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Diffstat (limited to 'net/ipv4/ip_gre.c')
-rw-r--r--net/ipv4/ip_gre.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index 6613edfac28c..f9af98dd7561 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -778,7 +778,8 @@ static netdev_tx_t ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev
.proto = IPPROTO_GRE,
.fl_gre_key = tunnel->parms.o_key
};
- if (ip_route_output_key(dev_net(dev), &rt, &fl)) {
+ rt = ip_route_output_key(dev_net(dev), &fl);
+ if (IS_ERR(rt)) {
dev->stats.tx_carrier_errors++;
goto tx_error;
}
@@ -953,9 +954,9 @@ static int ipgre_tunnel_bind_dev(struct net_device *dev)
.proto = IPPROTO_GRE,
.fl_gre_key = tunnel->parms.o_key
};
- struct rtable *rt;
+ struct rtable *rt = ip_route_output_key(dev_net(dev), &fl);
- if (!ip_route_output_key(dev_net(dev), &rt, &fl)) {
+ if (!IS_ERR(rt)) {
tdev = rt->dst.dev;
ip_rt_put(rt);
}
@@ -1215,9 +1216,9 @@ static int ipgre_open(struct net_device *dev)
.proto = IPPROTO_GRE,
.fl_gre_key = t->parms.o_key
};
- struct rtable *rt;
+ struct rtable *rt = ip_route_output_key(dev_net(dev), &fl);
- if (ip_route_output_key(dev_net(dev), &rt, &fl))
+ if (IS_ERR(rt))
return -EADDRNOTAVAIL;
dev = rt->dst.dev;
ip_rt_put(rt);