mptcp: add RM_ADDR related mibs

This patch added two new mibs for RM_ADDR, named MPTCP_MIB_RMADDR and MPTCP_MIB_RMSUBFLOW, when the RM_ADDR suboption is received, increase the first mib counter, when the local subflow is removed, increase the second mib counter. Suggested-by: Matthieu Baerts <[email protected]> Suggested-by: Paolo Abeni <[email protected]> Suggested-by: Mat Martineau <[email protected]> Acked-by: Paolo Abeni <[email protected]> Signed-off-by: Geliang Tang <[email protected]> Reviewed-by: Mat Martineau <[email protected]> Signed-off-by: David S. Miller <[email protected]>
ambv · Sep 25, 2020 · 7a7e52e · 7a7e52e
1 parent 0ee4261
commit 7a7e52e
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diff --git a/net/mptcp/mib.c b/net/mptcp/mib.c
@@ -29,6 +29,8 @@ static const struct snmp_mib mptcp_snmp_list[] = {
 	SNMP_MIB_ITEM("DuplicateData", MPTCP_MIB_DUPDATA),
 	SNMP_MIB_ITEM("AddAddr", MPTCP_MIB_ADDADDR),
 	SNMP_MIB_ITEM("EchoAdd", MPTCP_MIB_ECHOADD),
+	SNMP_MIB_ITEM("RmAddr", MPTCP_MIB_RMADDR),
+	SNMP_MIB_ITEM("RmSubflow", MPTCP_MIB_RMSUBFLOW),
 	SNMP_MIB_SENTINEL
 };
 

diff --git a/net/mptcp/mib.h b/net/mptcp/mib.h
@@ -22,6 +22,8 @@ enum linux_mptcp_mib_field {
 	MPTCP_MIB_DUPDATA,		/* Segments discarded due to duplicate DSS */
 	MPTCP_MIB_ADDADDR,		/* Received ADD_ADDR with echo-flag=0 */
 	MPTCP_MIB_ECHOADD,		/* Received ADD_ADDR with echo-flag=1 */
+	MPTCP_MIB_RMADDR,		/* Received RM_ADDR */
+	MPTCP_MIB_RMSUBFLOW,		/* Remove a subflow */
 	__MPTCP_MIB_MAX
 };
 

diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c
@@ -15,6 +15,7 @@
 #include <uapi/linux/mptcp.h>
 
 #include "protocol.h"
+#include "mib.h"
 
 /* forward declaration */
 static struct genl_family mptcp_genl_family;
@@ -346,6 +347,8 @@ void mptcp_pm_nl_rm_addr_received(struct mptcp_sock *msk)
 		msk->pm.subflows--;
 		WRITE_ONCE(msk->pm.accept_addr, true);
 
+		__MPTCP_INC_STATS(sock_net(sk), MPTCP_MIB_RMADDR);
+
 		break;
 	}
 }
@@ -379,6 +382,8 @@ void mptcp_pm_nl_rm_subflow_received(struct mptcp_sock *msk, u8 rm_id)
 		msk->pm.local_addr_used--;
 		msk->pm.subflows--;
 
+		__MPTCP_INC_STATS(sock_net(sk), MPTCP_MIB_RMSUBFLOW);
+
 		break;
 	}
 }