From 38acb6260f60a7698c3a24db4df6ec1cf8f14c60 Mon Sep 17 00:00:00 2001 From: Paolo Abeni Date: Wed, 4 May 2022 14:54:08 -0700 Subject: mptcp: add more offered MIBs counter Track the exceptional handling of MPTCP-level offered window with a few more counters for observability. Signed-off-by: Paolo Abeni Signed-off-by: Mat Martineau Signed-off-by: Jakub Kicinski --- net/mptcp/options.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'net/mptcp/options.c') diff --git a/net/mptcp/options.c b/net/mptcp/options.c index 3e3156cfe813..ac3b7b8a02f6 100644 --- a/net/mptcp/options.c +++ b/net/mptcp/options.c @@ -1248,8 +1248,11 @@ static void mptcp_set_rwin(struct tcp_sock *tp, struct tcphdr *th) if (rcv_wnd == rcv_wnd_old) break; - if (before64(rcv_wnd_new, rcv_wnd)) + if (before64(rcv_wnd_new, rcv_wnd)) { + MPTCP_INC_STATS(sock_net(ssk), MPTCP_MIB_RCVWNDCONFLICTUPDATE); goto raise_win; + } + MPTCP_INC_STATS(sock_net(ssk), MPTCP_MIB_RCVWNDCONFLICT); rcv_wnd_old = rcv_wnd; } return; @@ -1275,6 +1278,7 @@ raise_win: /* RFC1323 scaling applied */ new_win >>= tp->rx_opt.rcv_wscale; th->window = htons(new_win); + MPTCP_INC_STATS(sock_net(ssk), MPTCP_MIB_RCVWNDSHARED); } } -- cgit