1 files changed, 14 insertions, 0 deletions

diff --git a/sys/netinet/udp_usrreq.c b/sys/netinet/udp_usrreq.c
index 520fc949ed38..019ceb3ef281 100644
--- a/sys/netinet/udp_usrreq.c
+++ b/sys/netinet/udp_usrreq.c
@@ -203,6 +203,20 @@ udp_init(void)
 	    EVENTHANDLER_PRI_ANY);
 }
 
+/*
+ * Kernel module interface for updating udpstat.  The argument is an index
+ * into udpstat treated as an array of u_long.  While this encodes the
+ * general layout of udpstat into the caller, it doesn't encode its location,
+ * so that future changes to add, for example, per-CPU stats support won't
+ * cause binary compatibility problems for kernel modules.
+ */
+void
+kmod_udpstat_inc(int statnum)
+{
+
+	(*((u_long *)&V_udpstat + statnum))++;
+}
+
 int
 udp_newudpcb(struct inpcb *inp)
 {