This patch added two more mibs for MP_RST, MPTCP_MIB_MPRSTTX for
the MP_RST sending and MPTCP_MIB_MPRSTRX for the MP_RST receiving.

Signed-off-by: Geliang Tang <geliang.tang@suse.com>
---
 net/mptcp/mib.c     | 2 ++
 net/mptcp/mib.h     | 2 ++
 net/mptcp/options.c | 2 ++
 3 files changed, 6 insertions(+)

diff --git a/net/mptcp/mib.c b/net/mptcp/mib.c
index 684643f8af53..d93a8c9996fd 100644
--- a/net/mptcp/mib.c
+++ b/net/mptcp/mib.c
@@ -51,6 +51,8 @@ static const struct snmp_mib mptcp_snmp_list[] = {
 	SNMP_MIB_ITEM("MPFailRx", MPTCP_MIB_MPFAILRX),
 	SNMP_MIB_ITEM("MPFastcloseTx", MPTCP_MIB_MPFASTCLOSETX),
 	SNMP_MIB_ITEM("MPFastcloseRx", MPTCP_MIB_MPFASTCLOSERX),
+	SNMP_MIB_ITEM("MPRstTx", MPTCP_MIB_MPRSTTX),
+	SNMP_MIB_ITEM("MPRstRx", MPTCP_MIB_MPRSTRX),
 	SNMP_MIB_ITEM("RcvPruned", MPTCP_MIB_RCVPRUNED),
 	SNMP_MIB_ITEM("SubflowStale", MPTCP_MIB_SUBFLOWSTALE),
 	SNMP_MIB_ITEM("SubflowRecover", MPTCP_MIB_SUBFLOWRECOVER),
diff --git a/net/mptcp/mib.h b/net/mptcp/mib.h
index 93dd5176fd5e..529d07af9e14 100644
--- a/net/mptcp/mib.h
+++ b/net/mptcp/mib.h
@@ -44,6 +44,8 @@ enum linux_mptcp_mib_field {
 	MPTCP_MIB_MPFAILRX,		/* Received a MP_FAIL */
 	MPTCP_MIB_MPFASTCLOSETX,	/* Transmit a MP_FASTCLOSE */
 	MPTCP_MIB_MPFASTCLOSERX,	/* Received a MP_FASTCLOSE */
+	MPTCP_MIB_MPRSTTX,		/* Transmit a MP_RST */
+	MPTCP_MIB_MPRSTRX,		/* Received a MP_RST */
 	MPTCP_MIB_RCVPRUNED,		/* Incoming packet dropped due to memory limit */
 	MPTCP_MIB_SUBFLOWSTALE,		/* Subflows entered 'stale' status */
 	MPTCP_MIB_SUBFLOWRECOVER,	/* Subflows returned to active status after being stale */
diff --git a/net/mptcp/options.c b/net/mptcp/options.c
index e775d75807fd..88f4ebbd6515 100644
--- a/net/mptcp/options.c
+++ b/net/mptcp/options.c
@@ -839,6 +839,7 @@ bool mptcp_established_options(struct sock *sk, struct sk_buff *skb,
 		if (mptcp_established_options_rst(sk, skb, &opt_size, remaining, opts)) {
 			*size += opt_size;
 			remaining -= opt_size;
+			MPTCP_INC_STATS(sock_net(sk), MPTCP_MIB_MPRSTTX);
 		}
 		return true;
 	}
@@ -1161,6 +1162,7 @@ bool mptcp_incoming_options(struct sock *sk, struct sk_buff *skb)
 			subflow->reset_seen = 1;
 			subflow->reset_reason = mp_opt.reset_reason;
 			subflow->reset_transient = mp_opt.reset_transient;
+			MPTCP_INC_STATS(sock_net(sk), MPTCP_MIB_MPRSTRX);
 		}
 
 		if (!(mp_opt.suboptions & OPTION_MPTCP_DSS))
-- 
2.34.1