From 6e4ace5791be573863485688e0ab6b6297d1fb59 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Thu, 13 Feb 2014 14:27:40 -0800 Subject: [PATCH] tcp: add pacing_rate information into tcp_info Add two new fields to struct tcp_info, to report sk_pacing_rate and sk_max_pacing_rate to monitoring applications, as ss from iproute2. User exported fields are 64bit, even if kernel is currently using 32bit fields. lpaa5:~# ss -i .. skmem:(r0,rb357120,t0,tb2097152,f1584,w1980880,o0,bl0) ts sack cubic wscale:6,6 rto:400 rtt:0.875/0.75 mss:1448 cwnd:1 ssthresh:12 send 13.2Mbps pacing_rate 3336.2Mbps unacked:15 retrans:1/5448 lost:15 rcv_space:29200 Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller Change-Id: I31149707ef565448d5f2f1b43f5759f308f824f5 --- include/linux/tcp.h | 3 +++ net/ipv4/tcp.c | 5 +++++ 2 files changed, 8 insertions(+) diff --git a/include/linux/tcp.h b/include/linux/tcp.h index 699bdcc82f0..9fd21c10532 100644 --- a/include/linux/tcp.h +++ b/include/linux/tcp.h @@ -168,6 +168,9 @@ struct tcp_info { __u32 tcpi_rcv_space; __u32 tcpi_total_retrans; + + __u64 tcpi_pacing_rate; + __u64 tcpi_max_pacing_rate; }; /* for TCP_MD5SIG socket option */ diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index aa1763bdfcc..16a0e210eba 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -2567,6 +2567,11 @@ void tcp_get_info(const struct sock *sk, struct tcp_info *info) info->tcpi_total_retrans = tp->total_retrans; + info->tcpi_pacing_rate = sk->sk_pacing_rate != ~0U ? + sk->sk_pacing_rate : ~0ULL; + info->tcpi_max_pacing_rate = sk->sk_max_pacing_rate != ~0U ? + sk->sk_max_pacing_rate : ~0ULL; + if (sk->sk_socket) { struct file *filep = sk->sk_socket->file; if (filep)