From fc518953bc9c8d7d33c6ab261995f5038f3c87f9 Mon Sep 17 00:00:00 2001 From: Florian Westphal Date: Fri, 27 Mar 2020 14:48:50 -0700 Subject: mptcp: add and use MIB counter infrastructure Exported via same /proc file as the Linux TCP MIB counters, so "netstat -s" or "nstat" will show them automatically. The MPTCP MIB counters are allocated in a distinct pcpu area in order to avoid bloating/wasting TCP pcpu memory. Counters are allocated once the first MPTCP socket is created in a network namespace and free'd on exit. If no sockets have been allocated, all-zero mptcp counters are shown. The MIB counter list is taken from the multipath-tcp.org kernel, but only a few counters have been picked up so far. The counter list can be increased at any time later on. v2 -> v3: - remove 'inline' in foo.c files (David S. Miller) Co-developed-by: Paolo Abeni Signed-off-by: Paolo Abeni Signed-off-by: Florian Westphal Signed-off-by: Mat Martineau Signed-off-by: David S. Miller --- net/ipv4/proc.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'net/ipv4/proc.c') diff --git a/net/ipv4/proc.c b/net/ipv4/proc.c index 2580303249e2..75545a829a2b 100644 --- a/net/ipv4/proc.c +++ b/net/ipv4/proc.c @@ -32,6 +32,7 @@ #include #include #include +#include #include #include #include @@ -485,6 +486,7 @@ static int netstat_seq_show(struct seq_file *seq, void *v) offsetof(struct ipstats_mib, syncp))); seq_putc(seq, '\n'); + mptcp_seq_show(seq); return 0; } -- cgit v1.2.3