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path: root/main/linux-grsec/linux-3.0.x-regression-with-ipv4-routes-having-mtu.patch
blob: 7ca414782695ac3623dc7987f8b9f04c0dd6c724 (plain)
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diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index f30112f..26a6249 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1841,6 +1841,22 @@ static unsigned int ipv4_mtu(const struct dst_entry *dst)
 	return mtu;
 }
 
+static void __rt_init_metrics(struct rtable *rt, struct fib_info *fi,
+			      struct inet_peer *peer)
+{
+	if (peer && fi->fib_metrics == (u32 *) dst_default_metrics) {
+		dst_init_metrics(&rt->dst, peer->metrics, false);
+		return;
+	}
+
+	if (fi->fib_metrics != (u32 *) dst_default_metrics) {
+		rt->fi = fi;
+		atomic_inc(&fi->fib_clntref);
+	}
+
+	dst_init_metrics(&rt->dst, fi->fib_metrics, true);
+}
+
 static void rt_init_metrics(struct rtable *rt, const struct flowi4 *fl4,
 			    struct fib_info *fi)
 {
@@ -1859,7 +1875,8 @@ static void rt_init_metrics(struct rtable *rt, const struct flowi4 *fl4,
 		if (inet_metrics_new(peer))
 			memcpy(peer->metrics, fi->fib_metrics,
 			       sizeof(u32) * RTAX_MAX);
-		dst_init_metrics(&rt->dst, peer->metrics, false);
+
+		__rt_init_metrics(rt, fi, peer);
 
 		check_peer_pmtu(&rt->dst, peer);
 		if (peer->redirect_genid != redirect_genid)
@@ -1869,13 +1886,8 @@ static void rt_init_metrics(struct rtable *rt, const struct flowi4 *fl4,
 			rt->rt_gateway = peer->redirect_learned.a4;
 			rt->rt_flags |= RTCF_REDIRECTED;
 		}
-	} else {
-		if (fi->fib_metrics != (u32 *) dst_default_metrics) {
-			rt->fi = fi;
-			atomic_inc(&fi->fib_clntref);
-		}
-		dst_init_metrics(&rt->dst, fi->fib_metrics, true);
-	}
+	} else
+		__rt_init_metrics(rt, fi, NULL);
 }
 
 static void rt_set_nexthop(struct rtable *rt, const struct flowi4 *fl4,