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| author |  Eric Dumazet <eric.dumazet@gmail.com>
| 2011-10-03 14:01:21 -0400 |
|---|---|---|
| committer |  David S. Miller <davem@davemloft.net>
| 2011-10-03 14:01:21 -0400 |
| commit | b5c5693bb723a019deac3cd1345f3e7233c8a67e (patch) | |
| tree | e5136c3e7a6efee0453f2012882e0d95eed7672d /net/ipv4 | |
| parent | net: sh_eth: fix build failure (diff) | |
| download | linux-b5c5693bb723a019deac3cd1345f3e7233c8a67e.tar.gz linux-b5c5693bb723a019deac3cd1345f3e7233c8a67e.tar.bz2 linux-b5c5693bb723a019deac3cd1345f3e7233c8a67e.zip | |
tcp: report ECN_SEEN in tcp_info
Allows ss command (iproute2) to display "ecnseen" if at least one packet
with ECT(0) or ECT(1) or ECN was received by this socket.
"ecn" means ECN was negotiated at session establishment (TCP level)
"ecnseen" means we received at least one packet with ECT fields set (IP
level)
ss -i
...
ESTAB 0 0 192.168.20.110:22 192.168.20.144:38016
ino:5950 sk:f178e400
mem:(r0,w0,f0,t0) ts sack ecn ecnseen bic wscale:7,8 rto:210
rtt:12.5/7.5 cwnd:10 send 9.3Mbps rcv_space:14480
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/tcp.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index 131c45f93373..4c0da24fb649 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -2455,8 +2455,10 @@ void tcp_get_info(struct sock *sk, struct tcp_info *info) info->tcpi_rcv_wscale = tp->rx_opt.rcv_wscale; } - if (tp->ecn_flags&TCP_ECN_OK) + if (tp->ecn_flags & TCP_ECN_OK) info->tcpi_options |= TCPI_OPT_ECN; + if (tp->ecn_flags & TCP_ECN_SEEN) + info->tcpi_options |= TCPI_OPT_ECN_SEEN; info->tcpi_rto = jiffies_to_usecs(icsk->icsk_rto); info->tcpi_ato = jiffies_to_usecs(icsk->icsk_ack.ato); |