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authorEric Dumazet <edumazet@google.com>2014-02-13 14:27:40 -0800
committerDavid S. Miller <davem@davemloft.net>2014-02-14 16:09:43 -0500
commit977cb0ecf82eb6d15562573c31edebf90db35163 (patch)
tree584f1ea124a3788792420d2010693ea7955a7a72 /net/ipv4/tcp.c
parent1c213bd24ad04f4430031d20d740d7783162b099 (diff)
downloadlinux-977cb0ecf82eb6d15562573c31edebf90db35163.tar.bz2
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 <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp.c')
-rw-r--r--net/ipv4/tcp.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 9f3a2db9109e..bed379c7abcd 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2794,6 +2794,11 @@ void tcp_get_info(const struct sock *sk, struct tcp_info *info)
info->tcpi_rcv_space = tp->rcvq_space.space;
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;
}
EXPORT_SYMBOL_GPL(tcp_get_info);