_TSTAMP_ACK, the delivery info in SOF_TIMESTAMPING_OPT_STATS is reported before the info was fully updated on the ACK. These stats help application monitor TCP delivery and ECN status on per host, per connection, even per message level. Signed-off-by: Yuchung Cheng Reviewed-by: Neal Cardwell Reviewed-by: Soheil Hassas Yeganeh Reviewed-by: Eric Dumazet Signed-off-by: David S. Miller --- include/uapi/linux/tcp.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/uapi/linux/tcp.h') diff --git a/include/uapi/linux/tcp.h b/include/uapi/linux/tcp.h index 560374c978f9..379b08700a54 100644 --- a/include/uapi/linux/tcp.h +++ b/include/uapi/linux/tcp.h @@ -224,6 +224,9 @@ struct tcp_info { __u64 tcpi_busy_time; /* Time (usec) busy sending data */ __u64 tcpi_rwnd_limited; /* Time (usec) limited by receive window */ __u64 tcpi_sndbuf_limited; /* Time (usec) limited by send buffer */ + + __u32 tcpi_delivered; + __u32 tcpi_delivered_ce; }; /* netlink attributes types for SCM_TIMESTAMPING_OPT_STATS */ @@ -244,6 +247,8 @@ enum { TCP_NLA_SNDQ_SIZE, /* Data (bytes) pending in send queue */ TCP_NLA_CA_STATE, /* ca_state of socket */ TCP_NLA_SND_SSTHRESH, /* Slow start size threshold */ + TCP_NLA_DELIVERED, /* Data pkts delivered incl. out-of-order */ + TCP_NLA_DELIVERED_CE, /* Like above but only ones w/ CE marks */ }; -- cgit