From 1ebe99867588cb6f013b59936f2e116a68833900 Mon Sep 17 00:00:00 2001
From: Jeffrey Hsu <hsu@FreeBSD.org>
Date: Sat, 19 Jul 2003 00:21:13 +0000
Subject: [PATCH] Add mutex for routing entries.

Reviewed by:	bmilekic, silby
---
 sys/net/route.h | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/sys/net/route.h b/sys/net/route.h
index c7e75291c9d..79b796b913c 100644
--- a/sys/net/route.h
+++ b/sys/net/route.h
@@ -113,7 +113,7 @@ struct rtentry {
 		    struct rtentry *);
 					/* output routine for this (rt,if) */
 	struct	rtentry *rt_parent; 	/* cloning parent of this route */
-	void	*rt_filler2;		/* more filler */
+	struct	mtx *rt_mtx;		/* mutex for routing entry */
 };
 
 /*
@@ -262,6 +262,13 @@ struct route_cb {
 };
 
 #ifdef _KERNEL
+
+#define	RT_LOCK_INIT(rt) \
+    mtx_init((rt)->rt_mtx, "rtentry", NULL, MTX_DEF | MTX_DUPOK)
+#define	RT_LOCK(rt)		mtx_lock((rt)->rt_mtx)
+#define	RT_UNLOCK(rt)		mtx_unlock((rt)->rt_mtx)
+#define	RT_LOCK_DESTROY(rt)	mtx_destroy((rt)->rt_mtx)
+
 #define	RTFREE(rt) \
 	do { \
 		if ((rt)->rt_refcnt <= 1) \